body {
  font-family: "Segoe UI", Arial, sans-serif;
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1rem;
  color: #1a1a2e;
  background: #f7f7fb;
}

h1, h2 {
  color: #000080;
}

nav {
  margin-bottom: 1.5rem;
}

nav a {
  margin-right: 1rem;
  color: #000080;
  font-weight: 600;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

.carte {
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-top: 1rem;
  font-weight: 600;
}

input, select, button {
  font-size: 1rem;
  padding: 0.5rem;
  margin-top: 0.25rem;
}

button {
  background: #000080;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  padding: 0.6rem 1.2rem;
  margin-top: 1rem;
}

button:hover {
  background: #0000b3;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.9rem;
}

th, td {
  border: 1px solid #ddd;
  padding: 0.4rem 0.5rem;
  text-align: left;
}

th {
  background: #000080;
  color: white;
}

.erreur {
  background: #f8d7da;
  color: #721c24;
  padding: 0.75rem;
  border-radius: 4px;
  margin-top: 1rem;
}

.bouton-discret {
  background: none;
  color: #721c24;
  border: 1px solid #721c24;
  padding: 0.3rem 0.6rem;
  font-size: 0.85rem;
  margin: 0;
}

.centre-connexion {
  max-width: 320px;
  margin: 6rem auto;
}