:root {
    /* Deep Ocean Color Palette */
    --primary-deep: #003366;
    --primary-blue: #0066CC;
    --accent-cyan: #00CCFF;
    --accent-coral: #FF7F50;
    --text-primary: #ffffff;
    --text-secondary: #B8E6FF;
    --text-muted: #7FB8E3;
    --bg-dark: #001122;
    --bg-navy: #002244;
    --bg-card: rgba(0, 102, 204, 0.08);
    --border-blue: rgba(0, 204, 255, 0.3);
    --gradient-ocean: linear-gradient(135deg, #001122 0%, #003366 50%, #0066CC 100%);
    --gradient-depth: linear-gradient(180deg, #0066CC 0%, #003366 50%, #001122 100%);
    --shadow-depth: 0 20px 40px rgba(0, 51, 102, 0.3);
    --shadow-light: 0 5px 15px rgba(0, 204, 255, 0.1);
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --bubble-animation: bubble-rise 3s ease-in-out infinite;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 17, 34, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-blue);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 10px var(--accent-cyan));
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: var(--transition-smooth);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: var(--gradient-depth);
    overflow: hidden;
}

.underwater-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

#bubbleCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

.coral-decoration {
    position: absolute;
    font-size: 2rem;
    animation: float 4s ease-in-out infinite;
    opacity: 0.7;
}

.coral-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.coral-2 {
    top: 30%;
    right: 15%;
    animation-delay: 1s;
}

.coral-3 {
    bottom: 30%;
    left: 20%;
    animation-delay: 2s;
}

.coral-4 {
    top: 50%;
    right: 25%;
    animation-delay: 3s;
}

.coral-5 {
    bottom: 20%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    33% {
        transform: translateY(-10px) rotate(2deg);
    }

    66% {
        transform: translateY(5px) rotate(-1deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, #00CCFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 204, 255, 0.3);
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-cyan) 100%);
    color: var(--text-primary);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 204, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--accent-cyan);
}

.btn-secondary:hover {
    background: var(--accent-cyan);
    color: var(--bg-dark);
    transform: translateY(-3px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-blue);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Dive Sites Section */
.dive-sites {
    padding: 8rem 0;
    background: var(--bg-navy);
}

.site-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-blue);
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 0.9rem;
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--accent-cyan);
    color: var(--bg-dark);
    border-color: var(--accent-cyan);
}

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.site-card {
    background: var(--bg-card);
    border: 1px solid var(--border-blue);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-smooth);
    backdrop-filter: blur(10px);
}

.site-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-depth);
}

.site-image {
    position: relative;
    height: 200px;
    background: var(--gradient-ocean);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    opacity: 0.8;
}

.site-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--accent-coral);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.site-difficulty {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

.site-content {
    padding: 2rem;
}

.site-content h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.site-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.site-meta span {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-navy);
    padding: 0.3rem 0.8rem;
    border-radius: 10px;
}

.site-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.site-highlights {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.highlight {
    background: var(--primary-blue);
    color: var(--text-primary);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

/* Courses Section */
.courses {
    padding: 8rem 0;
    background: var(--bg-dark);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border-blue);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
}

.course-card.featured {
    border-color: var(--accent-cyan);
    transform: scale(1.05);
}

.course-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-coral);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.course-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.course-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.course-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.course-duration {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.course-features {
    list-style: none;
    margin-bottom: 2rem;
}

.course-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-blue);
}

.course-features li:last-child {
    border-bottom: none;
}

.btn-course {
    background: var(--primary-blue);
    color: var(--text-primary);
    width: 100%;
}

.btn-course:hover {
    background: var(--accent-cyan);
    transform: translateY(-2px);
}

/* Marine Life Section */
.marine-life {
    padding: 8rem 0;
    background: var(--bg-navy);
}

.marine-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.marine-category {
    background: var(--bg-card);
    border: 1px solid var(--border-blue);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: var(--transition-smooth);
}

.marine-category:hover {
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.marine-category h3 {
    font-family: 'Playfair Display', serif;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.species-list {
    text-align: left;
}

.species-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-blue);
}

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

.species-name {
    color: var(--text-secondary);
    font-weight: 500;
}

.species-location {
    color: var(--text-muted);
    font-size: 0.8rem;
    background: var(--bg-navy);
    padding: 0.2rem 0.8rem;
    border-radius: 10px;
}

/* Packages Section */
.packages {
    padding: 8rem 0;
    background: var(--bg-dark);
}

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

.package-card {
    background: var(--bg-card);
    border: 1px solid var(--border-blue);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.package-card.featured {
    border-color: var(--accent-cyan);
    transform: scale(1.02);
}

.package-card.premium {
    border-color: var(--accent-coral);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(255, 127, 80, 0.05) 100%);
}

.package-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-depth);
}

.package-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-coral);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.package-header {
    background: var(--gradient-ocean);
    padding: 2rem;
    text-align: center;
    position: relative;
}

.package-header h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.package-location {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.package-price {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.duration {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.package-content {
    padding: 2rem;
}

.package-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.package-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
}

.package-highlights {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.btn-package {
    background: var(--primary-blue);
    color: var(--text-primary);
    width: 100%;
}

.btn-package:hover {
    background: var(--accent-cyan);
}

/* Newsletter Section */
.newsletter {
    padding: 4rem 0;
    background: var(--primary-deep);
}

.newsletter-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.newsletter-text h3 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
}

.newsletter-form input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 1px solid var(--border-blue);
    border-radius: 50px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
}

.newsletter-form input::placeholder {
    color: var(--text-muted);
}

.btn-newsletter {
    background: var(--accent-cyan);
    color: var(--bg-dark);
    white-space: nowrap;
}

/* Contact Section */
.contact {
    padding: 8rem 0;
    background: var(--bg-navy);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-methods {
    margin-top: 2rem;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-card);
    border-radius: 15px;
    border: 1px solid var(--border-blue);
}

.method-icon {
    font-size: 2rem;
    min-width: 60px;
    text-align: center;
}

.method-content h4 {
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.method-content p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--border-blue);
}

.contact-form h4 {
    font-family: 'Playfair Display', serif;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    padding: 1rem;
    border: 1px solid var(--border-blue);
    border-radius: 10px;
    background: var(--bg-navy);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
    margin-bottom: 2rem;
    grid-column: 1 / -1;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-section ul li a:hover {
    color: var(--accent-cyan);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    font-size: 1.5rem;
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-blue);
    color: var(--text-muted);
}

.disclaimer {
    font-size: 0.9rem;
    margin-top: 1rem;
    font-style: italic;
}

/* Bubble Animation */
@keyframes bubble-rise {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100px) scale(1);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-dark);
        flex-direction: column;
        gap: 0;
        padding: 2rem;
        transform: translateX(-100%);
        transition: var(--transition-smooth);
        border-top: 1px solid var(--border-blue);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .sites-grid {
        grid-template-columns: 1fr;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .marine-categories {
        grid-template-columns: 1fr;
    }

    .packages-grid {
        grid-template-columns: 1fr;
    }

    .newsletter-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .site-filters {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .filter-btn {
        font-size: 0.8rem;
        padding: 0.6rem 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .stat-item {
        padding: 1rem;
    }

    .package-header {
        padding: 1.5rem;
    }

    .contact-form {
        padding: 1.5rem;
    }
}