:root {
  --bg: #0f1420; --panel: #171e2e; --panel2: #1e293b; --line: #2b3852;
  --ink: #e6edf7; --muted: #8ea0bd; --accent: #4f8cff; --accent-ink: #fff;
  --ok: #37d399; --err: #ff6b6b; --warn: #f0b429;
  --radius: 10px; --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 15px; line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: .85em; background: var(--panel2); padding: 1px 5px; border-radius: 5px; }
.muted { color: var(--muted); }
.small { font-size: .82em; }
.big { font-size: 1.3em; font-weight: 600; margin: .2em 0; }
.nowrap { white-space: nowrap; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .8rem 1.4rem; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.brand { font-weight: 700; }
.topbar nav { display: flex; gap: .4rem; align-items: center; }
.topbar nav a { padding: .4rem .8rem; border-radius: 8px; color: var(--muted); }
.topbar nav a:hover { background: var(--panel2); text-decoration: none; }
.topbar nav a.active { background: var(--accent); color: var(--accent-ink); }
.topbar nav a.logout { color: var(--err); }

main { max-width: 1080px; margin: 0 auto; padding: 1.6rem 1.4rem 4rem; }
.page-head { margin-bottom: 1.2rem; }
.page-head h1 { margin: 0 0 .2rem; font-size: 1.5rem; }
h2 { font-size: 1.05rem; margin: 0 0 .6rem; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; margin-bottom: 1.2rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.2rem; }
.grid .card { margin: 0; }

dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .3rem .9rem; }
dt { color: var(--muted); }
dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }

.pill { display: inline-block; padding: .12rem .55rem; border-radius: 999px; font-size: .8rem; font-weight: 600; }
.pill-ok { background: rgba(55,211,153,.15); color: var(--ok); }
.pill-err { background: rgba(255,107,107,.15); color: var(--err); }
.pill-muted { background: var(--panel2); color: var(--muted); }

.tbl { width: 100%; border-collapse: collapse; }
.tbl th { text-align: left; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); border-bottom: 1px solid var(--line); padding: .5rem .6rem; }
.tbl td { border-bottom: 1px solid var(--line); padding: .7rem .6rem; vertical-align: top; }
.tbl tr:last-child td { border-bottom: none; }
.actions { display: flex; flex-wrap: wrap; gap: .35rem; align-items: flex-start; }
.actions .test-result { flex-basis: 100%; }

.btn { display: inline-block; border: 1px solid var(--line); background: var(--panel2); color: var(--ink);
  padding: .45rem .85rem; border-radius: 8px; cursor: pointer; font-size: .9rem; font-family: inherit; }
.btn:hover { border-color: var(--accent); }
.btn-sm { padding: .3rem .6rem; font-size: .82rem; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-danger { color: var(--err); border-color: rgba(255,107,107,.4); background: transparent; }
.btn-danger:hover { border-color: var(--err); }
.btn-on { color: var(--ok); border-color: rgba(55,211,153,.4); }
.btn-off { color: var(--muted); }
.btn-icon { background: none; border: none; color: var(--muted); cursor: pointer; font-size: .8rem; padding: 0 .2rem; }
.btn-icon:disabled { opacity: .25; cursor: default; }
.btn:disabled { opacity: .5; cursor: default; }
.inline { display: inline; }
form.inline { margin: 0; }

.inline-details { display: inline-block; }
.inline-details summary { list-style: none; display: inline-block; }
.inline-details summary::-webkit-details-marker { display: none; }
.edit-form, .grid-form { display: grid; gap: .6rem; margin-top: .6rem; }
.grid-form { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); align-items: end; }
.grid-form .wide { grid-column: 1 / -1; }
.edit-form { background: var(--panel2); padding: .8rem; border-radius: 8px; }
label { display: block; font-size: .82rem; color: var(--muted); }
input, select { width: 100%; margin-top: .25rem; padding: .5rem .6rem; background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; color: var(--ink); font-family: inherit; font-size: .9rem; }
input:focus, select:focus { outline: none; border-color: var(--accent); }

.banner { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1.1rem; font-size: .9rem; }
.banner-ok { background: rgba(55,211,153,.12); color: var(--ok); border: 1px solid rgba(55,211,153,.3); }
.banner-err { background: rgba(255,107,107,.12); color: var(--err); border: 1px solid rgba(255,107,107,.3); }

.test-result { margin-top: .5rem; }
.test-ok, .test-err { padding: .5rem .7rem; border-radius: 8px; font-size: .82rem; }
.test-ok { background: rgba(55,211,153,.1); border: 1px solid rgba(55,211,153,.3); }
.test-err { background: rgba(255,107,107,.1); border: 1px solid rgba(255,107,107,.3); }
.test-result pre { white-space: pre-wrap; word-break: break-word; margin: .4rem 0 0; font-family: var(--mono); font-size: .78rem; max-height: 240px; overflow: auto; }

.log-block { white-space: pre-wrap; word-break: break-word; background: var(--panel2); padding: .8rem; border-radius: 8px;
  font-family: var(--mono); font-size: .85rem; max-height: 420px; overflow: auto; margin: 0; }

/* --- Usage dashboard: stat cards + CSS-only bar charts (no JS charting library) --- */
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1.2rem; margin-bottom: 1.2rem; }
.stat-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; }
.stat-value { font-size: 1.6rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat-label { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; margin-top: .2rem; }

.days-selector { display: flex; gap: .4rem; margin-bottom: 1.1rem; }
.days-selector a { padding: .35rem .8rem; border-radius: 8px; border: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.days-selector a:hover { text-decoration: none; border-color: var(--accent); }
.days-selector a.active { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.bars { display: flex; flex-direction: column; gap: .5rem; }
.bar-row { display: grid; grid-template-columns: 110px 1fr 50px; align-items: center; gap: .6rem; }
.bar-row .bar-label { font-size: .82rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-row .bar-count { text-align: right; font-variant-numeric: tabular-nums; font-size: .85rem; }
.bar-track { background: var(--panel2); border-radius: 6px; height: 14px; overflow: hidden; }
.bar-fill { background: var(--accent); height: 100%; border-radius: 6px; min-width: 2px; }
.bar-fill.bar-ok { background: var(--ok); }
.bar-fill.bar-err { background: var(--err); }

.checkbox-label { display: flex !important; align-items: center; gap: .5rem; font-size: .82rem; color: var(--muted); }
.checkbox-label input[type="checkbox"] { width: auto; margin-top: 0; }

.login-wrap { min-height: 80vh; display: flex; align-items: center; justify-content: center; }
.login-card { width: 340px; max-width: 90vw; }
.login-card h1 { font-size: 1.3rem; margin: 0 0 .3rem; }
.login-card label { margin-top: .8rem; }
.login-card .btn { width: 100%; margin-top: 1rem; }