/* MoneyDocs landing — couleurs alignées sur l'app Flutter.
   Source des couleurs : lib/core/design_system/design_colors.dart
   - primaryBlue = #1E4DA8 (light)
   - primaryBlueDarkMode = #64B5F6 (dark)
   - backgroundDark = #121212, backgroundLight = #FAFAFA
   - surfaceDark = #1E1E1E, cardSurfaceDark = #242424
   Flexbox sticky footer : body flex-column + main flex:1 = pas de
   footer qui remonte quand la page est courte. */

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

:root {
  /* Dark mode par défaut — cohérent avec le thème sombre de l'app */
  --bg: #121212;
  --bg-soft: #1e1e1e;
  --bg-card: #242424;
  --fg: #ffffff;
  --fg-muted: #9e9e9e;
  --primary: #64b5f6;
  --primary-hover: #90caf9;
  --accent: #ffb74d;
  --border: #2d2d2d;
  --max-width: 1040px;
  --narrow-width: 720px;
  --radius: 10px;
}

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

main { flex: 1 0 auto; }

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

/* ---------- HEADER ---------- */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.logo {
  font-weight: 700;
  font-size: 20px;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.site-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.15s;
}
.site-nav a:hover { color: var(--fg); }

/* ---------- HERO ---------- */
.hero {
  padding: 72px 0 56px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-title {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--primary);
}
.hero-tagline {
  font-size: 22px;
  color: var(--fg);
  font-weight: 500;
  margin-bottom: 16px;
}
.hero-subtitle {
  font-size: 17px;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto 32px;
}
.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, border-color 0.15s;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary.btn-disabled {
  background: var(--bg-card);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  cursor: default;
}
.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- SECTIONS ---------- */
.section { padding: 64px 0; border-bottom: 1px solid var(--border); }
.section h2 {
  font-size: 28px;
  margin-bottom: 32px;
  letter-spacing: -0.01em;
}

/* Benefits — grande section "pourquoi", juste après le hero.
   Design plus visible (icônes plus grosses, fond subtilement différent)
   pour attirer le regard vers le « ce que ça change pour vous ». */
.benefits {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}
.benefits h2 { text-align: center; font-size: 30px; margin-bottom: 40px; }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.benefit-card {
  text-align: center;
  padding: 24px 16px;
}
.benefit-icon {
  font-size: 44px;
  margin-bottom: 16px;
  line-height: 1;
}
.benefit-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.benefit-card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* Features grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-icon { font-size: 28px; margin-bottom: 12px; }
.feature-card h3 { font-size: 17px; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--fg-muted); }

/* Use cases grid — plus respirant, 2 colonnes max */
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.use-case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius);
  padding: 28px;
}
.use-case-icon { font-size: 32px; margin-bottom: 14px; }
.use-case-card h3 { font-size: 18px; margin-bottom: 10px; }
.use-case-card p { font-size: 15px; color: var(--fg-muted); line-height: 1.7; }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.faq-item summary {
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-size: 24px;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.15s;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item[open] summary { margin-bottom: 10px; }
.faq-item p { color: var(--fg-muted); font-size: 15px; line-height: 1.7; }

/* Plain lists for trust / who */
.plain-list { list-style: none; padding: 0; }
.plain-list li {
  padding: 10px 0 10px 24px;
  position: relative;
  color: var(--fg-muted);
}
.plain-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* ---------- LEGAL / ARTICLES ---------- */
.legal { padding: 56px 0; }
.legal h1 { font-size: 32px; margin-bottom: 12px; letter-spacing: -0.01em; }
.legal h2 { font-size: 20px; margin: 32px 0 12px; }
.legal h3 { font-size: 16px; margin: 24px 0 8px; }
.legal p, .legal li { color: var(--fg); margin-bottom: 10px; }
.legal ul, .legal ol { padding-left: 22px; margin-bottom: 10px; }
.legal a { color: var(--primary); }
.legal .muted { color: var(--fg-muted); font-size: 13px; margin-bottom: 24px; }
.legal hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }

/* ---------- FOOTER ---------- */
.site-footer {
  flex-shrink: 0;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  padding: 40px 0 20px;
  color: var(--fg-muted);
  font-size: 14px;
}
.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
}
.footer-col h4 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg);
  margin-bottom: 12px;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 6px; }
.footer-col a { color: var(--fg-muted); text-decoration: none; }
.footer-col a:hover { color: var(--fg); }
.lang-switcher a.active { color: var(--primary); font-weight: 600; }
.footer-bottom {
  border-top: 1px solid var(--border);
  margin-top: 32px;
  padding-top: 20px;
}
.prevail { font-size: 12px; color: var(--fg-muted); font-style: italic; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 640px) {
  .hero-title { font-size: 40px; }
  .hero-tagline { font-size: 18px; }
  .hero-subtitle { font-size: 15px; }
  .section h2 { font-size: 22px; }
  .site-nav { gap: 12px; }
  .site-nav a { font-size: 13px; }
  .header-inner { flex-direction: column; gap: 12px; align-items: flex-start; }
}

/* ---------- LIGHT MODE — couleurs de l'app en mode clair ---------- */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --bg-soft: #f5f7fa;
    --bg-card: #ffffff;
    --fg: #121212;
    --fg-muted: #616161;
    --primary: #1e4da8;
    --primary-hover: #153a7d;
    --accent: #ff9800;
    --border: #e0e0e0;
  }
  .feature-card, .use-case-card, .faq-item { box-shadow: 0 1px 3px rgba(30, 77, 168, 0.06); }
  .benefit-card:hover { transform: translateY(-2px); transition: transform 0.2s; }
}