/* Dark Theme (Default) - Black & Purple */
:root {
    --primary-color: #a855f7;
    --secondary-color: #ec4899;
    --dark-bg: #000000;
    --card-bg: #0f0f0f;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-gradient: linear-gradient(135deg, #a855f7 0%, #ec4899 100%);
    --border-color: #27272a;
    --hover-bg: #18181b;
    --shadow-color: rgba(168, 85, 247, 0.3);
}

/* Light Theme - White & Pink */
[data-theme="light"] {
    --primary-color: #ec4899;
    --secondary-color: #f472b6;
    --dark-bg: #ffffff;
    --card-bg: #fdf2f8;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --accent-gradient: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
    --border-color: #fce7f3;
    --hover-bg: #fce7f3;
    --shadow-color: rgba(236, 72, 153, 0.2);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 5px 20px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 30px var(--shadow-color);
}

.theme-toggle:active {
    transform: translateY(-1px) scale(0.98);
}

/* Header & Navigation */
header {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    padding: 1.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px var(--shadow-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="light"] header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
    text-shadow: 0 0 30px rgba(255, 0, 102, 0.3);
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    margin-top: 80px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.7) 100%);
    transition: background 0.3s ease;
}

[data-theme="light"] .hero-overlay {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(255, 255, 255, 0.7) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.3) 0%, transparent 70%);
    top: -250px;
    right: -250px;
    animation: pulse 4s ease-in-out infinite;
    z-index: 1;
    transition: background 0.3s ease;
}

.hero::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, transparent 70%);
    bottom: -200px;
    left: -200px;
    animation: pulse 5s ease-in-out infinite;
    z-index: 1;
    transition: background 0.3s ease;
}

[data-theme="light"] .hero::before {
    background: radial-gradient(circle, rgba(236, 72, 153, 0.2) 0%, transparent 70%);
}

[data-theme="light"] .hero::after {
    background: radial-gradient(circle, rgba(244, 114, 182, 0.15) 0%, transparent 70%);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

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

.hero h1 {
    font-size: 5rem;
    margin-bottom: 1rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
    text-shadow: 0 0 50px rgba(255, 0, 102, 0.5);
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-subtitle {
    font-size: 1.1rem !important;
    color: var(--text-secondary) !important;
    margin-bottom: 2rem !important;
    animation: fadeInUp 1s ease 0.3s backwards !important;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.cta-button {
    display: inline-block;
    padding: 1rem 3rem;
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 5px 20px var(--shadow-color);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.cta-button-secondary {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

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

/* Featured Section */
.featured {
    padding: 5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Music Library */
.music-library {
    padding: 5rem 2rem;
    max-width: 1600px;
    margin: 0 auto;
    margin-top: 80px;
}

/* Filter Controls Container */
.filter-controls {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.search-sort-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-bar {
    flex: 1;
    min-width: 300px;
    position: relative;
}

.search-bar input {
    width: 100%;
    padding: 1rem 1.5rem 1rem 3rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-bar input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px var(--shadow-color);
}

.search-bar::before {
    content: '🔍';
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
}

.sort-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sort-container label {
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.sort-select {
    padding: 1rem 1.5rem;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    cursor: pointer;
    transition: border-color 0.3s ease;
    min-width: 200px;
}

.sort-select:hover {
    border-color: var(--primary-color);
}

.filter-section {
    margin-bottom: 1.5rem;
}

.filter-section:last-child {
    margin-bottom: 0;
}

.filter-label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-label::before {
    content: '';
    width: 4px;
    height: 20px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.filters {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    background: var(--dark-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.filter-btn.active {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
    box-shadow: 0 5px 15px var(--shadow-color);
}

.filter-btn.active::before {
    left: 0;
}

.clear-filters-btn {
    padding: 0.7rem 1.5rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    margin-top: 1rem;
}

.clear-filters-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.results-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem 1.5rem;
    background: var(--card-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.results-count {
    color: var(--text-secondary);
    font-size: 1rem;
}

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

.active-filter-tag {
    padding: 0.4rem 1rem;
    background: rgba(255, 0, 102, 0.2);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.active-filter-tag .remove {
    cursor: pointer;
    font-weight: bold;
}

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

.music-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
    position: relative;
}

.music-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px var(--shadow-color);
    border-color: var(--primary-color);
}

.music-artwork {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.music-artwork::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 0, 102, 0.3) 0%, rgba(0, 255, 255, 0.3) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.music-card:hover .music-artwork::before {
    opacity: 1;
}

.release-date {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.music-info {
    padding: 1.5rem;
}

.music-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.music-artist {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.music-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.music-genre, .music-mood {
    display: inline-block;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.music-genre {
    background: rgba(255, 0, 102, 0.2);
    color: var(--primary-color);
}

.music-mood {
    background: rgba(0, 255, 255, 0.2);
    color: var(--secondary-color);
}

.download-btn {
    width: 100%;
    padding: 0.9rem;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-color);
}

/* Footer */
footer {
    background: var(--card-bg);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 5rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.social-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: scale(1.2);
}

/* No Results */
#noResults {
    text-align: center;
    padding: 4rem;
    color: var(--text-secondary);
}

#noResults .icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Loading Animation */
.loading {
    display: none;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading.active {
    display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .music-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .music-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .search-sort-container {
        flex-direction: column;
    }
    
    .sort-container {
        width: 100%;
    }
    
    .sort-select {
        width: 100%;
    }
    
    .results-info {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}

/* Video Container */
.video-container {
    max-width: 900px;
    margin: 0 auto;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

/* Donation Section */
.donation-container {
    max-width: 1200px;
    margin: 0 auto;
}

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

.donation-card {
    background: var(--card-bg);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.donation-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-color);
    border-color: var(--primary-color);
}

.donation-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.donation-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.donation-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.donation-btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.donation-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-color);
}

/* Performance Optimizations */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem !important;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        max-width: 300px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .filter-controls {
        padding: 1.5rem;
    }
    
    .music-grid {
        grid-template-columns: 1fr;
    }
    
    .donation-options {
        grid-template-columns: 1fr;
    }
}