/* BastraLekha website and documentation.
   Indigo from Sambalpuri ikat, marigold from the temple border, on a cool paper
   ground. Every colour is a token; the dark theme redefines only the tokens. */

:root {
  --ink: #172042;
  --ink-soft: #3b4466;
  --muted: #5d6583;
  --paper: #f6f7fa;
  --surface: #ffffff;
  --line: #dfe2ec;
  --indigo: #25347a;
  --indigo-soft: #e8ebf7;
  --marigold: #d18f12;
  --marigold-soft: #fbf1dc;
  --madder: #a3342a;
  --link: #2b44b0;
  --code-bg: #eef0f6;
  --shadow: 0 1px 2px rgb(23 32 66 / 6%), 0 8px 24px rgb(23 32 66 / 6%);

  --font-display: 'Bricolage Grotesque', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Source Sans 3', 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --font-odia: 'Noto Sans Oriya', 'Kalinga', sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: 2.15rem;
  --step-4: clamp(2.4rem, 5vw, 3.6rem);
  --radius: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e7e9f4;
    --ink-soft: #c3c8de;
    --muted: #979fbf;
    --paper: #0f1428;
    --surface: #161c35;
    --line: #29314f;
    --indigo: #9fb0ff;
    --indigo-soft: #1d2650;
    --marigold: #f0b340;
    --marigold-soft: #33280f;
    --madder: #f08377;
    --link: #a9b8ff;
    --code-bg: #1d2444;
    --shadow: 0 1px 2px rgb(0 0 0 / 30%), 0 8px 24px rgb(0 0 0 / 25%);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --ink: #e7e9f4; --ink-soft: #c3c8de; --muted: #979fbf; --paper: #0f1428; --surface: #161c35;
  --line: #29314f; --indigo: #9fb0ff; --indigo-soft: #1d2650; --marigold: #f0b340; --marigold-soft: #33280f;
  --madder: #f08377; --link: #a9b8ff; --code-bg: #1d2444; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 5rem; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--link); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--marigold); outline-offset: 2px; border-radius: 4px; }
[lang="or"] { font-family: var(--font-odia); }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; background: var(--surface); padding: 0.5rem 1rem; }

/* ---------- header ---------- */
.top {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top__inner {
  max-width: 1320px; margin: 0 auto; padding: 0.75rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.brand__mark {
  width: 28px; height: 28px; border-radius: 6px;
  /* An ikat diamond: the motif every Sambalpuri border starts from. */
  background:
    conic-gradient(from 45deg at 50% 50%, var(--marigold) 0 25%, var(--indigo) 0 50%, var(--marigold) 0 75%, var(--indigo) 0) center / 14px 14px;
}
.brand__name { font: 700 1.2rem/1 var(--font-display); letter-spacing: -0.01em; }
.brand__odia { color: var(--muted); font-size: 0.95rem; }
.top__nav { display: flex; align-items: center; gap: 0.25rem 1.1rem; flex-wrap: wrap; font-weight: 600; font-size: var(--step--1); }
.top__nav a { color: var(--ink-soft); text-decoration: none; padding: 0.3rem 0; }
.top__nav a[aria-current] { color: var(--indigo); box-shadow: inset 0 -2px 0 var(--marigold); }
.top__nav .top__demo {
  color: var(--surface); background: var(--indigo); padding: 0.45rem 0.9rem; border-radius: 999px;
}
.top__nav .top__demo:hover { background: color-mix(in srgb, var(--indigo) 85%, black); }

/* ---------- docs layout ---------- */
.docs {
  max-width: 1320px; margin: 0 auto; padding: 2rem 1.25rem 3rem;
  display: grid; grid-template-columns: 250px minmax(0, 1fr) 220px; gap: 2.5rem;
}
.side, .toc { position: sticky; top: 5rem; align-self: start; max-height: calc(100vh - 6rem); overflow: auto; font-size: var(--step--1); }
.side__group + .side__group { margin-top: 1.25rem; }
.side__title { margin: 0 0 0.4rem; font-weight: 600; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.side ul, .toc ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.1rem; }
.side a, .toc a { display: block; padding: 0.3rem 0.6rem; border-radius: 6px; color: var(--ink-soft); text-decoration: none; }
.side a:hover, .toc a:hover { background: var(--indigo-soft); color: var(--ink); }
.side a[aria-current="page"] { background: var(--indigo-soft); color: var(--indigo); font-weight: 600; box-shadow: inset 3px 0 0 var(--marigold); }
.toc a { padding: 0.2rem 0.6rem; border-left: 1px solid var(--line); border-radius: 0; }

.doc { min-width: 0; max-width: 72ch; }
.doc__section { margin: 0; color: var(--marigold); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; }
.doc h1 { font: 700 var(--step-3)/1.15 var(--font-display); letter-spacing: -0.02em; margin: 0.3rem 0 1rem; text-wrap: balance; }
.doc h2 { font: 700 var(--step-2)/1.2 var(--font-display); letter-spacing: -0.01em; margin: 2.6rem 0 0.75rem; padding-top: 0.4rem; border-top: 1px solid var(--line); text-wrap: balance; }
.doc h3 { font: 600 var(--step-1)/1.3 var(--font-body); margin: 1.8rem 0 0.5rem; }
.doc p, .doc li { color: var(--ink-soft); }
.doc strong { color: var(--ink); }
.doc ul, .doc ol { padding-left: 1.3rem; }
.doc li + li { margin-top: 0.3rem; }
.lead { font-size: var(--step-1); line-height: 1.5; color: var(--ink); }

code, kbd { font: 400 0.88em var(--font-mono); background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre { background: var(--code-bg); padding: 1rem; border-radius: var(--radius); overflow-x: auto; font-size: 0.88rem; }
pre code { background: none; padding: 0; }

.table-wrap { overflow-x: auto; margin: 1rem 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: var(--step--1); font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 0.55rem 0.8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--indigo-soft); color: var(--ink); font-weight: 600; }
tr:last-child td { border-bottom: 0; }

.note, .warn {
  margin: 1.25rem 0; padding: 0.85rem 1rem; border-radius: var(--radius);
  background: var(--indigo-soft); border-left: 4px solid var(--indigo);
}
.warn { background: var(--marigold-soft); border-left-color: var(--marigold); }
.note p, .warn p { margin: 0; color: var(--ink); }
.note p + p, .warn p + p { margin-top: 0.4rem; }

.steps { counter-reset: step; list-style: none; padding: 0 !important; }
.steps > li { counter-increment: step; position: relative; padding-left: 2.4rem; margin-top: 0.8rem; }
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 0.05rem;
  width: 1.7rem; height: 1.7rem; border-radius: 50%; display: grid; place-items: center;
  background: var(--indigo); color: var(--surface); font-weight: 700; font-size: 0.85rem;
}

.path { font-weight: 600; color: var(--ink); white-space: nowrap; }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3rem; }
.pager a { display: grid; gap: 0.15rem; padding: 0.9rem 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); text-decoration: none; color: var(--ink); font-weight: 600; }
.pager a span { color: var(--muted); font-weight: 400; font-size: 0.8rem; }
.pager a:hover { border-color: var(--indigo); }
.pager__next { text-align: right; }

/* ---------- home ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--indigo); color: #fff;
}
.hero::after {
  /* The ikat border along the bottom of a saree. */
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 18px;
  background:
    conic-gradient(from 45deg, var(--marigold) 0 25%, transparent 0 50%, var(--marigold) 0 75%, transparent 0) 0 0 / 18px 18px,
    #7a2a22;
}
.hero__inner { max-width: 1180px; margin: 0 auto; padding: 4.5rem 1.25rem 5.5rem; display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: center; }
.hero h1 { font: 700 var(--step-4)/1.05 var(--font-display); letter-spacing: -0.03em; margin: 0 0 1.1rem; text-wrap: balance; }
.hero p { font-size: var(--step-1); line-height: 1.5; color: #dfe4ff; margin: 0 0 1.6rem; max-width: 42ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn { display: inline-block; padding: 0.75rem 1.25rem; border-radius: 999px; font-weight: 600; text-decoration: none; }
.btn--light { background: #fff; color: #172042; }
.btn--outline { color: #fff; box-shadow: inset 0 0 0 2px rgb(255 255 255 / 60%); }
.hero__card { background: rgb(255 255 255 / 8%); border: 1px solid rgb(255 255 255 / 18%); border-radius: 14px; padding: 1.4rem; }
.hero__card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0.6rem 1rem; font-size: 0.95rem; }
.hero__card dt { color: #b9c3ff; font-weight: 600; }
.hero__card dd { margin: 0; color: #fff; }
.hero__card h2 { margin: 0 0 0.9rem; font: 600 0.8rem/1 var(--font-body); letter-spacing: 0.1em; text-transform: uppercase; color: #f6c96b; }

.band { max-width: 1180px; margin: 0 auto; padding: 4rem 1.25rem 0; }
.band h2 { font: 700 var(--step-3)/1.15 var(--font-display); letter-spacing: -0.02em; margin: 0 0 0.6rem; text-wrap: balance; }
.band > p { color: var(--ink-soft); max-width: 62ch; margin: 0 0 2rem; font-size: var(--step-1); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem; }
.tile h3 { margin: 0 0 0.4rem; font: 700 1.15rem/1.3 var(--font-display); }
.tile p { margin: 0 0 0.6rem; color: var(--ink-soft); }
.tile a { font-weight: 600; font-size: var(--step--1); }
.tile__tag { display: inline-block; margin-bottom: 0.6rem; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--madder); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.checks li { padding-left: 1.8rem; position: relative; color: var(--ink-soft); }
.checks li::before { content: ''; position: absolute; left: 0; top: 0.45em; width: 0.8rem; height: 0.8rem; background: var(--marigold); transform: rotate(45deg); border-radius: 2px; }
.cta { margin: 4rem auto 0; max-width: 1180px; padding: 0 1.25rem; }
.cta__box { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 2rem; display: flex; flex-wrap: wrap; gap: 1.5rem; align-items: center; justify-content: space-between; box-shadow: var(--shadow); }
.cta__box h2 { margin: 0 0 0.3rem; font: 700 var(--step-2)/1.2 var(--font-display); }
.cta__box p { margin: 0; color: var(--ink-soft); }
.btn--solid { background: var(--indigo); color: var(--surface); }

/* ---------- footer ---------- */
.foot { margin-top: 4rem; border-top: 1px solid var(--line); background: var(--surface); }
.foot__inner { max-width: 1320px; margin: 0 auto; padding: 1.5rem 1.25rem; font-size: var(--step--1); color: var(--muted); }
.foot__inner p { margin: 0.2rem 0; }
.foot__meta a { color: var(--muted); }

/* ---------- small screens ---------- */
@media (max-width: 1100px) {
  .docs { grid-template-columns: 220px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 760px) {
  .docs { grid-template-columns: 1fr; gap: 1rem; padding-top: 1rem; }
  .side { position: static; max-height: none; border-bottom: 1px solid var(--line); padding-bottom: 1rem; }
  .side ul { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .hero__inner, .split { grid-template-columns: 1fr; }
  .hero__inner { padding-top: 3rem; }
  .pager { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }