/* ============================================================
   Mathéquête — Styles custom (complète Pico.css)
   Palette aventure : or, bleu nuit, parchemin, rouge boussole
   ============================================================ */

:root {
  --aventure-or: #d4a017;
  --aventure-or-fonce: #a8761a;
  --aventure-bleu: #1e3a5f;
  --aventure-bleu-clair: #2e5a8f;
  --aventure-rouge: #c1432b;
  --parchemin: #f5e6c8;
  --parchemin-fonce: #e8d5a8;
  --parchemin-clair: #fbf4e0;
  --encre: #3a2c1a;

  /* Override Pico */
  --pico-primary: var(--aventure-bleu);
  --pico-primary-hover: var(--aventure-bleu-clair);
  --pico-primary-focus: rgba(30, 58, 95, 0.25);
  --pico-primary-inverse: #fff;
  --pico-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --pico-border-radius: 0.5rem;
}

/* ---------- Polices ---------- */
.font-aventure {
  font-family: 'Cinzel', 'IM Fell English', Georgia, serif;
  letter-spacing: 0.02em;
}
.font-manuscrit {
  font-family: 'Caveat', 'Brush Script MT', cursive;
}
h1, h2, h3, .titre-aventure {
  font-family: 'Cinzel', Georgia, serif;
  font-weight: 700;
  color: var(--aventure-bleu);
  letter-spacing: 0.01em;
}

/* ---------- Body de base ---------- */
body {
  background: var(--parchemin-clair);
  color: var(--encre);
}

/* ---------- Header / Nav ---------- */
.site-nav {
  background: var(--aventure-bleu);
  padding: 0.8rem 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}
.site-nav a {
  color: var(--parchemin);
  text-decoration: none;
  font-weight: 500;
}
.site-nav a:hover { color: var(--aventure-or); }
.site-nav .logo { display: flex; align-items: center; }
.site-nav .logo svg { height: 44px; width: auto; }
.site-nav .logo svg text { fill: var(--parchemin) !important; }
.site-nav .nav-links {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  align-items: center;
}

/* ---------- Hero parchemin ---------- */
.hero {
  background:
    radial-gradient(ellipse at top left, rgba(212,160,23,0.18), transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(193,67,43,0.15), transparent 60%),
    linear-gradient(135deg, var(--parchemin) 0%, var(--parchemin-fonce) 100%);
  position: relative;
  padding: 4rem 1rem 5rem;
  overflow: hidden;
  border-bottom: 4px solid var(--aventure-or);
}
.hero::before {
  /* texture parchemin (bruit subtil via svg) */
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.85' numOctaves='2' seed='5'/><feColorMatrix values='0 0 0 0 0.5 0 0 0 0 0.4 0 0 0 0 0.2 0 0 0 0.08 0'/></filter><rect width='200' height='200' filter='url(%23n)'/></svg>");
  opacity: 0.4;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  margin: 1rem 0 0.6rem;
  color: var(--aventure-bleu);
  text-shadow: 1px 1px 0 var(--parchemin-clair), 2px 2px 6px rgba(0,0,0,0.1);
}
.hero .slogan {
  font-family: 'Caveat', cursive;
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  color: var(--aventure-rouge);
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-aventure {
  display: inline-block;
  padding: 0.9rem 2rem;
  background: linear-gradient(180deg, var(--aventure-or) 0%, var(--aventure-or-fonce) 100%);
  color: #fff !important;
  border: 2px solid var(--aventure-or-fonce);
  border-radius: 0.5rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 0 var(--aventure-or-fonce), 0 6px 12px rgba(0,0,0,0.2);
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
  font-size: 1.05rem;
}
.btn-aventure:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 var(--aventure-or-fonce), 0 10px 16px rgba(0,0,0,0.25);
}
.btn-aventure:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--aventure-or-fonce);
}
.btn-secondaire {
  display: inline-block;
  padding: 0.9rem 2rem;
  background: transparent;
  color: var(--aventure-bleu) !important;
  border: 2px solid var(--aventure-bleu);
  border-radius: 0.5rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.btn-secondaire:hover {
  background: var(--aventure-bleu);
  color: var(--parchemin) !important;
}

