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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

/* ========================================
   CSS Custom Properties (Variables)
   ======================================== */
:root {
    /* Colors */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-secondary: #8b5cf6;
    --color-accent: #ec4899;
    --color-text-primary: #1f2937;
    --color-text-secondary: #6b7280;
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-dark: #111827;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --color-error: #ef4444;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fs-6xl: 4rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Breakpoints */
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1200px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

h1 { font-size: var(--fs-5xl); }
h2 { font-size: var(--fs-4xl); }
h3 { font-size: var(--fs-3xl); }
h4 { font-size: var(--fs-2xl); }
h5 { font-size: var(--fs-xl); }
h6 { font-size: var(--fs-lg); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

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

a:hover {
    color: var(--color-primary-dark);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-2xl);
    color: var(--color-text-secondary);
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo .logo-link {
    font-size: var(--fs-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    font-family: var(--font-heading);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text-primary);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-sm) 0;
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    gap: 4px;
}

.hamburger {
    width: 25px;
    height: 3px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: white;
    text-align: center;
    overflow: hidden;
}

/* Fallback background image if video is not available */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* Using SVG placeholder - replace with hero-bg.jpg when available */
    background-image: url('../assets/images/hero/hero-bg.svg');
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    z-index: 0;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    z-index: 1;
    object-fit: cover;
}

/* Hide video initially, will be shown if video source is provided */
.hero-video:not([src]),
.hero-video[src=""] {
    display: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4); /* Default opacity, will be overridden by JS */
    z-index: 2;
    transition: background-color 0.3s ease;
}

/* Fallback gradient overlay class (can be added via JS if no video) */
.hero-overlay.no-video {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.8) 0%, rgba(139, 92, 246, 0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: var(--spacing-lg);
}

.hero-title {
    font-size: var(--fs-6xl);
    margin-bottom: var(--spacing-md);
    color: white;
    animation: fadeInUp 1s ease;
}

.hero-tagline {
    font-size: var(--fs-2xl);
    margin-bottom: var(--spacing-2xl);
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    display: block;
    width: 30px;
    height: 30px;
    border-right: 3px solid white;
    border-bottom: 3px solid white;
    transform: rotate(45deg);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--fs-base);
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    min-height: 44px;
    min-width: 44px;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-submit {
    width: 100%;
    margin-top: var(--spacing-md);
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-primary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text {
    padding: var(--spacing-lg);
}

.about-bio {
    font-size: var(--fs-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about-achievements {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.achievement-item {
    text-align: center;
}

.achievement-number {
    display: block;
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--color-primary);
}

.achievement-label {
    display: block;
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.about-image {
    position: relative;
}

.profile-img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

/* ========================================
   Music Section
   ======================================== */
.music {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-secondary);
    min-height: 400px;
}

.music-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    width: 100%;
}

/* Fallback for older browsers */
.music-grid {
    display: block;
}

.music-grid > * {
    display: block;
    width: 100%;
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .music-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
}

.music-card {
    background-color: var(--color-bg-primary, #ffffff);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: block;
    visibility: visible;
    opacity: 1;
}

.music-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.music-card-image {
    width: 100%;
    max-width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    display: block;
}

.music-card-content {
    padding: 0;
    display: block;
}

.music-card-title {
    font-size: var(--fs-xl, 1.5rem);
    margin: 0;
    color: var(--color-text-primary, #1a1a1a);
    font-weight: 700;
    display: block;
}

.music-card-description {
    font-size: var(--fs-base, 1rem);
    color: var(--color-text-secondary, #666);
    margin: 0;
    line-height: 1.6;
    display: block;
}

.music-card-date {
    font-size: var(--fs-sm, 0.875rem);
    color: var(--color-text-secondary, #888);
    margin: 0;
    display: block;
}

.music-card-player {
    margin: 0;
    width: 100%;
    display: block;
}

.music-card-player iframe {
    width: 100% !important;
    max-width: 100%;
    display: block;
}

/* ========================================
   Events Section
   ======================================== */
.events {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-primary);
}

.events-container {
    margin-top: var(--spacing-2xl);
}

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

.event-card {
    background-color: var(--color-bg-secondary);
    border-radius: 12px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.event-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.event-date {
    text-align: center;
    min-width: 100px;
}

.event-day {
    display: block;
    font-size: var(--fs-3xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.event-month {
    display: block;
    font-size: var(--fs-base);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    margin-top: var(--spacing-xs);
}

.event-content {
    flex: 1;
}

.event-title {
    font-size: var(--fs-2xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.event-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--fs-base);
}

.event-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.event-meta-icon {
    font-size: var(--fs-lg);
}

.event-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.event-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.event-status {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: var(--fs-sm);
    font-weight: 600;
    text-transform: uppercase;
}

.event-status.upcoming {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
}

.event-status.past {
    background-color: rgba(107, 114, 128, 0.1);
    color: var(--color-text-secondary);
}

.event-status.cancelled {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.no-events {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-secondary);
}

.no-events h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin: var(--spacing-xl) 0;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    font-size: var(--fs-2xl);
}

.social-media {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
    text-decoration: none;
}

.social-link:hover {
    background-color: var(--color-primary);
    color: white;
    transform: scale(1.1);
}

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

/* ========================================
   Contact Form
   ======================================== */
.contact-form {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 12px;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: var(--fs-base);
    font-family: inherit;
    transition: border-color var(--transition-base);
    background-color: var(--color-bg-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--color-error);
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: 8px;
    display: none;
}

.form-message.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid var(--color-success);
    display: block;
}

.form-message.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    border: 1px solid var(--color-error);
    display: block;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--color-bg-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3,
.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* Focus visible styles */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-md);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}