/* ===================================================
   Z'EXPERT — Design System v2 · Mode Clair
   Montserrat (titres) · Lato (corps)
   Turquoise #109DBB · Jaune #F4D44D · Fond #F7F7F7
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800&family=Lato:ital,wght@0,300;0,400;0,700;1,400&family=Playfair+Display:wght@600&display=swap');

:root {
  --primary:        #109DBB;
  --primary-dk:     #0B88A1;
  --primary-lt:     #E8F5F8;
  --primary-yellow: #F4D44D;
  --accent:         var(--primary-yellow);
  --accent-dk:      #D4B930;
  --accent-lt:      #FFFBEA;

  --bg:          #F7F7F7;
  --bg-alt:      #FFFFFF;
  --surface:     #FFFFFF;

  --text:        #1F1F1F;
  --text-sec:    #5E5E5E;
  --text-light:  #8A8A8A;

  --border:      #EAEAEA;
  --border-dk:   #D0D0D0;

  --font-title:  'Montserrat', system-ui, sans-serif;
  --font-body:   'Lato', system-ui, sans-serif;

  --radius:      12px;
  --radius-sm:   8px;
  --radius-lg:   20px;
  --shadow:      0 10px 30px rgba(0,0,0,0.05);
  --shadow-md:   0 12px 40px rgba(0,0,0,0.09);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.13);
  --max-w:       1140px;
  --nav-h:       96px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Typographie ── */
h1, h2, h3, h4 { font-family: var(--font-title); color: var(--text); }
h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.01em; }
h3 { font-size: 1.1rem; font-weight: 700; line-height: 1.3; }
p  { line-height: 1.75; color: var(--text-sec); }
em { color: var(--primary); font-style: normal; }
strong { color: var(--text); font-weight: 700; }

/* ── Layout ── */
.container  { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }
.section    { padding: 96px 0; }
.section-sm { padding: 68px 0; }
.text-center { text-align: center; }

/* ── En-têtes de section ── */
.section-label {
  display: inline-block; font-family: var(--font-title);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--primary); margin-bottom: 12px;
}
.divider-accent {
  width: 40px; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px; margin: 12px 0 24px;
}
.divider-accent.center { margin-left: auto; margin-right: auto; }
.section-subtitle { color: var(--text-sec); font-size: 1.05rem; line-height: 1.75; max-width: 560px; }
.section-subtitle.center { margin: 0 auto; text-align: center; }
.hr-fade { border: none; height: 1px; background: var(--border); }

/* ── Navigation ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(247,247,247,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.35s, height 0.38s cubic-bezier(0.4,0,0.2,1), background 0.3s, border-color 0.3s;
}
.nav.scrolled {
  height: 68px;
  background: rgba(255,255,255,0.80);
  box-shadow: 0 4px 20px rgba(0,0,0,0.06), 0 1px 0 rgba(16,157,187,0.10);
  border-bottom-color: rgba(16,157,187,0.13);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 32px;
  height: 100%; display: flex; align-items: center;
}
.nav-logo img { height: 52px; width: auto; transition: height 0.38s cubic-bezier(0.4,0,0.2,1); }
.nav.scrolled .nav-logo img { height: 42px; }
.nav-menu { display: flex; align-items: center; gap: 2px; margin: 0 auto; }
.nav-link {
  font-family: var(--font-title); font-size: 0.84rem; font-weight: 600;
  color: var(--text-sec); text-decoration: none;
  padding: 8px 16px; border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--primary); background: var(--primary-lt); }
.nav-cta {
  flex-shrink: 0; margin-left: 20px;
  background: var(--primary); color: #FFFFFF;
  padding: 10px 24px; border-radius: var(--radius-sm);
  font-family: var(--font-title); font-size: 0.84rem; font-weight: 700;
  text-decoration: none; white-space: nowrap;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(16,157,187,0.3);
}
.nav-cta:hover { background: var(--primary-dk); transform: translateY(-1px); box-shadow: 0 6px 24px rgba(16,157,187,0.4); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; margin-left: auto; }
.hamburger span { width: 22px; height: 2px; background: var(--text-sec); border-radius: 2px; transition: all 0.3s; }
.mobile-menu {
  display: none; position: fixed; inset: 0;
  background: rgba(247,247,247,0.98); backdrop-filter: blur(16px);
  z-index: 99; flex-direction: column; align-items: center; justify-content: center; gap: 24px;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { font-size: 1.3rem; color: var(--text); }

