/**
 * OLAMI Mentoring Analytics — Stylesheet
 * File: assets/css/mentoring-analytics.css
 * Uses design tokens from design-tokens.css
 * Follows stats.css conventions
 */

/* =========================================
   1. WRAPPER & LAYOUT
   ========================================= */
.olami-mentoring-analytics {
    font-family: var(--font-sans);
    color: var(--text);
    max-width: 1200px;
    margin: 0 auto;
}

/* =========================================
   2. FILTER BAR (reuses .os-filter-bar)
   ========================================= */
.oma-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    gap: 12px;
}

.oma-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
}

/* =========================================
   3. KPI CARDS
   ========================================= */
.oma-kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 24px;
}

.oma-kpi {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 16px;
    text-align: center;
    transition: var(--transition);
}

.oma-kpi:hover {
    box-shadow: var(--shadow-md);
}

.oma-kpi-num {
    font-size: 28px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.oma-kpi-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* =========================================
   4. SECTION TITLES
   ========================================= */
.oma-section-title {
    margin: 28px 0 14px 0;
    font-size: 14px;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 1px;
    font-weight: 700;
}

/* =========================================
   5. LEADERBOARD TABLE
   ========================================= */
.oma-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 24px;
}

.oma-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.oma-table thead th {
    background: var(--surface-hover);
    padding: 10px 14px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.oma-table tbody td {
    padding: 10px 14px;
    font-size: 13px;
    color: var(--text);
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}

.oma-table tbody tr:hover {
    background: var(--surface-hover);
}

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

.oma-rank {
    font-weight: 800;
    color: var(--text-secondary);
    width: 40px;
    text-align: center;
}

.oma-rank-1 { color: #f59e0b; }
.oma-rank-2 { color: #94a3b8; }
.oma-rank-3 { color: #b45309; }

.oma-staff-name {
    font-weight: 600;
}

.oma-clickable {
    cursor: pointer;
}

.oma-clickable:hover .oma-staff-name {
    color: var(--primary);
    text-decoration: underline;
}

/* Coverage bar */
.oma-coverage-bar {
    width: 60px;
    height: 6px;
    background: var(--border-light);
    border-radius: 3px;
    display: inline-block;
    vertical-align: middle;
    margin-right: 6px;
}

.oma-coverage-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--success);
    transition: width 0.3s;
}

.oma-coverage-fill.oma-warn { background: var(--warning, #f59e0b); }
.oma-coverage-fill.oma-danger { background: var(--danger); }

/* =========================================
   6. DRILL-DOWN PANEL
   ========================================= */
.oma-drill {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}

.oma-drill-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    gap: 12px;
    flex-wrap: wrap;
}

.oma-drill-header h3 {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
}

.oma-back-btn {
    font-size: 12px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: var(--radius-sm, 8px);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.oma-back-btn:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    color: var(--primary);
}

.oma-drill-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

/* Red zone badges */
.oma-red-badge {
    display: inline-block;
    background: var(--danger-bg, #fef2f2);
    color: var(--danger);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
}

.oma-green-badge {
    display: inline-block;
    background: var(--success-bg, #f0fdf4);
    color: var(--success);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
}

/* =========================================
   7. STUDENT ATTENTION MAP
   ========================================= */
.oma-attention-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.oma-attention-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.oma-attention-card h4 {
    margin: 0 0 12px 0;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.oma-never-met-count {
    font-size: 36px;
    font-weight: 800;
    color: var(--danger);
    margin-bottom: 4px;
}

/* =========================================
   8. CHARTS
   ========================================= */
.oma-chart-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.oma-chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.oma-chart-card h4 {
    margin: 0 0 12px 0;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.oma-delta {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 8px;
}

.oma-delta-up {
    background: var(--success-bg, #f0fdf4);
    color: var(--success);
}

.oma-delta-down {
    background: var(--danger-bg, #fef2f2);
    color: var(--danger);
}

/* =========================================
   9. MOBILE RESPONSIVE
   ========================================= */
@media (max-width: 768px) {
    .oma-kpi-grid {
        grid-template-columns: 1fr 1fr;
    }

    .oma-drill-grid {
        grid-template-columns: 1fr;
    }

    .oma-attention-grid {
        grid-template-columns: 1fr;
    }

    .oma-chart-grid {
        grid-template-columns: 1fr;
    }

    .oma-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .oma-kpi-grid {
        grid-template-columns: 1fr;
    }

    .oma-kpi-num {
        font-size: 24px;
    }
}

/* =========================================
   10. PRINT STYLES
   ========================================= */
@media print {
    .os-filter-bar,
    .oma-back-btn,
    .analytics-hub-nav {
        display: none !important;
    }

    .oma-table,
    .oma-kpi,
    .oma-chart-card,
    .oma-attention-card {
        break-inside: avoid;
    }

    .oma-kpi-num,
    .oma-staff-name {
        color: #000 !important;
    }
}