:root {
  --mx-color-primary: #0f2e8a;
  --mx-color-primary-soft: #338ccc;
  --mx-color-bg: #edf1f7;
  --mx-color-surface: #ffffff;
  --mx-color-border: #cbd4e6;
  --mx-color-text: #111827;
  --mx-color-muted: #6b7280;
  --mx-color-error: #b91c1c;
  --mx-color-success: #15803d;
  --mx-radius-sm: 0.4rem;
  --mx-radius-md: 0.8rem;
  --mx-radius-lg: 1.2rem;
  --mx-shadow-soft: 0 18px 45px rgba(15, 46, 138, 0.16);
  --mx-shadow-focus: 0 0 0 2px rgba(51, 140, 204, 0.35);
  --mx-font-size-base: 16px;
  --mx-transition: 180ms ease-out;
}

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

html {
  font-size: var(--mx-font-size-base);
}

body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #ffffff 0, var(--mx-color-bg) 45%, #dde4f3 100%);
  color: var(--mx-color-text);
}

.mx-page {
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 1.5rem 1rem;
}

.mx-contact {
  width: 100%;
  max-width: 760px;
  margin: auto;
  background: linear-gradient(135deg, rgba(15, 46, 138, 0.03), rgba(51, 140, 204, 0.02));
  border-radius: var(--mx-radius-lg);
  box-shadow: var(--mx-shadow-soft);
  padding: 1.75rem 1.5rem 1.9rem;
  border: 1px solid rgba(15, 46, 138, 0.08);
  backdrop-filter: blur(12px);
}

.mx-contact-header h1 {
  font-size: 1.35rem;
  margin: 0 0 0.5rem;
  color: var(--mx-color-primary);
  letter-spacing: 0.03em;
}

.mx-contact-header p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--mx-color-muted);
}

.mx-form {
  margin-top: 1.4rem;
}

.mx-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.mx-field {
  margin-bottom: 0.9rem;
}

.mx-field label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  font-weight: 500;
  color: var(--mx-color-text);
}

.mx-field input,
.mx-field select,
.mx-field textarea {
  width: 100%;
  border-radius: var(--mx-radius-sm);
  border: 1px solid var(--mx-color-border);
  padding: 0.6rem 0.75rem;
  font-size: 0.95rem;
  background-color: var(--mx-color-surface);
  color: var(--mx-color-text);
  transition: border-color var(--mx-transition), box-shadow var(--mx-transition), background-color var(--mx-transition);
}

.mx-field input:focus,
.mx-field select:focus,
.mx-field textarea:focus {
  outline: none;
  border-color: var(--mx-color-primary-soft);
  box-shadow: var(--mx-shadow-focus);
  background-color: #f9fbff;
}

.mx-field input::placeholder,
.mx-field textarea::placeholder {
  color: #9ca3af;
}

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

.mx-field-hidden {
  position: absolute;
  left: -9999px;
  top: -9999px;
  visibility: hidden;
}

/* Checkboxes / fieldsets */

.mx-fieldset {
  margin: 1.1rem 0 0.8rem;
  padding: 0.85rem 0.9rem;
  border-radius: var(--mx-radius-md);
  border: 1px solid rgba(15, 46, 138, 0.18);
  background: rgba(255, 255, 255, 0.85);
}

.mx-fieldset legend {
  padding: 0 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--mx-color-primary);
}

.mx-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin-top: 0.65rem;
}

.mx-checkbox input[type="checkbox"] {
  margin-top: 0.2rem;
  cursor: pointer;
}

.mx-checkbox label {
  font-size: 0.9rem;
  color: var(--mx-color-text);
  cursor: pointer;
}

.mx-checkbox a {
  color: var(--mx-color-primary-soft);
  text-decoration: underline;
}

.mx-checkbox a:hover {
  text-decoration: none;
}

/* Messages d’erreur / succès */

.mx-error {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: var(--mx-color-error);
}

.mx-alert {
  border-radius: var(--mx-radius-sm);
  padding: 0.7rem 0.9rem;
  font-size: 0.9rem;
  margin-top: 1rem;
}

.mx-alert-error {
  background: #fef2f2;
  color: #7f1d1d;
  border: 1px solid #fecaca;
}

.mx-alert-success {
  background: #ecfdf3;
  color: #14532d;
  border: 1px solid #bbf7d0;
}

/* Bouton */

.mx-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background-image: linear-gradient(135deg, var(--mx-color-primary), var(--mx-color-primary-soft));
  color: #ffffff;
  box-shadow: 0 14px 30px rgba(15, 46, 138, 0.35);
  transition: transform var(--mx-transition), box-shadow var(--mx-transition), filter var(--mx-transition);
}

.mx-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 18px 40px rgba(15, 46, 138, 0.45);
}

.mx-button:active {
  transform: translateY(0);
  box-shadow: 0 8px 18px rgba(15, 46, 138, 0.4);
}

.mx-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

/* Texte légal / hint */

.mx-legal {
  margin: 0.6rem 0 0;
  font-size: 0.8rem;
  color: var(--mx-color-muted);
}

.mx-hint {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--mx-color-muted);
}

/* Responsive */

@media (min-width: 640px) {
  .mx-contact {
    padding: 2.1rem 2.2rem 2.3rem;
  }

  .mx-contact-header h1 {
    font-size: 1.6rem;
  }

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

@media (min-width: 960px) {
  .mx-page {
    padding: 2.5rem;
  }
}