/* ========================================
   CORAL REEFS EXPLORER - COMPLETE STYLES
   ======================================== */

/* ===== CSS VARIABLES ===== */
:root {
    /* Day Mode Colors */
    --primary-color: #00CED1;
    --primary-dark: #008B8B;
    --primary-light: #40E0D0;
    --secondary-color: #FF6B6B;
    --accent-color: #FFD93D;
    --ocean-blue: #006994;
    --ocean-light: #0099CC;
    --coral-pink: #FF7F7F;
    --coral-orange: #FF6347;
    --sand-color: #F4E4BC;
    --lagoon-color: #48D1CC;
    
    /* Background Colors */
    --bg-primary: #E0F7FA;
    --bg-secondary: #B2EBF2;
    --bg-card: #FFFFFF;
    --bg-overlay: rgba(0, 105, 148, 0.85);
    
    /* Text Colors */
    --text-primary: #1A1A2E;
    --text-secondary: #4A4A6A;
    --text-light: #FFFFFF;
    --text-muted: #7A7A9A;
    
    /* Gradients */
    --gradient-ocean: linear-gradient(135deg, #006994 0%, #00CED1 50%, #40E0D0 100%);
    --gradient-coral: linear-gradient(135deg, #FF6B6B 0%, #FF8E8E 100%);
    --gradient-sunset: linear-gradient(135deg, #FF6B6B 0%, #FFD93D 100%);
    --gradient-deep: linear-gradient(180deg, #006994 0%, #003366 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(0, 206, 209, 0.5);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-full: 50%;
    
    /* Font Sizes */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-md: 1rem;
    --font-lg: 1.25rem;
    --font-xl: 1.5rem;
    --font-xxl: 2rem;
    --font-hero: 3rem;
    
    /* Z-Index Layers */
    --z-background: -1;
    --z-default: 1;
    --z-card: 10;
    --z-header: 100;
    --z-overlay: 500;
    --z-modal: 1000;
    --z-loading: 9999;
}

/* Night Mode Variables */
body.night-mode {
    --bg-primary: #0A1628;
    --bg-secondary: #1A2744;
    --bg-card: #1E3A5F;
    --bg-overlay: rgba(10, 22, 40, 0.95);
    
    --text-primary: #E0F7FA;
    --text-secondary: #B2EBF2;
    --text-muted: #80DEEA;
    
    --gradient-ocean: linear-gradient(135deg, #0A1628 0%, #1A2744 50%, #006994 100%);
    --gradient-deep: linear-gradient(180deg, #0A1628 0%, #000A14 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(0, 206, 209, 0.3);
}

/* ===== RESET & BASE STYLES ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition-slow), color var(--transition-slow);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 600;
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: var(--text-light);
}

.coral-loader {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-xl);
}

.coral-loader .coral-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    animation: pulse 2s ease-in-out infinite;
}

.coral-loader .bubble {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    animation: bubbleFloat 3s ease-in-out infinite;
}

.coral-loader .bubble:nth-child(1) {
    left: 10px;
    animation-delay: 0s;
}

.coral-loader .bubble:nth-child(2) {
    left: 50px;
    animation-delay: 0.5s;
}

.coral-loader .bubble:nth-child(3) {
    left: 90px;
    animation-delay: 1s;
}

@keyframes bubbleFloat {
    0%, 100% {
        transform: translateY(100px);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(-20px);
        opacity: 0;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
    }
}

.loader-content h2 {
    font-size: var(--font-xl);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 1s ease forwards;
}

.loader-content p {
    font-size: var(--font-md);
    opacity: 0.8;
    animation: fadeInUp 1s ease 0.2s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== HEADER STYLES ===== */
.main-header,
.profile-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-overlay);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: var(--z-header);
    transition: all var(--transition-normal);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.back-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.back-button:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(-5px);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 2rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.logo h1 {
    font-size: var(--font-xl);
    color: var(--text-light);
    font-weight: 600;
}

