:root{--bg:#0f1216;--card:#171c22;--line:#262d36;--fg:#dfe5ec;--dim:#8b97a6;--acc:#4f9dff;--ok:#3fbf6f;--err:#e5534b}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
body.center{display:flex;min-height:100vh;align-items:center;justify-content:center}
header{display:flex;gap:16px;align-items:center;padding:12px 20px;background:var(--card);border-bottom:1px solid var(--line);flex-wrap:wrap}
.brand{font-weight:700;letter-spacing:.3px}
nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
nav a{color:var(--dim);text-decoration:none;padding:6px 12px;border-radius:6px}
nav a:hover{color:var(--fg);background:#1e242c}
nav a.on{color:#fff;background:var(--acc)}
main{max-width:1100px;margin:0 auto;padding:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:28px;width:340px}
h1{margin:0 0 4px;font-size:20px}
h2{margin:0 0 12px;font-size:15px;color:var(--dim);text-transform:uppercase;letter-spacing:.6px}
.sub{margin:0 0 18px;color:var(--dim)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}
section{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px}
section.span2{grid-column:1/-1}
pre{margin:0;white-space:pre-wrap;word-break:break-word;font:12px/1.45 ui-monospace,Menlo,Consolas,monospace;color:#c9d4e0;max-height:320px;overflow:auto}
.msg{background:#182029;border:1px solid var(--line);border-left:3px solid var(--ok);border-radius:6px;padding:10px 12px;margin:0 0 14px}
.msg.err{border-left-color:var(--err)}
label{display:block;margin:10px 0 4px;color:var(--dim);font-size:12px}
input[type=text],input[type=password],select,input[type=file]{width:100%;padding:9px 10px;background:#0e1216;color:var(--fg);border:1px solid var(--line);border-radius:6px;font:inherit}
button{padding:9px 14px;background:var(--acc);color:#fff;border:0;border-radius:6px;cursor:pointer;font:inherit;margin-top:10px}
button:hover{filter:brightness(1.1)}
button.ghost{background:#2a323c;color:var(--fg)}
button.danger{background:var(--err)}
form.inline{display:inline-block;margin:0}
.btns{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.btns form.inline,.btns button{margin-top:0}
.hint{color:var(--dim);font-size:12px}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line);vertical-align:middle}
th{color:var(--dim);font-weight:600;font-size:12px;text-transform:uppercase}
td form{display:inline-block;margin:0}
td button{padding:5px 9px;margin:0;font-size:12px}
.tag{font-size:11px;padding:2px 8px;border-radius:10px}
.tag.on{background:rgba(63,191,111,.18);color:var(--ok)}
.tag.off{background:#2a323c;color:var(--dim)}
.warn{color:#d99b32}
.kv{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line)}
code{background:#0e1216;padding:1px 5px;border-radius:4px;font-size:12px}