/* ============================================================
   Smart Device Handover Tracker — Stylesheet v1.1
   ============================================================ */

:root {
    --sdht-blue:      #2563eb;
    --sdht-blue-d:    #1d4ed8;
    --sdht-blue-l:    #dbeafe;
    --sdht-green:     #16a34a;
    --sdht-green-l:   #dcfce7;
    --sdht-red:       #dc2626;
    --sdht-red-l:     #fee2e2;
    --sdht-amber:     #d97706;
    --sdht-amber-l:   #fef3c7;
    --sdht-purple:    #7c3aed;
    --sdht-purple-l:  #ede9fe;
    --sdht-slate:     #1e293b;
    --sdht-slate-m:   #475569;
    --sdht-slate-l:   #94a3b8;
    --sdht-bg:        #f8fafc;
    --sdht-border:    #e2e8f0;
    --sdht-radius:    8px;
    --sdht-shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --sdht-shadow-lg: 0 10px 32px rgba(0,0,0,.14);
}

/* ── Admin wrap ──────────────────────────────────────────────── */
.sdht-admin-wrap { max-width: 1200px; padding: 0 8px; }

.sdht-admin-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    padding: 18px 24px;
    background: #fff;
    border: 1px solid var(--sdht-border);
    border-radius: var(--sdht-radius);
    box-shadow: var(--sdht-shadow);
}

.sdht-admin-header h1 {
    margin: 0;
    font-size: 1.35rem;
    color: var(--sdht-slate);
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.sdht-admin-header h1 .dashicons {
    color: var(--sdht-blue);
    font-size: 1.4rem;
    width: 1.4rem;
    height: 1.4rem;
}

.sdht-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.sdht-count-badge {
    background: var(--sdht-blue);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 600;
}

.sdht-export-btn {
    background: #fff !important;
    border-color: var(--sdht-green) !important;
    color: var(--sdht-green) !important;
    font-weight: 600 !important;
}
.sdht-export-btn:hover { background: var(--sdht-green-l) !important; }
.sdht-export-btn .dashicons { font-size: 1rem; width: 1rem; height: 1rem; margin-top: 2px; }

/* ── Cards ───────────────────────────────────────────────────── */
.sdht-card {
    background: #fff;
    border: 1px solid var(--sdht-border);
    border-radius: var(--sdht-radius);
    padding: 24px;
    box-shadow: var(--sdht-shadow);
}

.sdht-card h2 {
    margin: 0 0 20px;
    font-size: 1.05rem;
    color: var(--sdht-slate);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--sdht-border);
}

/* ── Tables ──────────────────────────────────────────────────── */
.sdht-table {
    border: 1px solid var(--sdht-border) !important;
    border-radius: var(--sdht-radius);
    overflow: hidden;
    box-shadow: var(--sdht-shadow);
}

.sdht-table thead th {
    background: var(--sdht-slate);
    color: #fff;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 11px 14px;
    border: none;
}

.sdht-table tbody tr { transition: background 0.1s; }
.sdht-table tbody tr:hover { background: #f0f4ff; }

.sdht-table tbody td {
    padding: 11px 14px;
    vertical-align: middle;
    border-bottom: 1px solid var(--sdht-border);
    font-size: 0.875rem;
    color: var(--sdht-slate-m);
}

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

.sdht-slug { color: var(--sdht-slate-l); font-family: monospace; font-size: 0.75rem; }

.sdht-device-link {
    font-size: 0.77rem;
    color: var(--sdht-blue);
    text-decoration: none;
    word-break: break-all;
}
.sdht-device-link:hover { text-decoration: underline; }

.sdht-action-btns { white-space: nowrap; }
.sdht-action-btns .button { margin-right: 3px; }

