:root {
    --bleu:      #1a2e5a;
    --rose:      #e0195a;
    --rose-lite: #fff0f4;
    --gris-bg:   #f4f6fb;
    --gris-brd:  #dde2ee;
    --gris-txt:  #6b7490;
    --blanc:     #ffffff;
    --ombre:     0 4px 24px rgba(26,46,90,.10);
    --ombre-sm:  0 2px 8px  rgba(26,46,90,.08);
    --radius:    14px;
    --radius-sm: 8px;
  }

  /* ── Card principale ── */
  .card {
    font-family: 'DM Sans', sans-serif;
    background: var(--blanc);
    border-radius: 20px;
    box-shadow: var(--ombre);
    border-left: none;
    max-width: 760px;
    width: 100%;
    overflow: hidden;
    margin: 0 auto;
  }

  /* ── En-tête ── */
  .card-header {
    background: #000091;
    padding: 30px 36px 26px;
    text-align: center;
  }
  .card-header .badge {
    display: inline-block;
    background: var(--rose);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 14px;
  }
  .card-header h1 {
    font-family: 'DM Serif Display', serif;
    color: #fff;
    font-size: clamp(1.25rem, 3vw, 1.65rem);
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: 8px;
  }
  .card-header .subtitle {
    color: rgba(255,255,255,.65);
    font-size: 13px;
  }
  .card-header .subtitle strong { color: rgba(255,255,255,.9); }

  /* ── Corps ── */
  .card-body { padding: 30px 36px 36px; }

  /* ── Grille formulaire ── */
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 24px;
  }
  @media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }

  .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .field label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--gris-txt);
    letter-spacing: .02em;
  }

  /* Groupe input + unité */
  .input-wrap {
    position: relative;
    display: flex;
    align-items: center;
  }
  .input-wrap .unit {
    position: absolute;
    right: 14px;
    font-size: 13px;
    color: var(--gris-txt);
    pointer-events: none;
    font-weight: 500;
  }

  input[type="number"],
  input[type="text"],
  input[type="email"],
  input[type="tel"],
  select {
    width: 100%;
    height: 46px;
    padding: 0 44px 0 14px;
    border: 1.5px solid var(--gris-brd);
    border-radius: var(--radius-sm);
    background: var(--gris-bg);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--bleu);
    transition: border-color .2s, box-shadow .2s, background .2s;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
  }
  select { padding-right: 36px; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7490' stroke-width='1.8' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; cursor: pointer; }
  input[type="number"] { padding-right: 52px; }
  input::placeholder { color: #b0b8d0; font-weight: 400; }

  input:focus, select:focus {
    border-color: var(--bleu);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26,46,90,.08);
  }
  input.error, select.error { border-color: var(--rose); box-shadow: 0 0 0 3px rgba(224,25,90,.08); }

  /* ── Autocomplete commune ── */
  .autocomplete-wrap { position: relative; }
  .autocomplete-list {
    position: absolute;
    top: calc(100% + 4px);
    left: 0; right: 0;
    background: #fff;
    border: 1.5px solid var(--gris-brd);
    border-radius: var(--radius-sm);
    box-shadow: var(--ombre);
    max-height: 220px;
    overflow-y: auto;
    z-index: 100;
    display: none;
  }
  .autocomplete-list.open { display: block; }
  .autocomplete-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 13.5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gris-brd);
    transition: background .15s;
  }
  .autocomplete-item:last-child { border-bottom: none; }
  .autocomplete-item:hover, .autocomplete-item.active { background: var(--gris-bg); }
  .autocomplete-item .zone-tag {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--bleu);
    color: #fff;
  }
  .autocomplete-item .cp { color: var(--gris-txt); font-size: 12px; margin-left: 6px; }

  /* ── Tooltip annexes ── */
  .field-help { position: relative; display: inline-flex; align-items: center; gap: 4px; }
  .help-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 16px; height: 16px; border-radius: 50%;
    background: var(--gris-brd); color: var(--gris-txt);
    font-size: 10px; font-weight: 700; cursor: help;
  }
  .tooltip {
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%; transform: translateX(-50%);
    background: var(--bleu); color: #fff;
    font-size: 12px; padding: 8px 12px;
    border-radius: 8px; width: 230px; line-height: 1.5;
    pointer-events: none;
    opacity: 0; transition: opacity .2s;
    z-index: 10;
  }
  .help-icon:hover + .tooltip { opacity: 1; }

  /* ── Bouton Calculer ── */
  .btn-calculer {
    display: block;
    width: 100%;
    margin-top: 20px;
    height: 52px;
    background: var(--rose);
    color: #fff;
    font-family: inherit;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background .2s, transform .1s, box-shadow .2s;
    box-shadow: 0 4px 16px rgba(224,25,90,.30);
  }
  .btn-calculer:hover { background: #c4144d; box-shadow: 0 6px 22px rgba(224,25,90,.40); transform: translateY(-1px); }
  .btn-calculer:active { transform: translateY(0); }

