:root {
    --bg: #f5f6f8;
    --panel: #fff;
    --text: #1f2328;
    --muted: #6a737d;
    --line: #e1e4e8;
    --accent: #2f6fde;
    --accent-text: #fff;
    --good: #1a7f37;
    --bad: #cf222e;
    --busy: #9a6700;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0d1117;
        --panel: #161b22;
        --text: #e6edf3;
        --muted: #8b949e;
        --line: #30363d;
        --accent: #4c8dff;
        --good: #3fb950;
        --bad: #f85149;
        --busy: #d29922;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main { max-width: 1040px; margin: 0 auto; padding: 24px 16px 48px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 12px; }

a { color: var(--accent); }
code { font-size: 12px; }

.status { min-height: 22px; margin: 4px 0 14px; font-weight: 500; }
.status.ok { color: var(--good); }
.status.err { color: var(--bad); }
.status.busy { color: var(--busy); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 16px; }
.card, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; }
.card { padding: 14px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.card .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.card .value { font-size: 16px; font-weight: 600; }
.card .sub { color: var(--muted); font-size: 12px; }
.good { color: var(--good); }
.bad { color: var(--bad); }
.muted { color: var(--muted); }

.panel { padding: 18px; margin-bottom: 16px; }

.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.sep { flex: 1; }

.btn {
    display: inline-block;
    border: 1px solid var(--line);
    background: var(--panel);
    color: var(--text);
    border-radius: 6px;
    padding: 7px 12px;
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { border-color: var(--accent); }
.btn:disabled { opacity: .5; cursor: progress; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.ghost { background: transparent; }
.btn.small { padding: 3px 9px; font-size: 13px; }
.btn.danger:hover { border-color: var(--bad); color: var(--bad); }

input, select, textarea {
    width: 100%;
    margin-top: 4px;
    padding: 7px 9px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--bg);
    color: var(--text);
    font: inherit;
}
input[type=checkbox] { width: auto; margin: 0; }
input[type=month] { width: auto; margin: 0; }
textarea { font-family: ui-monospace, monospace; font-size: 13px; }

label { display: block; margin-bottom: 10px; color: var(--muted); font-size: 13px; }
label input, label select, label textarea { color: var(--text); }

fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px 4px; margin: 0 0 14px; }
legend { padding: 0 6px; font-weight: 600; }

.grid2, .grid3 { display: grid; gap: 0 12px; }
.grid2 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid3 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.hint { color: var(--muted); font-size: 12px; margin: -4px 0 10px; }

.groups-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 6px; color: var(--muted); font-size: 13px; }
.groups { max-height: 260px; overflow: auto; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; margin-bottom: 12px; }
.group { display: flex; align-items: center; gap: 8px; margin: 0; padding: 3px 0; color: var(--text); }
.group .sort { width: 64px; margin: 0; padding: 2px 6px; }

.months { width: 100%; border-collapse: collapse; margin-top: 16px; }
.months th, .months td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.months th { color: var(--muted); font-weight: 500; font-size: 12px; }
.months .rate { display: flex; gap: 6px; align-items: center; }
.months .rate input { width: 90px; margin: 0; padding: 3px 6px; }
.months .actions { text-align: right; }

.log { margin: 0; max-height: 280px; overflow: auto; font-size: 12px; background: var(--bg); border-radius: 6px; padding: 10px; white-space: pre-wrap; }

@media (max-width: 720px) {
    .months { display: block; overflow-x: auto; }
}

.top form { margin: 0; }
.login { max-width: 380px; padding-top: 12vh; }
.login h1 { margin-bottom: 16px; }
.login .btn { width: 100%; margin-top: 4px; }