/* Standalone page — deliberately not sharing style.css. Reuses the same
   design tokens (see style.css's "inspection console" comment) but its own
   component classes (.node, .flow, .wrap, .check...) would collide with
   style.css's versions of the same names if both loaded on one page. */
:root {
  --bg: #0a0e16;
  --surface: #111826;
  --surface-2: #16202f;
  --line: #223047;
  --line-soft: #1a2536;
  --ink: #e9eef7;
  --muted: #8695ad;
  --muted-dim: #5c6b83;
  --scan: #46b1ff;
  --scan-rgb: 70, 177, 255;
  --danger: #ff5d6c;
  --danger-rgb: 255, 93, 108;
  --safe: #35d6a0;
  --safe-rgb: 53, 214, 160;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.55;
}
::selection { background: rgba(var(--scan-rgb), 0.35); }
.wrap { max-width: 760px; margin: 0 auto; padding: 56px 20px 90px; }

.kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--scan);
  letter-spacing: 0.02em;
  margin: 0 0 14px;
  text-decoration: none;
  display: inline-block;
}
.kicker:hover { text-decoration: underline; }
h1 {
  font-size: clamp(1.6rem, 4.2vw, 2.15rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  font-weight: 800;
}
.dek { color: var(--muted); font-size: 1.02rem; max-width: 48em; margin: 0 0 34px; }

section { margin: 0 0 44px; }
.h2 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-dim);
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.h2::after { content: ""; flex: 1; height: 1px; background: var(--line); }
h3 { font-size: 1.2rem; margin: 0 0 10px; letter-spacing: -0.01em; }
section > p.intro { color: var(--muted); font-size: 0.96rem; margin: 0 0 20px; max-width: 52em; }

/* pipeline flow */
.flow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin: 0 0 8px;
}
.node {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--surface);
}
.node.gate { color: var(--danger); border-color: rgba(var(--danger-rgb), 0.4); background: rgba(var(--danger-rgb), 0.08); }
.node.pass { color: var(--safe); border-color: rgba(var(--safe-rgb), 0.4); background: rgba(var(--safe-rgb), 0.08); }
.arw { color: var(--muted-dim); font-family: var(--font-mono); }
.flow-caption { color: var(--muted-dim); font-size: 0.82rem; margin: 4px 0 0; }

/* check cards */
.checks { display: flex; flex-direction: column; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.check { background: var(--surface); padding: 14px 16px; display: grid; grid-template-columns: 130px 1fr; gap: 14px; align-items: start; }
.check .name { font-family: var(--font-mono); font-size: 0.82rem; font-weight: 700; color: var(--ink); }
.check .name small { display: block; font-weight: 400; color: var(--muted-dim); font-size: 0.7rem; margin-top: 3px; }
.check .how { color: var(--muted); font-size: 0.88rem; }
.check code { font-family: var(--font-mono); font-size: 0.8rem; color: var(--scan); background: var(--surface-2); padding: 1px 6px; border-radius: 4px; }
@media (max-width: 560px) { .check { grid-template-columns: 1fr; } }

/* regex sample panel */
.console {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  margin: 18px 0 0;
}
.console-bar { display: flex; align-items: center; gap: 6px; padding: 9px 14px; border-bottom: 1px solid var(--line); background: var(--surface-2); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.console-title { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted-dim); margin-left: 4px; }
.console-body { font-family: var(--font-mono); font-size: 0.8rem; padding: 14px 16px; overflow-x: auto; white-space: pre; }
.console-body .c { color: var(--muted-dim); }
.console-body .k { color: var(--scan); }
.console-body .s { color: var(--safe); }

.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.why { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.why .label { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--scan); margin: 0 0 8px; }
.why p { margin: 0; color: var(--muted); font-size: 0.9rem; }
@media (max-width: 560px) { .why-grid { grid-template-columns: 1fr; } }

.limits { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.limits li { display: flex; gap: 12px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--danger); border-radius: 6px; font-size: 0.9rem; color: var(--muted); }
.limits li b { color: var(--ink); font-weight: 600; }
.cite { font-family: var(--font-mono); color: var(--muted-dim); font-size: 0.78rem; }

.close p { color: var(--muted); font-size: 0.96rem; margin: 0 0 20px; max-width: 52em; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn { font-family: var(--font-mono); font-size: 0.82rem; font-weight: 700; text-decoration: none; padding: 11px 18px; border-radius: 8px; display: inline-flex; align-items: center; }
.btn.primary { background: var(--scan); color: #04121f; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.secondary:hover { border-color: var(--scan); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--scan); outline-offset: 2px; }