  /* ── Résultats ── */
  #resultats {
    display: none;
    margin-top: 28px;
    animation: fadeUp .4s ease;
  }
  #resultats.visible { display: block; }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .result-main {
    background: linear-gradient(135deg, var(--bleu) 0%, #253d78 100%);
    border-radius: var(--radius);
    padding: 22px 26px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 16px;
  }
  .result-main .label { font-size: 14px; color: rgba(255,255,255,.75); font-weight: 500; }
  .result-main .value {
    font-family: 'DM Serif Display', serif;
    font-size: 2.6rem;
    color: #fff;
    line-height: 1;
  }
  .result-main .value span { font-family: 'DM Sans', sans-serif; font-size: 1rem; font-weight: 500; color: rgba(255,255,255,.75); margin-left: 4px; }

  .result-details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 16px;
  }
  @media (max-width: 480px) { .result-details-grid { grid-template-columns: 1fr; } }

  .detail-card {
    background: var(--gris-bg);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    border: 1.5px solid var(--gris-brd);
  }
  .detail-card .d-title { font-size: 11.5px; font-weight: 700; color: var(--gris-txt); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 8px; }
  .detail-card .d-row { display: flex; justify-content: space-between; align-items: center; font-size: 13.5px; padding: 3px 0; }
  .detail-card .d-key { color: var(--gris-txt); }
  .detail-card .d-val { font-weight: 700; color: var(--bleu); }

  /* Loyers boxes */
  .loyers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 16px;
  }
  @media (max-width: 480px) { .loyers-grid { grid-template-columns: 1fr; } }

  .loyer-card {
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    text-align: center;
    border: 1.5px solid var(--gris-brd);
    transition: box-shadow .2s;
  }
  .loyer-card:hover { box-shadow: var(--ombre-sm); }
  .loyer-card.locav { background: var(--rose-lite); border-color: rgba(224,25,90,.2); }
  .loyer-card.lli   { background: #eef3ff; border-color: rgba(26,46,90,.18); }

  .loyer-card .lc-icon { font-size: 20px; margin-bottom: 4px; }
  .loyer-card .lc-title { font-size: 12.5px; font-weight: 700; margin-bottom: 2px; }
  .loyer-card.locav .lc-title { color: var(--rose); }
  .loyer-card.lli   .lc-title { color: var(--bleu); }
  .loyer-card .lc-sub  { font-size: 11px; color: var(--gris-txt); margin-bottom: 10px; }
  .loyer-card .lc-val  { font-family: 'DM Serif Display', serif; font-size: 2rem; line-height: 1; }
  .loyer-card.locav .lc-val { color: var(--rose); }
  .loyer-card.lli   .lc-val { color: var(--bleu); }
  .loyer-card .lc-unit { font-family: 'DM Sans', sans-serif; font-size: 13px; color: var(--gris-txt); }
  .loyer-card .lc-detail { margin-top: 8px; font-size: 12px; color: var(--gris-txt); }
  .loyer-card .lc-detail strong { color: var(--bleu); }

  /* Alerte */
  .alerte {
    background: #fffbea;
    border: 1.5px solid #f5d44a;
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 12.5px;
    color: #7a6400;
    display: flex;
    gap: 8px;
    align-items: flex-start;
    line-height: 1.55;
  }
  .alerte .icon { flex-shrink: 0; font-size: 15px; margin-top: 1px; }

  /* ── Disclaimer ── */
  .disclaimer {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--gris-brd);
    text-align: center;
    font-size: 12px;
    color: var(--gris-txt);
    line-height: 1.6;
  }
  .disclaimer strong { color: var(--bleu); }
  .disclaimer a { color: var(--rose); text-decoration: none; }
  .disclaimer a:hover { text-decoration: underline; }

  /* ── Erreur message ── */
  .err-msg { font-size: 11.5px; color: var(--rose); margin-top: 3px; display: none; }
  .err-msg.show { display: block; }

  /* ── Étape 2 : coordonnées contact ── */
  .step2-intro {
    text-align: center;
    padding: 28px 0 24px;
    border-bottom: 1px solid var(--gris-brd);
    margin-bottom: 28px;
  }
  .step2-icon {
    font-size: 36px;
    line-height: 1;
    margin-bottom: 12px;
  }
  .step2-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(1.15rem, 2.5vw, 1.4rem);
    font-weight: 400;
    color: #000091;
    margin-bottom: 8px;
  }
  .step2-desc {
    font-size: 13.5px;
    color: var(--gris-txt);
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.6;
  }
  .required { color: var(--rose); }
  .step2-mention {
    font-size: 11.5px;
    color: var(--gris-txt);
    text-align: center;
    margin-top: 14px;
  }
  .step2-mention a { color: var(--rose); text-decoration: none; }
  .step2-mention a:hover { text-decoration: underline; }