/* Wisdom & Faith — Phase 5 UI. Minimal, responsive, no heavy deps. */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f7f5f0;
  --card: #ffffff;
  --ink: #2b2b2b;
  --muted: #6b6b6b;
  --line: #e3ded5;
  --accent: #5b4a8a;   /* tím ôn hòa */
  --accent2: #a8572e;  /* nâu đất */
  --ok: #2e7d32;
  --warn: #b26a00;
  --err: #b3261e;
  --radius: 12px;
}

html, body { height: 100%; }
body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  display: flex; flex-direction: column;
}

/* ── Top bar ── */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 10px 16px;
  display: flex; align-items: center; gap: 14px;
  flex-wrap: wrap;
  position: sticky; top: 0; z-index: 10;
}
.brand { font-size: 1.15rem; font-weight: 700; color: var(--accent); white-space: nowrap; }
#main-nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
.nav-btn {
  background: none; border: none; cursor: pointer;
  padding: 7px 12px; border-radius: 8px; font-size: 0.92rem;
  color: var(--ink);
}
.nav-btn:hover { background: #eee9e0; }
.nav-btn.active { background: var(--accent); color: #fff; font-weight: 600; }
.nav-btn.disabled { color: var(--muted); cursor: not-allowed; opacity: .6; }
#lang-switch { border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; background: #fff; }

main { flex: 1; width: 100%; max-width: 1000px; margin: 0 auto; padding: 22px 16px 40px; }
footer { text-align: center; color: var(--muted); font-size: .8rem; padding: 14px; border-top: 1px solid var(--line); background: var(--card); }

.page { display: none; }
.page.active { display: block; }
h1 { font-size: 1.7rem; margin-bottom: 6px; color: var(--ink); }
.subtitle { color: var(--muted); margin-bottom: 18px; font-size: .98rem; }
.page-head { margin-bottom: 14px; }

/* ── Cards (Home) ── */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; margin: 18px 0; }
.card {
  display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; cursor: pointer;
  text-decoration: none; color: var(--ink);
  transition: transform .08s ease, box-shadow .08s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.07); }
.card-disabled { cursor: not-allowed; opacity: .75; }
.card-icon { font-size: 1.9rem; margin-bottom: 8px; }
.card h2 { font-size: 1.15rem; margin-bottom: 6px; }
.card p { color: var(--muted); font-size: .92rem; }
.soon { color: var(--warn); font-weight: 600; }
.disclaimer { color: var(--muted); font-size: .85rem; margin-top: 10px; font-style: italic; }

/* ── Query form ── */
.query-form {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 14px; margin-bottom: 18px;
}
textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 8px;
  padding: 10px; font-size: 1rem; font-family: inherit; resize: vertical;
}
textarea:focus, select:focus { outline: 2px solid #c9bde0; }
.form-row { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; align-items: center; }
select {
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
  background: #fff; font-size: .95rem; flex: 0 1 auto;
}
.ask-btn {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 9px 22px; font-size: 1rem; cursor: pointer; font-weight: 600;
  margin-left: auto;
}
.ask-btn:hover { background: #4c3c77; }
.ask-btn:disabled { opacity: .6; cursor: wait; }

/* ── Result area ── */
.result-area { margin-top: 6px; }
.result-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.result-head h3 { font-size: 1.05rem; }
.tag-domain { font-size: .78rem; background: #ece7f7; color: var(--accent); padding: 3px 9px; border-radius: 20px; font-weight: 600; }
.tag-trad { font-size: .78rem; background: #f5e9e0; color: var(--accent2); padding: 3px 9px; border-radius: 20px; font-weight: 600; }
.answer-box {
  background: #fdfaf4; border: 1px solid var(--line); border-left: 4px solid var(--accent);
  padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; font-size: .97rem;
}
.answer-box .a-label { font-weight: 700; color: var(--accent); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 6px; }
.sources-label { font-weight: 700; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; margin: 14px 0 8px; }

.source-card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 14px; margin-bottom: 10px;
}
.sc-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sc-citation { font-weight: 700; font-size: 1.02rem; }
.sc-pill { font-size: .76rem; padding: 2px 8px; border-radius: 20px; }
.pill-trad { background: #ece7f7; color: var(--accent); }
.pill-type { background: #e8f0e8; color: var(--ok); }
.pill-lang { background: #e7edf3; color: #34506b; }
.sc-text { margin-top: 8px; color: #333; font-size: .94rem; white-space: pre-wrap; max-height: 220px; overflow-y: auto; border-left: 3px solid var(--line); padding-left: 10px; }
.sc-detail { margin-top: 8px; font-size: .85rem; color: var(--muted); display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; }
.sc-detail b { font-weight: 600; }
.cite-toggle { background: none; border: none; color: var(--accent); cursor: pointer; font-size: .85rem; padding: 0; text-decoration: underline; }
.cite-body { display: none; margin-top: 8px; }
.cite-body.open { display: grid; }
.sc-url { color: var(--accent); word-break: break-all; }

/* ── States ── */
.state { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin: 10px 0; }
.state h4 { margin-bottom: 6px; }
.state-empty { border-left: 4px solid var(--warn); }
.state-ambig { border-left: 4px solid var(--warn); }
.state-unsup { border-left: 4px solid var(--muted); }
.state-error { border-left: 4px solid var(--err); }
.state-info { border-left: 4px solid var(--accent); }
.loading { color: var(--muted); }
.spinner { display:inline-block; width:14px; height:14px; border:2px solid #ccc; border-top-color: var(--accent); border-radius:50%; animation: spin .7s linear infinite; vertical-align:-2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Sources ── */
.sources-group { margin-bottom: 20px; }
.sources-group h3 { margin-bottom: 8px; font-size: 1.1rem; }
.sources-table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 10px; overflow: hidden; border: 1px solid var(--line); }
.sources-table th, .sources-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); font-size: .88rem; }
.sources-table th { background: #f1ede4; font-weight: 600; }
.badge { font-size: .74rem; padding: 2px 8px; border-radius: 20px; white-space: nowrap; }
.b-indexed { background: #e2f0e2; color: var(--ok); }
.b-candidate, .b-pending { background: #fdf0dd; color: var(--warn); }
.b-citation { background: #e7edf3; color: #34506b; }
.b-blocked { background: #f9e4e2; color: var(--err); }

/* ── History ── */
.hist-item { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; font-size: .9rem; }
.hist-time { color: var(--muted); font-size: .78rem; }
.hist-q { font-weight: 600; margin: 2px 0; }
.sec-btn { background: none; border: 1px solid var(--line); border-radius: 8px; padding: 7px 14px; cursor: pointer; margin-top: 8px; }
.sec-btn:hover { background: #eee9e0; }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: #333; color: #fff; padding: 10px 18px; border-radius: 8px; font-size: .9rem; z-index: 50; }
.toast.hidden { display: none; }

/* ── Summarize AI (Change Request Gemini) ── */
.sum-area { margin-top: 14px; }
.sum-btn { margin-left: 0; background: linear-gradient(135deg, #5b4a8a, #a8572e); }
.sum-na { color: var(--muted); font-size: .85rem; font-style: italic; }
.sum-box {
  background: #fbf7ef; border: 1px solid var(--line); border-left: 4px solid var(--accent2);
  border-radius: 10px; padding: 12px 14px; margin-top: 4px;
}
.sum-box .a-label { color: var(--accent2); }
.sum-text { font-size: .97rem; line-height: 1.65; margin: 6px 0; }
.sum-note { font-size: .78rem; color: var(--muted); margin-top: 8px; border-top: 1px dashed var(--line); padding-top: 6px; }

/* ── Compare (Phase 6) ── */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 16px; }
.cmp-col { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.cmp-chr { border-top: 3px solid var(--accent2); }
.cmp-bud { border-top: 3px solid var(--accent); }
.cmp-col h3 { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 1.05rem; }
.cmp-status { font-size: .72rem; padding: 1px 8px; border-radius: 20px; font-weight: 600; }
.cmp-status.ok { background: #e2f0e2; color: var(--ok); }
.cmp-status.warn { background: #fdf0dd; color: var(--warn); }
.cmp-note { color: var(--warn); font-size: .88rem; margin-bottom: 8px; }
.cmp-ev { border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; margin-bottom: 8px; }
.cmp-ev-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.cmp-ev .sc-text { max-height: 150px; }
.cmp-ev-meta { font-size: .76rem; color: var(--muted); margin-top: 5px; }
.cmp-analysis { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.cmp-analysis h3 { margin-bottom: 8px; }
.cmp-sec { margin: 10px 0; }
.cmp-sec h4 { font-size: .95rem; color: var(--accent); margin-bottom: 6px; }
.cmp-claim { font-size: .94rem; margin-bottom: 4px; }
.cmp-cite { font-size: .82rem; color: var(--muted); margin-bottom: 8px; }
.cmp-analysis li { margin-left: 18px; font-size: .9rem; }
.trad-pair { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.trad-pair label { font-size: .9rem; display: flex; align-items: center; gap: 4px; }
@media (max-width: 760px) {
  .compare-grid { grid-template-columns: 1fr; }
}

/* ── Responsive ── */
@media (max-width: 640px) {
  main { padding: 16px 10px 30px; }
  h1 { font-size: 1.4rem; }
  .cards { grid-template-columns: 1fr; }
  .topbar { gap: 8px; }
  .form-row { flex-direction: column; align-items: stretch; }
  .ask-btn { margin-left: 0; }
  .sc-detail { grid-template-columns: 1fr; }
}