* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, sans-serif;
  background: #0f1720;
  color: #e8eef5;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-bottom: 1px solid #243447;
  background: #152231;
}

.header h1 {
  margin: 0 0 4px;
  font-size: 24px;
}

.header p {
  margin: 0;
  color: #9db0c3;
}

.health {
  padding: 8px 12px;
  border-radius: 8px;
  background: #1f2f40;
  font-size: 13px;
}

.health.ok {
  background: #173528;
  color: #9be7b5;
}

.health.error {
  background: #3a1d24;
  color: #ffb4c0;
}

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  padding: 16px;
  min-height: calc(100vh - 96px);
}

.panel {
  background: #152231;
  border: 1px solid #243447;
  border-radius: 12px;
  padding: 16px;
}

.panel h2 {
  margin: 0 0 16px;
  font-size: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 14px;
}

.field input,
.field select,
button {
  font: inherit;
}

.field input,
.field select {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #31465d;
  background: #0f1720;
  color: inherit;
}

button {
  width: 100%;
  padding: 12px 14px;
  border: 0;
  border-radius: 8px;
  background: #3b82f6;
  color: white;
  cursor: pointer;
  font-weight: 600;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.status {
  margin: 14px 0 0;
  color: #9db0c3;
  font-size: 14px;
  line-height: 1.4;
  white-space: pre-wrap;
}

.metrics {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #243447;
  display: grid;
  gap: 8px;
  font-size: 14px;
}

.hidden {
  display: none;
}

.viewer {
  display: flex;
  flex-direction: column;
  min-height: 70vh;
}

#viewport {
  flex: 1;
  min-height: 520px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #243447;
  background: #0b1118;
}

.hint {
  margin: 12px 0 0;
  color: #7f93a8;
  font-size: 13px;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }
}