:root{--bg: #f1f5f9;--card-bg: #ffffff;--ink: #0b1220;--muted: #475569;--border: #e2e8f0;--accent: #2563eb;font-family:Segoe UI,system-ui,-apple-system,sans-serif;color:var(--ink);background-color:var(--bg)}*{box-sizing:border-box}body{margin:0}.app{max-width:1100px;margin:0 auto;padding:2rem 1.5rem 3rem}.app__header h1{margin:0 0 .25rem;font-size:1.75rem}.app__subtitle{margin:0 0 1rem;color:var(--muted);font-size:.95rem}.app__footer{margin-top:2rem;color:var(--muted);font-size:.85rem}.status-message{font-size:1.1rem;color:var(--muted)}.status-message--error{color:#b91c1c}.model-selector{display:flex;align-items:center;gap:.5rem;margin-bottom:1.5rem}.model-selector__label{font-weight:600}.model-selector select{padding:.4rem .6rem;font-size:1rem;border:1px solid #94a3b8;border-radius:6px;background:var(--card-bg);color:var(--ink)}.metric-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-bottom:1.5rem}.metric-card{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:1rem 1.25rem;display:flex;flex-direction:column;gap:.4rem;box-shadow:0 1px 2px #0f172a0d}.metric-card__label{color:var(--muted);font-size:.85rem}.metric-card__value{font-size:1.8rem;font-weight:700}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:1.25rem}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:10px;padding:1.25rem;box-shadow:0 1px 2px #0f172a0d}.card h2{margin:0 0 .75rem;font-size:1.05rem}.card__hint{margin:-.4rem 0 .9rem;color:var(--muted);font-size:.8rem}.chart-wrapper{width:100%}.confusion-matrix{display:flex;flex-direction:column;gap:4px}.confusion-matrix__row{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:4px}.confusion-matrix__head,.confusion-matrix__corner{display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:600;color:var(--muted);padding:.35rem;text-align:center}.confusion-matrix__cell{display:flex;align-items:center;justify-content:center;aspect-ratio:2 / 1;border-radius:6px;font-weight:700;font-size:1.1rem;color:var(--ink);border:1px solid var(--border)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}