/* ---------- Sections ---------- */
.section {
  padding: 4rem 1rem;
  max-width: 1200px;
  margin: 0 auto;
}
.section-titre {
  text-align: center;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  margin-bottom: 0.5rem;
}
.section-sous-titre {
  text-align: center;
  color: var(--encre);
  opacity: 0.75;
  margin-bottom: 3rem;
  font-size: 1.05rem;
}
.section-pro {
  /* Sections B2B sobres */
  background: #fafafa;
  border-top: 1px solid #e5e5e5;
  border-bottom: 1px solid #e5e5e5;
}

/* ---------- Cartes fonctionnalités ---------- */
.cartes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.carte {
  background: #fff;
  border: 2px solid var(--parchemin-fonce);
  border-radius: 0.8rem;
  padding: 1.5rem;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.carte:hover {
  transform: translateY(-4px);
  border-color: var(--aventure-or);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.carte .emoji {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 0.6rem;
}
.carte h3 {
  font-size: 1.2rem;
  margin: 0.5rem 0;
  color: var(--aventure-bleu);
}
.carte p {
  font-size: 0.95rem;
  color: var(--encre);
  opacity: 0.85;
  margin: 0;
}

/* ---------- Étapes ---------- */
.etapes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  counter-reset: etape;
}
.etape {
  text-align: center;
  position: relative;
  padding-top: 3rem;
}
.etape::before {
  counter-increment: etape;
  content: counter(etape);
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 3rem; height: 3rem;
  background: var(--aventure-or);
  color: #fff;
  font-family: 'Cinzel', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 3px solid var(--aventure-bleu);
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}
.etape h3 {
  font-size: 1.15rem;
  margin-bottom: 0.4rem;
}

/* ---------- Tarifs ---------- */
.tarifs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
}
.tarif-carte {
  background: #fff;
  border: 3px solid var(--aventure-or);
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  position: relative;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.tarif-carte.b2b {
  border-color: var(--aventure-bleu);
  background: #fff;
}
.tarif-carte h3 {
  margin-top: 0;
  font-size: 1.4rem;
}
.tarif-prix {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--aventure-rouge);
  margin: 1rem 0 0.3rem;
  font-family: 'Cinzel', Georgia, serif;
}
.tarif-prix small {
  font-size: 0.85rem;
  color: var(--encre);
  opacity: 0.7;
  font-weight: 400;
}

/* ---------- FAQ accordion ---------- */
.faq {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--parchemin-fonce);
  padding: 0;
}
.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 1.2rem 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--aventure-bleu);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: inherit;
}
.faq-question:hover { color: var(--aventure-or-fonce); }
.faq-question .chevron {
  font-size: 1.3rem;
  transition: transform 0.2s;
  color: var(--aventure-or);
}
.faq-question[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}
.faq-reponse {
  padding: 0 0.5rem 1.2rem;
  color: var(--encre);
  line-height: 1.6;
}

/* ---------- Tableaux ---------- */
.tableau-paliers {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  border-radius: 0.5rem;
  overflow: hidden;
}
.tableau-paliers th {
  background: var(--aventure-bleu);
  color: var(--parchemin);
  padding: 0.9rem;
  text-align: left;
  font-family: 'Cinzel', Georgia, serif;
  font-size: 0.95rem;
}
.tableau-paliers td {
  padding: 0.8rem 0.9rem;
  border-bottom: 1px solid #eee;
}
.tableau-paliers tr:last-child td { border-bottom: 0; }
.tableau-paliers tr:hover td { background: var(--parchemin-clair); }
.tableau-paliers .recommande {
  background: rgba(212, 160, 23, 0.12);
}
.badge-reco {
  background: var(--aventure-or);
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: 0.3rem;
  font-size: 0.75rem;
  font-weight: 700;
  margin-left: 0.4rem;
}

/* ---------- Page achat ---------- */
.tabs {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin: 2rem 0 2.5rem;
  border-bottom: 2px solid var(--parchemin-fonce);
  flex-wrap: wrap;
}
.tab-btn {
  background: transparent;
  border: 0;
  padding: 0.9rem 1.6rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--encre);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-family: inherit;
  transition: color 0.15s, border-color 0.15s;
}
.tab-btn.active {
  color: var(--aventure-bleu);
  border-bottom-color: var(--aventure-or);
}
.tab-btn:hover { color: var(--aventure-bleu); }

.sku-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}
.sku-carte {
  background: #fff;
  border: 2px solid var(--parchemin-fonce);
  border-radius: 0.8rem;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.sku-carte:hover {
  transform: translateY(-3px);
  border-color: var(--aventure-or);
  box-shadow: 0 6px 16px rgba(0,0,0,0.1);
}
.sku-carte h3 {
  margin: 0 0 0.5rem;
  color: var(--aventure-bleu);
  font-size: 1.2rem;
}
.sku-prix {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--aventure-rouge);
  font-family: 'Cinzel', Georgia, serif;
  margin: 0.5rem 0 0.1rem;
}
.sku-taxes {
  font-size: 0.85rem;
  color: var(--encre);
  opacity: 0.7;
  margin-bottom: 0.8rem;
}
.sku-details {
  flex: 1;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  color: var(--encre);
}
.sku-carte button {
  width: 100%;
}

.toast-erreur {
  background: #fdecea;
  border: 1px solid var(--aventure-rouge);
  color: var(--aventure-rouge);
  padding: 1rem;
  border-radius: 0.5rem;
  margin: 1rem 0;
  text-align: center;
  font-weight: 600;
}
.note-paiement {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--encre);
  opacity: 0.75;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 1rem; height: 1rem;
  border: 2px solid #fff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 0.4rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Page merci ---------- */
.merci-hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
}
.merci-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--aventure-rouge);
}
.merci-etapes {
  max-width: 700px;
  margin: 2rem auto;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.merci-etape {
  background: #fff;
  border-left: 5px solid var(--aventure-or);
  padding: 1.2rem 1.5rem;
  border-radius: 0.4rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}
.merci-etape strong {
  color: var(--aventure-bleu);
  display: block;
  margin-bottom: 0.3rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--aventure-bleu);
  color: var(--parchemin);
  padding: 2.5rem 1rem 1.5rem;
  margin-top: 4rem;
  font-size: 0.92rem;
}
.site-footer .container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}
.site-footer h4 {
  color: var(--aventure-or);
  font-family: 'Cinzel', Georgia, serif;
  margin: 0 0 0.6rem;
  font-size: 1rem;
}
.site-footer p, .site-footer strong {
  color: var(--parchemin);
  opacity: 0.92;
}
.site-footer a {
  color: var(--parchemin);
  text-decoration: none;
}
.site-footer a:hover { color: var(--aventure-or); }
.copyright {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(245, 230, 200, 0.2);
  font-size: 0.85rem;
  opacity: 0.85;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .hero { padding: 2.5rem 1rem 3rem; }
  .section { padding: 2.5rem 1rem; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .btn-aventure, .btn-secondaire {
    width: 100%; text-align: center;
  }
  .site-nav .container { gap: 0.5rem; }
  .site-nav .nav-links { gap: 0.7rem; font-size: 0.9rem; }
  .tabs { gap: 0; }
  .tab-btn { padding: 0.7rem 1rem; font-size: 0.95rem; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 1.9rem; }
  .site-nav .logo svg { height: 36px; }
}

/* Accessibilité focus */
:focus-visible {
  outline: 3px solid var(--aventure-or);
  outline-offset: 2px;
}