@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700;900&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Plus+Jakarta+Sans:wght@200;300;400;500;600;700;800&display=swap');

/* ==========================================================================
   DEEP 'BLUE — Elite Freediving Academy & Expeditions
   Design Concept by Alina Alekseyeva
   Aesthetics: Deep Abyss, Oceanic Glassmorphism, Cinematic Serenity
   ========================================================================== */

:root {
    --bg-darkest: #01060d;
    --bg-deep: #020c18;
    --bg-surface: #06172a;
    --bg-card: rgba(6, 23, 42, 0.65);
    --bg-card-hover: rgba(10, 32, 58, 0.85);
    
    --primary-cyan: #38bdf8;
    --primary-glow: rgba(56, 189, 248, 0.35);
    --accent-blue: #0ea5e9;
    --deep-blue: #0369a1;
    --light-aqua: #a5f3fc;
    
    --sand-accent: #e2d5c3;
    --sand-light: #f7f3ee;
    
    --text-pure: #ffffff;
    --text-primary: #f1f5f9;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    
    --border-glass: rgba(255, 255, 255, 0.09);
    --border-glass-glow: rgba(56, 189, 248, 0.25);
    
    --font-serif: 'Cormorant Garamond', Georgia, serif;
    --font-display: 'Cinzel', serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset & Temel Ayarlar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-darkest);
    color: var(--text-primary);
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    letter-spacing: 0.02em;
    min-height: 100vh;
    background: radial-gradient(circle at 50% 20%, #031427 0%, #01060d 75%);
    position: relative;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Su Altı Ambiyans Parçacıkları ve Işık Efektleri */
.underwater-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: radial-gradient(circle, rgba(165, 243, 252, 0.7) 0%, rgba(56, 189, 248, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: floatUpward linear infinite;
    will-change: transform, opacity;
    transform: translateZ(0);
}

@keyframes floatUpward {
    0% {
        transform: translateY(105vh) translateX(0) translateZ(0);
        opacity: 0;
    }
    20% {
        opacity: 0.6;
    }
    80% {
        opacity: 0.4;
    }
    100% {
        transform: translateY(-10vh) translateX(30px) translateZ(0);
        opacity: 0;
    }
}

.water-caustics {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at 50% 0%, rgba(56, 189, 248, 0.07) 0%, transparent 60%);
    pointer-events: none;
    z-index: 1;
    animation: causticPulse 8s ease-in-out infinite alternate;
    will-change: opacity, transform;
    transform: translateZ(0);
}

@keyframes causticPulse {
    0% { opacity: 0.5; transform: scale(1) translateZ(0); }
    100% { opacity: 0.85; transform: scale(1.04) translateZ(0); }
}

/* Container */
.container {
    width: 88%;
    max-width: 1180px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* HEADER & NAVBAR */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100000;
    padding: 1.6rem 0;
    transition: var(--transition-smooth);
}

.site-header.menu-active {
    background: rgba(2, 11, 22, 0.96) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5) !important;
}

/* Ana sayfa (index.html) üst menü görünümü */
body.home-page .site-header {
    background: transparent;
}

body.home-page .site-header.scrolled {
    padding: 1rem 0;
    background: rgba(2, 11, 22, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Index hariç TÜM alt sayfalarda üst menü daima sabit koyu cam zemin ve sınırla görüntülenir */
body:not(.home-page) .site-header {
    padding: 1rem 0;
    background: rgba(2, 11, 22, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.header-container {
    width: 90%;
    max-width: 1360px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: var(--transition-smooth);
}

.site-logo:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.header-logo-img {
    height: 38px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
    display: block;
}

.logo-title {
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--text-pure);
    letter-spacing: 0.18em;
}

.logo-accent {
    font-size: 1.15rem;
    font-weight: 300;
    color: var(--sand-accent);
    letter-spacing: 0.22em;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 1.7rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 400;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    transition: var(--transition-smooth);
    position: relative;
    padding-bottom: 4px;
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: var(--primary-cyan);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-pure);
}

.nav-link.active,
.dropdown-toggle.active {
    color: var(--primary-cyan) !important;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active::after,
.dropdown-toggle.active::after {
    width: 0% !important; /* Resimdeki gibi çizgisiz, sadece cyan renkle net ve berrak */
}

/* Branşlar Açılır Dropdown Menü */
.nav-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.dropdown-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-family: inherit;
}

.dropdown-chevron {
    font-size: 0.75rem;
    transition: transform 0.3s ease;
    color: var(--primary-cyan);
}

.nav-dropdown:hover .dropdown-chevron,
.nav-dropdown.is-open .dropdown-chevron {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 260px;
    background: rgba(3, 14, 27, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(56, 189, 248, 0.22);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.7), 0 0 25px rgba(56, 189, 248, 0.15);
    padding: 0.6rem;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -14px;
    left: 0;
    width: 100%;
    height: 14px;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu.dropdown-menu-right {
    left: auto;
    right: 0;
    transform: translateY(10px);
}

.nav-dropdown:hover .dropdown-menu.dropdown-menu-right,
.nav-dropdown.is-open .dropdown-menu.dropdown-menu-right {
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition-smooth);
    background: transparent;
    border-left: 2px solid transparent;
}

.dropdown-item:hover {
    background: rgba(56, 189, 248, 0.12);
    border-left-color: var(--primary-cyan);
    transform: translateX(4px);
}

.dropdown-item.active {
    background: rgba(56, 189, 248, 0.14);
    border-left-color: var(--primary-cyan);
}

.dropdown-item.active .dropdown-title {
    color: var(--primary-cyan);
}

.dropdown-icon {
    font-size: 1.35rem;
    line-height: 1;
}

.dropdown-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.dropdown-title {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-pure);
    letter-spacing: 0.04em;
}

.dropdown-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

/* Butonlar */
.btn-primary {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2) 0%, rgba(14, 165, 233, 0.35) 100%);
    border: 1px solid rgba(56, 189, 248, 0.4);
    color: var(--text-pure);
    padding: 0.75rem 1.6rem;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: 4px;
    backdrop-filter: blur(8px);
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.4) 0%, rgba(14, 165, 233, 0.6) 100%);
    border-color: var(--primary-cyan);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.4);
    transform: translateY(-2px);
}

.btn-hero {
    padding: 1rem 2.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-smooth);
    display: inline-block;
}

.btn-hero.primary,
.btn-hero.secondary,
.btn-hero.tertiary {
    background: rgba(56, 189, 248, 0.12);
    color: var(--primary-cyan);
    border: 1px solid rgba(56, 189, 248, 0.4);
    backdrop-filter: blur(10px);
}

.btn-hero.primary:hover,
.btn-hero.secondary:hover,
.btn-hero.tertiary:hover {
    background: rgba(56, 189, 248, 0.25);
    border-color: var(--primary-cyan);
    color: var(--text-pure);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.35);
    transform: translateY(-3px);
}

.btn-ghost {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-muted);
    padding: 0.75rem 1.6rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--text-pure);
    border-color: var(--text-pure);
}

.btn-ghost:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Hamburger Menü Butonu (Görseldeki İnce Çizgili 2'li Stil) */
.menu-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 32px;
    height: 32px;
    padding: 4px 0;
}

.menu-toggle .bar {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
}

.menu-toggle:hover .bar {
    background: var(--primary-cyan);
    box-shadow: 0 0 8px var(--primary-cyan);
}

/* FULLSCREEN NAV OVERLAY */
.fullscreen-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(1, 6, 13, 0.96);
    backdrop-filter: blur(30px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.fullscreen-menu.open {
    opacity: 1;
    pointer-events: all;
}

/* menu-close-btn alt kısımdaki güncel responsive menü kurallarında yönetilmektedir */

.fullscreen-menu-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2.5rem 1.5rem;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.fullscreen-menu-content::-webkit-scrollbar {
    width: 4px;
}
.fullscreen-menu-content::-webkit-scrollbar-thumb {
    background: rgba(56, 189, 248, 0.3);
    border-radius: 4px;
}

.menu-logo-watermark {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-serif);
    font-size: 15vw;
    color: rgba(255, 255, 255, 0.02);
    pointer-events: none;
    white-space: nowrap;
    z-index: -1;
}

.fullscreen-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0;
    margin: 0;
}

.fs-category-title {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: var(--primary-cyan);
    margin-top: 1.5rem;
    margin-bottom: 0.25rem;
    padding-bottom: 0.35rem;
    border-bottom: 1px solid rgba(56, 189, 248, 0.2);
    text-transform: uppercase;
}

.fullscreen-nav-links li a {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-block;
    letter-spacing: 0.05em;
}

.fullscreen-nav-links li a.fs-sub {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    color: var(--text-primary);
    font-weight: 400;
    letter-spacing: 0.03em;
    padding: 0.25rem 0;
}

.fullscreen-nav-links li a .link-bullet {
    color: var(--primary-cyan);
    margin-right: 0.5rem;
    font-size: 0.9rem;
}

.fullscreen-nav-links li a .link-num {
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--primary-cyan);
    margin-right: 0.8rem;
    vertical-align: middle;
}

.fullscreen-nav-links li a:hover {
    color: var(--primary-cyan);
    transform: translateX(6px);
    text-shadow: 0 0 20px rgba(56, 189, 248, 0.5);
}

.fullscreen-menu-footer {
    margin-top: 3rem;
    font-size: 0.85rem;
    color: var(--text-subtle);
    letter-spacing: 0.1em;
}

.fullscreen-menu-footer strong {
    color: var(--sand-accent);
}

/* ==========================================================================
   HERO SECTION (Resimdeki Tasarımın Birebir Uygulaması)
   ========================================================================== */
.hero-section {
    position: relative;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    min-height: 100vh;
    min-height: 100dvh;
    max-height: 100vh;
    max-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: clamp(3.5rem, 8vh, 5.5rem) 1.5rem clamp(3.2rem, 8vh, 5rem) 1.5rem;
    box-sizing: border-box;
}

.hero-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transform: scale(1.02);
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    filter: brightness(0.92) contrast(1.05);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(1, 6, 13, 0.55) 0%,
        rgba(1, 6, 13, 0.1) 40%,
        rgba(1, 6, 13, 0.3) 70%,
        rgba(1, 6, 13, 0.95) 100%
    );
}

.hero-light-rays {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 70%;
    background: radial-gradient(ellipse at 50% 0%, rgba(165, 243, 252, 0.18) 0%, transparent 70%);
    pointer-events: none;
    mix-blend-mode: screen;
}

/* Üst Köşelerdeki Konsept Metinleri */
.hero-meta-top {
    position: absolute;
    top: clamp(4.5rem, 9vh, 6.5rem);
    left: 0;
    width: 100%;
    padding: 0 2.2rem;
    display: flex;
    justify-content: space-between;
    z-index: 10;
    pointer-events: none;
}

.meta-label {
    font-size: 0.8rem;
    font-weight: 300;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    font-family: var(--font-sans);
}

/* Merkezde İkonik DEEP 'BLUE Başlığı */
.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    width: 100%;
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.hero-brand-wrap {
    margin-bottom: clamp(0.75rem, 2.5vh, 1.8rem);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3.2rem, min(9.5vw, 13vh), 8rem);
    font-weight: 300;
    line-height: 0.9;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-pure);
    text-shadow: 0 10px 40px rgba(0, 0, 0, 0.7);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-word-top {
    display: block;
    transform: translateY(0.1em);
}

