/* TRDC Mécanique Mobile - styles. Direction "atelier sous tension" : noir profond, rouge-signal, typo massive. */

/* --- Variables --- */
:root {
  --noir: #0a0b0d;
  --noir-2: #121418;
  --gris-fonce: #1c2026;
  --gris: #3a4048;
  --gris-clair: #aab1ba;
  --blanc: #ffffff;
  --rouge: #e01e26;
  --facebook: #1877f2;
  --rouge-fonce: #b3161c;
  --rouge-clair: #ff3b43;

  --ff-display: "Arial Black", Impact, "Segoe UI", sans-serif;
  --ff-body: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --maxw: 1200px;
  --rad: 6px;
  --shadow: 0 24px 50px rgba(0,0,0,.55);
  --grid: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
          linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; font-family: var(--ff-body); color: var(--blanc);
  background: var(--noir); line-height: 1.6; -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1; letter-spacing: -.02em; }
ul { margin: 0; padding: 0; list-style: none; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* --- Boutons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 15px 26px; border-radius: var(--rad); font-weight: 800; font-size: .92rem;
  letter-spacing: .03em; text-transform: uppercase; cursor: pointer;
  border: 2px solid transparent; transition: transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--rouge); color: var(--blanc); }
.btn-primary:hover { background: var(--rouge-fonce); }.btn-call { background: var(--rouge); color: var(--blanc); padding: 11px 18px; font-size: .82rem; }
/* Bouton Facebook : bleu officiel, avec icône */
.btn-fb { background: var(--facebook); color: var(--blanc); gap: 10px; }
.btn-fb:hover { background: #0f60d0; }
.btn-fb svg { width: 18px; height: 18px; }
.btn-call:hover { background: var(--rouge-fonce); }

/* --- Titres de section + numéro filigrane --- */
.sec-head { position: relative; margin-bottom: 48px; }
.sec-head.center { text-align: center; max-width: 780px; margin-left: auto; margin-right: auto; }
.sec-num {
  position: absolute; top: -42px; left: -8px; z-index: 0;
  font-family: var(--ff-display); font-size: 9rem; line-height: 1;
  color: rgba(255,255,255,.03); letter-spacing: -.05em; pointer-events: none; user-select: none;
}
.sec-head.center .sec-num { left: 50%; transform: translateX(-50%); }
.sec-eyebrow {
  position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 10px;
  color: var(--rouge-clair); font-weight: 800; text-transform: uppercase;
  letter-spacing: .18em; font-size: .78rem; margin-bottom: 14px;
}
.sec-eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--rouge); }
.sec-head h2 { position: relative; z-index: 1; }
h2 { font-family: var(--ff-display); font-size: clamp(1.9rem, 4.2vw, 3rem); text-transform: uppercase; }

/* --- Reveal au scroll --- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===================== HEADER ===================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,11,13,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gris-fonce);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
.brand-logo { height: 48px; width: auto; }
.main-nav { display: flex; gap: 26px; margin-left: auto; }
.main-nav a {
  font-weight: 700; font-size: .88rem; text-transform: uppercase; letter-spacing: .04em;
  color: var(--gris-clair); position: relative; padding: 4px 0;
}
.main-nav a:hover { color: var(--blanc); }
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px;
  background: var(--rouge); transition: width .2s ease;
}
.main-nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
  background: transparent; border: 1px solid var(--gris); color: var(--gris-clair);
  border-radius: var(--rad); padding: 7px 10px; font-weight: 800; font-size: .8rem;
  cursor: pointer; letter-spacing: .05em;
}
.lang-toggle:hover { border-color: var(--rouge); color: var(--blanc); }
.lang-toggle .lang-active { color: var(--blanc); }
.lang-toggle .lang-sep { margin: 0 3px; color: var(--gris); }

.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-burger span { width: 24px; height: 2px; background: var(--blanc); transition: .25s; }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav { display: none; flex-direction: column; gap: 4px; padding: 16px 24px 24px; background: var(--noir-2); border-bottom: 1px solid var(--gris-fonce); }
.mobile-nav.open { display: flex; }
.mobile-nav a { padding: 12px 4px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; border-bottom: 1px solid var(--gris-fonce); }
.mobile-nav .mobile-call { margin-top: 12px; border-bottom: none; }

