:root{font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#173d40;background:#f2f6f3}*{box-sizing:border-box}body{margin:0}header{background:#153d40;color:white;padding:17px max(20px,calc((100vw - 1050px)/2));display:flex;justify-content:space-between;gap:10px;font-weight:800}header a{color:white;text-decoration:none}main{max-width:1050px;margin:24px auto;padding:0 16px}.card{background:#fff;border:1px solid #d8e5df;border-radius:15px;padding:22px;margin:0 0 18px;box-shadow:0 7px 24px #153d4010}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}.grid .card{margin:0 0 18px}h1{font-size:24px;margin:0 0 12px}h2{font-size:19px;margin:0 0 12px}p{line-height:1.6}button,.button{display:inline-block;border:0;border-radius:9px;background:#197c73;color:white;font:inherit;font-weight:700;padding:11px 16px;cursor:pointer;text-decoration:none;margin:3px}button.secondary{background:#e7f1ec;color:#174b46}button:disabled{opacity:.55}input{display:block;min-width:min(100%,330px);padding:10px;border:1px solid #a8bcb5;border-radius:8px;font:inherit;margin:7px 0 15px}.notice{background:#fff0bf;border-left:4px solid #c48b12;padding:11px 14px;border-radius:7px;font-weight:700}.muted{color:#627c78}.status{font-weight:700}.buttons{display:flex;gap:5px;flex-wrap:wrap;margin:8px 0 14px}.buttons button.active{background:#075850}.qr{display:inline-block;padding:10px;border:1px solid #d5e5db;border-radius:10px;background:white}.qr svg{display:block;max-width:100%;height:auto}.link{overflow-wrap:anywhere;font-size:14px}.big{font-size:clamp(25px,6vw,38px);line-height:1.35;font-weight:800;color:#116d63;margin:14px 0}.round-display{text-align:center;padding:12px;border:2px solid #9bd5bf;border-radius:14px;background:#e8f5ef;color:#116d63;font-size:clamp(42px,11vw,65px);font-weight:900;margin:8px 0}.checkin-status{text-align:center;font-size:18px;font-weight:800}.front,.back{text-align:center;color:#78918c;font-size:12px;font-weight:800;letter-spacing:.15em}.desk{width:130px;margin:7px auto 14px;padding:7px;border:1px solid #cbdcd4;border-radius:7px;background:#f6faf7;text-align:center;color:#54736e;font-size:12px}.map{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.seat{min-width:0;min-height:43px;border:1px solid #d4e6df;border-radius:8px;background:#eff9f4;color:#176e60;display:flex;align-items:center;justify-content:space-between;padding:5px 9px;font-size:14px;font-weight:800}.seat.six{background:#eff5fb;border-color:#d8e4f0;color:#3e74a6}.seat.unused{background:#f2f3f4;border-style:dashed;border-color:#d0d9db;color:#a2b0b3}.seat.target{background:#df3636;border:3px solid #a91e1e;color:white;box-shadow:0 0 0 3px #f8b5b5}.seat small{font-size:10px}.legend{font-size:12px;color:#55716b;margin-bottom:10px}@media(max-width:600px){main{padding:0 10px}.card{padding:16px}.seat{min-height:39px;padding:4px 6px;font-size:13px}.seat small{font-size:9px}}
#activationButtons{max-height:450px;overflow:auto;padding:4px}.student-link-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap;border-bottom:1px solid #e4eee9;padding:5px 0}.student-link-row span{flex:1 1 160px;font-weight:700}.student-link-row button{font-size:13px;padding:8px 10px}
[hidden]{display:none!important}.reset-dialog{width:min(94vw,520px);border:1px solid #cbdcd4;border-radius:14px;padding:24px;color:#173d40;background:#fff;box-shadow:0 18px 55px #112f3050}.reset-dialog::backdrop{background:#102b2db3}.reset-dialog p{line-height:1.6}.reset-dialog input{width:100%;max-width:none}