/* ── Boutons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--radius-sm);
  font-family: var(--font-title); font-size: 0.9rem; font-weight: 700;
  text-decoration: none; cursor: pointer; border: none;
  transition: background 0.25s cubic-bezier(0.4,0,0.2,1), transform 0.25s cubic-bezier(0.4,0,0.2,1), box-shadow 0.25s cubic-bezier(0.4,0,0.2,1), color 0.25s; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #FFFFFF; box-shadow: 0 4px 16px rgba(16,157,187,0.28); }
.btn-primary:hover { background: var(--primary-dk); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(16,157,187,0.4); }
.btn-accent { background: var(--primary-yellow); color: var(--text); box-shadow: 0 4px 16px rgba(244,212,77,0.3), 0 10px 30px rgba(244,212,77,0.18); }
.btn-accent:hover { background: var(--primary-yellow); color: var(--text); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(244,212,77,0.45), 0 14px 40px rgba(244,212,77,0.22); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary-lt); transform: translateY(-2px); }
.btn-outline-white { background: transparent; color: #FFFFFF; border: 2px solid rgba(255,255,255,0.6); }
.btn-outline-white:hover { background: rgba(255,255,255,0.15); border-color: #FFFFFF; transform: translateY(-2px); }
.btn-lg { padding: 16px 36px; font-size: 1rem; }

/* ── Card de base ── */
.card {
  background: var(--surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); padding: 32px;
  border: 1px solid var(--border);
  transition: box-shadow 0.28s cubic-bezier(0.4,0,0.2,1), transform 0.28s cubic-bezier(0.4,0,0.2,1), border-color 0.28s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

/* ── Scroll Fade ── */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.65s ease, transform 0.65s ease; }
.fade-in.visible { opacity: 1; transform: none; }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ── Footer ── */
.footer { background: linear-gradient(155deg, #0b8fab 0%, var(--primary) 45%, #0c97b8 100%); position: relative; overflow: hidden; padding: 0; border-top: 3px solid var(--accent); }
.footer-glow { position: absolute; top: -180px; right: -60px; width: 580px; height: 580px; background: radial-gradient(circle, rgba(244,212,77,0.09) 0%, transparent 55%); pointer-events: none; z-index: 0; }
.footer .container { position: relative; z-index: 1; max-width: min(1240px, calc(100vw - 48px)); }

/* Visuel décoratif en fond à gauche */
.footer-bg-visual { position: absolute; top: 0; left: -20px; bottom: 0; width: 360px; pointer-events: none; z-index: 0; }
.footer-bg-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center right; display: block; opacity: 0.11; -webkit-mask-image: linear-gradient(to right, transparent 0%, black 45%, transparent 100%); mask-image: linear-gradient(to right, transparent 0%, black 45%, transparent 100%); }

/* Layout principal */
.footer-inner { padding: 36px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1.15fr 0.9fr 1.2fr; gap: 24px 36px; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,0.10); }

/* Colonne marque */
.footer-logo { height: 30px; width: auto; display: block; margin-bottom: 12px; }
.footer-desc { color: rgba(255,255,255,0.72); font-size: 0.80rem; line-height: 1.6; max-width: 210px; margin: 0 0 16px; }

/* Icônes réseaux sociaux */
.footer-socials { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-social-link { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 8px; background: rgba(255,255,255,0.09); border: 1px solid rgba(255,255,255,0.14); color: rgba(255,255,255,0.78); text-decoration: none; transition: background 0.22s, border-color 0.22s, color 0.22s, transform 0.18s; flex-shrink: 0; }
.footer-social-link:hover { background: rgba(244,212,77,0.18); border-color: rgba(244,212,77,0.45); color: var(--accent); transform: translateY(-2px); }
.footer-social-link svg { width: 14px; height: 14px; display: block; }

/* Titres colonnes */
.footer-col-title { color: #fff; font-family: var(--font-title); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid rgba(255,255,255,0.12); }

/* Liens navigation */
.footer-link { display: block; color: rgba(255,255,255,0.58); font-size: 0.80rem; text-decoration: none; margin-bottom: 5px; transition: color 0.2s, transform 0.18s; }
.footer-link:hover { color: var(--accent); transform: translateX(4px); }

/* Colonne contact */
.footer-contact-item { display: flex; align-items: center; gap: 8px; color: rgba(255,255,255,0.60); font-size: 0.79rem; text-decoration: none; margin-bottom: 7px; transition: color 0.2s; white-space: nowrap; overflow: hidden; max-width: 100%; }
.footer-contact-item:hover { color: var(--accent); }
.footer-contact-item svg { width: 13px; height: 13px; flex-shrink: 0; opacity: 0.72; }
.footer-contact-item span { overflow: hidden; text-overflow: ellipsis; min-width: 0; }

/* Barre basse */
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; padding: 12px 0; }
.footer-bottom-text { font-size: 0.67rem; color: rgba(255,255,255,0.38); line-height: 1.55; }
.footer-bottom-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; flex-shrink: 0; }
.footer-bottom-link { font-size: 0.67rem; color: rgba(255,255,255,0.44); text-decoration: none; transition: color 0.2s; }
.footer-bottom-link:hover { color: rgba(255,255,255,0.78); }

/* ── Accordion ── */
.accordion-item { border-bottom: 1px solid var(--border); }
.accordion-btn {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; background: none; border: none; cursor: pointer;
  font-family: var(--font-title); font-size: 0.93rem; font-weight: 600;
  color: var(--text); text-align: left; gap: 16px;
}
.accordion-icon {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary-lt); color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1), background 0.2s, color 0.2s;
  will-change: transform;
}
.accordion-item.open .accordion-icon { transform: rotate(45deg); background: var(--primary); color: #FFFFFF; }
.accordion-body { display: none; padding-bottom: 20px; color: var(--text-sec); line-height: 1.75; }
.accordion-item.open .accordion-body { display: block; }

/* ── Responsive ── */
@media (max-width: 980px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; gap: 20px 24px; }
  .footer-col--contact { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 4px 24px; align-items: flex-start; }
  .footer-col--contact .footer-col-title { width: 100%; margin-bottom: 8px; }
  .footer-col--contact .footer-contact-item { margin-bottom: 0; }
  .footer-bg-visual { width: 220px; }
}
@media (max-width: 768px) {
  .nav-menu, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .nav { height: 72px; }
  .nav.scrolled { height: 64px; }
  .nav-logo img { height: 38px; }
  .nav.scrolled .nav-logo img { height: 32px; }
  .container { padding: 0 20px; }
  .section { padding: 72px 0; }
  .section-sm { padding: 52px 0; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.55rem; }
  .btn-lg { padding: 14px 28px; font-size: 0.95rem; }
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-col--brand { grid-column: 1 / -1; }
  .footer-desc { max-width: none; }
  .footer-bg-visual { display: none; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
  .footer-bottom-right { gap: 10px; }
}
@media (max-width: 400px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col--contact { display: block !important; }
  .footer-bottom-right { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* ── Divider animé ── */
.divider-accent.fade-in {
  opacity: 0; transform: scaleX(0); transform-origin: left;
  transition: transform 0.75s 0.22s cubic-bezier(0.4,0,0.2,1), opacity 0.5s ease;
}
.divider-accent.center.fade-in { transform-origin: center; }
.divider-accent.fade-in.visible { transform: scaleX(1); opacity: 1; }

/* ── Section Confiance ── */
.confiance-section { background: var(--bg-alt); }
.confiance-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.confiance-bloc {
  text-align: center; padding: 40px 28px 36px;
  background: var(--surface); border-radius: var(--radius-lg);
  border: 1px solid var(--border); box-shadow: var(--shadow);
  position: relative; overflow: hidden;
  transition: box-shadow 0.28s cubic-bezier(0.4,0,0.2,1), transform 0.28s cubic-bezier(0.4,0,0.2,1), border-color 0.28s;
}
.confiance-bloc::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0); transform-origin: left; transition: transform 0.42s cubic-bezier(0.4,0,0.2,1);
}
.confiance-bloc:hover { box-shadow: var(--shadow-md), 0 8px 40px rgba(16,157,187,0.09), 0 4px 20px rgba(244,212,77,0.06); transform: translateY(-5px); border-color: rgba(16,157,187,0.18); }
.confiance-bloc:hover::before { transform: scaleX(1); }
.confiance-icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: var(--primary-lt); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px;
  transition: background 0.3s;
}
.confiance-bloc:hover .confiance-icon { background: var(--primary); }
.confiance-icon svg { width: 24px; height: 24px; color: var(--primary); transition: color 0.3s; }
.confiance-bloc:hover .confiance-icon svg { color: #FFFFFF; }
.confiance-num {
  font-family: var(--font-title); font-size: 2.8rem; font-weight: 800;
  color: var(--primary); line-height: 1; margin-bottom: 8px; letter-spacing: -0.02em;
}
.confiance-titre {
  font-family: var(--font-title); font-size: 0.92rem; font-weight: 700;
  color: var(--text); margin-bottom: 12px; letter-spacing: 0.01em;
}
.confiance-bloc p { font-size: 0.875rem; color: var(--text-sec); line-height: 1.68; margin: 0; }

/* ── Tunnel premium border ── */
.tunnel-premium-section .tunnel-card {
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(244,212,77,0.14), 0 0 60px rgba(244,212,77,0.04);
  border-color: rgba(244,212,77,0.18);
}

/* ── Responsive confiance ── */
@media (max-width: 900px) { .confiance-grid { grid-template-columns: 1fr; gap: 16px; } }
@media (max-width: 768px) {
  .confiance-bloc { padding: 28px 22px 24px; }
  .confiance-num { font-size: 2.2rem; }
}