/* ---------- 主题变量 ---------- */
:root {
  --bg: #f2f4f8;
  --card: #ffffff;
  --card-2: #f6f8fb;
  --border: #e3e7ee;
  --text: #191f28;
  --muted: #6c7686;
  --accent: #4c6ef5;
  --accent-ink: #ffffff;
  --accent-weak: rgba(76, 110, 245, .1);
  --ok: #12855f;
  --ok-weak: rgba(18, 133, 95, .1);
  --danger: #cf3f3f;
  --danger-weak: rgba(207, 63, 63, .1);
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 10px 28px rgba(16, 24, 40, .06);
  --radius: 18px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1016;
    --card: #161a22;
    --card-2: #1c2129;
    --border: #272e39;
    --text: #e8ecf3;
    --muted: #96a0b0;
    --accent: #7f97ff;
    --accent-ink: #101321;
    --accent-weak: rgba(127, 151, 255, .14);
    --ok: #4ecfa2;
    --ok-weak: rgba(78, 207, 162, .12);
    --danger: #ff8080;
    --danger-weak: rgba(255, 128, 128, .12);
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .32);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0d1016;
  --card: #161a22;
  --card-2: #1c2129;
  --border: #272e39;
  --text: #e8ecf3;
  --muted: #96a0b0;
  --accent: #7f97ff;
  --accent-ink: #101321;
  --accent-weak: rgba(127, 151, 255, .14);
  --ok: #4ecfa2;
  --ok-weak: rgba(78, 207, 162, .12);
  --danger: #ff8080;
  --danger-weak: rgba(255, 128, 128, .12);
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .32);
  color-scheme: dark;
}

/* ---------- 基础 ---------- */
* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  transition: background-color .2s ease, color .2s ease;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 18px 16px calc(28px + env(safe-area-inset-bottom));
}

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 4px 2px 18px;
}

.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }

.logo { width: 42px; height: 42px; display: block; flex: none; }

.brand-text { min-width: 0; }

.brand h1 {
  margin: 0;
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -.01em;
}

.brand p {
  margin: 1px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.icon-btn {
  flex: none;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  transition: background-color .15s ease, transform .1s ease;
}
.icon-btn:active { transform: scale(.95); }
.icon-btn:hover { background: var(--card-2); }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.settings {
  margin-bottom: 16px;
  padding: 16px 18px;
}

.settings .field { max-width: 100%; }

@media (min-width: 560px) {
  .settings .field { max-width: 300px; }
}

/* ---------- 表单 ---------- */
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }

.field > label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: .01em;
}

.hint {
  font-weight: 400;
  font-size: 11.5px;
  padding: 1px 6px;
  margin-left: 4px;
  border-radius: 5px;
  background: var(--card-2);
  color: var(--muted);
  border: 1px solid var(--border);
}

input[type="text"], input[type="url"] {
  width: 100%;
  height: 46px;
  padding: 0 13px;
  font: inherit;
  font-size: 16px;
  color: var(--text);
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
}

input::placeholder { color: var(--muted); opacity: .7; }

input[type="text"]:focus, input[type="url"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
  background: var(--card);
}

input.is-invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-weak);
}

.field-tip {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 标签页 ---------- */
.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  padding: 4px;
  margin-bottom: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  padding: 10px 4px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}

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

.tab.is-active {
  background: var(--accent);
  color: var(--accent-ink);
}

/* ---------- 面板 ---------- */
.panel { display: none; }
.panel.is-active { display: block; animation: fade .18s ease both; }

@keyframes fade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.panel .card { padding: 18px 18px 20px; }

.panel .field + .field { margin-top: 16px; }
.panel .btn { margin-top: 18px; }

/* ---------- 拖拽选择 ---------- */
.drop {
  display: block;
  border: 1.5px dashed var(--border);
  border-radius: 14px;
  background: var(--card-2);
  cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease;
}

.drop:hover, .drop.is-over {
  border-color: var(--accent);
  background: var(--accent-weak);
}

.drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 22px 16px;
  text-align: center;
  color: var(--muted);
}

.drop-inner svg { color: var(--accent); }
.drop-inner span { font-size: 14.5px; color: var(--text); font-weight: 550; }
.drop-inner small { font-size: 12px; color: var(--muted); }

/* ---------- 文件列表 ---------- */
.chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 0;
  padding: 0;
}

.chips:empty { margin: 0; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 6px 6px 6px 11px;
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 13px;
}

.chip-name {
  max-width: 190px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chip-size { color: var(--muted); font-size: 11.5px; flex: none; }

.chip-x {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}
.chip-x:hover { background: var(--danger-weak); color: var(--danger); }

/* ---------- 按钮 ---------- */
.btn {
  width: 100%;
  height: 48px;
  border: 1px solid transparent;
  border-radius: 13px;
  font: inherit;
  font-size: 15.5px;
  font-weight: 650;
  cursor: pointer;
  transition: filter .15s ease, transform .1s ease, opacity .15s ease;
}

.btn:active:not(:disabled) { transform: scale(.99); }
.btn:disabled { opacity: .6; cursor: default; }

.btn.primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn.primary:hover:not(:disabled) { filter: brightness(1.05); }

.btn.ghost {
  background: var(--card-2);
  border-color: var(--border);
  color: var(--text);
}
.btn.ghost:hover:not(:disabled) { background: var(--card); }

.btn.small { width: auto; height: 38px; padding: 0 15px; font-size: 13.5px; border-radius: 10px; }

.btn-loading::after {
  content: "";
  display: inline-block;
  width: 13px;
  height: 13px;
  margin-left: 8px;
  vertical-align: -1px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 1.4s cubic-bezier(.45, .1, .55, .9) infinite;
}

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

/* ---------- 结果 ---------- */
.result { margin-top: 16px; }

.result-block { margin-top: 16px; }

.result-card {
  border: 1px solid var(--border);
  background: var(--card-2);
  border-radius: 14px;
  padding: 15px 16px;
}

.result-card.ok { border-color: color-mix(in srgb, var(--ok) 30%, var(--border)); background: var(--ok-weak); }
.result-card.err { border-color: color-mix(in srgb, var(--danger) 30%, var(--border)); background: var(--danger-weak); }

.result-label {
  font-size: 12px;
  font-weight: 650;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 8px;
}

.tag-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.tag-value {
  flex: 1 1 160px;
  min-width: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: .01em;
  word-break: break-all;
  user-select: all;
}

.result-msg { margin: 0; font-size: 14px; word-break: break-word; }
.result-msg.err { color: var(--danger); }
.result-msg.ok { color: var(--ok); }

.result-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

/* ---------- 文件网格 ---------- */
.grid-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.grid-head h2 { margin: 0; font-size: 15px; font-weight: 650; }
.grid-head span { font-size: 12.5px; color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 10px;
}

.item {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--card);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color .15s ease, transform .12s ease;
}

.item:hover { border-color: var(--accent); transform: translateY(-1px); }

.item.thumbs { position: relative; cursor: zoom-in; outline: none; }

.item.thumbs:focus-visible { box-shadow: 0 0 0 3px var(--accent-weak); }

.thumb {
  aspect-ratio: 1 / 1;
  width: 100%;
  display: block;
  object-fit: cover;
  background: var(--card-2);
}

.item video {
  width: 100%;
  aspect-ratio: 16 / 10;
  display: block;
  object-fit: contain;
  background: #000;
}

.item .cap {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  min-width: 0;
}

.item .cap b {
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.item.file-card {
  flex-direction: row;
  align-items: center;
  gap: 11px;
  padding: 13px;
  grid-column: 1 / -1;
}

.file-card .fico {
  flex: none;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--accent-weak);
  color: var(--accent);
}

.file-card .fmeta { min-width: 0; flex: 1; }
.file-card .fname {
  font-size: 13.5px;
  font-weight: 550;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-card .fext { font-size: 11.5px; color: var(--muted); }

/* ---------- 空状态 / 占位 ---------- */
.placeholder { text-align: center; padding: 34px 22px; }

.ph-icon {
  width: 46px;
  height: 46px;
  margin: 0 auto 12px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--accent-weak);
  color: var(--accent);
}

