/* ============================================================
   L'Électronicien — Feuille de style principale
   ============================================================ */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fc;
  --color-bg-dark: #0f1a2b;
  --color-text: #1a2332;
  --color-text-muted: #5a6578;
  --color-text-light: #ffffff;
  --color-primary: #1e4d8c;
  --color-primary-dark: #153a6b;
  --color-accent: #00a8e8;
  --color-border: #e1e7ef;
  --color-border-dark: #1f3050;
  --shadow-sm: 0 1px 3px rgba(15, 26, 43, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 26, 43, 0.08);
  --shadow-lg: 0 12px 28px rgba(15, 26, 43, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.2s ease;
  --max-width: 1200px;
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent); }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; margin: 0 0 0.6em; color: var(--color-text); }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  z-index: 1000;
}
.skip-link:focus { left: 0; }

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================================
   Header / Navigation
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 0.5rem;
  flex-wrap: wrap;
}
@media (max-width: 768px) {
  .nav {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas: "brand lang" "links links";
    align-items: center;
    gap: 0.5rem;
  }
  .nav-brand { grid-area: brand; }
  .nav-lang   { grid-area: lang; }
  .nav-links  {
    grid-area: links;
    justify-content: center;
    border-top: 1px solid var(--color-border);
    padding-top: 0.5rem;
  }
}
.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
  text-decoration: none;
}
.nav-brand:hover { color: var(--color-primary); }
.nav-brand img {
  height: 36px;
  width: auto;
  display: block;
  flex-shrink: 0;
  border-radius: 50%;
}
.nav-brand span { display: inline-block; }
.brand-inline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}
.brand-inline h4 { margin: 0 !important; line-height: 1; }
.footer-logo {
  height: 36px;
  width: auto;
  display: block;
  flex-shrink: 0;
  border-radius: 50%;
  background-color: #0a1220;
}
.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.25rem;
  flex-wrap: wrap;
}
.nav-links a {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  color: var(--color-text);
  font-weight: 500;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}
.nav-lang {
  display: flex;
  gap: 0.25rem;
  font-size: 0.85rem;
}
.nav-lang a {
  padding: 0.35rem 0.6rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.nav-lang a[aria-current="page"] {
  background: var(--color-primary);
  color: #fff;
}

/* ============================================================
   Sections
   ============================================================ */
section { padding: 4rem 0; }
.section-alt { background: var(--color-bg-alt); }
.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
}
.section-dark h1,
.section-dark h2,
.section-dark h3 { color: #fff; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  background: linear-gradient(135deg, #0f1a2b 0%, #1e4d8c 100%);
  color: #fff;
  padding: 6rem 0 5rem;
  text-align: center;
}
.hero h1 { color: #fff; margin-bottom: 1rem; }
.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 720px;
  margin: 0 auto 2rem;
}
.hero .btn { margin-top: 0.5rem; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  font-size: 1rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
}
.btn-primary:hover {
  background: #0090c8;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}
.btn-outline-light:hover {
  background: #fff;
  color: var(--color-primary);
}

/* ============================================================
   Intro Split (homepage)
   ============================================================ */
.intro-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 768px) {
  .intro-split { grid-template-columns: 1fr; gap: 2rem; }
}
.intro-split img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

/* ============================================================
   Cards grid
   ============================================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}
.card h3 { color: var(--color-primary); margin-bottom: 0.75rem; }
.card p { color: var(--color-text-muted); margin: 0; }
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 700;
}

/* ============================================================
   Section heading
   ============================================================ */
.section-heading {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 1rem;
}
.section-heading + p {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 720px;
  margin: 0 auto;
}

/* ============================================================
   Services list (rebuilt services page)
   ============================================================ */
.services-block {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  margin-bottom: 2rem;
}
.services-block h3 {
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.services-block .number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
}
.services-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.services-list li {
  padding: 1rem 0 1rem 2rem;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}
.services-list li:last-child { border-bottom: none; }
.services-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 1rem;
  color: var(--color-accent);
  font-weight: 700;
}
.services-list li strong {
  display: block;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}
.services-list li span {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   References grid
   ============================================================ */
.refs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}
.ref {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.ref:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.ref-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-bg-alt);
  line-height: 1;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}
.ref-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.ref h3 { margin-bottom: 0.75rem; }
.ref p { color: var(--color-text-muted); margin: 0; font-size: 0.95rem; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-group { margin-bottom: 3rem; }
.faq-group > h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}
details {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  transition: var(--transition);
}
details[open] {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}
summary {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  position: relative;
  padding-right: 3rem;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 300;
  transition: var(--transition);
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details > :not(summary) {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-muted);
}

/* ============================================================
   Contact
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  margin-top: 2.5rem;
}
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid form {
    order: 1;
  }
  .contact-info {
    order: 2;
  }
}
.contact-info {
  background: var(--color-bg-alt);
  padding: 2rem;
  border-radius: var(--radius-md);
}
.contact-info h3 { color: var(--color-primary); margin-top: 0; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.05em; }
.contact-info p { color: var(--color-text-muted); margin-bottom: 1.5rem; }
.contact-info p:last-child { margin-bottom: 0; }

form { display: grid; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--color-text);
}
label .req { color: #c83b3b; }
input[type="text"],
input[type="email"],
input[type="file"],
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  transition: var(--transition);
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.15);
}
textarea { min-height: 160px; resize: vertical; }
.form-hint { font-size: 0.85rem; color: var(--color-text-muted); margin-top: 0.25rem; }
.anti-robot {
  background: var(--color-bg-alt);
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.anti-robot label { margin-bottom: 0.5rem; }

/* ============================================================
   CTA band
   ============================================================ */
.cta-band {
  text-align: center;
  padding: 4rem 0;
  background: var(--color-bg-dark);
  color: #fff;
}
.cta-band h2 { color: #fff; margin-bottom: 1rem; }
.cta-band p { color: rgba(255, 255, 255, 0.8); margin-bottom: 2rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: #0a1220;
  color: rgba(255, 255, 255, 0.75);
  padding: 3rem 0 1.5rem;
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.site-footer h4 {
  color: #fff;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.site-footer a { color: rgba(255, 255, 255, 0.75); }
.site-footer a:hover { color: var(--color-accent); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: 0.5rem; }
.site-footer .brand-block p { color: rgba(255, 255, 255, 0.6); max-width: 400px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
}

/* ============================================================
   Utilities
   ============================================================ */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }