/* ============================================================
   FileServer — 现代简约主题（暗色为主，亮色可切换）
   ============================================================ */

:root {
  --radius: 14px;
  --radius-sm: 9px;
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: "Cascadia Code", Consolas, "JetBrains Mono", monospace;
  --toolbar-h: 58px;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1014;
  --bg-soft: #14171d;
  --card: #1a1e26;
  --card-hover: #20252f;
  --border: rgba(255, 255, 255, .07);
  --border-strong: rgba(255, 255, 255, .13);
  --text: #e9ecf1;
  --text-2: #9aa3b2;
  --text-3: #636c7c;
  --accent: #4f8cff;
  --accent-strong: #6ba0ff;
  --accent-soft: rgba(79, 140, 255, .16);
  --danger: #ff6b6b;
  --shadow: 0 10px 30px rgba(0, 0, 0, .45);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, .35);
  --hover: rgba(255, 255, 255, .055);
  --toolbar-bg: rgba(14, 16, 20, .78);
  --thumb-bg: linear-gradient(145deg, #232936, #171b23);
  --scrollbar: rgba(255, 255, 255, .14);
  --lb-bg: rgba(6, 8, 12, .93);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f6f8;
  --bg-soft: #eceef2;
  --card: #ffffff;
  --card-hover: #f8f9fb;
  --border: rgba(20, 24, 32, .09);
  --border-strong: rgba(20, 24, 32, .16);
  --text: #1c2129;
  --text-2: #5c6572;
  --text-3: #9aa2ae;
  --accent: #2f6fe4;
  --accent-strong: #1c5fd6;
  --accent-soft: rgba(47, 111, 228, .1);
  --danger: #e5484d;
  --shadow: 0 10px 30px rgba(30, 40, 60, .13);
  --shadow-sm: 0 2px 10px rgba(30, 40, 60, .09);
  --hover: rgba(20, 24, 32, .045);
  --toolbar-bg: rgba(245, 246, 248, .82);
  --thumb-bg: linear-gradient(145deg, #e8ecf3, #dde2ea);
  --scrollbar: rgba(20, 24, 32, .22);
  --lb-bg: rgba(248, 249, 251, .95);
}

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

html, body { height: 100%; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-y: scroll;
}

::selection { background: var(--accent-soft); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

button { font-family: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select { font-family: inherit; color: inherit; }
img { display: block; }
a { color: var(--accent); text-decoration: none; }

.hidden { display: none !important; }

/* ============ 工具栏 ============ */

.toolbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--toolbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 16px;
  background: var(--toolbar-bg);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.toolbar-main { display: flex; align-items: center; gap: 6px; min-width: 0; flex: 1; }
.toolbar-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }

.icon-btn {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px;
  color: var(--text-2);
  transition: background .15s var(--ease), color .15s var(--ease), transform .1s var(--ease);
}
.icon-btn:hover { background: var(--hover); color: var(--text); }
.icon-btn:active { transform: scale(.92); }
.icon-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.brand-btn svg { fill: var(--accent); stroke: none; width: 24px; height: 24px; }

/* 面包屑 */
.crumbs {
  display: flex; align-items: center;
  min-width: 0; overflow-x: auto; white-space: nowrap;
  scrollbar-width: none;
}
.crumbs::-webkit-scrollbar { display: none; }
.crumb {
  display: inline-flex; align-items: center;
  color: var(--text-2); font-size: 14px;
  padding: 5px 9px; border-radius: 8px;
  transition: background .15s, color .15s;
  max-width: 180px; overflow: hidden; text-overflow: ellipsis;
}
.crumb:hover { background: var(--hover); color: var(--text); }
.crumb.current { color: var(--text); font-weight: 600; }
.crumb-sep { color: var(--text-3); font-size: 12px; user-select: none; margin: 0 1px; }

/* 搜索框 */
.searchbox {
  display: flex; align-items: center; gap: 7px;
  height: 36px; padding: 0 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 11px;
  transition: border-color .18s, box-shadow .18s, width .2s var(--ease);
  width: 220px;
}
.searchbox:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); width: 300px; }
.searchbox svg { width: 16px; height: 16px; fill: none; stroke: var(--text-3); stroke-width: 2; stroke-linecap: round; flex-shrink: 0; }
.searchbox input { flex: 1; min-width: 0; background: none; border: none; outline: none; font-size: 13.5px; color: var(--text); }
.searchbox input::placeholder { color: var(--text-3); }
.searchbox kbd {
  font-family: var(--mono); font-size: 11px; color: var(--text-3);
  border: 1px solid var(--border-strong); border-bottom-width: 2px;
  border-radius: 5px; padding: 1px 5px; background: var(--bg);
}
.search-clear { color: var(--text-3); font-size: 13px; padding: 2px 5px; border-radius: 5px; }
.search-clear:hover { color: var(--text); background: var(--hover); }

