/* ==========================================================================
   DL Serrurerie — design system
   CSS pur, sans framework, pensé pour la performance (Core Web Vitals)
   ========================================================================== */

:root {
  --color-primary: #073b78;
  --color-primary-dark: #052a58;
  --color-accent: #e8a13a;
  --color-ink: #1b2430;
  --color-ink-soft: #4a5568;
  --color-bg: #ffffff;
  --color-bg-soft: #f4f7fb;
  --color-border: #e2e8f0;
  --color-success: #1b7a4d;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px -12px rgba(7, 59, 120, 0.25);
  --shadow-sm: 0 2px 10px rgba(7, 59, 120, 0.08);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5em; color: var(--color-primary); }
h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
ul { margin: 0 0 1em; padding-left: 1.2em; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* Skip link */
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--color-primary);
  color: #fff; padding: 10px 16px; z-index: 100; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* Top bar */
.topbar {
  background: var(--color-primary-dark);
  color: #fff;
  font-size: 0.85rem;
}
.topbar .container {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 8px; padding-bottom: 8px; gap: 12px; flex-wrap: wrap;
}
.topbar a { color: #fff; text-decoration: none; }
.topbar-badge { display: inline-flex; align-items: center; gap: 6px; }

/* Header / nav */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 50;
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px; gap: 16px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800; font-size: 1.15rem; color: var(--color-primary);
  text-decoration: none;
}
.logo-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  color: #fff; flex-shrink: 0;
}
.logo-city { font-weight: 500; color: var(--color-ink-soft); font-size: 0.85rem; display: block; }

nav.main-nav {
  display: flex; align-items: center; gap: 22px;
}
nav.main-nav a {
  text-decoration: none; color: var(--color-ink); font-weight: 600; font-size: 0.95rem;
}
nav.main-nav a:hover { color: var(--color-primary); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px; font-weight: 700;
  text-decoration: none; font-size: 0.95rem; border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--color-accent); color: #2a1a02; }
.btn-primary:hover { background: #d6902c; }
.btn-outline { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-block { width: 100%; justify-content: center; }
.header-cta { display: flex; align-items: center; gap: 10px; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: 56px 0 64px;
}
.hero .container { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero h1 { color: #fff; }
.hero .lead { font-size: 1.1rem; color: #e6edf7; max-width: 46ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.hero-trust { display: flex; gap: 22px; margin-top: 30px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: #e6edf7; }
.trust-item strong { color: #fff; }

.hero-card {
  background: #fff; color: var(--color-ink); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.hero-card h2 { font-size: 1.2rem; }
.hero-card .rating { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.stars { color: var(--color-accent); letter-spacing: 2px; }
.hero-card ul { list-style: none; padding: 0; margin: 0 0 18px; }
.hero-card ul li { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 8px; font-size: 0.92rem; }
.hero-card ul li svg { flex-shrink: 0; margin-top: 3px; color: var(--color-success); }

/* Sections */
section { padding: 56px 0; }
.section-alt { background: var(--color-bg-soft); }
.section-head { max-width: 62ch; margin-bottom: 32px; }
.section-head p { color: var(--color-ink-soft); }
.eyebrow {
  display: inline-block; text-transform: uppercase; letter-spacing: 0.06em;
  font-size: 0.78rem; font-weight: 800; color: var(--color-accent);
  margin-bottom: 10px;
}

/* Service grid */
.grid {
  display: grid; gap: 22px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
  height: 100%;
}
.card-icon {
  width: 46px; height: 46px; border-radius: 12px; background: var(--color-bg-soft);
  color: var(--color-primary); display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.card h3 { margin-bottom: 8px; }
.card p { color: var(--color-ink-soft); font-size: 0.94rem; flex-grow: 1; }
.card-link {
  margin-top: 14px; font-weight: 700; font-size: 0.9rem; text-decoration: none;
  color: var(--color-primary); display: inline-flex; align-items: center; gap: 6px;
}

/* Steps */
.steps { counter-reset: step; display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.step { position: relative; padding-left: 52px; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 38px; height: 38px;
  background: var(--color-primary); color: #fff; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-weight: 800;
}

