/* GM Étanchéité — feuille de style unique */
:root {
  --navy: #0e2a3f;
  --navy-2: #163b57;
  --blue: #1f78c1;
  --blue-light: #3ba3e8;
  --ink: #1b2730;
  --muted: #4a6274;
  --line: #dfe5ea;
  --bg: #ffffff;
  --bg-soft: #f4f6f8;
  --radius: 14px;
  --wrap: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.6; font-size: 17px; -webkit-font-smoothing: antialiased; }
img, svg { max-width: 100%; display: block; }
a { color: var(--blue); }
h1, h2, h3 { color: var(--navy); line-height: 1.2; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.25rem); font-weight: 800; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section__head { max-width: 680px; margin-bottom: 48px; }
.eyebrow { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--blue); margin-bottom: 10px; }
.lead { font-size: 1.15rem; color: var(--muted); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; z-index: 100; background: #fff; padding: 8px 12px; }

/* Boutons */
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 24px; border-radius: 999px; font-weight: 700; text-decoration: none; border: 2px solid transparent; cursor: pointer; font-size: 1rem; font-family: inherit; transition: background .15s, color .15s, border-color .15s; }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: #17629f; }
.btn--ghost { border-color: rgba(255,255,255,.55); color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,.1); }
.btn--outline { border-color: var(--navy); color: var(--navy); }
.btn--outline:hover { background: var(--navy); color: #fff; }
.btn svg { width: 20px; height: 20px; flex: none; }

/* En-tête */
.header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.96); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.header__logo img { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: .95rem; }
.nav a:hover { color: var(--blue); }
.nav .btn { padding: 10px 18px; color: #fff; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--navy); }
.nav-toggle svg { width: 28px; height: 28px; }

/* Héros */
.hero { position: relative; background: var(--navy); color: #fff; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: auto -10% -1px -10%; height: 120px; background: linear-gradient(180deg, transparent, rgba(59,163,232,.18)); pointer-events: none; }
.hero__inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: center; padding: 96px 20px 104px; }
.hero h1 { color: #fff; }
.hero h1 span { color: var(--blue-light); }
.hero .lead { color: #c9d7e2; max-width: 560px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 36px; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 10px 26px; padding: 0; margin: 0; list-style: none; font-size: .95rem; color: #dbe6ee; }
.hero__trust li { display: flex; align-items: center; gap: 8px; }
.hero__trust svg { width: 18px; height: 18px; color: var(--blue-light); }
.hero__visual { position: relative; }
.hero__visual svg { width: 100%; height: auto; }

/* Services */
.grid { display: grid; gap: 24px; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; display: flex; flex-direction: column; }
.card__icon { width: 52px; height: 52px; border-radius: 12px; background: #e8f2fb; color: var(--blue); display: grid; place-items: center; margin-bottom: 20px; }
.card__icon svg { width: 28px; height: 28px; }
.card p { color: var(--muted); font-size: .97rem; }
.card ul { margin: auto 0 0; padding: 16px 0 0; list-style: none; border-top: 1px solid var(--line); font-size: .92rem; color: var(--ink); }
.card li { padding: 3px 0 3px 18px; position: relative; }
.card li::before { content: ""; position: absolute; left: 0; top: .72em; width: 7px; height: 7px; border-radius: 50%; background: var(--blue-light); }
.extra { margin-top: 32px; color: var(--muted); font-size: .97rem; }

/* Méthode */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: step; position: relative; padding-top: 64px; }
.steps li::before { content: counter(step, decimal-leading-zero); position: absolute; top: 0; left: 0; font-size: 2.4rem; font-weight: 800; color: var(--blue); line-height: 1; }
.steps p { color: var(--muted); font-size: .97rem; }

/* Pourquoi nous */
.why { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 18px; }
.checks li { display: grid; grid-template-columns: 28px 1fr; gap: 14px; }
.checks svg { width: 28px; height: 28px; color: var(--blue); }
.checks strong { display: block; color: var(--navy); }
.checks span { color: var(--muted); font-size: .97rem; }
.stat-panel { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 40px; display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.stat-panel b { display: block; font-size: 2.2rem; font-weight: 800; color: var(--blue-light); line-height: 1.1; }
.stat-panel span { color: #c9d7e2; font-size: .95rem; }

/* Zone */
.zone { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.depts { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0 0 28px; list-style: none; }
.depts li { background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: .92rem; font-weight: 600; color: var(--navy); }
.depts li.is-main { background: var(--navy); border-color: var(--navy); color: #fff; }
.cities { columns: 2; column-gap: 24px; padding: 0; margin: 0; list-style: none; color: var(--muted); font-size: .97rem; }
.cities li { padding: 2px 0; break-inside: avoid; }

/* FAQ */
.faq { max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--navy); font-size: 1.07rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.5rem; line-height: 1; color: var(--blue); flex: none; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 12px 0 0; color: var(--muted); }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; }
.contact__info { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 18px; }
.contact__info li { display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: center; }
.contact__info .ico { width: 44px; height: 44px; border-radius: 10px; background: #e8f2fb; color: var(--blue); display: grid; place-items: center; }
.contact__info .ico svg { width: 22px; height: 22px; }
.contact__info a { color: var(--navy); font-weight: 700; text-decoration: none; font-size: 1.1rem; }
.contact__info small { display: block; color: var(--muted); }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; display: grid; gap: 16px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: .92rem; color: var(--navy); }
.form input, .form select, .form textarea { font: inherit; font-size: 1rem; padding: 12px 14px; border: 1px solid #c5d0d9; border-radius: 10px; background: #fff; color: var(--ink); width: 100%; }
.form input:focus, .form select:focus, .form textarea:focus { outline: 3px solid rgba(31,120,193,.25); border-color: var(--blue); }
.form textarea { min-height: 130px; resize: vertical; }
.form small { color: var(--muted); font-size: .82rem; }

/* Pied de page */
.footer { background: var(--navy); color: #c9d7e2; padding: 64px 0 32px; font-size: .95rem; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.12); }
.footer img { height: 48px; width: auto; margin-bottom: 16px; }
.footer h3 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.footer a { color: #fff; text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer__legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 24px; font-size: .85rem; color: #93a9ba; }

/* Bouton d'appel mobile */
.callbar { display: none; }

/* Page légale */
.legal { max-width: 780px; padding: 64px 20px 96px; }
.legal h2 { font-size: 1.3rem; margin-top: 2em; }

/* Responsive */
@media (max-width: 980px) {
  .grid--4, .steps { grid-template-columns: repeat(2, 1fr); }
  .hero__inner, .why, .zone, .contact { grid-template-columns: 1fr; }
  .hero__visual { max-width: 460px; }
}
@media (max-width: 760px) {
  body { font-size: 16px; padding-bottom: 68px; }
  .section { padding: 64px 0; }
  .header__logo img { height: 38px; }
  .nav-toggle { display: block; }
  .nav { position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 20px; border-bottom: 1px solid var(--line); display: none; }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 12px; justify-content: center; border: 0; }
  .hero__inner { padding: 64px 20px 72px; gap: 40px; }
  .hero__visual { display: none; }
  .grid--4, .grid--2, .steps, .form__row, .footer__grid { grid-template-columns: 1fr; }
  .stat-panel { padding: 28px; }
  .cities { columns: 2; }
  .form { padding: 22px; }
  .callbar { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60; gap: 10px; padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -4px 18px rgba(14,42,63,.08); }
  .callbar .btn { flex: 1; justify-content: center; padding: 12px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }