:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #6d7785;
  --border: #dde3ea;
  --primary: #2857d9;
  --good: #16803b;
  --warn: #b66b00;
  --bad: #c62828;
  --unknown: #657080;
}

* { box-sizing: border-box; }

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

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  height: 64px;
  background: #111827;
  color: white;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar a { color: white; }
.topbar nav { display: flex; gap: 16px; align-items: center; }
.brand { font-weight: 800; font-size: 20px; }

.container {
  max-width: 1500px;
  margin: 0 auto;
  padding: 28px;
}

footer {
  max-width: 1500px;
  margin: 24px auto;
  padding: 0 28px 28px;
  color: var(--muted);
  font-size: 13px;
}

h1 { margin: 0 0 24px; }
h2 { margin: 0 0 16px; font-size: 18px; }

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.metric {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
}
.metric span { color: var(--muted); display: block; font-size: 13px; margin-bottom: 6px; }
.metric strong { font-size: 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.card-header, .title-row, .actions {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.title-row { margin-bottom: 16px; }
.title-row h1 { margin-bottom: 4px; }
.actions { justify-content: flex-start; margin-bottom: 20px; flex-wrap: wrap; }
.actions form { margin: 0; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 13px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: white;
  color: var(--text);
  cursor: pointer;
  font: inherit;
}
.button:hover { text-decoration: none; filter: brightness(.98); }
.button.primary { background: var(--primary); border-color: var(--primary); color: white; }
.button.secondary { background: #eef1f5; }
.button.danger { background: #fff0f0; color: var(--bad); border-color: #efbcbc; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 900px; }
th, td { padding: 11px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
tr:last-child td { border-bottom: 0; }

.status {
  display: inline-block;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .04em;
}
.status.large { padding: 7px 13px; font-size: 13px; }
.status-online { background: #dff6e7; color: var(--good); }
.status-warning, .status-degraded { background: #fff2d8; color: var(--warn); }
.status-down { background: #ffe3e3; color: var(--bad); }
.status-unknown { background: #e8ebef; color: var(--unknown); }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.form-grid label > span { display: block; font-weight: 600; margin-bottom: 7px; }
.form-grid input[type="text"],
.form-grid input[type="url"],
.form-grid input[type="number"],
.form-grid input:not([type]) {
  width: 100%;
  border: 1px solid var(--border);
  padding: 10px 11px;
  border-radius: 8px;
  font: inherit;
}
.wide { grid-column: 1 / -1; }
.checks { display: flex; gap: 24px; flex-wrap: wrap; }
.checks label { font-weight: 500; }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.kv {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 10px 16px;
  margin: 0;
}
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

.dns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
}

.chart-container { height: 320px; }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.small { font-size: 12px; }
.subtle, .empty { color: var(--muted); }

@media (max-width: 850px) {
  .container { padding: 18px; }
  .form-grid, .grid-2 { grid-template-columns: 1fr; }
  .wide { grid-column: auto; }
  .topbar nav > a:first-child { display: none; }
}


.large-chart { height: 420px; }

.chart-legend {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
}

.chart-legend span {
  background: #f2f4f7;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 8px;
}

.status-timeline {
  display: flex;
  width: 100%;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #eef1f5;
}

.timeline-block {
  flex: 1 1 0;
  min-width: 2px;
  height: 100%;
}

.timeline-online { background: #2ca44f; }
.timeline-warning { background: #f0a92e; }
.timeline-degraded { background: #e98b22; }
.timeline-down { background: #d63c3c; }
.timeline-unknown { background: #9aa3af; }

.timeline-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}


.section-title {
  border-top: 1px solid var(--border);
  padding-top: 18px;
  margin-top: 4px;
}
.section-title h2 { margin-bottom: 4px; }
.notification-checks { align-items: center; }
.alert {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 18px;
}
.alert.success { background: #e7f7ed; border-color: #b9e1c6; color: #176d34; }
.alert.error { background: #fff0f0; border-color: #efc0c0; color: #a92828; }