/* ====================================
   Music Junoo - Main Stylesheet
   Dark Mode + Glassmorphism Design
   ==================================== */

/* ========== CSS Variables ========== */
:root {
    /* Colors - Dark Mode */
    --bg-primary: #121212;
    --bg-secondary: #1E1E1E;
    --bg-tertiary: #2A2A2A;
    --bg-hover: #353535;
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --text-muted: #808080;
    
    /* Accent Colors */
    --accent-primary: #1DB954;
    --accent-hover: #1ED760;
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Borders & Shadows */
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-round: 50%;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --navbar-height: 70px;
    --sidebar-width: 240px;
    --player-height: 90px;
    --bottom-nav-height: 60px;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

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

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ========== App Layout ========== */
.app-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== Navbar ========== */
.navbar {
    position: sticky;
    top: 0;
    height: var(--navbar-height);
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
}

.navbar-container {
    max-width: 100%;
    height: 100%;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--spacing-lg);
}

.navbar-brand a {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-brand i {
    color: var(--accent-primary);
}

.navbar-search {
    display: flex;
    justify-content: center;
    position: relative;
    width: 100%;
}

.search-wrapper {
    position: relative;
    width: 100%;
    max-width: 600px;
}

.search-wrapper i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

#search-input {
    width: 100%;
    padding: 12px 20px 12px 45px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition-normal);
}

#search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.search-results {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: rgba(30, 30, 30, 0.98);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    max-height: 400px;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
}

.search-results.hidden {
    display: none;
}

.search-section {
    padding: var(--spacing-md);
}

.search-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: var(--bg-hover);
}

.search-result-item img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.search-result-info {
    flex: 1;
}

.search-result-title {
    font-weight: 500;
    font-size: 0.95rem;
}

.search-result-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.search-view-all {
    display: block;
    padding: var(--spacing-md);
    text-align: center;
    color: var(--accent-primary);
    font-weight: 500;
    border-top: 1px solid var(--border-color);
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Upload Button */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, #16a34a 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(30, 215, 96, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(30, 215, 96, 0.4);
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(239, 68, 68, 0.3);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1.05rem;
    font-weight: 600;
}

.nav-icon-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    position: relative;
}

.nav-icon-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.notification-badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background: #FF4444;
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    font-weight: 600;
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-round);
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-avatar i {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 220px;
    background: rgba(30, 30, 30, 0.98);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 1000;
}

.user-dropdown.hidden {
    display: none;
}

/* Upload Dropdown */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 200px;
    background: rgba(30, 30, 30, 0.98);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 1000;
}

.dropdown-menu.hidden {
    display: none;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.dropdown-menu a:hover {
    background: var(--bg-secondary);
    padding-left: 25px;
}

.dropdown-menu a i {
    width: 20px;
    text-align: center;
    color: var(--accent-primary);
}

.dropdown-header {
    padding: var(--spacing-md);
    background: var(--bg-secondary);
}

.dropdown-header strong {
    display: block;
    font-size: 1rem;
}

.dropdown-header span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px var(--spacing-md);
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-hover);
}

.dropdown-item i {
    width: 20px;
    color: var(--text-secondary);
}

.admin-link {
    color: var(--accent-primary);
}

.logout-link {
    color: #FF4444;
}

.mobile-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1.2rem;
}

/* ========== Sidebar ========== */
.sidebar {
    position: fixed;
    left: 0;
    top: var(--navbar-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height) - var(--player-height));
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-nav {
    padding: var(--spacing-md) 0;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px var(--spacing-lg);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.sidebar-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-item.active {
    color: var(--text-primary);
}

.sidebar-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent-primary);
}

.sidebar-item i {
    width: 24px;
    font-size: 1.2rem;
}

.sidebar-divider {
    height: 1px;
    background: var(--border-color);
    margin: var(--spacing-md) 0;
}

.sidebar-section {
    padding: 0 var(--spacing-md);
}

.sidebar-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.user-playlists {
    max-height: 300px;
    overflow-y: auto;
}

.playlist-item {
    font-size: 0.9rem;
}

.sidebar-empty {
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========== Main Content ========== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: 0;
    padding: var(--spacing-xl) var(--spacing-lg);
    padding-bottom: calc(var(--player-height) + var(--spacing-xl));
    min-height: calc(100vh - var(--navbar-height));
}

/* ========== Hero Banner ========== */
.hero-banner {
    position: relative;
    background: var(--accent-gradient);
    border-radius: var(--radius-xl);
    padding: 60px 40px;
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: white;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

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

.btn-hero-primary,
.btn-hero-outline {
    padding: 14px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all var(--transition-normal);
}

.btn-hero-primary {
    background: white;
    color: #667eea;
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.btn-hero-outline {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
}