.hero-word-bottom {
    display: block;
    color: var(--sand-accent);
    font-weight: 300;
    letter-spacing: 0.12em;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(0.78rem, min(1.8vw, 2.2vh), 1.15rem);
    letter-spacing: 0.35em;
    color: #7dd3fc !important;
    font-weight: 600;
    margin-top: clamp(0.45rem, 1.5vh, 1rem);
    text-transform: uppercase;
    opacity: 1 !important;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9), 0 0 24px rgba(56, 189, 248, 0.6);
}

.hero-tagline {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: clamp(0.88rem, min(1.8vw, 2.2vh), 1.2rem);
    color: #ffffff !important;
    font-weight: 400;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.8), 0 4px 24px rgba(0, 0, 0, 0.6);
    margin: clamp(0.45rem, 1.3vh, 0.85rem) auto 0;
    max-width: 820px;
    line-height: 1.55;
    letter-spacing: 0.03em;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(0.6rem, 1.8vh, 1.25rem);
    margin-top: clamp(0.75rem, 2.5vh, 1.6rem);
}

.btn-hero {
    padding: clamp(0.55rem, 1.4vh, 0.85rem) clamp(1.2rem, 2.5vw, 2rem);
    font-size: clamp(0.78rem, 1.6vh, 0.95rem);
}

/* Aşağı Kaydır İndikatörü */
.scroll-down-indicator {
    position: absolute;
    bottom: clamp(0.6rem, 2vh, 1.5rem);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    text-decoration: none;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.scroll-down-indicator:hover {
    color: var(--primary-cyan);
}

.mouse-icon {
    width: 20px;
    height: 32px;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    border-radius: 12px;
    position: relative;
}

.mouse-icon .wheel {
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 6px;
    background: var(--primary-cyan);
    border-radius: 2px;
    animation: scrollWheel 2s infinite ease-in-out;
}

@keyframes scrollWheel {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 14px); opacity: 0; }
}

.scroll-text {
    font-size: 0.65rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

/* Düşük Yükseklikli Masaüstü ve Laptop Ekranlarında (<= 720px) Tam Ekrana Kusursuz Oturma */
@media (max-height: 720px) {
    .hero-section {
        padding-top: 3.5rem !important;
        padding-bottom: 3.2rem !important;
    }
    .hero-brand-wrap {
        margin-bottom: 0.6rem !important;
    }
    .hero-title {
        font-size: clamp(2.8rem, 9vh, 4.8rem) !important;
    }
    .hero-subtitle {
        margin-top: 0.35rem !important;
        font-size: 0.82rem !important;
    }
    .hero-tagline {
        margin-top: 0.35rem !important;
        font-size: 0.88rem !important;
        line-height: 1.4 !important;
    }
    .hero-cta-group {
        margin-top: 0.85rem !important;
        gap: 0.75rem !important;
    }
    .scroll-down-indicator {
        bottom: 0.5rem !important;
    }
}

/* ==========================================================================
   GENEL BÖLÜM STİLLERİ
   ========================================================================== */
.section {
    padding: 9rem 0 7rem;
    position: relative;
    z-index: 2;
}

.philosophy-section {
    padding-top: 11rem;
}

.section-badge {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--primary-cyan);
    margin-bottom: 1rem;
    font-weight: 500;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 300;
    color: var(--text-pure);
    line-height: 1.15;
    letter-spacing: 0.04em;
    margin-bottom: 1.5rem;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 650px;
    line-height: 1.7;
    margin-bottom: 4rem;
}

/* ==========================================================================
   FELSEFE BÖLÜMÜ
   ========================================================================== */
.philosophy-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4.5rem;
    align-items: center;
}

.lead-text {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    line-height: 1.45;
    color: var(--sand-light);
    margin-bottom: 1.8rem;
    font-weight: 300;
}

.body-text {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 3rem;
}

.glass-card-image {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-glass);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

.glass-card-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
    display: block;
    transition: transform 0.8s ease;
}

.glass-card-image:hover img {
    transform: scale(1.04);
}

.image-overlay-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2.2rem;
    background: linear-gradient(to top, rgba(1, 6, 13, 0.95), transparent);
}

.caption-tag {
    font-size: 0.65rem;
    letter-spacing: 0.25em;
    color: var(--primary-cyan);
    text-transform: uppercase;
}

.image-overlay-caption h4 {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--text-pure);
    margin: 0.4rem 0;
}

.image-overlay-caption p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   İLETİŞİM FORMU VE ELEMANLARI
   ========================================================================== */

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

input, select, textarea {
    width: 100%;
    background: rgba(2, 12, 24, 0.7);
    border: 1px solid var(--border-glass);
    color: var(--text-pure);
    padding: 0.9rem 1.2rem;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.2);
    background: rgba(3, 16, 32, 0.9);
}

select option {
    background: #020c18;
    color: var(--text-primary);
}

.form-submit {
    width: 100%;
    padding: 1rem;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.form-status {
    margin-top: 1rem;
    font-size: 0.85rem;
    text-align: center;
    min-height: 20px;
}

.form-status.success {
    color: #4ade80;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--border-glass);
    background: #010408;
    padding: 5rem 0 2.5rem;
    position: relative;
    z-index: 2;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.footer-brand {
    flex: 0 0 260px;
    max-width: 260px;
}

.footer-logo-link {
    display: inline-block;
    margin-bottom: 0.85rem;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-logo-link:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

.footer-logo-img {
    height: 44px;
    width: auto;
    max-width: 170px;
    object-fit: contain;
    display: block;
}

.footer-brand .f-logo-top {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--text-pure);
    letter-spacing: 0.15em;
    line-height: 1;
}

.footer-brand .f-logo-bottom {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 300;
    color: var(--sand-accent);
    letter-spacing: 0.15em;
    line-height: 1;
}

.f-desc {
    color: var(--text-subtle);
    font-size: 0.85rem;
    margin-top: 1rem;
    max-width: 260px;
    line-height: 1.6;
}

.f-website {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--primary-cyan);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-decoration: none;
    margin-top: 0.9rem;
    transition: var(--transition-smooth);
}

.globe-icon {
    width: 17px;
    height: 17px;
    stroke: #ffffff;
    stroke-width: 2;
    flex-shrink: 0;
    transition: var(--transition-smooth);
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.4));
}

.f-website:hover {
    color: var(--text-pure);
    text-shadow: 0 0 12px rgba(56, 189, 248, 0.6);
    transform: translateX(3px);
}

.f-website:hover .globe-icon {
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.9));
    transform: none;
}

.footer-links-group {
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
    flex: 1;
    gap: 3.2rem;
    flex-wrap: nowrap;
}

.footer-quick-links-wrapper {
    display: flex;
    flex-direction: column;
    flex: 0 0 auto;
}

.footer-section-title {
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    line-height: 1.2;
    text-transform: uppercase;
    color: var(--primary-cyan);
    margin-bottom: 1.4rem;
    text-align: center;
    width: 100%;
}

.footer-sub-cols {
    display: flex;
    align-items: flex-start;
    gap: 2.4rem;
    position: relative;
    padding-left: 1.6rem;
}

/* 1. En Sol Dikey Çizgi: Ana Sayfa Hizası */
.footer-sub-cols::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.45) 15%, rgba(0, 240, 255, 0.45) 85%, transparent 100%);
    box-shadow: 0 0 6px rgba(0, 240, 255, 0.25);
}

.footer-links-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* 2. Sosyal Medya İki Yanı Dikey Çizgileri (Orta ve Sağ Çizgi) */
.footer-links-group > .footer-links-col {
    position: relative;
    padding-right: 1.6rem;
    flex: 0 0 auto;
}

/* Orta Çizgi: Hızlı Bağlantılar ile Sosyal Medya Arasındaki Boşluğun Tam Ortası */
.footer-links-group > .footer-links-col::before {
    content: "";
    position: absolute;
    left: -1.6rem;
    top: calc(0.82rem * 1.2 + 1.4rem);
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.45) 15%, rgba(0, 240, 255, 0.45) 85%, transparent 100%);
    box-shadow: 0 0 6px rgba(0, 240, 255, 0.25);
}

/* Sağ Çizgi: Sosyal Medya'nın Sağı */
.footer-links-group > .footer-links-col::after {
    content: "";
    position: absolute;
    right: 0;
    top: calc(0.82rem * 1.2 + 1.4rem);
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.45) 15%, rgba(0, 240, 255, 0.45) 85%, transparent 100%);
    box-shadow: 0 0 6px rgba(0, 240, 255, 0.25);
}

.footer-links-col h4 {
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    line-height: 1.2;
    text-transform: uppercase;
    color: var(--primary-cyan);
    margin-bottom: 1.4rem;
    white-space: nowrap;
    text-align: center;
    width: 100%;
}

.footer-links-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    line-height: 1.4;
    margin-bottom: 0.75rem;
    transition: var(--transition-smooth);
    white-space: nowrap;
    text-align: center;
}

.footer-links-col a:last-child {
    margin-bottom: 0;
}

.footer-links-col a:hover {
    color: var(--text-pure);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-subtle);
}

.design-credit strong {
    color: var(--sand-accent);
}

/* ==========================================================================
   MODAL PENCERESİ
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(1, 6, 13, 0.88);
    backdrop-filter: blur(25px);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    padding: 1.5rem;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal-window {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass-glow);
    border-radius: 8px;
    width: 100%;
    max-width: 540px;
    padding: 3rem;
    position: relative;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8);
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.modal-overlay.open .modal-window {
    transform: translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.8rem;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    transition: var(--transition-smooth);
}

.modal-close-btn:hover {
    color: var(--primary-cyan);
}

.modal-badge {
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    color: var(--primary-cyan);
    text-transform: uppercase;
}

.modal-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--text-pure);
    margin: 0.5rem 0;
}

.modal-header p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
    .hero-meta-top {
        padding: 0 2rem;
    }
    
    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2.8rem;
    }

    .footer-brand {
        max-width: 100%;
        flex: 1 1 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-brand .f-logo-top,
    .footer-brand .f-logo-bottom {
        text-align: center;
        width: 100%;
    }

    .f-desc {
        text-align: center;
        max-width: 380px;
        margin: 0.9rem auto 0 auto;
    }

    .f-website {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        margin: 0.9rem auto 0 auto;
        text-align: center;
    }

    .footer-links-group {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
    }

    .footer-quick-links-wrapper {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100%;
    }

    .footer-section-title {
        text-align: center !important;
        width: 100%;
        margin-bottom: 1.4rem;
    }

    .footer-sub-cols::before,
    .footer-links-group > .footer-links-col::before,
    .footer-links-group > .footer-links-col::after {
        display: none !important;
    }

    .footer-sub-cols,
    .footer-links-group > .footer-links-col {
        padding-left: 0;
        padding-right: 0;
    }

    .footer-sub-cols {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
        width: 100%;
        max-width: 720px;
        margin: 0 auto;
        justify-items: center;
    }
}

@media (max-width: 768px) {
    .site-footer {
        padding: 4rem 0 2rem;
        text-align: center;
    }

    .footer-top {
        margin-bottom: 2.5rem;
    }

    .footer-sub-cols {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.8rem 2rem;
        max-width: 440px;
        width: 100%;
        margin: 0 auto;
        justify-items: center;
        text-align: center;
    }

