/*
 * Risk Code Hub — Shared Stylesheet
 * Version: 1.0 — May 2026
 *
 * HOW TO USE:
 * 1. Link this file in every hub page: <link rel="stylesheet" href="../hub-styles.css">
 * 2. Add a small inline <style> block with ONLY the hub-specific colour variables (see _template.html)
 * 3. Do NOT repeat any structural CSS inline — this file owns it.
 *
 * CANONICAL VARIABLE NAMES (define in each hub's inline :root block):
 *   --hub-primary      Main hub colour   (nav active, h2, table headers, card top borders)
 *   --hub-dark         Darker shade      (h3, box headings)
 *   --hub-light        Light tint        (background for secondary boxes/scenarios)
 *   --hub-accent       Accent/underline  (h2 border, nav active underline — usually #c8a84b gold)
 *   --hub-secondary    Optional 2nd colour (e.g. a flood-blue, cyber-purple used within a hub)
 *   --hub-secondary2   Optional 3rd colour
 *   --header-gradient  Full CSS gradient string for <header> background
 *   --header-sub       Subtitle/secondary text colour inside <header>
 *
 * UNIVERSAL VARIABLES (defined here — do NOT override):
 *   --bg, --text, --muted, --border
 */

/* ─── UNIVERSAL TOKENS ─────────────────────────────────────────────────────── */
:root {
  --bg:     #f4f7fb;
  --text:   #1e2d3d;
  --muted:  #6b7c93;
  --border: #c8d4e0;

  /* Badge colours — fixed across all hubs */
  --badge-v-bg:  #e6f4ea; --badge-v-tx:  #1a5c28;
  --badge-e-bg:  #fef3e2; --badge-e-tx:  #7a4500;
  --badge-i-bg:  #e8eaf6; --badge-i-tx:  #1a237e;
  --badge-g-bg:  #fce4ec; --badge-g-tx:  #880e4f;

  /* Info-box colours — fixed */
  --box-blue-bg: #e3f2fd; --box-blue-bd: #1565c0;
  --box-green-bg:#e8f5e9; --box-green-bd:#2e7d32;
  --box-amber-bg:#fff8e1; --box-amber-bd:#f59e0b;
  --box-red-bg:  #fdecea; --box-red-bd:  #c62828;
  --box-gap-bg:  #fde8e8; --box-gap-bd:  #8b3a2a;

  /* Fallback hub colours — overridden per hub */
  --hub-primary:   #0d2240;
  --hub-dark:      #061525;
  --hub-light:     #e8f0fa;
  --hub-accent:    #c8a84b;
  --hub-secondary: #1565c0;
  --hub-secondary2:#2e7d32;
  --header-gradient: linear-gradient(135deg,#0d2240 0%,#1a3a6a 55%,#0d2240 100%);
  --header-sub:    #b8ccdf;
}

/* ─── RESET ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing:border-box; margin:0; padding:0; }

/* ─── BASE ──────────────────────────────────────────────────────────────────── */
body {
  font-family:'Segoe UI',Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

/* ─── HEADER ────────────────────────────────────────────────────────────────── */
header {
  background:var(--header-gradient);
  color:#fff;
  padding:40px;
}
header .inner { max-width:1100px; margin:0 auto; }
.breadcrumb { font-size:0.8rem; color:var(--header-sub); margin-bottom:6px; }
.breadcrumb a { color:var(--hub-accent); text-decoration:none; }
.breadcrumb a:hover { text-decoration:underline; }
header .tag {
  font-size:0.75rem; letter-spacing:3px; text-transform:uppercase;
  color:var(--hub-accent); margin-bottom:8px; font-weight:700;
}
header h1 { font-size:2rem; font-weight:700; line-height:1.25; }
header p  { margin-top:10px; color:var(--header-sub); font-size:0.95rem; max-width:720px; line-height:1.7; }

/* ─── NAV TABS ──────────────────────────────────────────────────────────────── */
nav {
  background:#fff;
  border-bottom:2px solid var(--border);
  padding:0 40px;
  display:flex;
  gap:4px;
  overflow-x:auto;
}
nav a {
  display:block;
  padding:14px 16px;
  font-size:0.82rem;
  font-weight:600;
  text-decoration:none;
  color:var(--muted);
  border-bottom:3px solid transparent;
  white-space:nowrap;
  transition:color .2s, border-color .2s;
}
nav a:hover,
nav a.active { color:var(--hub-primary); border-bottom-color:var(--hub-accent); }

/* ─── MAIN LAYOUT ───────────────────────────────────────────────────────────── */
main { max-width:1100px; margin:0 auto; padding:50px 30px; }

/* ─── TYPOGRAPHY ────────────────────────────────────────────────────────────── */
h2 {
  font-size:1.35rem;
  color:var(--hub-primary);
  margin:44px 0 16px;
  padding-bottom:10px;
  border-bottom:2px solid var(--hub-accent);
}
h3 { font-size:1.05rem; color:var(--hub-dark); margin:24px 0 10px; }
h4 { font-size:0.92rem; color:var(--hub-primary); margin:16px 0 8px; font-weight:700; }
p  { line-height:1.8; color:var(--text); margin-bottom:14px; font-size:0.93rem; }
ul, ol { padding-left:20px; margin-bottom:14px; }
li { font-size:0.9rem; line-height:1.75; margin-bottom:6px; }
strong { color:var(--hub-dark); }

/* ─── BADGES ────────────────────────────────────────────────────────────────── */
.badge {
  display:inline-block;
  font-size:0.66rem; font-weight:700;
  padding:1px 7px; border-radius:10px;
  letter-spacing:0.4px; margin-left:3px;
  vertical-align:middle;
}
.b-v, .b-verified    { background:var(--badge-v-bg); color:var(--badge-v-tx); }
.b-e, .b-estimate    { background:var(--badge-e-bg); color:var(--badge-e-tx); }
.b-i, .b-illustrative{ background:var(--badge-i-bg); color:var(--badge-i-tx); }
.b-g, .b-gap         { background:var(--badge-g-bg); color:var(--badge-g-tx); }

/* ─── STATS ROW ─────────────────────────────────────────────────────────────── */
.stats-row {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(155px,1fr));
  gap:14px; margin:28px 0 36px;
}
.stat-box {
  background:#fff; border:1px solid var(--border);
  border-radius:10px; padding:18px; text-align:center;
  border-top:3px solid var(--hub-accent);
}
.stat-box .num  { font-size:1.5rem; font-weight:800; color:var(--hub-primary); }
.stat-box .label{ font-size:0.74rem; color:var(--muted); margin-top:4px; line-height:1.4; }

/* ─── RISK CODE TABLE ───────────────────────────────────────────────────────── */
.code-pill {
  display:inline-block;
  background:var(--hub-primary); color:#fff;
  font-size:0.72rem; font-weight:700;
  padding:3px 8px; border-radius:4px; letter-spacing:1px;
}

/* ─── GENERIC CARD GRID ─────────────────────────────────────────────────────── */
.card-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:16px; margin:20px 0;
}
.card {
  background:#fff; border:1px solid var(--border);
  border-radius:10px; padding:20px 22px;
  border-top:4px solid var(--hub-primary);
}
.card h4 { color:var(--hub-primary); margin-top:0; }
.card p  { font-size:0.85rem; color:var(--muted); margin:0; line-height:1.6; }
.card ul { padding-left:16px; margin:0; }
.card li { font-size:0.83rem; margin-bottom:5px; }

/* Card left-border variant (used in risk-mitigation etc.) */
.card-left { border-top:none; border-left:4px solid var(--hub-primary); }

/* Module navigation cards (overview page) */
.mod-card {
  background:#fff; border:1px solid var(--border);
  border-radius:10px; padding:18px 20px;
  text-decoration:none; color:inherit; display:block;
  transition:border-color .2s, box-shadow .2s;
}
.mod-card:hover { border-color:var(--hub-primary); box-shadow:0 3px 12px rgba(0,0,0,0.1); }
.mod-card .mod-num {
  font-size:0.72rem; font-weight:800; text-transform:uppercase;
  letter-spacing:1.5px; color:var(--hub-primary); margin-bottom:6px;
}
.mod-card h4 { font-size:0.9rem; font-weight:700; margin-bottom:4px; color:var(--text); }
.mod-card p  { font-size:0.79rem; color:var(--muted); margin:0; line-height:1.4; }
.module-cards {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:14px; margin:24px 0;
}

/* ─── TABLES ────────────────────────────────────────────────────────────────── */
.tbl-wrap {
  background:#fff; border:1px solid var(--border);
  border-radius:10px; overflow:hidden; margin:20px 0;
}
table { width:100%; border-collapse:collapse; font-size:0.87rem; }
th {
  background:var(--hub-primary); color:#fff;
  padding:10px 14px; text-align:left;
  font-size:0.82rem; letter-spacing:0.3px;
}
td {
  padding:9px 14px; border-bottom:1px solid var(--border);
  vertical-align:top; line-height:1.5;
}
tr:last-child td { border-bottom:none; }
tr:nth-child(even) td { background:#f8fafc; }
td strong { color:var(--hub-dark); }

/* Score / traffic-light cells */
td.green, .cell-green { background:#e6f4ea; color:#1a5c28; font-weight:700; font-size:0.82rem; }
td.amber, .cell-amber { background:#fef3e2; color:#7a4500; font-weight:700; font-size:0.82rem; }
td.red,   .cell-red   { background:#fde8e8; color:#8b0000; font-weight:700; font-size:0.82rem; }

/* ─── INFO / CALLOUT BOXES ──────────────────────────────────────────────────── */
.info-box {
  border-radius:10px; padding:18px 22px;
  margin:18px 0; font-size:0.89rem; line-height:1.7;
}
.info-box strong { display:block; font-size:0.93rem; margin-bottom:6px; }
.info-box.blue   { background:var(--box-blue-bg);  border-left:4px solid var(--box-blue-bd);  }
.info-box.green  { background:var(--box-green-bg); border-left:4px solid var(--box-green-bd); }
.info-box.amber  { background:var(--box-amber-bg); border-left:4px solid var(--box-amber-bd); }
.info-box.red    { background:var(--box-red-bg);   border-left:4px solid var(--box-red-bd);   }
.info-box.hub    { background:var(--hub-light);    border-left:4px solid var(--hub-primary);  }

.warn-box {
  background:var(--box-amber-bg); border:2px solid var(--box-amber-bd);
  border-radius:12px; padding:22px 26px; margin:24px 0;
}
.warn-box h4 { color:#7a4500; font-size:0.95rem; margin-bottom:8px; }
.warn-box p  { font-size:0.87rem; margin:0; color:#5a3500; }

.gap-box {
  background:var(--box-gap-bg); border:2px solid var(--box-gap-bd);
  border-radius:10px; padding:18px 22px; margin:12px 0;
  border-left:4px solid var(--box-red-bd);
}
.gap-box h4 { color:var(--box-gap-bd); font-size:0.87rem; margin-bottom:4px; }
.gap-box p  { font-size:0.83rem; margin:0; }

/* ─── FORMULA BOX ───────────────────────────────────────────────────────────── */
.formula-box {
  background:var(--hub-primary); color:#e8f0fa;
  border-radius:10px; padding:22px 28px; margin:20px 0;
  font-family:monospace; font-size:0.9rem; line-height:2;
}
.formula-box .formula-title {
  font-family:'Segoe UI',Arial,sans-serif;
  font-size:0.75rem; letter-spacing:2px; text-transform:uppercase;
  color:var(--hub-accent); margin-bottom:10px; font-weight:700;
}
.formula-box span.var  { color:#a8d8a8; }
.formula-box span.note { font-family:'Segoe UI',Arial,sans-serif; font-size:0.78rem; color:#8899aa; font-style:italic; }

/* ─── TIMELINE ──────────────────────────────────────────────────────────────── */
.timeline { position:relative; padding-left:40px; }
.timeline::before {
  content:''; position:absolute; left:14px; top:0; bottom:0;
  width:2px; background:var(--border);
}
.tl-item  { position:relative; margin-bottom:28px; }
.tl-dot   {
  position:absolute; left:-33px; top:4px;
  width:16px; height:16px; border-radius:50%;
  border:2px solid #fff;
  background:var(--hub-primary);
  box-shadow:0 0 0 2px var(--hub-primary);
}
.tl-year  { font-size:0.78rem; font-weight:800; text-transform:uppercase; letter-spacing:1px; color:var(--muted); margin-bottom:3px; }
.tl-title { font-size:0.98rem; font-weight:700; color:var(--hub-primary); margin-bottom:5px; }
.tl-body  { font-size:0.87rem; color:var(--text); line-height:1.65; }
.tl-loss  {
  display:inline-block; font-size:0.78rem; font-weight:700;
  background:var(--badge-e-bg); color:var(--badge-e-tx);
  padding:2px 8px; border-radius:4px; margin-top:5px;
}
.tl-tag   {
  display:inline-block; font-size:0.7rem; font-weight:700;
  padding:2px 8px; border-radius:12px; margin-right:6px; margin-bottom:6px;
  background:var(--hub-primary); color:#fff;
}
.legend { display:flex; flex-wrap:wrap; gap:12px; margin:0 0 36px; }
.leg-item { display:flex; align-items:center; gap:7px; font-size:0.82rem; color:var(--text); }
.dot { width:12px; height:12px; border-radius:50%; flex-shrink:0; }

/* ─── CHART.JS WRAPPER ──────────────────────────────────────────────────────── */
.chart-wrap {
  background:#fff; border:1px solid var(--border);
  border-radius:12px; padding:28px; margin:24px 0;
}
.chart-wrap h3     { font-size:1rem; color:var(--hub-primary); margin-bottom:4px; }
.chart-wrap .sub   { font-size:0.82rem; color:var(--muted); margin-bottom:18px; }
.chart-wrap canvas { max-height:340px; }

/* ─── MARKET CYCLE BLOCKS ───────────────────────────────────────────────────── */
.cycle-block {
  background:#fff; border:1px solid var(--border);
  border-radius:10px; padding:18px 22px; margin:12px 0;
  border-left:5px solid var(--hub-primary);
}
.cycle-block.hard   { border-left-color:var(--box-red-bd); }
.cycle-block.soft   { border-left-color:var(--box-blue-bd); }
.cycle-block.reform { border-left-color:var(--hub-accent); }
.cycle-block .cy-date {
  font-size:0.75rem; font-weight:800; text-transform:uppercase;
  letter-spacing:1.5px; color:var(--hub-primary); margin-bottom:6px;
}
.cycle-block.hard .cy-date   { color:var(--box-red-bd); }
.cycle-block.soft .cy-date   { color:var(--box-blue-bd); }
.cycle-block.reform .cy-date { color:#7a5200; }
.cycle-block h4 { font-size:0.95rem; color:var(--hub-primary); margin-bottom:6px; }
.cycle-block p  { font-size:0.87rem; margin:0; }

/* ─── ROE CARDS ─────────────────────────────────────────────────────────────── */
.roe-grid {
  display:grid; grid-template-columns:1fr 1fr 1fr;
  gap:16px; margin:20px 0;
}
.roe-card {
  background:#fff; border:1px solid var(--border);
  border-radius:10px; padding:20px 22px; text-align:center;
}
.roe-card.bull { border-top:4px solid #2d6a2d; }
.roe-card.base { border-top:4px solid var(--hub-accent); }
.roe-card.bear { border-top:4px solid #8b3a2a; }
.roe-card .roe-label {
  font-size:0.75rem; font-weight:800; letter-spacing:1.5px;
  text-transform:uppercase; color:var(--muted);
}
.roe-card .roe-val { font-size:2rem; font-weight:800; margin:8px 0; }
.roe-card.bull .roe-val { color:#2d6a2d; }
.roe-card.base .roe-val { color:#7a5200; }
.roe-card.bear .roe-val { color:#8b3a2a; }
.roe-card .roe-note { font-size:0.85rem; color:var(--muted); }

/* ─── COVERAGE TOWER ────────────────────────────────────────────────────────── */
.tower { display:flex; flex-direction:column; gap:6px; margin:24px 0; }
.tower-layer {
  border-radius:8px; padding:14px 20px;
  display:flex; justify-content:space-between; align-items:center;
  flex-wrap:wrap; gap:8px;
}
.tower-layer h4 { font-size:0.9rem; font-weight:700; color:#fff; }
.tower-layer p  { font-size:0.82rem; color:rgba(255,255,255,0.88); margin:0; }
.tower-layer .amt { font-size:1rem; font-weight:700; color:#fff; white-space:nowrap; }

/* ─── WORKFLOW STEPS ────────────────────────────────────────────────────────── */
.workflow { display:flex; flex-direction:column; gap:0; margin:20px 0; }
.wf-step  { display:flex; gap:16px; align-items:flex-start; }
.wf-num   {
  width:32px; height:32px; border-radius:50%;
  background:var(--hub-primary); color:#fff;
  font-size:0.85rem; font-weight:700;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0; margin-top:2px;
}
.wf-body  {
  padding-bottom:20px;
  border-left:2px dashed var(--border);
  padding-left:16px; flex:1;
}
.wf-step:last-child .wf-body { border-left:none; }
.wf-body h4 { font-size:0.88rem; font-weight:700; color:var(--hub-dark); margin-bottom:4px; }
.wf-body p  { font-size:0.84rem; margin:0; }