.reef-title-header {
    text-align: center;
    flex: 1;
}

.reef-title-header h1 {
    font-size: var(--font-xl);
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.location-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 206, 209, 0.3);
    border-radius: var(--radius-lg);
    color: var(--primary-light);
    font-size: var(--font-sm);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.control-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-light);
    font-size: var(--font-lg);
    transition: all var(--transition-normal);
}

.control-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.control-btn.active {
    background: var(--primary-color);
}

/* ===== HERO SECTION ===== */
.hero-section {
    position: relative;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--spacing-xxl)) var(--spacing-xl) var(--spacing-xxl);
    background: var(--gradient-ocean);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.underwater-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    animation: particleFloat 10s linear infinite;
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 12s; }
.particle:nth-child(2) { left: 20%; animation-delay: 1s; animation-duration: 10s; }
.particle:nth-child(3) { left: 30%; animation-delay: 2s; animation-duration: 14s; }
.particle:nth-child(4) { left: 40%; animation-delay: 3s; animation-duration: 11s; }
.particle:nth-child(5) { left: 50%; animation-delay: 4s; animation-duration: 13s; }
.particle:nth-child(6) { left: 60%; animation-delay: 5s; animation-duration: 9s; }
.particle:nth-child(7) { left: 70%; animation-delay: 6s; animation-duration: 15s; }
.particle:nth-child(8) { left: 80%; animation-delay: 7s; animation-duration: 12s; }

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(720deg);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1200px;
    width: 100%;
}

.hero-title {
    font-size: var(--font-hero);
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease forwards;
}

.hero-subtitle {
    font-size: var(--font-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.2s forwards;
    opacity: 0;
    animation-fill-mode: forwards;
}

/* ===== SEARCH & FILTER ===== */
.search-filter-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.4s forwards;
    opacity: 0;
    animation-fill-mode: forwards;
}

.search-box {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.search-box i {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-lg);
}

.search-box input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    padding-left: 50px;
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-xl);
    font-size: var(--font-md);
    color: var(--text-primary);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.clear-btn {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--text-muted);
    border-radius: var(--radius-full);
    color: var(--text-light);
    transition: all var(--transition-fast);
}

.clear-btn:hover {
    background: var(--secondary-color);
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    color: var(--text-light);
    font-size: var(--font-sm);
    font-weight: 500;
    transition: all var(--transition-normal);
}

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.sort-options {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.sort-options label {
    color: var(--text-light);
    font-weight: 500;
}

.sort-options select {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.sort-options select:focus {
    border-color: var(--primary-color);
}

/* ===== STATS BAR ===== */
.stats-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    animation: fadeInUp 1s ease 0.6s forwards;
    opacity: 0;
    animation-fill-mode: forwards;
}

.stat-item {
    text-align: center;
    padding: 0 var(--spacing-lg);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    display: block;
    font-size: var(--font-xxl);
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Poppins', sans-serif;
}

.stat-label {
    font-size: var(--font-sm);
    color: rgba(255, 255, 255, 0.8);
}

/* ===== WORLD MAP SECTION ===== */
.world-map-section {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    margin-bottom: var(--spacing-xl);
}

.map-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.map-header h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-xl);
    color: var(--text-primary);
}

.close-map-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary-color);
    border-radius: var(--radius-full);
    color: var(--text-light);
    transition: all var(--transition-normal);
}

.close-map-btn:hover {
    transform: scale(1.1);
}

.world-map {
    height: 500px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.map-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.map-legend h4 {
    width: 100%;
    font-size: var(--font-md);
    margin-bottom: var(--spacing-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-sm);
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
}

.legend-color.barrier { background: #00CED1; }
.legend-color.fringing { background: #20B2AA; }
.legend-color.atoll { background: #FF6B6B; }
.legend-color.patch { background: #FFD93D; }
.legend-color.current-line {
    width: 30px;
    height: 3px;
    background: linear-gradient(90deg, #4169E1, transparent);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-xl);
    color: var(--text-primary);
}

