:root, html[data-theme="dark"] {
  --bg: #0d1117;
  --bg2: #161b22;
  --card: #161b22;
  --border: #30363d;
  --border-soft: #21262d;
  --text: #e6edf3;
  --muted: #8b949e;
  --green: #3fb950;
  --red: #f85149;
  --amber: #d29922;
  --gray: #484f58;
  --blue: #58a6ff;
  --accent: #1f6feb;
  --accent-hover: #388bfd;
  --hover: #21262d;
  --hover-strong: #30363d;
  --row-hover: #1c2129;
  --down-bg: rgba(248, 81, 73, .07);
  --down-bg-hover: rgba(248, 81, 73, .12);
  --accent-bg: rgba(31, 111, 235, .2);
  --green-bg: rgba(63, 185, 80, .15);
  --green-border: rgba(63, 185, 80, .33);
  --red-bg: rgba(248, 81, 73, .15);
  --red-border: rgba(248, 81, 73, .33);
  --gray-bg: rgba(72, 79, 88, .15);
  --overlay: rgba(1, 4, 9, .67);
  --radius: 10px;
  --mono: 'SF Mono', ui-monospace, Menlo, Consolas, monospace;
}

html[data-theme="light"] {
  --bg: #f6f8fa;
  --bg2: #ffffff;
  --card: #ffffff;
  --border: #d0d7de;
  --border-soft: #e8ecf1;
  --text: #1f2328;
  --muted: #656d76;
  --green: #1a7f37;
  --red: #cf222e;
  --amber: #9a6700;
  --gray: #8c959f;
  --blue: #0969da;
  --accent: #0969da;
  --accent-hover: #218bff;
  --hover: #eaeef2;
  --hover-strong: #d0d7de;
  --row-hover: #f3f4f6;
  --down-bg: rgba(207, 34, 46, .06);
  --down-bg-hover: rgba(207, 34, 46, .1);
  --accent-bg: rgba(9, 105, 218, .12);
  --green-bg: rgba(26, 127, 55, .12);
  --green-border: rgba(26, 127, 55, .35);
  --red-bg: rgba(207, 34, 46, .1);
  --red-border: rgba(207, 34, 46, .35);
  --gray-bg: rgba(140, 149, 159, .14);
  --overlay: rgba(31, 35, 40, .4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

.hidden { display: none !important; }

body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
}

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.logo { font-size: 26px; }
.topbar h1 { font-size: 16px; font-weight: 600; }
.topbar .sub { font-size: 11px; color: var(--muted); }
.topbar .brand { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.topbar nav { display: flex; gap: 4px; margin-left: auto; }
.topbar nav a {
  color: var(--muted); text-decoration: none; padding: 7px 14px;
  border-radius: 8px; font-weight: 500;
}
.topbar nav a:hover { color: var(--text); background: var(--hover); }
.topbar nav a.active { color: var(--text); background: var(--hover); }

main { max-width: 1200px; margin: 0 auto; padding: 24px; }

/* ---------- cards ---------- */
.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
}
.card .k { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.card .v { font-size: 24px; font-weight: 700; margin-top: 2px; }
.card .v.up { color: var(--green); }
.card .v.down { color: var(--red); }
.card .v small { font-size: 12px; color: var(--muted); font-weight: 400; }

/* ---------- toolbar ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar input[type=search] {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  padding: 8px 12px; border-radius: 8px; width: 240px; outline: none;
}
.toolbar input[type=search]:focus { border-color: var(--blue); }
.chip {
  padding: 6px 12px; border-radius: 20px; font-size: 12px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg2); color: var(--muted);
}
.chip.active { background: var(--accent-bg); border-color: var(--accent); color: var(--text); }
.spacer { flex: 1; }

/* ---------- table ---------- */
.table-wrap {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow-x: auto;
}
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border);
  font-weight: 600; white-space: nowrap;
}
td { padding: 11px 14px; border-top: 1px solid var(--border-soft); vertical-align: middle; }
tbody tr:hover { background: var(--row-hover); }
tbody tr.is-down { background: var(--down-bg); }
tbody tr.is-down:hover { background: var(--down-bg-hover); }

/* actions column stays pinned to the right edge, always visible */
.table-wrap th:last-child, .table-wrap td:last-child {
  position: sticky; right: 0; background: var(--card); white-space: nowrap;
  box-shadow: -6px 0 6px -6px rgba(0, 0, 0, .3);
}
tbody tr:hover td:last-child { background: var(--row-hover); }
tbody tr.is-down td:last-child { background: linear-gradient(var(--down-bg), var(--down-bg)), var(--card); }
tbody tr.is-down:hover td:last-child { background: linear-gradient(var(--down-bg-hover), var(--down-bg-hover)), var(--row-hover); }
tr.clickable { cursor: pointer; }

.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot.up { background: var(--green); box-shadow: 0 0 8px #3fb95066; }
.dot.down { background: var(--red); box-shadow: 0 0 8px #f8514966; animation: pulse 1.2s infinite; }
.dot.paused, .dot.unknown { background: var(--gray); }
@keyframes pulse { 50% { opacity: .4; } }

