/* ── Payment pages ── */
.payment-page {
    background: var(--bg);
    min-height: 100vh;
}

.payment-page .nav-links {
    display: flex;
}

.payment-main {
    padding: calc(var(--header-h) + 40px) 0 64px;
    min-height: calc(100vh - 120px);
}

.payment-container {
    max-width: 520px;
}

.payment-card,
.gateway-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    box-shadow: var(--shadow-md);
}

.payment-header {
    text-align: center;
    margin-bottom: 28px;
}

.payment-header h1 {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 12px 0 8px;
}

.payment-header p {
    color: var(--text-secondary);
    font-size: .95rem;
}

.payment-summary {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
}

.payment-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    padding: 10px 0;
    font-size: .9rem;
    border-bottom: 1px solid var(--border);
}

.payment-summary-row:last-child {
    border-bottom: none;
}

.payment-summary-row span:first-child {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.payment-summary-row strong {
    text-align: left;
    font-weight: 700;
}

.payment-summary-total {
    padding-top: 14px;
    margin-top: 4px;
    border-top: 2px solid var(--primary-light);
    border-bottom: none;
}

.payment-summary-total strong {
    color: var(--primary);
    font-size: 1.05rem;
}

.payment-muted {
    font-size: .85rem;
    color: var(--text-secondary);
    text-align: left;
    line-height: 1.5;
}

.payment-form .form-group {
    margin-bottom: 16px;
}

.payment-form label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}

.payment-form input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: .95rem;
    background: var(--surface);
    transition: border-color .2s;
}

.payment-form input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 107, 60, .12);
}

.payment-note {
    margin-top: 20px;
    font-size: .8rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.7;
}

.payment-alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 20px;
    font-size: .85rem;
}

.payment-alert--error {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #991B1B;
}

.payment-alert ul {
    list-style: none;
}

/* ── Gateway mock ── */
.gateway-card {
    max-width: 480px;
    margin: 0 auto;
}

.gateway-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.gateway-header h1 {
    font-size: 1.1rem;
    font-weight: 800;
}

.gateway-header p {
    font-size: .8rem;
    color: var(--text-secondary);
}

.gateway-merchant {
    background: var(--primary-light);
    color: var(--primary);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: .85rem;
    margin-bottom: 20px;
}

.gateway-merchant strong {
    display: block;
    margin-top: 4px;
}

.gateway-summary {
    margin-bottom: 20px;
}

.gateway-form input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: .95rem;
    background: #f9fafb;
    color: var(--text-secondary);
}

.gateway-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.gateway-form .form-group {
    margin-bottom: 14px;
}

.gateway-form label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.gateway-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 8px;
}

.gateway-note {
    border-top: 1px dashed var(--border);
    padding-top: 16px;
}

/* ── Result pages ── */
.payment-result {
    text-align: center;
}

.payment-result-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 800;
    margin: 0 auto 20px;
}

.payment-result--success .payment-result-icon {
    background: var(--primary-light);
    color: var(--primary);
}

.payment-result--failed .payment-result-icon {
    background: #FEF2F2;
    color: #DC2626;
}

.payment-result h1 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.payment-result > p {
    color: var(--text-secondary);
    font-size: .95rem;
    margin-bottom: 24px;
}

.payment-result .payment-summary {
    text-align: right;
}

.payment-result-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 24px;
}

@media (max-width: 640px) {
    .payment-card,
    .gateway-card {
        padding: 24px 18px;
    }

    .payment-summary-row {
        flex-direction: column;
        gap: 4px;
    }

    .payment-summary-row strong {
        text-align: right;
    }
}