/* ════════════════════════════════════════════════════════════════════════
   Learning Analytics - Reusable styles
   Prefix: la-   (learning analytics)
   Extends the --ea-* design‑token system from educator‑admin.css
   ════════════════════════════════════════════════════════════════════════ */

/* ──────────────── Extra tokens ──────────────── */
:root {
    --la-green-light: #34d399;
    --la-red:         #ef4444;
    --la-red-bg:      rgba(239, 68, 68, .08);
    --la-cyan:        #06b6d4;
    --la-cyan-bg:     rgba(6, 182, 212, .08);
    --la-purple:      #8b5cf6;
    --la-purple-bg:   rgba(139, 92, 246, .08);
}

/* ──────────────── Period pills ──────────────── */
.la-period-pills {
    display: flex;
    gap: .25rem;
    background: var(--ea-surface-card);
    border: 1px solid var(--ea-neutral-10);
    border-radius: var(--ea-radius, 8px);
    padding: 3px;
}

.la-period-pill {
    border: none;
    background: transparent;
    font-family: var(--ea-font);
    font-size: .75rem;
    font-weight: 500;
    padding: .35rem .75rem;
    border-radius: 6px;
    cursor: pointer;
    color: var(--ea-neutral-40);
    transition: all .2s;
}

.la-period-pill:hover {
    color: var(--ea-blue);
}

.la-period-pill.active {
    background: var(--ea-blue);
    color: #fff;
}

/* ──────────────── Date range trigger ──────────────── */
.la-date-range {
    display: flex;
    align-items: center;
    gap: .5rem;
    background: var(--ea-surface-card);
    border: 1px solid var(--ea-neutral-10);
    border-radius: var(--ea-radius, 8px);
    padding: .45rem .85rem;
    font-size: .8rem;
    color: var(--ea-neutral-60);
    cursor: pointer;
    transition: border-color .2s;
}

.la-date-range:hover {
    border-color: var(--ea-blue);
}

.la-date-range svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--ea-neutral-40);
}

.la-date-range span {
    white-space: nowrap;
}

/* ──────────────── Stat card grid ──────────────── */
.la-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.75rem;
}

/* ──────────────── Stat card ──────────────── */
.la-stat-card {
    background: var(--ea-surface-card);
    border: 1px solid var(--ea-neutral-10);
    border-radius: var(--ea-radius, 12px);
    padding: 1.25rem 1.4rem;
    box-shadow: var(--ea-shadow-sm, 0 1px 3px rgba(0,0,0,.06));
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: box-shadow .2s;
}

.la-stat-card:hover {
    box-shadow: var(--ea-shadow-md, 0 4px 12px rgba(0,0,0,.08));
}

/* ── Icon container ── */
.la-stat-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.la-stat-icon svg {
    width: 20px;
    height: 20px;
}

.la-stat-icon.blue   { background: rgba(77, 46, 253, .06);  color: var(--ea-blue);  }
.la-stat-icon.green  { background: rgba(43, 157, 94, .08);  color: var(--ea-green-dark, #2b9d5e); }
.la-stat-icon.orange { background: rgba(254, 146, 13, .08); color: var(--ea-orange); }
.la-stat-icon.pink   { background: rgba(240, 79, 205, .08); color: var(--ea-pink);   }
.la-stat-icon.red    { background: var(--la-red-bg);         color: var(--la-red);    }
.la-stat-icon.cyan   { background: var(--la-cyan-bg);        color: var(--la-cyan);   }

/* ── Body ── */
.la-stat-body {
    flex: 1;
    min-width: 0;
}

.la-stat-label {
    font-size: .72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--ea-neutral-40);
    margin-bottom: .15rem;
}

.la-stat-value {
    font-size: 1.55rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--ea-black);
}

/* ── Trend chip ── */
.la-stat-trend {
    display: inline-flex;
    align-items: center;
    gap: .2rem;
    font-size: .7rem;
    font-weight: 600;
    margin-left: .35rem;
}

.la-stat-trend svg {
    width: 12px;
    height: 12px;
}

.la-stat-trend.up   { color: var(--ea-green-dark, #2b9d5e); }
.la-stat-trend.down { color: var(--la-red); }

/* ──────────────── 2‑column grid ──────────────── */
.la-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.75rem;
    margin-top: 1.75rem;
}

/* ──────────────── Full‑width grid slot ──────────────── */
.la-grid-full {
    margin-bottom: 1.75rem;
}

/* ──────────────── Chart card ──────────────── */
.la-chart-wrap {
    position: relative;
    width: 100%;
}

/* ──────────────── Donut layout ──────────────── */
.la-donut-wrap {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.la-donut-canvas-wrap {
    width: 220px;
    flex-shrink: 0;
}

.la-donut-legend {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.la-legend-item {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .8rem;
    color: var(--ea-neutral-60);
}

.la-legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.la-legend-value {
    margin-left: auto;
    font-weight: 600;
    color: var(--ea-black);
}

.la-legend-pct {
    color: var(--ea-neutral-30);
    font-weight: 400;
}

/* ──────────────── Table (game breakdown, leaderboard) ──────────────── */
.la-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .82rem;
}

.la-table th {
    text-align: left;
    padding: .75rem 1rem;
    font-size: .72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--ea-neutral-40);
    background: var(--ea-surface, #f7f7f8);
    border-bottom: 1px solid var(--ea-neutral-10);
}

.la-table td {
    padding: .7rem 1rem;
    border-bottom: 1px solid var(--ea-neutral-10);
    color: var(--ea-neutral-60);
}

.la-table tbody tr:hover {
    background: rgba(77, 46, 253, .02);
}

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

/* ── Rank badge ── */
.la-rank {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-size: .72rem;
    font-weight: 700;
}

.la-rank.gold   { background: #FFF3CD; color: #886A08; }
.la-rank.silver { background: #E8E8ED; color: #555;    }
.la-rank.bronze { background: #FDDBC7; color: #8B5E3C; }
.la-rank.default { background: var(--ea-surface, #f7f7f8); color: var(--ea-neutral-40); }

/* ── Progress bar ── */
.la-progress {
    width: 100%;
    max-width: 120px;
    height: 6px;
    background: var(--ea-neutral-10);
    border-radius: 3px;
    overflow: hidden;
    display: inline-block;
    vertical-align: middle;
    margin-right: .4rem;
}

.la-progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width .5s ease;
}

.la-progress-fill.green  { background: var(--ea-green-dark, #2b9d5e); }
.la-progress-fill.red    { background: var(--la-red); }
.la-progress-fill.blue   { background: var(--ea-blue); }
.la-progress-fill.orange { background: var(--ea-orange); }

/* ── Badge variants ── */
.la-badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .2rem .6rem;
    border-radius: 20px;
    font-size: .7rem;
    font-weight: 600;
    white-space: nowrap;
}

.la-badge.success { background: rgba(43, 157, 94, .08); color: var(--ea-green-dark, #2b9d5e); }
.la-badge.warning { background: rgba(254, 146, 13, .08); color: var(--ea-orange); }
.la-badge.info    { background: rgba(77, 46, 253, .06);  color: var(--ea-blue); }
.la-badge.danger  { background: var(--la-red-bg);         color: var(--la-red); }

/* ── Student avatar (inline circle) ── */
.la-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: .7rem;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}

/* ── Student cell (avatar + name) ── */
.la-student-cell {
    display: flex;
    align-items: center;
    gap: .6rem;
}

.la-student-name {
    font-weight: 600;
    color: var(--ea-black);
}

.la-student-id {
    font-size: .7rem;
    color: var(--ea-neutral-40);
}

/* ──────────────── Game name cell ──────────────── */
.la-game-cell {
    display: flex;
    align-items: center;
    gap: .6rem;
}

.la-game-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.la-game-icon svg {
    width: 16px;
    height: 16px;
}

.la-game-icon.blue   { background: rgba(77, 46, 253, .06);  color: var(--ea-blue); }
.la-game-icon.green  { background: rgba(43, 157, 94, .08);  color: var(--ea-green-dark, #2b9d5e); }
.la-game-icon.orange { background: rgba(254, 146, 13, .08); color: var(--ea-orange); }
.la-game-icon.pink   { background: rgba(240, 79, 205, .08); color: var(--ea-pink); }
.la-game-icon.cyan   { background: var(--la-cyan-bg);        color: var(--la-cyan); }

.la-game-title {
    font-weight: 600;
    color: var(--ea-black);
}

.la-game-subtitle {
    font-size: .68rem;
    color: var(--ea-neutral-40);
}

/* ── Rate text ── */
.la-rate {
    font-weight: 600;
    font-size: .78rem;
}

/* ──────────────── Activity feed ──────────────── */
.la-feed {
    max-height: 400px;
    overflow-y: auto;
    padding: .5rem 0;
}

.la-feed::-webkit-scrollbar { width: 5px; }
.la-feed::-webkit-scrollbar-thumb { background: var(--ea-neutral-20); border-radius: 3px; }

.la-feed-item {
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    padding: .65rem 1.4rem;
    transition: background .15s;
    cursor: default;
}

.la-feed-item:hover {
    background: var(--ea-surface, #f7f7f8);
}

/* ── Verb dot ── */
.la-feed-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: .45rem;
    flex-shrink: 0;
}

.la-feed-dot.interacted  { background: var(--ea-blue); }
.la-feed-dot.completed   { background: var(--ea-green-dark, #2b9d5e); }
.la-feed-dot.passed      { background: var(--la-green-light); }
.la-feed-dot.failed      { background: var(--la-red); }
.la-feed-dot.attempted   { background: var(--ea-orange); }
.la-feed-dot.answered    { background: var(--la-cyan); }
.la-feed-dot.launched    { background: var(--ea-pink); }
.la-feed-dot.initialized { background: var(--la-purple); }
.la-feed-dot.terminated  { background: var(--ea-neutral-40); }

/* ── Feed body ── */
.la-feed-body { flex: 1; min-width: 0; }

.la-feed-text {
    font-size: .8rem;
    color: var(--ea-neutral-60);
    line-height: 1.45;
}

.la-feed-text strong {
    color: var(--ea-black);
    font-weight: 600;
}

.la-feed-verb {
    display: inline-block;
    padding: .1rem .4rem;
    border-radius: 4px;
    font-size: .7rem;
    font-weight: 600;
}

.la-feed-verb.interacted  { background: rgba(77, 46, 253, .06);  color: var(--ea-blue); }
.la-feed-verb.completed   { background: rgba(43, 157, 94, .08);  color: var(--ea-green-dark, #2b9d5e); }
.la-feed-verb.passed      { background: rgba(43, 157, 94, .08);  color: var(--ea-green-dark, #2b9d5e); }
.la-feed-verb.failed      { background: var(--la-red-bg);         color: var(--la-red); }
.la-feed-verb.attempted   { background: rgba(254, 146, 13, .08); color: var(--ea-orange); }
.la-feed-verb.answered    { background: var(--la-cyan-bg);        color: var(--la-cyan); }
.la-feed-verb.launched    { background: rgba(240, 79, 205, .08); color: var(--ea-pink); }
.la-feed-verb.initialized { background: var(--la-purple-bg);      color: var(--la-purple); }
.la-feed-verb.terminated  { background: rgba(142,142,153,.08);   color: var(--ea-neutral-40); }

.la-feed-time {
    font-size: .68rem;
    color: var(--ea-neutral-30);
    margin-top: .15rem;
}

/* ──────────────── Filter bar ──────────────── */
.la-filters {
    display: flex;
    align-items: center;
    gap: .65rem;
    flex-wrap: wrap;
}

.la-select-sm {
    font-size: .72rem;
    padding: .3rem .5rem;
}

/* ──────────────── Header actions row ──────────────── */
.la-header-actions {
    display: flex;
    gap: .75rem;
    align-items: center;
    flex-wrap: wrap;
}

/* ──────────────── Responsive ──────────────── */
@media (max-width: 1024px) {
    .la-grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .la-stats { grid-template-columns: repeat(2, 1fr); }
    .la-donut-wrap { flex-direction: column; align-items: flex-start; }
}

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