/* Modern UI Design for Music Player */
:root {
    --primary-color: #8c52ff;
    --secondary-color: #5e17eb;
    --background-dark: #121212;
    --background-card: #1e1e1e;
    --background-light: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --accent-color: #ff3860;
    --success-color: #20e3b2;
    --radius-small: 8px;
    --radius-medium: 12px;
    --radius-large: 20px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Light Theme */
body.light-theme {
    --background-dark: #f5f5f5;
    --background-card: #ffffff;
    --background-light: #e0e0e0;
    --text-primary: #333333;
    --text-secondary: #666666;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: 240px;
    background: linear-gradient(to bottom, var(--secondary-color), var(--primary-color));
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 10;
    box-shadow: 4px 0 10px rgba(0, 0, 0, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    margin-bottom: 40px;
    color: white;
}

.logo i {
    font-size: 28px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
}

nav ul {
    list-style: none;
}

nav li {
    padding: 14px 10px;
    margin-bottom: 5px;
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

nav li:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

nav li.active {
    background-color: rgba(255, 255, 255, 0.2);
}

nav li i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.theme-toggle {
    margin-top: auto;
    padding: 14px 10px;
    border-radius: var(--radius-medium);
    cursor: pointer;
    display: flex;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.2);
}

.theme-toggle i {
    margin-right: 10px;
}

/* Main Content Area */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 20px;
}

.search-container {
    margin-bottom: 30px;
}

.search-bar {
    background: var(--background-light);
    border-radius: var(--radius-large);
    padding: 5px 20px;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.search-bar.focused {
    box-shadow: 0 4px 20px rgba(140, 82, 255, 0.3);
}

.search-bar i {
    color: var(--text-secondary);
    font-size: 18px;
    margin-right: 10px;
}

#search {
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 15px 0;
    font-size: 16px;
    width: 100%;
    outline: none;
    font-family: 'Poppins', sans-serif;
}

/* Tab Content Styling */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* Player Section */
.now-playing-section {
    background: var(--background-card);
    border-radius: var(--radius-medium);
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

#player {
    width: 100%;
    height: 400px;
    border-radius: var(--radius-medium);
    border: none;
    margin-bottom: 20px;
}

.player-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.player-controls button {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.player-controls button:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
}

#play-btn {
    width: 60px;
    height: 60px;
    font-size: 18px;
}

/* Media Lists */
.media-list {
    list-style: none;
}

.media-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--background-card);
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: var(--radius-medium);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.media-list li:hover {
    background: var(--background-light);
    transform: translateY(-2px);
}

.media-list li .song-info {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
}

.media-list li .song-thumbnail {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-small);
    overflow: hidden;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.media-list li .song-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.media-list li .song-thumbnail i {
    font-size: 24px;
    color: white;
}

.media-list li .song-title {
    font-weight: 500;
}

.media-list li .song-date {
    font-size: 12px;
    color: var(--text-secondary);
}

.media-list li .song-actions {
    display: flex;
    gap: 10px;
}

.media-list li button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
    padding: 5px;
}

.media-list li button:hover {
    color: var(--primary-color);
}

.media-list li .fav-btn {
    color: var(--text-secondary);
}

.media-list li .fav-btn.active {
    color: var(--accent-color);
}

/* Favorites Grid */
.favorites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.favorites-grid li {
    background: var(--background-card);
    border-radius: var(--radius-medium);
    overflow: hidden;
    transition: var(--transition);
    height: 200px;
    position: relative;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.favorites-grid li:hover {
    transform: translateY(-5px);
}

.favorites-grid li .favorite-thumbnail {
    width: 100%;
    height: 140px;
    object-fit: cover;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.favorites-grid li .favorite-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.favorites-grid li .favorite-thumbnail i {
    font-size: 40px;
    color: rgba(255, 255, 255, 0.8);
}

.favorites-grid li .favorite-info {
    padding: 10px;
}

.favorites-grid li .favorite-title {
    font-size: 14px;
    font-weight: 500;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* History Section */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.clear-btn {
    background: rgba(255, 56, 96, 0.1);
    color: var(--accent-color);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-medium);
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.clear-btn:hover {
    background: rgba(255, 56, 96, 0.2);
}

/* Loading & Error States */
.loading,
.error,
.no-results {
    text-align: center;
    padding: 40px 20px;
    border-radius: var(--radius-medium);
    background: var(--background-card);
    margin: 20px 0;
    color: var(--text-secondary);
}

.loading {
    color: var(--primary-color);
}

.error {
    color: var(--accent-color);
}

/* Toast Notification */
#toast-notification {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 12px 24px;
    border-radius: 30px;
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s ease;
}

#toast-notification.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
    .sidebar {
        width: 80px;
    }

    .logo h1,
    nav li span,
    .theme-toggle span {
        display: none;
    }

    .logo i {
        margin-right: 0;
        font-size: 24px;
    }

    nav li {
        display: flex;
        justify-content: center;
        padding: 14px 0;
    }

    nav li i {
        margin-right: 0;
        font-size: 20px;
    }

    .theme-toggle {
        justify-content: center;
    }

    .theme-toggle i {
        margin-right: 0;
    }

    .main-content {
        margin-left: 80px;
    }
}

@media screen and (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: 70px;
        position: fixed;
        bottom: 0;
        top: auto;
        flex-direction: row;
        justify-content: space-around;
        align-items: center;
        padding: 0 20px;
        z-index: 100;
    }

    .logo,
    .theme-toggle {
        display: none;
    }

    nav {
        width: 100%;
    }

    nav ul {
        display: flex;
        justify-content: space-around;
    }

    nav li {
        text-align: center;
        margin-bottom: 0;
    }

    .main-content {
        margin-left: 0;
        padding-bottom: 80px;
    }

    #player {
        height: 250px;
    }

    .favorites-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media screen and (max-width: 480px) {
    .search-bar {
        padding: 5px 15px;
    }

    h2 {
        font-size: 20px;
    }

    .player-controls button {
        width: 40px;
        height: 40px;
    }

    #play-btn {
        width: 50px;
        height: 50px;
    }

    .favorites-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .favorites-grid li {
        height: 160px;
    }

    .favorites-grid li .favorite-thumbnail {
        height: 100px;
    }
}