/* Документация: /readme, /leancanvas */
:root {
  --bg: #0c1222;
  --card: #141c2f;
  --border: #243049;
  --text: #e8eef9;
  --muted: #8b9bb8;
  --accent: #6366f1;
  --ok: #22c55e;
  --warn: #fbbf24;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.docs-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: #0a0f1a;
}
.docs-header h1 { margin: 0; font-size: 1.35rem; }
.docs-nav { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.docs-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.docs-nav a:hover, .docs-nav a.active { color: var(--accent); }

.docs-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}
.docs-main.wide { max-width: 1100px; }

.docs-main h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.35rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.35rem;
}
.docs-main h3 { margin: 1.5rem 0 0.5rem; font-size: 1.05rem; color: #c4b5fd; }
.docs-main h4 { margin: 1rem 0 0.35rem; font-size: 0.95rem; }
.docs-main p, .docs-main li { color: #c8d4ea; }
.docs-main .lead { font-size: 1.1rem; color: var(--text); }
.docs-main a { color: #a5b4fc; }
.docs-main code {
  background: #1a2438;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}
.docs-main pre {
  background: #1a2438;
  border: 1px solid var(--border);
  padding: 1rem;
  overflow-x: auto;
  border-radius: 8px;
  font-size: 0.85rem;
}
.docs-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}
.docs-main th, .docs-main td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
.docs-main th { background: var(--card); color: var(--muted); }
.docs-main ul { padding-left: 1.25rem; }

.toc {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.toc ol { margin: 0; padding-left: 1.25rem; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

.mermaid-wrap {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin: 1rem 0;
  overflow-x: auto;
}
.mermaid-wrap pre { margin: 0; background: transparent; border: none; padding: 0; }

/* Lean Canvas */
.canvas-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: auto auto auto;
  gap: 2px;
  background: var(--border);
  border: 2px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin: 2rem 0;
  font-size: 0.88rem;
}
.canvas-cell {
  background: var(--card);
  padding: 1rem;
  min-height: 140px;
}
.canvas-cell h2 {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  border: none;
  padding: 0;
}
.canvas-cell ul { margin: 0; padding-left: 1rem; }
.canvas-cell li { margin-bottom: 0.35rem; color: #c8d4ea; }
.canvas-cell p { margin: 0 0 0.5rem; font-size: 0.85rem; color: var(--muted); }

.canvas-problem { grid-column: 1; grid-row: 1 / 3; }
.canvas-solution { grid-column: 2; grid-row: 1; }
.canvas-uvp { grid-column: 3; grid-row: 1; }
.canvas-advantage { grid-column: 4 / 6; grid-row: 1; }
.canvas-segments { grid-column: 2; grid-row: 2; }
.canvas-metrics { grid-column: 3; grid-row: 2; }
.canvas-channels { grid-column: 4 / 6; grid-row: 2; }
.canvas-cost { grid-column: 1 / 3; grid-row: 3; }
.canvas-revenue { grid-column: 3 / 6; grid-row: 3; }

@media (max-width: 900px) {
  .canvas-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .canvas-cell { grid-column: 1 !important; grid-row: auto !important; min-height: auto; }
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  background: rgba(99, 102, 241, 0.2);
  color: #c4b5fd;
  margin-right: 0.35rem;
}