    .footer-links-col {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        width: 100%;
    }

    .footer-links-col a {
        text-align: center;
        width: 100%;
    }

    .footer-links-col h4 {
        text-align: center !important;
        width: 100%;
        margin-bottom: 1.2rem;
    }

    .footer-links-group > .footer-links-col {
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
        padding: 0 !important;
        align-items: center;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center !important;
        justify-content: center;
        align-items: center;
    }

    .footer-bottom p {
        text-align: center !important;
    }

    .hero-cta-group {
        flex-direction: column;
        width: 100%;
    }

    .btn-hero {
        width: 100%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .footer-sub-cols {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.4rem 1.2rem;
        max-width: 360px;
    }

    .footer-links-col a {
        font-size: 0.85rem;
        margin-bottom: 0.65rem;
    }
}

/* ==========================================================================
   YENİ BÖLÜM STİLLERİ: AĞIRLIK HESAPLAMA, HAVUZ, GÜVENLİK & SÖZLÜK
   ========================================================================== */

/* --- 1. AĞIRLIK HESAPLAMA ARACI --- */
.calc-card {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 2.5rem;
    background: rgba(6, 23, 42, 0.7);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 16px;
    padding: 2.5rem;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(56, 189, 248, 0.08);
    margin-top: 2rem;
}

.calc-inputs-grid {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.calc-input-group label {
    display: block;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
    font-weight: 500;
}

.calc-input-group label strong {
    color: var(--primary-cyan);
    font-size: 1.1rem;
    margin-left: 0.4rem;
}

.calc-personal-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    background: rgba(2, 12, 24, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 1.2rem;
    align-items: end;
}

.calc-number-input-wrap,
.calc-select-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.calc-select-wrap::after {
    content: "▾";
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--primary-cyan);
    pointer-events: none;
    line-height: 1;
}

.calc-num-field {
    width: 100%;
    background: rgba(2, 12, 24, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    color: var(--text-pure);
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    height: 48px;
    min-height: 48px;
    line-height: 1.35;
    padding: 0.6rem 1rem 0.7rem 1rem;
    outline: none;
    transition: var(--transition-smooth);
    box-sizing: border-box;
}

.calc-row-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.calc-number-input-wrap .calc-num-field {
    padding-left: 0.85rem;
    padding-right: 4.8rem;
}

.calc-select-field {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-top: 0.6rem;
    padding-bottom: 0.75rem;
    padding-left: 1rem;
    padding-right: 2.5rem;
    height: 48px;
    line-height: 1.35;
}

.calc-select-field option {
    background: #06172a;
    color: #ffffff;
    font-size: 0.95rem;
    padding: 0.5rem;
}

.calc-num-field:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
    background: rgba(6, 23, 42, 0.9);
}

/* Tarayıcıların çirkin ve sayılara binen varsayılan spinner oklarını gizleme */
.calc-num-field::-webkit-inner-spin-button,
.calc-num-field::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
    display: none;
}

.calc-num-field[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.calc-input-unit {
    position: absolute;
    right: 1.9rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--primary-cyan);
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    user-select: none;
}

/* Modern, Şık Sayı Artırma / Azaltma (Stepper) Butonları */
.calc-stepper {
    position: absolute;
    right: 0.35rem;
    display: flex;
    flex-direction: column;
    gap: 2px;
    height: calc(100% - 0.7rem);
    justify-content: center;
    z-index: 2;
}

.calc-step-btn {
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.22);
    border-radius: 4px;
    color: var(--primary-cyan);
    width: 1.25rem;
    height: calc(50% - 1px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: all 0.2s ease;
}

.calc-step-btn:hover {
    background: rgba(56, 189, 248, 0.25);
    border-color: var(--primary-cyan);
    color: #ffffff;
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

.calc-step-btn:active {
    transform: scale(0.92);
    background: rgba(56, 189, 248, 0.4);
}

.calc-step-btn svg {
    pointer-events: none;
}

@media (max-width: 680px) {
    .calc-personal-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .calc-row-2col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .calc-card {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 1.5rem;
    }
}

.calc-result-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at center, rgba(14, 165, 233, 0.15) 0%, rgba(2, 12, 24, 0.8) 100%);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 12px;
    padding: 2.2rem;
}

.result-badge {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--primary-cyan);
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.result-val-wrap {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 1.2rem;
}

.result-number {
    font-family: var(--font-serif);
    font-size: 3.8rem;
    font-weight: 300;
    color: var(--text-pure);
    line-height: 1;
    text-shadow: 0 0 25px rgba(56, 189, 248, 0.4);
}

.result-unit {
    font-size: 1.2rem;
    color: var(--sand-accent);
    font-weight: 500;
}

.result-tip {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Ağırlık Dağılım Kartları (Boyun ve Kemer) */
.weight-distribution-box {
    width: 100%;
    margin: 0.4rem 0 1rem 0;
}

.split-weight-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
    width: 100%;
}

.split-weight-card {
    background: rgba(6, 23, 42, 0.75);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 10px;
    padding: 0.8rem 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: var(--transition-smooth);
}

.split-weight-card:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.2);
}

.split-weight-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
}

.split-weight-label {
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--primary-cyan);
    text-transform: uppercase;
}

.split-weight-val {
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
    font-family: var(--font-display);
    line-height: 1.15;
    margin: 2px 0;
}

.split-weight-sub {
    font-size: 0.66rem;
    color: var(--text-muted);
}

.single-weight-badge {
    background: rgba(6, 23, 42, 0.75);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 8px;
    padding: 0.6rem 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.82rem;
    color: #cbd5e1;
    width: 100%;
    box-sizing: border-box;
}

.single-weight-badge strong {
    color: var(--primary-cyan);
}

@media (max-width: 480px) {
    .split-weight-container {
        grid-template-columns: 1fr;
    }
}

/* --- HASSAS İNCE AYAR & SU İÇİ TEST KARTI STİLLERİ --- */
.fine-tune-card {
    background: rgba(6, 23, 42, 0.7);
    border: 1px solid rgba(56, 189, 248, 0.22);
}

.fine-tune-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 0.35rem;
}

.fine-tune-title {
    font-size: 1.15rem;
    color: var(--text-pure);
    margin: 0;
    font-weight: 600;
}

.fine-tune-badge {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    padding: 0.25rem 0.65rem;
    border-radius: 20px;
    font-weight: 600;
}

.fine-tune-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

.trim-buoyancy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.trim-opt-btn {
    background: rgba(2, 12, 24, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.75rem 0.6rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    font-family: inherit;
}

.trim-opt-btn:hover {
    border-color: rgba(56, 189, 248, 0.4);
    background: rgba(6, 23, 42, 0.9);
}

.trim-opt-btn.active {
    border-color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.15);
    box-shadow: 0 0 14px rgba(56, 189, 248, 0.2);
}

.trim-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-bottom: 0.1rem;
}

.trim-dot.neutral { background: var(--primary-cyan); box-shadow: 0 0 8px rgba(56, 189, 248, 0.6); }
.trim-dot.negative { background: #f87171; box-shadow: 0 0 8px rgba(248, 113, 113, 0.6); }
.trim-dot.positive { background: #60a5fa; box-shadow: 0 0 8px rgba(96, 165, 250, 0.6); }

.trim-btn-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-pure);
}

.trim-btn-sub {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.trim-posture-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.trim-posture-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: rgba(2, 12, 24, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    cursor: pointer;
    text-align: left;
    transition: var(--transition-smooth);
    font-family: inherit;
}

.trim-posture-btn:hover {
    border-color: rgba(56, 189, 248, 0.4);
    background: rgba(6, 23, 42, 0.9);
}

.trim-posture-btn.active {
    border-color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.14);
    box-shadow: 0 0 14px rgba(56, 189, 248, 0.2);
}

.trim-posture-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-pure);
}

.trim-posture-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.trim-posture-tag {
    font-size: 0.72rem;
    color: var(--primary-cyan);
    font-weight: 600;
    white-space: nowrap;
}

.trim-posture-tag.warn {
    color: #fbbf24;
}

.trim-suit-info {
    background: rgba(2, 12, 24, 0.5);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.trim-suit-badge {
    color: var(--primary-cyan);
    font-weight: 600;
    margin-right: 0.35rem;
}

.fine-tune-weight-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    margin: 0.4rem 0 1rem;
}

.fine-tune-diff-badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.12);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    border: 1px solid rgba(56, 189, 248, 0.25);
}

.trim-split-card {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
    background: rgba(2, 12, 24, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    margin-bottom: 0.9rem;
    text-align: center;
    transition: all 0.3s ease;
}

.trim-split-card.single-col {
    grid-template-columns: 1fr;
}

.trim-split-divider {
    width: 1px;
    height: 32px;
    background: rgba(255, 255, 255, 0.12);
}

.trim-split-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.trim-split-num {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-pure);
}

.trim-sub-delta {
    font-size: 0.72rem;
    color: var(--primary-cyan);
    font-weight: 500;
    margin-left: 0.25rem;
}

.trim-recipe-box {
    background: rgba(2, 12, 24, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    margin-bottom: 0.9rem;
    width: 100%;
    text-align: left;
}

.trim-recipe-title {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary-cyan);
    margin-bottom: 0.35rem;
}

.trim-recipe-p {
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.45;
    margin: 0;
}

.trim-advice-pill {
    width: 100%;
    font-size: 0.75rem;
    color: #34d399;
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.2);
    border-radius: 6px;
    padding: 0.6rem 0.85rem;
    text-align: left;
    line-height: 1.4;
}

@media (max-width: 580px) {
    .trim-buoyancy-grid {
        grid-template-columns: 1fr;
    }
}

/* --- 4. TERİMLER SÖZLÜĞÜ --- */
.glossary-search-box {
    position: relative;
    max-width: 540px;
    margin: 2rem auto;
}

.glossary-search-box input {
    width: 100%;
    background: rgba(3, 14, 27, 0.8);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 30px;
    padding: 0.9rem 1.4rem 0.9rem 3rem;
    color: var(--text-pure);
    font-size: 0.92rem;
    outline: none;
    font-family: inherit;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.glossary-search-box input:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.35);
}

.glossary-search-box .search-icon {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    opacity: 0.6;
}

.glossary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.glossary-item {
    background: rgba(6, 23, 42, 0.55);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.glossary-item:hover {
    border-color: rgba(56, 189, 248, 0.35);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.glossary-item h4 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text-pure);
    margin-bottom: 0.5rem;
}

.glossary-item p {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.55;
    flex-grow: 1;
    margin-bottom: 1rem;
}

.glossary-tag {
    align-self: flex-start;
    font-size: 0.7rem;
    color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Responsive Düzenlemeler */
@media (max-width: 1024px) {
    .calc-card {
        grid-template-columns: 1fr;
    }

    .glossary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .glossary-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   ALT SAYFALAR (SUBPAGES) GENEL STİLLERİ
   ========================================================================== */
.subpage-hero {
    position: relative;
    padding: 10rem 0 4rem;
    background: radial-gradient(circle at 50% 20%, rgba(14, 165, 233, 0.12), transparent 70%),
                linear-gradient(180deg, #020b14 0%, #031326 100%);
    border-bottom: 1px solid var(--border-glass);
    text-align: center;
    overflow: hidden;
}

.subpage-hero .hero-tag {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
}

.subpage-hero .hero-main-title {
    font-family: var(--font-serif);
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    color: var(--text-pure);
    line-height: 1.15;
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.subpage-hero .hero-main-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 760px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Kategori Filtre Butonları */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin: 2.5rem 0 1rem;
    flex-wrap: wrap;
}

.filter-tab-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    padding: 0.6rem 1.4rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.filter-tab-btn:hover {
    color: var(--text-pure);
    border-color: rgba(56, 189, 248, 0.4);
    background: rgba(56, 189, 248, 0.08);
}

.filter-tab-btn.active {
    background: var(--primary-cyan);
    color: #020c18;
    border-color: var(--primary-cyan);
    font-weight: 600;
}

/* Bilgi Kartları ve Izgaraları */
.content-section {
    padding: 5rem 0;
    position: relative;
    z-index: 2;
}

.info-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.info-detail-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 2.2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.info-detail-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-glass-glow);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.info-card-badge {
    align-self: flex-start;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    padding: 0.25rem 0.8rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.2rem;
}

.info-card-badge.warning {
    color: #f87171;
    background: rgba(248, 113, 113, 0.1);
    border-color: rgba(248, 113, 113, 0.2);
}

.info-card-badge.gold {
    color: var(--sand-accent);
    background: rgba(212, 175, 55, 0.1);
    border-color: rgba(212, 175, 55, 0.2);
}

.info-card-icon {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.info-detail-card h3 {
    font-family: var(--font-serif);
    font-size: 1.45rem;
    color: var(--text-pure);
    margin-bottom: 0.9rem;
    line-height: 1.3;
}

.info-detail-card p {
    color: var(--text-subtle);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.2rem;
    flex-grow: 1;
}

.info-highlight-box {
    background: rgba(255, 255, 255, 0.03);
    border-left: 3px solid var(--primary-cyan);
    padding: 0.9rem 1.1rem;
    border-radius: 0 6px 6px 0;
    font-size: 0.88rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.info-highlight-box.warning {
    border-left-color: #f87171;
    background: rgba(248, 113, 113, 0.05);
}

/* Tablo Stilleri */
.table-responsive {
    overflow-x: auto;
    margin: 2rem 0;
    border: 1px solid var(--border-glass);
    border-radius: 8px;
    background: var(--bg-surface);
}

.modern-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
    text-align: left;
}

.modern-table th {
    background: rgba(255, 255, 255, 0.04);
    color: var(--primary-cyan);
    font-family: var(--font-serif);
    font-weight: 600;
    padding: 1.1rem 1.4rem;
    border-bottom: 1px solid var(--border-glass);
    letter-spacing: 0.05em;
}

.modern-table td {
    padding: 1rem 1.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    vertical-align: middle;
}

.modern-table tr:hover td {
    background: rgba(56, 189, 248, 0.04);
}

/* Adım Listeleri */
.step-guide-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .step-guide-grid {
        grid-template-columns: 1fr !important;
        gap: 1.2rem;
    }

    .step-card {
        padding: 1.5rem 1.25rem;
    }
}

.step-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 10px;
    padding: 2rem;
    position: relative;
    transition: var(--transition-smooth);
}

.step-card:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-3px);
}

.step-card-num {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: rgba(56, 189, 248, 0.2);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.step-card h4 {
    font-size: 1.2rem;
    color: var(--text-pure);
    margin-bottom: 0.8rem;
}

.step-card p {
    color: var(--text-subtle);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* Modal Form Eklemeleri */
#emailModal .modal-window {
    max-width: 520px;
}

#emailModal .form-group {
    margin-bottom: 1.1rem;
}

#emailModal .form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
    font-weight: 500;
}

#emailModal .form-group input,
#emailModal .form-group textarea {
    width: 100%;
    padding: 0.85rem 1.1rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    color: var(--text-pure);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

#emailModal .form-group input:focus,
#emailModal .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-cyan);
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
    background: rgba(255, 255, 255, 0.07);
}

/* ==========================================================================
   ANA SAYFA MİSYON, VİZYON VE BRANŞLAR TANITIM
   ========================================================================== */
.mission-vision-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
    margin-top: 3rem;
}

.mv-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 2.2rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.mv-card:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-4px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.5), 0 0 20px rgba(56, 189, 248, 0.12);
}

.mv-card-header {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    margin-bottom: 1.1rem;
}

.mv-icon {
    font-size: 2rem;
    line-height: 1;
}

.mv-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--text-pure);
    margin: 0;
}

.mv-card p {
    color: var(--text-subtle);
    font-size: 0.96rem;
    line-height: 1.75;
    margin: 0;
}

/* Ana Sayfa Branşlar Tanıtım Bölümü */
.branches-intro-section {
    padding: 6rem 0;
    position: relative;
    z-index: 2;
    background: linear-gradient(180deg, rgba(2, 11, 20, 0.4) 0%, rgba(3, 19, 38, 0.6) 100%);
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
}

.branch-intro-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: 14px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.branch-intro-card:hover {
    border-color: var(--primary-cyan);
    transform: translateY(-6px);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.65), 0 0 30px rgba(56, 189, 248, 0.2);
}

.branch-intro-icon {
    font-size: 2.8rem;
    margin-bottom: 1.2rem;
    display: inline-block;
}

.branch-intro-card h3 {
    font-family: var(--font-serif);
    font-size: 1.7rem;
    color: var(--text-pure);
    margin-bottom: 0.8rem;
}

.branch-intro-card p {
    color: var(--text-subtle);
    font-size: 0.95rem;
    line-height: 1.75;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.branch-intro-card .btn-hero {
    align-self: center;
    padding: 0.8rem 1.6rem;
    font-size: 0.82rem;
    white-space: nowrap;
    text-align: center;
    margin-top: auto;
}

@media (max-width: 900px) {
    .mission-vision-grid {
        grid-template-columns: 1fr;
    }
}

/* Hayati Yasal Uyarı Kutusu */
.legal-warning-banner {
    margin-top: 3.5rem;
    padding: 1.6rem 2.5rem;
    background: linear-gradient(135deg, rgba(28, 7, 12, 0.75) 0%, rgba(16, 4, 7, 0.85) 100%);
    border: 1px solid rgba(239, 68, 68, 0.35);
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 0 25px rgba(239, 68, 68, 0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-align: center;
    position: relative;
    max-width: 1060px;
    margin-left: auto;
    margin-right: auto;
}

.legal-warning-banner p {
    margin: 0;
    color: #e2e8f0;
    font-size: 0.98rem;
    line-height: 1.75;
    letter-spacing: 0.01em;
}

.warning-highlight-title {
    color: #fb923c;
    font-weight: 700;
    letter-spacing: 0.03em;
    display: inline;
}

.warning-icon {
    margin-right: 0.4rem;
    font-style: normal;
}

.warning-highlight-bold {
    color: #ffffff;
    font-weight: 700;
}




/* ==========================================================================
   METRE METRE SERBEST DALIŞ & DERİNLİK YOLCULUĞU (DEPTH TIMELINE)
   ========================================================================== */

.depth-journey-section {
    padding: 9.5rem 0 8rem;
    position: relative;
    z-index: 2;
    background: radial-gradient(ellipse at 50% 0%, rgba(14, 116, 144, 0.12) 0%, transparent 60%),
                linear-gradient(180deg, rgba(2, 11, 20, 0.95) 0%, rgba(1, 6, 12, 0.98) 50%, #000408 100%);
    border-top: 1px solid var(--border-glass);
}

.depth-nav-pills {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 2.5rem auto 4.5rem;
    max-width: 980px;
}

.depth-pill-btn {
    background: rgba(3, 19, 38, 0.7);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    padding: 0.6rem 1.25rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.depth-pill-btn:hover {
    background: rgba(56, 189, 248, 0.15);
    border-color: var(--primary-cyan);
    color: var(--text-pure);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.25);
}

.depth-timeline-wrapper {
    position: relative;
    max-width: 1050px;
    margin: 0 auto;
    padding-left: 8.5rem;
}

/* Sol Dikey Dalış Halatı Hattı */
.depth-rope-track {
    position: absolute;
    left: 6.5rem;
    top: 2rem;
    bottom: 2rem;
    width: 2px;
    background: linear-gradient(180deg, #38bdf8 0%, rgba(56, 189, 248, 0.6) 40%, rgba(14, 116, 144, 0.4) 80%, rgba(56, 189, 248, 0.1) 100%);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
}

/* Her Derinlik İstasyonu / Aşaması */
.depth-stage-row {
    position: relative;
    margin-bottom: 4.5rem;
}

.depth-stage-row:last-child {
    margin-bottom: 0;
}

/* Halattaki Metre Gösterge Düğümü ve Sol Metin Alanı */
.depth-rope-node {
    position: absolute;
    left: -8.5rem;
    top: 2.2rem;
    width: 6.5rem;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding-right: 1.4rem;
    pointer-events: none;
}

.node-pin {
    position: absolute;
    right: -8px;
    top: 1px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #020b14;
    border: 3px solid var(--primary-cyan);
    box-shadow: 0 0 15px var(--primary-cyan);
    z-index: 2;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.depth-stage-row:hover .node-pin {
    transform: scale(1.2);
    box-shadow: 0 0 20px var(--primary-cyan), 0 0 8px #fff;
}

.node-meter {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-cyan);
    letter-spacing: 0.05em;
    line-height: 1.1;
    text-align: right;
    white-space: nowrap;
}

.node-label {
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-subtle);
    margin-top: 3px;
    text-align: right;
    line-height: 1.2;
}

/* Aşama Kartı */
.depth-card {
    background: rgba(3, 19, 38, 0.65);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 2.4rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.depth-card:hover {
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 30px rgba(56, 189, 248, 0.12);
    transform: translateY(-4px);
}

.depth-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 1.2rem;
}

.depth-stage-title-wrap {
    max-width: 650px;
}

.depth-badge-level {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--primary-cyan);
    background: rgba(56, 189, 248, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    margin-bottom: 0.6rem;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.depth-stage-title {
    font-family: var(--font-serif);
    font-size: clamp(1.4rem, 2.5vw, 1.85rem);
    color: var(--text-pure);
    margin: 0;
    line-height: 1.3;
}

/* Fizyolojik Parametreler Grid'i */
.depth-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.9rem;
    margin-bottom: 1.6rem;
}

.metric-pill {
    background: rgba(1, 10, 20, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.8rem 1rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
}

.metric-pill-label {
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-subtle);
    margin-bottom: 0.3rem;
}

.metric-pill-val {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-pure);
}

.metric-pill-val.highlight-cyan { color: var(--primary-cyan); }
.metric-pill-val.highlight-orange { color: #fb923c; }
.metric-pill-val.highlight-purple { color: #a78bfa; }
.metric-pill-val.highlight-green { color: #34d399; }

/* Detaylı Açıklamalar */
.depth-explanation {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.depth-explanation p {
    margin-bottom: 1rem;
}

.depth-explanation p:last-child {
    margin-bottom: 0;
}

/* Protokol Listesi */
.depth-actions-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 0.8rem;
}

.depth-actions-list li {
    background: rgba(255, 255, 255, 0.02);
    border-left: 2px solid var(--primary-cyan);
    padding: 0.7rem 1rem;
    border-radius: 0 8px 8px 0;
    font-size: 0.9rem;
    color: var(--text-pure);
    line-height: 1.5;
}

