:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #1e293b;
  --muted: #64748b;
  --primary: #5850ec;
  --primary-dark: #4338ca;
  --green: #16a34a;
  --red: #dc2626;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }

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

header.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
}
.brand .dot { color: var(--text); font-weight: 700; font-size: 14px; }

.user { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
.user .avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, #f59e0b, #16a34a, #5850ec);
}
.user form { margin: 0; }
.user button.link {
  background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13px; padding: 0;
}

h1 { font-size: 30px; margin: 12px 0 20px; }

.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }

.search, select, input[type=text], input[type=password] {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  background: var(--card);
  color: var(--text);
}
.search { min-width: 260px; }

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: var(--card); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--red); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.site-card { display: block; }
.site-card .row1 { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.site-card .name { font-size: 17px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.site-card .favicon { width: 18px; height: 18px; border-radius: 3px; background: #cbd5e1; flex: none; object-fit: cover; }
.site-card .spark { display: block; width: 100%; height: 40px; margin-bottom: 10px; }
.site-card .stats { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); }
.site-card .stats b { color: var(--text); }
.up { color: var(--green); }
.down { color: var(--red); }
.flat { color: var(--muted); }

/* dashboard */
.dash-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin: 18px 0; }
.dash-title { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; }
.dash-title .switcher { position: relative; }
.dash-title select.site-select { font-weight: 700; font-size: 16px; border: none; background: none; cursor: pointer; }
.live { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); font-weight: 600; }
.live .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }

.controls { display: flex; gap: 10px; align-items: center; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 0 0 14px; }
.filter-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: #eef2ff; color: var(--primary-dark);
  border-radius: 999px; padding: 5px 10px; font-size: 12px; font-weight: 600;
}
.filter-chip a { opacity: .6; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: none;
  padding: 18px 0;
}
@media (max-width: 900px) { .stat-row { grid-template-columns: repeat(3, 1fr); row-gap: 16px; } }
.stat { padding: 0 20px; border-right: 1px solid var(--border); }
.stat:last-child { border-right: none; }
.stat .label { font-size: 11px; letter-spacing: .04em; color: var(--muted); font-weight: 700; text-transform: uppercase; margin-bottom: 6px; }
.stat.active .label { color: var(--primary); text-decoration: underline; }
.stat[onclick] { cursor: pointer; }
.stat .value { font-size: 26px; font-weight: 800; display: flex; align-items: baseline; gap: 8px; }
.stat .change { font-size: 13px; font-weight: 600; }

.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.chart-card canvas { max-height: 300px; }

.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 900px) { .panel-grid { grid-template-columns: 1fr; } }

.panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.panel-head h3 { margin: 0; font-size: 16px; }
.tabs { display: flex; gap: 14px; font-size: 13px; color: var(--muted); font-weight: 600; }
.tabs a.active { color: var(--primary); text-decoration: underline; }

table.bars { width: 100%; border-collapse: collapse; font-size: 14px; }
table.bars tr td { padding: 7px 0; position: relative; }
table.bars tr td.label a { position: relative; z-index: 1; }
table.bars tr td.bar-bg {
  position: absolute; left: 0; top: 0; bottom: 0;
  background: #f1f0fe; z-index: 0; border-radius: 4px;
}
table.bars td.val { text-align: right; font-weight: 600; white-space: nowrap; }
table.bars td.flag { padding-right: 8px; }
.empty { color: var(--muted); font-size: 14px; padding: 20px 0; text-align: center; }

/* login / setup */
.center-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.auth-card { width: 360px; padding: 32px; }
.auth-card h1 { font-size: 22px; margin-top: 0; }
.auth-card label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.auth-card input { width: 100%; }
.auth-card .btn { width: 100%; margin-top: 20px; }
.error { color: var(--red); font-size: 13px; margin-top: 10px; }
.hint { color: var(--muted); font-size: 13px; margin-top: 8px; }

/* settings */
.settings-layout { display: grid; grid-template-columns: 220px 1fr; gap: 24px; align-items: start; }
@media (max-width: 800px) { .settings-layout { grid-template-columns: 1fr; } }
.settings-nav { display: flex; flex-direction: column; gap: 2px; }
.settings-nav a { padding: 9px 12px; border-radius: 8px; font-size: 14px; font-weight: 600; color: var(--muted); }
.settings-nav a.active { background: #eef2ff; color: var(--primary-dark); }
.settings-section { margin-bottom: 20px; }
.settings-section h2 { font-size: 17px; margin: 0 0 4px; }
.settings-section p.desc { color: var(--muted); font-size: 13px; margin: 0 0 16px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
pre.snippet {
  background: #0f172a; color: #e2e8f0; padding: 14px; border-radius: 8px;
  font-size: 12.5px; overflow-x: auto;
}
.back-link { font-size: 13px; font-weight: 600; color: var(--primary); }

.install-banner {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
  margin: 18px 0 24px;
}
.install-banner h2 { margin: 0 0 4px; font-size: 18px; }
.install-banner .desc { margin-bottom: 14px; }
.install-banner pre.snippet { margin-bottom: 16px; }