/* Archi.vé — site styles. Brand: warm paper, near-black ink, coral accent,
   system font (matches the app). Plain CSS, no build step. */

:root {
  --paper: #F1EEE8;
  --paper-2: #FFFFFF;
  --ink: #16140F;
  --ink-2: #3A352B;
  --ink-3: #6E6657;
  --coral: #F44E48;
  --rule: rgba(22, 20, 15, 0.12);
  --rule-2: rgba(22, 20, 15, 0.06);
  --maxw: 960px;
  font-family: -apple-system, BlinkMacSystemFont, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--coral); }

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

/* ---- header ---- */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(241, 238, 232, 0.82);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--rule-2);
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
nav.top { display: flex; gap: 22px; align-items: center; font-size: 15px; }
nav.top a { color: var(--ink-2); }
nav.top .pill {
  background: var(--ink); color: var(--paper);
  padding: 7px 14px; border-radius: 999px; font-weight: 500;
}
nav.top .pill:hover { background: var(--coral); color: #fff; }
@media (max-width: 620px) { nav.top a.muted { display: none; } }

/* ---- hero ---- */
.hero { text-align: center; padding: 76px 0 56px; }
.hero img.icon {
  width: 116px; height: 116px; border-radius: 26px;
  box-shadow: 0 10px 40px -16px rgba(22, 20, 15, 0.4);
}
.hero h1 {
  font-size: clamp(40px, 8vw, 76px); line-height: 1.0;
  letter-spacing: -0.03em; margin: 22px 0 6px; font-weight: 700;
}
.hero .tagline { font-size: clamp(18px, 3.4vw, 23px); color: var(--ink-2); margin: 0 auto; max-width: 30ch; }
.hero .lede { color: var(--ink-3); max-width: 52ch; margin: 18px auto 30px; font-size: 17px; }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--ink); color: var(--paper);
  padding: 13px 22px; border-radius: 999px; font-weight: 600; font-size: 16px;
}
.btn:hover { background: var(--coral); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--rule); }
.btn.ghost:hover { border-color: var(--coral); color: var(--coral); }
.btn-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.note { font-size: 13px; color: var(--ink-3); margin-top: 14px; }

/* ---- sections ---- */
section { padding: 52px 0; border-top: 1px solid var(--rule-2); }
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--coral); margin: 0 0 10px;
}
section h2 { font-size: clamp(26px, 4.4vw, 38px); letter-spacing: -0.02em; margin: 0 0 14px; line-height: 1.1; }
section p.big { font-size: 18px; color: var(--ink-2); max-width: 60ch; margin: 0; }

/* feature grid */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); margin-top: 28px; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: var(--paper-2); border: 1px solid var(--rule);
  border-radius: 14px; padding: 22px;
}
.card h3 { margin: 0 0 6px; font-size: 19px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--ink-3); font-size: 15px; }
.card .k { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--coral); }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
@media (max-width: 760px) { .two { grid-template-columns: 1fr; gap: 20px; } }
ul.ticks { list-style: none; padding: 0; margin: 18px 0 0; }
ul.ticks li { padding: 7px 0 7px 26px; position: relative; color: var(--ink-2); border-bottom: 1px solid var(--rule-2); }
ul.ticks li::before { content: "→"; position: absolute; left: 0; color: var(--coral); font-weight: 700; }

/* ---- footer ---- */
footer.site { border-top: 1px solid var(--rule); padding: 40px 0 64px; color: var(--ink-3); font-size: 14px; }
footer.site .wrap { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
footer.site a { color: var(--ink-2); }
footer.site nav { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---- legal/support pages ---- */
.doc { padding: 56px 0 72px; }
.doc h1 { font-size: clamp(32px, 6vw, 48px); letter-spacing: -0.02em; margin: 0 0 6px; }
.doc .updated { color: var(--ink-3); font-size: 14px; margin: 0 0 32px; }
.doc h2 { font-size: 22px; letter-spacing: -0.01em; margin: 34px 0 8px; }
.doc p, .doc li { color: var(--ink-2); font-size: 16px; }
.doc ul { padding-left: 22px; }
.doc li { margin: 6px 0; }
.doc a { text-decoration: underline; text-underline-offset: 3px; color: var(--ink); }
.doc a:hover { color: var(--coral); }
.back { display: inline-block; margin-top: 36px; font-size: 15px; color: var(--ink-3); }