.btn-hero-outline:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: white;
}

.hero-decoration {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 50%;
    opacity: 0.1;
    pointer-events: none;
}

.music-note {
    position: absolute;
    font-size: 4rem;
    color: white;
    animation: float 6s ease-in-out infinite;
}

.note-1 {
    top: 20%;
    right: 20%;
    animation-delay: 0s;
}

.note-2 {
    top: 60%;
    right: 40%;
    animation-delay: 2s;
}

.note-3 {
    top: 40%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ========== Content Sections ========== */
.content-section {
    margin-bottom: 48px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-header i {
    color: var(--accent-primary);
}

.section-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.see-all-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.see-all-link:hover {
    color: var(--accent-primary);
}

/* ========== Playlist Grid ========== */
.playlist-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.playlist-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.playlist-card:hover {
    background: var(--bg-tertiary);
    transform: translateY(-5px);
}

.playlist-cover {
    position: relative;
    display: block;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    border-radius: var(--radius-md);
    aspect-ratio: 1;
}

.playlist-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.playlist-card:hover .playlist-cover img {
    transform: scale(1.05);
}

.playlist-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.playlist-card:hover .playlist-overlay {
    opacity: 1;
}

.btn-play-overlay {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-round);
    background: var(--accent-primary);
    color: white;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.btn-play-overlay:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.playlist-info {
    padding: 0 var(--spacing-sm);
}

.playlist-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.playlist-creator,
.playlist-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

/* ========== Song Table ========== */
.song-table {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.song-table table {
    width: 100%;
    border-collapse: collapse;
}

.song-table thead {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.song-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.song-row {
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.song-row:hover {
    background: var(--bg-hover);
}

.song-row.now-playing {
    background: rgba(30, 215, 96, 0.1);
    border-left: 4px solid var(--accent-primary);
}

.song-row.now-playing .song-title {
    color: var(--accent-primary);
    font-weight: 600;
}

.song-row.now-playing .song-number {
    color: var(--accent-primary);
}

.song-row.now-playing .song-number::before {
    content: '♫';
    display: inline-block;
    animation: pulse-music 1s ease-in-out infinite;
}

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

.song-row td {
    padding: var(--spacing-md);
}

.song-number {
    color: var(--text-secondary);
    font-weight: 500;
    text-align: center;
}

.song-thumbnail img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.song-title {
    font-weight: 500;
    margin-bottom: 4px;
}

.song-artist {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.song-album,
.song-duration,
.song-plays {
    color: var(--text-secondary);
}

.song-actions {
    display: flex;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.song-row:hover .song-actions {
    opacity: 1;
}

.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-round);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1rem;
}

.btn-icon:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-play-song {
    color: var(--accent-primary);
}

.favorite-btn.active i {
    color: #FF4444;
}

/* ========== Horizontal Scroll ========== */
.horizontal-scroll {
    overflow-x: auto;
    margin: 0 calc(-1 * var(--spacing-lg));
    padding: 0 var(--spacing-lg);
}

.horizontal-scroll::-webkit-scrollbar {
    height: 8px;
}

.horizontal-scroll::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

.horizontal-scroll::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

.song-cards {
    display: flex;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
}

.song-card {
    flex: 0 0 180px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.song-card:hover {
    background: var(--bg-tertiary);
    transform: translateY(-5px);
}

.song-card-cover {
    position: relative;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 1;
}

.song-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.song-card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.song-card:hover .song-card-overlay {
    opacity: 1;
}

.song-card-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.song-card-artist {
    font-size: 0.85rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========== Toast Notifications ========== */
.toast {
    position: fixed;
    top: 90px;
    right: 20px;
    min-width: 300px;
    background: rgba(30, 30, 30, 0.98);
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    transform: translateX(400px);
    transition: transform var(--transition-normal);
    z-index: 10000;
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    border-left: 4px solid #4CAF50;
}

.toast-error {
    border-left: 4px solid #FF4444;
}

.toast-info {
    border-left: 4px solid #2196F3;
}

.toast i {
    font-size: 1.25rem;
}

.toast-success i {
    color: #4CAF50;
}

.toast-error i {
    color: #FF4444;
}

.toast-info i {
    color: #2196F3;
}

/* ========== Scroll to Top Button ========== */
.scroll-top-btn {
    position: fixed;
    bottom: calc(var(--player-height) + 20px);
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-round);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 1.2rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    z-index: 500;
}

.scroll-top-btn:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-3px);
}

.scroll-top-btn.hidden {
    opacity: 0;
    pointer-events: none;
}

/* ========== Empty States ========== */
.empty-message {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
    font-size: 1rem;
}

/* ========== Utility Classes ========== */
.hidden {
    display: none !important;
}

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

.text-muted {
    color: var(--text-muted);
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }