:root[data-theme="monochrome"] {
    --background: #000;
    --foreground: #fafafa;
    --card: #111;
    --card-foreground: #fafafa;
    --primary: #fafafa;
    --primary-foreground: #111;
    --secondary: #27272a;
    --secondary-foreground: #fafafa;
    --muted: #27272a;
    --muted-foreground: #a1a1aa;
    --border: #27272a;
    --input: #27272a;
    --ring: #fafafa;
    --radius: .5rem;
    --highlight: #ffffff;
    --active-highlight: var(--highlight);
    --explicit-badge: #fafafa;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

:root[data-theme="dark"] {
    --background: #0a0a0a;
    --foreground: #ededed;
    --card: #1a1a1a;
    --card-foreground: #ededed;
    --primary: #3b82f6;
    --primary-foreground: #ffffff;
    --secondary: #2a2a2a;
    --secondary-foreground: #ededed;
    --muted: #2a2a2a;
    --muted-foreground: #a0a0a0;
    --border: #2a2a2a;
    --input: #2a2a2a;
    --ring: #3b82f6;
    --radius: .5rem;
    --highlight: #3b82f6;
    --active-highlight: #3b82f6;
    --explicit-badge: #ef4444;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

:root[data-theme="ocean"] {
    --background: #0c1821;
    --foreground: #e0f4ff;
    --card: #1b2838;
    --card-foreground: #e0f4ff;
    --primary: #06b6d4;
    --primary-foreground: #0c1821;
    --secondary: #1e3a52;
    --secondary-foreground: #e0f4ff;
    --muted: #1e3a52;
    --muted-foreground: #94c5e0;
    --border: #1e3a52;
    --input: #1e3a52;
    --ring: #06b6d4;
    --radius: .5rem;
    --highlight: #06b6d4;
    --active-highlight: #06b6d4;
    --explicit-badge: #f43f5e;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

:root[data-theme="purple"] {
    --background: #0f0514;
    --foreground: #f3e8ff;
    --card: #1e0a2e;
    --card-foreground: #f3e8ff;
    --primary: #a855f7;
    --primary-foreground: #ffffff;
    --secondary: #2d1545;
    --secondary-foreground: #f3e8ff;
    --muted: #2d1545;
    --muted-foreground: #c4b5fd;
    --border: #2d1545;
    --input: #2d1545;
    --ring: #a855f7;
    --radius: .5rem;
    --highlight: #a855f7;
    --active-highlight: #a855f7;
    --explicit-badge: #ec4899;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

:root[data-theme="forest"] {
    --background: #0a1409;
    --foreground: #e8f5e9;
    --card: #1a2e1a;
    --card-foreground: #e8f5e9;
    --primary: #22c55e;
    --primary-foreground: #0a1409;
    --secondary: #2d4a2d;
    --secondary-foreground: #e8f5e9;
    --muted: #2d4a2d;
    --muted-foreground: #86efac;
    --border: #2d4a2d;
    --input: #2d4a2d;
    --ring: #22c55e;
    --radius: .5rem;
    --highlight: #22c55e;
    --active-highlight: #22c55e;
    --explicit-badge: #f59e0b;
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--background);
    color: var(--foreground);
    font-family: 'Inter', sans-serif;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

img {
    max-width: 100%;
    display: block;
    background-color: var(--muted);
    color: transparent;
    font-size: 0;
    border: none;
}

a {
    color: inherit;
    text-decoration: none;
}

.app-container {
    display: grid;
    height: 100vh;
    grid-template-columns: 280px 1fr;
    grid-template-rows: 1fr auto;
    grid-template-areas: 
        "sidebar main" 
        "player player";
}

.sidebar {
    grid-area: sidebar;
    background-color: var(--background);
    border-right: 1px solid var(--border);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transition: transform .3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2000;
}

.main-content {
    grid-area: main;
    overflow-y: auto;
    padding: var(--spacing-xl);
    scroll-behavior: smooth;
}

