/* ============================================================
   THU SDGs Detector — 學術工作台設計系統
   深墨綠單一強調色 + 米白紙感背景 + 細線分節
   ============================================================ */

:root {
  --accent:       #1a4a3a;
  --accent-deep:  #235c48;
  --accent-soft:  #e8f0ec;
  --accent-line:  #c5d9cf;
  --paper:        #fbfcfa;
  --paper-raise:  #fff;
  --ink:          #1c2b24;
  --ink-soft:     #3d4f45;
  --ink-faint:    #7d8a82;
  --line:         #e3e8e4;
  --line-strong:  #cfd8d2;
  --hit:          #e0efe5;
  --hit-ink:      #1a4a3a;
  --warn:         #f6efdc;
  --warn-ink:     #7a5a14;
  --bad:          #f7e4e1;
  --bad-ink:      #8a2d20;
  --radius:       8px;
  --serif: 'Noto Serif TC', Georgia, serif;
  --sans:  'Inter', 'Noto Sans TC', system-ui, sans-serif;
  --mono:  'SF Mono', ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: .925rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { font-family: var(--serif); color: var(--ink); line-height: 1.3; }

code { font-family: var(--mono); }

/* ---------------- navbar ---------------- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 252, 250, .88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: .65rem 2rem;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }

.brand-mark {
  font-family: var(--serif);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: #fff;
  background: var(--accent);
  padding: .35rem .55rem;
  border-radius: 4px;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: .92rem; font-family: var(--serif); color: var(--ink); }
.brand-text small { font-size: .68rem; color: var(--ink-faint); letter-spacing: .02em; }

.nav-links { display: flex; gap: 1.4rem; margin-left: auto; }
.nav-links a {
  font-size: .85rem;
  color: var(--ink-soft);
  padding: .3rem .1rem;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.nav-user { display: flex; align-items: center; gap: .7rem; }
.user-badge {
  font-size: .78rem;
  color: var(--accent);
  background: var(--accent-soft);
  padding: .22rem .7rem;
  border-radius: 999px;
  font-weight: 600;
}
.inline-form { display: inline; }

/* ---------------- 頁面骨架 ---------------- */

.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

.page-head { margin-bottom: 1.8rem; }
.page-head h1 { font-size: 1.65rem; margin: 0 0 .3rem; }
.lede { color: var(--ink-faint); font-size: .88rem; margin: 0; max-width: 75ch; }

.cols {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 1000px) { .cols { grid-template-columns: 1fr; } }

.section {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1.5rem;
}

.section h2 {
  font-size: 1.05rem;
  margin: 0 0 1rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--line);
}
.count {
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 500;
  color: var(--ink-faint);
  margin-left: .6rem;
}

.aside { position: sticky; top: 4.5rem; }
@media (max-width: 1000px) { .aside { position: static; } }

.panel {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin-bottom: 1.1rem;
}
.panel h3 {
  font-size: .9rem;
  margin: 0 0 .7rem;
  color: var(--accent);
}

.kv {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: .8rem;
  padding: .28rem 0;
  border-bottom: 1px dashed var(--line);
}
.kv:last-child { border-bottom: none; }
.kv .k { color: var(--ink-faint); }
.kv .v { color: var(--ink-soft); font-weight: 500; text-align: right; }
.kv .v.acc { color: var(--accent); font-weight: 600; }

.note {
  font-size: .78rem;
  color: var(--ink-faint);
  line-height: 1.6;
}

/* ---------------- 表單 ---------------- */

input[type=text], input[type=password], textarea, select {
  font-family: var(--sans);
  font-size: .875rem;
  color: var(--ink);
  background: var(--paper-raise);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: .55rem .7rem;
  width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { resize: vertical; }

.field { display: block; margin-bottom: .9rem; }
.cap {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: .35rem;
  letter-spacing: .02em;
}
.cap .en { font-weight: 400; color: var(--ink-faint); }

/* 輸入框高度：摘要長文 / 關鍵字中 / 預設 */
textarea.tall { min-height: 11rem; line-height: 1.7; }
textarea.mid  { min-height: 5.5rem; line-height: 1.7; }

.form-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 2rem; }
@media (max-width: 800px) { .form-grid2 { grid-template-columns: 1fr; } }

.lang-head {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  margin-bottom: .8rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--line);
}
.lang-head h3 { font-size: .95rem; font-family: var(--serif); }
.lang-head small { color: var(--ink-faint); font-size: .75rem; }

/* 中文欄翻譯按鈕：靠右對齊，指示「翻到右欄」 */
.translate-btn { margin-left: auto; display: inline-flex; align-items: center; gap: .35rem; }
.translate-btn svg { width: 13px; height: 13px; }
.hint-inline { font-size: .78rem; color: var(--ink-faint); }

/* ---------------- 按鈕 ---------------- */

button, .btn {
  font-family: var(--sans);
  font-size: .875rem;
  font-weight: 500;
  padding: .5rem 1.3rem;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
button:hover, .btn:hover { background: var(--accent-deep); color: #fff; text-decoration: none; }
button:active { transform: translateY(1px); }

.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-line); }

.btn-sm { padding: .3rem .8rem; font-size: .8rem; }

.btn-row { display: flex; gap: 1.5rem; align-items: center; margin-top: 1.2rem; flex-wrap: wrap; }

.check-row { display: flex; gap: 2rem; flex-wrap: wrap; margin-top: 1.2rem; }
.check-row label {
  display: flex;
  align-items: center;
  gap: .45rem;
  font-size: .85rem;
  color: var(--ink-soft);
  cursor: pointer;
}
.check-row input[type=checkbox] { accent-color: var(--accent); width: 15px; height: 15px; }

/* ---------------- 表格 ---------------- */

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: .84rem;
}
table.data th {
  text-align: left;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--ink-faint);
  text-transform: uppercase;
  padding: .5rem .7rem;
  border-bottom: 2px solid var(--line-strong);
}
table.data td {
  padding: .55rem .7rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data tbody tr:hover { background: rgba(232, 240, 236, .45); }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data tr.hit-row { background: var(--hit); }
table.data tr.hit-row:hover { background: #dfeee3; }
table.data tr.mute td { color: var(--ink-faint); }

/* ---------------- 狀態標記 ---------------- */

.tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  padding: .12rem .55rem;
  border-radius: 999px;
  letter-spacing: .02em;
}
.tag-yes   { background: var(--hit); color: var(--hit-ink); }
.tag-no    { color: var(--ink-faint); background: transparent; }
.tag-rec   { background: var(--hit); color: var(--hit-ink); }
.tag-rev   { background: var(--warn); color: var(--warn-ink); }
.tag-ign   { background: var(--line); color: var(--ink-faint); }
.tag-conflict { background: var(--bad); color: var(--bad-ink); }
.tag-rule  { background: #eaf1f8; color: #1e4a7a; }
.tag-thu   { background: #f6efe3; color: #7a5a14; }
.tag-llm   { background: var(--hit); color: var(--hit-ink); }

.evidence { font-size: .78rem; color: var(--ink-soft); margin: .3rem 0 0; padding: 0; list-style: none; }
.evidence li { padding: .1rem 0 .1rem 1rem; position: relative; }
.evidence li::before { content: '—'; position: absolute; left: 0; color: var(--accent-line); }
.evidence code {
  font-family: var(--mono);
  font-size: .75rem;
  background: var(--accent-soft);
  padding: .08rem .3rem;
  border-radius: 3px;
}

details.ev { margin-top: .25rem; }
details.ev summary {
  cursor: pointer;
  font-size: .75rem;
  color: var(--accent);
  user-select: none;
}
details.ev summary:hover { text-decoration: underline; }

/* ---------------- 補強建議卡片 ---------------- */

.suggest {
  border-left: 3px solid var(--accent-line);
  padding: .8rem 1.1rem;
  margin-bottom: 1rem;
  background: var(--paper);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.suggest h4 { font-size: .9rem; margin: 0 0 .5rem; color: var(--accent); }
.suggest p { font-size: .82rem; margin: .25rem 0; color: var(--ink-soft); }

.terms { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .5rem; }
.terms code {
  font-size: .74rem;
  background: var(--accent-soft);
  color: var(--accent);
  padding: .15rem .5rem;
  border-radius: 999px;
}

/* ---------------- flash 訊息 ---------------- */

.flash { padding: .7rem 1rem; border-radius: 6px; font-size: .85rem; margin-bottom: 1.2rem; }
.flash-err { background: var(--bad); color: var(--bad-ink); border: 1px solid #eec7c2; }
.flash-info { background: var(--warn); color: var(--warn-ink); border: 1px solid #eadfc2; }

/* ---------------- 登入頁 ---------------- */

.login-wrap { max-width: 380px; margin: 4rem auto; }
.login-wrap h1 { font-size: 1.4rem; margin-bottom: .4rem; }
.login-wrap .lede { color: var(--ink-soft); font-size: .85rem; margin-bottom: 1.5rem; }

/* ---------------- 論文草稿工具列（detect 頁） ---------------- */

.draft-bar {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
  padding: .7rem .9rem;
  margin-bottom: 1.2rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
}

.draft-label {
  font-family: var(--serif);
  font-size: .85rem;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

.draft-select {
  width: auto;
  min-width: 14rem;
  max-width: 24rem;
  padding: .3rem .5rem;
  font-size: .82rem;
  background: var(--paper-raise);
}

.draft-bar .btn-ghost { white-space: nowrap; }
.draft-bar .btn-ghost:disabled { opacity: .45; cursor: not-allowed; }

.draft-del:hover {
  background: var(--bad);
  color: var(--bad-ink);
  border-color: #eec7c2;
}

.draft-status {
  font-size: .75rem;
  color: var(--accent);
  min-width: 0;
  flex: 1;
}

@media (max-width: 800px) {
  .draft-select { min-width: 0; flex: 1 1 100%; }
}

/* ---------------- 詞庫查詢（keywords 頁） ---------------- */

.kw-search {
  display: flex;
  gap: 1rem;
  align-items: flex-end;
  flex-wrap: wrap;
}
.kw-search .field { min-width: 0; }
.kw-search select { padding: .45rem .5rem; }

.kw-term {
  font-family: var(--mono);
  font-size: .8rem;
  background: var(--accent-soft);
  padding: .15rem .45rem;
  border-radius: 4px;
  display: inline-block;
}

.pager {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1rem;
}
.pager-info { font-size: .8rem; color: var(--ink-faint); }

@media (max-width: 800px) {
  .kw-search .field { flex: 1 1 100% !important; }
}

/* ---------------- 頁尾 ---------------- */

.site-foot {
  border-top: 1px solid var(--line);
  background: var(--paper-raise);
  margin-top: 2rem;
}
.foot-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.1rem 2rem;
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  font-size: .72rem;
  color: var(--ink-faint);
}