:root{--bg: #f6f7f9;--card: #ffffff;--text: #1c1e21;--muted: #6b7280;--border: #e2e5ea;--accent: #2563eb;--danger: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}.app{max-width:900px;margin:0 auto;padding:32px 20px 64px}header{display:flex;flex-wrap:wrap;gap:12px;align-items:baseline;justify-content:space-between;margin-bottom:24px}h1{font-size:1.5rem;margin:0}h2{font-size:1.05rem;margin:0 0 16px}.gpa{color:var(--muted);font-size:.95rem}.gpa strong{color:var(--accent);font-size:1.2rem}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:20px}.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}label{display:flex;flex-direction:column;gap:6px;font-size:.85rem;color:var(--muted)}input{padding:9px 11px;border:1px solid var(--border);border-radius:6px;font-size:.95rem;color:var(--text);background:#fff}input:focus{outline:2px solid var(--accent);outline-offset:-1px}.field-error{color:var(--danger);font-size:.78rem}.actions{display:flex;gap:10px;margin-top:18px}button{padding:9px 16px;border:1px solid var(--accent);border-radius:6px;background:var(--accent);color:#fff;font-size:.9rem;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}button.secondary{background:#fff;color:var(--text);border-color:var(--border)}button.danger{background:#fff;color:var(--danger);border-color:var(--danger)}.alert{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;background:#fef2f2;border:1px solid #fecaca;color:#991b1b;padding:12px 16px;border-radius:8px;margin-bottom:20px}.alert button{background:#fff;color:#991b1b;border-color:#fecaca}table{width:100%;border-collapse:collapse;font-size:.92rem}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em}.row-actions{display:flex;gap:8px;justify-content:flex-end}.row-actions button{padding:5px 12px;font-size:.82rem}.muted{color:var(--muted);margin:0}