:root{--bg: #f4f6fb;--card: #ffffff;--text: #1c2530;--muted: #667085;--line: #e2e8f0;--primary: #2563eb;--primary-dark: #1d4ed8;--ok: #0f9d58;--bad: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}.app-shell{max-width:1200px;margin:16px auto;padding:0 12px}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.card{border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px;background:var(--card);box-shadow:0 2px 6px #1018280a}.card h3{margin:0 0 10px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px}input,select,textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff}textarea{resize:vertical}button{padding:10px 14px;border:0;border-radius:8px;background:var(--primary);color:#fff;cursor:pointer;font-weight:600}button:hover{background:var(--primary-dark)}button:disabled{opacity:.6;cursor:default}.btn-secondary{background:#475467}.nav a{text-decoration:none;color:var(--primary-dark);font-weight:600;margin-right:10px}.msg-ok{color:var(--ok);font-weight:600}.msg-err{color:var(--bad);font-weight:600}pre{margin:0;background:#0b1220;color:#c6f6d5;border-radius:8px;padding:10px;overflow:auto;font-size:12px}.login-wrap{max-width:460px;margin:40px auto;padding:8px}