/* ========== 基础重置 & 暗黑主题 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #0a0a0f;
    --surface: #13131f;
    --surface-light: #1a1a2e;
    --primary: #6c5ce7;
    --primary-glow: #a29bfe;
    --accent: #00cec9;
    --text: #e0e0e0;
    --text-dim: #888;
    --danger: #ff6b6b;
    --radius: 16px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    user-select: none;
    -webkit-user-select: none;
}

/* ========== 背景粒子动画 ========== */
.bg-particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}
.particle {
    position: absolute;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0;
    animation: floatUp 6s linear infinite;
}
@keyframes floatUp {
    0%   { transform: translateY(110vh) scale(0); opacity: 0; }
    10%  { opacity: 0.6; }
    90%  { opacity: 0.1; }
    100% { transform: translateY(-10vh) scale(1.5); opacity: 0; }
}

/* ========== 首页：垂直布局 ========== */
#pageHome.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    height: calc(100vh - 140px);
    min-height: 500px;
    padding-top: 8px;
}

/* ========== 当前播放信息条 ========== */
.now-playing-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    max-width: 700px;
}
.now-playing-bar .cover-wrapper {
    position: relative;
    width: 72px;
    height: 72px;
    border-radius: 14px;
    overflow: hidden;
    flex-shrink: 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 20px rgba(108,92,231,0.15);
    transition: var(--transition);
}
.now-playing-bar .cover-wrapper.playing {
    box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 40px rgba(108,92,231,0.25);
    animation: coverPulse 2s ease-in-out infinite;
}
.now-playing-bar .cover-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.now-playing-bar .equalizer {
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 2px;
    align-items: flex-end;
    height: 16px;
    opacity: 0;
    transition: opacity 0.3s;
}
.now-playing-bar .equalizer.active { opacity: 1; }
.now-playing-bar .equalizer span {
    width: 2px;
    background: var(--accent);
    border-radius: 1px;
    animation: eqBounce 0.8s ease-in-out infinite;
}
.now-playing-bar .equalizer span:nth-child(1) { height: 8px; animation-delay: 0s; }
.now-playing-bar .equalizer span:nth-child(2) { height: 16px; animation-delay: 0.1s; }
.now-playing-bar .equalizer span:nth-child(3) { height: 12px; animation-delay: 0.2s; }
.now-playing-bar .equalizer span:nth-child(4) { height: 14px; animation-delay: 0.3s; }
.now-playing-bar .equalizer span:nth-child(5) { height: 10px; animation-delay: 0.4s; }

.now-playing-bar .track-info { min-width: 0; }
.now-playing-bar .track-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.now-playing-bar .track-artist {
    font-size: 0.8rem;
    color: var(--text-dim);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ========== 居中搜索区（封面上方） ========== */
.search-section {
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 10;
}
.search-bar-main {
    display: flex;
    align-items: center;
    background: var(--surface-light);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 4px;
    transition: var(--transition);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.search-bar-main:focus-within {
    border-color: var(--primary);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3), 0 0 30px rgba(108,92,231,0.15);
}
.search-bar-main .search-icon {
    color: var(--text-dim);
    margin: 0 12px;
    flex-shrink: 0;
}
.search-bar-main input {
    flex: 1;
    padding: 14px 4px;
    border: none;
    background: transparent;
    color: var(--text);
    font-size: 1rem;
    outline: none;
}
.search-bar-main input::placeholder { color: #555; }
.search-bar-main button {
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.search-bar-main button:hover { background: #7c6ff7; }

/* 搜索下拉 */
.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    max-height: 360px;
    overflow-y: auto;
    box-shadow: 0 12px 40px rgba(0,0,0,0.5);
    scrollbar-width: thin;
    scrollbar-color: #333 transparent;
}
.search-dropdown::-webkit-scrollbar { width: 4px; }
.search-dropdown::-webkit-scrollbar-track { background: transparent; }
.search-dropdown::-webkit-scrollbar-thumb { background: #333; border-radius: 4px; }

/* 通用关键帧 */
@keyframes coverPulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 20px rgba(108,92,231,0.2); }
    50%      { box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 50px rgba(108,92,231,0.4); }
}
@keyframes eqBounce {
    0%, 100% { transform: scaleY(0.4); }
    50%      { transform: scaleY(1); }
}

/* ========== 歌词弹幕舞台 ========== */
.lyric-stage {
    flex: 1;
    width: 100%;
    max-width: 700px;
    min-height: 180px;
    overflow: hidden;
    position: relative;
    border-radius: 20px;
    background: var(--surface);
    border: 1px solid rgba(255,255,255,0.05);
}
.lyric-danmaku {
    position: absolute;
    inset: 0;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: #222 transparent;
    mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
}
.lyric-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100%;
    padding: 24px 32px;
}
/* 有歌词时：前几句舒服显示，底部留白让末句可滚到中央 */
.lyric-danmaku.has-lyrics .lyric-inner {
    justify-content: flex-start;
    padding: 48px 32px 60vh; /* 顶部小留白 + 底部大留白 */
}
.lyric-danmaku::-webkit-scrollbar { width: 4px; }
.lyric-danmaku::-webkit-scrollbar-track { background: transparent; }
.lyric-danmaku::-webkit-scrollbar-thumb { background: #222; border-radius: 4px; }

.lyric-placeholder {
    text-align: center;
    color: var(--text-dim);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}
.lyric-placeholder .lp-icon { font-size: 2.5rem; opacity: 0.6; }
.lyric-placeholder .lp-text { font-size: 0.9rem; }

.lyric-line {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.3);
    padding: 12px 0;
    text-align: center;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    line-height: 1.8;
    letter-spacing: 0.5px;
    width: 100%;
}
.lyric-line.active {
    color: #fff;
    font-size: 1.4rem;
    font-weight: 700;
    text-shadow:
        0 0 20px rgba(108,92,231,0.6),
        0 0 40px rgba(108,92,231,0.3),
        0 0 80px rgba(0,206,201,0.2);
    padding: 16px 0;
}

/* 播放列表通用项（搜索结果 + 歌单） */
.item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.item-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.item-artist {
    font-size: 0.75rem;
    color: var(--text-dim);
}
.item-duration {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-variant-numeric: tabular-nums;
}

/* ========== 进度条 ========== */
.progress-section {
    display: flex;
    align-items: center;
    gap: 12px;
}
.time {
    font-size: 0.75rem;
    color: var(--text-dim);
    font-variant-numeric: tabular-nums;
    min-width: 38px;
}

.progress-bar {
    flex: 1;
    height: 5px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
}
.progress-bar:hover { height: 7px; }
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
    position: relative;
}
.progress-thumb {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 13px;
    height: 13px;
    background: #fff;
    border-radius: 50%;
    left: 0%;
    opacity: 0;
    transition: opacity 0.2s, left 0.1s linear;
    box-shadow: 0 0 10px rgba(255,255,255,0.3);
}
.progress-bar:hover .progress-thumb { opacity: 1; }

/* ========== 播放控制（首页底部） ========== */
.player-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}
.volume-inline {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 12px;
}

.ctrl-btn {
    width: 42px;
    height: 42px;
    border: none;
    border-radius: 50%;
    background: var(--surface-light);
    color: var(--text);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.ctrl-btn:hover {
    background: #2a2a40;
    transform: scale(1.05);
}
.ctrl-btn:active { transform: scale(0.95); }
.ctrl-btn.active {
    color: var(--accent);
    background: rgba(0,206,201,0.1);
}

.play-btn {
    width: 56px;
    height: 56px;
    background: var(--primary);
    color: #fff;
    font-size: 1.3rem;
    box-shadow: 0 4px 20px rgba(108,92,231,0.4);
}
.play-btn:hover {
    background: #7c6ff7;
    box-shadow: 0 4px 30px rgba(108,92,231,0.6);
    transform: scale(1.08);
}

.volume-icon {
    font-size: 1rem;
    cursor: pointer;
}

.volume-slider {
    -webkit-appearance: none;
    width: 120px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255,255,255,0.15);
    outline: none;
    cursor: pointer;
}
.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    box-shadow: 0 0 8px rgba(255,255,255,0.2);
}

/* ========== 搜索加载 ========== */
.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-dim);
    font-size: 0.85rem;
}
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--text-dim);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-hint {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-dim);
    font-size: 0.85rem;
    line-height: 1.8;
}
.empty-hint small { color: #555; }

/* ========== 搜索结果列表 ========== */
#searchResults {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
}
.result-item:hover { background: var(--surface-light); }
.result-item img {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    object-fit: cover;
    background: var(--surface-light);
}
.result-item .item-badge {
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255,107,107,0.15);
    color: var(--danger);
    white-space: nowrap;
}
.result-item .item-badge.free {
    background: rgba(0,206,201,0.15);
    color: var(--accent);
}


/* ========== 导航栏 ========== */
body { display: block; min-height: 100vh; }
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    height: 56px;
    background: rgba(13,13,25,0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav-brand { color: #fff; font-size: 1.1rem; font-weight: 700; }
.nav-links { display: flex; gap: 4px; }
.nav-link {
    color: var(--text-dim);
    text-decoration: none;
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.85rem;
    transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
    color: #fff;
    background: var(--surface-light);
}
.nav-user { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; }

/* ========== 弹窗 ========== */
.modal-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,0.7);
    display: flex; align-items: center; justify-content: center;
}
.modal {
    background: var(--surface);
    border-radius: 20px;
    padding: 40px;
    width: 380px;
    max-width: 90vw;
    position: relative;
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-close {
    position: absolute; top: 14px; right: 16px;
    background: none; border: none; color: var(--text-dim);
    font-size: 1.2rem; cursor: pointer;
}
.modal-title { text-align: center; margin-bottom: 24px; font-size: 1.3rem; color: #fff; }
.auth-switch { text-align: center; margin-top: 14px; font-size: 0.82rem; color: var(--text-dim); }
.auth-switch a { color: var(--primary); text-decoration: none; }
.auth-error { text-align: center; color: var(--danger); font-size: 0.8rem; margin-top: 10px; }

/* ========== 页面容器 ========== */
.page-container { padding: 72px 16px 40px; max-width: 1100px; margin: 0 auto; }
.page { display: none; }
.page.active { display: block; }
.page-title { color: #fff; font-size: 1.6rem; margin-bottom: 20px; }

/* ========== 分类标签 ========== */
.cat-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.cat-tag {
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}
.cat-tag:hover { border-color: var(--primary); color: #fff; }
.cat-tag.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ========== 歌单网格 ========== */
.playlist-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; }
.playlist-card {
    background: var(--surface-light);
    border-radius: 12px;
    padding: 12px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}
.playlist-card:hover { border-color: rgba(108,92,231,0.3); transform: translateY(-2px); }
.playlist-card img {
    width: 100%; aspect-ratio: 1;
    border-radius: 8px; object-fit: cover;
    background: var(--surface);
}
.playlist-card .card-name {
    font-size: 0.85rem; font-weight: 600; color: #fff;
    margin-top: 8px; overflow: hidden; text-overflow: ellipsis;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.playlist-card .card-count { font-size: 0.72rem; color: var(--text-dim); margin-top: 4px; }

/* ========== 歌单详情 ========== */
.playlist-detail-header { display: flex; gap: 20px; align-items: center; margin-bottom: 20px; }
.playlist-detail-header img { width: 120px; height: 120px; border-radius: 12px; object-fit: cover; }
.playlist-detail-header .detail-info h3 { color: #fff; font-size: 1.2rem; }
.playlist-detail-header .detail-info p { color: var(--text-dim); font-size: 0.8rem; margin-top: 4px; }
.song-list { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.song-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 14px; border-radius: 10px;
    cursor: pointer; transition: var(--transition);
}
.song-item:hover { background: var(--surface-light); }
.song-item .song-index { color: var(--text-dim); font-size: 0.85rem; min-width: 24px; text-align: center; }
.song-item .fav-star { cursor: pointer; font-size: 1rem; transition: 0.2s; }
.song-item .fav-star:hover { transform: scale(1.2); }

/* ========== 收藏列表 ========== */
.fav-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }

/* ========== 后台 ========== */
.stats-cards { display: flex; gap: 16px; margin-bottom: 24px; }
.stat-card {
    flex: 1; background: var(--surface-light);
    border-radius: 12px; padding: 20px;
    text-align: center;
}
.stat-card .stat-num { font-size: 2rem; font-weight: 700; color: var(--primary); }
.stat-card .stat-label { font-size: 0.8rem; color: var(--text-dim); margin-top: 4px; }
.table-wrapper { overflow-x: auto; }
.user-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.user-table th { text-align: left; padding: 12px 16px; color: var(--text-dim); border-bottom: 1px solid rgba(255,255,255,0.06); }
.user-table td { padding: 12px 16px; color: var(--text); border-bottom: 1px solid rgba(255,255,255,0.03); }
.user-table tr:hover td { background: var(--surface-light); }

/* ========== 通用组件 ========== */
.form-group { margin-bottom: 14px; }
.form-group input {
    width: 100%; padding: 12px 16px;
    border: 1px solid rgba(255,255,255,0.1); border-radius: 10px;
    background: var(--surface-light); color: var(--text); font-size: 0.9rem; outline: none;
}
.form-group input:focus { border-color: var(--primary); }
.btn-primary {
    padding: 12px 24px; border: none; border-radius: 10px;
    background: var(--primary); color: #fff; font-size: 0.95rem;
    cursor: pointer; transition: var(--transition);
}
.btn-primary:hover { background: #7c6ff7; }
.full-width { width: 100%; }
.btn-small {
    padding: 6px 14px; border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px; background: transparent; color: var(--text);
    font-size: 0.82rem; cursor: pointer; transition: var(--transition);
}
.btn-small:hover { border-color: var(--primary); color: #fff; }
.btn-back {
    background: var(--surface-light); border: none;
    color: var(--text); padding: 8px 16px; border-radius: 8px;
    cursor: pointer; margin-bottom: 16px; font-size: 0.85rem;
}
.btn-back:hover { color: #fff; }
#userInfo { display: flex; align-items: center; gap: 8px; }
input::placeholder { color: #555; }

/* ========== 底部播放栏 ========== */
.bottom-player {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(13,13,25,0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 8px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    height: 64px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}
.bottom-player.visible { transform: translateY(0); }
.bottom-player .bp-cover {
    width: 44px; height: 44px;
    border-radius: 8px; object-fit: cover;
    cursor: pointer;
}
.bottom-player .bp-info {
    flex: 1; min-width: 0;
}
.bottom-player .bp-title {
    font-size: 0.85rem; font-weight: 600; color: #fff;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.bottom-player .bp-artist {
    font-size: 0.72rem; color: var(--text-dim);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.bottom-player .bp-controls {
    display: flex; align-items: center; gap: 12px;
}
.bottom-player .bp-btn {
    width: 36px; height: 36px;
    border: none; border-radius: 50%;
    background: var(--surface-light);
    color: var(--text); font-size: 0.9rem;
    cursor: pointer; transition: var(--transition);
}
.bottom-player .bp-btn:hover { background: #2a2a40; }
.bottom-player .bp-btn-play {
    width: 44px; height: 44px;
    background: var(--primary); color: #fff; font-size: 1rem;
    box-shadow: 0 2px 12px rgba(108,92,231,0.4);
}
.bottom-player .bp-btn-play:hover { background: #7c6ff7; }
.bottom-player .bp-progress {
    position: absolute; top: -2px; left: 0; right: 0;
    height: 2px; background: rgba(255,255,255,0.1);
    cursor: pointer;
}
.bottom-player .bp-progress-fill {
    height: 100%; background: var(--primary);
    width: 0%; transition: width 0.1s linear;
}
.bottom-player .bp-volume {
    width: 80px;
}
.page-container { padding-bottom: 80px; }

/* ========== 响应式：手机端 ========== */
@media (max-width: 720px) {
    #pageHome.active { gap: 10px; height: calc(100vh - 120px); }
    .now-playing-bar .cover-wrapper { width: 52px; height: 52px; border-radius: 10px; }
    .now-playing-bar .track-title { font-size: 0.95rem; }
    .lyric-stage { min-height: 140px; padding-top: 64px; }
    .lyric-line { font-size: 0.9rem; padding: 8px 0; }
    .lyric-line.active { font-size: 1.15rem; }
    .search-section { width: 100%; }
    .search-bar-main input { font-size: 0.85rem; padding: 10px 4px; }
    .ctrl-btn { width: 38px; height: 38px; font-size: 0.85rem; }
    .play-btn { width: 50px; height: 50px; }
    .volume-inline { margin-left: 0; }
}