.app-nav-bar{border-bottom:1px solid var(--color-line);background:var(--color-bg)}.app-nav{align-items:center;gap:var(--space-6);min-height:64px;padding-top:var(--space-2);padding-bottom:var(--space-2);grid-template-columns:auto 1fr auto;display:grid}.app-nav-links{gap:4px;display:flex}.site-light a.app-nav-link{border-radius:var(--radius-pill);min-height:40px;font-size:var(--text-sm);color:var(--color-ink-soft);align-items:center;padding:0 14px;font-weight:500;transition:background-color .15s,color .15s;display:inline-flex}.site-light a.app-nav-link:hover{color:var(--color-ink);background:var(--color-surface-muted)}.site-light a.app-nav-link-active,.site-light a.app-nav-link-active:hover{color:var(--color-ink);background:var(--color-surface);box-shadow:var(--shadow-sm), 0 0 0 1px var(--color-line);font-weight:600}.app-nav-right{align-items:center;gap:12px;display:flex}@media (max-width:960px){.app-nav{grid-template-columns:1fr auto;row-gap:12px}.app-nav-links{scrollbar-width:none;grid-area:2/1/auto/-1;margin:0 -4px;overflow-x:auto}.site-light a.app-nav-link{flex:none;padding:0 12px}}.drill{gap:var(--space-4);flex-direction:column;display:flex}.drill-head{justify-content:space-between;align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.drill-wait{font-size:var(--text-sm);color:var(--color-ink-faint)}.drill-wait:before{content:"";background:var(--color-sage);vertical-align:middle;border-radius:50%;width:8px;height:8px;margin-right:10px;animation:1.2s ease-in-out infinite drill-pulse;display:inline-block}.drill-status{align-items:center;gap:var(--space-2);display:flex}.drill-rec{background:var(--color-danger);border-radius:50%;width:8px;height:8px;animation:1.2s ease-in-out infinite drill-pulse}@keyframes drill-pulse{0%,to{opacity:1}50%{opacity:.35}}.drill-eyebrow-live{color:var(--color-danger)}.drill-eyebrow-done{color:var(--color-action-hover)}.drill-timer{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:var(--text-sm);color:var(--color-ink);margin-left:auto}.drill-prompt{font-size:var(--text-lg);color:var(--color-ink);text-wrap:pretty;line-height:1.5}.drill-note{font-size:var(--text-sm);line-height:var(--leading-normal);color:var(--color-ink-soft)}.drill-hint{font-size:var(--text-xs);color:var(--color-ink-faint)}.drill-streak{font-size:var(--text-sm);color:var(--color-forest);font-weight:600}.drill-actions{align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.drill-select{width:auto;min-width:220px}.drill-metrics{gap:var(--space-3);grid-template-columns:repeat(3,minmax(0,1fr));margin:0;display:grid}.drill-metrics>div{padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);background:var(--color-surface-muted)}.drill-metrics dt{font-size:var(--text-2xs);letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-faint);margin-bottom:4px;font-weight:600}.drill-metrics dd{font-size:var(--text-2xl);letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--color-ink);margin:0;font-weight:600}.drill-metrics dd span{font-size:var(--text-sm);color:var(--color-ink-faint);margin-left:3px;font-weight:500}@media (max-width:480px){.drill-metrics{grid-template-columns:1fr}.drill-select{width:100%}}