/* Custom styles for OverDrive website */

/* Base Styles and Variables */
:root {
    /* Primary Colors */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    
    /* Accent Colors */
    --accent: #f43f5e;
    --accent-dark: #e11d48;
    --accent-light: #fb7185;
    
    /* Text Colors */
    --text-light: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dark: #1f2937;
    
    /* Background Colors */
    --bg-dark: #000000;
    --bg-darker: #111111;
    --bg-light: #ffffff;
    
    /* Overlay Colors */
    --bg-overlay: rgba(0, 0, 0, 0.7);
    --bg-overlay-light: rgba(255, 255, 255, 0.05);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--primary-dark));
    --gradient-accent: linear-gradient(135deg, var(--accent), var(--accent-dark));
    --gradient-blue: linear-gradient(135deg, #60a5fa, #3b82f6);
    --gradient-purple: linear-gradient(135deg, #a855f7, #7c3aed);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-primary: 0 4px 12px rgba(59, 130, 246, 0.3);
    --shadow-accent: 0 4px 12px rgba(244, 63, 94, 0.3);
    
    /* Transitions */
    --transition-speed: 0.3s;
    --transition-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
}

/* Enhanced Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--bg-darker);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    color: var(--text-muted);
    margin-bottom: 2rem;
}

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

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6) contrast(1.1);
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent, var(--bg-dark));
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* Enhanced Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.2rem 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-speed) ease;
}

.site-header.scrolled {
    padding: 0.8rem 0;
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-light);
    text-decoration: none;
    transition: all var(--transition-speed) var(--transition-bounce);
}

.site-logo:hover {
    color: var(--primary);
    transform: scale(1.05);
}

/* Enhanced Navigation */
.nav-link {
    position: relative;
    padding: 0.5rem 1.2rem;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
}

.nav-link:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    transition: width var(--transition-speed) var(--transition-bounce);
}

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

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

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

/* Enhanced Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed) var(--transition-bounce);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%) rotate(45deg);
    transition: transform var(--transition-speed) ease;
}

.btn:hover::before {
    transform: translateX(100%) rotate(45deg);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-accent {
    background: var(--gradient-accent);
    color: var(--text-light);
    box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(244, 63, 94, 0.4);
}

/* Enhanced Cards */
.card {
    background: var(--bg-overlay-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.card:hover::before {
    transform: translateX(100%);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    border-color: var(--primary);
    background: linear-gradient(to bottom right, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
}

/* Enhanced Section Headers */
.section-header {
    position: relative;
    margin-bottom: 4rem;
    text-align: center;
    color: var(--text-light);
}

.section-header::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

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

.animate-float {
    animation: float 3s ease-in-out infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Enhanced Image Effects */
.img-hover {
    transition: all var(--transition-speed) ease;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.img-hover:hover {
    filter: brightness(1.1) contrast(1.1);
    transform: scale(1.02) rotate(1deg);
    box-shadow: var(--shadow-lg);
}

/* Enhanced Focus Styles */
:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
    transition: box-shadow var(--transition-speed) ease;
}

/* Enhanced Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-accent);
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-header {
        padding: 0.8rem 0;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .nav-link {
        padding: 0.4rem 0.8rem;
    }
    
    .card {
        padding: 1.5rem;
    }
}

/* Dark Mode Optimization */
@media (prefers-color-scheme: dark) {
    :root {
        --shadow-primary: 0 4px 12px rgba(59, 130, 246, 0.4);
        --shadow-accent: 0 4px 12px rgba(244, 63, 94, 0.4);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}