:root {
  --bg: #0b0f1a;
  --card-bg: rgba(18, 24, 38, 0.95);
  --card-bg-light: rgba(30, 36, 54, 0.9);
  --accent: #7c3aed;
  --accent-hover: #8b5cf6;
  --accent-glow: 0 0 15px rgba(124, 58, 237, 0.5);
  --border: rgba(255,255,255,0.08);
  --text: #e7ebf4;
  --text-muted: #9aa4b2;
  --text-light: #f8fafc;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}
* { 
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: radial-gradient(ellipse at top, #1a1f35, #0b0f1a);
  color: var(--text);
  min-height: 100vh;
  margin: 0;
  padding: 24px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  line-height: 1.6;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  padding: 32px;
  width: 100%;
  max-width: 1200px;
  transition: all 0.3s ease;
}
.card-header {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
  background: linear-gradient(90deg, #a78bfa, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 12px;
}
.tagline {
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 8px;
}
@media (max-width: 1024px) {
  .grid { grid-template-columns: 1fr; }
}
.panel {
  background: var(--card-bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.panel-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-light);
}
.panel-subtitle {
  font-size: 14px;
  color: var(--text-muted);
}
textarea {
  width: 100%;
  height: 320px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  color: var(--text);
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  font-size: 14px;
  line-height: 1.5;
  resize: vertical;
  transition: all 0.2s ease;
}
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--accent-glow);
  background: rgba(255,255,255,0.07);
}
textarea#outputCode {
  background: rgba(0,0,0,0.2);
}
.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.options {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}
.option-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.option-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-light);
  cursor: pointer;
}
input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}
button {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  border: none;
  color: white;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}
button:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--accent-glow);
}
button:active {
  transform: translateY(0);
}
button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
button.ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(124, 58, 237, 0.1);
}
button.success {
  background: var(--success);
}
button.warning {
  background: var(--warning);
}
button.danger {
  background: var(--danger);
}
.divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}
.note {
  margin-top: 20px;
  padding: 16px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  border-left: 3px solid var(--warning);
}
.note strong {
  color: var(--warning);
}
.output-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.status {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.status.success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}
.status.warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}
.icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: rgba(124, 58, 237, 0.2);
  color: var(--accent);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  margin-left: 8px;
}