:root {
  --bg: #f4f6fb;
  --bg-soft: #eef1f7;
  --panel: #ffffff;
  --panel-2: #f7f9fc;
  --border: #dde3ee;
  --border-soft: #e8ecf4;
  --text: #1a2233;
  --text-dim: #5c6880;
  --text-faint: #8a95ab;
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --accent-glow: rgba(99, 102, 241, 0.25);
  --ok: #16a34a;
  --ok-soft: rgba(22, 163, 74, 0.12);
  --warn: #d97706;
  --warn-soft: rgba(217, 119, 6, 0.13);
  --partial: #ea580c;
  --down: #dc2626;
  --down-soft: rgba(220, 38, 38, 0.11);
  --unknown: #c2cbdb;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 8px 30px rgba(23, 43, 77, 0.08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1100px 500px at 15% -10%, rgba(99, 102, 241, 0.12), transparent 60%),
    radial-gradient(900px 450px at 100% 0%, rgba(139, 92, 246, 0.10), transparent 55%),
    var(--bg);
}

a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .inner {
  height: 62px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 650; font-size: 16px; letter-spacing: .2px; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center; box-shadow: 0 4px 16px var(--accent-glow);
  font-size: 15px;
}
.header-actions { display: flex; align-items: center; gap: 10px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--panel);
  color: var(--text); cursor: pointer; font-weight: 550;
  transition: all .16s ease; white-space: nowrap;
}
.btn:hover { border-color: var(--accent); background: var(--panel-2); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent; color: #fff; box-shadow: 0 4px 16px var(--accent-glow);
}
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--down); border-color: rgba(239,68,68,.4); }
.btn.danger:hover { background: var(--down-soft); border-color: var(--down); }
.btn.small { padding: 5px 10px; font-size: 12.5px; border-radius: 7px; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- Window / segmented control ---------- */
.segmented {
  display: inline-flex; padding: 3px; gap: 2px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
}
.segmented button {
  border: none; background: transparent; color: var(--text-dim);
  padding: 6px 12px; border-radius: 7px; cursor: pointer; font-weight: 550; transition: all .15s;
}
.segmented button:hover { color: var(--text); }
.segmented button.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; box-shadow: 0 2px 10px var(--accent-glow);
}

/* ---------- Overview banner ---------- */
.overview {
  margin: 26px 0; padding: 26px;
  border-radius: var(--radius); border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.overview::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(600px 200px at 100% 0, rgba(99,102,241,.10), transparent 60%);
  pointer-events: none;
}
.overview .headline { display: flex; align-items: center; gap: 14px; }
.big-dot { width: 15px; height: 15px; border-radius: 50%; position: relative; flex: none; }
.big-dot::after {
  content: ""; position: absolute; inset: -5px; border-radius: 50%;
  background: currentColor; opacity: .25; animation: pulse 2s infinite;
}
@keyframes pulse { 0% { transform: scale(.8); opacity: .5;} 70% { transform: scale(1.6); opacity: 0;} 100% { opacity: 0;} }
.overview h1 { font-size: 21px; font-weight: 650; }
.overview .sub { color: var(--text-dim); margin-top: 2px; font-size: 13px; }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 22px; }
.metric {
  background: var(--panel-2); border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm); padding: 14px 16px;
}
.metric .label { color: var(--text-faint); font-size: 12px; font-weight: 550; text-transform: uppercase; letter-spacing: .5px; }
.metric .value { font-size: 24px; font-weight: 680; margin-top: 6px; font-variant-numeric: tabular-nums; }
.metric .value small { font-size: 13px; color: var(--text-dim); font-weight: 500; }

/* ---------- Site cards ---------- */
.sites { display: flex; flex-direction: column; gap: 16px; padding-bottom: 60px; }
.site-card {
  border: 1px solid var(--border); border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  overflow: hidden; transition: border-color .18s;
}
.site-card:hover { border-color: var(--accent); }
.site-head {
  display: flex; align-items: center; gap: 14px; padding: 16px 18px; cursor: pointer;
  user-select: none;
}
.site-head .title { display: flex; align-items: center; gap: 11px; min-width: 0; flex: 1 1 auto; }
.site-head .title > div { min-width: 0; }
.site-head .name { font-weight: 620; font-size: 15.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.site-head .remark { color: var(--text-faint); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.site-head .spacer { flex: 1; }
.site-summary { display: flex; align-items: center; gap: 20px; }
.summary-item { text-align: right; }
.summary-item .k { font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .4px; white-space: nowrap; }
.summary-item .v { font-weight: 620; font-variant-numeric: tabular-nums; white-space: nowrap; }
.chev { color: var(--text-faint); transition: transform .2s; font-size: 12px; }
.site-card.open .chev { transform: rotate(90deg); }

.site-body { display: none; padding: 4px 18px 20px; border-top: 1px solid var(--border-soft); }
.site-card.open .site-body { display: block; }

/* site-level timeline — always visible even when the card is collapsed */
.site-timeline-wrap { padding: 4px 18px 16px; }

/* ---------- Monitor rows ---------- */
.monitors { display: flex; flex-direction: column; }
.monitor {
  padding: 13px 2px; border-bottom: 1px solid var(--border-soft);
}
.monitor:last-child { border-bottom: none; }
.monitor-top { display: flex; align-items: center; gap: 12px; margin-bottom: 9px; }
.monitor-name { display: flex; align-items: center; gap: 9px; min-width: 0; font-weight: 550; }
.monitor-name .model { font-family: var(--mono); font-size: 12.5px; color: var(--text-dim); }
.monitor-top .spacer { flex: 1; }
.monitor-stats { display: flex; gap: 18px; align-items: center; }
.mstat { text-align: right; font-variant-numeric: tabular-nums; }
.mstat .k { font-size: 10.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .3px; display: block; white-space: nowrap; }
.mstat .v { font-weight: 600; font-size: 13px; }

/* ---------- Status dot / badge ---------- */
.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; box-shadow: 0 0 0 3px rgba(23,43,77,.04); }
.dot.operational, .big-dot.operational, .txt.operational { color: var(--ok); background: var(--ok); }
.dot.degraded, .big-dot.degraded { color: var(--warn); background: var(--warn); }
.dot.partial, .big-dot.partial { color: var(--partial); background: var(--partial); }
.dot.down, .big-dot.down { color: var(--down); background: var(--down); }
.dot.unknown, .big-dot.unknown { color: var(--unknown); background: var(--unknown); }
.dot.operational, .dot.degraded, .dot.partial, .dot.down { background: currentColor; }

.badge {
  font-size: 11.5px; font-weight: 600; padding: 3px 9px; border-radius: 20px;
  border: 1px solid transparent;
}
.badge.operational { color: var(--ok); background: var(--ok-soft); border-color: rgba(34,197,94,.3); }
.badge.degraded { color: var(--warn); background: var(--warn-soft); border-color: rgba(245,158,11,.3); }
.badge.partial { color: var(--partial); background: rgba(249,115,22,.15); border-color: rgba(249,115,22,.3); }
.badge.down { color: var(--down); background: var(--down-soft); border-color: rgba(239,68,68,.3); }
.badge.unknown { color: var(--text-dim); background: rgba(90,102,130,.15); border-color: var(--border); }

/* ---------- Uptime timeline bars ---------- */
.timeline { display: flex; align-items: flex-end; gap: 2px; height: 34px; }
.timeline.slim { height: 26px; }
.tl-bar {
  flex: 1 1 0; min-width: 2px; height: 100%; border-radius: 3px;
  background: var(--unknown); position: relative; transition: transform .12s, filter .12s;
  cursor: pointer;
}
/* Fine-grained uptime color scale (green -> lime -> amber -> orange -> red),
   inspired by sub2api but with more tiers. Top-lighter gradient for depth. */
.tl-bar.u-100 { background: linear-gradient(180deg, #34e373, #16a34a); }
.tl-bar.u-99  { background: linear-gradient(180deg, #6ee787, #22c55e); }
.tl-bar.u-97  { background: linear-gradient(180deg, #a6e635, #65a30d); }
.tl-bar.u-90  { background: linear-gradient(180deg, #ffd43b, #eab308); }
.tl-bar.u-75  { background: linear-gradient(180deg, #ffc14d, #f59e0b); }
.tl-bar.u-50  { background: linear-gradient(180deg, #ff9f45, #ea580c); }
.tl-bar.u-25  { background: linear-gradient(180deg, #ff7a5c, #dc2626); }
.tl-bar.u-1   { background: linear-gradient(180deg, #f87171, #b91c1c); }
.tl-bar.u-0   { background: linear-gradient(180deg, #ef4444, #991b1b); }
.tl-bar.u-none { background: var(--unknown); opacity: .45; }
.tl-bar:hover { transform: scaleY(1.12); filter: brightness(1.08); }
.timeline-axis { display: flex; justify-content: space-between; color: var(--text-faint); font-size: 11px; margin-top: 6px; }