/* ─── CASE STUDY BOX ────────────────────────────────────────────────────────── */
.case-study {
  background:#fff; border:1px solid var(--border);
  border-radius:12px; padding:24px 28px; margin:24px 0;
  border-top:4px solid var(--hub-primary);
}
.case-study h3 { margin-top:0; color:var(--hub-primary); }
.cs-grid {
  display:grid; grid-template-columns:1fr 1fr;
  gap:20px; margin-top:16px;
}
.cs-box { background:var(--bg); border-radius:8px; padding:14px 16px; }
.cs-box h5 {
  font-size:0.82rem; font-weight:700; color:var(--muted);
  text-transform:uppercase; letter-spacing:.04em; margin-bottom:8px;
}
.cs-box p { margin:0; font-size:0.87rem; }

/* ─── WORKED EXAMPLE BOX ────────────────────────────────────────────────────── */
.example-box {
  background:#fff; border:2px solid var(--hub-primary);
  border-radius:12px; padding:28px 32px; margin:24px 0;
}
.example-box h3 { color:var(--hub-dark); margin-top:0; font-size:1.05rem; }
.example-box .scenario {
  background:var(--hub-light); border-radius:8px;
  padding:14px 18px; margin:14px 0;
  font-size:0.88rem; line-height:1.7;
}
.example-box table { margin:14px 0; }

/* ─── REFERENCES — SOURCE LIST ──────────────────────────────────────────────── */
.source-list { list-style:none; padding:0; margin:16px 0; }
.source-list li {
  display:flex; gap:12px; align-items:flex-start;
  padding:10px 14px; background:#fff;
  border:1px solid var(--border); border-radius:8px; margin-bottom:8px;
}
.source-list li .src-badge { min-width:80px; text-align:center; }
.source-list li .src-content { flex:1; }
.source-list li .src-name { font-weight:700; font-size:0.9rem; color:var(--hub-primary); }
.source-list li .src-desc { font-size:0.83rem; color:var(--muted); margin-top:2px; line-height:1.5; }
.source-list li a { color:var(--box-blue-bd); font-size:0.82rem; text-decoration:none; word-break:break-all; }
.source-list li a:hover { text-decoration:underline; }

/* Confidence tier cards (references page) */
.tier-grid {
  display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:14px; margin:20px 0;
}
.tier-card { background:#fff; border:1px solid var(--border); border-radius:10px; padding:16px 18px; }
.tier-card h4 { font-size:0.9rem; font-weight:700; margin-bottom:6px; }
.tier-card p  { font-size:0.84rem; margin:0; }
.t-verified h4    { color:var(--badge-v-tx); }
.t-estimate h4    { color:var(--badge-e-tx); }
.t-illustrative h4{ color:var(--badge-i-tx); }
.t-gap h4         { color:var(--badge-g-tx); }

/* Confidence audit table colour helpers */
.conf-v { color:var(--badge-v-tx); font-weight:700; }
.conf-e { color:var(--badge-e-tx); font-weight:700; }
.conf-i { color:var(--badge-i-tx); font-weight:700; }
.conf-g { color:var(--badge-g-tx); font-weight:700; }

/* ─── FOOTER ────────────────────────────────────────────────────────────────── */
footer {
  background:var(--hub-primary);
  color:rgba(255,255,255,0.55);
  text-align:center; padding:24px;
  font-size:0.82rem; margin-top:60px;
}
footer a { color:var(--hub-accent); text-decoration:none; }
footer a:hover { text-decoration:underline; }

/* ─── RESPONSIVE ────────────────────────────────────────────────────────────── */
@media (max-width:700px) {
  header { padding:24px 20px; }
  header h1 { font-size:1.5rem; }
  nav { padding:0 12px; }
  main { padding:30px 16px; }
  .roe-grid { grid-template-columns:1fr; }
  .cs-grid  { grid-template-columns:1fr; }
  .stats-row { grid-template-columns:repeat(auto-fill,minmax(130px,1fr)); }
}

@media (max-width:480px) {
  .card-grid   { grid-template-columns:1fr; }
  .module-cards{ grid-template-columns:1fr; }
  .tier-grid   { grid-template-columns:1fr; }
}