/* ======================
   Variables globales
   ====================== */
:root {
  --clr-bg: #f2f4f7;
  --clr-card: #ffffff;
  --clr-primary: #4f46e5;      /* un indigo doux */
  --clr-primary-light: #6366f1;
  --clr-text: #1f2937;
  --clr-border: #e5e7eb;
  --radius: 8px;
  --spacing: 1rem;
  --transition: 0.3s ease;
}

/* ======================
   Reset minimal
   ====================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background: var(--clr-bg);
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--clr-text);
  line-height: 1.6;
  padding: calc(var(--spacing) * 2);
}

/* ======================
   Container & Card
   ====================== */
.form-container {
  max-width: 700px;
  margin: 0 auto;
  background: var(--clr-card);
  border-radius: var(--radius);
  box-shadow: 0 10px 25px rgba(0,0,0,0.05);
  overflow: hidden; /* pour border-radius sur tous les enfants */
}
.form-title {
  background: var(--clr-primary);
  color: #fff;
  text-align: center;
  padding: var(--spacing);
  font-size: 1.75rem;
  font-weight: 600;
}
.form-grid {
  padding: var(--spacing);
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing) * 1.5);
}

/* ======================
   Fieldset & Legend
   ====================== */
fieldset {
  border: none;
  margin: 0;
  padding: 0;
}
legend {
  font-size: 1.25rem;
  margin-bottom: var(--spacing);
  font-weight: 500;
  position: relative;
  padding-bottom: 0.5rem;
}
legend::after {
  content: "";
  display: block;
  width: 50px;
  height: 3px;
  background: var(--clr-primary);
  margin-top: 0.25rem;
  border-radius: var(--radius);
}

/* ======================
   Grille de champs
   ====================== */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing);
}

/* ======================
   Groupes label + champ
   ====================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
label {
  font-weight: 500;
}
input[type="text"],
input[type="email"],
input[type="date"] {
  padding: 0.75rem 1rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.25);
}

/* ======================
   Actions & Boutons
   ====================== */
.form-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing);
  padding: var(--spacing) 0 var(--spacing);
  border-top: 1px solid var(--clr-border);
}
button {
  padding: 0.75rem 2rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}
.btn-primary {
  background-color: var(--clr-primary);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--clr-primary-light);
  transform: translateY(-2px);
}
.btn-secondary {
  background-color: #fff;
  color: var(--clr-primary);
  border: 1px solid var(--clr-primary);
}
.btn-secondary:hover {
  background-color: var(--clr-border);
}

/* ======================
   Alertes
   ====================== */
.alert {
  padding: var(--spacing);
  border-radius: var(--radius);
  margin-bottom: var(--spacing);
  font-weight: 500;
}
.alert.success {
  background: #daf5e7;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* ======================
   Responsive tweaks
   ====================== */
@media (max-width: 600px) {
  .form-title {
    font-size: 1.5rem;
  }
  .form-actions {
    flex-direction: column;
  }
  button {
    width: 100%;
  }
}
/* ======================
   Antispam
   ====================== */
.hidden-honeypot {
  position: absolute;
  left: -9999px;
  top: -9999px;
  visibility: hidden;
}