/* Zone / cities */
.zone-list { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; list-style: none; margin: 0; }
.zone-list a {
  display: inline-block; padding: 9px 16px; border-radius: 999px;
  background: #fff; border: 1px solid var(--color-border); text-decoration: none;
  font-weight: 600; font-size: 0.9rem; color: var(--color-primary);
}
.zone-list a:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.zone-list a.current { background: var(--color-primary); color: #fff; }

/* FAQ (pure CSS, crawlable) */
.faq-item {
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  margin-bottom: 12px; background: #fff; overflow: hidden;
}
.faq-item summary {
  cursor: pointer; padding: 16px 18px; font-weight: 700; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--color-primary); flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item .faq-answer { padding: 0 18px 18px; color: var(--color-ink-soft); }

/* Testimonial */
.testimonial {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow-sm);
}
.testimonial .stars { display: block; margin-bottom: 10px; }
.testimonial cite { display: block; margin-top: 12px; font-style: normal; font-weight: 700; color: var(--color-primary); font-size: 0.9rem; }

/* CTA band */
.cta-band {
  background: var(--color-primary); color: #fff; text-align: center; border-radius: var(--radius);
  padding: 44px 28px;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: #dbe6f5; max-width: 52ch; margin-left: auto; margin-right: auto; }
.cta-band .btn-primary { margin-top: 8px; }

/* Breadcrumb */
.breadcrumb {
  font-size: 0.85rem; color: var(--color-ink-soft); padding: 14px 0 0;
}
.breadcrumb a { color: var(--color-ink-soft); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-primary); }

/* Service detail */
.service-hero { background: var(--color-bg-soft); }
.service-hero .container { display: block; }
.service-detail-grid {
  display: grid; grid-template-columns: 2fr 1fr; gap: 40px; align-items: start;
}
.sidebar-card {
  background: var(--color-bg-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: 22px; position: sticky; top: 90px;
}
.sidebar-card h3 { font-size: 1rem; margin-bottom: 12px; }
.sidebar-card ul { list-style: none; padding: 0; margin: 0 0 16px; }
.sidebar-card ul li { margin-bottom: 8px; }
.sidebar-card ul a { text-decoration: none; font-weight: 600; font-size: 0.9rem; color: var(--color-primary); }
.sidebar-card ul a:hover { text-decoration: underline; }

/* Footer */
footer.site-footer {
  background: var(--color-primary-dark); color: #cdd9ec; padding: 48px 0 24px; margin-top: 40px;
}
.footer-grid {
  display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-bottom: 32px;
}
.footer-grid h4 { color: #fff; font-size: 0.95rem; margin-bottom: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 8px; font-size: 0.88rem; }
.footer-grid a { color: #cdd9ec; text-decoration: none; }
.footer-grid a:hover { color: #fff; text-decoration: underline; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12); padding-top: 20px;
  font-size: 0.8rem; color: #94a7c7; display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 10px;
}
.footer-bottom a { color: #94a7c7; }

/* Mobile call bar */
.mobile-call-bar {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
  background: var(--color-accent); color: #2a1a02;
}
.mobile-call-bar a {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px; font-weight: 800; text-decoration: none; color: #2a1a02;
}

@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .service-detail-grid { grid-template-columns: 1fr; }
  .sidebar-card { position: static; }
  nav.main-nav { display: none; }
  .header-cta .btn-outline { display: none; }
  .mobile-call-bar { display: block; }
  body { padding-bottom: 58px; }
}

/* Icon sizing */
svg { width: 18px; height: 18px; flex-shrink: 0; }
.logo-mark svg { width: 22px; height: 22px; }
.card-icon svg { width: 24px; height: 24px; }
.topbar-badge svg { width: 15px; height: 15px; }
.trust-item svg { width: 16px; height: 16px; }
.hero-card ul svg { width: 16px; height: 16px; }
.card-link svg { width: 14px; height: 14px; }

@media (max-width: 560px) {
  .topbar .container { justify-content: center; text-align: center; }
  .footer-bottom { justify-content: center; text-align: center; }
}