.depth-actions-list li strong {
    color: var(--primary-cyan);
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.2rem;
}

/* Kritik Güvenlik Notu / Pro-Tip */
.depth-protip {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: 10px;
    padding: 1rem 1.3rem;
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    color: #fde68a;
    font-size: 0.9rem;
    line-height: 1.6;
}

.depth-protip.critical-danger {
    background: rgba(239, 68, 68, 0.09);
    border-color: rgba(239, 68, 68, 0.35);
    color: #fca5a5;
}

.protip-icon {
    font-size: 1.3rem;
    line-height: 1;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

@media (max-width: 768px) {
    .depth-timeline-wrapper {
        padding-left: 5.8rem;
    }
    .depth-rope-track {
        left: 4.2rem;
    }
    .depth-rope-node {
        left: -5.8rem;
        top: 1.8rem;
        width: 4.2rem;
        padding-right: 0.9rem;
    }
    .node-pin {
        right: -7px;
        top: 1px;
        width: 14px;
        height: 14px;
        border-width: 2.5px;
    }
    .node-meter {
        font-size: 0.95rem;
    }
    .node-label {
        font-size: 0.52rem;
        letter-spacing: 0.08em;
    }
    .depth-card {
        padding: 1.5rem;
    }
    .depth-nav-pills {
        gap: 0.5rem;
    }
    .depth-pill-btn {
        padding: 0.5rem 0.9rem;
        font-size: 0.78rem;
    }
}

@media (max-width: 480px) {
    .depth-timeline-wrapper {
        padding-left: 5.2rem;
    }
    .depth-rope-track {
        left: 3.7rem;
    }
    .depth-rope-node {
        left: -5.2rem;
        width: 3.7rem;
        padding-right: 0.8rem;
    }
    .node-pin {
        right: -6px;
        width: 12px;
        height: 12px;
        border-width: 2px;
    }
    .node-meter {
        font-size: 0.82rem;
    }
    .node-label {
        font-size: 0.48rem;
        letter-spacing: 0.05em;
    }
    .depth-card {
        padding: 1.15rem;
    }
}

/* ==========================================================================
   İNTERAKTİF NEFES EGZERSİZİ & APNEA ANTRENÖRÜ SİSTEMİ
   ========================================================================== */

.breath-dashboard-main {
    padding-top: 3rem;
    padding-bottom: 4rem;
    position: relative;
    z-index: 2;
}

.breath-dashboard-container {
    width: 94%;
    max-width: 1360px;
    margin: 0 auto;
}

/* Egzersiz Tipi Seçici & Üst Kontrol Çubuğu (1. Resimdeki Orijinal Hap Bar) */
.exercise-type-selector {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    margin: 0 auto 1.25rem auto;
    padding: 0.45rem 0.85rem;
    background: rgba(6, 23, 42, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass-glow);
    border-radius: 30px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    width: fit-content;
    max-width: 100%;
}

.exercise-type-btn {
    padding: 0.45rem 1.1rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(2, 12, 24, 0.7);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.84rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    white-space: nowrap;
}

.exercise-type-btn:hover {
    background: rgba(56, 189, 248, 0.12);
    border-color: rgba(56, 189, 248, 0.4);
    color: var(--light-aqua);
}

.exercise-type-btn.active {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.3) 0%, rgba(14, 165, 233, 0.5) 100%);
    border-color: var(--primary-cyan);
    color: #ffffff;
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.45);
    font-weight: 600;
}

.btn-toolbar-link {
    padding: 0.45rem 1.05rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(2, 12, 24, 0.7);
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.84rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    white-space: nowrap;
}

.btn-toolbar-link:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: var(--primary-cyan);
    color: var(--text-pure);
}

.btn-toolbar-link.btn-toolbar-danger {
    color: #fb7185;
    border-color: rgba(244, 63, 94, 0.3);
}

.btn-toolbar-link.btn-toolbar-danger:hover {
    background: rgba(244, 63, 94, 0.15);
    border-color: #fb7185;
    color: #ffe4e6;
    box-shadow: 0 0 12px rgba(244, 63, 94, 0.25);
}

/* 2 Kolonlu Antrenman Konsolu */
.breath-trainer-container {
    display: grid;
    grid-template-columns: 0.95fr 1.08fr;
    gap: 1.5rem;
    align-items: stretch;
    margin-bottom: 3rem;
}

/* Sol Kolon: Canlı Akış Sayacı & İnteraktif Çember Kartı */
.breath-circle-wrapper {
    background: rgba(6, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass-glow);
    border-radius: 22px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.breath-circle-wrapper.live-active {
    border-color: rgba(56, 189, 248, 0.6);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(56, 189, 248, 0.2);
}

.breath-live-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.65rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.breath-live-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 0.88rem;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--text-pure);
}

.breath-live-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.28rem 0.75rem;
    border-radius: 25px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #34d399;
}

.breath-live-badge.live-pulsing {
    background: rgba(56, 189, 248, 0.2);
    border-color: var(--primary-cyan);
    color: var(--light-aqua);
    animation: liveBadgeGlow 2s infinite alternate;
}

.breath-live-badge.paused {
    background: rgba(245, 158, 11, 0.2);
    border-color: #f59e0b;
    color: #fbbf24;
}

.live-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    display: inline-block;
}

.breath-live-badge.live-pulsing .live-status-dot {
    animation: dotPulse 1.2s infinite;
}

/* Seviye Seçim Butonları: 1. Resimdeki 2x2 Grid Düzeni */
.level-selector-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.45rem;
    margin-bottom: 0.75rem;
}

.apnea-level-btn {
    padding: 0.45rem 0.6rem;
    border-radius: 8px;
    background: rgba(2, 12, 24, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.apnea-level-btn:hover {
    border-color: var(--border-glass-glow);
    color: var(--text-primary);
    background: rgba(56, 189, 248, 0.08);
}

.apnea-level-btn.active {
    background: rgba(56, 189, 248, 0.18);
    border-color: var(--primary-cyan);
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
}

/* Otomatik & Özel Antrenman Parametreleri Formu */
.auto-trainer-card {
    background: rgba(2, 12, 24, 0.65);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 14px;
    padding: 0.85rem 1rem;
    margin-bottom: 0.75rem;
}

.auto-trainer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.65rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.auto-trainer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.65rem;
}

.auto-param-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.auto-param-item label {
    font-size: 0.74rem;
    font-weight: 500;
    color: var(--text-muted);
}

.auto-input {
    width: 100%;
    background: rgba(6, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 6px;
    padding: 0.38rem 0.65rem;
    color: var(--text-pure);
    font-family: var(--font-sans);
    font-size: 0.8rem;
    transition: border-color 0.3s ease;
}

.auto-input:focus {
    outline: none;
    border-color: var(--primary-cyan);
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.3);
}

.auto-input:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    background: rgba(2, 8, 16, 0.7);
}

.pb-input-group {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.pb-toggle-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.55rem;
    border-radius: 6px;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: var(--light-aqua);
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition-smooth);
}

.pb-toggle-badge.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pb-toggle-badge.active {
    background: rgba(16, 185, 129, 0.2);
    border-color: #10b981;
    color: #6ee7b7;
}

/* Canlı Odak Alanı & Nefes Halkası */
.breath-live-focus-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0;
}

.breath-meta-stats {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 0.75rem;
    padding: 0.45rem 1rem;
    background: rgba(2, 12, 24, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breath-meta-stats span:first-child {
    font-weight: 600;
    color: var(--light-aqua);
}

.breath-circle-outer {
    position: relative;
    width: 190px;
    height: 190px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle, rgba(2, 12, 24, 0.85) 0%, rgba(6, 23, 42, 0.95) 70%);
    border: 2px dashed rgba(56, 189, 248, 0.3);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(56, 189, 248, 0.05);
    margin: 0.25rem auto 0.75rem auto;
}

.breath-circle-inner {
    width: 115px;
    height: 115px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle, #2dd4bf 0%, #0d9488 65%, #042f2e 100%);
    border: none;
    box-shadow: 0 0 25px rgba(45, 212, 191, 0.5);
    transition-property: transform, border-color, box-shadow, background;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1);
    will-change: transform;
}

/* Nefes Alma Evresi: Büyür ve Turkuaz Işıldar */
.breath-circle-inner.breath-inhale {
    transform: scale(1.42);
    background: radial-gradient(circle, #38bdf8 0%, #0284c7 65%, #082f49 100%);
    box-shadow: 0 0 35px rgba(56, 189, 248, 0.7);
}

/* Nefes Tutma Evresi: Sabit Kalır ve Amber/Altın Işıldar */
.breath-circle-inner.breath-hold {
    transform: scale(1.42);
    background: radial-gradient(circle, #fbbf24 0%, #d97706 65%, #451a03 100%);
    box-shadow: 0 0 35px rgba(245, 158, 11, 0.7);
}

.breath-status {
    font-family: var(--font-sans);
    font-size: 0.76rem;
    letter-spacing: 0.1em;
    font-weight: 800;
    color: #042f2e;
    margin-bottom: 0.1rem;
    text-transform: uppercase;
}

.breath-timer-display {
    font-family: var(--font-sans);
    font-size: 1.65rem;
    font-weight: 900;
    color: #042f2e;
    line-height: 1;
}

.breath-circle-inner.breath-inhale .breath-status,
.breath-circle-inner.breath-inhale .breath-timer-display {
    color: #082f49;
}

.breath-circle-inner.breath-hold .breath-status,
.breath-circle-inner.breath-hold .breath-timer-display {
    color: #451a03;
}

/* Canlı Faz Yönergesi */
.breath-phase-instruction {
    text-align: center;
    font-size: 0.82rem;
    color: #cbd5e1;
    line-height: 1.45;
    margin: 0.65rem 0;
    padding: 0.55rem 0.75rem;
    border-radius: 10px;
    background: rgba(2, 12, 24, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.pb-success-card {
    background: rgba(16, 185, 129, 0.12) !important;
    border-color: rgba(16, 185, 129, 0.4) !important;
}

/* Kontroller: 1. Resimdeki Orijinal Butonlar */
.breath-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.breath-controls .btn-primary {
    padding: 0.5rem 1.4rem;
    border-radius: 20px;
    font-size: 0.86rem;
    font-weight: 600;
}

.breath-controls .btn-ghost {
    padding: 0.5rem 1.4rem;
    border-radius: 20px;
    font-size: 0.86rem;
    font-weight: 500;
}

.btn-danger {
    background: linear-gradient(135deg, #f43f5e 0%, #e11d48 100%);
    color: #ffffff;
    border: none;
    padding: 0.5rem 1.4rem;
    border-radius: 20px;
    font-family: var(--font-sans);
    font-size: 0.86rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(244, 63, 94, 0.4);
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(244, 63, 94, 0.6);
}

/* Ses & Ayarlar Çubuğu */
.audio-controls-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    padding-top: 0.65rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.btn-audio-toggle {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 0.78rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: color 0.3s ease;
}

.btn-audio-toggle:hover {
    color: var(--primary-cyan);
}

.sound-settings-panel {
    margin-top: 0.85rem;
    padding: 1rem;
    background: rgba(2, 12, 24, 0.9);
    border: 1px solid var(--border-glass-glow);
    border-radius: 12px;
}

.sound-settings-title {
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--primary-cyan);
    margin-bottom: 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.sound-setting-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.65rem;
}