.placeholder h2 { margin: 0 0 6px; font-size: 17px; font-weight: 650; }
.placeholder p { margin: 4px 0; font-size: 14px; }
.placeholder .muted { color: var(--muted); font-size: 13px; }

.empty {
  text-align: center;
  padding: 34px 16px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  color: var(--muted);
  font-size: 14px;
  background: var(--card);
}

.skeleton {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 10px;
}

.sk {
  border-radius: 13px;
  background: linear-gradient(90deg, var(--card-2) 25%, var(--border) 37%, var(--card-2) 63%);
  background-size: 400% 100%;
  animation: shimmer 2.4s ease-in-out infinite;
  aspect-ratio: 1 / 1;
}

@keyframes shimmer {
  0% { background-position: 100% 50%; }
  50% { background-position: 0 50%; }
  100% { background-position: 100% 50%; }
}

/* ---------- 页脚 / 轻提示 ---------- */
.foot {
  margin-top: 26px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom));
  transform: translate(-50%, 14px);
  max-width: min(90vw, 420px);
  padding: 11px 16px;
  border-radius: 12px;
  background: var(--text);
  color: var(--bg);
  font-size: 13.5px;
  line-height: 1.45;
  box-shadow: 0 8px 26px rgba(0, 0, 0, .22);
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 50;
  word-break: break-word;
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--danger); color: #fff; }

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

/* ---------- 全部数据：用户 / 标签 ---------- */
.user-block {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  overflow: hidden;
  margin-bottom: 12px;
}

.user-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 16px;
  background: var(--card-2);
  border-bottom: 1px solid var(--border);
}

.user-head h3 {
  margin: 0;
  font-size: 14.5px;
  font-weight: 650;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-head span { flex: none; font-size: 12px; color: var(--muted); }

.user-empty { padding: 14px 16px; font-size: 13px; color: var(--muted); }

.tag-list { list-style: none; margin: 0; padding: 0; }

.tag-item + .tag-item { border-top: 1px solid var(--border); }

.tag-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  border: 0;
  background: transparent;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.tag-row:hover { background: var(--card-2); }

.tag-name {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tag-count { flex: none; font-size: 12px; color: var(--muted); }

.chev { flex: none; color: var(--muted); display: grid; place-items: center; transition: transform .18s ease; }

.tag-row[aria-expanded="true"] .chev { transform: rotate(180deg); }

.tag-files { padding: 0 16px 16px; }

.tag-files-bar { display: flex; gap: 8px; padding: 2px 0 10px; }

.grid-compact { grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); gap: 8px; }

.mini-empty { font-size: 13px; color: var(--muted); padding: 4px 0 2px; }

/* ---------- 图片查看器 ---------- */
body.lb-open { overflow: hidden; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  background: rgba(8, 10, 14, .95);
  animation: lbIn .16s ease both;
}

.lightbox[hidden] { display: none; }

@keyframes lbIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.lb-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: calc(10px + env(safe-area-inset-top)) 14px 10px;
  color: #fff;
}

.lb-name {
  flex: 1;
  min-width: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, .78);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lb-tools { display: flex; gap: 6px; flex: none; }

.lb-btn {
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .08);
  color: #fff;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.lb-btn:hover { background: rgba(255, 255, 255, .18); }
.lb-btn:active { transform: scale(.96); }

.lb-reset { font-size: 12px; letter-spacing: .02em; }
.lb-link { font-size: 12.5px; }

.lb-stage {
  flex: 1;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 0 12px calc(12px + env(safe-area-inset-bottom));
  touch-action: none;
  position: relative;
}

.lb-stage img {
  max-width: 100%;
  max-height: 100%;
  display: block;
  transform-origin: center center;
  will-change: transform;
  user-select: none;
  -webkit-user-drag: none;
  cursor: zoom-in;
}

/* 移动端工具条稍微紧凑 */
@media (max-width: 420px) {
  .lb-bar { gap: 8px; padding-left: 10px; padding-right: 10px; }
  .lb-btn { min-width: 34px; height: 34px; padding: 0 8px; font-size: 16px; }
  .lb-link { padding: 0 6px; font-size: 12px; }
}