:root {
    --ui-font-family: 'Inter', sans-serif;

    --ui-brand-700: #0879af;
    --ui-brand-600: #008acf;
    --ui-brand-100: #d9eef8;

    --ui-text-900: #1f2937;
    --ui-text-700: #334155;
    --ui-text-600: #4a5568;
    --ui-text-500: #64748b;

    --ui-bg-page: #f8fafc;
    --ui-bg-card: #ffffff;
    --ui-bg-soft: #f6f9ff;
    --ui-bg-soft-2: #eef5ff;
    --ui-bg-table-head: #f7faff;

    --ui-border-200: #e2e8f0;
    --ui-border-300: #dbe4ee;
    --ui-border-400: #cbd5e1;

    --ui-radius-sm: 10px;
    --ui-radius-md: 12px;
    --ui-radius-lg: 14px;
    --ui-radius-pill: 999px;

    --ui-shadow-sm: 0 6px 14px rgba(15, 23, 42, 0.06);
    --ui-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
}

/* Used in: depstafshow.php, teachdashboard.php, teachdashprint.php, teachdashedbo.php */
.ui-page-shell {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 12px 16px;
}

/* Used in: teachdash-detail-pages.css (.teachdash-detail-card), indicator/index.php panels */
.ui-surface-card {
    background: var(--ui-bg-card);
    border: 1px solid var(--ui-border-300);
    border-radius: var(--ui-radius-lg);
    box-shadow: var(--ui-shadow-sm);
}

/* Used in: depstafshow.php hero, teachdash-detail-pages.css profile card */
.ui-soft-card {
    background: linear-gradient(120deg, var(--ui-bg-soft) 0%, var(--ui-bg-soft-2) 100%);
    border: 1px solid var(--ui-border-200);
    border-radius: var(--ui-radius-lg);
}

/* Used in: indicator/index.php filter/action panels */
.ui-panel {
    background: var(--ui-bg-page);
    border: 1px solid var(--ui-border-200);
    border-radius: var(--ui-radius-md);
    padding: 16px;
}

/* Used in: depstafshow.php metadata chips, teachdash-detail-pages.css profile badge */
.ui-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .85rem;
    line-height: 1.2;
    border-radius: var(--ui-radius-pill);
    border: 1px solid var(--ui-border-400);
    background: var(--ui-bg-card);
    color: var(--ui-text-600);
    padding: 4px 10px;
}

/* Used in: depstafshow.php page title */
.ui-title {
    margin: 0;
    font-weight: 700;
    color: var(--ui-text-900);
}

/* Used in: future page subtitles and metric labels */
.ui-kicker {
    display: block;
    color: var(--ui-text-500);
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: 2px;
}

/* Used in: depstafshow.php actions, indicator/index.php action groups */
.ui-actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* Used in: indicator/index.php and depstafshow.php right action groups */
.indicator-filter-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    margin-left: auto;
}

/* Used in: indicator/index.php panel rows */
.ui-filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: end;
}

/* Used in: indicator/index.php panel groups */
.ui-filter-group {
    min-width: 180px;
}

/* Used in: indicator/index.php select controls */
.ui-select-control {
    min-width: 180px;
    height: 42px;
    border-radius: var(--ui-radius-md);
    font-size: 15px;
}

/* Used in: depstafshow.php statistics block */
.ui-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
}

/* Used in: depstafshow.php statistic item */
.ui-stat-card {
    background: var(--ui-bg-card);
    border: 1px solid var(--ui-border-200);
    border-radius: var(--ui-radius-md);
    padding: 12px 14px;
}

/* Used in: depstafshow.php statistic label */
.ui-stat-label {
    color: var(--ui-text-500);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .03em;
}

/* Used in: depstafshow.php statistic value */
.ui-stat-value {
    margin-top: 4px;
    line-height: 1;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ui-text-700);
}

/* Used in: depstafshow.php data table container */
.ui-table-shell {
    border: 1px solid var(--ui-border-300);
    border-radius: var(--ui-radius-lg);
    overflow: hidden;
    background: var(--ui-bg-card);
}

/* Used in: depstafshow.php table */
.ui-table-modern {
    margin-bottom: 0;
}

/* Used in: depstafshow.php table header */
.ui-table-modern thead th {
    border-top: 0;
    border-bottom: 1px solid var(--ui-border-200);
    background: var(--ui-bg-table-head);
    color: var(--ui-text-500);
    font-size: 12px;
    letter-spacing: .03em;
    text-transform: uppercase;
    white-space: nowrap;
}

/* Used in: depstafshow.php grouped position row */
.ui-table-section td {
    background: #f2f7ff;
    color: #2a4f79;
    font-weight: 700;
    border-top: 1px solid var(--ui-brand-100);
    border-bottom: 1px solid var(--ui-brand-100);
}

/* Used in: indicator/index.php panel headings */
.ui-card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--ui-text-900);
    margin-bottom: 12px;
}

/* Used in: indicator/index.php filter labels */
.ui-form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--ui-text-600);
    text-transform: uppercase;
    letter-spacing: .03em;
}

/* Used in: indicator/index.php and teachdash pages buttons */
.ui-btn {
    border-radius: var(--ui-radius-md);
}

/* Used in: indicator/createindicators.php action buttons */
.indicator-create-row .btn.ui-btn.btn-outline-secondary:hover,
.indicator-create-row .btn.ui-btn.btn-outline-secondary:focus,
.indicator-create-row .btn.ui-btn.btn-outline-secondary:active {
    color: var(--ui-brand-600);
    border-color: var(--ui-brand-600);
    background: #ffffff;
}

/* Used in: indicator/index.php action/filter panels and depstafshow.php action side block */
.ui-panel .btn {
    padding: 8px 14px;
    font-size: 15px;
    background: #ffffff;
}

/* Used in: teachdashnavi.php */
.ui-tabs.nav-tabs {
    background: var(--ui-bg-page);
    border: 1px solid var(--ui-border-200);
    border-radius: var(--ui-radius-md);
    padding: 8px;
    gap: 6px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 8px;
}

/* Used in: teachdashnavi.php */
.ui-tabs.nav-tabs .nav-link {
    border-radius: var(--ui-radius-md);
    border: 1px solid transparent;
    color: var(--ui-brand-600);
    font-weight: 600;
    background: var(--ui-bg-card);
    transition: all .15s ease-in-out;
}

/* Used in: teachdashnavi.php */
.ui-tabs.nav-tabs .nav-link:hover {
    border-color: var(--ui-brand-100);
    color: var(--ui-brand-700);
}

/* Used in: teachdashnavi.php */
.ui-tabs.nav-tabs .nav-link.active {
    background: var(--ui-brand-600);
    border-color: var(--ui-brand-700);
    color: #ffffff;
    box-shadow: 0 6px 14px rgba(0, 138, 207, 0.28);
}

/* Used in: teachdashedbo.php, teachdashprint.php, teachdashboard.php content blocks */
.ui-detail-card {
    margin-top: 8px;
    background: var(--ui-bg-card);
    border: 1px solid var(--ui-border-300);
    border-radius: var(--ui-radius-lg);
    box-shadow: var(--ui-shadow-sm);
    padding: 18px 20px;
    overflow-x: auto;
}

/* Used in: teachdash detail card actions */
.ui-detail-card .btn {
    border-radius: var(--ui-radius-sm);
    white-space: nowrap;
}

/* Used in: teachdash detail pages grouped scroll lists */
.ui-scroll-container {
    max-height: 68vh;
    overflow-y: auto;
    border: 1px solid var(--ui-border-200);
    border-radius: var(--ui-radius-sm);
    background: #fdfefe;
    padding: 6px 2px;
}

/* Used in: teachdash detail pages grouped headings */
.ui-group-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--ui-bg-page);
    padding: 10px 12px;
    font-weight: 700;
    border-top: 1px solid var(--ui-border-200);
    border-bottom: 1px solid var(--ui-border-200);
}

@media (max-width: 992px) {
    .ui-page-shell {
        padding: 0 10px 14px;
    }

    .ui-detail-card .btn {
        width: 100%;
        margin-top: 8px;
    }
}