*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(135deg,#eef2ff,#f8fbff,#eefbf1);color:#1d2a44}
.container{width:min(1120px,94%);margin:auto;padding:35px 0 50px}
.topbar{display:flex;justify-content:space-between;gap:20px;background:white;padding:26px;border-radius:24px;margin-bottom:24px;box-shadow:0 18px 45px rgba(31,64,130,.10)}
h1{margin:0 0 8px;font-size:36px}
.topbar p{margin:0;line-height:1.5;color:#60708f}
.progress{background:#2451d1;color:white;padding:18px;border-radius:18px;font-weight:bold;font-size:22px;text-align:center;min-width:155px}
.info-box,.example-card,.finish-card{background:white;border-radius:22px;padding:24px 28px;margin-bottom:20px;box-shadow:0 14px 35px rgba(31,64,130,.10);border:2px solid rgba(198,213,245,.75)}
.info-box{border-left:8px solid #ffcf33}
.info-box h2{margin-top:0}
.info-box p{margin:8px 0;font-size:18px}
.examples-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.example-card{transition:.2s}
.good-card{border-color:#16a34a;box-shadow:0 14px 35px rgba(22,163,74,.18)}
.bad-card{border-color:#dc2626;box-shadow:0 14px 35px rgba(220,38,38,.16)}
.type-pill{display:inline-block;background:#ffefb5;color:#6f5200;font-weight:bold;padding:9px 15px;border-radius:999px;margin-bottom:16px}
.zadani{background:#2451d1;color:white;font-size:36px;font-weight:bold;text-align:center;padding:26px;border-radius:20px;margin-bottom:18px}
.mini-vzor{background:#111827;color:white;padding:12px;border-radius:10px;margin-bottom:10px;font-family:monospace;text-align:center;font-size:16px}
.step-hint{background:#f3f4f6;border-left:4px solid #3b82f6;padding:10px 14px;border-radius:10px;margin-bottom:12px}
input{width:100%;padding:16px;font-size:22px;border-radius:14px;border:2px solid #b8c8ea;outline:none}
input:focus{border-color:#2451d1;box-shadow:0 0 0 4px rgba(36,81,209,.12)}
button{padding:14px 20px;font-size:18px;border:none;border-radius:14px;background:#2451d1;color:white;font-weight:bold;cursor:pointer}
button:hover:not(:disabled){background:#173fae}
button:disabled{background:#9caad0;cursor:not-allowed}
.secondary{background:#eef3fb;color:#2451d1}
.message{min-height:24px;font-weight:bold}.good{color:#17803b}.bad{color:#d13232}
.footer-buttons{display:flex;justify-content:center;gap:14px;margin-top:26px;flex-wrap:wrap}
.finish-card{text-align:center;padding:54px 30px}
.finish-card p{font-size:22px;color:#60708f}
@media(max-width:800px){.topbar{flex-direction:column}.examples-grid{grid-template-columns:1fr}.zadani{font-size:30px}button{width:100%}}