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

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #e4e4e7;
    --text-secondary: #a1a1aa;
    --accent: #e60026;
    --accent-hover: #ff4757;
    --border: #27272a;
    --hover-bg: #27272a;
    --player-height: 80px;
    --header-height: 56px;
    --tabs-height: 44px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: default;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, #e60026, #ff4757);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    flex: 1;
    max-width: 480px;
    transition: border-color 0.2s;
}

.search-box:focus-within {
    border-color: var(--accent);
}

.search-box input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 8px 16px;
    font-size: 14px;
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.btn-search {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 8px 12px;
    cursor: pointer;
    transition: color 0.2s;
}

.btn-search:hover {
    color: var(--accent);
}

/* Platform tabs */
.platform-tabs {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0 20px;
    flex-shrink: 0;
    height: var(--tabs-height);
}

.platform-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0 20px;
    font-size: 14px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
    position: relative;
    font-family: inherit;
}

.platform-tab:hover {
    color: var(--text-primary);
}

.platform-tab.active {
    color: var(--text-primary);
    border-bottom-color: var(--platform-color, var(--accent));
}

/* Main content */
.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.content-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.result-count {
    font-size: 12px;
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 10px;
}

/* Song list */
.song-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 8px;
}

.song-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s;
    gap: 12px;
}

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

.song-item.playing {
    background: rgba(230, 0, 38, 0.15);
}

.song-index {
    width: 24px;
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.song-cover {
    width: 44px;
    height: 44px;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--bg-tertiary);
}

.song-info {
    flex: 1;
    min-width: 0;
}

.song-title {
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.song-artist {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.song-album {
    font-size: 12px;
    color: var(--text-secondary);
    width: 140px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: none;
}

.song-duration {
    font-size: 12px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.song-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 4px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    color: var(--accent);
    background: rgba(230, 0, 38, 0.1);
}

.btn-icon.added {
    color: var(--accent);
}

/* Empty state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    text-align: center;
}

.empty-state p {
    margin-top: 16px;
    font-size: 15px;
}

.empty-state .sub {
    font-size: 13px;
    color: #71717a;
    margin-top: 8px;
}

.empty-state.small {
    padding: 30px 20px;
}

.empty-state.small p {
    font-size: 13px;
    margin-top: 8px;
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--text-secondary);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Playlist panel */
.playlist-panel {
    width: 320px;
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.playlist-panel .panel-header {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-clear {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 4px;
    cursor: pointer;
    border-radius: 4px;
    transition: color 0.15s;
    display: flex;
}

.btn-clear:hover {
    color: var(--accent);
}

.playlist-songs {
    flex: 1;
    overflow-y: auto;
    padding: 0 8px;
}

.playlist-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    gap: 10px;
    transition: background 0.15s;
}

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

.playlist-item.active {
    background: rgba(230, 0, 38, 0.15);
}

.playlist-item .song-cover {
    width: 36px;
    height: 36px;
}

.playlist-item .song-title {
    font-size: 13px;
}

.playlist-item .song-artist {
    font-size: 11px;
}

.btn-remove {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 2px;
    cursor: pointer;
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.15s;
}

.playlist-item:hover .btn-remove {
    opacity: 1;
}

.btn-remove:hover {
    color: #ef4444;
}

/* Player bar */
.player-bar {
    height: var(--player-height);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 20px;
    flex-shrink: 0;
}

.player-left {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 220px;
    flex-shrink: 0;
}

.player-cover {
    width: 48px;
    height: 48px;
    border-radius: 6px;
    object-fit: cover;
    background: var(--bg-tertiary);
}

.player-info {
    min-width: 0;
}

.player-title {
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-artist {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.player-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ctrl-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 50%;
    transition: all 0.15s;
    display: flex;
}

.ctrl-btn:hover {
    color: var(--text-primary);
}

.ctrl-play {
    background: var(--accent);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ctrl-play:hover {
    background: var(--accent-hover);
    color: white;
}

.progress-bar-container {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    max-width: 500px;
}

.time {
    font-size: 11px;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
    min-width: 36px;
}

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

.progress-bar:hover {
    height: 6px;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s linear;
}

.progress-thumb {
    display: none;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: var(--accent);
    border-radius: 50%;
    left: 0%;
}

.progress-bar:hover .progress-thumb {
    display: block;
}

.player-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.volume-bar {
    width: 80px;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    cursor: pointer;
}

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

.platform-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    margin-left: 8px;
}

/* Toast */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    animation: slideIn 0.3s ease;
    max-width: 300px;
}

.toast.success {
    background: #065f46;
    color: #6ee7b7;
}

.toast.error {
    background: #7f1d1d;
    color: #fca5a5;
}

.toast.info {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #3f3f46;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #52525b;
}

/* Import button */
.btn-import {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(230, 0, 38, 0.12);
    border: 1px solid rgba(230, 0, 38, 0.25);
    color: var(--accent);
    padding: 8px 14px;
    border-radius: 18px;
    cursor: pointer;
    font-size: 13px;
    font-family: inherit;
    white-space: nowrap;
    transition: all 0.2s;
}

.btn-import:hover {
    background: rgba(230, 0, 38, 0.2);
}

.btn-import-text {
    font-size: 13px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 420px;
    max-width: 90vw;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}

.modal-close:hover { color: var(--text-primary); }

.modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.modal-input {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 10px 14px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.modal-input:focus { border-color: var(--accent); }

.modal-input::placeholder { color: var(--text-secondary); }

.modal-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

.btn-primary {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px;
    font-size: 14px;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.2s;
}

.btn-primary:hover { background: var(--accent-hover); }

/* Chart sections */
.charts-container {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0 20px;
}

.chart-section {
    margin-bottom: 24px;
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    margin-bottom: 8px;
}

.chart-title {
    font-size: 15px;
    font-weight: 600;
}

.chart-play-all {
    display: flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 14px;
    font-size: 12px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s;
}

.chart-play-all:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.chart-songs {
    padding: 0 8px;
}

.chart-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.chart-song-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    gap: 10px;
    transition: background 0.15s;
}

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

.chart-song-item .song-index {
    width: 22px;
    font-size: 12px;
}

.chart-song-item .song-cover {
    width: 36px;
    height: 36px;
}

.chart-song-item .song-title {
    font-size: 13px;
}

.chart-song-item .song-artist {
    font-size: 11px;
}

.chart-song-item .btn-icon {
    opacity: 0;
}

.chart-song-item:hover .btn-icon {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .playlist-panel { display: none; }
    .player-left { width: 160px; }
    .song-album { display: none; }
    .platform-tab { padding: 0 12px; font-size: 13px; }
    .logo-text { display: none; }
}