@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap');

:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --ink: #415464;
  --muted: #415464;
  --brand: #40bbcd;
  --brand-600: #40bbcd;
  --line: #e5e7eb;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(2,6,23,.06);
  --shadow-sm: 0 2px 8px rgba(2,6,23,.06);
}

* { box-sizing: border-box; }
html, body { height: 100%; overflow-x: hidden; }
img, svg, video { max-width: 100%; height: auto; }

body {
  font-family: 'Montserrat', sans-serif;
  background: url('bg.png') center top / cover no-repeat fixed;
  color: var(--ink);
  padding: 32px 16px;
  line-height: 1.5;
}

.header-logo { max-width: 760px; margin: 0 auto 16px; text-align: center; }
.header-logo img { max-height: 56px; }

.form-container {
  max-width: 760px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.alert {
  border-radius: 14px;
  padding: 14px 16px;
  margin: 12px 0 18px;
  border: 1px solid;
  display: block;
  gap: 10px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
  font-size: 15px;
  overflow-wrap: anywhere;
  position: relative;
  overflow: hidden;
}
.alert--ok { border-color: #bbf7d0; background: #f0fdf4; color: #14532d; }
.alert--err { border-color: #fecaca; background: #fef2f2; color: #7f1d1d; }
.alert .center { display: flex; justify-content: center; width: 100%; }
.alert .submit-btn { position: relative; display: inline-flex; align-items: center; gap: .5rem; }

.alert .center {
  display: flex;
  justify-content: center; /* pour le bouton */
}
.section {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px 18px;
  box-shadow: var(--shadow-sm);
  margin: 18px 0;
  overflow: hidden;
}
.section-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.section-title { font-weight: 700; font-size: 16px; color: #0b2a6b; display: flex; align-items: center; gap: 10px; overflow-wrap: anywhere; }
.step-badge {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--brand); color: #fff; font-weight: 700; font-size: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,.08);
}

.grid-2 { gap: 14px; display: grid; grid-template-columns: 1fr 1fr; }
.grid-2 > *, .form-group { min-width: 0; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }

.form-group { margin-bottom: 14px; }
.form-group label {
  display: block; margin-bottom: 6px;
  font-size: 13px; font-weight: 600; color: #334155;
  overflow-wrap: anywhere;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; max-width: 100%;
  font-size: 14px; padding: 10px 12px;
  border: 1px solid #d1d5db; border-radius: 10px;
  background: #fff;
  transition: box-shadow .2s, border-color .2s;
  outline: none;
}
.form-group textarea { min-height: 110px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(15,98,254,.12);
}
.form-group select { white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }

.help-text { font-size: 12px; color: var(--muted); margin-top: 6px; }
.help-text.small { font-size: 0.8rem; line-height: 1.4; }

.submit-btn {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
  padding: 12px 20px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(15,98,254,.18);
  transition: transform .05s ease, background .2s ease, box-shadow .2s ease;
  max-width: 100%;
}
.submit-btn:hover { background: var(--brand-600); }
.submit-btn:active { transform: translateY(1px); }

.center { text-align: center; }
.mt-16 { margin-top: 16px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

@media (max-width: 420px) {
  .form-container { padding: 20px; }
  .section { padding: 16px; }
  .grid-2 { gap: 10px; }
}