/* ── Badges ──────────────────────────────────────────────────── */
.sdht-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.sdht-badge-holder   { background: var(--sdht-blue-l);   color: var(--sdht-blue-d); }
.sdht-badge-office   { background: #f0fdf4; color: var(--sdht-green); border: 1px solid #bbf7d0; }
.sdht-badge-take     { background: var(--sdht-green-l);  color: var(--sdht-green); }
.sdht-badge-transfer { background: var(--sdht-amber-l);  color: var(--sdht-amber); }
.sdht-badge-admin    { background: var(--sdht-purple-l); color: var(--sdht-purple); }
.sdht-badge-reset    { background: #f1f5f9; color: var(--sdht-slate-m); border: 1px solid var(--sdht-border); }
.sdht-badge-return   { background: #ecfdf5; color: #065f46; border: 1px solid #6ee7b7; }

/* ── Return button ───────────────────────────────────────────── */
.sdht-btn-return {
    background: #fffbeb !important;
    border-color: var(--sdht-amber) !important;
    color: var(--sdht-amber) !important;
    font-weight: 600 !important;
}
.sdht-btn-return:hover { background: var(--sdht-amber-l) !important; }

/* ── Filter bar ──────────────────────────────────────────────── */
.sdht-filter-bar {
    background: #fff;
    border: 1px solid var(--sdht-border);
    border-radius: var(--sdht-radius);
    padding: 14px 18px;
    margin-bottom: 16px;
    box-shadow: var(--sdht-shadow);
}
.sdht-filter-bar form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px; }
.sdht-filter-bar label { display: flex; flex-direction: column; gap: 3px; font-size: 0.8rem; font-weight: 600; color: var(--sdht-slate-m); }
.sdht-filter-bar input, .sdht-filter-bar select {
    font-size: 0.875rem; padding: 5px 9px;
    border: 1px solid var(--sdht-border); border-radius: 4px;
    background: var(--sdht-bg); color: var(--sdht-slate); min-width: 140px;
}

/* ── Empty state ─────────────────────────────────────────────── */
.sdht-empty-state {
    text-align: center; padding: 60px 20px;
    color: var(--sdht-slate-l); background: #fff;
    border: 1px solid var(--sdht-border);
    border-radius: var(--sdht-radius); box-shadow: var(--sdht-shadow);
}
.sdht-empty-icon { font-size: 3rem !important; width: 3rem !important; height: 3rem !important; display: block; margin: 0 auto 16px; opacity: 0.3; }

/* ── Alerts ──────────────────────────────────────────────────── */
.sdht-alert-success, .sdht-alert-error {
    padding: 10px 16px; border-radius: 6px; margin-bottom: 12px;
    font-size: 0.875rem; font-weight: 500; display: none;
}
.sdht-alert-success { background: var(--sdht-green-l); color: var(--sdht-green); border: 1px solid #86efac; }
.sdht-alert-error   { background: var(--sdht-red-l);   color: var(--sdht-red);   border: 1px solid #fca5a5; }

/* ── Modals ──────────────────────────────────────────────────── */
.sdht-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.55); z-index: 99998;
}

.sdht-modal {
    position: fixed; inset: 0; z-index: 99999;
    display: flex; align-items: center; justify-content: center;
}

.sdht-modal-content {
    background: #fff; border-radius: 12px;
    box-shadow: var(--sdht-shadow-lg);
    width: 520px; max-width: 95vw; max-height: 90vh;
    overflow-y: auto;
    animation: sdhtSlideIn 0.2s ease;
}

.sdht-qr-modal-content { width: 380px; }

@keyframes sdhtSlideIn {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.sdht-modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 18px 22px; border-bottom: 1px solid var(--sdht-border);
}
.sdht-modal-header h2 { margin: 0; font-size: 1.05rem; color: var(--sdht-slate); }

.sdht-modal-close {
    background: none; border: none; font-size: 1.5rem;
    line-height: 1; cursor: pointer; color: var(--sdht-slate-l); padding: 0;
    transition: color 0.15s;
}
.sdht-modal-close:hover { color: var(--sdht-red); }

.sdht-modal-body { padding: 18px 22px; }
.sdht-modal-body .form-table th { padding: 11px 0; font-size: 0.86rem; color: var(--sdht-slate-m); width: 140px; }
.sdht-modal-body .form-table td { padding: 7px 0; }
.sdht-modal-body .regular-text  { width: 100%; }

.sdht-modal-device-label { margin: 0 0 16px; color: var(--sdht-slate-m); font-size: 0.9rem; }

.sdht-modal-footer {
    display: flex; justify-content: flex-end; gap: 8px;
    padding: 14px 22px; border-top: 1px solid var(--sdht-border);
    background: var(--sdht-bg); border-radius: 0 0 12px 12px;
}

/* ── Admin override notice ───────────────────────────────────── */
.sdht-admin-override-notice {
    display: flex; align-items: flex-start; gap: 8px;
    background: var(--sdht-amber-l); border: 1px solid #fcd34d;
    border-radius: 6px; padding: 10px 14px;
    font-size: 0.82rem; color: #92400e; margin-top: 12px;
}
.sdht-admin-override-notice .dashicons { font-size: 1rem; width: 1rem; height: 1rem; color: var(--sdht-amber); flex-shrink: 0; }

/* ── QR Code modal ───────────────────────────────────────────── */
#sdht-qr-container { display: flex; justify-content: center; padding: 16px 0; }
#sdht-qr-container canvas, #sdht-qr-container img {
    border: 3px solid var(--sdht-slate); border-radius: 8px; padding: 8px;
}
.sdht-qr-link-text { font-family: monospace; font-size: 0.72rem; color: var(--sdht-slate-l); word-break: break-all; margin: 8px 0 16px; }

/* ── Pagination ──────────────────────────────────────────────── */
.sdht-pagination { margin-top: 16px; text-align: right; }
.sdht-pagination .page-numbers {
    display: inline-block; padding: 5px 11px;
    border: 1px solid var(--sdht-border); border-radius: 4px;
    margin: 0 2px; font-size: 0.82rem; text-decoration: none;
    color: var(--sdht-blue); background: #fff; transition: all 0.15s;
}
.sdht-pagination .page-numbers.current { background: var(--sdht-blue); color: #fff; border-color: var(--sdht-blue); }
.sdht-pagination .page-numbers:hover:not(.current) { background: var(--sdht-bg); }

/* required asterisk */
.required { color: var(--sdht-red); }

/* ═══════════════════════════════════════════════════════════════
   FRONTEND — Scan page + Login form
   ═══════════════════════════════════════════════════════════════ */

.sdht-wrap {
    max-width: 540px;
    margin: 40px auto;
    padding: 0 16px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ── Login card ──────────────────────────────────────────────── */
.sdht-login-wrap { max-width: 440px; }

.sdht-login-card {
    background: #fff;
    border: 1px solid var(--sdht-border);
    border-radius: 16px;
    box-shadow: var(--sdht-shadow-lg);
    padding: 36px 36px 32px;
    text-align: center;
}

.sdht-login-icon {
    width: 64px; height: 64px;
    background: var(--sdht-blue-l);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px;
}

.sdht-login-icon svg {
    width: 30px; height: 30px;
    stroke: var(--sdht-blue);
}

.sdht-login-card h2 {
    margin: 0 0 6px;
    font-size: 1.35rem;
    color: var(--sdht-slate);
}

.sdht-login-subtitle {
    margin: 0 0 24px;
    font-size: 0.875rem;
    color: var(--sdht-slate-l);
    line-height: 1.5;
}

/* WordPress login form overrides */
.sdht-login-card #sdht-login-form { text-align: left; }

.sdht-login-card .login-username,
.sdht-login-card .login-password,
.sdht-login-card .login-remember {
    margin-bottom: 16px;
}

.sdht-login-card label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--sdht-slate-m);
    margin-bottom: 5px;
}

.sdht-login-card input[type="text"],
.sdht-login-card input[type="password"] {
    width: 100%;
    padding: 10px 13px;
    border: 1.5px solid var(--sdht-border);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--sdht-slate);
    background: var(--sdht-bg);
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.sdht-login-card input[type="text"]:focus,
.sdht-login-card input[type="password"]:focus {
    border-color: var(--sdht-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
    background: #fff;
}

.sdht-login-card .login-remember {
    display: flex;
    align-items: center;
    gap: 8px;
}
.sdht-login-card .login-remember label {
    margin: 0;
    font-weight: 500;
    cursor: pointer;
    font-size: 0.85rem;
}
.sdht-login-card .login-remember input[type="checkbox"] {
    width: auto;
    accent-color: var(--sdht-blue);
    cursor: pointer;
}

.sdht-login-card input[type="submit"] {
    width: 100%;
    padding: 11px 20px;
    background: var(--sdht-blue);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 4px;
}
.sdht-login-card input[type="submit"]:hover { background: var(--sdht-blue-d); }
.sdht-login-card input[type="submit"]:active { transform: scale(0.99); }

/* ── Loading spinner ─────────────────────────────────────────── */
.sdht-loading { text-align: center; padding: 60px 20px; }
.sdht-spinner {
    width: 52px; height: 52px;
    border: 4px solid var(--sdht-border);
    border-top-color: var(--sdht-blue);
    border-radius: 50%;
    animation: sdhtSpin 0.8s linear infinite;
    margin: 0 auto 20px;
}
@keyframes sdhtSpin { to { transform: rotate(360deg); } }

/* ── Result card ─────────────────────────────────────────────── */
#sdht-result {
    border-radius: 16px;
    padding: 32px 28px;
    text-align: center;
    box-shadow: var(--sdht-shadow-lg);
}

.sdht-result-success {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 2px solid #6ee7b7;
}
.sdht-result-error {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 2px solid #fca5a5;
}
.sdht-result-info {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border: 2px solid #93c5fd;
}

.sdht-result-icon {
    width: 64px; height: 64px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; margin: 0 auto 16px;
}
.sdht-result-success .sdht-result-icon { background: var(--sdht-green); color: #fff; }
.sdht-result-error   .sdht-result-icon { background: var(--sdht-red);   color: #fff; }
.sdht-result-info    .sdht-result-icon { background: var(--sdht-blue);  color: #fff; }

#sdht-result h2 { margin: 0 0 20px; font-size: 1.25rem; color: var(--sdht-slate); }

.sdht-result-details {
    background: rgba(255,255,255,0.72);
    border-radius: 10px; overflow: hidden; text-align: left;
    margin-bottom: 20px;
}

.sdht-detail-row {
    display: flex; justify-content: space-between;
    padding: 11px 16px; border-bottom: 1px solid rgba(0,0,0,.06); gap: 12px;
}
.sdht-detail-row:last-child { border-bottom: none; }

.sdht-detail-label {
    font-size: 0.78rem; font-weight: 600;
    color: var(--sdht-slate-l); text-transform: uppercase;
    letter-spacing: 0.04em; flex-shrink: 0;
}
.sdht-detail-value  { font-size: 0.875rem; color: var(--sdht-slate); font-weight: 500; text-align: right; }
.sdht-highlight     { color: var(--sdht-green); font-weight: 700; }

/* ── Redirect notice ─────────────────────────────────────────── */
.sdht-redirect-notice {
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.7); border-radius: 10px;
    padding: 14px 20px; font-size: 0.85rem; color: var(--sdht-slate-m);
    border: 1px solid rgba(0,0,0,.07);
}

.sdht-redirect-spinner {
    width: 20px; height: 20px;
    border: 2px solid rgba(0,0,0,.1);
    border-top-color: var(--sdht-blue);
    border-radius: 50%;
    animation: sdhtSpin 0.7s linear infinite;
}

.sdht-redirect-bar {
    width: 100%; height: 4px;
    background: rgba(0,0,0,.08);
    border-radius: 4px; overflow: hidden;
}

.sdht-redirect-progress {
    height: 100%;
    background: var(--sdht-blue);
    border-radius: 4px;
    width: 0%;
    animation: sdhtProgressFill linear forwards;
}

@keyframes sdhtProgressFill {
    from { width: 0%; }
    to   { width: 100%; }
}

