/* QTrip — Paper & Ink. Editorial minimalism: 0px radius, no gradients, no shadows. */

:root {
  --bg: #FAFAF8;
  --surface: #FFFFFF;
  --ink: #1A1A1A;
  --muted: #6B6B6B;
  --faint: #B0B0B0;
  --accent: #C45D3E;
  --accent-hover: #A84D32;
  --divider: #E8E8E4;

  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;

  --maxw: 960px;
  --readw: 680px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

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

/* ---- Layout ---- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.read { max-width: var(--readw); margin: 0 auto; padding: 0 24px; }

section { padding: 64px 0; }
@media (max-width: 600px) { section { padding: 48px 0; } }

.rule { border: 0; border-top: 1px solid var(--divider); margin: 0; }

/* ---- Typography ---- */
h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.2; }
h1 { font-size: 48px; font-weight: 400; line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: 32px; margin-bottom: 24px; }
h3 { font-size: 20px; font-family: var(--sans); font-weight: 500; }
@media (max-width: 600px) { h1 { font-size: 38px; } h2 { font-size: 26px; } }

p { margin-bottom: 16px; color: var(--ink); }
p.lead { font-size: 19px; color: var(--muted); }

.label {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--faint);
}

.mono { font-family: var(--mono); font-feature-settings: "tnum"; }

/* ---- Header ---- */
.site-header {
  border-bottom: 1px solid var(--divider);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
.site-header .wrap {
  display: flex; align-items: baseline; justify-content: space-between;
  height: 64px;
}
.brand { font-family: var(--serif); font-size: 24px; color: var(--ink); }
.site-nav a { color: var(--muted); font-size: 14px; margin-left: 24px; }
.site-nav a:hover { color: var(--ink); }

/* ---- Hero ---- */
.hero { padding-top: 72px; padding-bottom: 72px; }
.hero .tagline { font-family: var(--serif); font-size: 30px; line-height: 1.25; margin: 16px 0 8px; }
.hero .sub { font-size: 18px; color: var(--muted); max-width: 540px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 760px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }

/* App Store badge placeholder */
.badge {
  display: inline-block; margin-top: 28px;
  font-family: var(--sans); font-weight: 500; font-size: 14px;
  color: var(--surface); background: var(--ink);
  padding: 12px 22px; letter-spacing: 0.02em;
}
.badge:hover { background: #000; color: var(--surface); }
.badge.is-soon { background: var(--divider); color: var(--muted); cursor: default; }

/* ---- Device frame mockup (flat — no shadow, per design rules) ---- */
.device {
  border: 1px solid var(--divider);
  background: var(--surface);
  padding: 0; overflow: hidden;
}
.device img { width: 100%; }
.device-fallback {
  aspect-ratio: 9 / 19.5;
  display: flex; align-items: center; justify-content: center;
  color: var(--faint); font-size: 13px; text-align: center; padding: 24px;
  border: 1px dashed var(--divider);
}

/* ---- Steps ---- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr 1fr; gap: 28px; } }
@media (max-width: 420px) { .steps { grid-template-columns: 1fr; } }
.step .n { font-family: var(--mono); font-size: 13px; color: var(--accent); }
.step h3 { margin: 8px 0 6px; }
.step p { font-size: 15px; color: var(--muted); margin: 0; }

/* ---- Features ---- */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 48px; }
@media (max-width: 600px) { .features { grid-template-columns: 1fr; } }
.feature { padding: 16px 0; border-top: 1px solid var(--divider); }
.feature h3 { font-size: 16px; margin-bottom: 4px; }
.feature p { font-size: 15px; color: var(--muted); margin: 0; }

/* ---- Editorial note block ---- */
.note { background: var(--surface); border: 1px solid var(--divider); padding: 40px; }
.note p:last-child { margin-bottom: 0; }

/* ---- Long-form content (support / privacy) ---- */
.doc h1 { margin-bottom: 8px; }
.doc .meta { color: var(--faint); font-size: 14px; margin-bottom: 40px; }
.doc h2 { font-size: 24px; margin: 40px 0 12px; }
.doc h3 { font-size: 17px; margin: 28px 0 8px; }
.doc p, .doc li { color: var(--ink); }
.doc ul { margin: 0 0 16px 22px; }
.doc li { margin-bottom: 8px; }
.faq dt { font-weight: 700; margin-top: 28px; }
.faq dd { margin: 6px 0 0; color: var(--muted); }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--divider); padding: 40px 0; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.site-footer a { color: var(--muted); font-size: 14px; margin-right: 24px; }
.site-footer a:hover { color: var(--ink); }
.site-footer .copy { color: var(--faint); font-size: 13px; font-family: var(--mono); }