:root {
  --bg: #fafafa;
  --card: #ffffff;
  --border: #e5e7eb;
  --text: #18181b;
  --muted: #71717a;
  --up: #16a34a;
  --up-bg: #dcfce7;
  --down: #dc2626;
  --down-bg: #fee2e2;
  --pending: #d4d4d8;
}

* {
  box-sizing: border-box;
}

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

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 56px 20px 80px;
}

.banner {
  text-align: center;
  margin-bottom: 32px;
}

.banner-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
}

.banner-icon.up {
  background: var(--up-bg);
  color: var(--up);
}

.banner-icon.down {
  background: var(--down-bg);
  color: var(--down);
}

.banner h1 {
  font-size: 26px;
  font-weight: 700;
  margin: 0 0 6px;
}

.banner-subtitle {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.card-title {
  font-weight: 600;
  font-size: 15px;
}

.toolbar {
  display: flex;
  gap: 10px;
}

.search {
  min-width: 200px;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  outline: none;
}

.search:focus {
  border-color: #a1a1aa;
}

.period-selector {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  overflow: hidden;
  flex-shrink: 0;
}

.period-selector button {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  padding: 0 14px;
  cursor: pointer;
}

.period-selector button + button {
  border-left: 1px solid var(--border);
}

.period-selector button.active {
  background: var(--text);
  color: #fff;
}

.monitors {
  display: flex;
  flex-direction: column;
}

.client-group {
  display: flex;
  flex-direction: column;
}

.client-heading {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0;
  padding: 16px 22px 6px;
}

.monitor-row {
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
}

.client-group:last-child .monitor-row:last-child {
  border-bottom: none;
}

.monitor-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.monitor-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  font-size: 15px;
  min-width: 0;
}

.monitor-name .domain {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

.status-icon.up {
  background: var(--up-bg);
  color: var(--up);
}

.status-icon.down {
  background: var(--down-bg);
  color: var(--down);
}

.status-icon.pending {
  background: var(--pending);
  color: #fff;
}

.uptime-pct {
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.uptime-pct.up {
  color: var(--up);
}

.uptime-pct.down {
  color: var(--down);
}

.uptime-pct.pending {
  color: var(--muted);
}

.monitor-note {
  font-size: 12px;
  color: var(--muted);
  margin: -4px 0 10px;
}

.heartbeat {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 24px;
}

.bar {
  flex: 1;
  min-width: 3px;
  height: 100%;
  border-radius: 2px;
  background: var(--pending);
}

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

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

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

.empty {
  color: var(--muted);
  font-size: 14px;
  text-align: center;
  padding: 40px 0;
}