/* ── Info card ───────────────────────────────────────────────── */
.sdht-info-card {
    background: #fff; border: 1px solid var(--sdht-border);
    border-radius: 12px; box-shadow: var(--sdht-shadow);
    padding: 32px 24px; text-align: center;
    color: var(--sdht-slate-m);
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 600px) {
    .sdht-admin-header   { flex-direction: column; align-items: flex-start; }
    .sdht-filter-bar form { flex-direction: column; align-items: flex-start; }
    .sdht-login-card     { padding: 28px 22px; }
    .sdht-detail-row     { flex-direction: column; gap: 3px; }
    .sdht-detail-value   { text-align: left; }
    .sdht-modal-content  {
        width: 100%; max-width: 100%;
        border-radius: 12px 12px 0 0;
        position: fixed; bottom: 0; left: 0; right: 0;
        max-height: 85vh;
    }
}

/* ══════════════════════════════════════════════════════════════
   SORTABLE COLUMN HEADERS
   ══════════════════════════════════════════════════════════════ */

.sdht-th-sort {
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    color: #fff !important;             /* Force white even when browsers override */
    transition: background 0.15s;
}

.sdht-th-sort:hover {
    background: #374151 !important;     /* Slightly lighter than sdht-slate on hover */
}

.sdht-th-sort:active {
    background: #111827 !important;
}

/* All th text must stay white */
.sdht-table thead th,
.sdht-table thead th a,
.sdht-th-sort,
.sdht-th-sort .sdht-sort-icon {
    color: #fff !important;
}

.sdht-sort-icon {
    display: inline-block;
    font-size: 0.72rem;
    margin-left: 4px;
    opacity: 0.85;
    min-width: 12px;
    color: #fff !important;
}

/* Active sorted column gets a subtle highlight */
.sdht-th-sort[data-sort-dir="asc"],
.sdht-th-sort[data-sort-dir="desc"] {
    background: #2d3a4a !important;
}

/* ══════════════════════════════════════════════════════════════
   DANGER / RESET ZONE (Settings page)
   ══════════════════════════════════════════════════════════════ */

.sdht-danger-card {
    border-color: #fca5a5 !important;
    border-width: 1.5px !important;
}

.sdht-danger-title {
    color: var(--sdht-red) !important;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sdht-danger-title .dashicons {
    color: var(--sdht-red);
    font-size: 1.2rem;
    width: 1.2rem;
    height: 1.2rem;
}

.sdht-danger-desc {
    color: var(--sdht-slate-m);
    font-size: 0.875rem;
    margin: -8px 0 20px;
    line-height: 1.5;
}

.sdht-reset-actions {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.sdht-reset-block {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
    background: #fff5f5;
    border: 1px solid #fecaca;
    border-radius: 8px;
}

.sdht-reset-block-info {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.sdht-reset-block-info > .dashicons {
    font-size: 1.5rem;
    width: 1.5rem;
    height: 1.5rem;
    color: var(--sdht-red);
    flex-shrink: 0;
    margin-top: 2px;
}

.sdht-reset-block-info strong {
    display: block;
    font-size: 0.9rem;
    color: var(--sdht-slate);
    margin-bottom: 2px;
}

.sdht-reset-block-info p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--sdht-slate-l);
    line-height: 1.4;
}

.sdht-reset-btn {
    background: #fff !important;
    border-color: var(--sdht-red) !important;
    color: var(--sdht-red) !important;
    font-weight: 600 !important;
    white-space: nowrap;
    flex-shrink: 0;
}

.sdht-reset-btn:hover {
    background: var(--sdht-red-l) !important;
}

.sdht-reset-btn .dashicons {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
    vertical-align: middle;
    margin-right: 2px;
}

@media (max-width: 700px) {
    .sdht-reset-block {
        flex-direction: column;
        align-items: flex-start;
    }
    .sdht-reset-btn { width: 100%; }
}

/* Delete-variant danger blocks (darker red) */
.sdht-reset-block--delete {
    background: #fef2f2;
    border-color: #f87171;
}

.sdht-delete-btn {
    border-color: #b91c1c !important;
    color: #b91c1c !important;
}
.sdht-delete-btn:hover {
    background: #fee2e2 !important;
}
.sdht-delete-btn .dashicons {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
    vertical-align: middle;
    margin-right: 2px;
}

