: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;

  --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); }

.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; 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; }
.sub-head { font-size: 14px; color: var(--burgundy-dark); margin-bottom: 10px; }

.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; }
.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: #fff8e6; 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 ---- */

.chain-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.chain-step { display: flex; align-items: center; gap: 8px; background: var(--panel-strong); border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; font-size: 13px; font-weight: 600; color: var(--muted); cursor: pointer; }
.chain-step .chain-num { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; border-radius: 999px; background: var(--burgundy); color: #fff8e6; font-size: 11px; font-weight: 800; }
.chain-step.is-sel { border-color: var(--warning-line); background: #fff2cf; color: var(--ink); }
.chain-step:not(:last-child)::after { content: none; }

.timeline-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.timeline-step { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 13px; color: var(--muted); cursor: pointer; min-width: 140px; flex: 1 1 140px; }
.timeline-step .t-title { font-weight: 700; color: var(--burgundy-dark); }
.timeline-step.is-sel { border-color: var(--warning-line); background: #fff2cf; }

.seg-control { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.seg-btn { font: inherit; font-size: 13px; font-weight: 700; padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel); color: var(--muted); cursor: pointer; }
.seg-btn.is-sel { background: var(--burgundy); border-color: var(--burgundy); color: #fff8e6; }
.seg-btn:hover:not(.is-sel) { border-color: var(--warning-line); }

.inner-card { background: var(--panel-strong); }

.body-diagram-wrap { display: flex; align-items: center; justify-content: center; background: var(--panel-strong); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; }
.body-diagram { width: 100%; max-width: 220px; height: auto; }
.sensor-dot { cursor: pointer; }
.sensor-dot circle { fill: var(--burgundy); stroke: #fff8e6; stroke-width: 2; }
.sensor-dot:hover circle { fill: var(--warning-line); }
.sensor-dot.is-sel circle { fill: var(--warning); stroke: var(--burgundy-dark); }
.body-outline { fill: #fbe9c2; stroke: var(--line); stroke-width: 2; }

.compare-block { margin-bottom: 18px; }
.compare-label { display: flex; justify-content: space-between; align-items: baseline; font-size: 13px; font-weight: 700; color: var(--burgundy-dark); margin-bottom: 6px; }
.compare-note { font-size: 12px; color: var(--muted); font-weight: 400; }
.bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.bar-row-label { width: 108px; font-size: 12px; color: var(--muted); flex-shrink: 0; }
.bar-track { flex: 1; background: #f3e6c6; border-radius: 999px; height: 16px; overflow: hidden; border: 1px solid var(--line); }
.bar-fill { height: 100%; border-radius: 999px; }
.bar-fill.is-path { background: var(--high); }
.bar-fill.is-physio { background: var(--optimal); }
.bar-row-value { width: 92px; text-align: right; font-size: 12px; font-weight: 700; color: var(--ink); flex-shrink: 0; }

.robust-yes { color: var(--optimal); font-weight: 800; }
.robust-no { color: var(--muted); font-weight: 700; }

.brief-list { margin: 8px 0 0; padding-left: 18px; }
.brief-list li { margin-bottom: 4px; }