/**
 * Tutobox — landing.css
 * Primitives partagées par les pages marketing :
 *   index.html, tarification.html, comment-ca-marche.html, cas-d-usage.html
 *
 * Convention : classes préfixées `.lp-*` (landing-page) + boutons
 * `.btn-solid` / `.btn-outline` / `.btn-ghost` (variante `.lg`).
 *
 * Charger après colors_and_type.css.
 */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--ds-font-sans);
  font-size: var(--ds-text-sm, 14px);
  line-height: var(--ds-lineheight-normal, 1.5);
  color: var(--ds-slate-900);
  background: var(--ds-color-bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: inherit; }
button { font-family: inherit; }

/* ── Buttons ─────────────────────────────────────────────────
 * Scope: page body (hero, sections). Intentionally separate from
 * .tb-btn-solid in site-chrome.js (header CTA only — no .lg/.disabled).
 * ──────────────────────────────────────────────────────────── */
.btn-solid {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  background: var(--ds-color-accent);
  color: var(--ds-color-text-inverse); border: 0; border-radius: var(--ds-radius-md);
  box-shadow: 0 0 0 1px var(--ds-border-accent-hover);
  font: 600 13px/1 var(--ds-font-sans); letter-spacing: -0.005em;
  cursor: pointer; text-decoration: none;
}
.btn-solid.lg { padding: 14px 22px; font-size: 14px; }
.btn-solid:disabled { opacity: .5; cursor: not-allowed; }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  background: var(--ds-color-surface); border: 1px solid var(--ds-slate-200);
  border-radius: var(--ds-radius-md);
  font: 600 13px/1 var(--ds-font-sans); letter-spacing: -0.005em;
  color: var(--ds-slate-900); cursor: pointer; text-decoration: none;
  transition: border-color var(--ds-duration-fast), background var(--ds-duration-fast);
}
.btn-outline:hover { border-color: var(--ds-slate-300); background: var(--ds-slate-50); }
.btn-outline.lg { padding: 14px 22px; font-size: 14px; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 0;
  background: transparent; border: 0;
  font: 600 13px/1 var(--ds-font-sans); letter-spacing: -0.005em;
  color: var(--ds-slate-900); cursor: pointer; text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ds-duration-fast);
}
.btn-ghost:hover { border-bottom-color: var(--ds-slate-900); }

/* ── Layout ──────────────────────────────────────────────── */
.lp-wrap { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.lp-section { padding: 96px 0; }
.lp-section + .lp-section { padding-top: 0; }
.lp-section.tight { padding: 64px 0; }
@media (max-width: 760px) {
  .lp-section { padding: 64px 0; }
  .lp-wrap { padding: 0 20px; }
}

.lp-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 11px/1 var(--ds-font-mono);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ds-color-accent);
}
.lp-eyebrow::before {
  content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: currentColor; opacity: 0.7;
}
.lp-section-title {
  font: 700 36px/1.1 var(--ds-font-sans); letter-spacing: -0.03em;
  color: var(--ds-color-accent); margin: 12px 0 16px;
  text-wrap: balance;
}
@media (max-width: 540px) { .lp-section-title { font-size: 28px; } }

.lp-section-lede {
  font: 400 16px/1.6 var(--ds-font-sans); color: var(--ds-color-text-muted);
  letter-spacing: -0.005em; max-width: 56ch;
  text-wrap: pretty;
}
.lp-section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.lp-section-head .lp-section-lede { margin: 0 auto; }

/* ── Hero ────────────────────────────────────────────────── */
.lp-hero {
  position: relative;
  padding: 80px 0 0;
  background: var(--ds-color-surface-muted);
  overflow: hidden;
  border-bottom: 1px solid var(--ds-color-border);
}
.lp-hero-inner {
  padding: 0 0 80px;
  text-align: center;
  max-width: 760px; margin: 0 auto;
}
.lp-hero-h1 {
  font: 800 56px/1.04 var(--ds-font-sans);
  letter-spacing: -0.04em; color: var(--ds-slate-900);
  margin: 14px 0 18px;
  text-wrap: balance;
}
.lp-hero-h1 .accent { color: var(--ds-color-accent); }
@media (max-width: 760px) { .lp-hero-h1 { font-size: 40px; } }
@media (max-width: 460px) { .lp-hero-h1 { font-size: 32px; } }

.lp-hero-lede {
  font: 400 18px/1.6 var(--ds-font-sans); color: var(--ds-color-text-muted);
  letter-spacing: -0.005em;
  margin: 0 auto 28px; max-width: 58ch;
  text-wrap: pretty;
}
.lp-hero-cta {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: center; align-items: center;
}

