:root {
  --burgundy: #700b06;
  --burgundy-dark: #5a0805;
  --bg: #f7ecd0;
  --panel: #ffffff;
  --panel-strong: #fff8e6;
  --ink: #160907;
  --muted: #3f2719;
  --line: #9b6a1f;
  --warning-line: #d99b18;

  --optimal: #1f7a43; --optimal-bg: #eaf6ee; --optimal-line: #3aa564;
  --warning: #a5730a; --warning-bg: #fff4d6;
  --high: #8f1108;   --high-bg: #fbe4e1;   --high-line: #c8332a;

  --sand: #f3e6c6;
  --sand-soft: #faf1dc;

  --radius: 14px; --radius-sm: 10px;
  --shadow: 0 10px 26px rgba(22, 9, 7, 0.12);
  --shadow-soft: 0 4px 14px rgba(22, 9, 7, 0.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.55; -webkit-font-smoothing: antialiased; }
h1, h2, h3 { margin: 0; line-height: 1.25; color: var(--ink); }
p { margin: 0 0 0.75rem; }
em { font-style: italic; color: var(--muted); }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--warning-line); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.page-header { background: var(--burgundy); border-bottom: 4px solid var(--warning-line); }
.image-banner { display: block; max-width: 1400px; margin: 0 auto; }
.image-banner img { display: block; width: 100%; height: auto; }

.app-shell { display: grid; grid-template-columns: 300px 1fr; gap: 24px; max-width: 1400px; margin: 0 auto; padding: 24px; align-items: start; }

.sidebar { position: sticky; top: 24px; background: linear-gradient(165deg, var(--burgundy) 0%, var(--burgundy-dark) 100%); color: #fdeede; border-radius: var(--radius); padding: 20px 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 30px; line-height: 1; color: var(--warning-line); text-shadow: 0 2px 6px rgba(0,0,0,0.35); }
.brand-title { font-size: 15px; font-weight: 700; letter-spacing: 0.2px; }
.brand-sub { font-size: 12px; text-transform: uppercase; letter-spacing: 2px; color: var(--warning-line); }

.patient-chip { position: relative; background: rgba(255,255,255,0.08); border: 1px solid rgba(255,248,230,0.22); border-radius: var(--radius-sm); padding: 12px; display: flex; flex-direction: column; gap: 6px; }
.patient-chip-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 13px; }
.patient-chip-label { color: #f3d7b8; }
.patient-chip-value { font-weight: 700; }
.patient-chip-view { display: flex; flex-direction: column; gap: 6px; }

.side-nav { display: flex; flex-direction: column; gap: 6px; }
.nav-item { display: flex; align-items: center; gap: 12px; width: 100%; padding: 11px 12px; border: 1px solid transparent; border-radius: var(--radius-sm); background: transparent; color: #fdeede; font: inherit; font-size: 14px; text-align: left; cursor: pointer; transition: background 0.18s ease, border-color 0.18s ease, transform 0.05s ease; }
.nav-item:hover { background: rgba(255,255,255,0.10); }
.nav-item:active { transform: translateY(1px); }
.nav-item.is-active { background: var(--panel-strong); color: var(--burgundy-dark); border-color: var(--warning-line); font-weight: 700; }
.nav-ico { width: 20px; text-align: center; font-size: 15px; }
.mobile-nav-label, .mobile-nav { display: none; }

.ghost-btn { background: transparent; color: #fdeede; border: 1px solid rgba(255,248,230,0.4); border-radius: var(--radius-sm); padding: 9px 12px; font: inherit; font-size: 13px; cursor: pointer; transition: background 0.18s ease, border-color 0.18s ease; }
.ghost-btn:hover { background: rgba(255,255,255,0.12); }
.content .ghost-btn { color: var(--burgundy-dark); border-color: var(--line); }
.content .ghost-btn:hover { background: #f3e6c6; }
.reset-btn { align-self: flex-start; }
.brand-foot { margin-top: auto; font-size: 11px; line-height: 1.5; color: #f0d5b4; border-top: 1px solid rgba(255,248,230,0.22); padding-top: 12px; }

.content { min-width: 0; display: flex; flex-direction: column; gap: 22px; }
.hero { background: var(--panel-strong); border: 1px solid var(--line); border-left: 6px solid var(--burgundy); border-radius: var(--radius); padding: 26px 28px; box-shadow: var(--shadow-soft); }
.eyebrow { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 2.5px; color: var(--burgundy); background: #f3e6c6; border: 1px solid var(--warning-line); border-radius: 999px; padding: 4px 12px; margin-bottom: 12px; }
.hero-title { font-size: 27px; color: var(--burgundy-dark); margin-bottom: 10px; }
.hero-copy { max-width: 74ch; color: var(--muted); margin-bottom: 14px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.module { display: none; flex-direction: column; gap: 22px; }
.module.is-active { display: flex; }
.module:focus { outline: none; }

.panel-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow-soft); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.panel-head h2 { font-size: 18px; color: var(--burgundy-dark); }
.muted-copy { color: var(--muted); font-size: 14px; }

.two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; align-items: start; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

.tag { display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--burgundy-dark); background: #f3e6c6; border: 1px solid var(--warning-line); border-radius: 999px; padding: 4px 11px; white-space: nowrap; }
.tag-soft { color: var(--muted); background: #faf1dc; border-color: var(--line); font-weight: 600; }
.chip-tag { background: #fdeede; }

.stat-card { display: flex; flex-direction: column; gap: 6px; }
.stat-value { font-size: 30px; font-weight: 800; color: var(--burgundy); line-height: 1.1; }
.stat-unit { font-size: 15px; font-weight: 700; color: var(--muted); }
.stat-label { font-size: 13px; color: var(--muted); }

.alert-box { margin-top: 14px; padding: 13px 15px; border-radius: var(--radius-sm); border: 1px solid var(--line); border-left: 6px solid var(--line); background: var(--panel-strong); color: var(--muted); font-size: 14px; }
.alert-box strong { color: var(--ink); }
.alert-optimal { background: var(--optimal-bg); border-color: var(--optimal-line); border-left-color: var(--optimal); color: #16532e; }
.alert-optimal strong { color: var(--optimal); }
.alert-warning { background: var(--warning-bg); border-color: var(--warning-line); border-left-color: var(--warning); color: #7a5406; }
.alert-warning strong { color: var(--warning); }
.alert-high { background: var(--high-bg); border-color: var(--high-line); border-left-color: var(--high); color: #7a0f08; }
.alert-high strong { color: var(--high); }

/* Model tiles (overview routing) and toggle chips (brief builders) */
.model-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.model-tile { text-align: left; background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; cursor: pointer; font: inherit; color: var(--ink); }
.model-tile:hover { border-color: var(--warning-line); }
.model-tile .m-ico { display: block; font-size: 20px; margin-bottom: 6px; }
.model-tile .m-title { display: block; font-weight: 700; color: var(--burgundy-dark); margin-bottom: 4px; }
.model-tile .m-desc { display: block; font-size: 13px; color: var(--muted); }

.toggle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.toggle-chip { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel); cursor: pointer; font-size: 13px; color: var(--muted); }
.toggle-chip input { accent-color: var(--burgundy); }
.toggle-chip.is-on { background: var(--panel-strong); border-color: var(--warning-line); color: var(--ink); font-weight: 600; }

.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 6px; }
.metric-card { background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; text-align: center; display: flex; flex-direction: column; gap: 6px; }

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
.data-table th { color: var(--burgundy-dark); }

@media (max-width: 1120px) {
  .app-shell { grid-template-columns: 240px 1fr; gap: 18px; padding: 18px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 24px; }
}
@media (max-width: 820px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; top: auto; }
  .side-nav { display: none; }
  .brand-foot { display: none; }
  .mobile-nav-label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: #f3d7b8; }
  .mobile-nav { display: block; background: var(--panel-strong); color: var(--burgundy-dark); font-weight: 700; border-color: var(--warning-line); }
  .two-col { grid-template-columns: 1fr; }
  .hero { padding: 20px; }
}
@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .toggle-grid { grid-template-columns: 1fr; }
  .metric-grid { grid-template-columns: 1fr 1fr; }
}

/* ===================================================================
   Paper-specific components
   =================================================================== */

.mobile-nav { padding: 9px 10px; border: 1px solid var(--warning-line); border-radius: var(--radius-sm); font: inherit; font-size: 14px; }
.note { font-size: 12px; color: var(--muted); margin: 10px 0 0; }
.group-title { font-size: 14px; color: var(--burgundy-dark); margin: 16px 0 8px; }
.metric-value { font-size: 20px; font-weight: 800; color: var(--burgundy); line-height: 1.2; }
.metric-label { font-size: 12px; color: var(--muted); }

/* Segmented controls */
.seg-wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; margin: 6px 0 14px; }
.seg-label { display: block; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.seg-control { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: var(--panel-strong); }
.seg-btn { border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); font: inherit; font-size: 13px; padding: 8px 14px; cursor: pointer; }
.seg-btn:last-child { border-right: 0; }
.seg-btn:hover { background: var(--sand); }
.seg-btn.is-sel { background: var(--burgundy); color: var(--panel-strong); font-weight: 700; }

.field-select { font: inherit; font-size: 14px; padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel); color: var(--ink); }

/* Logic chain */
.chain { list-style: none; margin: 14px 0 16px; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.chain-item { margin: 0; }
.chain-step { width: 100%; height: 100%; display: flex; flex-direction: column; gap: 8px; text-align: left; background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; font: inherit; color: var(--ink); cursor: pointer; }
.chain-step:hover { border-color: var(--warning-line); }
.chain-step.is-sel { border-color: var(--burgundy); background: var(--sand); box-shadow: var(--shadow-soft); }
.chain-num { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; background: var(--burgundy); color: var(--panel-strong); font-weight: 800; font-size: 14px; }
.chain-title { display: block; font-weight: 700; color: var(--burgundy-dark); font-size: 14px; }
.chain-tag { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.chain-detail { background: var(--panel-strong); border: 1px solid var(--line); border-left: 6px solid var(--warning-line); border-radius: var(--radius-sm); padding: 16px 18px; }
.chain-detail-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.chain-detail-head h3 { font-size: 16px; color: var(--burgundy-dark); }

/* Study map */
.model-grid-3 { grid-template-columns: repeat(3, 1fr); margin-top: 6px; }
.model-tile.is-sel { border-color: var(--burgundy); background: var(--sand); box-shadow: var(--shadow-soft); }
.entity-detail { margin-top: 16px; background: var(--panel-strong); border: 1px solid var(--line); border-left: 6px solid var(--burgundy); border-radius: var(--radius-sm); padding: 16px 18px; }
.entity-detail h3 { font-size: 16px; color: var(--burgundy-dark); margin-bottom: 6px; }
.kv { margin: 10px 0 0; display: flex; flex-direction: column; }
.kv-row { display: grid; grid-template-columns: 180px 1fr; gap: 12px; padding: 9px 0; border-bottom: 1px solid var(--sand); }
.kv-row:last-child { border-bottom: 0; }
.kv-row dt { font-weight: 700; color: var(--burgundy-dark); font-size: 13px; }
.kv-row dd { margin: 0; font-size: 14px; color: var(--ink); }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 4px; }

.frame-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 6px; }
.frame-card { background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px; }
.frame-card h3 { font-size: 15px; color: var(--burgundy-dark); margin-bottom: 6px; }
.frame-card p { margin: 0; }

/* Bars and diverging rows (SVG tracks, no inline styles) */
.dv-list { display: flex; flex-direction: column; gap: 6px; margin-top: 6px; }
.dv-row, .bar-row { display: grid; grid-template-columns: minmax(120px, 190px) 1fr 84px; align-items: center; gap: 10px; width: 100%; text-align: left; padding: 8px 10px; border: 1px solid transparent; border-radius: var(--radius-sm); background: var(--panel); font: inherit; color: var(--ink); }
.dv-row { cursor: pointer; }
.dv-row:hover { border-color: var(--warning-line); }
.dv-row.is-sel { border-color: var(--burgundy); background: var(--panel-strong); }
.dv-name, .bar-label { display: flex; flex-direction: column; gap: 3px; font-size: 13px; font-weight: 700; align-items: flex-start; }
.dv-badge { font-size: 10px; padding: 2px 8px; letter-spacing: 0.6px; }
.dv-svg, .bar-svg { width: 100%; height: 18px; display: block; }
.dv-val, .bar-val { font-size: 13px; font-weight: 700; text-align: right; color: var(--burgundy-dark); }
.svg-track { fill: var(--sand); }
.svg-mid { stroke: var(--burgundy-dark); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.svg-pos { fill: var(--burgundy); }
.svg-neg { fill: var(--warning-line); }
.svg-fill { fill: var(--burgundy); }
.svg-fill-dim { fill: var(--line); }
.svg-band-low { fill: var(--high-line); opacity: 0.55; }
.svg-band-mid { fill: var(--warning-line); opacity: 0.65; }
.svg-band-high { fill: var(--optimal-line); opacity: 0.65; }
.svg-band-gap { fill: var(--line); opacity: 0.45; }
.svg-band-all { fill: var(--sand); }
.svg-marker { fill: var(--ink); }
.scale-svg { width: 100%; height: 26px; display: block; margin-top: 8px; border-radius: 6px; }

.legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 12px; font-size: 12px; color: var(--muted); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.swatch { display: inline-block; width: 14px; height: 10px; border-radius: 3px; }
.swatch-pos { background: var(--burgundy); }
.swatch-neg { background: var(--warning-line); }

/* Dial */
.dial { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.dial-readout { font-size: 22px; font-weight: 800; color: var(--burgundy); margin: 2px 0 6px; }
.range { width: 100%; accent-color: var(--burgundy); }
.range-scale { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-top: 4px; }
.preset-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 4px; }
.content .ghost-btn.is-sel { background: var(--burgundy); color: var(--panel-strong); border-color: var(--burgundy); font-weight: 700; }

/* Pills and verdict badges */
.tag-up { background: var(--sand); border-color: var(--burgundy); color: var(--burgundy-dark); }
.tag-down { background: var(--panel-strong); border-color: var(--warning-line); color: var(--warning); }
.tag-zero { background: var(--sand-soft); border-color: var(--line); color: var(--muted); }
.sig-yes { background: var(--optimal-bg); border-color: var(--optimal-line); color: var(--optimal); }
.sig-no { background: var(--warning-bg); border-color: var(--warning-line); color: var(--warning); }

.data-table tr.is-sel td { background: var(--panel-strong); }
.link-btn { background: none; border: 0; padding: 0; font: inherit; font-weight: 700; color: var(--burgundy); text-decoration: underline; cursor: pointer; text-align: left; }
.table-abbr { display: block; font-size: 11px; font-weight: 400; color: var(--muted); }

/* Brief builder */
.brief-box { background: var(--panel-strong); border: 1px dashed var(--line); border-radius: var(--radius-sm); padding: 14px 16px; min-height: 90px; }
.brief-box h3 { font-size: 14px; color: var(--burgundy-dark); margin: 10px 0 4px; }
.brief-box h3:first-child { margin-top: 0; }
.brief-box ul { margin: 0 0 6px; padding-left: 20px; font-size: 14px; }
.brief-box li { margin-bottom: 4px; }
.brief-empty { color: var(--muted); font-size: 14px; margin: 0; }

@media (max-width: 1120px) {
  .chain { grid-template-columns: repeat(2, 1fr); }
  .model-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .frame-grid { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .kv-row { grid-template-columns: 1fr; gap: 2px; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .chain { grid-template-columns: 1fr; }
  .model-grid, .model-grid-3 { grid-template-columns: 1fr; }
  .dv-row, .bar-row { grid-template-columns: 1fr 84px; }
  .dv-name, .bar-label { grid-column: 1 / -1; }
  .seg-btn { padding: 8px 10px; font-size: 12px; }
}

/* ---- Polish ---- */
.brand-foot em { color: inherit; }
.chip-tag, .chain-tag, #chainTag { text-transform: none; }
.chip-tag { letter-spacing: 0.3px; }
.chain-tag { letter-spacing: 0.3px; }
.alert-box + .metric-grid { margin-top: 14px; }
.two-col-wide { grid-template-columns: 1.25fr 1fr; }
.swatch-low { background: var(--high-line); opacity: 0.55; }
.swatch-mid { background: var(--warning-line); opacity: 0.65; }
.swatch-high { background: var(--optimal-line); opacity: 0.65; }
@media (max-width: 820px) {
  .two-col-wide { grid-template-columns: 1fr; }
}