:root{font-family:Inter,system-ui,sans-serif;color:#e9eef7;background:#07101d}*{box-sizing:border-box}body{margin:0}header{height:76px;padding:14px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #233149;background:#0b1626}h1,h2,p{margin:0}h1{font-size:22px}header p,.roomhead p{color:#8ea1bc;font-size:13px;margin-top:4px}.pill{padding:8px 12px;border:1px solid #2d405f;border-radius:30px;font-size:12px}main{display:grid;grid-template-columns:340px 1fr;gap:16px;padding:16px;height:calc(100vh - 76px)}aside{display:flex;flex-direction:column;gap:16px;overflow:auto}.panel{background:#0d192a;border:1px solid #22334f;border-radius:14px;padding:16px}.panel h2{font-size:16px;margin-bottom:14px}label{display:block;color:#aebbd0;font-size:13px;margin:11px 0}textarea,input,select{width:100%;margin-top:6px;background:#071221;border:1px solid #2a3c58;color:#eef4ff;border-radius:9px;padding:10px}textarea{height:90px;resize:vertical}button{border:0;border-radius:9px;padding:10px 13px;background:#5b7cfa;color:white;font-weight:700;cursor:pointer}form button{width:100%;margin-top:8px}.ghost{background:#18263b}.danger{background:#a83f4d}.row,.roomhead{display:flex;align-items:center;justify-content:space-between;gap:10px}.room{display:flex;flex-direction:column;min-width:0}.timeline{margin-top:14px;overflow:auto;padding-right:5px}.empty{color:#7890ad;text-align:center;padding:60px 10px}.msg{border-left:4px solid #60749a;background:#101f33;border-radius:8px;padding:12px 14px;margin:10px 0}.msg.teacher{border-color:#b27cff}.msg.student{border-color:#50c6a8}.msg.verifier{border-color:#f5b850}.msg.system{border-color:#6f89b6}.who{display:flex;justify-content:space-between;font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:#92a6c2;margin-bottom:8px}.content{white-space:pre-wrap;line-height:1.5;font-size:14px}.score{font-size:22px;font-weight:800}.pass{color:#65d3a6}.fail{color:#ff7d8e}.session{padding:10px;border:1px solid #263a58;border-radius:9px;margin:8px 0;cursor:pointer}.session:hover{background:#14233a}.session b{display:block;font-size:13px}.session small{color:#8fa1bb}@media(max-width:900px){main{grid-template-columns:1fr;height:auto}.room{min-height:70vh}}