.now-playing-bar {
    grid-area: player;
    background-color: #050505;
    border-top: 1px solid var(--border);
    padding: var(--spacing-md) var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    align-items: center;
    gap: var(--spacing-xl);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.sidebar-logo svg {
    width: 15px;
    height: 15px;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav .nav-item a {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem;
    border-radius: var(--radius);
    color: var(--muted-foreground);
    text-decoration: none;
    font-weight: 500;
    transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.sidebar-nav .nav-item a:hover {
    background-color: var(--secondary);
    color: var(--foreground);
}

.sidebar-nav .nav-item a.active {
    background-color: var(--primary);
    color: var(--primary-foreground);
}

.sidebar-nav .nav-item a svg {
    width: 20px;
    height: 20px;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn .25s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from { 
        opacity: 0;
        transform: translateY(4px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-md);
}

.hamburger-menu {
    display: none;
    background: transparent;
    border: none;
    color: var(--foreground);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: background-color .2s;
}

.hamburger-menu:hover {
    background-color: var(--secondary);
}

.search-bar {
    position: relative;
    width: 100%;
    max-width: 400px;
}

.search-bar svg {
    position: absolute;
    left: .75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted-foreground);
    width: 20px;
    height: 20px;
    pointer-events: none;
}

.search-bar input {
    width: 100%;
    padding: .75rem .75rem .75rem 2.5rem;
    background-color: var(--input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--foreground);
    font-size: 1rem;
    transition: border-color .2s;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--ring);
}

.content-section {
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.search-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.search-tab {
    background: transparent;
    border: none;
    color: var(--muted-foreground);
    padding: var(--spacing-sm) var(--spacing-lg);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-tab:hover {
    color: var(--foreground);
}

.search-tab.active {
    color: var(--foreground);
    border-bottom-color: var(--highlight);
}

.search-tab-content {
    display: none;
}

.search-tab-content.active {
    display: block;
    animation: fadeIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    display: block;
    background-color: var(--card);
    border-radius: var(--radius);
    padding: 1rem;
    transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    background-color: var(--secondary);
    transform: translateY(-2px);
}

.card-image-wrapper {
    position: relative;
    width: 100%;
    margin-bottom: 1rem;
}

.card-image {
    width: 100%;
    aspect-ratio: 1/1;
    background-color: var(--muted);
    border-radius: calc(var(--radius) - 4px);
    object-fit: cover;
}

.card.artist .card-image {
    border-radius: 50%;
}

.card-image-wrapper .explicit-badge {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

.card-title {
    font-weight: 600;
    margin-bottom: .25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-subtitle {
    font-size: .9rem;
    color: var(--muted-foreground);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.explicit-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--explicit-badge);
    color: rgb(0, 0, 0);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 0.15rem 0.35rem;
    border-radius: 2px;
    margin-left: 0.5rem;
    vertical-align: middle;
    line-height: 1;
}

.track-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.track-list .track-list-header {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-sm);
    color: var(--muted-foreground);
    font-size: .9rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--spacing-xs);
}

.track-list .track-list-header .duration-header {
    justify-self: flex-end;
}

.track-item {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.track-item:hover {
    background-color: var(--secondary);
}

.track-item .track-number {
    color: var(--muted-foreground);
    text-align: center;
    font-size: .9rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.track-item-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 0;
}

.track-item-cover {
    width: 40px;
    height: 40px;
    background-color: var(--muted);
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
}

.track-item-details {
    min-width: 0;
}

.track-item-details .title {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
}

.track-item-details .artist {
    font-size: .9rem;
    color: var(--muted-foreground);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-item-duration {
    font-size: .9rem;
    color: var(--muted-foreground);
    justify-self: flex-end;
}

.track-item.playing .track-number,
.track-item.playing .track-item-details .title {
    color: var(--highlight);
}

.detail-header {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
}

.detail-header-image {
    width: 200px;
    height: 200px;
    flex-shrink: 0;
    background-color: var(--muted);
    border-radius: var(--radius);
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .5);
    transition: opacity 0.3s ease-in-out;
}

.detail-header-image.loading {
    opacity: 0.3;
}

.detail-header-image.artist {
    border-radius: 50%;
}

.detail-header-info .type {
    font-weight: 600;
    margin-bottom: .5rem;
}

.detail-header-info .title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.detail-header-info .meta {
    color: var(--muted-foreground);
    margin-top: 1rem;
}

.detail-header-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background-color: var(--primary);
    color: var(--primary-foreground);
    border: none;
    border-radius: 2rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary svg {
    flex-shrink: 0;
}

.settings-list {
    max-width: 800px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--border);
    gap: var(--spacing-lg);
}

.setting-item .info {
    display: flex;
    flex-direction: column;
}

.setting-item .label {
    font-weight: 500;
}

.setting-item .description {
    font-size: .9rem;
    color: var(--muted-foreground);
}

.setting-item select {
    background-color: var(--input);
    color: var(--foreground);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem;
}

.setting-item input[type="number"] {
    background-color: var(--input);
    color: var(--foreground);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.5rem;
    width: 100px;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--secondary);
    transition: .3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: var(--foreground);
    transition: .3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(16px);
    background-color: var(--primary-foreground);
}

.btn-secondary {
    padding: 0.5rem 1rem;
    background-color: var(--secondary);
    color: var(--foreground);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.now-playing-bar .track-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 0;
}

.track-info .cover {
    width: 56px;
    height: 56px;
    border-radius: 4px;
    background-color: var(--muted);
    object-fit: cover;
    flex-shrink: 0;
}

.track-info .details {
    min-width: 0;
}

.track-info .details .title {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: color 0.2s;
}

.track-info .details .title:hover {
    color: var(--highlight);
}

.track-info .details .artist {
    font-size: .8rem;
    color: var(--muted-foreground);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    transition: color 0.2s;
}

.track-info .details .artist:hover {
    color: var(--highlight);
}

.player-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.player-controls .buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.player-controls .buttons button {
    background: transparent;
    border: none;
    color: var(--muted-foreground);
    cursor: pointer;
    transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    position: relative;
}

.player-controls .buttons button:hover {
    color: var(--foreground);
    background-color: var(--secondary);
}

.player-controls .buttons button.active {
    color: var(--active-highlight);
}

.player-controls .buttons button#repeat-btn.repeat-one::after {
    content: '1';
    position: absolute;
    font-size: 0.6rem;
    font-weight: bold;
    bottom: 4px;
    right: 6px;
}

.player-controls .buttons .play-pause-btn {
    background-color: var(--primary);
    color: var(--primary-foreground);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.player-controls .buttons .play-pause-btn:hover {
    transform: scale(1.05);
    background-color: var(--primary);
    color: var(--primary-foreground);
}

.player-controls .progress-container {
    width: 100%;
    max-width: 500px;
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: .8rem;
    color: var(--muted-foreground);
}

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

.progress-bar .progress-fill {
    width: 0;
    height: 100%;
    background-color: var(--foreground);
    border-radius: 2px;
    transition: width .1s linear;
    position: relative;
}

.progress-bar:hover .progress-fill {
    background-color: var(--highlight);
}

.progress-bar:hover .progress-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: var(--highlight);
    border-radius: 50%;
}

.volume-controls {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: .75rem;
}

.volume-controls button {
    background: transparent;
    border: none;
    color: var(--muted-foreground);
    cursor: pointer;
    transition: color .2s;
    padding: 0.5rem;
    border-radius: var(--radius);
}

.volume-controls button:hover {
    color: var(--foreground);
    background-color: var(--secondary);
}

.volume-controls .volume-bar {
    width: 100px;
    height: 4px;
    background-color: var(--secondary);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
}

.volume-controls .volume-bar .volume-fill {
    width: 70%;
    height: 100%;
    background-color: var(--foreground);
    border-radius: 2px;
}

.volume-controls .volume-bar:hover .volume-fill {
    background-color: var(--highlight);
}

.volume-controls .volume-bar:hover .volume-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: var(--highlight);
    border-radius: 50%;
}

#context-menu {
    display: none;
    position: absolute;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: .5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .5);
    z-index: 1000;
    min-width: 160px;
}

#context-menu ul {
    list-style: none;
}

#context-menu li {
    padding: .5rem .75rem;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color .2s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
}

#context-menu li:hover {
    background-color: var(--secondary);
}

#queue-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, .7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

#queue-modal {
    background-color: var(--card);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, .8);
    animation: scaleIn 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

#queue-modal-header {
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

#queue-modal-header h3 {
    margin: 0;
}

#queue-modal-header button {
    background: transparent;
    border: none;
    color: var(--muted-foreground);
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    transition: all .2s;
}

#queue-modal-header button:hover {
    background-color: var(--secondary);
    color: var(--foreground);
}

#queue-list {
    overflow-y: auto;
    padding: .5rem;
}

.queue-track-item {
    display: grid;
    grid-template-columns: 32px 1fr auto auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    cursor: grab;
    transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 2px;
}

.queue-track-item:active {
    cursor: grabbing;
}

.queue-track-item:hover {
    background-color: var(--secondary);
}

.queue-track-item.playing {
    background-color: var(--secondary);
}

.queue-track-item .drag-handle {
    color: var(--muted-foreground);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
}

.queue-track-item .track-menu-btn {
    background: transparent;
    border: none;
    color: var(--muted-foreground);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all .2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.queue-track-item .track-menu-btn:hover {
    background-color: var(--muted);
    color: var(--foreground);
}

.queue-track-menu {
    display: none;
    position: absolute;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: .5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .5);
    z-index: 1001;
    min-width: 120px;
}

.queue-track-menu.show {
    display: block;
}

.queue-track-menu ul {
    list-style: none;
}

.queue-track-menu li {
    padding: .5rem .75rem;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color .2s;
    font-size: 0.9rem;
}

.queue-track-menu li:hover {
    background-color: var(--secondary);
}

.placeholder-text {
    padding: 2rem 1rem;
    color: var(--muted-foreground);
    text-align: center;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .5; }
}

.placeholder-text.loading {
    animation: pulse 1.5s infinite ease-in-out;
}

#api-instance-manager {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

#api-instance-list {
    list-style: none;
    margin-bottom: 1rem;
}

#api-instance-list li {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem;
    background-color: var(--secondary);
    border-radius: var(--radius);
    margin-bottom: .5rem;
}

#api-instance-list li .instance-url {
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: .9rem;
}

#api-instance-list li .controls {
    display: flex;
    gap: .5rem;
}

#api-instance-list li button {
    background: transparent;
    border: none;
    color: var(--muted-foreground);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all .2s cubic-bezier(0.4, 0, 0.2, 1);
}

#api-instance-list li button:hover {
    color: var(--foreground);
    background-color: var(--muted);
}

#api-instance-list li button:disabled {
    opacity: .3;
    cursor: not-allowed;
}

#sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .5);
    z-index: 1999;
    backdrop-filter: blur(2px);
}

.about-content {
    padding: 1rem 0;
}

.about-description {
    color: var(--foreground);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.about-features,
.about-tech {
    margin-bottom: 1.5rem;
}

.about-features h4,
.about-tech h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--foreground);
}

.about-features ul {
    list-style: none;
    padding: 0;
}

.about-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--foreground);
    line-height: 1.5;
}

.about-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--highlight);
    font-weight: bold;
}

.about-tech p {
    color: var(--muted-foreground);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.about-links {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.github-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--foreground);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.github-link:hover {
    background-color: var(--secondary);
    border-color: var(--highlight);
    transform: translateY(-2px);
}

.github-link svg {
    flex-shrink: 0;
}

.about-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.about-footer p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.about-footer .version {
    color: var(--foreground);
    font-weight: 600;
}

.about-footer .license {
    color: var(--muted-foreground);
}

.about-footer .disclaimer {
    color: var(--muted-foreground);
    font-size: 0.8rem;
    font-style: italic;
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: var(--secondary);
    border-radius: var(--radius);
    border-left: 3px solid var(--muted-foreground);
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--secondary) 0%,
        var(--muted) 50%,
        var(--secondary) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--radius);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-track {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    margin-bottom: 2px;
}

.skeleton-track-number {
    width: 24px;
    height: 20px;
    margin: 0 auto;
}

.skeleton-track-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 0;
}

.skeleton-track-cover {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 4px;
}

.skeleton-track-details {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.skeleton-track-title {
    height: 16px;
    width: 60%;
    max-width: 200px;
}

.skeleton-track-artist {
    height: 14px;
    width: 40%;
    max-width: 150px;
}

.skeleton-track-duration {
    width: 40px;
    height: 14px;
}

.skeleton-card {
    background-color: var(--card);
    border-radius: var(--radius);
    padding: var(--spacing-md);
}

.skeleton-card-image {
    width: 100%;
    aspect-ratio: 1/1;
    margin-bottom: var(--spacing-md);
    border-radius: calc(var(--radius) - 4px);
}

.skeleton-card.artist .skeleton-card-image {
    border-radius: 50%;
}

.skeleton-card-title {
    height: 18px;
    width: 80%;
    margin-bottom: var(--spacing-xs);
}

.skeleton-card-subtitle {
    height: 14px;
    width: 60%;
}

.skeleton-container {
    width: 100%;
}

.theme-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.theme-option {
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    font-weight: 500;
}

.theme-option:hover {
    border-color: var(--highlight);
    background-color: var(--secondary);
}

.theme-option.active {
    border-color: var(--primary);
    background-color: var(--primary);
    color: var(--primary-foreground);
}

.custom-theme-editor {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--secondary);
    border-radius: var(--radius);
    display: none;
}

.custom-theme-editor.show {
    display: block;
}

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

.theme-color-input {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.theme-color-input label {
    font-size: 0.9rem;
    color: var(--muted-foreground);
}

.theme-color-input input[type="color"] {
    width: 100%;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
}

.theme-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

#download-notifications {
    position: fixed;
    bottom: 120px;
    right: 20px;
    z-index: 9999;
    max-width: 350px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.download-task {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.3s ease;
}

.download-cancel:hover {
    background: var(--secondary) !important;
    color: var(--foreground) !important;
}

@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 240px 1fr;
    }
    
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: var(--spacing-md);
    }
    
    .detail-header-info .title {
        font-size: 3rem;
    }
    
    .main-content {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
        grid-template-areas: 
            "header" 
            "main" 
            "player";
    }
    
    .main-content {
        padding: var(--spacing-md);
        grid-area: main;
    }
    
    .main-header {
        grid-area: header;
        padding: var(--spacing-md) var(--spacing-md) 0 var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100%;
        transform: translateX(-100%);
        box-shadow: 0 0 20px rgba(0, 0, 0, .5);
    }
    
    .sidebar.is-open {
        transform: translateX(0);
    }
    
    .hamburger-menu {
        display: block;
    }
    
    #sidebar-overlay.is-visible {
        display: block;
    }
    
    .search-bar {
        max-width: none;
    }
    
    .content-section {
        margin-bottom: var(--spacing-xl);
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-md);
    }
    
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-md);
    }
    
    .detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
        padding-bottom: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .detail-header-image {
        width: 150px;
        height: 150px;
    }
    
    .detail-header-info .title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .now-playing-bar {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
        height: auto;
    }
    
    .now-playing-bar .track-info {
        grid-column: 1;
        grid-row: 1;
        width: 100%;
        justify-content: flex-start;
    }
    
    .track-info .cover {
        width: 48px;
        height: 48px;
    }
    
    .track-info .details {
        max-width: calc(100% - 64px);
    }
    
    .now-playing-bar .player-controls {
        grid-column: 1;
        grid-row: 2;
        width: 100%;
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .player-controls .progress-container {
        max-width: none;
    }
    
    .now-playing-bar .volume-controls {
        display: none;
    }
    
    .about-links {
        flex-direction: column;
    }
    
    .github-link {
        width: 100%;
        justify-content: center;
    }
    
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .setting-item .info {
        width: 100%;
    }

    .detail-header-actions {
        width: 100%;
    }

    .btn-primary {
        width: 100%;
    }

    #download-notifications {
        bottom: 160px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .detail-header-info .title {
        font-size: 1.75rem;
    }
    
    .search-tab {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
}