* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: #0f172a;
  color: #e2e8f0;
  overflow: hidden;
  height: 100vh;
}

.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  background-color: #0f172a;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background-color: #020617;
  border-bottom: 1px solid #1e293b;
  flex-shrink: 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-terminal {
  width: 24px;
  height: 24px;
  color: #34d399;
}

.title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: #34d399;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Example navigation */
.example-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background-color: #020617;
  border-bottom: 1px solid #1e293b;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.example-link {
  color: #94a3b8;
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  transition: all 0.2s;
  cursor: pointer;
}

.example-link:hover {
  color: #34d399;
  background-color: rgba(52, 211, 153, 0.1);
}

.example-select {
  background-color: #1e293b;
  color: #94a3b8;
  border: 1px solid #334155;
  border-radius: 0.375rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
  outline: none;
}

.example-select:hover {
  color: #34d399;
  border-color: #34d399;
}

.example-select:focus {
  border-color: #34d399;
}

/* Trace toggle */
.trace-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: #94a3b8;
  cursor: pointer;
  user-select: none;
}

.trace-toggle input[type="checkbox"] {
  accent-color: #34d399;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background-color: #059669;
  color: white;
  font-weight: 700;
  box-shadow: 0 10px 15px -3px rgba(5, 150, 105, 0.2);
}

.btn-primary:hover {
  background-color: #10b981;
}

.btn-primary:active {
  transform: scale(0.95);
}

.btn-icon {
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  transition: color 0.2s;
}

.btn-icon:hover {
  color: #f87171;
}

.icon {
  width: 16px;
  height: 16px;
}

.icon-small {
  width: 12px;
  height: 12px;
}

/* Main Content — 3 panes */
.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

.pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid #1e293b;
}

.pane:last-child {
  border-right: none;
}

.pane-json {
  width: 30%;
}

.pane-rules {
  width: 35%;
}

.pane-output {
  width: 35%;
  background-color: #020617;
}

.pane-header {
  background-color: rgba(15, 23, 42, 0.5);
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-family: 'Courier New', monospace;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid #1e293b;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.editor {
  flex: 1;
  width: 100%;
  background-color: #0f172a;
  padding: 1rem;
  font-family: 'Courier New', monospace;
  font-size: 0.8125rem;
  line-height: 1.5;
  resize: none;
  border: none;
  outline: none;
  color: #cbd5e1;
  tab-size: 2;
}

.editor::selection {
  background-color: rgba(52, 211, 153, 0.3);
}

/* Console */
.console-content {
  flex: 1;
  padding: 1rem;
  font-family: 'Courier New', monospace;
  font-size: 0.8125rem;
  overflow-y: auto;
  font-weight: 500;
}

.console-placeholder {
  color: #475569;
  font-style: italic;
}

.log-line {
  margin-bottom: 0.125rem;
  color: #d1fae5;
  white-space: pre-wrap;
}

.log-line-query {
  color: #34d399;
  font-weight: 700;
  margin-top: 0.5rem;
}

.log-line-result {
  color: #a5f3fc;
}

.log-line-summary {
  color: #64748b;
  font-style: italic;
}

.log-line-error {
  color: #fca5a5;
}

.log-line-empty {
  height: 0.5rem;
}

/* Trace Panel */
.trace-panel {
  border-top: 1px solid #1e293b;
  background-color: #0f172a;
  flex-shrink: 0;
  display: none;
}

.trace-panel.visible {
  display: flex;
  flex-direction: column;
}

.trace-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-family: 'Courier New', monospace;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid #1e293b;
}

.trace-header:hover {
  color: #34d399;
}

.trace-arrow {
  font-size: 0.6rem;
  transition: transform 0.2s;
}

.trace-panel.collapsed .trace-arrow {
  transform: rotate(-90deg);
}

.trace-panel.collapsed .trace-content {
  display: none;
}

.trace-content {
  max-height: 200px;
  overflow-y: auto;
  padding: 0.75rem 1rem;
}

.trace-content pre {
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  line-height: 1.4;
  color: #94a3b8;
  white-space: pre;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #1e293b;
}

::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

/* Responsive */
@media (max-width: 900px) {
  .header {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
  }

  .main-content {
    flex-direction: column;
  }

  .pane {
    width: 100% !important;
    border-right: none;
    border-bottom: 1px solid #1e293b;
  }

  .pane:last-child {
    border-bottom: none;
  }

  .title {
    font-size: 1rem;
  }
}