.title-icon {
    font-size: 1.5em;
}

.results-count {
    color: var(--text-muted);
    font-size: var(--font-sm);
}

/* ===== REEF CARDS GRID ===== */
.reef-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-xl);
    padding: var(--spacing-md);
}

/* ===== CIRCULAR REEF CARD ===== */
.reef-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.reef-card:hover {
    transform: translateY(-10px);
}

.reef-card-image {
    position: relative;
    width: 150px;
    height: 150px;
    margin-bottom: var(--spacing-md);
}

.reef-card-image::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    background: var(--gradient-ocean);
    border-radius: var(--radius-full);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.reef-card:hover .reef-card-image::before {
    opacity: 1;
}

.reef-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
    border: 4px solid var(--bg-card);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.reef-card:hover .reef-card-image img {
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

.reef-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.reef-card:hover .reef-card-overlay {
    opacity: 1;
}

.reef-card-overlay i {
    font-size: var(--font-xxl);
    color: var(--text-light);
    animation: pulse 1s ease-in-out infinite;
}

.reef-type-indicator {
    position: absolute;
    bottom: 5px;
    right: 5px;
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: var(--font-sm);
    border: 2px solid var(--bg-card);
    box-shadow: var(--shadow-sm);
}

.reef-type-indicator.barrier { background: #00CED1; }
.reef-type-indicator.fringing { background: #20B2AA; }
.reef-type-indicator.atoll { background: #FF6B6B; }
.reef-type-indicator.patch { background: #FFD93D; }

.reef-card-info {
    padding: 0 var(--spacing-sm);
}

.reef-card-info h3 {
    font-size: var(--font-md);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

.reef-card-info .reef-location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

.reef-card-info .reef-size {
    font-size: var(--font-xs);
    color: var(--primary-color);
    font-weight: 600;
}

/* Card Animation Delays */
.reef-card:nth-child(1) { animation-delay: 0.05s; }
.reef-card:nth-child(2) { animation-delay: 0.1s; }
.reef-card:nth-child(3) { animation-delay: 0.15s; }
.reef-card:nth-child(4) { animation-delay: 0.2s; }
.reef-card:nth-child(5) { animation-delay: 0.25s; }
.reef-card:nth-child(6) { animation-delay: 0.3s; }
.reef-card:nth-child(7) { animation-delay: 0.35s; }
.reef-card:nth-child(8) { animation-delay: 0.4s; }
.reef-card:nth-child(9) { animation-delay: 0.45s; }
.reef-card:nth-child(10) { animation-delay: 0.5s; }

/* ===== LOAD MORE BUTTON ===== */
.load-more-container {
    text-align: center;
    margin-top: var(--spacing-xxl);
}

.load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xxl);
    background: var(--gradient-ocean);
    border-radius: var(--radius-xl);
    color: var(--text-light);
    font-size: var(--font-md);
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* ===== NO RESULTS ===== */
.no-results {
    text-align: center;
    padding: var(--spacing-xxl);
}

.no-results-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
}

.no-results h3 {
    font-size: var(--font-xl);
    margin-bottom: var(--spacing-sm);
}

.no-results p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.reset-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--primary-color);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    font-weight: 600;
    transition: all var(--transition-normal);
}

.reset-btn:hover {
    background: var(--primary-dark);
}

/* ===== FACTS TICKER ===== */
.facts-ticker {
    background: var(--ocean-blue);
    padding: var(--spacing-md) 0;
    overflow: hidden;
}

.ticker-content {
    display: flex;
    animation: ticker 60s linear infinite;
    white-space: nowrap;
}

.fact-item {
    padding: 0 var(--spacing-xxl);
    color: var(--text-light);
    font-size: var(--font-sm);
}

