:root {
  color: #1f2933;
  background: #eef3f7;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

button {
  border: 1px solid #bac7d5;
  border-radius: 8px;
  background: #ffffff;
  color: #172331;
  cursor: pointer;
  font: inherit;
  min-height: 44px;
  padding: 0 16px;
}

button:hover {
  border-color: #2f80ed;
}

.shell {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 440px);
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px;
}

.panel {
  background: #ffffff;
  border: 1px solid #d8e1ea;
  border-radius: 8px;
  box-shadow: 0 14px 35px rgba(31, 41, 55, 0.08);
}

.hero-panel {
  padding: 28px;
}

.eyebrow {
  color: #2f80ed;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 10px;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
}

h1 {
  font-size: 42px;
  line-height: 1.05;
}

h2 {
  font-size: 16px;
}

.intro {
  color: #516171;
  font-size: 16px;
  line-height: 1.6;
  max-width: 680px;
}

.event-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 28px;
}

.event-grid button:first-child {
  background: #172331;
  border-color: #172331;
  color: #ffffff;
}

.toolbar {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.debug-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 20px;
}

.section-title {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

#mode-pill,
#backend-status,
#event-count {
  background: #edf5ff;
  border-radius: 999px;
  color: #1b5e9e;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 10px;
}

.kv-grid {
  display: grid;
  gap: 10px;
  margin: 0;
}

.kv-grid div {
  border-bottom: 1px solid #edf1f5;
  padding-bottom: 8px;
}

dt {
  color: #6b7a8a;
  font-size: 12px;
  margin-bottom: 3px;
}

dd {
  font-size: 13px;
  margin: 0;
  overflow-wrap: anywhere;
}

pre {
  background: #101820;
  border-radius: 8px;
  color: #d6f4ff;
  font-size: 12px;
  line-height: 1.5;
  margin: 0;
  max-height: 280px;
  overflow: auto;
  padding: 14px;
}

.event-list {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 0;
  max-height: 260px;
  overflow: auto;
  padding: 0;
}

.event-list li {
  border: 1px solid #edf1f5;
  border-radius: 8px;
  display: grid;
  gap: 4px;
  padding: 10px;
}

.event-list span,
.event-list small {
  color: #647484;
  overflow-wrap: anywhere;
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  h1 {
    font-size: 34px;
  }

  .event-grid {
    grid-template-columns: 1fr;
  }
}