:root {
  color-scheme: dark;
  --bg: #0f1218; --card: #181c24; --text: #e6e9ef; --muted: #9aa3b2; --line: #2a303c;
  --accent: #4c8dff; --accent-hover: #6ba1ff; --ok: #5fd39a; --ok-bg: #153024;
  --warn: #f2c14e; --warn-bg: #352a10; --bad: #ff8a80; --bad-bg: #3a1c1b; --grey-bg: #242a35;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 -apple-system, "Segoe UI", Roboto, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header { background: #141821; border-bottom: 1px solid var(--line); color: #fff; }
header .wrap { display: flex; align-items: center; gap: 24px; height: 56px; }
header .logo { font-weight: 700; font-size: 17px; color: #fff; }
header nav { display: flex; gap: 4px; flex: 1; }
header nav a { color: #c9cfdb; padding: 8px 12px; border-radius: 6px; }
header nav a:hover, header nav a.on { background: #262d3a; color: #fff; text-decoration: none; }
header form button { background: none; border: 1px solid #4b5468; color: #c9cfdb; padding: 6px 12px; border-radius: 6px; cursor: pointer; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
main { padding: 24px 0 60px; }
h1 { font-size: 24px; margin: 0 0 20px; }
h2 { font-size: 18px; margin: 0 0 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.grid { display: grid; gap: 20px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 860px) { .grid.cols-4, .grid.cols-2 { grid-template-columns: 1fr 1fr; } header nav a { padding: 8px 6px; } }
@media (max-width: 560px) { .grid.cols-4, .grid.cols-2 { grid-template-columns: 1fr; } header .wrap { flex-wrap: wrap; height: auto; padding: 8px 20px; } }
.stat .num { font-size: 28px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 13px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: none; }
.table-wrap { overflow-x: auto; }
.btn, button.btn { display: inline-block; background: var(--accent); color: #fff; border: none; padding: 9px 16px; border-radius: 7px; font: inherit; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.secondary { background: var(--card); color: var(--text); border: 1px solid var(--line); }
.btn.secondary:hover { background: var(--grey-bg); }
.btn.danger { background: #c0392b; }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.link-btn { background: none; border: none; color: var(--accent); cursor: pointer; padding: 0; font: inherit; font-size: 13px; }
.link-btn.danger { color: var(--bad); }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid #3a4252; border-radius: 7px; font: inherit; background: #11151c; color: var(--text); }
textarea { font-family: Consolas, "Courier New", monospace; font-size: 13px; }
label { display: block; font-weight: 600; margin: 12px 0 6px; font-size: 14px; }
label.inline { display: inline-flex; align-items: center; gap: 8px; font-weight: 400; margin: 10px 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row > .grow { flex: 1; min-width: 180px; }
.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.error { background: var(--bad-bg); color: var(--bad); }
.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.bad { background: var(--bad-bg); color: var(--bad); }
.badge.grey { background: var(--grey-bg); color: var(--muted); }
.progress { height: 8px; background: var(--grey-bg); border-radius: 4px; overflow: hidden; margin: 8px 0; }
.progress > div { height: 100%; background: var(--accent); }
pre.log { background: #11151d; color: #d7dde8; padding: 14px; border-radius: 8px; font-size: 13px; white-space: pre-wrap; max-height: 520px; overflow: auto; margin: 0; }
.preview { width: 100%; height: 520px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.busy-bar { background: var(--warn-bg); color: var(--warn); padding: 8px 0; font-size: 14px; }
.tabs { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
.tabs a { padding: 6px 12px; border-radius: 6px; background: var(--grey-bg); color: var(--text); font-size: 14px; }
.tabs a.on { background: var(--accent); color: #fff; }
.login-box { max-width: 380px; margin: 80px auto; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.hint { background: var(--grey-bg); border-radius: 8px; padding: 12px 14px; font-size: 14px; }
.grid > * { min-width: 0; }