/*
 * Стили статических контентных страниц. Они живут вне React-приложения:
 * поисковый робот и человек без JavaScript получают полный текст сразу, без
 * гидратации. Поэтому здесь обычный CSS, а не Tailwind.
 */

:root {
  color-scheme: dark;
  --bg: #020617;
  --surface: #0f172a;
  --surface-soft: rgba(15, 23, 42, 0.6);
  --border: #1e293b;
  --text: #cbd5e1;
  --text-strong: #f8fafc;
  --muted: #94a3b8;
  --accent: #34d399;
  --accent-strong: #10b981;
  --indigo: #818cf8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.9);
  backdrop-filter: blur(8px);
}

.site-header a.brand {
  color: var(--text-strong);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.95rem;
}

.site-header a.brand span {
  color: var(--muted);
  font-weight: 400;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
}

.wrap.wide {
  max-width: 62rem;
}

h1 {
  color: var(--text-strong);
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 1.75rem 0 0.75rem;
}

h2 {
  color: var(--text-strong);
  font-size: clamp(1.35rem, 3.5vw, 1.7rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 2.75rem 0 0.75rem;
}

h3 {
  color: var(--text-strong);
  font-size: 1.1rem;
  margin: 1.75rem 0 0.5rem;
}

p {
  margin: 0.9rem 0;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
}

ul,
ol {
  margin: 0.9rem 0;
  padding-left: 1.35rem;
}

li {
  margin: 0.45rem 0;
}

a {
  color: var(--indigo);
}

a:hover {
  color: var(--text-strong);
}

strong {
  color: var(--text-strong);
}

figure {
  margin: 1.75rem 0;
}

figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 1rem;
  border: 1px solid var(--border);
}

figcaption {
  margin-top: 0.6rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.pair {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr 1fr;
}

.pair figcaption {
  margin-top: 0.4rem;
}

.card {
  border: 1px solid var(--border);
  background: var(--surface-soft);
  border-radius: 1rem;
  padding: 1.25rem 1.35rem;
  margin: 1.5rem 0;
}

.card h3 {
  margin-top: 0;
}

.callout {
  border: 1px solid rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.06);
  border-radius: 1rem;
  padding: 1.25rem 1.35rem;
  margin: 1.75rem 0;
}

.table-scroll {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  border-radius: 1rem;
}

table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.85rem 1rem;
  vertical-align: top;
  border-top: 1px solid var(--border);
}

thead th {
  border-top: 0;
  background: var(--surface);
  color: var(--muted);
  font-weight: 600;
}

tbody td:first-child {
  color: var(--text-strong);
  font-weight: 500;
}

.cta {
  display: block;
  margin: 2.5rem 0;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: var(--surface);
  text-align: center;
}

.cta p {
  margin-top: 0;
}

.button {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-strong), #4f46e5);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}

.button:hover {
  color: #fff;
  opacity: 0.92;
}

.related {
  display: grid;
  gap: 0.75rem;
  margin: 2rem 0;
}

.related a {
  display: block;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface-soft);
  text-decoration: none;
  color: var(--text-strong);
  font-weight: 500;
}

.related a span {
  display: block;
  color: var(--muted);
  font-weight: 400;
  font-size: 0.9rem;
  margin-top: 0.15rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}

.site-footer p {
  margin: 0.4rem 0;
}

.breadcrumbs {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 1.25rem;
}

.breadcrumbs a {
  color: var(--muted);
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .pair {
    grid-template-columns: 1fr;
  }
}