.sound-setting-row:last-child {
    margin-bottom: 0;
}

.sound-setting-row label {
    font-size: 0.74rem;
    color: var(--text-muted);
}

/* Sağ Kolon: Canlı Çizelge & Güvenlik Kartı (1. Resimdeki Orijinal Düzen) */
.apnea-table-card {
    background: rgba(6, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass-glow);
    border-radius: 22px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
    margin-bottom: 0.85rem;
}

.apnea-table-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.85rem;
}

.apnea-table-card-header h3 {
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-pure);
    margin: 0;
}

.apnea-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.35rem;
}

.apnea-table th {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--primary-cyan);
    padding: 0.35rem 0.5rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.apnea-table th.col-total {
    text-align: right;
}

.apnea-table td {
    background: rgba(2, 12, 24, 0.5);
    padding: 0.4rem 0.65rem;
    font-size: 0.82rem;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.apnea-table tr td:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
    font-weight: 700;
    color: #ffffff;
    width: 75px;
    white-space: nowrap;
}

.apnea-table tr td:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    text-align: right;
    font-weight: 600;
    color: var(--primary-cyan);
    font-family: monospace, sans-serif;
    font-size: 0.85rem;
}

.apnea-table tr.active-row td {
    background: rgba(56, 189, 248, 0.18) !important;
    border-top: 1px solid rgba(56, 189, 248, 0.5);
    border-bottom: 1px solid rgba(56, 189, 248, 0.5);
    color: #ffffff;
}

.apnea-table tr.active-row td:first-child {
    border-left: 3px solid var(--primary-cyan);
}

.apnea-table tr.active-row td:last-child {
    border-right: 1px solid rgba(56, 189, 248, 0.5);
}

.apnea-phases-container {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* 1. Resimdeki Orijinal Hap Formatı */
.apnea-phase-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.28rem 0.85rem;
    border-radius: 20px;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    font-family: monospace, sans-serif;
    white-space: nowrap;
}

.apnea-phase-badge.badge-cyan {
    background: rgba(14, 165, 233, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.45);
    color: #38bdf8;
}

.apnea-phase-badge.badge-amber {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.45);
    color: #fbbf24;
}

.apnea-table-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 0.65rem;
    padding-top: 0.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.82rem;
    color: var(--text-muted);
}

.val-cyan {
    color: var(--primary-cyan);
    font-weight: 700;
    font-family: monospace, sans-serif;
}

#breathModeDesc {
    font-size: 0.84rem;
    line-height: 1.45;
    color: #cbd5e1;
    margin-bottom: 0.85rem;
}

/* Kuru Antrenman ve Güvenlik Hatırlatması: 1. Resimdeki Kırmızı Kart */
.info-highlight-box.warning {
    background: rgba(244, 63, 94, 0.06);
    border: 1px solid rgba(244, 63, 94, 0.28);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    margin-top: 0;
}

.info-highlight-box.warning strong {
    font-size: 0.84rem;
    color: #fb7185;
}

.info-highlight-box.warning p {
    font-size: 0.78rem;
    color: #fca5a5;
    line-height: 1.4;
    margin: 0;
}

/* Modallar (Rehber & Güvenlik Protokolü) */
.breath-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
    padding: 1.5rem;
}

.breath-modal.active {
    opacity: 1;
    visibility: visible;
}

.breath-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(1, 6, 13, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.breath-modal-content {
    position: relative;
    z-index: 2;
    background: rgba(6, 23, 42, 0.95);
    border: 1px solid var(--border-glass-glow);
    border-radius: 20px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
    width: 100%;
    max-width: 680px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px) scale(0.97);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.breath-modal.active .breath-modal-content {
    transform: translateY(0) scale(1);
}

.breath-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.1rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.breath-header-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    color: var(--text-pure);
    margin: 0;
}

.breath-modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s ease;
}

.breath-modal-close:hover {
    color: var(--text-pure);
}

.breath-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.breath-modal-body h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--primary-cyan);
    margin: 1.25rem 0 0.5rem 0;
}

.breath-modal-body h4:first-child {
    margin-top: 0;
}

.guide-step-card {
    background: rgba(2, 12, 24, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 10px;
    padding: 0.75rem 0.85rem;
    margin-bottom: 0.65rem;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.guide-step-num {
    background: rgba(56, 189, 248, 0.2);
    border: 1px solid var(--primary-cyan);
    color: var(--light-aqua);
    font-weight: 700;
    width: 22px;
    height: 22px;
    min-width: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    margin-top: 0.15rem;
}

/* Responsive Düzenlemeler */
@media (max-width: 992px) {
    .breath-trainer-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .auto-trainer-grid {
        grid-template-columns: 1fr;
    }
    .exercise-type-selector {
        border-radius: 16px;
        flex-direction: column;
        align-items: stretch;
    }
}

/* ==========================================================
   DALIŞ NOKTALARI GÖRSEL KARTLARI (SPOT POSTER CARDS)
   ========================================================== */
.dive-spots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 2.2rem;
    margin-top: 2.5rem;
}

.dive-spot-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: #06172a;
    border: 1px solid rgba(56, 189, 248, 0.22);
    min-height: 520px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(56, 189, 248, 0.08);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s ease, border-color 0.45s ease;
    text-decoration: none;
    color: inherit;
}

.dive-spot-card:hover {
    transform: translateY(-8px);
    border-color: rgba(56, 189, 248, 0.55);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7), 0 0 35px rgba(56, 189, 248, 0.3);
}

.spot-card-media {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.spot-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.dive-spot-card:hover .spot-card-img {
    transform: scale(1.07);
}

.spot-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(2, 12, 24, 0.98) 0%,
        rgba(2, 12, 24, 0.88) 40%,
        rgba(2, 12, 24, 0.45) 70%,
        rgba(2, 12, 24, 0.15) 100%
    );
    z-index: 2;
    pointer-events: none;
}

.spot-card-badge-top {
    position: absolute;
    top: 1.25rem;
    left: 1.25rem;
    z-index: 3;
    background: rgba(2, 12, 24, 0.85);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: #38bdf8;
    backdrop-filter: blur(8px);
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    max-width: 55%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.spot-card-photo-caption {
    font-size: 0.72rem;
    color: #94a3b8;
    margin-bottom: 0.5rem;
    font-style: italic;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.spot-card-content {
    position: relative;
    z-index: 3;
    padding: 2.2rem 1.85rem 1.6rem;
    display: flex;
    flex-direction: column;
}

.spot-card-location {
    font-size: 0.75rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--primary-cyan, #38bdf8);
    margin-bottom: 0.65rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.spot-card-title {
    font-family: var(--font-serif, 'Cormorant Garamond', Georgia, serif);
    font-size: 1.7rem;
    font-weight: 600;
    color: #ffffff;
    line-height: 1.25;
    margin-bottom: 0.75rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

.spot-card-desc {
    font-size: 0.9rem;
    color: #cbd5e1;
    line-height: 1.55;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.spot-card-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.12);
    margin-bottom: 1rem;
    width: 100%;
}

.spot-card-meta {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.45rem !important;
    font-size: 0.88rem;
    color: #e2e8f0;
    margin-bottom: 1.25rem;
    width: 100% !important;
}

.spot-meta-item {
    display: flex !important;
    align-items: baseline !important;
    gap: 0.45rem !important;
    width: 100% !important;
}

.spot-meta-label {
    color: #94a3b8;
    font-size: 0.85rem;
    font-weight: 500;
}

.spot-meta-val {
    color: #ffffff;
    font-weight: 700;
    font-size: 0.88rem;
}

@media (max-width: 768px) {
    .dive-spots-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .dive-spot-card {
        min-height: 480px;
    }
    .spot-card-title {
        font-size: 1.5rem;
    }
}

/* ==========================================================
   PORTAL SWITCHER & İSTATİSTİK BARLARI (DALIŞ NOKTALARI)
   ========================================================== */
.portal-switcher {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.25rem;
    margin: 1.5rem auto 2.5rem auto;
    flex-wrap: wrap;
    max-width: 860px;
    width: 100%;
}

.portal-switch-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.95rem 2.2rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 1.05rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-sizing: border-box;
    font-family: inherit;
    border: 1.5px solid transparent;
}

.portal-switch-btn.active {
    background: rgba(56, 189, 248, 0.16);
    color: #ffffff;
    border-color: var(--primary-cyan, #38bdf8);
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.35);
}

.portal-switch-btn.inactive {
    background: rgba(6, 23, 42, 0.75);
    color: var(--text-muted, #94a3b8);
    border-color: rgba(255, 255, 255, 0.12);
}

.portal-switch-btn.inactive:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.4);
    color: #ffffff;
    transform: translateY(-2px);
}

/* İstatistik Kutuları */
.stats-bar {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 1.5rem;
    margin: 0 auto 2.5rem auto;
    flex-wrap: wrap;
    max-width: 860px;
    width: 100%;
}

.stats-item {
    background: rgba(6, 23, 42, 0.65);
    border: 1px solid rgba(56, 189, 248, 0.22);
    border-radius: 16px;
    padding: 1.25rem 2rem;
    min-width: 200px;
    flex: 1 1 200px;
    max-width: 270px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(12px);
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.stats-item:hover {
    transform: translateY(-3px);
    border-color: rgba(56, 189, 248, 0.5);
    box-shadow: 0 12px 30px rgba(56, 189, 248, 0.18);
}

.stats-num {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-cyan, #38bdf8);
    line-height: 1.1;
    display: block;
    font-family: var(--font-serif, 'Cormorant Garamond', Georgia, serif);
}

.stats-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-muted, #94a3b8);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1.3;
    display: block;
}

/* Bölge Filtre Çipleri */
.route-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.65rem;
    max-width: 960px;
    margin: 0 auto 2.5rem auto;
}

.route-chip {
    padding: 0.6rem 1.25rem;
    border-radius: 9999px;
    background: rgba(6, 23, 42, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #cbd5e1;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: inherit;
}

.route-chip:hover {
    border-color: rgba(56, 189, 248, 0.4);
    color: #ffffff;
    background: rgba(6, 23, 42, 0.95);
}

.route-chip.active {
    background: var(--primary-cyan, #38bdf8);
    color: #031326;
    border-color: var(--primary-cyan, #38bdf8);
    font-weight: 700;
    box-shadow: 0 0 18px rgba(56, 189, 248, 0.45);
}

/* Harita Butonu */
.spot-card-map-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    margin-top: 1rem;
    padding: 0.65rem 1rem;
    border-radius: 8px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.25);
    color: var(--primary-cyan, #38bdf8);
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s ease;
}

.spot-card-map-btn:hover {
    background: rgba(56, 189, 248, 0.25);
    border-color: var(--primary-cyan, #38bdf8);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
}

/* Sayfalama / Daha Fazla Göster Butonu */
.load-more-wrap {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

.load-more-btn {
    background: rgba(6, 23, 42, 0.85);
    border: 1.5px solid var(--primary-cyan, #38bdf8);
    color: var(--primary-cyan, #38bdf8);
    padding: 0.85rem 2.5rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.15);
}

.load-more-btn:hover {
    background: var(--primary-cyan, #38bdf8);
    color: #031326;
    box-shadow: 0 0 25px rgba(56, 189, 248, 0.45);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .portal-switcher {
        flex-direction: column;
    }
    .portal-switch-btn {
        width: 100%;
    }
    .stats-item {
        min-width: 140px;
        flex: 1 1 40%;
        padding: 1rem;
    }
    .stats-num {
        font-size: 1.75rem;
    }
}

