/* ============================================================
   BesicEdu — Analytics dashboards (student/teacher/admin)
   DESIGN_SYSTEM.md §2.3 — module rangi: primary (bilim oqimi).
   Tokenlarda barchasi. Hech bir hard-coded hex bo'lmasligi kerak.
   ============================================================ */

.bedu-analytics {
    display: grid;
    gap: var(--bedu-space-4);
}

/* ─── KPI row (4-col) ───────────────────────────────────── */
.bedu-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--bedu-space-3);
}
.bedu-kpi {
    background: var(--bedu-surface);
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius);
    padding: var(--bedu-space-4);
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: transform var(--bedu-dur-fast) var(--bedu-ease);
}
.bedu-kpi:hover { transform: translateY(-2px); }
.bedu-kpi__label {
    font-size: 0.78rem;
    color: var(--bedu-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.bedu-kpi__value {
    font-family: var(--bedu-font-heading);
    font-weight: 800;
    font-size: 1.8rem;
    color: var(--bedu-text);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}
.bedu-kpi__hint {
    font-size: 0.78rem;
    color: var(--bedu-text-soft);
}
/* Per-kind tint (left border) */
.bedu-kpi[data-tint="primary"] { border-left: 3px solid var(--bedu-primary); }
.bedu-kpi[data-tint="accent"]  { border-left: 3px solid var(--bedu-accent); }
.bedu-kpi[data-tint="success"] { border-left: 3px solid var(--bedu-success); }
.bedu-kpi[data-tint="warm"]    { border-left: 3px solid var(--bedu-warm); }

/* ─── Card shell (chart container) ──────────────────────── */
.bedu-card {
    background: var(--bedu-surface);
    border: 1px solid var(--bedu-border);
    border-radius: var(--bedu-radius);
    padding: var(--bedu-space-4);
    box-shadow: var(--bedu-shadow-xs);
}
.bedu-card__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--bedu-space-2);
    margin-bottom: var(--bedu-space-3);
}
.bedu-card__title {
    font-family: var(--bedu-font-heading);
    font-weight: 700;
    color: var(--bedu-text);
    font-size: 1.05rem;
}
.bedu-card__hint {
    color: var(--bedu-text-muted);
    font-size: 0.82rem;
}
.bedu-card__body { min-height: 220px; }
.bedu-card__body--tall { min-height: 320px; }
.bedu-card canvas { max-width: 100%; }

/* ─── 2-col / 3-col grid for chart cards ────────────────── */
.bedu-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: var(--bedu-space-4);
}
.bedu-grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--bedu-space-3);
}

/* ─── Heatmap (7×4 activity grid) ───────────────────────── */
.bedu-heatmap {
    display: grid;
    grid-template-columns: auto repeat(4, 1fr);
    gap: 4px;
    margin-top: var(--bedu-space-2);
}
.bedu-heatmap__cell {
    aspect-ratio: 1;
    border-radius: 4px;
    background: var(--bedu-primary-50);
    border: 1px solid var(--bedu-border);
    transition: transform var(--bedu-dur-fast) var(--bedu-ease);
}
.bedu-heatmap__cell:hover { transform: scale(1.08); }
.bedu-heatmap__cell[data-level="0"] { background: var(--bedu-surface-muted); }
.bedu-heatmap__cell[data-level="1"] { background: var(--bedu-primary-50); }
.bedu-heatmap__cell[data-level="2"] { background: var(--bedu-primary-100); }
.bedu-heatmap__cell[data-level="3"] { background: var(--bedu-primary); }
.bedu-heatmap__cell[data-level="4"] { background: var(--bedu-primary-600); }
.bedu-heatmap__dow {
    align-self: center;
    color: var(--bedu-text-muted);
    font-size: 0.75rem;
    padding-right: var(--bedu-space-2);
}

/* ─── Needs-help list ────────────────────────────────────── */
.bedu-needs-help {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 6px;
}
.bedu-needs-help li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bedu-warm-50);
    border: 1px solid var(--bedu-warm);
    border-radius: var(--bedu-radius-sm);
    font-size: 0.9rem;
}
.bedu-needs-help__score {
    font-family: var(--bedu-font-heading);
    font-weight: 800;
    color: var(--bedu-warm-600);
}

/* ─── Activity feed (recent events) ─────────────────────── */
.bedu-activity {
    display: grid;
    gap: 8px;
}
.bedu-activity__row {
    display: grid;
    grid-template-columns: 32px 1fr auto;
    align-items: center;
    gap: var(--bedu-space-2);
    padding: 8px 0;
    border-bottom: 1px solid var(--bedu-border);
}
.bedu-activity__row:last-child { border-bottom: 0; }
.bedu-activity__icon {
    width: 32px; height: 32px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: var(--bedu-surface-muted);
    color: var(--bedu-text-muted);
}
.bedu-activity__row[data-verb="earned"] .bedu-activity__icon {
    background: var(--bedu-accent-50); color: var(--bedu-accent-600);
}
.bedu-activity__row[data-verb="finished"] .bedu-activity__icon {
    background: var(--bedu-success-50); color: var(--bedu-success-600);
}
.bedu-activity__row[data-verb="answered"] .bedu-activity__icon {
    background: var(--bedu-primary-50); color: var(--bedu-primary-600);
}
.bedu-activity__label { color: var(--bedu-text); }
.bedu-activity__time {
    color: var(--bedu-text-soft);
    font-size: 0.78rem;
    white-space: nowrap;
}

/* ─── Empty state ────────────────────────────────────────── */
.bedu-empty {
    text-align: center;
    padding: var(--bedu-space-5) var(--bedu-space-4);
    color: var(--bedu-text-muted);
}
.bedu-empty i {
    font-size: 2rem;
    color: var(--bedu-text-soft);
    display: block;
    margin-bottom: var(--bedu-space-2);
}