:root{color-scheme:light;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.4}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(155deg,#f7f8ff,#eef4ff 45%,#f4fbff);color:#1d2b52}.app-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.panel{width:min(760px,100%);background:#ffffffe0;border:1px solid rgba(29,43,82,.12);border-radius:18px;box-shadow:0 18px 45px #1d2b5224;padding:24px}h1{margin:0;font-size:clamp(1.6rem,2.3vw,2.2rem)}.subtitle{margin:8px 0 20px;color:#415489}.field-label,.name-field span{display:block;font-weight:600;margin-bottom:6px}.text-input{width:100%;border:1px solid #c4d1f5;border-radius:10px;font-size:1rem;padding:10px 12px;color:#10204f}.text-input:focus{outline:2px solid #8ab4ff;outline-offset:2px}.name-grid{margin-top:14px;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.name-field{display:block}.start-button{margin-top:22px;border:none;border-radius:12px;background:#1767ff;color:#fff;font-weight:700;font-size:1rem;padding:12px 16px;cursor:pointer}.start-button:hover{background:#0f54d5}.participant-list{display:grid;gap:12px}.participant-card{border:1px solid #b9c9f7;border-radius:12px;background:#f7faff;color:#10204f;text-align:left;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;font-size:1rem;cursor:pointer;transition:transform .12s ease,border-color .12s ease,background .12s ease}.participant-card:hover{transform:translateY(-1px);border-color:#8ea9ef}.participant-card.active{border-color:#145ee8;background:#e8f0ff}.participant-name{font-weight:700}.participant-time{font-family:Consolas,Courier New,monospace;font-size:1.1rem}@media (max-width: 640px){.panel{padding:18px}.participant-card{gap:8px;flex-direction:column;align-items:flex-start}}