/* Rupert — documentation & product site
   Brand tokens mirror web/app/assets/tailwind/application.css */

:root {
  --oat: #fbf5ef;
  --cream: #f5f5f5;
  --paper: #ffffff;
  --ink: #1a393d;
  --mocha: #5a524b;
  --taupe: #70655a;
  --fog: #efe3d8;
  --haze: #f7ece3;
  --teal: #48736d;
  --teal-soft: rgba(72, 115, 109, 0.12);
  --clay: #7d5449;
  --clay-deep: #54352e;
  --sage: #6b7464;
  --pine: #3e4539;
  --brown: #433625;
  --brown-soft: rgba(67, 54, 37, 0.08);
  --shadow: 0 1px 2px rgba(26, 57, 61, 0.06), 0 8px 24px rgba(26, 57, 61, 0.06);
  --shadow-lg: 0 2px 4px rgba(26, 57, 61, 0.06), 0 16px 40px rgba(26, 57, 61, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter", ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  --font-display: "New York", ui-serif, "Iowan Old Style", "Cardo", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--oat);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

/* ---------- Typography ---------- */
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; line-height: 1.15; color: var(--ink); margin: 0; }
h1 { font-size: clamp(2.4rem, 6vw, 3.6rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.1rem); }
h3 { font-size: 1.15rem; font-family: var(--font-body); font-weight: 600; }
p { margin: 0; }
.lede { font-size: 1.15rem; color: var(--mocha); max-width: 44rem; line-height: 1.6; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clay);
  margin-bottom: 0.75rem;
}

/* ---------- Layout ---------- */
.wrap { max-width: 60rem; margin: 0 auto; padding: 0 1.5rem; }
.wrap-wide { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Header / nav ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--fog);
  background: rgba(251, 245, 239, 0.85);
  backdrop-filter: blur(12px);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; padding-top: 0.8rem; padding-bottom: 0.8rem; }
.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--ink); }
.brand .mark {
  display: grid; place-items: center; width: 2.1rem; height: 2.1rem;
  border-radius: 9px; background: var(--ink); color: var(--cream);
  font-family: var(--font-display); font-size: 1.1rem; line-height: 1;
}
.brand strong { font-size: 1.05rem; letter-spacing: 0.01em; }
nav.desktop { display: flex; align-items: center; gap: 0.2rem; }
nav a { color: var(--mocha); text-decoration: none; font-weight: 600; font-size: 0.92rem; padding: 0.45rem 0.8rem; border-radius: 999px; transition: background 0.15s, color 0.15s; }
nav a:hover { background: var(--haze); color: var(--ink); }
nav a.cta { background: var(--ink); color: var(--cream); }
nav a.cta:hover { background: var(--teal); color: #fff; }
nav a.cta-brown { background: var(--clay); color: #fff; }
nav a.cta-brown:hover { background: var(--clay-deep); color: #fff; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 4.5rem 0 3.5rem;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(42rem 24rem at 85% -10%, var(--teal-soft), transparent 60%),
    radial-gradient(34rem 20rem at -10% 110%, var(--brown-soft), transparent 55%),
    radial-gradient(26rem 18rem at 55% 120%, rgba(125, 84, 73, 0.06), transparent 60%);
  pointer-events: none;
}
.hero .wrap { position: relative; }
.hero h1 { max-width: 40rem; }
.hero .lede { margin-top: 1.1rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.badge-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 2.2rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.65rem 1.2rem; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; text-decoration: none;
  transition: transform 0.12s, box-shadow 0.12s, background 0.15s, color 0.15s;
}
.btn-primary { background: var(--ink); color: var(--cream); }
.btn-primary:hover { background: var(--teal); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-ghost { background: var(--paper); color: var(--ink); border: 1px solid var(--fog); }
.btn-ghost:hover { border-color: var(--taupe); transform: translateY(-1px); box-shadow: var(--shadow); }

/* ---------- Badges / pills ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  border-radius: 999px; padding: 0.32rem 0.85rem;
  font-size: 0.8rem; font-weight: 600;
}
.badge::before { content: ""; width: 0.4rem; height: 0.4rem; border-radius: 50%; background: currentColor; opacity: 0.85; }
.b-olive { background: rgba(26, 57, 61, 0.09); color: var(--ink); border: 1px solid rgba(26, 57, 61, 0.25); }
.b-teal { background: var(--teal-soft); color: var(--teal); border: 1px solid rgba(16, 129, 132, 0.3); }
.b-clay { background: rgba(125, 84, 73, 0.1); color: var(--clay); border: 1px solid rgba(125, 84, 73, 0.28); }
.b-sage { background: rgba(107, 116, 100, 0.13); color: var(--sage); border: 1px solid rgba(107, 116, 100, 0.3); }
.b-brown { background: var(--brown-soft); color: var(--brown); border: 1px solid rgba(67, 54, 37, 0.28); }

