:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --text: #1b1f24;
  --muted: #5f6b7a;
  --border: #dde1e6;
  --accent: #0b7a5c;
  --accent-contrast: #ffffff;
  --accent-soft: #e3f3ee;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --warn-soft: #fff4e0;
  --input-bg: #ffffff;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #1a1e24;
    --text: #e6e9ed;
    --muted: #9aa4b1;
    --border: #2c323a;
    --accent: #3fbf95;
    --accent-contrast: #0b1512;
    --accent-soft: #15332a;
    --danger: #f97066;
    --danger-soft: #3a1a18;
    --warn-soft: #3a2e14;
    --input-bg: #111418;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

a { color: var(--accent); }

h1, h2, h3 { line-height: 1.3; margin: 0 0 0.5rem; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }

[hidden] { display: none !important; }

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }

/* ---------- 表單 ---------- */

label { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.9rem; }
label .hint { font-weight: 400; color: var(--muted); font-size: 0.85rem; }

input, textarea, select {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.7rem 0.8rem;
  font: inherit;
  font-size: 16px; /* 小於 16px 時 iOS Safari 聚焦會自動放大畫面 */
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

input:focus, textarea:focus, button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

textarea { min-height: 5rem; resize: vertical; }

button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 44px;
  padding: 0.55rem 1rem;
  font: inherit;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
}

button.primary { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); }
button.danger { color: var(--danger); border-color: var(--danger); }
button:disabled { opacity: 0.55; cursor: not-allowed; }
form button[type="submit"] { width: 100%; }

.message { padding: 0.7rem 0.85rem; border-radius: 8px; margin: 0 0 1rem; font-size: 0.95rem; }
.message.error { background: var(--danger-soft); color: var(--danger); }
.message.success { background: var(--accent-soft); color: var(--accent); }
.message.info { background: var(--warn-soft); }

/* ---------- 登入類頁面 ---------- */

body.auth { display: flex; min-height: 100vh; min-height: 100dvh; align-items: flex-start; justify-content: center; padding: 16px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

body.auth .card { width: 100%; max-width: 420px; margin-top: 8vh; }

.links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; margin-top: 1rem; font-size: 0.95rem; }
.links a { padding: 0.35rem 0; }

/* ---------- 主畫面 ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.6rem 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar .brand { font-weight: 700; font-size: 1.05rem; color: var(--text); text-decoration: none; white-space: nowrap; }
.topbar nav { display: flex; align-items: center; gap: 0.5rem; }
.topbar nav .who { color: var(--muted); font-size: 0.9rem; max-width: 10rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar nav button, .topbar nav .button { min-height: 38px; padding: 0.35rem 0.75rem; font-size: 0.9rem; white-space: nowrap; }

@media (max-width: 480px) {
  .topbar nav .who { display: none; }
}

main.container { max-width: 960px; margin: 0 auto; padding: 16px; }
main.container.narrow { max-width: 560px; }

.profile { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1rem; margin: 0; }
.profile dt { color: var(--muted); font-size: 0.9rem; }
.profile dd { margin: 0; overflow-wrap: anywhere; }

.search-box { position: sticky; top: 56px; z-index: 5; background: var(--bg); padding: 0.5rem 0 0.75rem; }
.search-label { font-weight: 400; font-size: 0.875rem; color: var(--muted); margin-bottom: 0.35rem; }
.search-box input { margin-top: 0; padding: 0.85rem 1rem; font-size: 17px; border-radius: 10px; }
.dataset { margin: 0.4rem 0 0; font-size: 0.85rem; color: var(--muted); }

.results { display: grid; gap: 0.75rem; margin-top: 0.5rem; }
.status-line { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0; }

.result h3 { font-size: 1.05rem; margin-bottom: 0.1rem; overflow-wrap: anywhere; }
.result .en { color: var(--muted); font-size: 0.9rem; margin: 0; overflow-wrap: anywhere; }
.result .parent { font-size: 0.9rem; margin: 0.35rem 0 0; overflow-wrap: anywhere; }

.badge {
  display: inline-block;
  padding: 0.05rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--accent);
  vertical-align: middle;
}
.badge.gray { background: var(--bg); color: var(--muted); border: 1px solid var(--border); }
.badge + .badge { margin-left: 0.3rem; }
.badge.warn { background: var(--warn-soft); color: var(--text); }
.badge.danger { background: var(--danger-soft); color: var(--danger); }

.tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0.6rem 0 0; padding: 0; list-style: none; }
.tags li { font-size: 0.8rem; padding: 0.1rem 0.5rem; border-radius: 6px; background: var(--bg); border: 1px solid var(--border); }

.owners { margin: 0.85rem 0 0; display: grid; grid-template-columns: max-content 1fr; gap: 0.45rem 1rem; align-items: baseline; }
.owners dt { font-size: 0.8rem; color: var(--muted); }
.owners dd { margin: 0; overflow-wrap: anywhere; }
.owners-empty { margin: 0.85rem 0 0; color: var(--muted); font-size: 0.9rem; }

@media (min-width: 640px) {
  .owners { grid-template-columns: minmax(9rem, 14rem) 1fr; }
  .card { padding: 1.25rem 1.5rem; }
}

/* ---------- 管理後台 ---------- */

section.panel { margin-bottom: 1.25rem; }
section.panel > h2 { display: flex; align-items: center; gap: 0.5rem; }

.list { display: grid; gap: 0.6rem; margin-top: 0.75rem; }
.item { border: 1px solid var(--border); border-radius: 8px; padding: 0.75rem; background: var(--surface); }
.item .title { font-weight: 600; overflow-wrap: anywhere; }
.item .meta { color: var(--muted); font-size: 0.85rem; overflow-wrap: anywhere; }
.item .reason { font-size: 0.9rem; margin: 0.4rem 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.item .actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.6rem; }
.item .actions button { min-height: 40px; padding: 0.4rem 0.9rem; font-size: 0.9rem; }

.secret {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.6rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  background: var(--warn-soft);
  font-size: 0.9rem;
}
.secret code { font-size: 1.05rem; font-weight: 700; letter-spacing: 0.04em; }

.upload-summary { margin-top: 0.75rem; font-size: 0.95rem; }
.upload-summary ul { margin: 0.25rem 0 0; padding-left: 1.2rem; }

progress { width: 100%; height: 12px; margin-top: 0.75rem; accent-color: var(--accent); }

.file-input input { padding: 0.6rem; }

.filters { display: grid; grid-template-columns: 1fr; gap: 0 0.75rem; margin-top: 0.75rem; }
.filters label { margin-bottom: 0.6rem; font-size: 0.9rem; }
.filter-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: end; margin-bottom: 0.6rem; }
@media (min-width: 640px) {
  .filters { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 管理後台分頁 ---------- */

.tabs { display: flex; gap: 0.25rem; border-bottom: 1px solid var(--border); margin: 0.25rem 0 1rem; overflow-x: auto; overflow-y: hidden; }
.tabs a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.4rem 0.9rem;
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  margin-bottom: -1px;
}
.tabs a:hover { color: var(--text); }
.tabs a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- 稽核日誌 ---------- */

.pager { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem; margin: 0.5rem 0; }
.pager button { min-height: 38px; min-width: 42px; padding: 0.3rem 0.7rem; font-size: 0.9rem; }
.pager .gap { color: var(--muted); padding: 0 0.2rem; }

.audit-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem; }
.audit-table th, .audit-table td { padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.audit-table th { color: var(--muted); font-weight: 600; font-size: 0.8rem; }
.audit-table td.detail { overflow-wrap: anywhere; }
.audit-table td.nowrap, .audit-table .badge { white-space: nowrap; }
.audit-table tbody tr:last-child td { border-bottom: none; }

/* 窄螢幕：每一列變成一張卡片，欄名放在值前面 */
@media (max-width: 719px) {
  .audit-table, .audit-table tbody, .audit-table tr, .audit-table td { display: block; }
  .audit-table { border: none; background: none; }
  .audit-table thead { display: none; }
  .audit-table tr { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 0.4rem 0.2rem; margin-bottom: 0.6rem; }
  .audit-table td { border: none; padding: 0.2rem 0.6rem; }
  .audit-table td.nowrap { white-space: normal; }
  .audit-table td[data-label]::before { content: attr(data-label); display: block; color: var(--muted); font-size: 0.75rem; }
}