/* ─────────────────────────────────────────────
   Arctura Labs · Project Space · Client product
   ───────────────────────────────────────────── */
:root {
  --bg: #0F0E0C;
  --bg-0: #0A0907;          /* alias · 修 app.jsx 误用 --bg-0 */
  --bg-1: #15130F;
  --bg-2: #1C1A15;
  --bg-3: #24211B;
  --bg-4: #2E2A22;
  --paper: #F7F4EE;
  --paper-2: #EFEAE0;
  --ink: #1A1916;
  --text: #E8E4DB;
  --text-1: #E8E4DB;         /* alias · 修 app.jsx 误用 --text-1 */
  --text-2: rgba(232, 228, 219, 0.72);
  --text-3: rgba(232, 228, 219, 0.48);
  --text-4: rgba(232, 228, 219, 0.28);
  --line: rgba(232, 228, 219, 0.08);
  --line-2: rgba(232, 228, 219, 0.16);
  --line-3: rgba(232, 228, 219, 0.28);
  --accent: oklch(0.78 0.11 165);
  --accent-2: oklch(0.68 0.09 165);
  --accent-dim: oklch(0.68 0.09 165 / 0.18);
  --accent-line: oklch(0.68 0.09 165 / 0.5);
  --warn: oklch(0.82 0.14 82);
  --warn-dim: oklch(0.82 0.14 82 / 0.14);
  --bad: oklch(0.72 0.17 25);
  --bad-dim: oklch(0.72 0.17 25 / 0.14);

  --f-display: "Fraunces", "Songti SC", Georgia, serif;
  --f-sans: "Inter", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ─────── Layout ─────── */
.app {
  display: grid;
  grid-template-columns: 240px 1fr 380px;
  grid-template-rows: 56px 1fr;
  height: 100vh;
  min-height: 780px;
}
.topbar {
  grid-column: 1 / -1;
  display: flex; align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-1);
  gap: 24px;
}
.sidebar {
  border-right: 1px solid var(--line);
  overflow-y: auto;
  background: var(--bg-1);
}
.main {
  overflow-y: auto;
  background: var(--bg);
}
.chat {
  border-left: 1px solid var(--line);
  display: flex; flex-direction: column;
  background: var(--bg-1);
}

@media (max-width: 1200px) {
  .app { grid-template-columns: 220px 1fr 340px; }
}
@media (max-width: 980px) {
  .app { grid-template-columns: 1fr; grid-template-rows: 56px auto 1fr auto; height: auto; min-height: 100vh; }
  .sidebar { display: none; }
  .chat { border-left: none; border-top: 1px solid var(--line); max-height: 40vh; }
}

/* ─────── Topbar ─────── */
.tb-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-display); font-size: 16px; font-weight: 500;
  padding-right: 20px; border-right: 1px solid var(--line); height: 100%;
  margin-right: 8px;
}
.tb-logo .logo-mark {
  width: 18px; height: 18px; position: relative; display: inline-block; color: var(--text);
}
.tb-logo .logo-mark::before, .tb-logo .logo-mark::after { content: ""; position: absolute; inset: 0; }
.tb-logo .logo-mark::before { border: 1.1px solid currentColor; border-radius: 50%; }
.tb-logo .logo-mark::after { width: 5px; height: 5px; background: var(--accent); top: 50%; left: 50%; transform: translate(-50%, -50%); border-radius: 50%; }
.tb-logo .labs { font-family: var(--f-sans); font-size: 10px; font-weight: 500; color: var(--text-3); letter-spacing: 0.1em; text-transform: uppercase; }

.tb-crumb {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--f-mono); font-size: 12px; color: var(--text-3);
}
.tb-crumb .slash { color: var(--text-4); }
.tb-crumb b { color: var(--text); font-weight: 500; }
.tb-crumb .project-badge {
  padding: 2px 8px; background: var(--accent-dim); color: var(--accent); border-radius: 3px;
  font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase;
}

.tb-right { margin-left: auto; display: flex; align-items: center; gap: 16px; }
.tb-status { font-family: var(--f-mono); font-size: 11px; color: var(--text-3); display: flex; align-items: center; gap: 6px; }
.tb-status::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.tb-btn {
  font-size: 12px; font-weight: 500; padding: 6px 12px;
  border: 1px solid var(--line-2); border-radius: 4px;
  color: var(--text-2); transition: all 0.15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.tb-btn:hover { border-color: var(--line-3); color: var(--text); }
.tb-btn.primary { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.tb-btn.primary:hover { background: var(--accent-2); border-color: var(--accent-2); }

/* ─────── Sidebar ─────── */
.sb-section { padding: 18px 14px 10px; }
.sb-label {
  font-family: var(--f-mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--text-4); padding: 0 8px 8px;
}
.sb-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 10px; border-radius: 4px; cursor: pointer;
  font-size: 13px; color: var(--text-2);
  transition: background 0.12s, color 0.12s;
  margin-bottom: 1px;
}
.sb-item:hover { background: var(--bg-2); color: var(--text); }
.sb-item.active { background: var(--bg-3); color: var(--text); position: relative; }
.sb-item.active::before {
  content: ""; position: absolute; left: -14px; top: 6px; bottom: 6px; width: 2px; background: var(--accent);
}
.sb-item .sb-count {
  font-family: var(--f-mono); font-size: 10px; color: var(--text-4);
  padding: 2px 6px; background: var(--bg-2); border-radius: 3px;
}
.sb-item.active .sb-count { color: var(--accent); background: var(--accent-dim); }

.sb-project {
  padding: 18px 14px; border-bottom: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 4px;
}
.sb-project .sb-proj-name { font-family: var(--f-display); font-size: 18px; font-weight: 400; letter-spacing: -0.01em; }
.sb-project .sb-proj-zh { font-size: 11px; color: var(--text-3); }
.sb-project .sb-proj-meta { font-family: var(--f-mono); font-size: 10px; color: var(--text-4); margin-top: 6px; letter-spacing: 0.06em; text-transform: uppercase; }

/* ─────── Main canvas ─────── */
.view { padding: 28px 32px 60px; max-width: 1280px; }
.view-head {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 40px;
  padding-bottom: 20px; margin-bottom: 24px; border-bottom: 1px solid var(--line);
}
.view-title {
  font-family: var(--f-display); font-size: 36px; font-weight: 300; letter-spacing: -0.025em; line-height: 1;
}
.view-sub {
  font-family: var(--f-mono); font-size: 11px; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.12em; margin-top: 6px;
}
.view-tabs { display: flex; gap: 4px; }
.view-tab {
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px;
  font-size: 12px; color: var(--text-3); font-weight: 500;
  transition: all 0.15s;
}
.view-tab:hover { color: var(--text); border-color: var(--line-2); }
.view-tab.on { background: var(--text); color: var(--ink); border-color: var(--text); }

/* ─── OVERVIEW GRID ─── */
.ov-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.ov-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
@media (max-width: 900px) { .ov-grid, .ov-grid-3 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: 6px; padding: 20px 22px;
  display: flex; flex-direction: column; gap: 10px;
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--line-2); }
.card-head { display: flex; justify-content: space-between; align-items: baseline; }
.card-lbl { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.12em; }
.card-tag { font-family: var(--f-mono); font-size: 10px; padding: 2px 8px; border-radius: 3px; letter-spacing: 0.06em; text-transform: uppercase; }
.card-tag.ok { background: var(--accent-dim); color: var(--accent); }
.card-tag.warn { background: var(--warn-dim); color: var(--warn); }
.card-tag.bad { background: var(--bad-dim); color: var(--bad); }
.card-value {
  font-family: var(--f-display); font-size: 44px; font-weight: 300; letter-spacing: -0.025em; line-height: 1;
}
.card-value small { font-family: var(--f-mono); font-size: 12px; color: var(--text-3); letter-spacing: 0.06em; margin-left: 6px; font-weight: 400; }
.card-sub { font-size: 12px; color: var(--text-3); }
.card-footer { margin-top: auto; padding-top: 10px; border-top: 1px solid var(--line); font-family: var(--f-mono); font-size: 10px; color: var(--text-4); letter-spacing: 0.06em; display: flex; justify-content: space-between; text-transform: uppercase; }

/* ─── RENDER CAROUSEL ─── */
.render-feature {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden; margin-bottom: 16px;
}
.render-main {
  position: relative; aspect-ratio: 16/8; overflow: hidden;
  background: var(--bg-2);
}
.render-main img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.88) contrast(1.03) brightness(0.96); }
.render-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(15,14,12,0.85));
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 24px 28px; pointer-events: none;
}
.render-tag {
  font-family: var(--f-mono); font-size: 10px; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 6px;
}
.render-title {
  font-family: var(--f-display); font-size: 26px; font-weight: 400; letter-spacing: -0.02em;
}
.render-thumbs {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line);
}
.render-thumb {
  aspect-ratio: 16/9; background: var(--bg-2); overflow: hidden;
  cursor: pointer; position: relative; transition: opacity 0.15s;
}
.render-thumb img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.8) brightness(0.85); transition: filter 0.2s; }
.render-thumb:hover img { filter: saturate(1) brightness(1); }
.render-thumb.active img { filter: saturate(1) brightness(1); }
.render-thumb.active::after {
  content: ""; position: absolute; inset: 0; border: 2px solid var(--accent); pointer-events: none;
}
.render-thumb-lbl {
  position: absolute; bottom: 6px; left: 8px;
  font-family: var(--f-mono); font-size: 9px; color: var(--text-2);
  letter-spacing: 0.08em; text-transform: uppercase;
  background: rgba(15,14,12,0.7); padding: 2px 6px; border-radius: 2px;
}

/* ─── FLOORPLAN ─── */
.fp-wrap {
  background: var(--paper); border-radius: 6px; border: 1px solid var(--line);
  padding: 32px 28px; position: relative; aspect-ratio: 16/10; overflow: hidden;
}
.fp-canvas {
  position: relative; width: 100%; height: 100%;
  background:
    linear-gradient(var(--paper-2) 1px, transparent 1px) 0 0 / 25px 25px,
    linear-gradient(90deg, var(--paper-2) 1px, transparent 1px) 0 0 / 25px 25px,
    var(--paper);
  border: 1.5px solid var(--ink);
}
.fp-zone {
  position: absolute;
  border: 1.5px dashed rgba(26, 25, 22, 0.4);
  background: rgba(26, 25, 22, 0.03);
  font-family: var(--f-sans);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  padding: 8px;
  text-align: center;
  color: var(--ink);
}
.fp-zone:hover, .fp-zone.hover {
  background: var(--accent-dim);
  border-color: var(--accent-2);
  border-style: solid;
}
.fp-zone-name { font-family: var(--f-display); font-size: 14px; font-weight: 500; letter-spacing: -0.01em; }
.fp-zone-meta { font-family: var(--f-mono); font-size: 9px; color: rgba(26,25,22,0.55); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 2px; }
.fp-furn {
  position: absolute;
  background: rgba(139, 90, 60, 0.85);
  border: 1px solid rgba(92, 51, 23, 0.9);
  cursor: grab;
  transition: transform 0.1s;
}
.fp-furn:active { cursor: grabbing; }
.fp-furn.dragging { opacity: 0.8; z-index: 10; box-shadow: 0 8px 20px rgba(0,0,0,0.25); }
.fp-info-panel {
  position: absolute; right: 28px; top: 32px;
  background: var(--bg-1); color: var(--text);
  border: 1px solid var(--line-2); border-radius: 6px;
  padding: 14px 16px; width: 220px;
  font-family: var(--f-mono); font-size: 11px;
  transition: opacity 0.15s;
}
.fp-info-panel.hidden { opacity: 0.35; }
.fp-info-panel .fp-info-name { font-family: var(--f-display); font-size: 18px; font-weight: 400; color: var(--text); margin-bottom: 2px; letter-spacing: -0.01em; }
.fp-info-panel .fp-info-zh { font-size: 11px; color: var(--text-3); margin-bottom: 10px; font-family: var(--f-sans); }
.fp-info-panel .fp-info-row { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px dotted var(--line); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }
.fp-info-panel .fp-info-row:last-child { border-bottom: none; }
.fp-info-panel .fp-info-row b { color: var(--text); font-weight: 500; }

.fp-axis {
  font-family: var(--f-mono); font-size: 9px; color: rgba(26,25,22,0.5);
  position: absolute; text-transform: uppercase; letter-spacing: 0.08em;
}

.fp-hint {
  position: absolute; bottom: 12px; left: 28px;
  font-family: var(--f-mono); font-size: 10px; color: rgba(26,25,22,0.55);
  letter-spacing: 0.08em; text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.fp-hint::before { content: "↔"; color: var(--accent-2); font-size: 14px; }

/* ─── 3D viewer ─── */
.d3-wrap {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  position: relative; aspect-ratio: 16/10; overflow: hidden;
  perspective: 1600px;
}
.d3-stage {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  transform-style: preserve-3d;
}
.d3-room {
  position: relative;
  width: 540px; height: 340px;
  transform-style: preserve-3d;
  transform: rotateX(55deg) rotateZ(-20deg) translateZ(-40px);
  transition: transform 0.25s ease-out;
}
.d3-floor {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(90deg, #d9c4a8 0 40px, #c9b092 40px 41px),
              repeating-linear-gradient(0deg, transparent 0 40px, rgba(0,0,0,0.08) 40px 41px);
  border: 2px solid #4a3528;
  transform: translateZ(0);
}
.d3-wall {
  position: absolute; background: #e8ddc7; border: 1.5px solid #4a3528;
  transform-origin: bottom;
}
.d3-wall.n { left: 0; top: 0; right: 0; height: 2px; transform: rotateX(-90deg) translateY(1px); background: #d9c9ad; width: 100%; height: 90px; transform-origin: top; transform: rotateX(90deg) translateY(-90px); }
.d3-wall.s { left: 0; bottom: 0; right: 0; width: 100%; height: 90px; transform-origin: bottom; transform: rotateX(-90deg) translateY(90px); background: #e8ddc7; }
.d3-wall.w { top: 0; bottom: 0; left: 0; width: 90px; height: 100%; transform-origin: left; transform: rotateY(90deg) translateX(-90px); background: #d9c9ad; }
.d3-wall.e { top: 0; bottom: 0; right: 0; width: 90px; height: 100%; transform-origin: right; transform: rotateY(-90deg) translateX(90px); background: #e0d3bb; }
.d3-obj {
  position: absolute;
  transform-style: preserve-3d;
}
.d3-obj .top { position: absolute; inset: 0; }
.d3-obj.table {
  left: 200px; top: 130px; width: 160px; height: 80px;
  transform: translateZ(28px);
}
.d3-obj.table .top { background: #6b4a32; border: 1px solid #3d2a1d; box-shadow: inset 0 0 0 4px #8b6544; }
.d3-obj.chair {
  width: 38px; height: 38px; transform: translateZ(18px);
}
.d3-obj.chair .top { background: #8b5a3c; border: 1px solid #5a3925; }
.d3-obj.chair.c1 { left: 150px; top: 150px; }
.d3-obj.chair.c2 { left: 370px; top: 150px; }
.d3-obj.chair.c3 { left: 251px; top: 90px; }
.d3-obj.chair.c4 { left: 251px; top: 220px; }
.d3-obj.cabinet {
  left: 420px; top: 50px; width: 70px; height: 40px; transform: translateZ(50px);
}
.d3-obj.cabinet .top { background: #5a3925; border: 1px solid #2e1c10; }
.d3-obj.zen {
  left: 420px; top: 240px; width: 80px; height: 70px; transform: translateZ(5px);
}
.d3-obj.zen .top { background: radial-gradient(circle, #b8a584, #9a8865); border: 1px solid #6b5a3d; }
.d3-obj.screen {
  left: 60px; top: 60px; width: 12px; height: 100px; transform: translateZ(45px);
}
.d3-obj.screen .top { background: #3a2818; border: 1px solid #1e120a; }
.d3-obj.counter {
  left: 50px; top: 240px; width: 80px; height: 30px; transform: translateZ(35px);
}
.d3-obj.counter .top { background: #5a3925; border: 1px solid #2e1c10; }

.d3-controls {
  position: absolute; top: 16px; right: 16px; display: flex; flex-direction: column; gap: 6px;
}
.d3-btn {
  width: 32px; height: 32px;
  background: rgba(15,14,12,0.75); border: 1px solid var(--line-2);
  border-radius: 4px; color: var(--text-2);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--f-mono); font-size: 14px;
  transition: all 0.15s;
}
.d3-btn:hover { color: var(--text); border-color: var(--line-3); }

.d3-hint {
  position: absolute; bottom: 16px; left: 16px;
  font-family: var(--f-mono); font-size: 10px; color: var(--text-3);
  letter-spacing: 0.08em; text-transform: uppercase;
}

.d3-legend {
  position: absolute; bottom: 16px; right: 16px;
  background: rgba(15,14,12,0.75); border: 1px solid var(--line-2);
  border-radius: 4px; padding: 8px 12px;
  font-family: var(--f-mono); font-size: 10px; color: var(--text-3);
  letter-spacing: 0.06em; text-transform: uppercase;
  display: flex; flex-direction: column; gap: 4px;
}
.d3-legend b { color: var(--text); font-weight: 500; }

/* ─── BOQ ─── */
.boq-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px; background: var(--bg-1);
  border: 1px solid var(--line); border-radius: 6px 6px 0 0;
  border-bottom: none;
}
.boq-region-switch { display: flex; gap: 4px; }
.boq-region-btn {
  padding: 6px 14px; font-size: 11px; font-weight: 500;
  color: var(--text-3); border: 1px solid var(--line-2); border-radius: 4px;
  font-family: var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  transition: all 0.15s;
}
.boq-region-btn:hover { color: var(--text); }
.boq-region-btn.on { background: var(--accent); color: var(--ink); border-color: var(--accent); }

.boq-total-row {
  display: flex; gap: 40px; align-items: baseline;
}
.boq-total-row .lbl { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.12em; display: block; margin-bottom: 4px; }
.boq-total-row .val { font-family: var(--f-display); font-size: 32px; font-weight: 300; letter-spacing: -0.02em; line-height: 1; }
.boq-total-row .val small { font-family: var(--f-mono); font-size: 12px; color: var(--text-3); margin-left: 4px; }

.boq-table {
  background: var(--bg-1); border: 1px solid var(--line);
  border-radius: 0 0 6px 6px; overflow: hidden;
}
.boq-table table { width: 100%; border-collapse: collapse; }
.boq-table th {
  text-align: left; padding: 12px 22px;
  font-family: var(--f-mono); font-size: 10px; font-weight: 500;
  color: var(--text-4); text-transform: uppercase; letter-spacing: 0.12em;
  border-bottom: 1px solid var(--line);
}
.boq-table th.right { text-align: right; }
.boq-table td {
  padding: 12px 22px; font-size: 13px; color: var(--text-2);
  border-bottom: 1px solid var(--line); vertical-align: top;
}
.boq-table tr:last-child td { border-bottom: none; }
.boq-table td.cat { font-family: var(--f-mono); font-size: 11px; color: var(--text-4); text-transform: uppercase; letter-spacing: 0.08em; }
.boq-table td.desc b { color: var(--text); font-weight: 500; display: block; margin-bottom: 2px; }
.boq-table td.desc span { font-size: 11px; color: var(--text-3); }
.boq-table td.qty { font-family: var(--f-mono); color: var(--text-3); text-align: right; font-variant-numeric: tabular-nums; }
.boq-table td.amt { font-family: var(--f-mono); color: var(--text); text-align: right; font-variant-numeric: tabular-nums; font-weight: 500; }
.boq-table tr.subtotal td { background: var(--bg-2); font-weight: 500; color: var(--text); }
.boq-table tr.grand td { background: var(--bg-3); color: var(--text); font-family: var(--f-display); font-size: 18px; font-weight: 400; }
.boq-table tr.grand td.amt { font-family: var(--f-display); font-size: 20px; }

/* ─── ENERGY ─── */
.eui-hero {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  padding: 28px 32px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px;
  margin-bottom: 16px;
}
@media (max-width: 900px) { .eui-hero { grid-template-columns: 1fr; } }
.eui-left { display: flex; flex-direction: column; gap: 14px; }
.eui-big { display: flex; align-items: baseline; gap: 14px; }
.eui-big .val { font-family: var(--f-display); font-size: 100px; font-weight: 300; letter-spacing: -0.04em; line-height: 1; }
.eui-big .unit { font-family: var(--f-mono); font-size: 11px; color: var(--text-3); letter-spacing: 0.08em; text-transform: uppercase; }
.eui-big .delta { margin-left: auto; padding: 4px 12px; background: var(--accent-dim); color: var(--accent); border-radius: 4px; font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; }
.eui-baseline { font-family: var(--f-mono); font-size: 11px; color: var(--text-3); display: flex; gap: 24px; padding-top: 12px; border-top: 1px solid var(--line); }
.eui-baseline b { color: var(--text); font-family: var(--f-display); font-size: 18px; font-weight: 400; display: block; letter-spacing: -0.01em; }

.eui-right { display: flex; flex-direction: column; gap: 10px; }
.eui-bar-row { display: grid; grid-template-columns: 90px 1fr 50px; gap: 12px; align-items: center; }
.eui-bar-row .lbl { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.08em; }
.eui-bar-row .track { height: 6px; background: var(--bg-3); border-radius: 3px; overflow: hidden; }
.eui-bar-row .fill { height: 100%; background: var(--accent); border-radius: 3px; transition: width 0.4s ease; }
.eui-bar-row .num { font-family: var(--f-mono); font-size: 12px; color: var(--text); text-align: right; font-variant-numeric: tabular-nums; font-weight: 500; }

/* ─── COMPLIANCE ─── */
.cmp-head {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.cmp-code-switch { display: flex; gap: 4px; flex-wrap: wrap; }
.cmp-code-btn {
  padding: 6px 12px; font-size: 11px; font-weight: 500;
  color: var(--text-3); border: 1px solid var(--line-2); border-radius: 4px;
  font-family: var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  transition: all 0.15s;
}
.cmp-code-btn:hover { color: var(--text); }
.cmp-code-btn.on { background: var(--text); color: var(--ink); border-color: var(--text); }

.cmp-table {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
}
.cmp-row {
  display: grid; grid-template-columns: 30px 1.5fr 1fr 1fr 120px;
  gap: 16px; padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  align-items: center;
}
.cmp-row:last-child { border-bottom: none; }
.cmp-row .cmp-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.cmp-row.pass .cmp-dot { background: var(--accent); box-shadow: 0 0 10px var(--accent-dim); }
.cmp-row.warn .cmp-dot { background: var(--warn); box-shadow: 0 0 10px var(--warn-dim); }
.cmp-row.fail .cmp-dot { background: var(--bad); box-shadow: 0 0 10px var(--bad-dim); }
.cmp-check b { color: var(--text); font-weight: 500; display: block; margin-bottom: 2px; font-size: 13px; }
.cmp-check span { font-size: 11px; color: var(--text-4); font-family: var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.cmp-value, .cmp-limit { font-family: var(--f-mono); font-size: 12px; color: var(--text-2); }
.cmp-value b { color: var(--text); font-weight: 500; }
.cmp-status {
  font-family: var(--f-mono); font-size: 10px; padding: 3px 10px;
  border-radius: 3px; letter-spacing: 0.1em; text-transform: uppercase; text-align: center;
}
.cmp-row.pass .cmp-status { background: var(--accent-dim); color: var(--accent); }
.cmp-row.warn .cmp-status { background: var(--warn-dim); color: var(--warn); }
.cmp-row.fail .cmp-status { background: var(--bad-dim); color: var(--bad); }

.cmp-verdict {
  background: var(--bg-1); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 6px; padding: 16px 20px; margin-bottom: 16px;
  display: flex; justify-content: space-between; align-items: center;
}
.cmp-verdict.warn { border-left-color: var(--warn); }
.cmp-verdict.fail { border-left-color: var(--bad); }
.cmp-verdict .v-lbl { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.12em; display: block; margin-bottom: 4px; }
.cmp-verdict .v-val { font-family: var(--f-display); font-size: 22px; font-weight: 400; letter-spacing: -0.01em; }

/* ─── WHAT-IF ─── */
.wi-panel {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  padding: 24px 28px; margin-bottom: 16px;
}
.wi-slider {
  margin-bottom: 20px;
}
.wi-slider:last-child { margin-bottom: 0; }
.wi-slider-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.wi-slider-head .lbl { font-family: var(--f-mono); font-size: 11px; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.1em; }
.wi-slider-head .lbl small { color: var(--text-4); font-size: 10px; margin-left: 8px; }
.wi-slider-head .val { font-family: var(--f-display); font-size: 20px; font-weight: 400; letter-spacing: -0.01em; }
.wi-slider-head .val small { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); margin-left: 4px; }
.wi-slider input[type="range"] {
  width: 100%;
  -webkit-appearance: none; appearance: none;
  height: 4px; background: var(--bg-3); border-radius: 2px;
  outline: none;
}
.wi-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); cursor: pointer;
  border: 2px solid var(--bg);
}
.wi-slider input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); cursor: pointer; border: 2px solid var(--bg);
}

.wi-impact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 4px; }
@media (max-width: 900px) { .wi-impact-grid { grid-template-columns: 1fr 1fr; } }
.wi-impact {
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 4px;
  padding: 14px;
}
.wi-impact .lbl { font-family: var(--f-mono); font-size: 9px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 6px; }
.wi-impact .val { font-family: var(--f-display); font-size: 22px; font-weight: 400; letter-spacing: -0.01em; }
.wi-impact .val small { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); margin-left: 4px; }
.wi-impact .delta { font-family: var(--f-mono); font-size: 10px; margin-top: 4px; letter-spacing: 0.04em; }
.wi-impact .delta.up { color: var(--bad); }
.wi-impact .delta.dn { color: var(--accent); }

