:root {
  color-scheme: light;
  --bg: #f6f7f2;
  --surface: #ffffff;
  --ink: #18201b;
  --muted: #66706a;
  --line: #dfe5dc;
  --green: #16833a;
  --red: #c73232;
  --yellow: #b98505;
  --shadow: 0 12px 30px rgba(24, 32, 27, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.topbar,
main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 34px;
  line-height: 1.05;
}

h2 {
  margin: 28px 0 12px;
  font-size: 18px;
}

button {
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 0 18px;
  background: var(--ink);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

button:focus-visible {
  outline: 3px solid #90c2ff;
  outline-offset: 3px;
}

button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.summary div,
.target-card,
.alert {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.summary div {
  padding: 16px;
}

.summary span {
  display: block;
  font-size: 28px;
  font-weight: 900;
}

.summary small {
  color: var(--muted);
  font-weight: 700;
}

.target-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.target-card {
  min-width: 0;
  padding: 18px;
}

.target-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.target-url,
.alert-message {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.target-url {
  font-weight: 900;
  line-height: 1.25;
}

.badge {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 5px 9px;
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.badge.up {
  background: var(--green);
}

.badge.down {
  background: var(--red);
}

.badge.unknown {
  background: var(--muted);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.metric {
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.metric small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.metric strong {
  display: block;
  margin-top: 3px;
  overflow-wrap: anywhere;
}

.response.fast {
  color: var(--green);
}

.response.slow {
  color: var(--yellow);
}

.response.down {
  color: var(--red);
}

.history {
  display: grid;
  grid-template-columns: repeat(30, minmax(3px, 1fr));
  gap: 3px;
  height: 36px;
  margin-top: 16px;
}

.bar {
  min-width: 3px;
  border-radius: 3px;
  background: var(--line);
}

.bar.up {
  background: var(--green);
}

.bar.down {
  background: var(--red);
}

.bar.slow {
  background: var(--yellow);
}

.alerts {
  display: grid;
  gap: 10px;
  padding-bottom: 28px;
}

.alert {
  display: grid;
  grid-template-columns: 10px minmax(0, 1fr);
  gap: 12px;
  padding: 14px;
}

.alert::before {
  content: "";
  width: 10px;
  border-radius: 99px;
  background: var(--muted);
}

.alert.down::before {
  background: var(--red);
}

.alert.up::before {
  background: var(--green);
}

.alert time {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.empty {
  color: var(--muted);
  padding: 12px 0 28px;
}

@media (max-width: 720px) {
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .summary,
  .target-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 30px;
  }
}