:root {
  /* Color Palette - Industrial / High-Tech Cyberpunk Minimalist */
  --bg-dark: #0a0a0c;
  --bg-card: #141417;
  --bg-nav: #1c1c21;
  --accent-primary: #00f2ff; /* Cyber Blue */
  --accent-secondary: #7000ff; /* Electric Purple */
  --text-main: #e0e0e0;
  --text-muted: #888891;
  --border-color: #2d2d33;
  --success: #00ff88;
  --warning: #ffcc00;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 64px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: 'JetBrains Mono', 'Segoe UI Mono', 'Roboto Mono', monospace;
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

header {
  height: 64px;
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  justify-content: space-between;
  z-index: 100;
}

.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -1px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo span {
  color: var(--accent-primary);
}

nav {
  display: flex;
  gap: var(--space-lg);
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
  text-transform: uppercase;
  letter-spacing: 1px;
}

nav a.active, nav a:hover {
  color: var(--accent-primary);
}

main {
  flex: 1;
  display: grid;
  grid-template-columns: 320px 1fr;
  overflow: hidden;
}

/* Sidebar Controls */
.sidebar {
  background: var(--bg-card);
  border-right: 1px solid var(--border-color);
  padding: var(--space-lg);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.control-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--space-xs);
}

/* Workspace Layout */
.workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-color);
  height: 100%;
}

.panel {
  background: var(--bg-dark);
  padding: var(--space-lg);
  overflow-y: auto;
  position: relative;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.panel-title {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Document Viewer */
.doc-viewer {
  background: #2a2a2e;
  border-radius: var(--radius-sm);
  aspect-ratio: 1 / 1.414; /* A4 Ratio */
  width: 100%;
  position: relative;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  margin: 0 auto;
  overflow: hidden;
}

.doc-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.highlight-box {
  position: absolute;
  border: 2px solid var(--accent-primary);
  background: rgba(0, 242, 255, 0.1);
}

/* Form Elements */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
}

.upload-zone:hover {
  border-color: var(--accent-primary);
  background: rgba(0, 242, 255, 0.02);
}

.btn {
  background: var(--accent-primary);
  color: #000;
  border: none;
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  font-size: 0.85rem;
  transition: transform 0.1s, opacity 0.2s;
}

.btn:hover {
  opacity: 0.9;
}

.btn:active {
  transform: scale(0.98);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent-primary);
  color: var(--accent-primary);
}

select, input {
  background: var(--bg-nav);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  width: 100%;
  font-family: inherit;
}

/* Extraction Results */
.extraction-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.extraction-item {
  background: var(--bg-card);
  padding: var(--space-md);
  border-left: 3px solid var(--accent-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.item-key {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
}

.item-value {
  font-size: 1rem;
  font-weight: 500;
  word-break: break-all;
}

.item-warning {
  font-size: 0.6rem; 
  color: var(--warning); 
  display: block; 
  margin-top: 4px;
}

.badge-verified {
  background: var(--success); 
  color: #000; 
  font-size: 0.6rem; 
  padding: 2px 6px; 
  border-radius: 2px; 
  font-weight: 800;
}

/* Pipeline Status */
.pipeline-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.step {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm);
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
}

.step-indicator {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
}

.step.done .step-indicator {
  background: var(--success);
  border-color: var(--success);
  color: #000;
}

.step.active .step-indicator {
  border-color: var(--accent-primary);
  animation: pulse 1.5s infinite;
}

.trace-log {
  flex: 1; 
  font-family: 'JetBrains Mono', monospace; 
  overflow-y: scroll;
}

.log-info { color: var(--success); }
.log-debug { color: var(--accent-primary); }
.log-warn { color: var(--warning); }
.log-run { color: var(--accent-primary); }

.meta-footer {
  margin-top: var(--space-lg); 
  background: var(--bg-card); 
  padding: var(--space-md); 
  border-radius: var(--radius-sm);
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  font-size: 0.75rem;
}

.meta-value { color: var(--accent-primary); }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 242, 255, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(0, 242, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 242, 255, 0); }
}

/* OCR Output */
.ocr-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: pre-wrap;
  background: #000;
  padding: var(--space-lg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.placeholder-image {
  background: linear-gradient(45deg, #1a1a1e 25%, #222226 50%, #1a1a1e 75%);
  background-size: 200% 200%;
  animation: shimmer 2s infinite linear;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}