/* IncidentTrail design system. Neutral engineering tool styling.
   Off-white surfaces, charcoal text, gray borders, one restrained teal accent. */
:root {
  --background: #fafaf9;
  --card: #ffffff;
  --foreground: #1c1917;
  --muted: #78716c;
  --muted-bg: #f5f5f4;
  --border: #e7e5e4;
  --accent: #0f766e;
  --accent-hover: #115e59;
  --accent-soft: #eef7f5;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --warn: #b45309;
  --warn-soft: #fffbeb;
  --radius: 8px;
  --font-sans: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
  --font-mono: Consolas, "Courier New", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--background); color: var(--foreground);
  font-family: var(--font-sans); line-height: 1.55; font-size: 15px;
}
code, pre, .mono { font-family: var(--font-mono); }
a { color: var(--accent); }

/* Top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; height: 56px; background: var(--card);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }
.brand a { color: inherit; text-decoration: none; display: flex; align-items: center; gap: 10px; }
.brandmark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--accent); color: #fff;
}
.brandmark svg { width: 17px; height: 17px; }
.tag { color: var(--muted); font-size: 0.82rem; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  color: var(--muted); text-decoration: none; font-size: 0.9rem;
  padding: 7px 12px; border-radius: 6px;
}
.nav a:hover { color: var(--foreground); background: var(--muted-bg); }
.menu-btn {
  display: none; align-items: center; justify-content: center;
  width: 38px; height: 38px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--card); cursor: pointer; color: var(--foreground);
}
.menu-btn svg { width: 19px; height: 19px; }
.menu-btn:hover { background: var(--muted-bg); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); background: var(--card); color: var(--foreground);
  padding: 8px 14px; border-radius: var(--radius); cursor: pointer; font-size: 0.92rem;
  text-decoration: none; font-family: inherit; line-height: 1.4;
}
.btn svg { width: 15px; height: 15px; flex: none; }
.btn:hover { background: var(--muted-bg); border-color: #d6d3d1; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn.small { padding: 5px 10px; font-size: 0.82rem; }
.btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible,
summary:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

/* Layout */
.wrap { max-width: 1000px; margin: 0 auto; padding: 28px 20px 40px; }
.wrap.wide { max-width: 1080px; }
.hero { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 36px 32px; margin-bottom: 16px; }
.hero.center { text-align: center; padding: 56px 32px; }
.display { font-size: 2.9rem; line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 14px; }
.center-lead { margin-left: auto; margin-right: auto; }
.center-row { justify-content: center; }
.btn.large { padding: 11px 20px; font-size: 1rem; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.82rem; font-weight: 600; color: var(--accent);
  background: var(--accent-soft); border: 1px solid #cce7e2;
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px; text-decoration: none;
}
.pill:hover { border-color: var(--accent); }
.pill-arrow svg { width: 13px; height: 13px; }
.pill-arrow { display: inline-flex; }
.console {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  margin-bottom: 16px; overflow: hidden;
}
.console-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--muted-bg);
}
.console-dot { width: 10px; height: 10px; border-radius: 999px; background: #d6d3d1; }
.console-title { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); margin-right: auto; }
.console-body {
  margin: 0; padding: 16px 18px; min-height: 220px;
  font-size: 0.82rem; line-height: 1.7; white-space: pre-wrap;
  border-left: 3px solid var(--accent);
}
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 16px; }
.metric {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 18px; text-align: center;
}
.metric-num { font-size: 2rem; font-weight: 700; color: var(--accent); }
.metric-label { color: var(--muted); font-size: 0.84rem; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; margin-bottom: 16px; padding: 8px 4px; }
.split h2 { border: none; padding: 0; margin: 0 0 8px; font-size: 1.4rem; letter-spacing: -0.01em; }
.kicker { color: var(--accent); font-weight: 700; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 6px; }
.mini-report { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.mini-head { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.mini-title { font-weight: 600; margin: 0 0 8px; }
.mini-caution { color: var(--muted); font-size: 0.85rem; margin: 0 0 10px; }
.mini-refs { display: flex; gap: 2px; flex-wrap: wrap; }
.tool-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 12px 0; }
.tool-card {
  display: flex; gap: 12px; padding: 14px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--muted-bg);
}
.tool-card svg { width: 18px; height: 18px; color: var(--accent); flex: none; margin-top: 2px; }
.tool-card strong { font-family: var(--font-mono); font-size: 0.86rem; }
.tool-card p { margin: 4px 0 0; font-size: 0.86rem; color: #44403c; }
.cta-band {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 36px 28px; text-align: center; margin-bottom: 16px;
}
.cta-band h2 { border: none; padding: 0; margin: 0 0 8px; font-size: 1.5rem; }
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}
.hero {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 36px 32px; margin-bottom: 16px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 0.78rem; font-weight: 600; color: var(--accent);
  background: var(--accent-soft); border: 1px solid #cce7e2;
  padding: 4px 12px; border-radius: 999px; margin-bottom: 14px;
}
.eyebrow svg { width: 13px; height: 13px; }
.hero h1 { font-size: 2rem; margin: 0 0 10px; letter-spacing: -0.01em; }
.lead { font-size: 1.02rem; color: #44403c; max-width: 640px; }
.row { display: flex; gap: 8px; margin: 14px 0; flex-wrap: wrap; align-items: center; }
.meta-row { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 16px; }
.meta-item { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: 0.85rem; }
.meta-item svg { width: 14px; height: 14px; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.card h2 { font-size: 1rem; margin: 12px 0 6px; border: none; padding: 0; }
.card p { margin: 0; color: #44403c; font-size: 0.92rem; }
.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--muted-bg); border: 1px solid var(--border); color: var(--accent);
}
.card-icon svg { width: 18px; height: 18px; }
.panel { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; margin-bottom: 16px; }
.panel > h2:first-child { margin-top: 0; }
.panel-head { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.panel-head svg { width: 17px; height: 17px; color: var(--accent); }
.panel-head h2 { margin: 0; border: none; padding: 0; }
.panel-desc { color: var(--muted); font-size: 0.88rem; margin: 0 0 12px; }
h1 { font-size: 1.35rem; margin: 0 0 8px; }
h2 { font-size: 1.02rem; margin: 22px 0 8px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.muted { color: var(--muted); }
.small { font-size: 0.84rem; }
.hidden { display: none; }

