/* ============================================================
 * MODAL SYSTEM
 * ============================================================ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1050;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: modalFadeIn 0.15s ease-out;
    will-change: opacity;
}

.modal-overlay.active {
    display: flex !important;
}

.modal-level-1 {
    z-index: 1050;
}

.modal-level-2 {
    z-index: 1060;
}

.modal-level-3 {
    z-index: 1070;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 580px;
    max-height: 85vh;
    overflow-y: auto;
    animation: modalSlideUp 0.2s ease-out;
    will-change: transform, opacity;
}

.modal-box.ftg-dropdown-active {
    overflow: visible;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-overlay .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1.25rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: 1;
}

.modal-overlay .modal-header h3 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.modal-overlay .modal-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1rem;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.modal-overlay .modal-close:hover {
    background: var(--color-error);
    color: white;
}

.modal-overlay .modal-body {
    padding: 1.25rem;
    font-size: 13px;
}

.modal-overlay .modal-body .form-group {
    margin-bottom: 0.5rem;
}

.modal-overlay .modal-body .form-group:last-child {
    margin-bottom: 0;
}

/* form-row kế thừa từ base .form-row */
.modal-overlay .modal-body .form-row {
    margin-bottom: 0.5rem;
}

.modal-overlay .modal-body .form-row .form-group {
    flex: 1;
}

.modal-overlay .modal-body label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.modal-overlay .modal-body label small {
    text-transform: none;
    letter-spacing: normal;
    font-weight: 400;
}

.modal-overlay .modal-body input,
.modal-overlay .modal-body textarea,
.modal-overlay .modal-body .sys-select {
    width: 100%;
}

.modal-overlay .modal-body .btn-primary {
    width: 100%;
    margin-top: 0.75rem;
    padding: 0.7rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 13px;
}

.modal-overlay .modal-body .btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Nhãn checkbox modal */
.modal-checkbox-label {
    display: inline-flex !important;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500 !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    font-size: 13px !important;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background: rgba(255, 193, 7, 0.06);
    border: 1px solid rgba(255, 193, 7, 0.18);
    transition: background 0.15s ease, border-color 0.15s ease;
}

.modal-checkbox-label:hover {
    background: rgba(255, 193, 7, 0.12);
    border-color: rgba(255, 193, 7, 0.3);
}

.modal-checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-warning);
    cursor: pointer;
}

/* Thẻ radio — thẻ tuỳ chọn có mô tả */
.radio-card {
    display: flex !important;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    margin-bottom: 6px;
    transition: background 0.15s ease, border-color 0.15s ease;
    font-weight: 400 !important;
}

.radio-card:last-child {
    margin-bottom: 0;
}

.radio-card:hover {
    border-color: var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 4%, var(--bg-tertiary));
}

.radio-card:has(input:checked) {
    border-color: var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 6%, var(--bg-tertiary));
}

.radio-card input[type="radio"] {
    width: 16px;
    height: 16px;
    min-width: 16px;
    flex-shrink: 0;
    accent-color: var(--color-primary);
    cursor: pointer;
    margin: 0;
}

.radio-card strong {
    font-size: 13px;
}

.radio-card small {
    display: block;
    color: var(--text-tertiary);
    font-size: 12px;
    margin-top: 2px;
}

/* Toggle ô nhập modal (icon mắt cho mật khẩu) */
.modal-input-toggle {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    font-size: 14px;
    transition: color 0.15s ease;
}

.modal-input-toggle:hover {
    color: var(--text-primary);
}

.modal-overlay .modal-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border-primary);
    background: var(--bg-secondary);
    position: sticky;
    bottom: 0;
    z-index: 1;
}

/* Thẻ Dashboard */
/* Lưới trên cùng Tổng quan — Dung lượng R2 + Gói */
.overview-top-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.dash-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-sm);
    overflow-wrap: break-word;
    word-break: break-word;
}

.dash-card h3 {
    color: var(--color-primary);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.dash-card p {
    margin-bottom: 0.4rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.dash-card p strong {
    color: var(--text-primary);
}

/* Thông tin thẻ QR nạp tiền */
.dep-qr-info {
    margin-top: 8px;
    font-size: 12px;
    text-align: left;
    display: inline-block;
}

.dep-qr-info div {
    margin-bottom: 2px;
}

/* Đầu thẻ R2 */
.r2-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.r2-card-name {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.r2-card-name>span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.r2-card-storage {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 4px;
    flex-shrink: 0;
    white-space: nowrap;
}

.r2-actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: center;
}

.r2-reorder-group {
    display: inline-flex;
    gap: 0.15rem;
    margin-right: 0.3rem;
    padding-right: 0.5rem;
    border-right: 1px solid var(--border-primary);
}

.r2-reorder-group .btn[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}


/* Bảng quản trị */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.admin-table thead th {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.6rem 0.7rem;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
    border-bottom: 2px solid var(--border-primary);
}

.admin-table tbody td {
    padding: 0.55rem 0.7rem;
    border-bottom: 1px solid var(--border-primary);
    color: var(--text-secondary);
    vertical-align: middle;
}

.admin-table tbody tr:hover {
    background: var(--bg-tertiary);
}

.admin-table code {
    background: var(--bg-tertiary);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-primary);
}

/* Ghi đè kích thước nút nhỏ */

/* Lưới gói dịch vụ */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.plan-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    flex-direction: column;
    position: relative;
}

.plan-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.plan-card.plan-current {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 193, 7, 0.15);
}

.plan-card h3 {
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.plan-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.plan-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.plan-features {
    list-style: none;
    padding: 0;
    text-align: left;
    margin-bottom: 1rem;
}

.plan-features li {
    padding: 0.35rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-primary);
}

.plan-note {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

/* Huy hiệu gói */
.plan-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
}

.plan-admin {
    background: rgba(255, 193, 7, 0.15);
    color: var(--color-primary);
}

.plan-expired {
    background: rgba(248, 113, 113, 0.15);
    color: var(--color-error);
}

.plan-expired a {
    color: var(--color-error);
    text-decoration: underline;
}

/* Thanh sử dụng */

/* Dòng form (2 cột) */
.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 180px;
}

/* Trạng thái nhật ký */

/* ============================================================
 * RESPONSIVE — Modal
 * ============================================================ */
@media (max-width: 900px) {
    .modal-box {
        max-width: 100%;
        max-height: 90vh;
    }
}