/* =====================================================================
   Formation IA — FEBISP : feuille de style globale
   Mobile-first, sans framework.
   ===================================================================== */

:root {
  --primaire: #1B3A6B;
  --primaire-fonce: #122847;
  --accent: #E8991A;
  --accent-fonce: #C77E0F;
  --fond: #F5F7FA;
  --fond-carte: #FFFFFF;
  --texte: #1A2B3C;
  --texte-doux: #6B7280;
  --succes: #27AE60;
  --alerte: #E74C3C;
  --bordure: #E5E7EB;

  --rayon: 8px;
  --rayon-petit: 4px;
  --ombre: 0 1px 3px rgba(0, 0, 0, 0.06);
  --ombre-forte: 0 4px 16px rgba(27, 58, 107, 0.10);
}

/* ---------- Reset minimal ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--texte);
  background: var(--fond);
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--primaire); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Structure ---------- */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 56px 0;
}
section + section { border-top: 1px solid var(--bordure); }

h1, h2, h3 {
  font-family: 'Inter', sans-serif;
  color: var(--primaire);
  line-height: 1.25;
  margin: 0 0 16px;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.15rem; }
p  { margin: 0 0 16px; }

@media (min-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.875rem; }
  section { padding: 72px 0; }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--primaire) 0%, var(--primaire-fonce) 100%);
  color: #FFFFFF;
  padding: 56px 0 64px;
  text-align: center;
}
.hero .logo {
  display: inline-block;
  padding: 6px 14px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  font-size: 0.875rem;
}
.hero h1 {
  color: #FFFFFF;
  font-size: 2rem;
  margin-bottom: 12px;
}
.hero .sous-titre {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 24px;
}
.hero .badge-dates {
  display: inline-block;
  background: var(--accent);
  color: #FFFFFF;
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 24px;
}
.hero .statut-places {
  margin: 24px auto 32px;
  max-width: 480px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.10);
  border-radius: var(--rayon);
  font-size: 0.95rem;
}
.hero .statut-places.statut-ouvert        { border-left: 4px solid var(--succes); }
.hero .statut-places.statut-presque_complet { border-left: 4px solid var(--accent); }
.hero .statut-places.statut-complet       { border-left: 4px solid var(--alerte); }

@media (min-width: 768px) {
  .hero { padding: 80px 0 96px; }
  .hero h1 { font-size: 2.75rem; }
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border: none;
  border-radius: var(--rayon);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
}
.btn-primary:hover { background: var(--accent-fonce); }
.btn-primary:active { transform: translateY(1px); }
.btn-secondary {
  background: #FFFFFF;
  color: var(--primaire);
  border: 2px solid var(--primaire);
}
.btn-block { display: block; width: 100%; text-align: center; }

/* ---------- Icônes pitch ---------- */
.pitch-icons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 32px;
}
.pitch-icons .icon {
  text-align: center;
  padding: 24px 16px;
  background: var(--fond-carte);
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
}
.pitch-icons .icon-symbole {
  font-size: 2rem;
  display: block;
  margin-bottom: 8px;
}
@media (min-width: 768px) {
  .pitch-icons { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- Modules ---------- */
.modules-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 32px;
}
.module-card {
  background: var(--fond-carte);
  border-radius: var(--rayon);
  padding: 24px;
  box-shadow: var(--ombre);
  border-top: 4px solid var(--primaire);
}
.module-card:nth-child(2) { border-top-color: var(--accent); }
.module-card:nth-child(3) { border-top-color: var(--succes); }
.module-card:nth-child(4) { border-top-color: #8B5CF6; }
.module-card h3 { margin-bottom: 8px; font-size: 1.15rem; }
.module-card .tag {
  display: inline-block;
  font-size: 0.8rem;
  background: var(--fond);
  color: var(--texte-doux);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
@media (min-width: 768px) {
  .modules-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Livrables ---------- */
.livrables { list-style: none; padding: 0; margin: 32px 0 0; }
.livrables li {
  padding: 14px 0;
  border-bottom: 1px solid var(--bordure);
  font-size: 1rem;
}
.livrables li:last-child { border-bottom: none; }

/* ---------- Infos pratiques ---------- */
.infos-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 32px;
}
.infos-grid > div {
  background: var(--fond-carte);
  padding: 16px 20px;
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
}
.infos-grid strong { display: block; color: var(--primaire); margin-bottom: 4px; }
@media (min-width: 768px) {
  .infos-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- FAQ <details> ---------- */
.faq details {
  background: var(--fond-carte);
  border-radius: var(--rayon);
  margin-bottom: 12px;
  box-shadow: var(--ombre);
  overflow: hidden;
}
.faq summary {
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 600;
  color: var(--primaire);
  list-style: none;
  position: relative;
  padding-right: 48px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+';
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.faq details[open] summary::after { content: '−'; }
.faq details > *:not(summary) { padding: 0 24px 18px; margin: 0; }

/* ---------- Formulaire ---------- */
.form-section {
  background: var(--fond-carte);
  padding: 28px 24px;
  border-radius: var(--rayon);
  box-shadow: var(--ombre-forte);
  margin-top: 32px;
}
.form-section h2 { margin-top: 0; }
.form-section .sous-titre-form { color: var(--texte-doux); margin-bottom: 24px; }

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.95rem;
}
.form-group .helper {
  display: block;
  color: var(--texte-doux);
  font-size: 0.85rem;
  margin-top: 4px;
}
.form-group input[type="text"],
.form-group input[type="email"],
.form-group select {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  border: 1px solid var(--bordure);
  border-radius: var(--rayon-petit);
  font-family: inherit;
  background: #FFFFFF;
  color: var(--texte);
}
.form-group input:focus,
.form-group select:focus { border-color: var(--primaire); }

.radio-group { display: flex; flex-wrap: wrap; gap: 8px; }
.radio-group label {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--bordure);
  border-radius: var(--rayon-petit);
  cursor: pointer;
  font-weight: normal;
}
.radio-group input[type="radio"] { accent-color: var(--primaire); }

.checkbox-isp {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: #FEF6E6;
  border-left: 4px solid var(--accent);
  padding: 14px 16px;
  border-radius: var(--rayon-petit);
  margin-bottom: 18px;
}
.checkbox-isp input { margin-top: 4px; accent-color: var(--accent); }

.rgpd-mention {
  font-size: 0.85rem;
  color: var(--texte-doux);
  margin-bottom: 18px;
}

.form-error {
  display: none;
  color: var(--alerte);
  font-size: 0.85rem;
  margin-top: 4px;
}
.form-group.has-error .form-error { display: block; }
.form-group.has-error input,
.form-group.has-error select { border-color: var(--alerte); }

.form-message {
  padding: 16px;
  border-radius: var(--rayon-petit);
  margin-bottom: 20px;
  font-size: 0.95rem;
}
.form-message.error   { background: #FDECEA; color: var(--alerte); border-left: 4px solid var(--alerte); }
.form-message.success { background: #E6F7EC; color: var(--succes); border-left: 4px solid var(--succes); }

/* ---------- Footer ---------- */
footer {
  background: var(--primaire-fonce);
  color: rgba(255, 255, 255, 0.85);
  padding: 32px 0;
  text-align: center;
  font-size: 0.9rem;
}
footer a { color: rgba(255, 255, 255, 0.85); }
footer .footer-admin { color: rgba(255, 255, 255, 0.4); margin-top: 12px; display: inline-block; font-size: 0.8rem; }

/* ---------- Pages utilitaires (confirmer, annuler, satisfaction, politique) ---------- */
.page-utility {
  min-height: 80vh;
  padding: 56px 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.page-utility .card {
  background: var(--fond-carte);
  padding: 32px 28px;
  border-radius: var(--rayon);
  box-shadow: var(--ombre-forte);
  max-width: 640px;
  margin: 0 auto;
}
.page-utility .card.success { border-top: 6px solid var(--succes); }
.page-utility .card.warning { border-top: 6px solid var(--accent); }
.page-utility .card.error   { border-top: 6px solid var(--alerte); }

/* ---------- Étoiles satisfaction ---------- */
.stars {
  display: flex;
  flex-direction: row-reverse;
  justify-content: flex-end;
  gap: 4px;
}
.stars input { display: none; }
.stars label {
  font-size: 2rem;
  color: var(--bordure);
  cursor: pointer;
  line-height: 1;
  transition: color 0.1s ease;
}
.stars label::before { content: '★'; }
.stars input:checked ~ label,
.stars label:hover,
.stars label:hover ~ label { color: var(--accent); }

textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 1rem;
  border: 1px solid var(--bordure);
  border-radius: var(--rayon-petit);
  font-family: inherit;
  min-height: 90px;
  resize: vertical;
}

/* ---------- Liens skip & accessibilité ---------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}