/* Dashboard shell */
.dash { display: grid; grid-template-columns: 212px 1fr; gap: 16px; padding: 16px 20px 40px; max-width: 1220px; margin: 0 auto; align-items: start; }
.side {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: 8px; position: sticky; top: 72px;
}
.sidelink {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; color: var(--foreground); text-decoration: none;
  border-radius: 6px; font-size: 0.92rem;
}
.sidelink svg { width: 16px; height: 16px; color: var(--muted); }
.sidelink:hover { background: var(--muted-bg); }
.sidelink.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.sidelink.active svg { color: var(--accent); }
.sidelink .count-badge {
  margin-left: auto; font-size: 0.72rem; font-weight: 700;
  background: var(--accent); color: #fff; border-radius: 999px;
  padding: 0 8px; line-height: 1.5;
}
.view { scroll-margin-top: 72px; }
.sidelink.muted { color: var(--muted); }
.main { display: grid; gap: 16px; min-width: 0; }
.main .panel { margin: 0; }
.status-pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 0.78rem; color: var(--muted);
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px;
}
.status-pill svg { width: 13px; height: 13px; }
.dot { width: 7px; height: 7px; border-radius: 999px; background: var(--accent); }

/* Forms */
label { display: block; font-weight: 600; margin: 12px 0 5px; font-size: 0.9rem; }
textarea, input[type="text"] {
  width: 100%; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 9px 11px; font-size: 0.85rem; background: var(--card); color: var(--foreground);
  font-family: var(--font-mono);
}
textarea:focus, input:focus { border-color: var(--accent); outline: none; }
.tabs { display: flex; gap: 0; margin: 14px 0 0; border-bottom: 1px solid var(--border); }
.tab {
  border: 1px solid transparent; border-bottom: none; background: none;
  padding: 8px 14px; cursor: pointer; font-size: 0.9rem; color: var(--muted);
  border-radius: 8px 8px 0 0; font-family: inherit;
  display: inline-flex; align-items: center; gap: 8px;
}
.tab svg { width: 14px; height: 14px; }
.tab.active { color: var(--foreground); font-weight: 600; background: var(--card); border-color: var(--border); }
.steps { margin: 10px 0; padding-left: 20px; }
.steps li { margin-bottom: 5px; }
.how { border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; margin: 14px 0; background: var(--muted-bg); }
.how summary { cursor: pointer; font-weight: 600; font-size: 0.92rem; }
.alert { border: 1px solid var(--danger); background: var(--danger-soft); color: var(--danger); padding: 10px 12px; margin-top: 10px; border-radius: var(--radius); font-size: 0.9rem; }
.progress { margin-top: 10px; color: var(--accent); font-weight: 600; font-size: 0.92rem; }
.preview {
  max-height: 190px; overflow: auto; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 12px; font-size: 0.8rem; background: var(--muted-bg);
}
.preview ul { margin: 6px 0 0; padding-left: 18px; }

/* Timeline */
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li {
  border: 1px solid var(--border); border-left: 3px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 8px 12px; margin: 0 0 8px; background: var(--card);
  scroll-margin-top: 76px;
}
.timeline li.flash { border-left-color: var(--accent); background: var(--accent-soft); }
.timeline .meta { color: var(--muted); font-size: 0.76rem; margin-top: 3px; }
.sev { display: inline-flex; align-items: center; gap: 6px; font-size: 0.76rem; color: var(--muted); margin-top: 4px; }
.sev-dot { width: 8px; height: 8px; border-radius: 999px; background: #a8a29e; flex: none; }
.sev-error .sev-dot, .sev-critical .sev-dot { background: var(--danger); }
.sev-warning .sev-dot { background: var(--warn); }
.sev-info .sev-dot, .sev-debug .sev-dot { background: #a8a29e; }
.sev-critical { font-weight: 700; color: var(--danger); }

/* Findings */
.obs { margin: 0; padding-left: 0; list-style: none; }
.obs li {
  margin-bottom: 8px; padding: 9px 12px; font-size: 0.9rem;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--muted-bg);
}
.rule-tag {
  display: inline-block; font-family: var(--font-mono); font-size: 0.74rem;
  background: var(--card); border: 1px solid var(--border); border-radius: 4px;
  padding: 1px 7px; margin-right: 8px; color: var(--muted);
}
.hyp { border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; }
.hyp-top { display: flex; align-items: flex-start; gap: 10px; }
.hyp-top strong { flex: 1; }
.status {
  display: inline-flex; align-items: center; gap: 6px; flex: none;
  border: 1px solid var(--border); border-radius: 999px; padding: 2px 11px;
  font-size: 0.76rem; color: var(--muted); font-weight: 400; white-space: nowrap;
}
.status.plausible { color: var(--warn); border-color: #e8c87e; background: var(--warn-soft); }
.status.observed { color: var(--accent); border-color: #9fd3cb; background: var(--accent-soft); }
.status.insufficient { color: var(--muted); }
.hyp details { margin-top: 8px; }
.hyp summary { cursor: pointer; color: var(--accent); font-weight: 600; font-size: 0.88rem; }
.evlink {
  font-family: var(--font-mono); font-size: 0.76rem;
  border: 1px solid var(--border); background: var(--card); border-radius: 4px;
  padding: 2px 8px; margin: 2px 4px 2px 0; cursor: pointer; color: var(--foreground);
}
.evlink:hover { border-color: var(--accent); color: var(--accent); }
.toolstep { display: flex; align-items: flex-start; gap: 9px; }
.toolstep svg { width: 15px; height: 15px; color: var(--accent); flex: none; margin-top: 3px; }
.toolstep code { font-size: 0.78rem; word-break: break-all; }
.ticket {
  white-space: pre-wrap; background: var(--muted-bg);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; font-size: 0.82rem;
}
.empty { color: var(--muted); padding: 28px 12px; text-align: center; }
.empty svg { width: 26px; height: 26px; margin-bottom: 8px; }
.foot { text-align: center; color: var(--muted); font-size: 0.8rem; padding: 20px; border-top: 1px solid var(--border); }
.stack-list { display: grid; gap: 8px; margin: 12px 0; }
.stack-row {
  display: flex; align-items: center; gap: 12px; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); font-size: 0.9rem;
}
.stack-row svg { width: 16px; height: 16px; color: var(--accent); flex: none; }
.stack-row span:last-child { margin-left: auto; color: var(--muted); font-size: 0.8rem; }

@media (max-width: 860px) {
  .menu-btn { display: inline-flex; }
  .topbar { gap: 10px; }
  .nav {
    display: none; position: absolute; top: 56px; left: 0; right: 0;
    background: var(--card); border-bottom: 1px solid var(--border);
    padding: 8px 16px 12px; flex-direction: column; align-items: stretch; gap: 2px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 10px 12px; }
  .layout { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .dash { grid-template-columns: 1fr; }
  .side { position: static; display: flex; overflow-x: auto; }
  .sidelink { white-space: nowrap; }
  .hero { padding: 24px 20px; }
  .hero h1 { font-size: 1.5rem; }
  .display { font-size: 2rem; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  .tag { display: none; }
}