:root{
  --blue:#0a7fa9;
  --blue-deep:#065b7c;
  --sand:#d6b48a;
  --sand-deep:#a77f4f;
  --black:#0c1116;
  --black-soft:#161d24;
  --white:#f5efe7;
  --line:rgba(255,255,255,.08);
  --text:#f3f0ea;
  --muted:rgba(243,240,234,.72);
  --success:#1d8f5a;
  --danger:#c94b4b;
}

*,
*::before,
*::after{
  box-sizing:border-box;
}

html,body{
  margin:0;
  padding:0;
  font-family:"Segoe UI", Arial, sans-serif;
  background:var(--black);
  color:var(--text);
}

body{
  min-height:100vh;
}

.devis-page{
  min-height:100vh;
}

.devis-hero{
  position:relative;
  min-height:100vh;
  overflow:hidden;
  background:
    url("../assets/background.jpg") center center / cover no-repeat,
    linear-gradient(135deg,#0b141c 0%,#121a22 45%,#0a7fa9 75%,#d6b48a 100%);
}

.devis-hero__overlay{
  position:absolute;
  inset:0;
  background:
    linear-gradient(rgba(12,17,22,.64), rgba(12,17,22,.82)),
    repeating-linear-gradient(
      90deg,
      rgba(255,255,255,.03) 0,
      rgba(255,255,255,.03) 1px,
      transparent 1px,
      transparent 160px
    );
}

.devis-shell{
  position:relative;
  z-index:2;
  width:min(1200px, calc(100% - 32px));
  margin:0 auto;
  min-height:100vh;
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:20px;
  align-items:center;
  padding:40px 0;
}

.devis-intro{
  padding:20px;
}

.eyebrow{
  margin:0 0 12px;
  color:var(--sand);
  font-size:12px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
}

.devis-intro h1{
  margin:0;
  font-size:clamp(38px, 5vw, 72px);
  line-height:.95;
  text-transform:uppercase;
}

.devis-intro h1 span{
  color:var(--sand);
}

.devis-intro p:last-child{
  max-width:520px;
  margin:24px 0 0;
  line-height:1.8;
  color:rgba(245,239,231,.86);
  font-size:18px;
}

.devis-card{
  background:rgba(15,21,27,.92);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  padding:28px;
  box-shadow:0 18px 60px rgba(0,0,0,.28);
}

.devis-progress{
  margin-bottom:24px;
}

.devis-progress__bar{
  height:8px;
  background:rgba(255,255,255,.08);
  overflow:hidden;
}

.devis-progress__bar span{
  display:block;
  height:100%;
  width:25%;
  background:linear-gradient(90deg,var(--sand),var(--blue));
  transition:width .25s ease;
}

.devis-steps-labels{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
  margin-top:12px;
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.12em;
  color:rgba(255,255,255,.5);
}

.devis-steps-labels span.is-active{
  color:var(--sand);
}

.step{
  display:none;
}

.step.is-active{
  display:block;
}

.step h2{
  margin:0 0 22px;
  font-size:clamp(28px, 3vw, 42px);
  text-transform:uppercase;
  line-height:1;
}

.choice-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:14px;
  margin-bottom:18px;
}

.choice-card{
  position:relative;
  display:block;
  cursor:pointer;
}

.choice-card input{
  position:absolute;
  opacity:0;
  pointer-events:none;
}

.choice-card span{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:86px;
  padding:16px;
  border:1px solid rgba(255,255,255,.12);
  background:#10161d;
  text-align:center;
  font-weight:700;
  letter-spacing:.06em;
  transition:.2s ease;
}

.choice-card input:checked + span{
  background:linear-gradient(135deg,var(--blue-deep),var(--blue));
  border-color:transparent;
  color:#fff;
}

.form-row{
  margin-bottom:16px;
}

.form-row.two-cols{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
}

.field{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.field.full{
  width:100%;
}

.field label{
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sand);
}

.field input,
.field select,
.field textarea{
  width:100%;
  border:1px solid rgba(255,255,255,.10);
  background:#0b1015;
  color:var(--white);
  padding:16px 18px;
  font:inherit;
  outline:none;
}

.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:var(--blue);
}

.checkbox-line{
  display:flex;
  gap:12px;
  align-items:flex-start;
  line-height:1.6;
  color:rgba(245,239,231,.88);
}

.review-box{
  background:#0b1015;
  border:1px solid rgba(255,255,255,.08);
  padding:18px;
  line-height:1.8;
}

.review-box strong{
  color:var(--sand);
}

.submit-box{
  margin-top:18px;
}

.form-note{
  color:var(--muted);
  margin:12px 0 0;
  line-height:1.7;
}

.devis-actions{
  display:flex;
  justify-content:space-between;
  gap:12px;
  margin-top:24px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:54px;
  padding:0 24px;
  border:1px solid transparent;
  cursor:pointer;
  font-size:13px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  transition:.2s ease;
}

.btn:disabled{
  opacity:.45;
  cursor:not-allowed;
}

.btn-primary{
  background:var(--blue);
  color:#fff;
}

.btn-primary:hover:not(:disabled){
  background:var(--blue-deep);
}

.btn-secondary{
  background:transparent;
  border-color:rgba(245,239,231,.35);
  color:var(--white);
}

.btn-secondary:hover:not(:disabled){
  background:rgba(245,239,231,.08);
}

.form-message{
  margin-top:16px;
  min-height:24px;
  line-height:1.6;
}

.form-message.is-error{
  color:#ffb3b3;
}

.form-message.is-success{
  color:#95f0c0;
}

@media (max-width: 980px){
  .devis-shell{
    grid-template-columns:1fr;
    align-items:start;
    padding:28px 0;
  }

  .devis-intro{
    padding:0;
  }
}

@media (max-width: 680px){
  .devis-card{
    padding:18px;
  }

  .choice-grid,
  .form-row.two-cols,
  .devis-steps-labels{
    grid-template-columns:1fr;
  }

  .devis-actions{
    flex-direction:column;
  }

  .btn{
    width:100%;
  }
}

.field-error {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: #ffb3b3;
  min-height: 18px;
}

.is-invalid {
  border-color: #c94b4b !important;
  box-shadow: 0 0 0 1px rgba(201, 75, 75, 0.15);
}

.checkbox-line a {
  color: var(--sand);
  text-decoration: underline;
}