:root {
  --bg: #f6f6f7;
  --card: #ffffff;
  --line: #e4e4e8;
  --line-soft: #efeff2;
  --text: #1b1b1f;
  --muted: #6d6d76;
  --faint: #9a9aa4;
  --accent: #c2410c;
  --accent-soft: #fff3ed;
  --blue: #1d4ed8;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
        "PingFang SC", "Hiragino Sans GB", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

/* ---------------------------------------------------------------- top bar */
.top {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.back, .brand-sm { font-size: 14px; color: var(--muted); font-weight: 500; }
.back:hover { color: var(--text); }
.brand-sm { color: var(--text); font-weight: 600; letter-spacing: .2px; }
.who { font-size: 13px; color: var(--muted); cursor: pointer; }
.top-right { display: flex; align-items: center; gap: 14px; }
.admin-link {
  font-size: 13px; color: var(--accent); padding: 4px 10px;
  border: 1px solid #f0d5c7; border-radius: 7px; background: var(--accent-soft);
}
.admin-link:hover { background: #ffe9dd; }
.admin-link[hidden] { display: none; }
.acct-link { font-size: 13px; color: var(--muted); }
.acct-link:hover { color: var(--text); }

main { max-width: 900px; margin: 0 auto; padding: 24px 20px 64px; }

/* ---------------------------------------------------------------- heading */
.head { margin-bottom: 20px; }
.head h1 { font-size: 22px; line-height: 1.3; margin: 0 0 4px; font-weight: 650; }
.head .sub { color: var(--muted); font-size: 14px; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; align-items: center; }
.pill {
  font-size: 12px; padding: 2px 9px; border-radius: 999px;
  background: var(--line-soft); color: var(--muted); white-space: nowrap;
}
.pill-red { background: #fdecec; color: #b91c1c; }
.pill-ok { background: #eaf6ee; color: #15803d; }
.pill-warn { background: #fff7e6; color: #b45309; }

/* ---------------------------------------------------------------- drop zone */
.drop {
  background: var(--card);
  border: 1.5px dashed #d3d3d9;
  border-radius: var(--radius);
  padding: 22px;
  text-align: center;
  transition: border-color .15s, background .15s;
  margin-bottom: 14px;
}
.drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop-inner { cursor: pointer; }
.drop-icon {
  width: 34px; height: 34px; line-height: 32px; margin: 0 auto 6px;
  border-radius: 50%; border: 1.5px solid #d3d3d9; color: var(--faint);
  font-size: 20px;
}
.drop.over .drop-icon { border-color: var(--accent); color: var(--accent); }
.drop-text { font-size: 14px; color: var(--muted); }
.drop-text b { color: var(--text); font-weight: 600; }
.drop-text .link { color: var(--accent); text-decoration: underline; margin-left: 2px; }
.drop-note { font-size: 12px; color: var(--faint); margin-top: 6px; }
.drop-adv {
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;
  margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line-soft);
  font-size: 12.5px; color: var(--muted);
}
.drop-adv label { display: flex; align-items: center; gap: 6px; }
.drop-adv select, .drop-adv input {
  font: inherit; font-size: 12.5px; padding: 4px 8px;
  border: 1px solid var(--line); border-radius: 7px; background: #fff; color: var(--text);
  max-width: 260px;
}
.note-label input { width: 190px; }
.upload-log { margin-top: 10px; font-size: 12.5px; color: var(--muted); text-align: left; }
.upload-log div { padding: 3px 0; }
.upload-log .err { color: #b91c1c; }

.usage {
  font-size: 12.5px; color: var(--faint); margin: 0 0 18px;
  display: flex; align-items: center; gap: 10px;
}
.bar { flex: 1; max-width: 180px; height: 4px; background: var(--line-soft); border-radius: 2px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); border-radius: 2px; }

/* ---------------------------------------------------------------- file list */
.list { display: flex; flex-direction: column; gap: 12px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  scroll-margin-top: 70px;
  transition: box-shadow .2s, border-color .2s;
}
.card.flash { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

/* image card — 图片直接显示，不需要先点 */
.card-img img {
  display: block; width: 100%; max-height: 420px; object-fit: contain;
  background: #f1f1f3; cursor: zoom-in;
}
.card-img .cap { padding: 10px 14px; }

/* doc card */
.card-doc { display: flex; align-items: center; gap: 14px; padding: 14px; }
.ico {
  flex: 0 0 40px; width: 40px; height: 40px; border-radius: 9px;
  display: grid; place-items: center; font-size: 11px; font-weight: 700;
  background: var(--line-soft); color: var(--muted); text-transform: uppercase;
}
.ico.xls, .ico.xlsx, .ico.csv { background: #e8f5ec; color: #157347; }
.ico.pdf { background: #fdecec; color: #b91c1c; }
.ico.zip { background: #f2eefb; color: #6d28d9; }
.ico.ppt, .ico.pptx { background: #fdeee6; color: #c2410c; }
.doc-main { flex: 1; min-width: 0; }
.fname {
  font-size: 14.5px; font-weight: 550; word-break: break-all;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.fmeta { font-size: 12.5px; color: var(--faint); margin-top: 3px; }
.fnote { font-size: 12.5px; color: var(--muted); margin-top: 4px; font-style: italic; }
.dl {
  flex: 0 0 auto; font-size: 13px; color: var(--accent); padding: 6px 10px;
  border-radius: 8px; border: 1px solid var(--line);
}
.dl:hover { background: var(--accent-soft); border-color: var(--accent); }

/* 译本配对 */
.chip-pair {
  font-size: 11.5px; padding: 1px 8px; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent); border: 1px solid #f7d9c9;
  cursor: pointer; white-space: nowrap;
}
.chip-pair:hover { background: #ffe9dd; }
.chip-pair.muted { background: var(--line-soft); color: var(--muted); border-color: var(--line); }

.empty { text-align: center; color: var(--faint); font-size: 14px; padding: 40px 0; }
.foot { margin-top: 36px; font-size: 12px; color: var(--faint); text-align: center; }

/* ---------------------------------------------------------------- lightbox */
.lb {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(12, 12, 14, .94);
  display: flex; align-items: center; justify-content: center;
}
.lb[hidden] { display: none; }
.lb-fig { margin: 0; max-width: 92vw; max-height: 92vh; text-align: center; }
.lb-fig img { max-width: 92vw; max-height: 84vh; object-fit: contain; border-radius: 6px; }
.lb-fig figcaption { color: #cfcfd6; font-size: 13px; margin-top: 10px; }
.lb-close {
  position: absolute; top: 16px; right: 18px;
  background: none; border: none; color: #e8e8ee; font-size: 26px; cursor: pointer; padding: 6px;
}
.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255, 255, 255, .1); border: none; color: #fff;
  width: 46px; height: 46px; border-radius: 50%; font-size: 26px; line-height: 1;
  cursor: pointer;
}
.lb-nav:hover { background: rgba(255, 255, 255, .2); }
.lb-prev { left: 14px; } .lb-next { right: 14px; }

/* ---------------------------------------------------------------- login */
.login-body { display: grid; place-items: center; min-height: 100vh; background: var(--bg); }
.login-card {
  width: 340px; max-width: 92vw; background: var(--card);
  border: 1px solid var(--line); border-radius: 16px; padding: 26px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .05);
}
.login-card .brand { font-size: 12px; letter-spacing: .5px; color: var(--faint); text-transform: uppercase; }
.login-card h1 { font-size: 20px; margin: 6px 0 4px; }
.login-hint { font-size: 13px; color: var(--muted); margin: 0 0 18px; }
.login-card label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.login-card input {
  display: block; width: 100%; margin-top: 5px; padding: 9px 11px;
  font: inherit; font-size: 14px; border: 1px solid var(--line); border-radius: 9px;
}
.login-card input:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.login-card button {
  width: 100%; margin-top: 6px; padding: 10px; font: inherit; font-weight: 600;
  color: #fff; background: var(--accent); border: none; border-radius: 9px; cursor: pointer;
}
.login-card button:hover { background: #a93a0a; }
.login-err { color: #b91c1c; font-size: 13px; margin-top: 12px; min-height: 18px; }

/* ---------------------------------------------------------------- index list */
.tb { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.tb input {
  flex: 1; padding: 9px 12px; font: inherit; font-size: 14px;
  border: 1px solid var(--line); border-radius: 9px; background: #fff;
}
.tb .count { font-size: 12.5px; color: var(--faint); white-space: nowrap; }
.row-task {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px;
}
.row-task:hover { border-color: #cfcfd6; }
.rt-main { flex: 1; min-width: 0; }
.rt-name { font-size: 14.5px; font-weight: 550; }
.rt-en { font-size: 12.5px; color: var(--faint); margin-top: 2px; }
.rt-side { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.rt-count, .rt-date { font-size: 12.5px; color: var(--faint); white-space: nowrap; }

/* ---------------------------------------------------------------- mobile */
@media (max-width: 640px) {
  main { padding: 16px 12px 48px; }
  .head h1 { font-size: 18px; }
  .drop { padding: 18px 14px; }
  .drop-adv { flex-direction: column; align-items: stretch; gap: 10px; }
  .drop-adv label { justify-content: space-between; }
  .drop-adv select, .note-label input { flex: 1; max-width: none; width: auto; }
  .card-img img { max-height: 240px; }
  .card-doc { gap: 10px; padding: 12px; }
  .ico { flex-basis: 32px; width: 32px; height: 32px; font-size: 10px; }
  .fname { font-size: 14px; }
  .dl { padding: 8px 12px; }
  .rt-en, .rt-date { display: none; }
  .lb-nav { width: 40px; height: 40px; font-size: 22px; }
}