/* =============================================================================
   Stakly — Site CSS unifie (2026-04-18)
   Light theme, violet accents, mobile-first
   ============================================================================= */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

:root {
  --violet-50: #f5f3ff;
  --violet-100: #ede9fe;
  --violet-200: #ddd6fe;
  --violet-500: #8b5cf6;
  --violet-600: #7c3aed;
  --violet-700: #6d28d9;
  --violet-800: #5b21b6;
  --violet-900: #4c1d95;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --cyan-400: #22d3ee;
  --green-500: #22c55e;
  --amber-500: #f59e0b;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --max-w: 1140px;
}

body {
  min-height: 100vh;
  background: #fff;
  color: var(--slate-800);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--violet-600); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--violet-800); }
img { max-width: 100%; display: block; }

/* ===== HEADER / NAV ===== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-100);
  transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; gap: 0.5rem; }
.nav-logo svg { height: 32px; width: auto; }

.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a {
  color: var(--slate-600);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--violet-700); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.3rem;
  background: var(--violet-600);
  color: #fff !important;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.15s;
}
.nav-cta:hover { background: var(--violet-700); color: #fff !important; transform: translateY(-1px); }

.nav-mobile-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-mobile-btn svg { width: 24px; height: 24px; stroke: var(--slate-700); }

/* ===== SECTIONS ===== */

section { padding: 5rem 1.5rem; }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-alt { background: var(--slate-50); }

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  color: var(--slate-900);
  margin-bottom: 0.6rem;
  line-height: 1.2;
}
.section-subtitle {
  text-align: center;
  color: var(--slate-500);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto 3rem;
}

/* ===== HERO ===== */

.hero {
  padding: 6rem 1.5rem 5rem;
  background: linear-gradient(160deg, #fff 0%, var(--violet-50) 60%, #fff 100%);
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  background: var(--violet-100);
  color: var(--violet-700);
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--slate-900);
  margin-bottom: 1.2rem;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--violet-600), var(--violet-800));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--slate-600);
  margin-bottom: 2rem;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  background: var(--violet-600);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-primary:hover { background: var(--violet-700); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(124,58,237,0.3); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  background: #fff;
  color: var(--violet-700);
  border: 2px solid var(--violet-200);
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--violet-400); background: var(--violet-50); }

/* Hero mockup */
.hero-visual {
  position: relative;
  background: var(--slate-900);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.hero-visual::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 36px;
  background: var(--slate-800);
  border-radius: 16px 16px 0 0;
}
.hero-dots {
  position: absolute;
  top: 12px; left: 14px;
  display: flex; gap: 6px;
}
.hero-dots span { width: 10px; height: 10px; border-radius: 50%; }
.hero-dots span:nth-child(1) { background: #ff5f57; }
.hero-dots span:nth-child(2) { background: #ffbd2e; }
.hero-dots span:nth-child(3) { background: #27c93f; }

.hero-dashboard {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.hero-kpi {
  background: rgba(139,92,246,0.12);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 10px;
  padding: 1rem;
}
.hero-kpi-label { font-size: 0.72rem; color: var(--slate-300); text-transform: uppercase; letter-spacing: 0.5px; }
.hero-kpi-value { font-size: 1.6rem; font-weight: 700; color: #fff; margin-top: 0.2rem; }
.hero-kpi-trend { font-size: 0.75rem; margin-top: 0.2rem; }
.hero-kpi-trend.up { color: var(--green-500); }
.hero-kpi-trend.down { color: var(--amber-500); }

.hero-chat {
  grid-column: 1 / -1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  padding: 1rem;
}
.hero-chat-msg {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  align-items: flex-start;
}
.hero-chat-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--violet-600);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; color: #fff; font-weight: 700;
  flex-shrink: 0;
}
.hero-chat-bubble {
  background: rgba(139,92,246,0.15);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.8rem;
  color: var(--slate-200);
  line-height: 1.4;
}

/* ===== STEPS (Comment ca marche) ===== */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}
.step-card {
  text-align: center;
  padding: 2rem 1.5rem;
}
.step-icon {
  width: 64px; height: 64px;
  margin: 0 auto 1.2rem;
  background: var(--violet-100);
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  background: var(--violet-600);
  color: #fff;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
}
.step-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
}
.step-card p {
  color: var(--slate-500);
  font-size: 0.95rem;
}

/* ===== EXPERTS ===== */

.experts-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
}
.expert-card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.25s;
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--violet-200); }

.expert-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
}
.expert-card h4 { font-size: 1rem; font-weight: 700; color: var(--slate-900); }
.expert-card .expert-role { font-size: 0.82rem; color: var(--violet-600); font-weight: 600; margin-bottom: 0.6rem; }
.expert-card .expert-quote {
  font-size: 0.82rem;
  color: var(--slate-500);
  font-style: italic;
  line-height: 1.5;
}
.experts-more {
  text-align: center;
  margin-top: 2rem;
}

/* ===== PACKS CAROUSEL ===== */

.packs-scroll {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.pack-card {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 1.8rem;
  transition: all 0.25s;
  display: flex;
  flex-direction: column;
}
.pack-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--violet-200); }

.pack-icon { font-size: 2.2rem; margin-bottom: 1rem; }
.pack-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--slate-900); margin-bottom: 0.4rem; }
.pack-card p { font-size: 0.9rem; color: var(--slate-500); flex: 1; margin-bottom: 1rem; }
.pack-price { font-size: 0.85rem; color: var(--violet-600); font-weight: 600; margin-bottom: 1rem; }
.pack-card .btn-sm {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.5rem 1rem;
  background: var(--violet-50);
  color: var(--violet-700);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--violet-200);
  transition: all 0.2s;
}
.pack-card .btn-sm:hover { background: var(--violet-100); }

.packs-all { text-align: center; margin-top: 2.5rem; }

/* ===== PROOF / CHIFFRES ===== */

.proof-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 3.5rem;
}
.proof-stat { text-align: center; }
.proof-stat-value {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--violet-600);
  line-height: 1;
}
.proof-stat-label {
  font-size: 0.9rem;
  color: var(--slate-500);
  margin-top: 0.3rem;
}

.proof-testimonials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.testimonial {
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
  padding: 2rem;
}
.testimonial blockquote {
  font-size: 1rem;
  color: var(--slate-700);
  line-height: 1.6;
  margin-bottom: 1rem;
  font-style: italic;
}
.testimonial cite {
  font-style: normal;
  font-size: 0.88rem;
  color: var(--slate-500);
  font-weight: 600;
}

/* ===== TRUST / SECURITE ===== */

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.trust-item {
  text-align: center;
  padding: 2rem 1rem;
  background: #fff;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius);
}
.trust-item-icon {
  width: 48px; height: 48px;
  margin: 0 auto 1rem;
  background: var(--violet-100);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
}
.trust-item h4 { font-size: 0.95rem; font-weight: 700; color: var(--slate-900); margin-bottom: 0.3rem; }
.trust-item p { font-size: 0.82rem; color: var(--slate-500); }

/* ===== PRICING ===== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: start;
}
.pricing-card {
  background: #fff;
  border: 2px solid var(--slate-200);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  position: relative;
  transition: all 0.25s;
}
.pricing-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.pricing-card.popular {
  border-color: var(--violet-500);
  box-shadow: 0 0 0 1px var(--violet-500), var(--shadow-lg);
}
.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--violet-600);
  color: #fff;
  padding: 0.3rem 1.2rem;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}
.pricing-card h3 { font-size: 1.3rem; font-weight: 700; color: var(--slate-900); margin-bottom: 0.3rem; }
.pricing-card .pricing-desc { font-size: 0.88rem; color: var(--slate-500); margin-bottom: 1.2rem; }
.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 0.3rem;
}
.pricing-price .amount { font-size: 2.8rem; font-weight: 800; color: var(--slate-900); }
.pricing-price .period { font-size: 0.95rem; color: var(--slate-500); }
.pricing-note { font-size: 0.8rem; color: var(--slate-500); margin-bottom: 1.5rem; }

.pricing-features { list-style: none; margin-bottom: 2rem; }
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: var(--slate-700);
}
.pricing-features li::before {
  content: '✓';
  color: var(--violet-600);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn-primary,
.pricing-card .btn-secondary { width: 100%; justify-content: center; }

.pricing-options {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.88rem;
  color: var(--slate-500);
}

/* ===== FAQ ===== */

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--slate-200);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.3rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--slate-800);
  text-align: left;
}
.faq-question:hover { color: var(--violet-700); }
.faq-chevron {
  width: 20px; height: 20px;
  stroke: var(--slate-400);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}
.faq-answer-inner {
  padding: 0 0 1.3rem;
  font-size: 0.95rem;
  color: var(--slate-600);
  line-height: 1.7;
}

/* ===== CTA FINAL ===== */

.cta-final {
  background: linear-gradient(135deg, var(--violet-700), var(--violet-900));
  border-radius: 20px;
  padding: 4rem 2rem;
  text-align: center;
  color: #fff;
  max-width: var(--max-w);
  margin: 0 auto 4rem;
}
.cta-final h2 { font-size: 2rem; font-weight: 800; margin-bottom: 0.8rem; }
.cta-final p { font-size: 1.1rem; opacity: 0.85; margin-bottom: 2rem; max-width: 520px; margin-left: auto; margin-right: auto; }
.cta-final .btn-primary { background: #fff; color: var(--violet-700); }
.cta-final .btn-primary:hover { background: var(--slate-100); color: var(--violet-800); box-shadow: 0 6px 20px rgba(0,0,0,0.2); }

/* ===== FOOTER ===== */

.site-footer {
  background: var(--slate-900);
  color: var(--slate-300);
  padding: 4rem 1.5rem 2rem;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p { font-size: 0.88rem; color: var(--slate-400); margin-top: 1rem; line-height: 1.6; }
.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.4rem 0.8rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--slate-300);
}

.footer-col h5 {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--slate-200);
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a { color: var(--slate-400); font-size: 0.88rem; transition: color 0.2s; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--slate-500);
}

/* ===== ANIMATIONS ===== */

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.count-up { display: inline-block; }

/* ===== RESPONSIVE ===== */

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero h1 { font-size: 2.2rem; }
  .hero-visual { max-width: 480px; margin: 0 auto; }
  .steps-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .experts-grid { grid-template-columns: repeat(2, 1fr); }
  .experts-grid .expert-card:last-child { grid-column: 1 / -1; max-width: 300px; margin: 0 auto; }
  .packs-scroll { grid-template-columns: 1fr 1fr; }
  .proof-stats { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .proof-testimonials { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  section { padding: 3rem 1rem; }
  .hero { padding: 4rem 1rem 3rem; }
  .hero h1 { font-size: 1.8rem; }
  .section-title { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary { width: 100%; justify-content: center; }
  .experts-grid { grid-template-columns: 1fr; }
  .experts-grid .expert-card:last-child { max-width: 100%; }
  .packs-scroll { grid-template-columns: 1fr; }
  .proof-stats { grid-template-columns: 1fr 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  .nav-links { display: none; }
  .nav-mobile-btn { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--slate-200);
    padding: 1rem 1.5rem;
    gap: 0.8rem;
    box-shadow: var(--shadow-md);
  }
}