/* Royal Aquatic Academy - Professional Blue Theme */
:root {
    /* Blue Color Palette - From Navy Deep to Ice Blue */
    --navy-deep: #001242;
    --royal-blue: #1e3a8a;
    --ocean-blue: #2563eb;
    --sky-blue: #3b82f6;
    --light-blue: #60a5fa;
    --pale-blue: #93c5fd;
    --ice-blue: #dbeafe;
    
    /* Complementary Colors */
    --white: #ffffff;
    --light-gray: #f8fafc;
    --medium-gray: #64748b;
    --dark-gray: #334155;
    --accent-gold: #f59e0b;
    
    /* Typography */
    --font-primary: 'Inter', 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', serif;
    
    /* Spacing */
    --container-max-width: 1200px;
    --section-padding: 5rem 0;
    --element-padding: 2rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1rem;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--navy-deep) 0%, var(--royal-blue) 50%, var(--ocean-blue) 100%);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 18, 66, 0.2);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(0, 18, 66, 0.95);
    backdrop-filter: blur(10px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    min-height: 70px;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    line-height: 1.2;
}

.logo::before {
    content: "🏊‍♂️";
    font-size: 2rem;
    line-height: 1;
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    white-space: nowrap;
    line-height: 1;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.nav-link.active {
    background: var(--accent-gold);
    color: var(--navy-deep);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 5px;
    transition: background-color 0.3s ease;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

.mobile-menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--navy-deep) 0%, var(--royal-blue) 30%, var(--ocean-blue) 70%, var(--sky-blue) 100%);
    color: var(--white);
    padding: 8rem 0 6rem;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="%23ffffff"></path></svg>') center bottom;
    background-size: cover;
    opacity: 0.1;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero .subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background: var(--accent-gold);
    color: var(--navy-deep);
}

.btn-primary:hover {
    background: #f97316;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--navy-deep);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    padding: 0 1rem;
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--navy-deep);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Program Cards */
.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.program-card {
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 18, 66, 0.1);
    transition: all 0.3s ease;
    border: 1px solid var(--ice-blue);
    position: relative;
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--ocean-blue), var(--sky-blue));
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 18, 66, 0.15);
}

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

.program-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--navy-deep);
    margin-bottom: 1rem;
}

.program-card p {
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* Level Cards */
.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.level-card {
    background: linear-gradient(135deg, var(--white) 0%, var(--ice-blue) 100%);
    border-radius: 15px;
    padding: 1.5rem;
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
}

.level-card:hover {
    border-color: var(--ocean-blue);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.2);
}

.level-badge {
    display: inline-block;
    background: var(--ocean-blue);
    color: var(--white);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.level-card h4 {
    font-size: 1.3rem;
    color: var(--navy-deep);
    margin-bottom: 0.5rem;
}

.level-card .description {
    color: var(--medium-gray);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.level-card .goals {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

/* Coach Cards */
.coaches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.coach-card {
    background: var(--white);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0, 18, 66, 0.1);
    transition: all 0.3s ease;
}

.coach-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 18, 66, 0.15);
}

.coach-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ocean-blue), var(--sky-blue));
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.coach-card h4 {
    color: var(--navy-deep);
    margin-bottom: 0.5rem;
}

.coach-specialty {
    color: var(--ocean-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--navy-deep) 0%, var(--royal-blue) 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--ice-blue);
}

.footer-section p, 
.footer-section li {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

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

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1rem;
    text-align: center;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--navy-deep);
        flex-direction: column;
        padding: 1rem;
        gap: 0.5rem;
        box-shadow: 0 4px 20px rgba(0, 18, 66, 0.3);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu .nav-link {
        width: 100%;
        text-align: center;
        padding: 1rem;
        border-radius: 8px;
        margin: 0.2rem 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .navbar {
        padding: 0.8rem 0;
        min-height: 60px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .logo::before {
        font-size: 1.8rem;
    }
    
    .hero {
        padding: 6rem 0 4rem;
        margin-top: 60px;
    }
    
    .hero h1 {
        font-size: clamp(2rem, 8vw, 2.8rem);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .programs-grid,
    .levels-grid,
    .coaches-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--ocean-blue); }
.bg-light { background-color: var(--light-gray); }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--pale-blue);
    border-radius: 50%;
    border-top-color: var(--ocean-blue);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}