/* ==========================================================================
   BRANŞLARA GÖRE EKİPMAN SEÇİMİ ÖZEL STİLLERİ
   ========================================================================== */
.discipline-philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.discipline-p-card {
    background: rgba(6, 23, 42, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    backdrop-filter: blur(12px);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.discipline-p-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
}

.discipline-p-card.freedive-card {
    border-top: 3px solid #38bdf8;
}
.discipline-p-card.freedive-card:hover {
    border-color: rgba(56, 189, 248, 0.5);
    box-shadow: 0 16px 36px rgba(56, 189, 248, 0.15);
}

.discipline-p-card.scuba-card {
    border-top: 3px solid #10b981;
}
.discipline-p-card.scuba-card:hover {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 16px 36px rgba(16, 185, 129, 0.15);
}

.discipline-p-card.pool-card {
    border-top: 3px solid #818cf8;
}
.discipline-p-card.pool-card:hover {
    border-color: rgba(129, 140, 248, 0.5);
    box-shadow: 0 16px 36px rgba(129, 140, 248, 0.15);
}

.discipline-p-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.discipline-p-title {
    font-family: var(--font-serif);
    font-size: 1.45rem;
    color: #ffffff;
    font-weight: 600;
    margin: 0;
}

.discipline-p-focus {
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--primary-cyan, #38bdf8);
}

.scuba-card .discipline-p-focus {
    color: #34d399;
}

.pool-card .discipline-p-focus {
    color: #a5b4fc;
}

.discipline-p-desc {
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.65;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.discipline-p-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 1rem;
}

.discipline-p-list li {
    font-size: 0.85rem;
    color: #94a3b8;
    padding: 0.35rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.discipline-p-list li strong {
    color: #f1f5f9;
}

/* Kategori Başlık Ayırıcı */
.category-section-header {
    margin: 3.5rem 0 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.category-section-header h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: #ffffff;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-section-tag {
    font-size: 0.8rem;
    padding: 0.35rem 1rem;
    border-radius: 9999px;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: var(--primary-cyan, #38bdf8);
    font-weight: 600;
}

/* Karşılaştırma Tablosu Vurguları */
.compare-badge-pill {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.compare-badge-freedive {
    background: rgba(56, 189, 248, 0.15);
    color: #38bdf8;
    border: 1px solid rgba(56, 189, 248, 0.3);
}
.compare-badge-scuba {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}
.compare-badge-pool {
    background: rgba(129, 140, 248, 0.15);
    color: #a5b4fc;
    border: 1px solid rgba(129, 140, 248, 0.3);
}

/* ==========================================================================
   KAPSAMLI MOBİL VE TABLET UYUMLULUK SİSTEMİ (RESPONSIVE ENGINE)
   ========================================================================== */

/* --- 1. MASAÜSTÜ / MOBİL MENÜ AYRIMI (BREAKPOINT: 992px) --- */
@media (min-width: 993px) {
    .menu-toggle {
        display: none !important;
    }
    .desktop-nav {
        display: flex !important;
    }
}

@media (max-width: 992px) {
    /* Masaüstü açılır menüsünü gizle, mobil hamburger butonunu göster */
    .desktop-nav {
        display: none !important;
    }
    .menu-toggle {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 6px !important;
        width: 44px !important;
        height: 44px !important;
        padding: 0 !important;
        cursor: pointer !important;
        z-index: 100002 !important;
        background: rgba(6, 23, 42, 0.7) !important;
        border: 1px solid rgba(56, 189, 248, 0.25) !important;
        border-radius: 10px !important;
        backdrop-filter: blur(8px) !important;
        -webkit-backdrop-filter: blur(8px) !important;
        transition: all 0.25s ease !important;
        box-sizing: border-box !important;
    }
    .menu-toggle:hover {
        background: rgba(56, 189, 248, 0.15) !important;
        border-color: var(--primary-cyan) !important;
    }
    .menu-toggle .bar {
        width: 20px !important;
        height: 2px !important;
        background: var(--primary-cyan) !important;
        border-radius: 2px !important;
        transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.25s ease !important;
        transform-origin: center !important;
        display: block !important;
    }
    .menu-toggle.open {
        background: rgba(6, 23, 42, 0.85) !important;
        border-color: var(--primary-cyan) !important;
        box-shadow: 0 0 15px rgba(56, 189, 248, 0.25) !important;
    }
    .menu-toggle.open .bar:nth-child(1) {
        transform: translateY(4px) rotate(45deg) !important;
    }
    .menu-toggle.open .bar:nth-child(2) {
        transform: translateY(-4px) rotate(-45deg) !important;
    }

    .site-header {
        padding: 0.85rem 0 !important;
    }
    .header-container {
        display: flex !important;
        flex-direction: row !important;
        justify-content: space-between !important;
        align-items: center !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: clamp(1.25rem, 5vw, 2rem) !important;
        padding-right: clamp(1.25rem, 5vw, 2rem) !important;
        padding-left: max(clamp(1.25rem, 5vw, 2rem), env(safe-area-inset-left)) !important;
        padding-right: max(clamp(1.25rem, 5vw, 2rem), env(safe-area-inset-right)) !important;
    }
    .site-logo {
        font-size: 1.25rem !important;
        letter-spacing: 0.1em;
    }

    /* İki kolonlu genel kart yapılarını tek kolona düşür */
    .calc-card {
        grid-template-columns: 1fr !important;
        gap: 1.8rem !important;
        padding: 1.8rem !important;
    }
    .breath-trainer-container {
        grid-template-columns: 1fr !important;
        gap: 1.8rem !important;
    }
    .mission-vision-grid {
        grid-template-columns: 1fr !important;
    }
    .discipline-philosophy-grid {
        grid-template-columns: 1fr !important;
    }
    .philosophy-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }
}

/* --- 2. TAM EKRAN MOBİL MENÜ GELİŞTİRMELERİ --- */
.fullscreen-menu {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: rgba(1, 6, 13, 0.96) !important;
    backdrop-filter: blur(24px) !important;
    -webkit-backdrop-filter: blur(24px) !important;
    z-index: 99990 !important;
    display: flex !important;
    justify-content: center !important;
    opacity: 0 !important;
    pointer-events: none !important;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.fullscreen-menu.open {
    opacity: 1 !important;
    pointer-events: auto !important;
}

.fullscreen-menu-dialog {
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    margin: 0 auto !important;
    position: relative !important;
    z-index: 2 !important;
}

.fullscreen-menu-content {
    flex: 1 !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    width: 100% !important;
    max-width: 600px !important;
    margin: 0 auto !important;
    box-sizing: border-box !important;
    padding-top: 5.25rem !important;
    padding-bottom: 3.5rem !important;
    padding-left: clamp(1.25rem, 5vw, 2rem) !important;
    padding-right: clamp(1.25rem, 5vw, 2rem) !important;
    padding-left: max(clamp(1.25rem, 5vw, 2rem), env(safe-area-inset-left)) !important;
    padding-right: max(clamp(1.25rem, 5vw, 2rem), env(safe-area-inset-right)) !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 1.2rem !important;
}

.fs-menu-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.fs-category-badge {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: var(--primary-cyan);
    text-transform: uppercase;
    padding: 0.25rem 0.6rem;
    margin-bottom: 0.2rem;
    display: inline-flex;
    align-items: center;
    border-left: 2px solid var(--primary-cyan);
    background: rgba(56, 189, 248, 0.06);
    border-radius: 0 4px 4px 0;
    align-self: flex-start;
}

.fs-links-list {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.fs-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.1rem;
    background: rgba(6, 23, 42, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.25s ease;
    box-sizing: border-box;
}

.fs-link:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateX(4px);
}

.fs-link.active {
    background: rgba(14, 165, 233, 0.14) !important;
    border: 1px solid rgba(56, 189, 248, 0.45) !important;
    border-left: 4px solid var(--primary-cyan) !important;
    box-shadow: 0 4px 18px rgba(56, 189, 248, 0.15) !important;
}

.fs-link-info {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    text-align: left;
}

.fs-link-text {
    font-family: var(--font-serif) !important;
    font-size: 1.12rem !important;
    font-weight: 500 !important;
    color: #ffffff !important;
    letter-spacing: 0.03em !important;
    line-height: 1.2 !important;
}

.fs-link.active .fs-link-text {
    font-family: var(--font-serif) !important;
    font-size: 1.12rem !important;
    font-weight: 500 !important;
    color: #ffffff !important;
    letter-spacing: 0.03em !important;
    line-height: 1.2 !important;
}

.fs-link-desc {
    font-family: var(--font-sans) !important;
    font-size: 0.78rem !important;
    color: #94a3b8 !important;
    line-height: 1.3 !important;
}

.fs-link.active .fs-link-desc {
    color: var(--sand-accent) !important;
}

.fs-link-arrow {
    font-size: 1.35rem;
    line-height: 1;
    color: var(--primary-cyan);
    opacity: 0.5;
    transition: transform 0.2s ease, opacity 0.2s ease;
    padding-left: 0.5rem;
}

.fs-link.active .fs-link-arrow {
    opacity: 1 !important;
    transform: translateX(3px) !important;
}

.fs-link:hover .fs-link-arrow {
    opacity: 1;
    transform: translateX(3px);
}

.fs-home-link {
    background: rgba(6, 23, 42, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.07);
}

.fullscreen-menu-footer {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    color: #64748b;
    font-size: 0.8rem;
    font-family: var(--font-sans);
}

.fullscreen-menu-footer strong {
    color: var(--sand-accent);
    font-weight: 400;
}

/* --- 3. TELEFON VE KÜÇÜK EKRANLAR (<= 768px) --- */
@media (max-width: 768px) {
    /* Yatay Taşmayı Kesinlikle Engelle */
    html, body {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden !important;
        position: relative;
    }

    /* Konteyner ve Genel Tipografi */
    .container,
    .breath-dashboard-container {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: clamp(1rem, 4vw, 1.5rem) !important;
        padding-right: clamp(1rem, 4vw, 1.5rem) !important;
    }

    /* Üst Menü / Header */
    .site-header {
        padding: 0.75rem 0 !important;
    }
    .header-container {
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: clamp(1rem, 4vw, 1.5rem) !important;
        padding-right: clamp(1rem, 4vw, 1.5rem) !important;
    }
    .site-logo {
        font-size: 1.15rem !important;
    }
    
