@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&display=swap');

:root {
  --bg:        #0a0b0d;
  --bg2:       #111318;
  --bg3:       #181c23;
  --bg4:       #1e2330;
  --border:    #252b38;
  --border2:   #2e3648;
  --text:      #c8d0e0;
  --text2:     #7a8499;
  --text3:     #4a5166;
  --amber:     #e8a020;
  --amber2:    #f0c060;
  --red:       #e03030;
  --red2:      #ff5555;
  --teal:      #20b090;
  --teal2:     #40d0b0;
  --blue:      #3070c0;
  --blue2:     #50a0f0;
  --coral:     #d04030;
  --coral2:    #f06050;
  --green:     #40a040;
  --green2:    #60c060;
  --accent:    #e8a020;

  --mono: 'IBM Plex Mono', monospace;
  --sans: 'IBM Plex Sans', sans-serif;

  --r: 4px;
  --r2: 8px;
  --nav-h: 52px;
}

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

html { font-size: 14px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 24px; gap: 0;
}

.nav-brand {
  font-family: var(--mono);
  font-size: 11px; font-weight: 600;
  color: var(--amber);
  letter-spacing: .1em;
  text-transform: uppercase;
  white-space: nowrap;
  margin-right: 32px;
  text-decoration: none;
}

.nav-links {
  display: flex; align-items: center; gap: 2px;
  overflow-x: auto; flex: 1;
}

.nav-links a {
  font-family: var(--mono);
  font-size: 10px; font-weight: 500;
  color: var(--text2);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--r);
  white-space: nowrap;
  letter-spacing: .04em;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text); background: var(--bg3); }
.nav-links a.active { color: var(--amber); background: rgba(232,160,32,.08); }

/* ── PAGE LAYOUT ── */
.page { max-width: 1200px; margin: 0 auto; padding: 32px 24px 64px; }
.page-wide { max-width: 100%; padding: 24px 24px 64px; }

/* ── TYPOGRAPHY ── */
h1 {
  font-family: var(--mono);
  font-size: 18px; font-weight: 600;
  color: var(--text);
  letter-spacing: -.01em;
  line-height: 1.3;
}
h2 {
  font-family: var(--mono);
  font-size: 13px; font-weight: 600;
  color: var(--text2);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
h3 {
  font-family: var(--sans);
  font-size: 14px; font-weight: 500;
  color: var(--text);
  margin-bottom: 8px;
}
p { font-size: 13px; color: var(--text2); line-height: 1.7; }
p + p { margin-top: 10px; }

.mono { font-family: var(--mono); }
.label {
  font-family: var(--mono);
  font-size: 10px; font-weight: 500;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* ── CARDS ── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 20px;
}
.card-sm { padding: 14px 16px; }

/* ── BADGES ── */
.badge {
  display: inline-flex; align-items: center;
  font-family: var(--mono);
  font-size: 9px; font-weight: 600;
  letter-spacing: .08em; text-transform: uppercase;
  padding: 2px 7px; border-radius: 3px;
}
.badge-red    { background: rgba(224,48,48,.15); color: var(--red2); border: 1px solid rgba(224,48,48,.3); }
.badge-amber  { background: rgba(232,160,32,.12); color: var(--amber2); border: 1px solid rgba(232,160,32,.25); }
.badge-teal   { background: rgba(32,176,144,.1); color: var(--teal2); border: 1px solid rgba(32,176,144,.25); }
.badge-blue   { background: rgba(48,112,192,.12); color: var(--blue2); border: 1px solid rgba(48,112,192,.3); }
.badge-gray   { background: rgba(255,255,255,.05); color: var(--text2); border: 1px solid var(--border); }

/* ── DIVIDER ── */
.divider { height: 1px; background: var(--border); margin: 24px 0; }

/* ── GRID ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

/* ── CONTROLS ── */
.ctrl-row {
  display: flex; flex-wrap: wrap;
  align-items: center; gap: 12px 20px;
  padding: 14px 16px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  margin-bottom: 16px;
}
.ctrl-group {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 10px;
  color: var(--text2);
}
.ctrl-group input[type=range] {
  width: 100px;
  accent-color: var(--amber);
  cursor: pointer;
}
.ctrl-val {
  font-family: var(--mono); font-size: 11px;
  font-weight: 600; color: var(--amber);
  min-width: 24px;
}

.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
button, .btn {
  font-family: var(--mono); font-size: 10px; font-weight: 500;
  letter-spacing: .06em; text-transform: uppercase;
  padding: 6px 14px;
  background: var(--bg3);
  color: var(--text2);
  border: 1px solid var(--border2);
  border-radius: var(--r);
  cursor: pointer;
  transition: color .12s, border-color .12s, background .12s;
}
button:hover, .btn:hover { color: var(--amber); border-color: var(--amber); background: rgba(232,160,32,.06); }
button.active, .btn.active { color: var(--amber); border-color: var(--amber); background: rgba(232,160,32,.1); }

/* ── INSIGHT BOX ── */
.insight {
  font-family: var(--mono); font-size: 11px;
  color: var(--text2); line-height: 1.6;
  padding: 12px 14px;
  background: var(--bg3);
  border-left: 2px solid var(--amber);
  border-radius: 0 var(--r) var(--r) 0;
  margin-top: 12px;
}
.insight.red   { border-left-color: var(--red); }
.insight.teal  { border-left-color: var(--teal); }
.insight.blue  { border-left-color: var(--blue2); }

/* ── PAGE HEADER ── */
.page-header {
  display: flex; align-items: flex-start;
  justify-content: space-between;
  gap: 16px; margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.page-header-left { flex: 1; }
.page-title { font-family: var(--mono); font-size: 20px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.page-subtitle { font-family: var(--sans); font-size: 13px; color: var(--text2); max-width: 640px; }

/* ── LEGEND ── */
.legend {
  display: flex; flex-wrap: wrap; gap: 6px 16px;
  margin-bottom: 12px;
}
.leg {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10px; color: var(--text2);
}
.leg-swatch { width: 20px; height: 2px; border-radius: 1px; }
.leg-swatch.dashed { background: repeating-linear-gradient(90deg, var(--color) 0, var(--color) 4px, transparent 4px, transparent 7px); height: 2px; }

/* ── CANVAS WRAPPER ── */
.chart-wrap {
  position: relative;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 16px;
  margin-bottom: 4px;
}

/* ── NODE TABLE ── */
.node-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.node-table th {
  font-family: var(--mono); font-size: 9px; font-weight: 600;
  color: var(--text3); letter-spacing: .1em; text-transform: uppercase;
  text-align: left; padding: 6px 12px;
  border-bottom: 1px solid var(--border);
}
.node-table td {
  padding: 8px 12px;
  border-bottom: 1px solid rgba(37,43,56,.6);
  color: var(--text2); vertical-align: top;
}
.node-table tr:hover td { background: rgba(255,255,255,.02); }

/* ── TIMELINE RUNGS ── */
.ladder { display: flex; gap: 8px; margin-top: 12px; }
.rung {
  flex: 1; padding: 10px 12px;
  border-radius: var(--r); font-size: 11px; line-height: 1.5;
}
.rung strong { display: block; font-family: var(--mono); font-size: 10px; font-weight: 600; margin-bottom: 4px; }
.rung-r  { background: rgba(224,48,48,.1);  border: 1px solid rgba(224,48,48,.25);  color: #f09090; }
.rung-r  strong { color: var(--red2); }
.rung-a  { background: rgba(232,160,32,.08); border: 1px solid rgba(232,160,32,.2); color: #c8a060; }
.rung-a  strong { color: var(--amber2); }
.rung-g  { background: rgba(64,160,64,.08);  border: 1px solid rgba(64,160,64,.2);  color: #80b880; }
.rung-g  strong { color: var(--green2); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .ladder { flex-direction: column; }
  .page { padding: 20px 16px 48px; }
}

/* ── CANVAS override for dark bg ── */
canvas { display: block; }

/* ── SECTION SPACER ── */
.section { margin-bottom: 36px; }

/* ── STAT CARD ── */
.stat-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--r2); padding: 14px 16px;
}
.stat-label { font-family: var(--mono); font-size: 9px; color: var(--text3); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 4px; }
.stat-val   { font-family: var(--mono); font-size: 22px; font-weight: 600; color: var(--amber); }
.stat-sub   { font-family: var(--mono); font-size: 10px; color: var(--text2); margin-top: 2px; }

/* ── LOOP BADGE ── */
.loop-r { display: inline-block; padding: 1px 8px; border-radius: 10px; font-family: var(--mono); font-size: 9px; font-weight: 600; background: rgba(208,64,48,.15); color: var(--coral2); border: 1px solid rgba(208,64,48,.3); letter-spacing: .06em; }
.loop-b { display: inline-block; padding: 1px 8px; border-radius: 10px; font-family: var(--mono); font-size: 9px; font-weight: 600; background: rgba(32,176,144,.1); color: var(--teal2); border: 1px solid rgba(32,176,144,.25); letter-spacing: .06em; }

/* ── TOOLTIP ── */
.tooltip-box {
  position: absolute; z-index: 50;
  background: var(--bg3); border: 1px solid var(--border2);
  border-radius: var(--r2); padding: 12px 14px;
  font-size: 12px; max-width: 280px;
  pointer-events: none;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
}

/* ── DETAIL PANEL ── */
.detail-panel {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: var(--r2);
  padding: 16px 18px;
  margin-top: 16px;
  display: none;
}
.detail-panel.open { display: block; }
.detail-title { font-family: var(--mono); font-size: 12px; font-weight: 600; color: var(--amber); margin-bottom: 10px; }
.detail-close { float: right; font-family: var(--mono); font-size: 10px; color: var(--text3); cursor: pointer; }
.detail-close:hover { color: var(--text); }

/* ── LOADING ── */
.loading {
  display: flex; align-items: center; justify-content: center;
  height: 200px; font-family: var(--mono); font-size: 11px;
  color: var(--text3); letter-spacing: .08em;
}

/* ── PULSE DOT ── */
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
.pulse-dot {
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--red2);
  animation: pulse 1.4s ease-in-out infinite;
  margin-right: 6px; vertical-align: middle;
}