/* ============================================================
   VytalStack Web — shared styles
   Design tokens mirror the app (constants/theme.ts)
   ============================================================ */

:root {
  --bg:       #F4F1EC;
  --surface:  #FFFFFF;
  --ink:      #0B0B0B;
  --ink2:     #2A2A28;
  --mute:     #6E6E6A;        /* darkened from app's #8A8A86 for WCAG AA on cream */
  --line:     #E8E4DC;
  --line2:    #EFEBE3;
  --sage:     #CDE9D6;
  --sage-deep:#6B8E72;
  --warn:     #C97A3B;
  --tint:     #F8F5F0;

  --radius-card: 22px;
  --radius-pill: 999px;
  --radius-sm:   12px;
  --radius-md:   16px;

  --maxw:      1080px;
  --maxw-text: 760px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
          Arial, "Apple Color Emoji", sans-serif;

  --shadow-sm: 0 1px 2px rgba(11,11,11,0.04);
  --shadow-md: 0 8px 24px rgba(11,11,11,0.08);
  --shadow-lg: 0 24px 60px rgba(11,11,11,0.14);
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  letter-spacing: -0.1px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--sage-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* ── Layout ──────────────────────────────────────────────── */

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

section { padding: 72px 0; }

.eyebrow {
  font-size: 11px; font-weight: 600; letter-spacing: 1.4px;
  text-transform: uppercase; color: var(--sage-deep);
}

/* ── Header ──────────────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244,241,236,0.82);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700;
  font-size: 18px; letter-spacing: -0.4px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; background: var(--ink);
  display: grid; place-items: center; flex-shrink: 0;
}
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { color: var(--ink2); font-size: 14.5px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: var(--radius-pill);
  font-size: 14.5px; font-weight: 600; cursor: pointer;
  border: 1px solid transparent; transition: transform .12s ease, opacity .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); opacity: .85; }
.btn-primary { background: var(--ink); color: #fff; }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-sage  { background: var(--sage); color: var(--ink); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; border-radius: 2px; }

/* Language toggle (segmented pill, injected by app.js) */
.lang-toggle {
  display: inline-flex; align-items: center; gap: 2px; margin-left: auto;
  margin-right: 14px; background: var(--tint); border: 1px solid var(--line);
  border-radius: var(--radius-pill); padding: 3px;
}
.lang-toggle button {
  border: 0; background: none; cursor: pointer; font-family: var(--font);
  font-size: 12px; font-weight: 700; letter-spacing: 0.4px; color: var(--mute);
  padding: 5px 11px; border-radius: var(--radius-pill); transition: all .15s ease;
}
.lang-toggle button.active { background: var(--ink); color: #fff; }
@media (max-width: 640px) { .lang-toggle { margin-left: 0; } }

/* Dual-language content blocks */
[data-lang-block] { display: none; }
html[data-lang="en"] [data-lang-block="en"] { display: block; }
html[data-lang="fr"] [data-lang-block="fr"] { display: block; }

/* Elements that should only appear in French (e.g. the legal FR notice) */
.fr-only { display: none; }
html[data-lang="fr"] .fr-only { display: block; }

/* ── Hero ────────────────────────────────────────────────── */

.hero { padding: 96px 0 64px; text-align: center; }
.hero h1 {
  font-size: clamp(36px, 6vw, 60px); font-weight: 700;
  letter-spacing: -1.6px; line-height: 1.05; margin: 20px auto 0; max-width: 14ch;
}
.hero p { font-size: clamp(16px, 2.4vw, 20px); color: var(--mute);
  margin: 18px auto 0; max-width: 52ch; }
.hero-cta { display: flex; gap: 12px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(205,233,214,0.4); border: 1px solid rgba(107,142,114,0.25);
  color: var(--sage-deep); font-size: 12.5px; font-weight: 600;
  padding: 7px 14px; border-radius: var(--radius-pill);
}

/* ── Feature grid ────────────────────────────────────────── */

.grid { display: grid; gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line2);
  border-radius: var(--radius-card); padding: 26px;
  box-shadow: var(--shadow-sm);
}
.card-icon {
  width: 44px; height: 44px; border-radius: 13px; background: var(--tint);
  display: grid; place-items: center; margin-bottom: 16px;
}
.card h3 { font-size: 17px; font-weight: 650; letter-spacing: -0.3px; }
.card p { color: var(--mute); font-size: 14.5px; margin-top: 8px; }

.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(26px, 4vw, 36px); font-weight: 700; letter-spacing: -0.8px; }
.section-head p { color: var(--mute); margin-top: 10px; }

/* ── Legal / document pages ──────────────────────────────── */

.doc-header { padding: 56px 0 24px; border-bottom: 1px solid var(--line); }
.doc-header h1 { font-size: clamp(30px, 5vw, 44px); font-weight: 700; letter-spacing: -1px; }
.doc-meta { color: var(--mute); font-size: 14px; margin-top: 10px; }

.doc-body { padding: 40px 0 80px; }
.doc-body h2 {
  font-size: 21px; font-weight: 650; letter-spacing: -0.4px;
  margin: 40px 0 12px; scroll-margin-top: 88px;
}
.doc-body h3 { font-size: 16.5px; font-weight: 650; margin: 24px 0 8px; }
.doc-body p, .doc-body li { color: var(--ink2); font-size: 15.5px; margin-bottom: 12px; }
.doc-body ul, .doc-body ol { padding-left: 22px; margin-bottom: 12px; }
.doc-body li { margin-bottom: 6px; }
.doc-body strong { color: var(--ink); font-weight: 650; }

.callout {
  background: rgba(205,233,214,0.3); border: 1px solid rgba(107,142,114,0.22);
  border-radius: var(--radius-md); padding: 18px 20px; margin: 24px 0;
  font-size: 14.5px; color: var(--ink2);
}
.callout.warn {
  background: rgba(201,122,59,0.08); border-color: rgba(201,122,59,0.25);
}

/* Table of contents */
.toc {
  background: var(--surface); border: 1px solid var(--line2);
  border-radius: var(--radius-md); padding: 20px 24px; margin: 24px 0 8px;
}
.toc-title { font-size: 11px; font-weight: 600; letter-spacing: 1px;
  text-transform: uppercase; color: var(--mute); margin-bottom: 12px; }
.toc ol { list-style: none; padding: 0; columns: 2; column-gap: 32px; }
.toc li { margin-bottom: 8px; }
.toc a { color: var(--ink2); font-size: 14px; }

/* ── FAQ accordion ───────────────────────────────────────── */

.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 20px 0; font-size: 16.5px; font-weight: 600; color: var(--ink);
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-family: var(--font);
}
.faq-q .chev { transition: transform .2s ease; color: var(--mute); flex-shrink: 0; }
.faq-item.open .chev { transform: rotate(90deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .28s ease; }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a-inner { padding-bottom: 20px; color: var(--ink2); font-size: 15px; }

.help-cats { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-bottom: 48px; }
.help-cat { background: var(--surface); border: 1px solid var(--line2);
  border-radius: var(--radius-card); padding: 22px; text-align: left; }
.help-cat h3 { font-size: 16px; font-weight: 650; margin-top: 12px; }
.help-cat p { color: var(--mute); font-size: 14px; margin-top: 6px; }

/* ── Contact ─────────────────────────────────────────────── */

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-card { background: var(--surface); border: 1px solid var(--line2);
  border-radius: var(--radius-card); padding: 28px; }
.contact-card h3 { font-size: 17px; font-weight: 650; }
.contact-card p { color: var(--mute); font-size: 14.5px; margin: 8px 0 16px; }

/* ── Footer ──────────────────────────────────────────────── */

.site-footer { background: var(--ink); color: #fff; padding: 64px 0 40px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.footer-brand .brand-mark { background: rgba(255,255,255,0.1); }
.footer-tag { color: rgba(255,255,255,0.5); font-size: 14px; margin-top: 14px; max-width: 32ch; }
.footer-col h4 { font-size: 11px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase;
  color: rgba(255,255,255,0.45); margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.8); font-size: 14.5px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); margin-top: 48px; padding-top: 24px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  color: rgba(255,255,255,0.4); font-size: 13px; }
.footer-disclaimer { max-width: 100%; line-height: 1.6; }

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 860px) {
  .grid-3, .help-cats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links { position: fixed; inset: 64px 0 auto 0; flex-direction: column;
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: 20px 24px; gap: 18px; align-items: flex-start;
    transform: translateY(-150%); transition: transform .26s ease; }
  .nav-links.open { transform: translateY(0); }
  .nav-toggle { display: block; }
  .grid-3, .help-cats, .footer-grid { grid-template-columns: 1fr; }
  .toc ol { columns: 1; }
  section { padding: 48px 0; }
}