    /* Ana Sayfa Hero Bölümü - Mobilde Tam 100dvh Ekrana Kusursuz Sığma */
    .hero-section {
        height: 100vh !important;
        height: 100dvh !important;
        min-height: 100vh !important;
        min-height: 100dvh !important;
        max-height: 100vh !important;
        max-height: 100dvh !important;
        padding-top: calc(3.5rem + env(safe-area-inset-top, 0px)) !important;
        padding-bottom: 3.5rem !important;
        padding-left: 1rem !important;
        padding-right: 1rem !important;
        box-sizing: border-box !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        overflow: hidden !important;
    }
    .hero-content {
        margin-top: 0 !important;
        padding: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    .hero-title {
        font-size: clamp(2.4rem, 7.5vh, 4.2rem) !important;
        line-height: 0.92 !important;
    }
    .hero-brand-wrap {
        margin-bottom: clamp(0.35rem, 1.2vh, 0.85rem) !important;
    }
    .hero-subtitle {
        font-size: clamp(0.68rem, 1.6vh, 0.85rem) !important;
        letter-spacing: 0.25em !important;
        margin-top: 0.35rem !important;
    }
    .hero-tagline {
        font-size: clamp(0.78rem, 1.6vh, 0.92rem) !important;
        line-height: 1.4 !important;
        margin-top: 0.35rem !important;
        padding: 0 0.5rem !important;
    }
    .hero-cta-group {
        flex-direction: column !important;
        gap: clamp(0.35rem, 1vh, 0.6rem) !important;
        margin-top: clamp(0.5rem, 1.6vh, 1rem) !important;
        width: 100% !important;
        max-width: 290px !important;
    }
    .hero-cta-group .btn-hero {
        width: 100% !important;
        box-sizing: border-box !important;
        text-align: center !important;
        padding: clamp(0.48rem, 1vh, 0.7rem) 1rem !important;
        font-size: clamp(0.75rem, 1.5vh, 0.88rem) !important;
    }
    .scroll-down-indicator {
        bottom: clamp(0.35rem, 1vh, 0.75rem) !important;
        gap: 0.2rem !important;
    }
    .mouse-icon {
        width: 15px !important;
        height: 24px !important;
    }
    .scroll-text {
        font-size: 0.55rem !important;
    }
    .hero-meta-top {
        display: none !important; /* Mobilde logonun üstüne binmesini engelle */
    }

    /* Alt Sayfa Başlıkları - Header Arkasında Kalmayı Önleyen Güvenli Üst Boşluk */
    .subpage-hero {
        padding-top: calc(7.5rem + env(safe-area-inset-top, 0px)) !important;
        padding-bottom: 2.2rem !important;
        box-sizing: border-box !important;
    }
    .subpage-hero .hero-tag {
        margin-bottom: 0.85rem !important;
    }
    .subpage-hero .hero-main-title {
        font-size: clamp(1.75rem, 6.5vw, 2.4rem) !important;
        line-height: 1.2 !important;
        margin-bottom: 0.85rem !important;
        word-break: break-word !important;
    }
    .subpage-hero .hero-main-desc {
        font-size: 0.95rem !important;
        line-height: 1.65 !important;
        padding: 0 0.5rem !important;
    }

    /* Filtre Sekmeleri & Çipler */
    .filter-tabs {
        flex-wrap: wrap !important;
        gap: 0.5rem !important;
        justify-content: center !important;
    }
    .filter-tab-btn {
        padding: 0.5rem 0.9rem !important;
        font-size: 0.8rem !important;
        min-height: 40px !important;
    }

    .route-filters {
        gap: 0.45rem !important;
        justify-content: center !important;
    }
    .route-chip {
        padding: 0.45rem 0.9rem !important;
        font-size: 0.82rem !important;
        min-height: 38px !important;
    }

    /* Kart Izgaraları Tek Kolona */
    .info-cards-grid {
        grid-template-columns: 1fr !important;
        gap: 1.25rem !important;
    }
    .info-detail-card {
        padding: 1.5rem !important;
    }

    .glossary-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* Dalış Noktaları Grid */
    .dive-spots-grid {
        grid-template-columns: 1fr !important;
        gap: 1.4rem !important;
    }
    .dive-spot-card {
        min-height: 440px !important;
    }
    .spot-card-content {
        padding: 1.25rem !important;
    }
    .spot-card-title {
        font-size: 1.35rem !important;
    }
    .spot-card-desc {
        font-size: 0.86rem !important;
        line-height: 1.55 !important;
    }

    /* Modal Pencere */
    .modal-window,
    .breath-modal-content {
        padding: 1.8rem 1.2rem !important;
        width: 95% !important;
        max-width: 95% !important;
        box-sizing: border-box !important;
    }
    .modal-title,
    .breath-header-title {
        font-size: 1.4rem !important;
    }

    /* NEFES EGZERSİZİ PANELİ MOBİL DÜZENLEMELERİ (TAŞMA VE SIĞMAMA DÜZELTMESİ) */
    .breath-dashboard-main {
        padding-top: 1.25rem !important;
        padding-bottom: 3rem !important;
        width: 100% !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
        box-sizing: border-box !important;
    }
    .exercise-type-selector {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.45rem !important;
        padding: 0.55rem !important;
        border-radius: 16px !important;
        overflow: hidden !important;
    }
    .exercise-type-btn,
    .btn-toolbar-link {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        justify-content: center !important;
        padding: 0.55rem 0.75rem !important;
        font-size: 0.82rem !important;
        white-space: normal !important;
        text-align: center !important;
        line-height: 1.35 !important;
        word-break: normal !important;
    }
    .breath-trainer-container {
        grid-template-columns: 1fr !important;
        gap: 1.25rem !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }
    .breath-circle-wrapper,
    .apnea-table-card,
    .program-schedule-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding: 1.15rem 0.85rem !important;
        border-radius: 18px !important;
        overflow-x: hidden !important;
    }
    .breath-live-header {
        display: flex !important;
        flex-wrap: wrap !important;
        gap: 0.4rem !important;
        align-items: center !important;
        justify-content: space-between !important;
    }
    .breath-live-title {
        font-size: 0.82rem !important;
    }
    .breath-live-badge {
        font-size: 0.7rem !important;
        padding: 0.25rem 0.5rem !important;
    }
    .level-selector-row {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 0.45rem !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .apnea-level-btn {
        width: 100% !important;
        box-sizing: border-box !important;
        padding: 0.55rem 0.3rem !important;
        font-size: 0.76rem !important;
        text-align: center !important;
        white-space: normal !important;
    }
    .breath-circle-outer {
        width: clamp(170px, 48vw, 210px) !important;
        height: clamp(170px, 48vw, 210px) !important;
    }
    .breath-circle-inner {
        width: clamp(105px, 30vw, 135px) !important;
        height: clamp(105px, 30vw, 135px) !important;
    }
    .breath-timer {
        font-size: 1.7rem !important;
    }
    .breath-actions {
        flex-direction: column !important;
        gap: 0.6rem !important;
        width: 100% !important;
    }
    .breath-actions .btn {
        width: 100% !important;
        box-sizing: border-box !important;
    }
    
    /* Mobil Tablo ve Tur Çizelgesi Kusursuz Yerleşim */
    .apnea-table-card-header {
        margin-bottom: 0.65rem !important;
    }
    .apnea-table-card-header h3 {
        font-size: 0.95rem !important;
    }
    .apnea-table {
        width: 100% !important;
        table-layout: auto !important;
    }
    .apnea-table th, .apnea-table td {
        padding: 0.35rem 0.25rem !important;
        font-size: 0.75rem !important;
    }
    .apnea-table tr td:first-child {
        width: auto !important;
        white-space: nowrap !important;
        font-size: 0.76rem !important;
        padding-left: 0.4rem !important;
    }
    .apnea-phases-container {
        display: flex !important;
        flex-direction: column !important;
        gap: 0.22rem !important;
        align-items: flex-start !important;
    }
    .apnea-phase-badge {
        padding: 0.18rem 0.5rem !important;
        font-size: 0.67rem !important;
        white-space: nowrap !important;
        border-radius: 12px !important;
        letter-spacing: 0.02em !important;
        box-sizing: border-box !important;
    }
    .apnea-table tr td:last-child {
        font-size: 0.78rem !important;
        padding-right: 0.4rem !important;
        white-space: nowrap !important;
    }
    .apnea-table-footer {
        font-size: 0.76rem !important;
        padding-top: 0.45rem !important;
        gap: 0.5rem !important;
    }

    /* Ağırlık Hesaplama Konsolu */
    .calc-card {
        padding: 1.25rem 1rem !important;
        border-radius: 16px !important;
        box-sizing: border-box !important;
        width: 100% !important;
    }
    .calc-personal-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 0.75rem !important;
        padding: 0.85rem !important;
    }
    .calc-row-2col {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }
    .calc-result-box {
        padding: 1.25rem 1rem !important;
    }
    .calc-main-kg {
        font-size: 2.6rem !important;
    }
    .trim-buoyancy-grid {
        grid-template-columns: 1fr !important;
    }

    /* Havuz Branşları & Serbest Dalış Zaman Çizelgesi */
    .depth-nav-pills {
        flex-wrap: wrap !important;
        gap: 0.4rem !important;
        justify-content: center !important;
    }
    .depth-pill-btn {
        padding: 0.45rem 0.75rem !important;
        font-size: 0.74rem !important;
    }
    .depth-timeline-wrapper {
        padding-left: 3.8rem !important;
        box-sizing: border-box !important;
    }
    .depth-rope-track {
        left: 2.5rem !important;
    }
    .depth-rope-node {
        left: -3.8rem !important;
        width: 2.5rem !important;
        padding-right: 0.4rem !important;
    }
    .node-meter {
        font-size: 0.75rem !important;
    }
    .node-label {
        font-size: 0.42rem !important;
    }
    .depth-card {
        padding: 1.2rem !important;
        border-radius: 14px !important;
        box-sizing: border-box !important;
    }
    .depth-stage-title {
        font-size: 1.25rem !important;
    }
    .depth-metrics-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 0.5rem !important;
    }
    .metric-pill {
        padding: 0.6rem 0.75rem !important;
    }

    /* İpuçları ve Detay Kutuları */
    .info-highlight-box {
        padding: 0.75rem 0.85rem !important;
        font-size: 0.84rem !important;
        box-sizing: border-box !important;
    }

    /* Arama Kutuları (iOS Yakınlaştırma Önleyici min 16px) */
    .spot-search-input,
    .glossary-search-box input {
        font-size: 16px !important;
        padding-top: 0.75rem !important;
        padding-bottom: 0.75rem !important;
        box-sizing: border-box !important;
    }

    /* Tablo ve Yatay Kaydırma Desteği */
    .table-responsive {
        width: 100% !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        margin: 1.2rem 0 !important;
        box-sizing: border-box !important;
    }
    table {
        width: 100% !important;
    }
    table th, table td {
        padding: 0.65rem 0.75rem !important;
        font-size: 0.82rem !important;
    }
}

/* --- 4. DAR EKRANLI TELEFONLAR (<= 420px) --- */
@media (max-width: 420px) {
    .hero-title {
        font-size: 2.8rem !important;
    }
    .level-selector-row {
        grid-template-columns: 1fr !important;
    }
    .calc-personal-grid {
        grid-template-columns: 1fr !important;
    }
    .depth-metrics-grid {
        grid-template-columns: 1fr !important;
    }
    .portal-switch-btn {
        font-size: 0.9rem !important;
        padding: 0.75rem 1.2rem !important;
        width: 100% !important;
        justify-content: center !important;
    }
    .exercise-type-btn,
    .btn-toolbar-link {
        font-size: 0.78rem !important;
        padding: 0.5rem 0.6rem !important;
    }
    .apnea-table-card,
    .breath-circle-wrapper {
        padding: 0.95rem 0.65rem !important;
    }
    .apnea-table th, .apnea-table td {
        padding: 0.3rem 0.2rem !important;
        font-size: 0.72rem !important;
    }
    .apnea-phase-badge {
        font-size: 0.64rem !important;
        padding: 0.15rem 0.45rem !important;
    }
}