/* ── CTA finale ─────────────────────────────────────────── */
.lp-cta {
  position: relative;
  padding: 80px 32px;
  background: var(--ds-bg-inverse);
  color: var(--ds-color-text-inverse);
  overflow: hidden;
  text-align: center;
}
.lp-cta-inner { max-width: 720px; margin: 0 auto; position: relative; }
.lp-cta h2 {
  font: 800 40px/1.1 var(--ds-font-sans); letter-spacing: -0.035em;
  margin: 14px 0 12px;
  text-wrap: balance;
}
@media (max-width: 540px) { .lp-cta h2 { font-size: 28px; } }
.lp-cta p {
  font: 400 16px/1.6 var(--ds-font-sans); color: var(--ds-color-text-inverse-muted);
  margin: 0 auto 28px; max-width: 50ch;
}
.lp-cta .lp-eyebrow { color: var(--ds-blue-300); }
.lp-cta-row { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.lp-cta .btn-outline {
  background: var(--ds-surface-inverse-subtle); border-color: var(--ds-border-inverse); color: var(--ds-color-text-inverse);
}
.lp-cta .btn-outline:hover { background: var(--ds-surface-inverse-muted); border-color: var(--ds-border-inverse-strong); }

/* ── Cards génériques ───────────────────────────────────── */
.lp-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 28px;
  background: var(--ds-color-surface);
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-lg);
  box-shadow: var(--ds-shadow-xs);
  transition: border-color var(--ds-duration-normal);
}
.lp-card:hover {
  border-color: var(--ds-border-accent-hover);
}
.lp-card-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: var(--ds-radius-lg);
  background: var(--ds-color-accent);
  color: var(--ds-color-text-inverse);
  font: 800 14px/1 var(--ds-font-mono); letter-spacing: 0.04em;
  margin-bottom: 18px;
}
.lp-card-title {
  font: 700 19px/1.25 var(--ds-font-sans); letter-spacing: -0.02em;
  color: var(--ds-color-text); margin: 0 0 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.lp-card-text {
  font: 400 14px/1.55 var(--ds-font-sans); color: var(--ds-color-text-muted);
  letter-spacing: -0.005em; margin: 0;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.lp-card-meta {
  margin-top: auto; padding-top: 14px;
  border-top: 1px solid var(--ds-color-border);
  font: 500 11px/1 var(--ds-font-mono);
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ds-color-text-subtle);
  display: flex; align-items: center; gap: 6px;
}

/* ── Grids utility ─────────────────────────────────────── */
.lp-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.lp-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.lp-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 980px) {
  .lp-grid-3, .lp-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .lp-grid-3, .lp-grid-4, .lp-grid-2 { grid-template-columns: 1fr; }
}

/* ── FAQ accordion ─────────────────────────────────────── */
.lp-faq {
  max-width: 800px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 8px;
}
.lp-faq details {
  background: var(--ds-color-surface);
  border: 1px solid var(--ds-color-border);
  border-radius: 12px;
  padding: 0;
  transition: border-color 150ms;
}
.lp-faq details[open] { border-color: rgba(37, 99, 235, 0.35); }
.lp-faq summary {
  padding: 18px 22px;
  font: 600 15px/1.4 var(--ds-font-sans);
  letter-spacing: -0.015em; color: var(--ds-color-text);
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px;
  list-style: none;
}
.lp-faq summary::-webkit-details-marker { display: none; }
.lp-faq summary::after {
  content: ""; display: inline-block; flex: none;
  width: 16px; height: 16px;
  /* %2364748b = #64748b (slate-500) — URL-encoded in SVG data URI */
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>") center/contain no-repeat;
  transition: transform 200ms;
}
.lp-faq details[open] summary::after { transform: rotate(180deg); }
.lp-faq .lp-faq-body {
  padding: 0 22px 18px;
  font: 400 14px/1.65 var(--ds-font-sans); color: var(--ds-color-text-muted);
  letter-spacing: -0.005em;
}
.lp-faq .lp-faq-body p { margin: 8px 0; }
.lp-faq .lp-faq-body a { color: var(--ds-color-accent); text-decoration: underline; }

/* ── Trust line (sous-hero) ────────────────────────────── */
.lp-trust {
  display: flex; flex-wrap: wrap; gap: 18px;
  justify-content: center;
  font: 500 12px/1 var(--ds-font-mono);
  letter-spacing: 0.04em; color: var(--ds-color-text-muted);
}
.lp-trust span { display: inline-flex; align-items: center; gap: 6px; }
.lp-trust svg { color: var(--ds-color-success, #10b981); }