/* ===================== HERO ===================== */
.hero { position: relative; overflow: hidden; min-height: 90vh; display: flex; align-items: center; }
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.l-grad { position: absolute; inset: 0;
  background:
    radial-gradient(120% 80% at 85% 12%, rgba(224,30,38,.22), transparent 50%),
    radial-gradient(100% 100% at 8% 92%, rgba(224,30,38,.08), transparent 55%),
    linear-gradient(155deg, var(--noir) 0%, var(--noir-2) 55%, var(--gris-fonce) 100%); }
.l-grid { position: absolute; inset: 0; opacity: .55; background-image: var(--grid); background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 70% 30%, #000 30%, transparent 80%);
          mask-image: radial-gradient(120% 90% at 70% 30%, #000 30%, transparent 80%); }
.l-speed { position: absolute; inset: -20%; opacity: .5;
  background: repeating-linear-gradient(118deg, transparent 0 60px, rgba(224,30,38,0) 60px 61px, rgba(224,30,38,.5) 61px 63px, transparent 63px 130px);
  -webkit-mask-image: linear-gradient(118deg, transparent 35%, #000 78%);
          mask-image: linear-gradient(118deg, transparent 35%, #000 78%); }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; z-index: 4;
  background: linear-gradient(90deg, transparent, var(--rouge), transparent); }

.hero-ghost { position: absolute; right: -1%; bottom: -7%; z-index: 1;
  font-family: var(--ff-display); font-size: 22rem; line-height: 1;
  color: rgba(255,255,255,.022); letter-spacing: -.04em; pointer-events: none; user-select: none; }

.hero-inner { position: relative; z-index: 3; display: grid; grid-template-columns: 1.02fr .98fr; gap: 24px; align-items: center; width: 100%; padding: 60px 24px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px; background: rgba(224,30,38,.1);
  border: 1px solid rgba(224,30,38,.45); padding: 8px 16px; border-radius: 40px;
  font-weight: 800; font-size: .76rem; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 22px;
}
.pulse-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--rouge-clair); position: relative; flex-shrink: 0; }
.pulse-dot::after { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--rouge-clair); animation: pulse 1.8s ease-out infinite; }
@keyframes pulse { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(3.2); opacity: 0; } }

.hero h1 { font-family: var(--ff-display); text-transform: uppercase; font-size: clamp(2.6rem, 5.6vw, 4.6rem); line-height: .92; margin-bottom: 22px; }
.hero h1 .red { color: var(--rouge); }
.hero-sub { font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: var(--gris-clair); max-width: 540px; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.truck-stage { position: relative; display: flex; justify-content: center; align-items: center; }
.truck-glow { position: absolute; width: 95%; height: 60%; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(224,30,38,.32), transparent); filter: blur(22px); }
.truck-img { position: relative; width: 100%; max-width: 560px; filter: drop-shadow(0 30px 40px rgba(0,0,0,.7)); }

/* ===================== BANDE CRÉDIBILITÉ ===================== */
.cred-band { background: var(--rouge); position: relative; z-index: 5; }
.cred-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.cred-item { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 24px 12px; border-right: 1px solid rgba(255,255,255,.2); }
.cred-item:last-child { border-right: none; }
.cred-item strong { font-family: var(--ff-display); font-size: 1.6rem; text-transform: uppercase; }
.cred-item span { font-size: .85rem; text-transform: uppercase; letter-spacing: .05em; opacity: .92; }