@keyframes ticker {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* ===== PROFILE PAGE STYLES ===== */
.profile-page {
    background: var(--bg-primary);
}

.reef-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-background);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(0, 105, 148, 0.7) 0%,
        rgba(0, 0, 0, 0.5) 50%,
        rgba(0, 105, 148, 0.8) 100%
    );
}

.profile-main {
    position: relative;
    z-index: var(--z-default);
    padding-top: 100px;
}

/* ===== REEF HERO INFO ===== */
.reef-hero-info {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
}

.hero-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 100%;
}

.reef-image-container {
    position: relative;
    height: 300px;
}

.reef-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
}

.reef-type-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary-color);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    font-size: var(--font-sm);
    font-weight: 600;
}

.reef-quick-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
}

.quick-stat {
    text-align: center;
    padding: var(--spacing-sm);
}

.quick-stat i {
    font-size: var(--font-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.quick-stat .stat-value {
    display: block;
    font-size: var(--font-md);
    font-weight: 700;
    color: var(--text-primary);
}

.quick-stat .stat-label {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

/* ===== DIVE BUTTON ===== */
.dive-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xxl);
    background: var(--gradient-coral);
    border-radius: var(--radius-xl);
    color: var(--text-light);
    font-size: var(--font-lg);
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    animation: pulse 2s ease-in-out infinite;
}

.dive-button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(255, 107, 107, 0.5);
}

.dive-icon {
    position: relative;
    font-size: var(--font-xl);
}

.dive-arrow {
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    font-size: var(--font-sm);
    animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(5px);
    }
}

/* ===== MAP SECTION ===== */
.map-section {
    padding: var(--spacing-xl);
    margin: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-xl);
    color: var(--text-primary);
}

.map-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.map-control-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--font-sm);
    transition: all var(--transition-fast);
}

.map-control-btn:hover,
.map-control-btn.active {
    background: var(--primary-color);
    color: var(--text-light);
}

.map-container {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.reef-map {
    height: 500px;
    border-radius: var(--radius-md);
}

.map-legend-overlay {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-size: var(--font-sm);
}

.map-legend-overlay h4 {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-sm);
}

.map-legend-overlay .legend-item {
    margin-bottom: var(--spacing-xs);
}

/* ===== MIND MAP SECTION ===== */
.mind-map-section {
    padding: var(--spacing-xl);
    margin: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.expand-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-color);
    border-radius: var(--radius-md);
    color: var(--text-light);
    font-size: var(--font-sm);
    transition: all var(--transition-fast);
}

.expand-btn:hover {
    background: var(--primary-dark);
}

.mind-map-container {
    padding: var(--spacing-xl);
}

.mind-map-center {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.center-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-xxl);
    background: var(--gradient-ocean);
    border-radius: var(--radius-xl);
    color: var(--text-light);
    box-shadow: var(--shadow-glow);
}

.center-node .node-icon {
    font-size: 3rem;
}

.center-node span:last-child {
    font-size: var(--font-xl);
    font-weight: 600;
}

.mind-map-branches {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.branch {
    animation: fadeInUp 0.5s ease forwards;
    opacity: 0;
}

.branch:nth-child(1) { animation-delay: 0.1s; }
.branch:nth-child(2) { animation-delay: 0.15s; }
.branch:nth-child(3) { animation-delay: 0.2s; }
.branch:nth-child(4) { animation-delay: 0.25s; }
.branch:nth-child(5) { animation-delay: 0.3s; }
.branch:nth-child(6) { animation-delay: 0.35s; }
.branch:nth-child(7) { animation-delay: 0.4s; }
.branch:nth-child(8) { animation-delay: 0.45s; }
.branch:nth-child(9) { animation-delay: 0.5s; }
.branch:nth-child(10) { animation-delay: 0.55s; }
.branch:nth-child(11) { animation-delay: 0.6s; }
.branch:nth-child(12) { animation-delay: 0.65s; }

.branch-node {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.branch-node:hover {
    box-shadow: var(--shadow-md);
}

.node-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--primary-color);
    color: var(--text-light);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.node-header:hover {
    background: var(--primary-dark);
}

.node-header i:first-child {
    font-size: var(--font-lg);
}

.node-header span {
    flex: 1;
    font-weight: 600;
}

.toggle-icon {
    transition: transform var(--transition-fast);
}

.branch-node.expanded .toggle-icon {
    transform: rotate(180deg);
}

.node-content {
    padding: var(--spacing-md);
    display: none;
}

.branch-node.expanded .node-content {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.info-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 100px;
}

.info-value {
    color: var(--text-primary);
}

/* Threat Node Styles */
.threat-node .node-header {
    background: var(--secondary-color);
}

.threat-node .node-header:hover {
    background: #E55555;
}

.threats-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.threat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(255, 107, 107, 0.1);
    border-radius: var(--radius-sm);
}

.threat-icon {
    font-size: var(--font-xl);
}

.threat-info {
    flex: 1;
}

.threat-name {
    font-weight: 600;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.threat-level {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.level-bar {
    width: 100px;
    height: 8px;
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}

.level-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    border-radius: var(--radius-sm);
}

.threat-level.high .level-bar::after {
    width: 90%;
    background: #FF4444;
}

.threat-level.medium .level-bar::after {
    width: 60%;
    background: #FFB344;
}

.threat-level.low .level-bar::after {
    width: 30%;
    background: #44BB44;
}

.level-text {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

/* Conservation Node Styles */
.conservation-node .node-header {
    background: #28A745;
}

.conservation-node .node-header:hover {
    background: #218838;
}

.protection-status {
    margin-bottom: var(--spacing-md);
}

.status-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, #28A745, #20C997);
    color: var(--text-light);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-sm);
}

.conservation-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.conservation-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(40, 167, 69, 0.1);
    border-radius: var(--radius-sm);
}

.conservation-item i {
    color: #28A745;
    width: 20px;
}

/* Structure Diagram */
.structure-diagram {
    display: flex;
    flex-direction: column;
    gap: 2px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.structure-zone {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-light);
    font-size: var(--font-sm);
}

.structure-zone.lagoon {
    background: #87CEEB;
}

.structure-zone.reef-flat {
    background: #48D1CC;
}

.structure-zone.reef-crest {
    background: #20B2AA;
}

.structure-zone.fore-reef {
    background: #008B8B;
}

.structure-zone.outer-slope {
    background: #006666;
}

.zone-name {
    font-weight: 600;
}

.zone-depth {
    opacity: 0.9;
}

/* Biodiversity Grid */
.biodiversity-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.bio-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.bio-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.bio-count {
    display: block;
    font-size: var(--font-lg);
    font-weight: 700;
    color: var(--primary-color);
}

.bio-label {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

.notable-species h5 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.species-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.species-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-light);
    color: var(--text-light);
    border-radius: var(--radius-sm);
    font-size: var(--font-xs);
}

/* Islands Grid */
.islands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
}

.island-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-sm);
}

.island-item i {
    color: var(--accent-color);
}

/* Conditions Grid */
.conditions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.condition-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.condition-item i {
    font-size: var(--font-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.condition-label {
    font-size: var(--font-xs);
    color: var(--text-muted);
}

.condition-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* Economic Stats */
.economic-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.economic-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-color), #FFC107);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.economic-item i {
    font-size: var(--font-xl);
    margin-bottom: var(--spacing-sm);
}

.economic-label {
    font-size: var(--font-xs);
    opacity: 0.8;
}

.economic-value {
    font-size: var(--font-md);
    font-weight: 700;
}

/* History Timeline */
.history-timeline {
    position: relative;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.history-timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    padding: var(--spacing-sm) 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-xl) + 6px);
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

