/* ========================================
   CSS Reset & Base Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   CSS Variables - Light Theme (Default)
   ======================================== */

:root {
    /* Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f2f5;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    --accent: #0066cc;
    --accent-hover: #0052a3;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.12);
    --overlay: rgba(0, 0, 0, 0.5);
    --alert-bg: #fff3cd;
    --alert-border: #ffc107;
    --alert-text: #856404;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --line-height: 1.6;

    /* Layout */
    --container-width: 1200px;
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;

    /* Transitions */
    --transition: 0.3s ease;
}

/* ========================================
   Dark Theme
   ======================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --bg-tertiary: #3a3a3a;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
        --text-tertiary: #6c757d;
        --accent: #4d94ff;
        --accent-hover: #6da3ff;
        --border: #404040;
        --shadow: rgba(0, 0, 0, 0.3);
        --shadow-hover: rgba(0, 0, 0, 0.4);
        --overlay: rgba(0, 0, 0, 0.7);
        --alert-bg: #3d3420;
        --alert-border: #9a7e2e;
        --alert-text: #ffc107;
    }
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --text-tertiary: #6c757d;
    --accent: #4d94ff;
    --accent-hover: #6da3ff;
    --border: #404040;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-hover: rgba(0, 0, 0, 0.4);
    --overlay: rgba(0, 0, 0, 0.7);
    --alert-bg: #3d3420;
    --alert-border: #9a7e2e;
    --alert-text: #ffc107;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f0f2f5;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-tertiary: #adb5bd;
    --accent: #0066cc;
    --accent-hover: #0052a3;
    --border: #e0e0e0;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.12);
    --overlay: rgba(0, 0, 0, 0.5);
    --alert-bg: #fff3cd;
    --alert-border: #ffc107;
    --alert-text: #856404;
}

/* ========================================
   Base Typography
   ======================================== */

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition), color var(--transition);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--accent-hover);
}

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

/* ========================================
   Layout Utilities
   ======================================== */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Header & Navigation
   ======================================== */

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 8px var(--shadow);
    transition: background-color var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--spacing-md);
}

.logo img {
    display: block;
    height: 40px;
    width: auto;
}

.desktop-nav {
    display: none;
    align-items: center;
    gap: var(--spacing-lg);
    margin-right: auto;
    margin-left: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition);
    white-space: nowrap;
}

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

.nav-link.active {
    color: var(--accent);
}

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border: none;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition);
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
}

.theme-icon {
    width: 24px;
    height: 24px;
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    width: 44px;
    height: 44px;
    border: none;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hamburger {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: background-color var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform var(--transition);
}

.hamburger::before {
    transform: translateY(-8px);
}

.hamburger::after {
    transform: translateY(8px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
}

.mobile-nav.active {
    max-height: 400px;
}

.mobile-nav-link {
    padding: var(--spacing-md);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    transition: background-color var(--transition);
}

.mobile-nav-link:hover {
    background-color: var(--bg-tertiary);
}

.mobile-nav-link.active {
    color: var(--accent);
    font-weight: 600;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-image: url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    filter: blur(8px);
    transform: scale(1.1);
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.3) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    padding: var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.hero-buttons-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    min-height: 44px;
    font-size: var(--font-size-base);
    font-weight: 500;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: white;
    color: var(--accent);
}

.btn-primary:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: var(--font-size-lg);
}

/* ========================================
   Sections
   ======================================== */

section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

/* ========================================
   Rules Section
   ======================================== */

.rules {
    background-color: var(--bg-secondary);
    padding: var(--spacing-2xl) 0;
}

.rules-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    max-width: 700px;
    margin: 0 auto;
}

.rule-card {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 16px var(--shadow);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
    border: 2px solid var(--accent);
}

.rule-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 28px var(--shadow-hover);
    border-color: var(--accent-hover);
}

.rule-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent) 0%, #004999 100%);
    border-radius: 50%;
    color: white;
}

.rule-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.rule-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ========================================
   Booking Section
   ======================================== */

.booking {
    background-color: var(--bg-primary);
}

.booking-card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 4px 16px var(--shadow);
}

.booking-frame {
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: var(--bg-primary);
}

.booking-frame iframe {
    width: 100%;
    height: 700px;
    border: none;
    display: block;
}

/* ========================================
   Instructions Section
   ======================================== */

.instructions {
    background-color: var(--bg-secondary);
    text-align: center;
}

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

.instructions .btn-primary {
    background-color: var(--accent);
    color: white;
}

.instructions .btn-primary:hover {
    background-color: var(--accent-hover);
}

/* ========================================
   Gallery Section
   ======================================== */

.gallery {
    background-color: var(--bg-primary);
}

.gallery-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: 1fr;
}

.gallery-item {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 16px var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--shadow-hover);
}

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

/* ========================================
   Footer
   ======================================== */

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-text {
    color: var(--text-secondary);
    margin: 0;
}

/* ========================================
   Responsive Design - Tablet
   ======================================== */

@media (min-width: 768px) {
    :root {
        --font-size-3xl: 2.5rem;
        --font-size-4xl: 3rem;
        --spacing-xl: 4rem;
        --spacing-2xl: 5rem;
        --spacing-3xl: 8rem;
    }

    .desktop-nav {
        display: flex;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .hero {
        min-height: 600px;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-buttons {
        flex-direction: row;
        max-width: 100%;
        justify-content: center;
    }

    .hero-buttons-row {
        display: flex;
        grid-template-columns: unset;
    }

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

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

    .gallery-item-wide {
        grid-column: span 2;
    }
}

/* ========================================
   Responsive Design - Desktop
   ======================================== */

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }

    .hero {
        min-height: 700px;
    }

    .booking-card {
        padding: var(--spacing-2xl);
    }
}

/* ========================================
   Accessibility & Print
   ======================================== */

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

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media print {
    .header,
    .footer,
    .theme-toggle,
    .mobile-menu-toggle {
        display: none;
    }
}

/* ========================================
   SPA Page Management
   ======================================== */

.page-content {
    display: none;
}

.page-content.active {
    display: block;
}