/* --- Style général du formulaire --- */
.biplace-form {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
}

/* --- Titre --- */
.biplace-title {
    text-align: center;
    font-size: 1.6em;
    margin-bottom: 25px;
    color: #1a73e8;
}

/* --- Grille de cartes --- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}

/* --- Cartes individuelles --- */
.form-card {
    background: #fff;
    padding: 15px 18px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
}

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

/* --- Labels et champs --- */
.form-card label {
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.95em;
}

.form-card input,
.form-card select,
.form-card textarea {
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 0.95em;
    transition: border-color 0.2s;
}

.form-card input:focus,
.form-card select:focus,
.form-card textarea:focus {
    border-color: #1a73e8;
    outline: none;
}

/* --- Boutons --- */
.form-actions {
    margin-top: 20px;
    text-align: center;
}

.form-actions button {
    background: #1a73e8;
    color: #fff;
    padding: 10px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.form-actions button:hover {
    background: #155ab6;
    transform: translateY(-2px);
}

/* --- Message de réponse --- */
#biplace-form-response {
    margin-top: 15px;
    font-weight: 600;
    text-align: center;
}

/* --- Responsive mobile --- */
@media (max-width: 500px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}