/* ==========================================================
   LANDING PAGE — Tchatix.fr
   ========================================================== */

.landing-body { background: var(--blanc); overflow-x: hidden; }

.section-kicker {
  display: inline-block; font-size: 11.5px; font-weight: 800; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--bleu-primaire); background: var(--bleu-pale);
  padding: 5px 13px; border-radius: 30px; margin-bottom: 14px;
}
.section-kicker.light { background: rgba(255,255,255,0.15); color: #d9ecff; }

/* ---------- Navigation ---------- */
.lnav {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--bordure);
}
.lnav-inner {
  max-width: 1180px; margin: 0 auto; padding: 14px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.lnav-brand { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-weight: 600; font-size: 16.5px; }
.lnav-brand b { color: var(--bleu-primaire); }
.lnav-brand i { font-style: normal; color: var(--texte-doux); font-weight: 500; font-size: 12px; }
.lnav-links { display: flex; gap: 28px; }
.lnav-links a { color: var(--texte-doux); text-decoration: none; font-weight: 600; font-size: 13.5px; transition: color .15s; }
.lnav-links a:hover { color: var(--bleu-primaire); }
.lnav-actions { display: flex; align-items: center; gap: 10px; }
.btn-ghost-nav {
  color: var(--texte); text-decoration: none; font-weight: 600; font-size: 13.5px; padding: 9px 16px; border-radius: 10px;
  transition: background .15s;
}
.btn-ghost-nav:hover { background: var(--bleu-pale-2); }
.btn-primary-nav {
  color: #fff; text-decoration: none; font-weight: 700; font-size: 13.5px; padding: 10px 18px; border-radius: 10px;
  background: linear-gradient(135deg, var(--bleu-clair), var(--bleu-primaire));
  box-shadow: 0 4px 14px -4px rgba(46,125,224,0.5); transition: transform .12s;
}
.btn-primary-nav:hover { transform: translateY(-1px); }

@media (max-width: 860px) {
  .lnav-links { display: none; }
}
@media (max-width: 420px) {
  .lnav-inner { padding: 12px 16px; gap: 8px; }
  .btn-ghost-nav { display: none; }
  .lnav-brand span { font-size: 15px; }
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: 90px 28px 70px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(circle at 12% 8%, rgba(62,166,255,0.16), transparent 45%),
    radial-gradient(circle at 92% 22%, rgba(12,59,120,0.14), transparent 45%),
    radial-gradient(circle at 50% 100%, rgba(46,125,224,0.10), transparent 55%);
}
.hero-inner {
  max-width: 1180px; margin: 0 auto; position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 50px; align-items: center;
}

.hero-kicker {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 700;
  color: var(--bleu-nuit); background: var(--bleu-pale); border: 1px solid rgba(46,125,224,0.25);
  padding: 6px 14px; border-radius: 30px; margin-bottom: 18px;
}
.hero-copy h1 {
  font-family: var(--font-display); font-size: 48px; line-height: 1.12; font-weight: 700;
  letter-spacing: -0.02em; margin: 0 0 18px; color: var(--texte);
}
.hero-copy h1 span {
  background: linear-gradient(135deg, var(--bleu-primaire), var(--bleu-clair));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 16.5px; line-height: 1.6; color: var(--texte-doux); max-width: 520px; margin: 0 0 30px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.btn-lg { padding: 15px 26px !important; font-size: 15px !important; border-radius: 13px !important; }
.btn-secondary-lg {
  display: inline-flex; align-items: center; color: var(--texte); text-decoration: none; font-weight: 600;
  font-size: 15px; padding: 15px 22px; border-radius: 13px; border: 1.5px solid var(--bordure); transition: all .15s;
}
.btn-secondary-lg:hover { border-color: var(--bleu-primaire); color: var(--bleu-primaire); }

.hero-trust { display: flex; align-items: center; gap: 12px; }
.hero-avatars { display: flex; }
.hero-avatars span {
  width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 13px; border: 2px solid #fff; margin-left: -10px;
  box-shadow: 0 2px 6px rgba(12,59,120,0.2);
}
.hero-avatars span:first-child { margin-left: 0; }
.hero-trust span:last-child { font-size: 13px; color: var(--texte-doux); font-weight: 500; }

/* ---------- Mockup visuel du hero ---------- */
.hero-visual { position: relative; }
.mockup-window {
  background: var(--blanc); border-radius: 18px; box-shadow: 0 30px 70px -20px rgba(12,59,120,0.35);
  border: 1px solid var(--bordure); overflow: hidden; transform: rotate(1.2deg);
}
.mockup-topbar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: var(--bleu-pale-2); border-bottom: 1px solid var(--bordure); }
.mockup-topbar .dot { width: 9px; height: 9px; border-radius: 50%; }
.dot.red { background: #e0523b; } .dot.yellow { background: #e0a53b; } .dot.green { background: #2fb573; }
.mockup-url { margin-left: 10px; font-size: 11px; color: var(--texte-doux); background: var(--blanc); padding: 3px 10px; border-radius: 6px; }
.mockup-body { display: flex; height: 260px; }
.mockup-sidebar { width: 110px; background: var(--bleu-pale-2); padding: 12px 8px; display: flex; flex-direction: column; gap: 6px; border-right: 1px solid var(--bordure); }
.mockup-room { font-size: 10.5px; font-weight: 700; padding: 8px 8px; border-radius: 8px; color: var(--texte-doux); }
.mockup-room.active { background: var(--bleu-pale); color: var(--bleu-primaire); }
.mockup-main { flex: 1; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.mockup-voice-row { display: flex; gap: 10px; margin-bottom: 6px; }
.mockup-avatar {
  width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 14px; box-shadow: 0 2px 8px rgba(12,59,120,0.2);
}
.mockup-avatar.pulse { animation: speaking-pulse 1.1s ease-in-out infinite; }
.mockup-avatar.pulse2 { animation: speaking-pulse 1.1s ease-in-out infinite; animation-delay: .4s; }
.mockup-msg { display: flex; align-items: center; gap: 8px; }
.mockup-msg.own { justify-content: flex-end; }
.m-dot { width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0; }
.m-bar { height: 14px; border-radius: 8px; background: var(--bleu-pale-2); }
.m-bar.w70 { width: 70%; } .m-bar.w50 { width: 50%; } .m-bar.w85 { width: 85%; }
.mockup-msg.own .m-bar { background: var(--bleu-pale); }

.floating-card {
  position: absolute; background: var(--blanc); border-radius: 14px; padding: 10px 16px;
  box-shadow: 0 14px 30px -8px rgba(12,59,120,0.3); border: 1px solid var(--bordure);
  display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 700;
  animation: float-card 5s ease-in-out infinite;
}
.card-webcam { top: -14px; right: 10px; }
.card-distance { bottom: 10px; left: -20px; animation-delay: -2.5s; }
.fc-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }
.fc-dot.live { animation: speaking-pulse 1.4s ease-in-out infinite; background: var(--danger); }
@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: 36px; }
  .hero-visual { order: -1; max-width: 460px; margin: 0 auto; }
}

/* ---------- Bandeau stats ---------- */
.stat-strip { background: linear-gradient(135deg, var(--bleu-nuit), var(--bleu-primaire)); padding: 34px 28px; }
.stat-strip-inner {
  max-width: 1000px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center;
}
.stat-strip-inner strong { display: block; font-family: var(--font-display); font-size: 30px; font-weight: 700; color: #fff; }
.stat-strip-inner span { font-size: 12px; color: #cfe3ff; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
@media (max-width: 700px) { .stat-strip-inner { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Sections generiques ---------- */
.section-head { max-width: 640px; margin: 0 auto 46px; text-align: center; }
.section-head h2 { font-family: var(--font-display); font-size: 32px; margin: 0 0 12px; letter-spacing: -0.01em; }
.section-head p { color: var(--texte-doux); font-size: 15.5px; line-height: 1.6; margin: 0; }

/* ---------- Fonctionnalites ---------- */
.features { max-width: 1180px; margin: 0 auto; padding: 90px 28px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
  background: var(--blanc); border: 1px solid var(--bordure); border-radius: 18px; padding: 26px 22px;
  transition: transform .18s, box-shadow .18s, border-color .18s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 16px 34px -14px rgba(12,59,120,0.25); border-color: rgba(46,125,224,0.3); }
.feature-icon {
  width: 46px; height: 46px; border-radius: 13px; background: linear-gradient(135deg, var(--bleu-pale), var(--bleu-pale-2));
  display: flex; align-items: center; justify-content: center; font-size: 21px; margin-bottom: 16px;
}
.feature-card h3 { font-family: var(--font-display); font-size: 16.5px; margin: 0 0 8px; }
.feature-card p { font-size: 13.5px; color: var(--texte-doux); line-height: 1.55; margin: 0; }

@media (max-width: 980px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .feature-grid { grid-template-columns: 1fr; } }

/* ---------- Comment ca marche ---------- */
.how { background: var(--bleu-pale-2); padding: 90px 28px; }
.how-steps { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.how-step { position: relative; padding: 10px; }
.how-num {
  width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--bleu-clair), var(--bleu-primaire));
  color: #fff; display: flex; align-items: center; justify-content: center; font-family: var(--font-display);
  font-weight: 700; font-size: 16px; margin-bottom: 16px; box-shadow: 0 6px 16px -4px rgba(46,125,224,0.5);
}
.how-step h3 { font-family: var(--font-display); font-size: 16px; margin: 0 0 8px; }
.how-step p { font-size: 13.5px; color: var(--texte-doux); line-height: 1.55; margin: 0; }
@media (max-width: 860px) { .how-steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .how-steps { grid-template-columns: 1fr; } }

/* ---------- Securite ---------- */
.security { background: radial-gradient(circle at 15% 20%, var(--bleu-clair), var(--bleu-nuit) 65%); padding: 90px 28px; color: #fff; }
.security-inner { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 1fr 0.6fr; gap: 50px; align-items: center; }
.security-copy h2 { font-family: var(--font-display); font-size: 30px; margin: 0 0 22px; letter-spacing: -0.01em; }
.security-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.security-list li { display: flex; align-items: center; gap: 12px; font-size: 14.5px; font-weight: 500; opacity: 0.95; }
.security-list li b { font-size: 18px; }
.security-visual { display: flex; justify-content: center; }
.shield-badge {
  width: 200px; height: 200px; border-radius: 50%; background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25); display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; font-size: 52px; backdrop-filter: blur(6px);
}
.shield-badge span { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; opacity: 0.85; }
@media (max-width: 860px) { .security-inner { grid-template-columns: 1fr; text-align: center; } .security-list li { justify-content: center; } }

/* ---------- CTA final ---------- */
.cta-final { max-width: 700px; margin: 0 auto; padding: 100px 28px; text-align: center; }
.cta-final h2 { font-family: var(--font-display); font-size: 32px; margin: 0 0 14px; letter-spacing: -0.01em; }
.cta-final p { color: var(--texte-doux); font-size: 15.5px; margin: 0 0 28px; }

/* ---------- Footer ---------- */
.lfooter { border-top: 1px solid var(--bordure); padding: 28px; }
.lfooter-inner { max-width: 1180px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.lfooter-inner p { margin: 0; font-size: 12.5px; color: var(--texte-doux); }

/* ---------- Bouton "retour accueil" sur la page de connexion ---------- */
.back-home {
  position: fixed; top: 22px; left: 26px; z-index: 10; color: var(--texte-doux); text-decoration: none;
  font-size: 13px; font-weight: 600; background: rgba(255,255,255,0.7); backdrop-filter: blur(6px);
  padding: 8px 14px; border-radius: 30px; border: 1px solid var(--bordure); transition: color .15s;
}
.back-home:hover { color: var(--bleu-primaire); }