/* ─── Variables & reset ─── */
:root {
  --blue: #0a6cff;
  --blue-dark: #0850c4;
  --navy: #0b1f3a;
  --ink: #14253b;
  --muted: #5a6b80;
  --bg: #f5f8fc;
  --white: #ffffff;
  --green: #25d366;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(11, 31, 58, 0.08);
  --shadow-lg: 0 16px 50px rgba(11, 31, 58, 0.15);
  --max: 1140px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ─── Boutons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  text-align: center;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--blue); color: #fff; box-shadow: 0 6px 18px rgba(10,108,255,.35); }
.btn-primary:hover { background: var(--blue-dark); }
.btn-outline { background: #fff; color: var(--blue); border-color: var(--blue); }
.btn-block { width: 100%; padding: 16px; font-size: 1.05rem; }

/* ─── Header ─── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e6edf6;
}
.header-inner { display: flex; align-items: center; gap: 20px; height: 68px; }
.logo {
  font-size: 1.5rem; font-weight: 800; color: var(--navy);
  letter-spacing: -.5px;
}
.logo span { color: var(--blue); }
.main-nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.main-nav a { color: var(--ink); font-weight: 600; font-size: .96rem; }
.main-nav a:hover { color: var(--blue); }
.nav-cta {
  background: var(--blue); color: #fff !important;
  padding: 9px 18px; border-radius: 999px;
}
.nav-cta:hover { background: var(--blue-dark); }
.header-phone { font-weight: 700; color: var(--navy); white-space: nowrap; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.burger span { width: 26px; height: 3px; background: var(--navy); border-radius: 2px; }

/* ─── Hero ─── */
.hero {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(10,108,255,.18), transparent),
    linear-gradient(160deg, #0b1f3a 0%, #123a6b 100%);
  color: #fff; padding: 70px 0 80px;
}
.hero-inner { display: grid; grid-template-columns: 1.2fr .8fr; gap: 50px; align-items: center; }
.badge {
  display: inline-block; background: rgba(37,211,102,.18); color: #7dffb0;
  padding: 6px 14px; border-radius: 999px; font-weight: 700; font-size: .85rem;
  margin-bottom: 18px; border: 1px solid rgba(37,211,102,.4);
}
.hero h1 { font-size: 2.7rem; line-height: 1.12; letter-spacing: -1px; }
.hero-sub { font-size: 1.12rem; color: #cdd9ea; margin: 18px 0 28px; max-width: 540px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust { list-style: none; display: flex; gap: 22px; flex-wrap: wrap; margin-top: 28px; color: #cdd9ea; font-weight: 600; font-size: .95rem; }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat {
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius); padding: 22px; text-align: center;
}
.stat strong { display: block; font-size: 2rem; color: #fff; }
.stat span { color: #b9c8dd; font-size: .9rem; }

/* ─── Audiences ─── */
.audiences {
  display: grid; grid-template-columns: 1fr 1fr; gap: 26px;
  margin: -50px auto 70px; position: relative; z-index: 5;
}
.audience-card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 34px; border-top: 4px solid var(--blue);
}
.audience-icon { font-size: 2.4rem; margin-bottom: 8px; }
.audience-card h2 { font-size: 1.5rem; color: var(--navy); margin-bottom: 12px; }
.audience-card p { color: var(--muted); margin-bottom: 18px; }
.check-list { list-style: none; margin-bottom: 24px; }
.check-list li { padding-left: 28px; position: relative; margin-bottom: 9px; color: var(--ink); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 800; }

/* ─── Sections génériques ─── */
.section-title { font-size: 2rem; color: var(--navy); text-align: center; letter-spacing: -.5px; }
.section-lead { text-align: center; color: var(--muted); max-width: 620px; margin: 12px auto 40px; }
.services, .brands, .cert, .devis-section { padding: 70px 0; }
.brands { background: #fff; }

/* ─── Services ─── */
.grid-services { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.service {
  background: #fff; border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease;
  border: 1px solid #eef3fa;
}
.service:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-icon { font-size: 2rem; margin-bottom: 12px; }
.service h3 { color: var(--navy); margin-bottom: 8px; font-size: 1.18rem; }
.service p { color: var(--muted); font-size: .96rem; }

/* ─── Marques ─── */
.brand-list {
  list-style: none; display: flex; justify-content: center; gap: 40px; flex-wrap: wrap;
}
.brand-list li {
  font-size: 1.6rem; font-weight: 800; color: var(--navy);
  padding: 18px 36px; background: var(--bg); border-radius: var(--radius);
  border: 1px solid #e6edf6;
}

/* ─── Certification ─── */
.cert { background: linear-gradient(160deg, #0b1f3a, #123a6b); color: #fff; }
.cert-inner { display: flex; align-items: center; gap: 36px; }
.cert-badge {
  flex: 0 0 auto; width: 130px; height: 130px; border-radius: 50%;
  background: var(--green); color: #06371b; display: flex; align-items: center;
  justify-content: center; text-align: center; font-weight: 800; font-size: 1.25rem;
  box-shadow: 0 0 0 8px rgba(37,211,102,.25);
}
.cert h2 { font-size: 1.7rem; margin-bottom: 10px; }
.cert p { color: #cdd9ea; max-width: 720px; }

/* ─── Formulaire devis ─── */
.devis-section { background: var(--bg); }
.devis-form {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 34px; max-width: 760px; margin: 0 auto;
}
.devis-form fieldset { border: 0; margin-bottom: 26px; }
.devis-form legend {
  font-weight: 700; color: var(--navy); font-size: 1.1rem; margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.step {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%; background: var(--blue);
  color: #fff; font-size: .9rem; flex: 0 0 auto;
}
.options { display: flex; gap: 12px; flex-wrap: wrap; }
.options label {
  position: relative; cursor: pointer; flex: 1 1 auto; min-width: 130px;
}
.options input { position: absolute; opacity: 0; }
.options span {
  display: block; text-align: center; padding: 12px 16px; border-radius: 10px;
  border: 2px solid #dce6f2; font-weight: 600; color: var(--ink);
  transition: all .15s ease; background: #fbfdff;
}
.options label:hover span { border-color: var(--blue); }
.options input:checked + span {
  border-color: var(--blue); background: var(--blue); color: #fff;
}
.options input:focus-visible + span { outline: 2px solid var(--blue-dark); outline-offset: 2px; }

.grid-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-full { grid-column: 1 / -1; }
.field span { font-weight: 600; font-size: .92rem; color: var(--ink); }
.field input, .field textarea {
  padding: 12px 14px; border: 2px solid #dce6f2; border-radius: 10px;
  font: inherit; background: #fbfdff; transition: border-color .15s ease;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); }
.field input.invalid, .field textarea.invalid { border-color: #e0354b; background: #fff5f6; }

.form-error { color: #e0354b; font-weight: 600; margin-bottom: 14px; }
.form-note { text-align: center; color: var(--muted); font-size: .88rem; margin-top: 12px; }
.form-success {
  margin-top: 20px; background: #e8fbef; border: 1px solid var(--green);
  color: #06371b; padding: 30px 24px; border-radius: 14px; text-align: center;
}
.form-success .success-icon { font-size: 2.6rem; line-height: 1; margin-bottom: 8px; }
.form-success h3 { font-size: 1.5rem; color: #06371b; margin-bottom: 10px; }
.form-success p { color: #1c5236; margin: 0 auto 6px; max-width: 460px; }
.success-wa-hint { margin-top: 16px !important; font-weight: 600; }
.btn-wa-confirm {
  display: inline-flex; align-items: center; gap: 10px; margin-top: 16px;
  background: var(--green); color: #fff; font-weight: 700; font-size: 1.05rem;
  padding: 15px 28px; border-radius: 999px; text-decoration: none;
  box-shadow: 0 8px 22px rgba(37,211,102,.45); transition: transform .15s ease;
}
.btn-wa-confirm:hover { transform: translateY(-2px); color: #fff; }

/* ─── Footer ─── */
.site-footer { background: var(--navy); color: #cdd9ea; padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
.footer-logo { color: #fff; margin-bottom: 12px; }
.site-footer h3 { color: #fff; font-size: 1.05rem; margin: 14px 0 8px; }
.site-footer a { color: #9fc2ff; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 18px;
  font-size: .9rem;
}

/* ─── WhatsApp flottant ─── */
.whatsapp-float {
  position: fixed; bottom: 22px; right: 22px; z-index: 60;
  background: var(--green); color: #fff; display: flex; align-items: center;
  gap: 10px; padding: 12px 18px 12px 14px; border-radius: 999px;
  box-shadow: 0 8px 24px rgba(37,211,102,.5); font-weight: 700;
  transition: transform .15s ease;
}
.whatsapp-float:hover { transform: scale(1.05); color: #fff; }

/* ─── Responsive ─── */
@media (max-width: 920px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-services { grid-template-columns: 1fr 1fr; }
  .audiences { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .main-nav { display: none; }
  .main-nav.open {
    display: flex; flex-direction: column; position: absolute; top: 68px;
    left: 0; right: 0; background: #fff; padding: 16px 20px; gap: 14px;
    border-bottom: 1px solid #e6edf6; box-shadow: var(--shadow);
  }
  .header-phone { display: none; }
  .burger { display: flex; margin-left: auto; }
  .hero h1 { font-size: 2rem; }
  .grid-services { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cert-inner { flex-direction: column; text-align: center; }
  .grid-fields { grid-template-columns: 1fr; }
  .whatsapp-float span { display: none; }
}