:root {
  /* Palette Dataconforme (proposée) */
  --bg: #f4f7fb;
  --card-bg: #ffffff;
  --text: #0b2536; /* texte principal légèrement plus sombre */
  --muted: #6b7280;
  --accent: #0066cc; /* couleur principale Dataconforme */
  --accent-hover: #005bb5;
  --border: #e6eefb;
  --danger: #dc2626;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}

.card {
  width: min(780px, 100%);
  background: var(--card-bg);
  border-radius: 18px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  max-height: unset;
  overflow: hidden;
}

.card-header {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: center;
  text-align: center;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem; /* espace entre logo et titre (légèrement augmenté) */
}

.brand-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
}

.brand-logo {
  width: min(360px, 70%); /* agrandi */
  max-width: 360px;
  height: auto;
  display: block;
}

.brand-name {
  font-weight: 700;
  color: var(--accent);
  font-size: 0.98rem;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.card-header h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3.8vw, 2.1rem);
}

.card-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  max-width: 56ch;
}

.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.1rem;
}

.field label {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.muted {
  color: var(--muted);
  font-weight: 400;
}

input,
textarea {
  font: inherit;
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #f9fafb;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background: #ffffff;
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.error {
  color: var(--danger);
  font-size: 0.83rem;
  margin-top: 0.3rem;
  min-height: 1em;
}

.field.has-error input,
.field.has-error textarea,
.field.has-error select {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
  background: #fff5f5;
}

.field.has-error .consent-checkbox {
  color: var(--danger);
}

.field-note {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.consent-field {
  align-items: flex-start;
}

.consent-checkbox {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-weight: 500;
  cursor: pointer;
  color: var(--text);
}

.consent-checkbox input[type="checkbox"] {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.2rem;
}

.consent-checkbox span {
  line-height: 1.5;
}

.form-section {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  background: #f9fafc;
}

.form-section legend {
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0 0.4rem;
  margin-left: -0.4rem;
}

.section-note {
  margin: 0.4rem 0 1.2rem;
  color: var(--muted);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.option-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.option-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 0.4rem;
}

.option-grid label,
.option-row label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text);
}

.field-label {
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.other-input,
.conditional-textarea,
.conditional-field {
  display: none;
}

.other-input.is-visible,
.conditional-textarea.is-visible,
.conditional-field.is-visible {
  display: block;
}

.conditional-textarea {
  resize: vertical;
}

.subsection-title {
  margin: 1.4rem 0 0.9rem;
  font-size: 1rem;
  color: var(--text);
}

.submit-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.5rem;
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
  min-width: 18rem;
}

.submit-btn:hover {
  background: var(--accent-hover);
}

.submit-btn:disabled {
  cursor: progress;
  background: var(--accent-hover);
  opacity: 0.85;
}

.spinner {
  display: none;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.55);
  border-top-color: #fff;
  animation: spin 0.9s linear infinite;
}

.submit-btn.busy .btn-label {
  opacity: 0.75;
}

.submit-btn.busy .spinner {
  display: inline-block;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.form-status {
  margin-top: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.4;
  color: var(--muted);
}

.form-status.success {
  color: #047857;
}

.form-status.error {
  color: var(--danger);
}

.site-footer {
  text-align: center;
  padding: 2rem 1rem 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

input[type="file"] {
  font: inherit;
}

@media (max-width: 1080px) {
  .card {
    padding: 2rem 1.5rem;
  }

  .card-header p {
    font-size: 0.95rem;
  }

  .submit-btn {
    width: 100%;
  }

  .form-section {
    padding: 1.25rem;
  }

  .field-grid {
    grid-template-columns: 1fr;
  }
}