/* ===================== SERVICES ===================== */
.services { padding: 96px 0; background: var(--noir); position: relative; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--noir-2); border: 1px solid var(--gris-fonce); border-radius: var(--rad);
  padding: 28px 24px; position: relative; overflow: hidden;
  transition: transform .18s ease, border-color .18s ease;
}
.card::before { content: ""; position: absolute; left: 0; top: 0; width: 4px; height: 100%; background: var(--rouge); transform: scaleY(0); transform-origin: top; transition: transform .2s ease; }
.card:hover { transform: translateY(-5px); border-color: var(--gris); }
.card:hover::before { transform: scaleY(1); }
.card:hover .card-ico { background: var(--rouge); color: var(--blanc); border-color: var(--rouge); transform: rotate(-6deg); }
.card-ico {
  display: inline-flex; width: 54px; height: 54px; align-items: center; justify-content: center;
  background: rgba(224,30,38,.12); border: 1px solid rgba(224,30,38,.35); border-radius: 10px;
  color: var(--rouge-clair); margin-bottom: 18px; transition: all .18s ease;
}
.card-ico svg { width: 27px; height: 27px; }
.card h3 { font-size: 1.2rem; text-transform: uppercase; margin-bottom: 10px; letter-spacing: -.01em; }
.card p { color: var(--gris-clair); font-size: .95rem; margin: 0; line-height: 1.55; }

/* Carte mise en avant : Service routier 24/7 */
.card.featured {
  background: linear-gradient(160deg, #1a1216, var(--noir-2));
  border-color: var(--rouge); box-shadow: 0 0 0 1px rgba(224,30,38,.25), var(--shadow);
}
.card.featured::after {
  content: "24/7"; position: absolute; right: 14px; top: 10px;
  font-family: var(--ff-display); font-size: 2.4rem; color: rgba(224,30,38,.16); letter-spacing: -.03em;
}
.card.featured .card-ico { background: var(--rouge); color: var(--blanc); border-color: var(--rouge); }
.card-flag { display: inline-block; background: var(--rouge); color: #fff; font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; padding: 4px 10px; border-radius: 4px; margin-bottom: 14px; }

/* ===================== FLOTTES ===================== */
.fleets { padding: 96px 0; background: linear-gradient(180deg, var(--noir-2), var(--noir)); position: relative; overflow: hidden; }
.fleets::before { content: ""; position: absolute; inset: 0; background-image: var(--grid); background-size: 64px 64px; opacity: .4; pointer-events: none;
  -webkit-mask-image: radial-gradient(100% 100% at 100% 0, #000, transparent 70%); mask-image: radial-gradient(100% 100% at 100% 0, #000, transparent 70%); }
.fleets-inner { position: relative; display: grid; grid-template-columns: 1.3fr .7fr; gap: 50px; align-items: center; }
.fleets h2 { margin-bottom: 20px; }
.fleets-copy p { color: var(--gris-clair); font-size: 1.05rem; margin-bottom: 24px; max-width: 620px; }
.fleet-list { display: flex; flex-direction: column; gap: 12px; }
.fleet-list li { position: relative; padding-left: 30px; font-weight: 600; }
.fleet-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 14px; height: 14px; background: var(--rouge); clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.fleets-stats { display: flex; flex-direction: column; gap: 14px; }
.stat { background: var(--noir); border: 1px solid var(--gris-fonce); border-left: 4px solid var(--rouge); border-radius: var(--rad); padding: 18px 22px; }
.stat strong { display: block; font-family: var(--ff-display); font-size: 1.5rem; text-transform: uppercase; }
.stat span { color: var(--gris-clair); font-size: .9rem; }

/* ===================== À PROPOS ===================== */
.about { padding: 96px 0; background: var(--noir); }
.about-inner { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; align-items: center; }
.about-photo img { border-radius: var(--rad); border: 1px solid var(--gris-fonce); box-shadow: var(--shadow); }
.about h2 { margin-bottom: 20px; }
.about-copy p { color: var(--gris-clair); font-size: 1.05rem; margin: 0 0 18px; max-width: 560px; }
.about-copy .btn { margin-top: 10px; }

/* ===================== ZONE ===================== */
.zone { padding: 96px 0; background: linear-gradient(160deg, var(--gris-fonce), var(--noir)); position: relative; }
.zone-sub { color: var(--gris-clair); font-size: 1.05rem; margin-top: 14px; }
.zone-cities { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 36px; }
.zone-cities span { background: var(--noir-2); border: 1px solid var(--gris); border-radius: 40px; padding: 10px 22px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; font-size: .88rem; }
.zone-cities span:last-child { background: var(--rouge); border-color: var(--rouge); }