/* ─── A/B/C ─── */
.abc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
@media (max-width: 900px) { .abc-grid { grid-template-columns: 1fr; } }
.abc-variant {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden; display: flex; flex-direction: column;
  transition: border-color 0.15s;
}
.abc-variant:hover { border-color: var(--line-2); }
.abc-variant.chosen { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-line); }
.abc-img { aspect-ratio: 4/3; background: var(--bg-2); position: relative; overflow: hidden; }
.abc-img img { width: 100%; height: 100%; object-fit: cover; filter: saturate(0.88) contrast(1.02); }
.abc-label {
  position: absolute; top: 12px; left: 12px;
  background: rgba(15,14,12,0.75); color: var(--text);
  padding: 4px 10px; border-radius: 3px;
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
}
.abc-label.A { background: rgba(15,14,12,0.8); }
.abc-variant.chosen .abc-label { background: var(--accent); color: var(--ink); }
.abc-body { padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.abc-name { font-family: var(--f-display); font-size: 22px; font-weight: 400; letter-spacing: -0.015em; }
.abc-name .zh { display: block; font-family: var(--f-sans); font-size: 12px; color: var(--text-3); margin-top: 2px; font-weight: 400; }
.abc-tagline { font-size: 12px; color: var(--text-3); line-height: 1.5; }
.abc-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding-top: 12px; border-top: 1px solid var(--line); }
.abc-spec .lbl { font-family: var(--f-mono); font-size: 9px; color: var(--text-4); text-transform: uppercase; letter-spacing: 0.08em; }
.abc-spec .val { font-family: var(--f-display); font-size: 16px; font-weight: 400; margin-top: 2px; }
.abc-spec .val small { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); margin-left: 2px; }
.abc-choose {
  margin-top: auto;
  padding: 10px 14px; border: 1px solid var(--line-2); border-radius: 4px;
  text-align: center; font-size: 12px; font-weight: 500; color: var(--text-2);
  transition: all 0.15s;
}
.abc-choose:hover { border-color: var(--line-3); color: var(--text); }
.abc-variant.chosen .abc-choose { background: var(--accent); color: var(--ink); border-color: var(--accent); }

/* ─── TIMELINE ─── */
.tl-wrap {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  padding: 24px 28px;
}
.tl-row {
  display: grid; grid-template-columns: 120px 20px 1fr;
  gap: 16px; padding: 14px 0;
  border-bottom: 1px dashed var(--line);
  align-items: start;
}
.tl-row:last-child { border-bottom: none; }
.tl-time { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; padding-top: 4px; }
.tl-mark { position: relative; padding-top: 6px; }
.tl-mark::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); display: block; margin: 0 auto; }
.tl-mark::after { content: ""; position: absolute; top: 18px; bottom: -30px; left: 50%; width: 1px; background: var(--line); }
.tl-row:last-child .tl-mark::after { display: none; }
.tl-content b { color: var(--text); font-weight: 500; font-size: 13px; display: block; margin-bottom: 2px; }
.tl-content p { color: var(--text-3); font-size: 12px; line-height: 1.5; }
.tl-content .tl-diff { font-family: var(--f-mono); font-size: 10px; margin-top: 6px; color: var(--text-3); letter-spacing: 0.04em; }
.tl-content .tl-diff i { font-style: normal; color: var(--accent); }
.tl-content .tl-diff u { text-decoration: none; color: var(--warn); }

/* ─── DOWNLOADS ─── */
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 900px) { .dl-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .dl-grid { grid-template-columns: 1fr; } }
.dl-file {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 4px;
  padding: 14px 16px; display: flex; align-items: center; gap: 12px;
  cursor: pointer; transition: border-color 0.15s;
}
.dl-file:hover { border-color: var(--line-2); }
.dl-file .dl-ext {
  font-family: var(--f-mono); font-size: 10px; padding: 3px 6px;
  background: var(--bg-3); color: var(--text-2);
  border-radius: 3px; letter-spacing: 0.06em;
}
.dl-file .dl-name { flex: 1; font-size: 13px; color: var(--text); font-weight: 500; }
.dl-file .dl-name span { display: block; font-size: 10px; color: var(--text-4); font-weight: 400; margin-top: 2px; font-family: var(--f-mono); letter-spacing: 0.04em; }
.dl-file .dl-size { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); }

/* ─── DECKS ─── */
.deck-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 900px) { .deck-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .deck-grid { grid-template-columns: 1fr; } }
.deck-card {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden; cursor: pointer; transition: all 0.15s;
}
.deck-card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.deck-thumb {
  aspect-ratio: 16/10; background: var(--bg-2); position: relative;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: 12px; overflow: hidden;
}
.deck-thumb::before {
  content: ""; position: absolute; inset: 0; opacity: 0.08;
  background: linear-gradient(135deg, var(--accent) 0%, transparent 50%);
}
.deck-thumb-title { font-family: var(--f-display); font-size: 14px; font-weight: 500; color: var(--text); letter-spacing: -0.01em; z-index: 1; }
.deck-thumb-num { font-family: var(--f-mono); font-size: 9px; color: var(--text-4); text-transform: uppercase; letter-spacing: 0.12em; z-index: 1; }
.deck-body { padding: 12px 14px; }
.deck-title { font-size: 13px; font-weight: 500; color: var(--text); margin-bottom: 2px; }
.deck-pages { font-family: var(--f-mono); font-size: 10px; color: var(--text-4); letter-spacing: 0.06em; text-transform: uppercase; }

/* ─── Chat panel ─── */
.chat-head {
  padding: 16px 20px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
}
.chat-head .chat-title { font-family: var(--f-display); font-size: 17px; font-weight: 400; letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; }
.chat-head .chat-title::before { content: ""; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 2s ease-in-out infinite; }
.chat-head .chat-sub { font-family: var(--f-mono); font-size: 10px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 2px; }

.chat-body {
  flex: 1; overflow-y: auto;
  padding: 20px; display: flex; flex-direction: column; gap: 14px;
}
.msg { max-width: 92%; line-height: 1.5; font-size: 13px; }
.msg.user {
  align-self: flex-end;
  background: var(--bg-3); padding: 10px 14px; border-radius: 10px 10px 2px 10px;
  color: var(--text); border: 1px solid var(--line);
}
.msg.bot {
  align-self: flex-start;
  border-left: 2px solid var(--accent); padding: 4px 0 4px 14px; color: var(--text-2);
}
.msg.bot b { color: var(--text); font-weight: 500; }
.msg.bot .msg-diff {
  display: flex; gap: 12px; margin-top: 8px;
  font-family: var(--f-mono); font-size: 10px; color: var(--text-3);
  letter-spacing: 0.04em;
  flex-wrap: wrap;
}
.msg.bot .msg-diff i { font-style: normal; color: var(--accent); }
.msg.bot .msg-diff u { text-decoration: none; color: var(--warn); }
.msg.sys {
  text-align: center; font-family: var(--f-mono); font-size: 10px; color: var(--text-4);
  text-transform: uppercase; letter-spacing: 0.14em; padding: 8px 0;
  border-top: 1px dashed var(--line); border-bottom: 1px dashed var(--line);
}

.chat-suggest {
  padding: 0 20px 12px;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.chat-chip {
  font-size: 11px; padding: 5px 10px;
  border: 1px solid var(--line-2); border-radius: 999px;
  color: var(--text-2); cursor: pointer; transition: all 0.15s;
}
.chat-chip:hover { border-color: var(--accent); color: var(--accent); }

.chat-input-wrap {
  border-top: 1px solid var(--line); padding: 14px 16px;
  display: flex; gap: 10px; align-items: center;
}
.chat-input {
  flex: 1; padding: 10px 14px;
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 999px; color: var(--text);
  font-family: var(--f-sans); font-size: 13px;
  outline: none; transition: border-color 0.15s;
}
.chat-input:focus { border-color: var(--accent-line); }
.chat-input::placeholder { color: var(--text-4); }
.chat-send {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent); color: var(--ink);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.15s; font-weight: 600;
}
.chat-send:hover { background: var(--accent-2); }
.chat-send:disabled { opacity: 0.4; cursor: not-allowed; }
.chat-input:disabled { opacity: 0.6; cursor: not-allowed; }

.msg-thinking { display: inline-flex; gap: 4px; padding: 4px 0; }
.msg-thinking span {
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  animation: dot 1.2s ease-in-out infinite;
}
.msg-thinking span:nth-child(2) { animation-delay: 0.2s; }
.msg-thinking span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dot {
  0%, 60%, 100% { transform: scale(0.6); opacity: 0.35; }
  30% { transform: scale(1); opacity: 1; }
}

/* ─── Scroll ─── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 10px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--line-3); }

/* ─── Native form controls (select / option) on dark theme ─── */
/* 之前 bug：app.jsx 内联样式用了未定义的 var · 下拉菜单 option 浏览器默认白底
   → 与亮色 color 相撞 → 白字白底不可读。
   统一强制 dark color-scheme + 显式给 option 上色，覆盖 OS 默认。*/
select {
  background: var(--bg-1);
  color: var(--text);
  color-scheme: dark;
}
select option {
  background: var(--bg-1);
  color: var(--text);
}
select:focus { outline: 1px solid var(--line-2); }