/* ---------- Sections & cards ---------- */
section.block { padding: 2.75rem 0; }
section.block.alt { background: var(--paper); border-top: 1px solid var(--fog); border-bottom: 1px solid var(--fog); }
.section-head { max-width: 46rem; margin-bottom: 2rem; }
.section-head h2 { margin-bottom: 0.6rem; }
.section-head p { color: var(--mocha); }

.grid { display: grid; gap: 1rem; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); }

.card {
  background: var(--paper);
  border: 1px solid var(--fog);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
a.card { text-decoration: none; color: inherit; display: block; }
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: rgba(16, 129, 132, 0.35); }
.card .icon {
  display: grid; place-items: center; width: 2.5rem; height: 2.5rem;
  border-radius: 10px; background: var(--teal-soft); color: var(--teal); margin-bottom: 0.9rem;
}
.card .icon.brown { background: var(--brown-soft); color: var(--brown); }
.card h3 { margin-bottom: 0.3rem; }
.card p { font-size: 0.95rem; color: var(--mocha); }
.card .tag { display: block; margin-top: 0.8rem; font-size: 0.78rem; font-weight: 600; color: var(--teal); text-transform: uppercase; letter-spacing: 0.08em; }

/* ---------- Flow diagram ---------- */
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-top: 1rem; }
.flow .node { background: var(--paper); border: 1px solid var(--fog); border-radius: 10px; padding: 0.5rem 0.85rem; font-size: 0.85rem; font-weight: 600; color: var(--ink); box-shadow: var(--shadow); }
.flow .node.hl { border-color: rgba(16, 129, 132, 0.4); color: var(--teal); background: var(--teal-soft); }
.flow i { color: var(--taupe); font-style: normal; }

/* ---------- Code ---------- */
.code-card { border-radius: var(--radius); overflow: hidden; background: var(--ink); box-shadow: var(--shadow-lg); }
.code-card .bar { display: flex; align-items: center; gap: 0.4rem; padding: 0.7rem 1rem; background: rgba(255, 255, 255, 0.06); border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.code-card .bar span { width: 0.6rem; height: 0.6rem; border-radius: 50%; }
.code-card .bar .r { background: var(--clay); } .code-card .bar .y { background: #d8b96a; } .code-card .bar .g { background: var(--pine); }
.code-card pre { margin: 0; padding: 1.2rem 1.4rem; overflow-x: auto; color: var(--cream); font-size: 0.85rem; line-height: 1.6; font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace; }
.code-card .comment { color: rgba(234, 232, 230, 0.5); }

/* ---------- Feature list ---------- */
.checks { list-style: none; padding: 0; margin: 0; }
.checks li { display: flex; gap: 0.6rem; align-items: flex-start; padding: 0.5rem 0; color: var(--mocha); }
.checks li::before { content: "✓"; color: var(--teal); font-weight: 700; flex: none; }

/* ---------- Docs pages ---------- */
main.page { padding: 3rem 0 4rem; }
main.page h1 { margin-bottom: 0.5rem; }
main.page .lede { margin-bottom: 2.2rem; }
main.page section { background: var(--paper); border: 1px solid var(--fog); border-radius: var(--radius); padding: 1.6rem 1.8rem; margin-bottom: 1.25rem; box-shadow: var(--shadow); }
main.page section h2 { font-size: 1.35rem; margin-bottom: 0.6rem; }
main.page p, main.page li { color: var(--mocha); }
main.page li { margin-bottom: 0.35rem; }
main.page code { background: var(--haze); border-radius: 0.3rem; padding: 0.1rem 0.35rem; font-size: 0.88em; font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace; }
main.page pre { background: var(--ink); color: var(--cream); border-radius: var(--radius-sm); padding: 1.1rem 1.3rem; overflow-x: auto; font-size: 0.85rem; line-height: 1.6; font-family: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace; }
main.page pre code { background: none; padding: 0; }
main.page ol li, main.page ul li { line-height: 1.6; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--fog); padding: 2rem 0 3rem; color: var(--taupe); font-size: 0.9rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; }
footer a { color: var(--mocha); text-decoration: none; }
footer a:hover { color: var(--teal); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  nav.desktop { display: none; }
  .hero { padding: 3rem 0 2.5rem; }
  .grid-2 { grid-template-columns: 1fr; }
}

/* Keep all documentation destinations usable at narrow widths. */
header.site .wrap { flex-wrap: wrap; }
nav.desktop { flex-wrap: wrap; }
@media (max-width: 800px) {
  nav.desktop { display: flex; }
  nav.desktop a { font-size: .8rem; padding: .35rem .5rem; }
}