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

:root {
    --primary: #8b5cf6;
    --secondary: rgba(139, 92, 246, 0.1);
    --dark: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --light: #ffffff;
    --gray: #a78bfa;
    --border: rgba(139, 92, 246, 0.2);
    --glass: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(139, 92, 246, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.6;
    min-height: 100vh;
    backdrop-filter: blur(10px);
}

body.light {
    --primary: #8b5cf6;
    --secondary: rgba(139, 92, 246, 0.1);
    --dark: #ffffff;
    --light: #1e293b;
    --gray: #64748b;
    --border: rgba(139, 92, 246, 0.2);
    --glass: rgba(139, 92, 246, 0.05);
    --shadow: 0 4px 20px rgba(139, 92, 246, 0.15);
}

body.dark {
    --primary: #8b5cf6;
    --secondary: rgba(139, 92, 246, 0.1);
    --dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
    --light: #ffffff;
    --gray: #a78bfa;
    --border: rgba(139, 92, 246, 0.3);
    --glass: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(139, 92, 246, 0.3);
}

.navbar {
    background: var(--glass);
    backdrop-filter: blur(20px);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
}

.nav-brand a {
    color: var(--primary);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-search {
    flex: 1;
    max-width: 400px;
    margin: 0 2rem;
}

.nav-search form {
    display: flex;
    background: var(--dark);
    border-radius: 25px;
    overflow: hidden;
}

.nav-search input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    color: var(--light);
}

.nav-search button {
    padding: 0.75rem 1rem;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
}

.nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-links a, .nav-links button {
    color: var(--light);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    transition: background 0.3s;
    border: none;
    background: transparent;
    cursor: pointer;
}

.nav-links a:hover, .nav-links button:hover {
    background: var(--border);
}

main {
    padding: 2rem;
    margin-bottom: 140px;
}

.song-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.song-card {
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.song-card h3, .song-card p {
    color: var(--light);
}

.song-card p {
    color: var(--gray);
}

.song-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 40px rgba(139, 92, 246, 0.4);
}

.song-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.song-card h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.song-card p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.song-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.play-btn, .like-btn, .add-playlist-btn {
    background: var(--primary);
    border: none;
    color: white;
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s;
}

.play-btn:hover, .like-btn:hover, .add-playlist-btn:hover {
    background: #1ed760;
}

.plays {
    color: var(--gray);
    font-size: 0.8rem;
    margin-left: auto;
}

.song-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.song-item {
    display: flex;
    align-items: center;
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border);
    padding: 1rem;
    border-radius: 16px;
    gap: 1rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.song-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
}

.song-item h3, .song-item h4 {
    color: var(--light);
}

.song-item p {
    color: var(--gray);
}

.song-item .rank {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
    min-width: 30px;
}

.song-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 4px;
}

.song-info {
    flex: 1;
}

.song-info h3, .song-info h4 {
    margin-bottom: 0.25rem;
}

.song-info p {
    color: var(--gray);
    font-size: 0.9rem;
}

.genre {
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.8rem;
}

.song-stats {
    color: var(--gray);
}

.plays {
    color: var(--gray);
}

.song-stats {
    display: flex;
    gap: 1rem;
    color: var(--gray);
    font-size: 0.9rem;
}

.player {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--glass);
    backdrop-filter: blur(25px);
    border-top: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    z-index: 1000;
    box-shadow: 0 -4px 20px rgba(139, 92, 246, 0.3);
}

.player.hidden {
    display: none !important;
}

.player-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 200px;
}

.player-info img {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 4px;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.player-controls button {
    background: none;
    border: none;
    color: var(--light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.3s;
}

.player-controls button:hover {
    background: var(--border);
}

.player-progress {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    cursor: pointer;
}

.progress {
    height: 100%;
    background: var(--primary);
    border-radius: 2px;
    width: 0%;
}

.player-volume {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.player-volume input {
    width: 100px;
}

