/* === SITE 4 — MAÇONNERIE === */
/* Univers : Chantier brut — béton, jaune signalisation, fer */

:root {
  --concrete: #6b6b6b;
  --concrete-dark: #2a2a2a;
  --concrete-light: #d4d4d4;
  --bg: #f4f4f0;
  --paper: #fafaf6;
  --safety: #fcd34d;
  --safety-dark: #d97706;
  --black: #0f0f0f;
  --rebar: #b91c1c;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--black);
  font-family: 'Roboto Condensed', 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  /* Texture béton subtle */
  background-image:
    radial-gradient(circle at 25% 25%, rgba(0,0,0,.012) 1px, transparent 1.5px),
    radial-gradient(circle at 75% 75%, rgba(0,0,0,.012) 1px, transparent 1.5px);
  background-size: 8px 8px;
}
h1, h2, h3 {
  font-family: 'Archivo', 'Archivo Black', Impact, sans-serif;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -.02em;
  line-height: 1;
}
.mono { font-family: 'JetBrains Mono', monospace; }

.container { max-width: 1240px; margin: 0 auto; padding: 0 28px; }

/* HEADER — bandeau chantier */
header {
  background: var(--black);
  color: var(--paper);
  padding: 0;
  border-bottom: 6px solid var(--safety);
  position: relative;
}
header::before {
  content: '';
  position: absolute;
  bottom: -6px; left: 0; right: 0; height: 6px;
  background: repeating-linear-gradient(45deg, var(--safety) 0 12px, var(--black) 12px 24px);
  z-index: 1;
}
header nav { display: flex; justify-content: space-between; align-items: center; padding: 18px 0; }
.logo {
  font-family: 'Archivo', sans-serif;
  font-weight: 900;
  font-size: 1.4rem;
  text-transform: uppercase;
  color: var(--paper);
  text-decoration: none;
  letter-spacing: -.02em;
}
.logo span { color: var(--safety); }

/* HERO — Chantier */
.hero-chantier {
  background: var(--concrete-dark);
  color: var(--paper);
  padding: 80px 0 100px;
  position: relative;
  overflow: hidden;
}
.hero-chantier::before {
  content: 'CHANTIER';
  position: absolute;
  top: 50%; right: -40px;
  transform: translateY(-50%) rotate(-90deg);
  font-family: 'Archivo Black', Impact, sans-serif;
  font-size: 12rem;
  color: rgba(252, 211, 77, .04);
  letter-spacing: -.05em;
  pointer-events: none;
  z-index: 0;
}
.hero-chantier .container { position: relative; z-index: 1; }

.tape {
  display: inline-block;
  background: var(--safety);
  color: var(--black);
  padding: 6px 18px;
  font-family: 'Archivo', sans-serif;
  font-weight: 900;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .15em;
  margin-bottom: 28px;
  transform: rotate(-1.5deg);
}

.hero-chantier h1 {
  font-size: clamp(2.8rem, 6.5vw, 5.5rem);
  color: var(--paper);
  max-width: 1000px;
  margin-bottom: 32px;
}
.hero-chantier h1 mark {
  background: var(--safety);
  color: var(--black);
  padding: 0 10px;
}
.hero-chantier .lead {
  font-size: 1.2rem;
  color: var(--concrete-light);
  max-width: 720px;
  margin-bottom: 40px;
  font-weight: 400;
}

/* Calculateur volumes */
.calc {
  background: var(--paper);
  border: 4px solid var(--safety);
  padding: 40px;
  margin-top: 50px;
  color: var(--black);
}
.calc-title {
  font-family: 'Archivo', sans-serif;
  font-weight: 900;
  font-size: 1.4rem;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 12px;
}
.calc-title::before {
  content: '⚒'; font-size: 1.6rem;
}
.calc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.calc-cell {
  background: var(--bg);
  padding: 18px;
  border-left: 4px solid var(--concrete-dark);
}
.calc-cell:nth-child(2) { border-color: var(--safety); }
.calc-cell:nth-child(3) { border-color: var(--rebar); }
.calc-cell:nth-child(4) { border-color: var(--concrete); }
.calc-cell .lab {
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--concrete);
  margin-bottom: 6px;
}
.calc-cell .val {
  font-family: 'Archivo', sans-serif;
  font-weight: 900;
  font-size: 2rem;
  line-height: 1;
}
.calc-cell .un { font-family: 'Roboto Condensed', sans-serif; font-size: .85rem; color: var(--concrete); margin-top: 4px; }
@media (max-width: 768px) { .calc-grid { grid-template-columns: 1fr 1fr; } }

/* CTA chantier */
.btn-chantier {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--safety);
  color: var(--black);
  padding: 18px 36px;
  font-family: 'Archivo', sans-serif;
  font-weight: 900;
  font-size: 1rem;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .04em;
  border: 3px solid var(--black);
  box-shadow: 6px 6px 0 var(--black);
  transition: all .15s;
}
.btn-chantier:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0 var(--black);
}

section { padding: 80px 0; }
section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 32px;
}
section h2 .pin {
  display: inline-block;
  background: var(--safety);
  color: var(--black);
  padding: 0 14px;
  margin-right: 8px;
}

/* Risques sol cards */
.risk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 3px solid var(--black);
}
.risk-card {
  padding: 28px 24px;
  border-right: 3px solid var(--black);
  background: var(--paper);
}
.risk-card:last-child { border-right: 0; }
.risk-card .icon {
  font-family: 'Archivo Black', sans-serif;
  font-size: 2rem;
  color: var(--rebar);
  display: inline-block;
  border: 3px solid var(--black);
  width: 56px; height: 56px;
  text-align: center;
  line-height: 50px;
  margin-bottom: 16px;
  background: var(--safety);
}
.risk-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
@media (max-width: 768px) {
  .risk-grid { grid-template-columns: 1fr; }
  .risk-card { border-right: 0; border-bottom: 3px solid var(--black); }
}

footer {
  background: var(--black);
  color: var(--concrete-light);
  padding: 60px 0 30px;
  border-top: 6px solid var(--safety);
}
footer a { color: var(--safety); text-decoration: none; font-family: 'Roboto Condensed', sans-serif; }

.api-block {
  background: var(--paper);
  border: 3px solid var(--black);
  border-left-width: 12px;
  border-left-color: var(--safety);
  padding: 20px 24px;
  margin: 24px 0;
}
.api-block h3 { font-size: 1.05rem; color: var(--black); margin-bottom: 10px; }