.timeline-year {
    display: block;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.timeline-event {
    color: var(--text-secondary);
    font-size: var(--font-sm);
}

.scientific-importance {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.scientific-importance h5 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.scientific-importance p {
    color: var(--text-secondary);
    font-size: var(--font-sm);
    line-height: 1.6;
}

/* ===== GALLERY SECTION ===== */
.gallery-section {
    padding: var(--spacing-xl);
    margin: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.gallery-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.gallery-nav-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    color: var(--text-light);
    transition: all var(--transition-fast);
}

.gallery-nav-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
}

.gallery-container {
    overflow: hidden;
    border-radius: var(--radius-md);
}

.gallery-track {
    display: flex;
    gap: var(--spacing-md);
    transition: transform 0.5s ease;
}

.gallery-item {
    flex: 0 0 300px;
    height: 200px;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.gallery-item:hover {
    transform: scale(1.05);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===== RELATED REEFS ===== */
.related-reefs-section {
    padding: var(--spacing-xl);
    margin: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.related-reefs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.related-reef-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.related-reef-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.related-reef-card img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-sm);
    border: 3px solid var(--primary-color);
}

.related-reef-card h4 {
    font-size: var(--font-md);
    margin-bottom: var(--spacing-xs);
}

.related-reef-card p {
    font-size: var(--font-sm);
    color: var(--text-muted);
}

/* ===== DIVE ANIMATION OVERLAY ===== */
.dive-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: var(--z-modal);
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.dive-overlay.active {
    display: block;
    opacity: 1;
}

.dive-container {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.dive-scene {
    width: 100%;
    height: 300%;
    position: absolute;
    top: 0;
    left: 0;
    transition: transform 10s ease-in-out;
}

.dive-overlay.diving .dive-scene {
    transform: translateY(-66.67%);
}

.dive-surface {
    height: 33.33%;
    background: linear-gradient(180deg, #87CEEB 0%, #ADD8E6 50%, #006994 100%);
    position: relative;
}

.sun {
    position: absolute;
    top: 50px;
    right: 100px;
    width: 80px;
    height: 80px;
    background: #FFD700;
    border-radius: var(--radius-full);
    box-shadow: 0 0 60px #FFD700;
}

.clouds {
    position: absolute;
    top: 30px;
    left: 0;
    width: 100%;
}

.cloud {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50px;
    animation: cloudFloat 20s linear infinite;
}

.cloud-1 {
    width: 150px;
    height: 50px;
    left: 10%;
    animation-delay: 0s;
}

.cloud-2 {
    width: 200px;
    height: 60px;
    left: 40%;
    animation-delay: 5s;
}

.cloud-3 {
    width: 120px;
    height: 40px;
    left: 70%;
    animation-delay: 10s;
}

@keyframes cloudFloat {
    0% {
        transform: translateX(-200px);
    }
    100% {
        transform: translateX(calc(100vw + 200px));
    }
}

.dive-water {
    height: 66.67%;
    background: linear-gradient(180deg, 
        #006994 0%,
        #004466 25%,
        #003355 50%,
        #002244 75%,
        #001133 100%
    );
    position: relative;
}

.water-surface {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background: linear-gradient(180deg, rgba(135, 206, 235, 0.5), transparent);
}

.water-depth {
    position: absolute;
    left: 0;
    width: 100%;
    height: 25%;
}

.depth-1 { top: 0; }
.depth-2 { top: 25%; }
.depth-3 { top: 50%; }
.depth-4 { top: 75%; }

.light-rays {
    position: absolute;
    top: 0;
    left: 50%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.1) 0%,
        transparent 100%
    );
    transform: translateX(-50%);
    clip-path: polygon(40% 0%, 60% 0%, 70% 100%, 30% 100%);
}

.fish {
    position: absolute;
    font-size: 2rem;
    animation: fishSwim 8s linear infinite;
}