/* tooltip */
.tooltip {
  position: fixed; z-index: 100; pointer-events: none;
  background: #ffffff; color: var(--text); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 11px; font-size: 12px; box-shadow: 0 6px 24px rgba(23,43,77,.14);
  max-width: 260px; opacity: 0; transition: opacity .12s; white-space: nowrap;
}
.tooltip.show { opacity: 1; }
.tooltip .tt-row { display: flex; justify-content: space-between; gap: 14px; }
.tooltip .tt-time { color: var(--text-faint); margin-bottom: 4px; font-size: 11px; }

/* ---------- misc ---------- */
.muted { color: var(--text-dim); }
.faint { color: var(--text-faint); }
.center { text-align: center; }
.empty {
  padding: 60px 20px; text-align: center; color: var(--text-faint);
  border: 1px dashed var(--border); border-radius: var(--radius); background: var(--bg-soft);
}
.spin { width: 34px; height: 34px; border: 3px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: rot .8s linear infinite; margin: 40px auto; }
@keyframes rot { to { transform: rotate(360deg); } }
.footer { text-align: center; color: var(--text-faint); font-size: 12.5px; padding: 30px 0 40px; }
.footer a { color: var(--text-dim); text-decoration: underline; text-underline-offset: 2px; }
.refresh-note { color: var(--text-faint); font-size: 12px; display: flex; align-items: center; gap: 6px; }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px var(--ok); animation: blink 2s infinite; }
@keyframes blink { 50% { opacity: .3; } }

/* ---------- Provider sites grid ---------- */
.provider-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin-bottom: 32px; }
.provider-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; display: flex; flex-direction: column; gap: 12px;
  box-shadow: var(--shadow); transition: border-color .18s;
}
.provider-card:hover { border-color: #c2cbdb; }
.provider-card.online  { border-left: 3px solid var(--ok); }
.provider-card.offline { border-left: 3px solid var(--down); }
.provider-card.unknown { border-left: 3px solid var(--unknown); }
.pc-head { display: flex; align-items: flex-start; gap: 10px; }
.pc-dot { width: 11px; height: 11px; border-radius: 50%; flex: none; margin-top: 3px; }
.pc-dot.online  { background: var(--ok); box-shadow: 0 0 6px rgba(22,163,74,.5); }
.pc-dot.offline { background: var(--down); box-shadow: 0 0 6px rgba(220,38,38,.4); }
.pc-dot.unknown { background: var(--unknown); }
.pc-name { font-weight: 620; font-size: 15px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pc-url  { color: var(--text-faint); font-size: 11.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 2px; }
.pc-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.pc-metric { background: var(--bg-soft); border-radius: 8px; padding: 9px 10px; text-align: center; }
.pc-metric .k { font-size: 10.5px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .3px; display: block; white-space: nowrap; }
.pc-metric .v { font-size: 16px; font-weight: 660; margin-top: 4px; font-variant-numeric: tabular-nums; display: block; }
.pc-error { font-size: 12px; color: var(--down); background: var(--down-soft); border: 1px solid rgba(220,38,38,.2); border-radius: 7px; padding: 7px 10px; word-break: break-word; }
.pc-footer { display: flex; justify-content: space-between; align-items: center; font-size: 11.5px; color: var(--text-faint); }
.pc-version { font-family: var(--mono); background: var(--bg-soft); padding: 1px 7px; border-radius: 5px; font-size: 11px; }
.pc-uptime { font-weight: 550; }
.provider-source-label {
  font-size: 11px; color: var(--text-faint); text-transform: uppercase; letter-spacing: .5px;
  margin: 20px 0 8px; font-weight: 600;
}
.provider-source-label:first-child { margin-top: 0; }

/* Model detail inside provider card */
.pc-expand-btn { margin-top: 6px; width: 100%; justify-content: center; font-size: 12px; }
.pc-model-detail { margin-top: 8px; }
.pc-model-list { display: flex; flex-direction: column; gap: 6px; max-height: 320px; overflow-y: auto; }
.pc-model-row {
  display: flex; align-items: center; gap: 8px; padding: 7px 10px;
  background: var(--bg-soft); border-radius: 7px; font-size: 12.5px;
  border-left: 3px solid transparent;
}
.pc-model-row.ok   { border-left-color: var(--ok); }
.pc-model-row.down { border-left-color: var(--down); }
.pc-mdot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.pc-mdot.ok   { background: var(--ok); }
.pc-mdot.down { background: var(--down); }
.pc-mname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 550; }
.pc-mstats { display: flex; gap: 8px; align-items: center; flex: none; }
.pc-mpct { font-weight: 600; padding: 1px 6px; border-radius: 5px; font-size: 12px; }
.pc-mpct.ok      { color: var(--ok); background: var(--ok-soft); }
.pc-mpct.warn    { color: var(--warn); background: var(--warn-soft); }
.pc-mpct.bad     { color: var(--down); background: var(--down-soft); }
.pc-mpct.unknown { color: var(--text-faint); }
.pc-mlat  { color: var(--text-dim); font-family: var(--mono); font-size: 11px; }
.pc-mcount { color: var(--text-faint); font-size: 11px; }
.pc-merr  { color: var(--down); font-size: 11.5px; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- responsive ---------- */

/* Tablet */
@media (max-width: 860px) {
  .container { padding: 0 16px; }
  .overview { padding: 22px; margin: 20px 0; }
}

/* Phone */
@media (max-width: 640px) {
  .container { padding: 0 13px; }

  /* Header: title on row 1, controls wrap to a full-width row below */
  .site-header .inner { flex-wrap: wrap; height: auto; min-height: 54px; padding: 9px 0; gap: 8px; }
  .brand { flex: 1 1 auto; font-size: 15px; }
  .brand .logo { width: 28px; height: 28px; }
  .header-actions { flex: 1 1 100%; justify-content: space-between; gap: 8px; }
  .refresh-note { display: none; }
  #granPicker { flex: 1 1 auto; }
  #granPicker button { flex: 1; padding: 8px 6px; }
  .header-actions .btn.small { padding: 8px 12px; }

  /* Overview */
  .overview { padding: 18px 16px; margin: 16px 0; border-radius: 12px; }
  .overview h1 { font-size: 17px; }
  .overview .sub { font-size: 12px; }
  .metrics { grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 18px; }
  .metric { padding: 12px 13px; }
  .metric .value { font-size: 21px; }

  /* Site cards */
  .sites { gap: 12px; }
  .site-head { padding: 13px 14px; gap: 10px; }
  .site-head .name { font-size: 14.5px; }
  .site-timeline-wrap { padding: 2px 14px 14px; }
  .site-body { padding: 2px 14px 16px; }
  .site-summary { gap: 12px; }
  .summary-item.hide-sm { display: none; }

  /* Monitor rows: name on its own line, stats wrap below */
  .monitor-top { flex-wrap: wrap; gap: 6px 12px; margin-bottom: 8px; }
  .monitor-name { flex: 1 1 100%; }
  .monitor-name .model { font-size: 11.5px; word-break: break-all; }
  .monitor-top .spacer { display: none; }
  .monitor-stats { width: 100%; justify-content: flex-start; gap: 18px; }
  .monitor-stats .mstat.hide-sm { display: none; }
  .mstat { text-align: left; }

  .timeline { height: 30px; }
  .timeline.slim { height: 24px; }
  .footer { padding: 24px 0 32px; }

  /* Provider cards stack single-column on small screens */
  .provider-grid { grid-template-columns: 1fr; gap: 12px; }
  .pc-metrics { gap: 6px; }
  .pc-metric { padding: 8px 9px; }
  .pc-metric .v { font-size: 15px; }
}

/* Small phone */
@media (max-width: 380px) {
  .metrics { grid-template-columns: 1fr 1fr; gap: 8px; }
  .metric .value { font-size: 19px; }
  #granPicker button { font-size: 12px; }
}