.host-label { font-weight: 600; }
.target { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.target .port { color: var(--blue); }
.lat { font-family: var(--mono); }
.lat.good { color: var(--green); }
.lat.warn { color: var(--amber); }
.lat.bad { color: var(--red); }
.pct { font-family: var(--mono); font-size: 12px; }

/* uptime bar strip */
.bars { display: flex; gap: 2px; align-items: flex-end; height: 26px; }
.bars i {
  flex: 1; min-width: 3px; max-width: 8px; border-radius: 2px;
  background: var(--gray); height: 30%;
}
.bars i.ok { background: var(--green); height: 100%; }
.bars i.part { background: var(--amber); height: 70%; }
.bars i.bad { background: var(--red); height: 100%; }

/* ---------- buttons ---------- */
.btn {
  background: var(--hover); color: var(--text); border: 1px solid var(--border);
  padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 500;
}
.btn:hover { background: var(--hover-strong); }
.btn.primary { background: var(--accent); border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-hover); }
.btn.danger { color: var(--red); }
.btn.danger:hover { background: var(--red-bg); border-color: var(--red); }
.btn.ghost { background: transparent; }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.icon-btn { background: none; border: none; cursor: pointer; font-size: 15px; padding: 4px 6px; border-radius: 6px; opacity: .85; color: var(--muted); }
.icon-btn:hover { opacity: 1; background: var(--hover); color: var(--text); }

/* ---------- forms ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 5px; font-weight: 500; }
.field input, .field select {
  width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text);
  padding: 9px 12px; border-radius: 8px; font-size: 14px; outline: none;
}
.field input:focus { border-color: var(--blue); }
.field .hint { font-size: 11px; color: var(--muted); margin-top: 4px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.check input { width: auto; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; }

/* ---------- detail page ---------- */
.back { color: var(--muted); text-decoration: none; font-size: 13px; display: inline-block; margin-bottom: 14px; }
.back:hover { color: var(--text); }
.detail-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.detail-head h2 { font-size: 20px; }
.pill {
  font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 12px;
  text-transform: uppercase; letter-spacing: .04em;
}
.pill.up { background: var(--green-bg); color: var(--green); }
.pill.down { background: var(--red-bg); color: var(--red); }
.pill.paused, .pill.unknown { background: var(--gray-bg); color: var(--muted); }
.chart-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px; margin-bottom: 16px;
}
.chart-card h3 { font-size: 13px; color: var(--muted); margin-bottom: 12px; text-transform: uppercase; letter-spacing: .05em; }
.chart-box { position: relative; height: 260px; }
.chart-box.tall { height: 320px; }

/* incidents */
.inc-row { display: flex; gap: 10px; padding: 9px 0; border-top: 1px solid var(--border-soft); font-size: 13px; align-items: baseline; }
.inc-row:first-of-type { border-top: none; }
.inc-dot { flex: none; width: 8px; height: 8px; border-radius: 50%; margin-top: 5px; }
.inc-when { color: var(--muted); font-family: var(--mono); font-size: 12px; white-space: nowrap; }
.inc-cause { color: var(--red); font-family: var(--mono); font-size: 12px; }
.inc-host { font-weight: 600; }

/* settings */
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .settings-grid { grid-template-columns: 1fr; } .row2 { grid-template-columns: 1fr; } }
.section-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.section-desc { font-size: 12px; color: var(--muted); margin-bottom: 14px; }
.sync-result { margin-top: 10px; font-size: 13px; padding: 10px; border-radius: 8px; display: none; }
.sync-result.ok { display: block; background: var(--green-bg); border: 1px solid var(--green-border); }
.sync-result.err { display: block; background: var(--red-bg); border: 1px solid var(--red-border); }
.print-row { display: flex; align-items: center; gap: 10px; padding: 9px 4px; border-top: 1px solid var(--border-soft); }
.meta-line { font-size: 12px; color: var(--muted); margin-top: 8px; }

/* empty state */
.empty { text-align: center; padding: 60px 20px; color: var(--muted); }
.empty .big { font-size: 42px; margin-bottom: 10px; }

/* modal */
.modal {
  position: fixed; inset: 0; background: var(--overlay); z-index: 100;
  display: flex; align-items: flex-start; justify-content: center; padding: 60px 16px;
  backdrop-filter: blur(2px);
}
.modal-card {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 12px;
  width: 100%; max-width: 460px; padding: 22px; box-shadow: 0 20px 60px #00000088;
}
.modal-card h3 { margin-bottom: 16px; }

/* toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--hover); border: 1px solid var(--border); color: var(--text);
  padding: 10px 18px; border-radius: 10px; font-size: 13px; z-index: 200;
  box-shadow: 0 8px 30px #00000066;
}
.toast.err { border-color: var(--red); }

.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
@media (max-width: 700px) {
  .topbar { flex-wrap: wrap; gap: 10px; }
  .topbar nav { margin-left: 0; }
  main { padding: 14px; }
  .hide-sm { display: none; }
}