.fish-1 { top: 20%; animation-delay: 0s; }
.fish-2 { top: 40%; animation-delay: 2s; animation-duration: 10s; }
.fish-3 { top: 60%; animation-delay: 4s; animation-duration: 6s; }
.fish-4 { top: 30%; animation-delay: 1s; }
.fish-5 { top: 70%; animation-delay: 3s; animation-duration: 12s; }

@keyframes fishSwim {
    0% {
        left: -50px;
        transform: scaleX(1);
    }
    49% {
        transform: scaleX(1);
    }
    50% {
        left: calc(100% + 50px);
        transform: scaleX(-1);
    }
    99% {
        transform: scaleX(-1);
    }
    100% {
        left: -50px;
        transform: scaleX(1);
    }
}

.coral-formation {
    position: absolute;
    font-size: 3rem;
    bottom: 0;
}

.formation-1 { left: 20%; }
.formation-2 { left: 70%; }

.coral-cluster {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 4rem;
}

.sea-turtle {
    position: absolute;
    top: 30%;
    font-size: 3rem;
    animation: turtleSwim 15s linear infinite;
}

@keyframes turtleSwim {
    0%, 100% {
        left: 10%;
        transform: translateY(0);
    }
    25% {
        transform: translateY(-20px);
    }
    50% {
        left: 80%;
        transform: translateY(0);
    }
    75% {
        transform: translateY(20px);
    }
}

.jellyfish {
    position: absolute;
    top: 50%;
    right: 20%;
    font-size: 2.5rem;
    animation: jellyfishFloat 5s ease-in-out infinite;
}

@keyframes jellyfishFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}

.reef-floor {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, #8B4513 0%, transparent 50%);
}

.seaweed {
    position: absolute;
    bottom: 0;
    font-size: 3rem;
    animation: seaweedSway 3s ease-in-out infinite;
}

.seaweed-1 { left: 15%; animation-delay: 0s; }
.seaweed-2 { left: 85%; animation-delay: 1s; }

@keyframes seaweedSway {
    0%, 100% {
        transform: rotate(-5deg);
    }
    50% {
        transform: rotate(5deg);
    }
}

.coral-large {
    position: absolute;
    bottom: 0;
    left: 40%;
    font-size: 4rem;
}

.octopus {
    position: absolute;
    bottom: 20%;
    right: 30%;
    font-size: 3rem;
    animation: octopusMove 8s ease-in-out infinite;
}

@keyframes octopusMove {
    0%, 100% {
        transform: translateX(0) translateY(0);
    }
    25% {
        transform: translateX(30px) translateY(-10px);
    }
    50% {
        transform: translateX(0) translateY(-20px);
    }
    75% {
        transform: translateX(-30px) translateY(-10px);
    }
}

.dive-info {
    position: absolute;
    bottom: var(--spacing-xxl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    color: var(--text-light);
    text-align: center;
    z-index: 10;
}

.depth-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.depth-label {
    font-size: var(--font-sm);
    opacity: 0.8;
}

.depth-value {
    font-size: var(--font-xxl);
    font-weight: 700;
    font-family: 'Courier New', monospace;
}

.dive-highlight {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    border-radius: var(--radius-xl);
    animation: pulse 2s ease-in-out infinite;
}

.highlight-icon {
    font-size: var(--font-xl);
}

.highlight-text {
    font-weight: 600;
}

.exit-dive-btn {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    color: var(--text-light);
    font-weight: 600;
    transition: all var(--transition-normal);
    z-index: 10;
}

.exit-dive-btn:hover {
    background: var(--secondary-color);
}

/* ===== MODAL STYLES ===== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--spacing-xl);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 100%;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--primary-color);
    color: var(--text-light);
}

.modal-header h3 {
    font-size: var(--font-lg);
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--text-light);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.modal-body {
    padding: var(--spacing-lg);
}

.share-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.share-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.share-option:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.share-option i {
    font-size: var(--font-xl);
}

