:root{color-scheme:dark;--bg:#071522;--panel:#0d2435;--line:#1d4a63;--text:#eaf7ff;--muted:#9fc0d2;--cyan:#17c1da;--green:#2dcc8f;--red:#ff6270}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,Segoe UI,sans-serif}.topbar{display:flex;justify-content:space-between;align-items:center;padding:18px 4vw;background:#081c2c;border-bottom:1px solid var(--line)}.topbar strong{font-size:22px;color:var(--cyan)}nav{display:flex;gap:20px;align-items:center}a{color:#9eefff;text-decoration:none}main{max-width:1440px;margin:auto;padding:30px 4vw}h1{font-size:28px;margin:0 0 8px}h2{font-size:18px}p{color:var(--muted)}.inline{display:inline}.link-button{background:none;border:0;color:#9eefff;padding:0}.button,button{display:inline-block;background:#087db5;border:0;border-radius:8px;color:#fff;padding:10px 16px;font-weight:700;cursor:pointer}.page-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.summary{background:var(--panel);padding:12px 18px;border-radius:10px}.device-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px}.device-card,.panel,.login-card,.one-time-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;color:var(--text)}.device-card:hover{border-color:var(--cyan)}.card-head{display:flex;justify-content:space-between}.badge{font-size:12px;padding:4px 9px;border-radius:20px}.badge.online{background:#174d3d;color:#8ff0c8}.badge.offline{background:#552933;color:#ffabb3}dl{margin:0}.device-card dl,.details{display:grid;grid-template-columns:1fr 1fr;gap:10px}.device-card dl div,.details div{background:#0a1d2c;padding:9px;border-radius:7px}dt{font-size:12px;color:var(--muted)}dd{margin:3px 0 0;font-weight:700}.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:20px 0}.metrics article{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:15px}.metrics span{display:block;color:var(--muted);font-size:12px}.metrics strong{font-size:19px}.panel{margin-bottom:18px}.admin-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px;margin:20px 0}.login-card{max-width:430px;margin:7vh auto}.one-time-card{max-width:720px;margin:5vh auto}.qr{display:block;width:240px;max-width:100%;padding:10px;margin:20px 0;background:#fff;border-radius:10px}.secret-value{display:block;margin:8px 0 18px;padding:13px;background:#06131f;border:1px solid var(--line);border-radius:7px;overflow-wrap:anywhere;font:700 16px ui-monospace,monospace}.secret-value.small{font-size:12px}.warning{color:#ffd27e}form label{display:block;color:var(--muted);margin:10px 0}input,select{display:block;width:100%;margin-top:5px;padding:10px;border-radius:7px;border:1px solid var(--line);background:#06131f;color:var(--text)}.assignment-form{display:grid;grid-template-columns:minmax(180px,.6fr) minmax(300px,2fr) auto;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}.assignment-form span{display:block;color:var(--muted);font-size:12px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line);vertical-align:top}.flash{padding:12px 15px;border-radius:8px;margin-bottom:18px;overflow-wrap:anywhere}.flash.success{background:#174d3d}.flash.danger{background:#552933}.empty{padding:40px;background:var(--panel);border-radius:12px;color:var(--muted)}@media(max-width:700px){.topbar,.page-heading{align-items:flex-start;flex-direction:column;gap:12px}nav{flex-wrap:wrap}.device-card dl,.details{grid-template-columns:1fr}.assignment-form{grid-template-columns:1fr}table{font-size:12px}}