/* ============================================================
   BookChain — shared styles
   Palette: indigo → violet → coral "reaction" gradient
   Type: Bricolage Grotesque (display) · Inter (body) · JetBrains Mono (labels)
   ============================================================ */

:root {
  --ink: #14152e;
  --bg: #ffffff;
  --bg-soft: #f4f3fb;
  --bg-deep: #101128;
  --primary: #4f46e5;
  --primary-2: #7c3aed;
  --spark: #f43f6b;
  --muted: #5a5b78;
  --line: #e6e5f2;
  --line-strong: #d5d3ea;
  --white: #ffffff;
  --grad: linear-gradient(100deg, var(--primary) 0%, var(--primary-2) 48%, var(--spark) 100%);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 24px 60px -28px rgba(20, 21, 46, 0.35);
  --shadow-soft: 0 12px 32px -20px rgba(20, 21, 46, 0.4);
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "cv02", "cv11";
}

h1, h2, h3, h4 {
  font-family: "Bricolage Grotesque", "Inter", sans-serif;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 0.4em;
}

p { margin: 0 0 1em; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0 0 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--grad);
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Inter", sans-serif;
  font-weight: 600;
  font-size: 15px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
  text-decoration: none;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 24px -12px rgba(124, 58, 237, 0.7);
}
.btn-primary:hover { transform: translateY(-2px); text-decoration: none; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: var(--bg-soft); text-decoration: none; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; color: var(--ink); font-size: 18px; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand small { font-family: "JetBrains Mono", monospace; font-size: 10px; color: var(--muted); font-weight: 500; letter-spacing: 0.1em; margin-left: 2px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 15px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 84px;
  background:
    radial-gradient(60% 55% at 82% 8%, rgba(124, 58, 237, 0.12), transparent 60%),
    radial-gradient(55% 50% at 12% 92%, rgba(244, 63, 107, 0.1), transparent 60%),
    var(--bg);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero h1 { font-size: clamp(38px, 5.4vw, 62px); }
.hero .lead {
  font-size: 19px;
  color: var(--muted);
  max-width: 30ch;
  margin-bottom: 30px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta {
  margin-top: 30px;
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--muted);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--grad); display: inline-block; }

/* Booking card mock (hero signature companion) */
.mock {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 22px;
  transform: rotate(-1.2deg);
}
.mock-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.mock-biz { display: flex; align-items: center; gap: 11px; }
.mock-avatar { width: 38px; height: 38px; border-radius: 11px; background: var(--grad); }
.mock-biz b { font-size: 15px; }
.mock-biz small { color: var(--muted); font-size: 12.5px; display: block; }
.mock-status { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.08em; color: #0a7d55; background: #e6f7ef; padding: 5px 10px; border-radius: 999px; }
.mock-row { display: flex; justify-content: space-between; padding: 12px 0; border-top: 1px solid var(--line); font-size: 14.5px; }
.mock-row span { color: var(--muted); }
.mock-row b { font-weight: 600; }
.mock-total { display: flex; justify-content: space-between; padding-top: 14px; margin-top: 4px; border-top: 2px solid var(--ink); font-size: 16px; }
.mock-total b { font-family: "Bricolage Grotesque", sans-serif; }
.mock-btn { margin-top: 16px; text-align: center; background: var(--grad); color: #fff; font-weight: 600; padding: 12px; border-radius: 12px; font-size: 14.5px; }

/* ---------- Section shell ---------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 620px; margin-bottom: 52px; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 40px); }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }

/* ---------- The chain (signature: 5-step booking) ---------- */
.chain {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}
.chain-line {
  position: absolute;
  top: 27px;
  left: 8%;
  right: 8%;
  height: 3px;
  background: var(--line-strong);
  border-radius: 3px;
  overflow: hidden;
}
.chain-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad);
  background-size: 220% 100%;
  animation: flow 4.5s linear infinite;
}
@keyframes flow { to { background-position: -220% 0; } }
.step { text-align: center; padding: 0 12px; position: relative; }
.step-node {
  width: 54px; height: 54px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--line-strong);
  display: grid;
  place-items: center;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 17px;
  color: var(--primary);
  position: relative;
  z-index: 2;
}
.step:nth-child(2) .step-node { border-color: var(--primary); }
.step:nth-child(3) .step-node { border-color: var(--primary-2); color: var(--primary-2); }
.step:nth-child(4) .step-node { border-color: #b23cc4; color: #b23cc4; }
.step:nth-child(5) .step-node { border-color: var(--spark); color: var(--spark); }
.step h3 { font-size: 17px; margin-bottom: 6px; }
.step p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- Features ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.18s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-soft); border-color: var(--line-strong); }
.card .ico { width: 44px; height: 44px; border-radius: 12px; background: var(--bg-soft); display: grid; place-items: center; margin-bottom: 16px; }
.card .ico svg { width: 22px; height: 22px; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 14.5px; color: var(--muted); margin: 0; }

/* ---------- Pricing ---------- */
.tiers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.tier {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
}
.tier.featured { border: 1.5px solid transparent; background:
    linear-gradient(#fff, #fff) padding-box,
    var(--grad) border-box; box-shadow: var(--shadow-soft); position: relative; }
.tier.featured::before {
  content: "Most popular";
  position: absolute; top: -12px; left: 26px;
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.08em;
  background: var(--grad); color: #fff; padding: 5px 12px; border-radius: 999px;
}
.tier-name { font-family: "JetBrains Mono", monospace; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.tier-price { font-family: "Bricolage Grotesque", sans-serif; font-size: 40px; font-weight: 600; letter-spacing: -0.03em; margin: 12px 0 2px; }
.tier-price small { font-family: "Inter", sans-serif; font-size: 15px; font-weight: 500; color: var(--muted); }
.tier-desc { color: var(--muted); font-size: 14.5px; margin-bottom: 20px; }
.tier ul { list-style: none; padding: 0; margin: 0 0 26px; display: grid; gap: 11px; }
.tier li { display: flex; gap: 10px; font-size: 14.5px; }
.tier li svg { flex: none; margin-top: 3px; }
.tier .btn { width: 100%; justify-content: center; margin-top: auto; }
.price-note { text-align: center; color: var(--muted); font-size: 13.5px; margin-top: 22px; }

/* ---------- About / contact split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.info-list { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 18px; }
.info-list li { display: flex; gap: 14px; align-items: flex-start; }
.info-list .ico { width: 40px; height: 40px; border-radius: 11px; background: #fff; border: 1px solid var(--line); display: grid; place-items: center; flex: none; }
.info-list b { display: block; font-size: 14px; }
.info-list span { color: var(--muted); font-size: 14.5px; }
.company-card { background: var(--bg-deep); color: #cfd0e8; border-radius: var(--radius); padding: 32px; }
.company-card h3 { color: #fff; font-size: 20px; }
.company-card dl { display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; margin: 20px 0 0; font-size: 14.5px; }
.company-card dt { color: #8688b0; font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: 0.06em; padding-top: 2px; }
.company-card dd { margin: 0; color: #ececfa; }

/* ---------- CTA band ---------- */
.band { background: var(--bg-deep); color: #fff; text-align: center; padding: 76px 0; }
.band h2 { font-size: clamp(28px, 4vw, 44px); color: #fff; }
.band p { color: #b9bae0; font-size: 18px; max-width: 46ch; margin: 0 auto 28px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding: 54px 0 40px; background: var(--bg); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer h4 { font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); font-weight: 500; margin-bottom: 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer ul a { color: var(--ink); font-size: 14.5px; }
.footer ul a:hover { color: var(--primary); }
.footer-brand p { color: var(--muted); font-size: 14px; max-width: 32ch; margin-top: 14px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13.5px; color: var(--muted); }
.footer-bottom .brand { font-size: 15px; }

/* ---------- Legal pages ---------- */
.legal { padding: 60px 0 80px; }
.legal-wrap { max-width: 780px; }
.legal h1 { font-size: clamp(30px, 4vw, 44px); margin-bottom: 8px; }
.legal .updated { font-family: "JetBrains Mono", monospace; font-size: 13px; color: var(--muted); margin-bottom: 40px; }
.legal h2 { font-size: 21px; margin: 40px 0 12px; }
.legal h3 { font-size: 17px; margin: 26px 0 8px; }
.legal p, .legal li { color: #33344f; font-size: 15.5px; }
.legal ul { padding-left: 20px; margin: 0 0 1em; }
.legal li { margin-bottom: 8px; }
.legal .back { display: inline-flex; align-items: center; gap: 8px; font-family: "JetBrains Mono", monospace; font-size: 13px; margin-bottom: 32px; }
.legal .note { background: var(--bg-soft); border: 1px solid var(--line); border-left: 3px solid var(--primary); border-radius: 10px; padding: 16px 18px; font-size: 14px; color: var(--muted); }

/* ---------- Placeholder highlight (fill these in) ---------- */
.fill { background: #fff4d6; border-bottom: 1px dashed #d9a520; padding: 0 3px; border-radius: 3px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .mock { max-width: 400px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .grid-3, .tiers { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .nav-links { display: none; }
}
@media (max-width: 720px) {
  .chain { grid-template-columns: 1fr; gap: 22px; }
  .chain-line { display: none; }
  .step { display: grid; grid-template-columns: 54px 1fr; text-align: left; gap: 16px; align-items: center; }
  .step-node { margin: 0; }
  .step p { max-width: none; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 60px; }
  .section { padding: 64px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; transition: none !important; }
}

:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }