* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
}

.wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  width: 100%;
  max-width: 920px;
  background: #111827;
  border: 1px solid #1f2937;
  border-radius: 16px;
  padding: 20px;
}

h1 {
  margin: 0 0 8px;
  font-size: 32px;
}

.sub {
  margin: 0 0 18px;
  color: #9ca3af;
}

.runtime-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.runtime-badge {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #172554;
  border: 1px solid #1d4ed8;
  color: #bfdbfe;
  font-size: 12px;
  font-weight: 700;
}

.runtime-note {
  color: #6b7280;
  font-size: 13px;
}

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.tool-btn {
  height: 36px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid #374151;
  background: #0f172a;
  color: #e5e7eb;
  cursor: pointer;
  font-weight: 700;
}

.tool-btn:hover {
  background: #162033;
}

.tool-btn-danger {
  border-color: #7f1d1d;
  color: #fecaca;
  background: #210f14;
}

.tool-btn-danger:hover {
  background: #35131c;
}

.chat-box {
  height: 320px;
  overflow-y: auto;
  border: 1px solid #1f2937;
  border-radius: 12px;
  padding: 16px;
  background: #0b1220;
}

.msg {
  max-width: 80%;
  padding: 10px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.msg.user {
  margin-left: auto;
  background: #2563eb;
  color: #fff;
}

.msg.assistant {
  margin-right: auto;
  background: #1f2937;
  color: #e5e7eb;
}

.runtime-panel {
  margin-top: 16px;
  border: 1px solid #1f2937;
  border-radius: 12px;
  background: #0b1220;
  padding: 16px;
}

.hidden {
  display: none;
}

.runtime-title {
  font-size: 14px;
  font-weight: 700;
  color: #f9fafb;
  margin-bottom: 14px;
}

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

.runtime-item {
  border: 1px solid #1f2937;
  border-radius: 10px;
  background: #0f172a;
  padding: 12px;
}

.runtime-label {
  font-size: 12px;
  color: #9ca3af;
  margin-bottom: 6px;
}

.runtime-value {
  font-size: 14px;
  color: #f3f4f6;
  line-height: 1.45;
  word-break: break-word;
}

.runtime-block {
  margin-top: 12px;
  border: 1px solid #1f2937;
  border-radius: 10px;
  background: #0f172a;
  padding: 12px;
}

.runtime-pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  color: #d1d5db;
  font-size: 13px;
  line-height: 1.5;
  font-family: Consolas, Monaco, monospace;
}

.chat-form {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.chat-form input {
  flex: 1;
  height: 44px;
  border-radius: 10px;
  border: 1px solid #374151;
  background: #0b1220;
  color: #fff;
  padding: 0 14px;
  outline: none;
}

.chat-form button {
  height: 44px;
  padding: 0 18px;
  border: 0;
  border-radius: 10px;
  background: #10b981;
  color: #06281d;
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 720px) {
  .card {
    max-width: 100%;
    padding: 16px;
  }

  .runtime-head {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .chat-box {
    height: 280px;
  }
}