/* E7 Case Viewer — Prototype MVP.  Clean research-tool look; no dashboard styling. */
:root {
  --bg: #f6f6f4;
  --surface: #ffffff;
  --ink: #1e2328;
  --ink-2: #5a636c;
  --muted: #8b949c;
  --line: #e2e4e1;
  --line-2: #cfd3cf;
  --up: #cf3f3f;        /* TW convention: red = up   */
  --down: #1f8a56;      /* TW convention: green = down */
  --accent: #2f5d8a;
  --accent-soft: #eaf0f6;
  --warn: #a8641b;
  --radius: 6px;
  --mono: "SF Mono", "Menlo", "Consolas", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang TC",
               "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 12px; }
.note-sm { color: var(--ink-2); font-size: 12px; margin: 6px 0 0; }
.hint { color: var(--ink-2); font-size: 12px; margin: 2px 0 8px; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  padding: 10px 18px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: baseline; gap: 10px; }
.brand-name { font-weight: 700; letter-spacing: .2px; }
.brand-sub { color: var(--muted); font-size: 12px; }
.nav { display: flex; gap: 6px; }
.nav-btn {
  border: 1px solid transparent; background: transparent; color: var(--ink-2);
  padding: 6px 12px; border-radius: var(--radius); cursor: pointer;
  font-size: 13px; font-family: inherit;
}
.nav-btn:hover { background: var(--accent-soft); color: var(--accent); }
.nav-btn.active { background: var(--accent-soft); color: var(--accent); border-color: #d3e0ec; font-weight: 600; }

/* ---------- banner ---------- */
.banner {
  padding: 8px 18px; font-size: 13px;
  border-bottom: 1px solid var(--line);
}
.banner.info { background: #eef4fa; color: #24486e; }
.banner.warn { background: #fdf3e3; color: #7a4a10; }
.banner.err  { background: #fdeeee; color: #8f2b2b; }

/* ---------- layout ---------- */
.view { display: block; }
.split {
  display: grid;
  grid-template-columns: minmax(0, 70fr) minmax(0, 30fr);
  gap: 14px;
  padding: 14px 18px 4px;
  align-items: start;
}
.chart-col { min-width: 0; }
.panel-col { min-width: 0; display: flex; flex-direction: column; gap: 12px; }

.chart-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.chip {
  font-size: 11px; font-weight: 700; letter-spacing: .4px;
  padding: 3px 8px; border-radius: 999px; border: 1px solid;
}
.chip-blind   { color: #24486e; background: #eef4fa; border-color: #cddff0; }
.chip-reveal  { color: #7a4a10; background: #fdf3e3; border-color: #f0dcc0; }
.chip-explore { color: #3f4a2e; background: #f2f5e9; border-color: #dde4cb; }
.order-line { color: var(--ink-2); font-size: 13px; }

.chart { width: 100%; height: 460px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.legend {
  min-height: 22px; margin-top: 4px; font-family: var(--mono); font-size: 12px;
  color: var(--ink-2); white-space: pre-wrap;
}
.chart-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 6px; }

/* ---------- panel ---------- */
.panel-block {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px 14px;
}
.panel-block h3 {
  margin: 0 0 8px; font-size: 12px; letter-spacing: .6px;
  text-transform: uppercase; color: var(--ink-2); font-weight: 700;
}
.panel-block h3:not(:first-child) { margin-top: 14px; }
.panel-block.is-loading { pointer-events: none; opacity: .55; }

table.kv { width: 100%; border-collapse: collapse; }
table.kv th, table.kv td { padding: 4px 0; vertical-align: top; text-align: left; font-size: 13px; }
table.kv th { color: var(--ink-2); font-weight: 500; width: 46%; white-space: nowrap; }
table.kv td { font-family: var(--mono); font-size: 12.5px; }
table.kv td.txt { font-family: inherit; font-size: 13px; }

/* ---------- quality + tags ---------- */
.quality-row { display: flex; gap: 6px; flex-wrap: wrap; }
.q-btn {
  flex: 1 1 0; min-width: 46px; padding: 8px 4px; cursor: pointer;
  border: 1px solid var(--line-2); background: var(--surface); border-radius: var(--radius);
  font-family: inherit; font-size: 13px; color: var(--ink); line-height: 1.2;
}
.q-btn .q-n { display: block; font-weight: 700; font-size: 15px; }
.q-btn .q-l { display: block; font-size: 10px; color: var(--ink-2); }
.q-btn:hover { border-color: var(--accent); }
.q-btn.sel { background: var(--accent); border-color: var(--accent); color: #fff; }
.q-btn.sel .q-l { color: #dce8f3; }

.tags { display: flex; flex-wrap: wrap; gap: 5px; }
.tag-btn {
  padding: 4px 9px; border-radius: 999px; cursor: pointer; font-family: inherit;
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink-2); font-size: 12px;
}
.tag-btn:hover { border-color: var(--accent); color: var(--accent); }
.tag-btn.sel { background: var(--accent-soft); border-color: #cddff0; color: var(--accent); font-weight: 600; }

textarea {
  width: 100%; border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 7px 9px; font-family: inherit; font-size: 13px; resize: vertical; color: var(--ink);
  background: #fdfdfc;
}
textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

.check { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; cursor: pointer; }
.check input { margin-top: 3px; }

.skip-row { margin-top: 12px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
select {
  border: 1px solid var(--line-2); border-radius: var(--radius); padding: 6px 8px;
  font-family: inherit; font-size: 13px; background: #fdfdfc;
}

/* ---------- buttons ---------- */
.btn {
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink);
  padding: 7px 13px; border-radius: var(--radius); cursor: pointer;
  font-family: inherit; font-size: 13px;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #24486e; color: #fff; }
.btn-ghost { color: var(--ink-2); }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn-lg { padding: 11px 20px; font-size: 15px; }

/* ---------- blind footer ---------- */
.blind-foot {
  position: sticky; bottom: 0; z-index: 15;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 10px 18px; margin-top: 8px;
  background: var(--surface); border-top: 1px solid var(--line);
}
.foot-left, .foot-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.keyhint { color: var(--muted); font-size: 11.5px; }

/* ---------- center card / start ---------- */
.center-card {
  max-width: 680px; margin: 56px auto; background: var(--surface);
  border: 1px solid var(--line); border-radius: 8px; padding: 28px 30px;
}
.center-card h1 { margin: 0 0 10px; font-size: 21px; }
.lede { color: var(--ink-2); font-size: 14px; }
ul.plain { color: var(--ink-2); font-size: 13px; padding-left: 20px; }
ul.plain li { margin: 3px 0; }
.start-foot { margin-top: 16px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.gate-report {
  margin-top: 14px; background: #f2f4f1; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 10px; font-family: var(--mono); font-size: 12px;
  white-space: pre-wrap; color: var(--ink-2); overflow-x: auto;
}

/* ---------- prose (about) ---------- */
.prose { max-width: 780px; margin: 30px auto 70px; padding: 0 22px; }
.prose h1 { font-size: 22px; }
.prose h2 { font-size: 15px; margin: 22px 0 6px; color: var(--ink); }
.prose p { color: var(--ink-2); font-size: 13.5px; }
.prose code {
  background: #eef0ed; padding: 1px 5px; border-radius: 3px;
  font-family: var(--mono); font-size: 12px;
}

/* ---------- reveal list ---------- */
.outline { margin-top: 12px; }
.outline summary { cursor: pointer; font-size: 13px; color: var(--accent); }
.reveal-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.reveal-list .btn { font-size: 12px; padding: 4px 9px; }

/* ---------- outcome emphasis (deliberately restrained) ---------- */
.out-big { font-family: var(--mono); font-size: 15px; font-weight: 700; }
.out-pos { color: var(--up); }
.out-neg { color: var(--down); }
.out-flat { color: var(--ink-2); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; padding: 10px; }
  .chart { height: 340px; }
  .brand-sub { display: none; }
  .nav-btn { padding: 6px 8px; font-size: 12px; }
  .blind-foot { position: static; }
}