/* ══════════════════════════════════════════════════════════════
   HOLDER TYPE TOGGLE (Internal / External)
   ══════════════════════════════════════════════════════════════ */

.sdht-holder-toggle {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    padding: 4px;
    background: var(--sdht-bg);
    border: 1px solid var(--sdht-border);
    border-radius: 8px;
}

.sdht-toggle-option {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 9px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sdht-slate-l);
    transition: all 0.15s;
    user-select: none;
}

.sdht-toggle-option input[type="radio"] {
    display: none;
}

.sdht-toggle-option .dashicons {
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
}

.sdht-toggle-option:hover {
    color: var(--sdht-slate-m);
    background: rgba(0,0,0,.04);
}

.sdht-toggle-active {
    background: #fff;
    color: var(--sdht-blue) !important;
    box-shadow: 0 1px 3px rgba(0,0,0,.1);
}

.sdht-toggle-active .dashicons {
    color: var(--sdht-blue);
}

/* External badge in table */
.sdht-badge-external {
    background: #fef9ec;
    color: #92400e;
    border: 1px solid #fcd34d;
}

/* ══════════════════════════════════════════════════════════════
   8-HOUR OVERDUE ALERT
   ══════════════════════════════════════════════════════════════ */

/* Overdue banner above the table */
.sdht-overdue-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff1f2;
    border: 1.5px solid #fca5a5;
    border-radius: 8px;
    padding: 12px 18px;
    margin-bottom: 18px;
    color: #991b1b;
    font-weight: 600;
    font-size: 0.9rem;
}
.sdht-overdue-banner .dashicons {
    color: #ef4444;
    font-size: 1.2rem;
    width: 1.2rem;
    height: 1.2rem;
    flex-shrink: 0;
}

/* Overdue table row — full red tint */
tr.sdht-row-overdue {
    background: #fff5f5 !important;
    border-left: 4px solid #ef4444 !important;
}
tr.sdht-row-overdue:hover {
    background: #fee2e2 !important;
}
tr.sdht-row-overdue td {
    border-bottom-color: #fecaca !important;
}

/* Warning icon before device name on overdue rows */
.sdht-overdue-icon {
    display: inline-block;
    margin-right: 5px;
    vertical-align: middle;
}
.sdht-overdue-icon .dashicons {
    color: #ef4444;
    font-size: 1rem;
    width: 1rem;
    height: 1rem;
    vertical-align: text-bottom;
}

/* Last Handover time text on overdue rows */
.sdht-overdue-time {
    color: #b91c1c;
    font-weight: 600;
    line-height: 1.4;
}
.sdht-overdue-time small {
    display: block;
    font-weight: 400;
    opacity: 0.85;
    font-size: 0.78rem;
}

/* ══════════════════════════════════════════════════════════════
   NOTES COLUMN
   ══════════════════════════════════════════════════════════════ */
.sdht-notes-cell {
    max-width: 200px;
}
.sdht-notes-text {
    color: #374151;
    font-size: 0.85rem;
    line-height: 1.5;
    cursor: default;
    display: block;
    white-space: pre-line;
    word-break: break-word;
}
.sdht-notes-empty {
    color: #9ca3af;
}

/* ══════════════════════════════════════════════════════════════
   SETTINGS TOGGLE SWITCH
   ══════════════════════════════════════════════════════════════ */
.sdht-toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    vertical-align: middle;
    margin-right: 8px;
}
.sdht-toggle-switch input { opacity: 0; width: 0; height: 0; }
.sdht-toggle-slider {
    position: absolute;
    inset: 0;
    background: #cbd5e1;
    border-radius: 24px;
    cursor: pointer;
    transition: background .2s;
}
.sdht-toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    left: 3px; bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: transform .2s;
    box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.sdht-toggle-switch input:checked + .sdht-toggle-slider { background: #2271b1; }
.sdht-toggle-switch input:checked + .sdht-toggle-slider::before { transform: translateX(20px); }

