/* ==========================================================================
   FxMath Harmonic Hunter — Docs Theme
   Shared stylesheet for the HTML documentation suite
   ========================================================================== */

:root {
  --bg: #0d1117;
  --bg-alt: #11161d;
  --panel: #161b26;
  --panel-2: #1b2230;
  --border: #2a3444;
  --border-2: #3b4a63;
  --text: #d7dee8;
  --text-dim: #8b98ab;
  --accent: #2f81f7;
  --accent-2: #58a6ff;
  --green: #3fb950;
  --red: #f85149;
  --orange: #d29922;
  --cyan: #39c5cf;
  --purple: #bc8cff;
  --mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  padding-bottom: 80px;
}

/* ---------- Top navigation bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 54px;
  display: flex;
  align-items: center;
  gap: 22px;
  white-space: nowrap;
  overflow-x: auto;
}
.topbar .brand {
  font-weight: 700;
  color: #fff;
  font-size: 14px;
  letter-spacing: 0.4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.topbar .brand .logo {
  width: 26px; height: 26px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; color: #fff; font-weight: 800;
}
.topbar a.nav {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
.topbar a.nav:hover { color: #fff; }
.topbar a.nav.active { color: var(--accent-2); border-bottom-color: var(--accent); }
.topbar .spacer { flex: 1; }
.topbar .ver { font-size: 12px; color: var(--text-dim); font-family: var(--mono); }

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 270px 1fr;
  gap: 32px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 28px 24px 0;
}
.layout.no-sidebar { grid-template-columns: 1fr; max-width: 1200px; }

/* ---------- Sidebar ---------- */
.sidebar {
  position: sticky;
  top: 78px;
  align-self: start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 8px;
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
.sidebar h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-dim);
  margin: 18px 0 8px;
}
.sidebar a {
  display: block;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  padding: 4px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 4px 4px 0;
  transition: all .12s;
}
.sidebar a:hover { color: #fff; background: var(--panel); }
.sidebar a.active {
  color: var(--accent-2);
  border-left-color: var(--accent);
  background: rgba(47, 129, 247, 0.08);
}

/* ---------- Content ---------- */
.content { min-width: 0; }
.content h1 {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}
.content h1 .sub { font-size: 14px; color: var(--text-dim); font-weight: 500; letter-spacing: 0; }
.content h2 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin: 42px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 70px;
}
.content h2 .anchor { color: var(--accent); margin-right: 6px; }
.content h3 {
  font-size: 16.5px;
  font-weight: 600;
  color: var(--accent-2);
  margin: 26px 0 10px;
  scroll-margin-top: 70px;
}
.content p { margin: 10px 0; }
.content ul, .content ol { margin: 10px 0 10px 24px; }
.content li { margin: 5px 0; }
.content strong { color: #fff; }
.content code {
  font-family: var(--mono);
  font-size: 12.8px;
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.15);
  color: #9ecbff;
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---------- Hero / lead ---------- */
.lead {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 780px;
  margin-bottom: 8px;
}
.meta-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 3px 12px;
  font-size: 12.5px;
  color: var(--text-dim);
}
.badge .dot { width: 8px; height: 8px; border-radius: 50%; }
.badge.green .dot { background: var(--green); }
.badge.red .dot { background: var(--red); }
.badge.orange .dot { background: var(--orange); }
.badge.cyan .dot { background: var(--cyan); }
.badge.purple .dot { background: var(--purple); }
.badge.blue .dot { background: var(--accent); }

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin: 18px 0;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-2);
  box-shadow: 0 6px 24px rgba(0,0,0,0.35);
}
.card h4 { color: #fff; font-size: 15px; margin-bottom: 6px; }
.card p { font-size: 13.5px; color: var(--text-dim); margin: 0; }
.card .card-icon { font-size: 22px; margin-bottom: 8px; }

/* ---------- Tables ---------- */
.table-wrap {
  overflow-x: auto;
  margin: 14px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  min-width: 640px;
}
thead th {
  background: var(--panel-2);
  color: #fff;
  text-align: left;
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-2);
  white-space: nowrap;
  position: sticky;
  top: 0;
}
tbody td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
tbody tr:nth-child(even) { background: rgba(255,255,255,0.015); }
tbody tr:hover { background: rgba(47, 129, 247, 0.05); }
td .name {
  font-family: var(--mono);
  font-size: 12.5px;
  color: #e6edf3;
  white-space: nowrap;
}
td .def { color: var(--orange); font-family: var(--mono); font-size: 12.5px; white-space: nowrap; }
td .type { color: var(--purple); font-family: var(--mono); font-size: 12px; }
td .desc { color: var(--text-dim); font-size: 13px; }
td .section { color: var(--cyan); font-weight: 700; text-transform: uppercase; letter-spacing: 1px; font-size: 12px; }

/* ---------- Callouts ---------- */
.callout {
  border-radius: 8px;
  padding: 12px 16px;
  margin: 16px 0;
  border: 1px solid;
  font-size: 14px;
}
.callout.info { background: rgba(47, 129, 247, 0.08); border-color: rgba(47, 129, 247, 0.35); }
.callout.warn { background: rgba(210, 153, 34, 0.08); border-color: rgba(210, 153, 34, 0.4); }
.callout.danger { background: rgba(248, 81, 73, 0.07); border-color: rgba(248, 81, 73, 0.4); }
.callout.ok { background: rgba(63, 185, 80, 0.07); border-color: rgba(63, 185, 80, 0.4); }
.callout .ct { font-weight: 700; display: block; margin-bottom: 4px; }

/* ---------- Code blocks ---------- */
pre {
  background: #0a0e14;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  overflow-x: auto;
  margin: 14px 0;
  font-size: 13px;
  line-height: 1.6;
}
pre code {
  background: none;
  border: none;
  padding: 0;
  color: #c9d4e3;
  font-size: 13px;
}
.kw { color: #c678dd; }
.st { color: #98c379; }
.cm { color: #5c6370; font-style: italic; }
.fn { color: #61afef; }
.nu { color: #d19a66; }

/* ---------- Steps / timeline ---------- */
.steps { counter-reset: step; margin: 14px 0; }
.step {
  position: relative;
  padding: 12px 16px 12px 56px;
  margin: 10px 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 16px; top: 14px;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
}
.step h5 { color: #fff; font-size: 14px; margin-bottom: 3px; }
.step p { font-size: 13.5px; color: var(--text-dim); margin: 0; }

/* ---------- Tag pills ---------- */
.pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 10px;
  margin-right: 4px;
  border: 1px solid;
}
.pill.input { color: #9ecbff; border-color: rgba(88,166,255,.4); background: rgba(88,166,255,.08); }
.pill.internal { color: var(--purple); border-color: rgba(188,140,255,.4); background: rgba(188,140,255,.08); }
.pill.flag { color: var(--orange); border-color: rgba(210,153,34,.4); background: rgba(210,153,34,.08); }

/* ---------- KPI row ---------- */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 18px 0;
}
.kpi {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.kpi .k { font-size: 11.5px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-dim); }
.kpi .v { font-size: 22px; font-weight: 800; color: #fff; margin-top: 4px; font-family: var(--mono); }
.kpi .v.green { color: var(--green); }
.kpi .v.red { color: var(--red); }
.kpi .v.cyan { color: var(--cyan); }
.kpi .v.orange { color: var(--orange); }
.kpi .v.purple { color: var(--purple); }

/* ---------- Mermaid ---------- */
.mermaid { margin: 18px 0; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 14px; overflow-x: auto; }
.mermaid svg { max-width: 100%; }

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 12.5px;
  margin-top: 60px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

/* ---------- Interactive demo (panel mock) ---------- */
.demo-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin: 16px 0;
  font-size: 13px;
}
.demo-panel .demo-head {
  display: flex; gap: 18px; flex-wrap: wrap; align-items: center;
  padding-bottom: 10px; border-bottom: 1px solid var(--border); margin-bottom: 10px;
}
.demo-panel .demo-head .hl { color: #fff; font-weight: 700; }
.demo-panel .demo-filters { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.demo-panel .fbtn {
  background: var(--panel-2); border: 1px solid var(--border-2); color: var(--text);
  border-radius: 5px; padding: 3px 10px; font-size: 12px; cursor: pointer;
  font-family: var(--mono);
}
.demo-panel .fbtn.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.demo-panel table { min-width: 100%; font-size: 12.5px; }
.demo-panel td, .demo-panel th { padding: 5px 8px; }
.demo-panel .buy { color: var(--green); font-weight: 600; }
.demo-panel .sell { color: var(--red); font-weight: 600; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 18px 0 0; }
.tab {
  padding: 8px 16px;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 600;
  background: transparent;
}
.tab:hover { color: #fff; }
.tab.active { background: var(--panel); border-color: var(--border); color: var(--accent-2); }
.tab-pane { display: none; background: var(--panel); border: 1px solid var(--border); border-top: none; border-radius: 0 0 8px 8px; padding: 16px; }
.tab-pane.active { display: block; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; padding: 20px 14px 0; }
  .sidebar { position: static; max-height: none; border-bottom: 1px solid var(--border); padding-bottom: 12px; margin-bottom: 8px; }
}
@media print {
  .topbar, .sidebar { display: none; }
  .layout { grid-template-columns: 1fr; max-width: 100%; }
  body { background: #fff; color: #111; }
  .content h2 { color: #111; }
}