/* -------------------------------
   Variables & styles généraux
---------------------------------*/
:root {
  --bg-page: #0f172a;
  --bg-alt: #020617;
  --bg-card: #111827;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.1);
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --border-subtle: #1f2937;
  --danger: #f97373;
  --success: #4ade80;
  --radius-lg: 1.25rem;
  --radius-md: 0.75rem;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.8);
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.5);
  --transition-fast: 0.2s ease;
  --container-width: 900px;
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #0b1120, #020617 55%);
  color: var(--text-main);
}

body {
  min-height: 100vh;
}

/* -------------------------------
   Layout principal & header
---------------------------------*/

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: linear-gradient(to right, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.9));
  border-bottom: 1px solid rgba(15, 23, 42, 0.8);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-symbol {
  font-size: 1.4rem;
}

.logo-text {
  font-weight: 600;
  letter-spacing: 0.03em;
  font-size: 0.95rem;
  text-transform: uppercase;
  color: var(--text-main);
}

.main-nav {
  display: flex;
  gap: 1.4rem;
}

.main-nav a {
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--text-muted);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.main-nav a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}

/* -------------------------------
   Section principale inscription
---------------------------------*/

.page-inscription {
  padding: 3.5rem 0 3rem;
}

.page-title {
  text-align: center;
  margin-bottom: 2rem;
}

.page-title h1 {
  font-size: 1.8rem;
  margin: 0 0 0.6rem;
}

.page-title p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Wrapper général du formulaire */
.inscription-wrapper {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: flex-start;
}

/* Carte formulaire */
.inscription-card {
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.07), #020617);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.7rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(30, 64, 175, 0.6);
}

/* Bloc d’infos sur la droite */
.inscription-info {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.3rem;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
}

.inscription-info h2 {
  margin: 0 0 0.9rem;
  font-size: 1.2rem;
}

.inscription-info p {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.inscription-info ul {
  list-style: none;
  padding: 0;
  margin: 0.6rem 0 0;
}

.inscription-info li {
  font-size: 0.9rem;
  color: var(--text-main);
  padding-left: 1.1rem;
  position: relative;
  margin-bottom: 0.35rem;
}

.inscription-info li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0.05rem;
  color: var(--accent);
}

/* -------------------------------
   Formulaire
---------------------------------*/

.form-title {
  font-size: 1.3rem;
  margin: 0 0 0.3rem;
}

.form-subtitle {
  margin: 0 0 1.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* organisation des champs */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 1.2rem;
  row-gap: 1rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.form-row-full {
  grid-column: 1 / -1;
}

/* Labels */
label {
  font-size: 0.9rem;
  color: var(--text-main);
}

/* Inputs, selects, textarea */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.55rem 0.8rem;
  border-radius: 0.6rem;
  border: 1px solid rgba(30, 64, 175, 0.7);
  background: rgba(15, 23, 42, 0.95);
  color: var(--text-main);
  font-size: 0.92rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

/* Focus & hover */
input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.35);
  background: rgba(15, 23, 42, 1);
}

/* Placeholder */
::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

/* Champs en erreur */
.form-row.error input,
.form-row.error select,
.form-row.error textarea {
  border-color: var(--danger);
}

.form-row.error .field-error {
  color: var(--danger);
  font-size: 0.78rem;
}

/* Aide sous les champs */
.field-help {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Cases à cocher & radio */
.checkbox-row,
.radio-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  accent-color: #38bdf8; /* moderne : colorisation des cases */
}

/* -------------------------------
   Boutons & actions
---------------------------------*/

.form-actions {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, #38bdf8, #0ea5e9);
  color: #0b1120;
  font-weight: 600;
  box-shadow: 0 16px 30px rgba(56, 189, 248, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 40px rgba(56, 189, 248, 0.35);
}

.btn-secondary {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.5);
  color: var(--text-main);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background: rgba(15, 23, 42, 0.85);
}

/* Petit texte sous formulaire (obligatoires, RGPD, etc.) */
.form-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* -------------------------------
   Alertes (succès / erreur)
---------------------------------*/

.alert {
  margin-bottom: 1.1rem;
  padding: 0.7rem 0.9rem;
  border-radius: 0.7rem;
  font-size: 0.88rem;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.alert-icon {
  font-size: 1rem;
  line-height: 1;
}

.alert-success {
  background: rgba(22, 163, 74, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.6);
  color: var(--success);
}

.alert-error {
  background: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.7);
  color: var(--danger);
}

.alert-info {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.6);
  color: var(--accent);
}

/* -------------------------------
   Badges / tags (promotion, filière, etc.)
---------------------------------*/

.tag-list {
  margin-top: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  font-size: 0.78rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: var(--text-muted);
  background: rgba(15, 23, 42, 0.95);
}

/* -------------------------------
   Footer
---------------------------------*/

.site-footer {
  border-top: 1px solid rgba(15, 23, 42, 0.8);
  background: #020617;
  padding: 1.2rem 0 1.5rem;
  margin-top: 3rem;
}

.footer-content {
  text-align: center;
}

.footer-content p {
  margin: 0.1rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* -------------------------------
   Responsive
---------------------------------*/

@media (max-width: 900px) {
  .inscription-wrapper {
    grid-template-columns: minmax(0, 1fr);
  }

  .inscription-info {
    order: -1;
  }

  .main-nav {
    display: none; /* comme sur index : simple pour l’instant */
  }

  .page-inscription {
    padding-top: 3rem;
  }
}

@media (max-width: 600px) {
  .form-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .inscription-card {
    padding: 1.4rem 1.2rem;
  }
}