/* 分段控件 */
.seg { display: flex; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 11px; padding: 2px; }
.seg-btn {
  width: 32px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px; color: var(--text-3);
  transition: background .15s, color .15s;
}
.seg-btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.seg-btn:hover { color: var(--text); }
.seg-btn.active { background: var(--card); color: var(--accent); box-shadow: var(--shadow-sm); }
.icon-btn.active { color: var(--accent); background: var(--accent-soft); }

/* 排序 */
.sort-select {
  height: 36px; padding: 0 26px 0 12px;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 11px;
  font-size: 13px; color: var(--text-2); outline: none; cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6' fill='none' stroke='%239aa3b2' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center; background-size: 14px;
}
.sort-select:hover { border-color: var(--border-strong); }

.order-asc { transform: none; }
[data-order="desc"] .order-asc { transform: rotate(180deg); }
#btnOrder svg { transition: transform .2s var(--ease); }

/* 主题按钮 */
#btnTheme .icon-sun { display: none; }
[data-theme="dark"] #btnTheme .icon-moon { display: none; }
[data-theme="dark"] #btnTheme .icon-sun { display: block; }

/* ============ 主区域与网格 ============ */

#main { padding: 22px 18px 60px; max-width: 1600px; margin: 0 auto; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform .16s var(--ease), box-shadow .16s var(--ease), border-color .16s, background .16s;
  position: relative;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
  background: var(--card-hover);
}

.card-thumb {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--thumb-bg);
  overflow: hidden;
}
.card-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .25s var(--ease), opacity .2s;
}
.card:hover .card-thumb img { transform: scale(1.045); }
.card-thumb img.placeholder { opacity: .85; }

.card-badge {
  position: absolute; left: 8px; top: 8px;
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(12, 14, 18, .55);
  backdrop-filter: blur(8px);
  border-radius: 9px;
  color: #fff;
  opacity: 0; transform: translateY(-4px);
  transition: opacity .18s, transform .18s;
  pointer-events: none;
}
.card:hover .card-badge { opacity: 1; transform: none; }
.card-badge svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

.card-dl {
  position: absolute; right: 8px; top: 8px;
  width: 32px; height: 32px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(12, 14, 18, .6);
  backdrop-filter: blur(8px);
  border-radius: 9px;
  color: #fff;
  opacity: 0; transform: translateY(-4px);
  transition: opacity .18s, transform .18s, background .15s;
}
.card-dl svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.card:hover .card-dl { opacity: 1; transform: none; }
.card-dl:hover { background: var(--accent); }
.card-dl:active { transform: scale(.9); }

.card-info { padding: 10px 12px 11px; }
.card-name {
  font-size: 13.5px; font-weight: 550;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-meta { font-size: 12px; color: var(--text-3); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* 目录卡片：文件夹渐变小图 */
.card-thumb.dir { background: linear-gradient(145deg, #3a4a6b, #26334d); }
[data-theme="light"] .card-thumb.dir { background: linear-gradient(145deg, #d6e2f7, #b9cbed); }
.dir-icon { width: 64px; height: 64px; margin: auto; color: rgba(255, 255, 255, .92); }
[data-theme="light"] .dir-icon { color: #33507e; }
.dir-icon svg { width: 100%; height: 100%; fill: currentColor; }
.card-thumb .centered-icon { display: flex; align-items: center; justify-content: center; height: 100%; }

/* 类型图标 fallback（无缩略图） */
.type-icon { width: 44px; height: 44px; }
.type-icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.kind-image .type-icon { color: #5aa8ff; }
.kind-video .type-icon { color: #b78aff; }
.kind-audio .type-icon { color: #4cd3a2; }
.kind-pdf .type-icon { color: #ff7a7a; }
.kind-archive .type-icon { color: #ffb454; }
.kind-text .type-icon { color: #8ad1ff; }
.kind-doc .type-icon { color: #6cb6ff; }
.kind-code .type-icon { color: #7ee787; }
.kind-other .type-icon { color: var(--text-3); }

/* 骨架屏 */
.skeleton { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: 14px; }
.sk-card {
  aspect-ratio: 1 / 1.32;
  border-radius: var(--radius);
  background: linear-gradient(100deg, var(--card) 40%, var(--card-hover) 50%, var(--card) 60%);
  background-size: 200% 100%;
  animation: shimmer 1.3s infinite linear;
  border: 1px solid var(--border);
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* 空状态 */
.empty { text-align: center; padding: 90px 20px; color: var(--text-3); }
.empty svg { width: 72px; height: 72px; margin: 0 auto 18px; fill: none; stroke: var(--text-3); stroke-width: 1.2; opacity: .5; }
.empty p { font-size: 15px; }

/* 加载更多 */
.load-more { text-align: center; padding: 26px 0 10px; }
.load-more button {
  padding: 9px 26px; border-radius: 12px;
  background: var(--accent-soft); color: var(--accent-strong); font-size: 13.5px; font-weight: 600;
  transition: background .15s, transform .1s;
}
.load-more button:hover { background: var(--accent); color: #fff; }
.load-more button:active { transform: scale(.96); }
.load-more span { display: block; margin-top: 8px; font-size: 12px; color: var(--text-3); }

/* ============ 列表视图 ============ */

.list-view table { width: 100%; border-collapse: collapse; }
.list-view th {
  text-align: left; font-size: 12px; font-weight: 600; color: var(--text-3);
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  position: sticky; top: var(--toolbar-h); background: var(--bg);
  z-index: 5;
}
.list-view td { padding: 8px 14px; border-bottom: 1px solid var(--border); font-size: 13.5px; }
.list-view tbody tr { cursor: pointer; transition: background .12s; }
.list-view tbody tr:hover { background: var(--hover); }
.col-name { width: auto; }
.col-size { width: 110px; color: var(--text-2); }
.col-time { width: 180px; color: var(--text-3); }
.col-act { width: 120px; text-align: right; }
.row-name { display: flex; align-items: center; gap: 10px; min-width: 0; }
.row-name svg { width: 19px; height: 19px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.row-name .rname { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-name .rkind { color: var(--accent); }
.row-name .rdir { color: var(--text-2); }
.row-act { opacity: 0; transition: opacity .15s; }
tr:hover .row-act { opacity: 1; }
.row-act .mini-btn {
  font-size: 12.5px; padding: 4px 10px; border-radius: 8px;
  color: var(--text-2); border: 1px solid var(--border-strong);
  transition: all .15s; margin-left: 6px;
}
.row-act .mini-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

/* ============ 预览视图 ============ */

.pv-title { display: flex; flex-direction: column; min-width: 0; }
.pv-name { font-size: 15px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pv-meta { font-size: 12px; color: var(--text-3); }

.pv-main { max-width: 1100px; margin: 0 auto; padding: 30px 18px 60px; }

.btn {
  display: inline-flex; align-items: center; gap: 7px;
  height: 36px; padding: 0 16px;
  border-radius: 11px; font-size: 13.5px; font-weight: 600;
  transition: background .15s, transform .1s, box-shadow .15s;
}
.btn svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-strong); box-shadow: 0 4px 16px var(--accent-soft); }
.btn.primary:active { transform: scale(.96); }

/* 播放器 */
.player {
  position: relative;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 9;
  max-height: 74vh;
  margin: 0 auto;
}
.player video { width: 100%; height: 100%; display: block; }
.player.audio { aspect-ratio: auto; background: var(--card); min-height: 120px; display: flex; align-items: center; }

.big-play {
  position: absolute; inset: 0; margin: auto;
  width: 76px; height: 76px; border-radius: 50%;
  background: rgba(255, 255, 255, .16);
  backdrop-filter: blur(10px);
  display: flex; align-items: center; justify-content: center;
  transition: transform .18s var(--ease), background .18s, opacity .3s;
  z-index: 3;
}
.big-play:hover { background: rgba(255, 255, 255, .26); transform: scale(1.06); }
.big-play svg { width: 30px; height: 30px; fill: #fff; margin-left: 4px; }
.big-play.hide { opacity: 0; pointer-events: none; transform: scale(.8); }
/* 缓冲中强制显示转圈（覆盖 .hide）：播放中停顿时大播放按钮原本是隐藏的，
   不强制显示则用户看不到任何加载反馈 */
.big-play.buffering { opacity: 1 !important; pointer-events: auto; transform: none; }
.big-play.buffering svg { animation: spin 1s linear infinite; }
.big-play.buffering::after {
  content: '加载中…';
  position: absolute; bottom: -26px; left: 50%; transform: translateX(-50%);
  font-size: 12px; color: #fff; white-space: nowrap;
  background: rgba(0,0,0,.5); padding: 2px 8px; border-radius: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.player-bar {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px 12px;
  background: linear-gradient(transparent, rgba(0, 0, 0, .82));
  opacity: 0; transform: translateY(8px);
  transition: opacity .22s, transform .22s;
  z-index: 4;
}
.player:hover .player-bar, .player.bar-visible .player-bar { opacity: 1; transform: none; }

.pb-btn {
  width: 34px; height: 34px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: #fff; border-radius: 9px;
  transition: background .15s;
}
.pb-btn:hover { background: rgba(255, 255, 255, .14); }
.pb-btn svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pb-btn svg.filled { fill: currentColor; stroke: none; }

.pb-progress { flex: 1; position: relative; height: 22px; display: flex; align-items: center; cursor: pointer; min-width: 60px; }
.pb-track { width: 100%; height: 4px; background: rgba(255, 255, 255, .25); border-radius: 3px; overflow: visible; position: relative; }
.pb-buffered { position: absolute; left: 0; top: 0; bottom: 0; background: rgba(255, 255, 255, .32); border-radius: 3px; }
.pb-played { position: absolute; left: 0; top: 0; bottom: 0; background: var(--accent); border-radius: 3px; }
.pb-knob {
  position: absolute; top: 50%; width: 13px; height: 13px; border-radius: 50%;
  background: #fff; transform: translate(-50%, -50%) scale(0);
  box-shadow: 0 1px 5px rgba(0,0,0,.4);
  transition: transform .15s var(--ease);
  pointer-events: none;
}
.pb-progress:hover .pb-knob, .pb-progress.dragging .pb-knob { transform: translate(-50%, -50%) scale(1); }
.pb-progress:hover .pb-track { height: 6px; }
.pb-track { transition: height .12s; }
.pb-tooltip {
  position: absolute; bottom: 26px; transform: translateX(-50%);
  background: rgba(0, 0, 0, .85); color: #fff;
  font-size: 12px; font-family: var(--mono);
  padding: 3px 8px; border-radius: 6px;
  opacity: 0; pointer-events: none; transition: opacity .12s;
  white-space: nowrap;
}
.pb-progress:hover .pb-tooltip, .pb-progress.dragging .pb-tooltip { opacity: 1; }

.pb-time { color: #fff; font-size: 12.5px; font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.pb-rate {
  background: rgba(255, 255, 255, .12); color: #fff;
  border: none; border-radius: 7px; font-size: 12px; padding: 3px 6px;
  outline: none; cursor: pointer;
}
.pb-rate option { color: #000; }

/* 音量 */
.pb-vol { position: relative; display: flex; align-items: center; }
.pb-vol-slider {
  width: 0; opacity: 0;
  transition: width .2s var(--ease), opacity .2s, margin .2s;
  accent-color: var(--accent); height: 4px;
}
.pb-vol:hover .pb-vol-slider { width: 72px; opacity: 1; margin-left: 2px; }
/* 触屏设备没有 hover：保留静音按钮，隐藏音量滑杆——
   4px 高的滑杆在手机上几乎无法触控，还会把进度条挤到 70px 宽；
   手机音量请用实体按键（YouTube 等主流 App 同款做法） */
@media (hover: none) {
  .pb-vol-slider { display: none; }
  .player-bar { gap: 8px; }
}

/* 图片预览（预览页大图） */
.pv-image { text-align: center; }
.pv-image img { max-width: 100%; max-height: 78vh; margin: 0 auto; border-radius: var(--radius); box-shadow: var(--shadow); }

/* PDF / 文本 */
.pv-embed { width: 100%; height: 78vh; border: none; border-radius: var(--radius); background: var(--card); }
.pv-text {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  font-family: var(--mono); font-size: 13px; line-height: 1.65;
  white-space: pre-wrap; word-break: break-word;
  max-height: 78vh; overflow: auto;
  color: var(--text);
}
.pv-hint { text-align: center; padding: 60px 20px; color: var(--text-3); font-size: 14px; }
.pv-hint .btn { margin-top: 16px; }

/* 文本编辑（可编辑白名单） */
.pv-tools { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.pv-tools .pv-status { color: var(--text-3); font-size: 13px; margin-right: auto; }
.pv-editor {
  width: 100%; min-height: 70vh; resize: vertical;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
  font-family: var(--mono); font-size: 13px; line-height: 1.65;
  color: var(--text); outline: none;
}
.pv-editor:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* ============ 通用对话框（新建文本等） ============ */

.modal {
  position: fixed; inset: 0; z-index: 110;
  background: var(--lb-bg); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-box {
  width: min(560px, 100%); background: var(--bg-soft);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px 24px;
  display: flex; flex-direction: column; gap: 14px;
}
.modal-box h3 { margin: 0; font-size: 16px; color: var(--text); }
.modal-field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text-3); }
.modal-field input, .modal-box textarea {
  font-family: var(--mono); font-size: 13.5px; color: var(--text);
  background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: 9px 12px; outline: none;
}
.modal-box textarea { min-height: 160px; resize: vertical; }
.modal-field input:focus, .modal-box textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.auth-remember { flex-direction: row !important; align-items: center; gap: 8px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }
.modal-error { margin: 0; color: var(--danger); font-size: 13px; }
.session-list { display: flex; flex-direction: column; gap: 8px; max-height: 50vh; overflow: auto; }
.session-row { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }
.session-row .s-meta { margin-right: auto; color: var(--text-3); display: flex; flex-direction: column; gap: 2px; }
.session-row .s-meta b { color: var(--text); font-weight: 600; }
.session-row .s-badge { color: var(--accent); font-size: 12px; }
.auth-hint { color: var(--text-3); font-size: 13px; margin: 0; }
.auth-qr { text-align: center; }
.auth-qr img { width: 200px; height: 200px; background: #fff; border-radius: 8px; padding: 8px; }
.auth-secret { font-family: var(--mono); font-size: 13px; color: var(--text); word-break: break-all; background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; }

/* ============ 灯箱 ============ */

.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: var(--lb-bg);
  backdrop-filter: blur(6px);
  display: flex; flex-direction: column;
  animation: lbFade .22s var(--ease);
}
@keyframes lbFade { from { opacity: 0; } }
.lb-top {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; gap: 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.lb-titles { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.lb-name { font-size: 14.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb-count { font-size: 12.5px; color: var(--text-3); font-family: var(--mono); }
.lb-actions { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }
.lb-zoom { font-size: 12px; color: var(--text-3); font-family: var(--mono); min-width: 44px; text-align: center; }

.lb-stage {
  flex: 1; position: relative;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  padding: 20px;
}
.lb-img-wrap { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }
#lbImg {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 20px 80px rgba(0, 0, 0, .5);
  transition: transform .25s var(--ease), opacity .18s;
  user-select: none;
  cursor: zoom-in;
}
#lbImg.zoomed { cursor: grab; }
#lbImg.loading { opacity: .25; }

.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--card); border: 1px solid var(--border-strong);
  color: var(--text); font-size: 22px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s, transform .15s;
  box-shadow: var(--shadow-sm);
  z-index: 2;
}
.lb-nav:hover { background: var(--accent); color: #fff; }
.lb-nav:active { transform: translateY(-50%) scale(.92); }
.lb-prev { left: 18px; }
.lb-next { right: 18px; }
.lb-nav.disabled { opacity: .28; pointer-events: none; }

/* ============ Toast ============ */

.toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(12px);
  background: var(--card); color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 12px; padding: 11px 18px;
  font-size: 13.5px; box-shadow: var(--shadow);
  z-index: 200; opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .25s var(--ease);
  max-width: 80vw;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: var(--danger); color: var(--danger); }

/* ============ 响应式 ============ */

@media (max-width: 820px) {
  .toolbar { flex-wrap: wrap; height: auto; padding: 10px 12px; row-gap: 8px; }
  .toolbar-main { order: 1; }
  .toolbar-actions { order: 2; width: 100%; justify-content: flex-end; flex-wrap: wrap; row-gap: 8px; }
  /* 搜索框独占一行（100% 且禁止 flex 压缩），按钮组在下一行右对齐，避免挤压与溢出 */
  .searchbox { width: 100%; order: -1; flex: 0 0 100%; }
  .searchbox:focus-within { width: 100%; }
  #main { padding: 14px 12px 50px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); gap: 10px; }
  .skeleton { grid-template-columns: repeat(auto-fill, minmax(112px, 1fr)); gap: 10px; }
  .card-info { padding: 8px 9px 9px; }
  .card-name { font-size: 12.5px; }
  .card-meta { font-size: 11px; }
  .col-time { display: none; }
  .col-size { width: 78px; }
  .lb-nav { width: 38px; height: 38px; }
  .lb-prev { left: 8px; } .lb-next { right: 8px; }
  .player-bar { gap: 7px; padding: 8px 10px 10px; }
  .pb-rate { display: none; }
  .pv-main { padding: 16px 10px 40px; }
}

@media (max-width: 480px) {
  .sort-select { display: none; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(98px, 1fr)); gap: 8px; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}