/* ══════════════════════════════════════════════════════════════
   CONFIRMED LOG BADGE
   ══════════════════════════════════════════════════════════════ */
.sdht-badge-confirmed {
    background: #d1fae5;
    color: #065f46;
}

/* ══════════════════════════════════════════════════════════════
   DIAGNOSTIC BOX
   ══════════════════════════════════════════════════════════════ */
.sdht-diag-box {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 14px;
    font-size: 13px;
}
.sdht-diag-box table th {
    color: #475569;
    font-weight: 600;
    padding: 4px 12px 4px 0;
    width: 260px;
}
.sdht-diag-box table td {
    padding: 4px 0;
}

/* ══════════════════════════════════════════════════════════════
   FRONTEND — RETURN TO OFFICE
   ══════════════════════════════════════════════════════════════ */
.sdht-return-wrap {
    margin-top: 4px;
    text-align: center;
}
.sdht-return-divider {
    border: none;
    border-top: 1px solid rgba(0,0,0,.09);
    margin: 18px 0 14px;
}
.sdht-return-hint {
    font-size: 0.82rem;
    color: var(--sdht-slate-m);
    margin: 0 0 10px;
    font-weight: 500;
}
.sdht-return-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    border: 2px solid var(--sdht-amber);
    color: var(--sdht-amber);
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: background .18s, color .18s;
    font-family: inherit;
    line-height: 1.4;
}
.sdht-return-btn:hover:not(:disabled) {
    background: var(--sdht-amber);
    color: #fff;
}
.sdht-return-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}
.sdht-return-note {
    font-size: 0.75rem;
    color: var(--sdht-slate-l);
    margin: 8px 0 0;
}
.sdht-return-msg-box {
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 10px;
}
.sdht-return-msg-success {
    background: var(--sdht-green-l);
    color: var(--sdht-green);
    border: 1px solid #6ee7b7;
}
.sdht-return-msg-error {
    background: var(--sdht-red-l);
    color: var(--sdht-red);
    border: 1px solid #fca5a5;
}

/* ══════════════════════════════════════════════════════════════
   ADMIN — RETURN REQUESTS PAGE
   ══════════════════════════════════════════════════════════════ */
.sdht-filter-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.sdht-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--sdht-slate-m);
    background: #fff;
    border: 1px solid var(--sdht-border);
    text-decoration: none;
    transition: background .15s, color .15s;
}
.sdht-tab:hover {
    background: var(--sdht-blue-l);
    color: var(--sdht-blue);
    border-color: var(--sdht-blue);
    text-decoration: none;
}
.sdht-tab-active {
    background: var(--sdht-blue);
    color: #fff !important;
    border-color: var(--sdht-blue);
}
.sdht-tab-count {
    background: rgba(0,0,0,.12);
    color: inherit;
    border-radius: 10px;
    padding: 1px 7px;
    font-size: 0.75rem;
}
.sdht-tab-active .sdht-tab-count {
    background: rgba(255,255,255,.25);
}

/* Return request status badges */
.sdht-badge-pending {
    background: var(--sdht-amber-l);
    color: var(--sdht-amber);
    border: 1px solid #fcd34d;
}
.sdht-badge-approved-req {
    background: var(--sdht-green-l);
    color: var(--sdht-green);
    border: 1px solid #6ee7b7;
}
.sdht-badge-rejected-req {
    background: var(--sdht-red-l);
    color: var(--sdht-red);
    border: 1px solid #fca5a5;
}

/* Approve / Reject buttons */
.sdht-approve-return {
    background: var(--sdht-green) !important;
    border-color: var(--sdht-green) !important;
    color: #fff !important;
    font-size: 12px !important;
    padding: 5px 10px !important;
    height: auto !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
}
.sdht-approve-return:hover {
    background: #15803d !important;
    border-color: #15803d !important;
}
.sdht-reject-return {
    font-size: 12px !important;
    padding: 5px 10px !important;
    height: auto !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
    color: var(--sdht-red) !important;
    border-color: var(--sdht-red) !important;
}
.sdht-reject-return:hover {
    background: var(--sdht-red-l) !important;
}