/* ===================== CONTACT ===================== */
.contact { padding: 96px 0; position: relative; overflow: hidden;
  background:
    radial-gradient(90% 70% at 85% 0%, rgba(224,30,38,.14), transparent 55%),
    linear-gradient(180deg, var(--noir-2), var(--noir)); }
/* Bordure rouge haute : marque nettement le début de la section */
.contact::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--rouge), transparent); }
/* Grille technique en filigrane */
.contact::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image: var(--grid); background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(100% 100% at 100% 0, #000, transparent 65%);
          mask-image: radial-gradient(100% 100% at 100% 0, #000, transparent 65%); }
.contact .wrap { position: relative; z-index: 1; }
.contact-inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 50px; align-items: start; }
.contact h2 { margin-bottom: 16px; }
.contact-info p { color: var(--gris-clair); margin-bottom: 28px; max-width: 440px; }
.contact-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 32px; }
.contact-list { display: flex; flex-direction: column; gap: 16px; }
.contact-list li { display: flex; align-items: center; gap: 14px; font-size: 1.05rem; font-weight: 600; }
.contact-list a:hover { color: var(--rouge-clair); }
.ci-ico { display: inline-flex; width: 44px; height: 44px; align-items: center; justify-content: center; background: rgba(224,30,38,.12); border: 1px solid rgba(224,30,38,.35); border-radius: 10px; color: var(--rouge-clair); flex-shrink: 0; }
/* Variante Facebook : icône bleue */
.ci-fb { background: rgba(24,119,242,.15); border-color: rgba(24,119,242,.5); color: var(--facebook); }
.ci-ico svg { width: 22px; height: 22px; }

.contact-form { background: var(--noir-2); border: 1px solid var(--gris-fonce); border-radius: var(--rad); padding: 32px; }
.field { margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { display: block; font-weight: 700; font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px; color: var(--gris-clair); }
.field input, .field select, .field textarea { width: 100%; background: var(--noir); border: 1px solid var(--gris); border-radius: var(--rad); color: var(--blanc); padding: 12px 14px; font-size: .98rem; font-family: inherit; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--rouge); border-color: var(--rouge); }
.field textarea { resize: vertical; }
.form-submit { width: 100%; margin-top: 6px; }
.form-note { font-size: .85rem; color: var(--gris-clair); margin: 14px 0 0; text-align: center; }
.form-note.ok { color: var(--rouge-clair); font-weight: 700; }

/* ===================== FOOTER ===================== */
.site-footer { background: var(--noir); border-top: 1px solid var(--gris-fonce); padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-logo { height: 64px; width: auto; margin-bottom: 16px; }
.footer-brand p { color: var(--gris-clair); max-width: 240px; }
.footer-col h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--rouge-clair); margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li, .footer-col a { color: var(--gris-clair); font-size: .92rem; }
.footer-col a:hover { color: var(--blanc); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--gris-fonce); color: var(--gris); font-size: .85rem; }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 980px) {
  .main-nav { display: none; }
  .nav-burger { display: flex; }
  .header-actions .btn-call { display: none; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; padding: 48px 24px 60px; }
  .hero-cta { justify-content: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-badge { margin-left: auto; margin-right: auto; }
  .truck-stage { order: -1; max-width: 480px; margin: 0 auto 10px; }
  .hero-ghost { font-size: 12rem; bottom: -2%; }
  .fleets-inner, .about-inner, .contact-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-photo { order: 2; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .sec-num { font-size: 6rem; top: -28px; }
}
@media (max-width: 560px) {
  .cred-grid { grid-template-columns: repeat(2, 1fr); }
  .cred-item:nth-child(2) { border-right: none; }
  .cards { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
  h2 { font-size: 1.7rem; }
}

/* Accessibilité */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--rouge-clair); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}