/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

/* === Layout === */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px;
}

/* === Header === */
.header {
    text-align: center;
    padding: 40px 0 20px;
}

.header h1 {
    font-size: 1.8rem;
    color: #1a1a2e;
    margin-bottom: 8px;
}

.subtitle {
    color: #666;
    font-size: 1.05rem;
}

/* === Sections du formulaire === */
.form-section {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.form-section h2 {
    font-size: 1.15rem;
    color: #1a1a2e;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

/* === Grille des formations === */
.formations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
}

.formation-card {
    display: block;
    cursor: pointer;
}

.formation-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.card-content {
    display: flex;
    flex-direction: column;
    padding: 18px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
}

.card-content:hover {
    border-color: #0070ba;
    background-color: #f8fbff;
}

.formation-card input[type="radio"]:checked + .card-content {
    border-color: #0070ba;
    background-color: #eef6ff;
    box-shadow: 0 0 0 1px #0070ba;
}

.formation-name {
    font-weight: 600;
    font-size: 1.05rem;
    color: #1a1a2e;
    margin-bottom: 4px;
}

.formation-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: #0070ba;
}

.pay-later-hint {
    font-size: 0.82rem;
    color: #888;
    margin-top: 4px;
}

/* === Champs du formulaire === */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.95rem;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
    outline: none;
}

.form-group input:focus {
    border-color: #0070ba;
}

.form-group input::placeholder {
    color: #aaa;
}

/* === Zone de paiement === */
.amount-display {
    background: #f0f7ff;
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.amount-display strong {
    color: #0070ba;
    font-size: 1.3rem;
}

.paypal-buttons {
    max-width: 500px;
    margin: 0 auto 16px;
    min-height: 50px;
}

.payment-info {
    text-align: center;
    font-size: 0.85rem;
    color: #888;
}

/* === Messages d'erreur === */
.error-message {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #cf1322;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.95rem;
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 30px 0;
    color: #999;
    font-size: 0.85rem;
}

/* === Page de confirmation === */
.success-page {
    text-align: center;
    padding: 60px 20px;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: block;
}

.success-page h1 {
    color: #52c41a;
    font-size: 1.6rem;
    margin-bottom: 12px;
}

.success-details {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    margin: 24px auto;
    max-width: 400px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    text-align: left;
}

.success-details dt {
    font-weight: 600;
    color: #666;
    font-size: 0.85rem;
    margin-top: 12px;
}

.success-details dt:first-child {
    margin-top: 0;
}

.success-details dd {
    font-size: 1.05rem;
    color: #333;
    margin-bottom: 4px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: background-color 0.2s;
}

.btn-primary {
    background: #0070ba;
    color: #fff;
}

.btn-primary:hover {
    background: #005ea6;
}

/* === Admin === */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.admin-header h1 {
    font-size: 1.4rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: #fff;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 4px;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a2e;
}

.filters-bar {
    background: #fff;
    border-radius: 10px;
    padding: 16px 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
}

.filters-bar .filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.filters-bar label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #666;
}

.filters-bar select,
.filters-bar input[type="date"] {
    padding: 8px 10px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.9rem;
}

.filters-bar .btn {
    padding: 8px 18px;
    font-size: 0.9rem;
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th {
    background: #fafafa;
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    color: #666;
    border-bottom: 2px solid #f0f0f0;
    white-space: nowrap;
}

.data-table td {
    padding: 12px 14px;
    border-bottom: 1px solid #f5f5f5;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.78rem;
    font-weight: 600;
}

.badge-completed {
    background: #f6ffed;
    color: #52c41a;
}

.badge-created {
    background: #e6f7ff;
    color: #1890ff;
}

.badge-failed {
    background: #fff2f0;
    color: #ff4d4f;
}

/* Login page */
.login-container {
    max-width: 380px;
    margin: 80px auto;
    padding: 0 20px;
}

.login-box {
    background: #fff;
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.login-box h1 {
    text-align: center;
    font-size: 1.3rem;
    margin-bottom: 24px;
    color: #1a1a2e;
}

.login-box .form-group {
    margin-bottom: 20px;
}

.login-box .btn {
    width: 100%;
    text-align: center;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.login-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #cf1322;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    text-align: center;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: #999;
}

/* === Responsive === */
@media (max-width: 600px) {
    .container {
        padding: 12px;
    }

    .header {
        padding: 24px 0 12px;
    }

    .header h1 {
        font-size: 1.4rem;
    }

    .form-section {
        padding: 20px;
    }

    .formations-grid {
        grid-template-columns: 1fr;
    }

    .admin-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .filters-bar {
        flex-direction: column;
    }
}