/* ==========================================================================
   SK Language Hub — общие стили
   Подключается на всех страницах хаба через <link rel="stylesheet" href="/assets/base.css">
   ========================================================================== */

/* ----- Design tokens -------------------------------------------------- */
:root {
  --bg: #faf6ee;
  --bg-card: #ffffff;
  --bg-soft: #f3ede0;
  --bg-code: #f5efe1;
  --ink: #1c1a17;
  --ink-soft: #5a544c;
  --ink-muted: #8a8378;
  --rule: #e3dccb;
  --rule-soft: #ece6d6;
  --accent: #b04a2a;
  --accent-soft: #f1e4dc;
  --accent-deep: #7a3219;
  --slovak: #2d4a6b;
  --slovak-bg: #e8eef5;
  --warning: #8a6a1f;
  --warning-bg: #f5edd6;
  --success: #436b3a;
  --success-bg: #e6efdf;

  --serif: 'Lora', Georgia, serif;
  --sans: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', Consolas, monospace;

  --max-w: 760px;
  --gap: 1.5rem;
}

/* ----- Reset & base --------------------------------------------------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 1rem; }
body {
  margin: 0;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ----- Layout shell --------------------------------------------------- */
.shell {
  display: grid;
  grid-template-columns: 280px minmax(0, var(--max-w)) 1fr;
  gap: 3rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}
.toc {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  padding-top: 4rem;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
}
.toc-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 1rem 0;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}
.toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
.toc li { counter-increment: toc; padding: 0.35rem 0; }
.toc li::before {
  content: counter(toc, decimal-leading-zero);
  display: inline-block;
  width: 2.2em;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-muted);
}
.toc a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color .15s;
}
.toc a:hover, .toc a.active { color: var(--accent); }
.content { padding: 4rem 0 6rem 0; min-width: 0; }

/* ----- Header / breadcrumbs ------------------------------------------ */
.crumb {
  font-family: var(--sans);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 2rem;
}
.crumb a { color: var(--ink-muted); text-decoration: none; }
.crumb a:hover { color: var(--accent); }
.crumb span { margin: 0 0.5rem; opacity: 0.5; }

/* ----- Typography ----------------------------------------------------- */
h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 1rem 0;
}
h1 em { font-style: italic; color: var(--accent); }

.lede {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 2rem 0;
  border-left: 2px solid var(--accent);
  padding-left: 1.2rem;
}

h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.7rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 4rem 0 1rem 0;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}
h2::before {
  content: attr(data-num);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
}

h3 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.3;
  margin: 2.2rem 0 0.7rem 0;
  color: var(--ink);
}
h4 {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 1.5rem 0 0.5rem 0;
}
p { margin: 0 0 1rem 0; }

/* ----- Inline language markers --------------------------------------- */
.sk { font-family: var(--serif); font-style: italic; color: var(--slovak); font-weight: 500; }
.sk-bold { font-family: var(--serif); font-weight: 700; color: var(--slovak); }

.pair {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4em;
  background: var(--slovak-bg);
  padding: 0.1em 0.55em;
  border-radius: 4px;
  font-style: italic;
  color: var(--slovak);
  font-weight: 500;
  white-space: nowrap;
}
.pair .arr { color: var(--ink-muted); font-style: normal; font-weight: 400; font-size: 0.85em; }
.pair b { color: var(--accent-deep); font-weight: 600; }

.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85em;
  font-weight: 600;
  padding: 0.05em 0.45em;
  background: var(--accent-soft);
  color: var(--accent-deep);
  border-radius: 3px;
  white-space: nowrap;
}

/* ----- Tables --------------------------------------------------------- */
.table-wrap {
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg-card);
}
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td {
  padding: 0.7rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
}
th {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--bg-soft);
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-soft); }
td.sk-cell { font-style: italic; color: var(--slovak); font-weight: 500; }
td.end {
  font-family: var(--mono);
  font-style: normal;
  font-weight: 600;
  color: var(--accent-deep);
  white-space: nowrap;
}

/* ----- Callouts ------------------------------------------------------- */
.callout {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.55;
  border-left: 3px solid;
}
.callout.note { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-deep); }
.callout.warn { background: var(--warning-bg); border-color: var(--warning); color: #5a4715; }
.callout.tip  { background: var(--success-bg); border-color: var(--success); color: #2f4827; }
.callout-title {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.4rem 0;
  display: block;
}

/* ----- Examples block ------------------------------------------------- */
.examples {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0 1.5rem 0;
  padding: 1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-radius: 6px;
}
.example {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.15rem;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--rule-soft);
}
.example:last-child { border-bottom: none; padding-bottom: 0; }
.example:first-child { padding-top: 0; }
.example .ru { font-size: 0.88rem; color: var(--ink-muted); font-style: normal; }

/* ----- Lists ---------------------------------------------------------- */
ul, ol { padding-left: 1.5rem; }
li { margin-bottom: 0.4rem; }

/* ----- Collapsible details ------------------------------------------- */
details {
  margin: 1.2rem 0;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg-card);
  overflow: hidden;
}
summary {
  cursor: pointer;
  padding: 0.7rem 1rem;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink-soft);
  background: var(--bg-soft);
  list-style: none;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
summary::-webkit-details-marker { display: none; }
summary::before {
  content: '+';
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  transition: transform .2s;
}
details[open] summary::before { content: '−'; }
details > *:not(summary) { padding: 0 1rem; }
details > *:nth-child(2) { padding-top: 1rem; }
details > *:last-child { padding-bottom: 1rem; }

/* ----- Footer --------------------------------------------------------- */
.foot {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--ink-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.foot a { color: var(--ink-soft); text-decoration: none; border-bottom: 1px dotted var(--rule); }
.foot a:hover { color: var(--accent); }

/* ----- Mobile TOC ----------------------------------------------------- */
.toc-mobile { display: none; margin: 1.5rem 0; }

/* ----- Responsive ----------------------------------------------------- */
@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; padding: 0 1.2rem; gap: 0; }
  .toc { display: none; }
  .toc-mobile { display: block; }
  .content { padding: 2.5rem 0 4rem 0; }
  body { font-size: 17px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.4rem; margin-top: 3rem; }
  th, td { padding: 0.6rem 0.7rem; }
  table { font-size: 0.88rem; }
}
@media (max-width: 480px) {
  .shell { padding: 0 1rem; }
  body { font-size: 16px; }
  h1 { font-size: 1.7rem; }
  .lede { font-size: 1rem; padding-left: 1rem; }
  .pair { white-space: normal; }
}

/* ----- Print ---------------------------------------------------------- */
@media print {
  .toc, .toc-mobile, .foot { display: none; }
  body { background: white; font-size: 11pt; }
  .shell { grid-template-columns: 1fr; padding: 0; }
  h2 { break-after: avoid; }
  .table-wrap, .examples, details { break-inside: avoid; }
}