main{max-width:1180px}h1{font-size:clamp(2rem,5vw,3.6rem)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));gap:12px;margin:18px 0}.stat{padding:18px;background:#e8f1ed;border-radius:16px}.stat b{display:block;font-size:1.7rem}.code{font-family:monospace;overflow-wrap:anywhere;font-size:1.05rem}.scroll{overflow:auto}td,th{text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #d8e3df}.answer{white-space:pre-wrap;overflow-wrap:anywhere}.danger{color:#9a2929}.teacher-nav{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.teacher-nav label{flex:1;min-width:180px}select,input{max-width:100%}.cards-codes{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.code-card{border:1px dashed #677b74;padding:16px;break-inside:avoid}.small{font-size:.9rem}#teacherStatus:not(:empty){padding:15px;background:#fff1c9;border-radius:12px;margin:12px 0}@media print{header,.no-print,button,form,#teacherStatus{display:none!important}main{padding:0}.code-card{color:#000}details{display:block}}