.player-close {
    display: flex;
    align-items: center;
}

.player-close button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border);
    color: var(--light);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1000;
}

.player-close button:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    color: #ef4444;
    transform: scale(1.1);
}

.player-close button:active {
    transform: scale(0.95);
}

.player-close button i {
    pointer-events: none;
}

.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-form {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 20px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow);
}

.auth-form h2 {
    color: var(--light);
}

.auth-form label {
    color: var(--light);
}

.auth-form p {
    color: var(--gray);
}

.auth-form a {
    color: var(--primary);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--light);
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--light);
}

.form-group input::placeholder {
    color: var(--gray);
}

body.light .form-group input, 
body.light .form-group select, 
body.light .form-group textarea {
    background: #ffffff;
    color: #1e293b;
    border: 1px solid #e2e8f0;
}

body.light .form-group input::placeholder {
    color: #64748b;
}

body.dark .form-group select {
    background: rgba(255, 255, 255, 0.1);
    color: var(--light);
    border: 1px solid var(--border);
}

body.dark .form-group select option {
    background: #1e1b4b;
    color: #ffffff;
}

.upload-page {
    color: var(--light);
}

.upload-page h2 {
    color: var(--light);
}

.upload-form {
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.upload-form .form-group label {
    color: var(--light);
    font-weight: 500;
}

.upload-form .success {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.upload-form .error {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: #1ed760;
}

.error {
    background: #e74c3c;
    color: white;
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.success {
    background: var(--primary);
    color: white;
    padding: 0.75rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.hidden {
    display: none !important;
}

#loading {
    text-align: center;
    padding: 2rem;
    color: var(--gray);
    font-size: 1.1rem;
}

#loading:not(.hidden) {
    display: block;
}

.playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.playlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.playlist-card {
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
}

.playlist-card h3 {
    color: var(--light);
}

.playlist-card p {
    color: var(--gray);
}

.playlist-cover {
    width: 80px;
    height: 80px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--glass);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--shadow);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.user-type {
    color: var(--primary);
    font-weight: bold;
    text-transform: uppercase;
}

section {
    margin-bottom: 3rem;
}

section h2, section h3 {
    margin-bottom: 1rem;
    color: var(--light);
}

.trending-page h2 {
    color: var(--light);
}

.search-page h2 {
    color: var(--light);
}

.search-page p {
    color: var(--gray);
}

.upload-page h2 {
    color: var(--light);
}

.playlist-page h2 {
    color: var(--light);
}

.profile-page h2, .profile-page h3, .profile-page h4 {
    color: var(--light);
}

.profile-page p {
    color: var(--gray);
}

@media (max-width: 768px) {
    .navbar {
        flex-wrap: wrap;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-brand {
        order: 1;
        flex: 1;
    }
    
    .nav-search {
        order: 3;
        width: 100%;
        margin: 0;
    }
    
    .nav-links {
        order: 2;
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
    }
    
    .nav-links a {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    main {
        padding: 1rem;
        margin-bottom: 120px;
    }
    
    .song-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 1rem;
    }
    
    .song-card {
        padding: 0.75rem;
    }
    
    .song-card img {
        height: 120px;
    }
    
    .song-list {
        gap: 0.75rem;
    }
    
    .song-item {
        padding: 0.75rem;
        gap: 0.75rem;
    }
    
    .song-item img {
        width: 50px;
        height: 50px;
    }
    
    .player {
        flex-direction: column;
        gap: 0.75rem;
        padding: 1rem;
        height: auto;
    }
    
    main {
        margin-bottom: 180px;
    }
    
    .player-info {
        order: 1;
        min-width: auto;
        justify-content: center;
    }
    
    .player-controls {
        order: 2;
        justify-content: center;
    }
    
    .player-progress {
        order: 3;
        width: 100%;
    }
    
    .player-volume {
        order: 4;
        justify-content: center;
    }
    
    .auth-form {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .upload-form {
        padding: 1rem;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .playlist-grid {
        grid-template-columns: 1fr;
    }
}