.share-option span {
    font-size: var(--font-xs);
}

.share-option[data-platform="facebook"] i { color: #1877F2; }
.share-option[data-platform="twitter"] i { color: #1DA1F2; }
.share-option[data-platform="whatsapp"] i { color: #25D366; }
.share-option[data-platform="email"] i { color: var(--text-secondary); }

.share-link {
    display: flex;
    gap: var(--spacing-sm);
}

.share-link input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-color);
    border-radius: var(--radius-md);
    color: var(--text-light);
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background: var(--primary-dark);
}

/* ===== FOOTER STYLES ===== */
.main-footer,
.profile-footer {
    background: var(--ocean-blue);
    color: var(--text-light);
    padding: var(--spacing-xxl) var(--spacing-xl) var(--spacing-lg);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.footer-section h4 {
    font-size: var(--font-lg);
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-section ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-section a {
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: var(--font-lg);
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    max-width: 1400px;
    margin: var(--spacing-xl) auto 0;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.7;
    font-size: var(--font-sm);
}

.profile-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
}

.profile-footer .footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

/* ===== SCROLL TO TOP ===== */
.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    color: var(--text-light);
    font-size: var(--font-lg);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-card);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .reef-cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}

@media (max-width: 992px) {
    :root {
        --font-hero: 2.5rem;
    }
    
    .header-container {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .logo h1 {
        font-size: var(--font-lg);
    }
    
    .reef-title-header h1 {
        font-size: var(--font-lg);
    }
    
    .mind-map-branches {
        grid-template-columns: 1fr;
    }
    
    .world-map {
        height: 400px;
    }
    
    .reef-map {
        height: 400px;
    }
}

@media (max-width: 768px) {
    :root {
        --font-hero: 2rem;
        --spacing-xl: 1.5rem;
        --spacing-xxl: 2rem;
    }
    
    .main-header,
    .profile-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .back-button span {
        display: none;
    }
    
    .logo h1 {
        font-size: var(--font-md);
    }
    
    .hero-section {
        min-height: 60vh;
    }
    
    .filter-buttons {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-xs);
    }
    
    .filter-btn span {
        display: none;
    }
    
    .stats-bar {
        gap: var(--spacing-md);
    }
    
    .stat-item {
        padding: 0 var(--spacing-sm);
    }
    
    .stat-number {
        font-size: var(--font-xl);
    }
    
    .reef-cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .reef-card-image {
        width: 120px;
        height: 120px;
    }
    
    .reef-quick-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .biodiversity-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .economic-stats {
        grid-template-columns: 1fr;
    }
    
    .gallery-item {
        flex: 0 0 250px;
        height: 180px;
    }
    
    .dive-button {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-md);
    }
    
    .map-section,
    .mind-map-section,
    .gallery-section,
    .related-reefs-section {
        margin: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
    }
    
    .share-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    :root {
        --font-hero: 1.75rem;
    }
    
    .header-controls {
        gap: var(--spacing-xs);
    }
    
    .control-btn {
        width: 36px;
        height: 36px;
    }
    
    .reef-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .reef-card-image {
        width: 100px;
        height: 100px;
    }
    
    .reef-card-info h3 {
        font-size: var(--font-sm);
    }
    
    .center-node {
        padding: var(--spacing-md);
    }
    
    .center-node .node-icon {
        font-size: 2rem;
    }
    
    .center-node span:last-child {
        font-size: var(--font-lg);
    }
    
    .conditions-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .main-header,
    .profile-header,
    .dive-button,
    .scroll-to-top,
    .facts-ticker,
    .dive-overlay,
    .header-controls {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .reef-card {
        break-inside: avoid;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Styles */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --bg-primary: #FFFFFF;
        --bg-secondary: #F0F0F0;
        --text-primary: #000000;
        --text-secondary: #333333;
    }
    
    .reef-card-image img {
        border-width: 3px;
        border-color: #000000;
    }
}