:root {
  --bg-main: #0a0d14;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(28, 36, 56, 0.85);
  --bg-input: rgba(13, 18, 30, 0.85);
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.5);
  --border-active: #38bdf8;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --primary: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.25);
  --accent: #818cf8;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --blur-glass: blur(16px);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Ambient Neon Glows */
.glow-bg {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.22;
}

.glow-bg.top-left {
  top: -15%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, #38bdf8, #6366f1);
}

.glow-bg.bottom-right {
  bottom: -15%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, #818cf8, #06b6d4);
}

.app-layout {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px 28px 40px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(129, 140, 248, 0.25));
  border: 1px solid rgba(56, 189, 248, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-text h1 span {
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 400;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
}

.status-dot.ready {
  background: var(--success);
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.6);
}

.status-dot.pulse {
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
}

.icon-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-focus);
  transform: translateY(-1px);
}

/* Settings Drawer */
.settings-drawer {
  position: fixed;
  top: 0;
  right: -380px;
  width: 360px;
  height: 100vh;
  background: #0f1626;
  border-left: 1px solid var(--border-subtle);
  backdrop-filter: blur(20px);
  z-index: 100;
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.5);
  transition: right 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.settings-drawer.open {
  right: 0;
}

.drawer-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.drawer-header h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 4px;
}

.drawer-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.setting-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.setting-group select, .setting-group input[type="range"] {
  width: 100%;
}

.setting-group select {
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  outline: none;
  font-family: inherit;
  font-size: 0.9rem;
}

.label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.label-row span {
  font-family: var(--font-mono);
  color: var(--primary);
  font-weight: 600;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

/* Upload Section */
.upload-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.dropzone {
  border: 2px dashed rgba(56, 189, 248, 0.35);
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border-radius: var(--radius-xl);
  padding: 42px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background: rgba(28, 38, 62, 0.8);
  box-shadow: 0 0 35px var(--primary-glow);
  transform: translateY(-2px);
}

.upload-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: transform 0.3s ease;
}

.dropzone:hover .upload-icon {
  transform: scale(1.1) translateY(-2px);
}

.upload-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.browse-link {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.upload-hint {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.upload-hint code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: var(--accent);
}

/* Samples Bar */
.samples-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.samples-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.samples-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.sample-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: 9999px;
  font-family: inherit;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.sample-chip:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--primary);
  color: var(--text-main);
  transform: translateY(-1px);
}

/* Processing Banner */
.processing-banner {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.15), rgba(129, 140, 248, 0.15));
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
  box-shadow: 0 0 30px var(--primary-glow);
  animation: pulseBanner 2s infinite ease-in-out;
}

@keyframes pulseBanner {
  0%, 100% { border-color: rgba(56, 189, 248, 0.35); }
  50% { border-color: rgba(129, 140, 248, 0.6); }
}

.loader-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(56, 189, 248, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.processing-text h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.processing-text p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Results Dashboard Grid */
.results-dashboard {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: start;
}

@media (max-width: 1024px) {
  .results-dashboard {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tabs-container {
  display: flex;
  gap: 6px;
  background: rgba(0, 0, 0, 0.25);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: var(--primary);
  color: #050b14;
  box-shadow: 0 2px 10px var(--primary-glow);
}

.viewer-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-main);
  border-color: var(--border-focus);
}

/* Viewer Body */
.viewer-body {
  position: relative;
  min-height: 480px;
  max-height: 640px;
  background: #06090e;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 16px;
}

.image-wrapper {
  position: relative;
  display: inline-block;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: center center;
}

.ocr-image {
  max-width: 100%;
  max-height: 600px;
  display: block;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}

#bbox-overlay-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.viewer-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

#box-count-badge {
  color: var(--primary);
  font-weight: 600;
}

/* Metrics Row */
.metrics-row {
  display: flex;
  gap: 24px;
  width: 100%;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-val {
  font-size: 1.35rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--primary);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Scrollable Right Panel */
.scrollable-body {
  padding: 20px;
  max-height: 600px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.scrollable-body::-webkit-scrollbar {
  width: 6px;
}

.scrollable-body::-webkit-scrollbar-track {
  background: transparent;
}

.scrollable-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}

.section-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.block-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
}

.sub-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.block-actions {
  display: flex;
  gap: 8px;
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.secondary-btn:hover {
  background: rgba(56, 189, 248, 0.12);
  border-color: var(--primary);
  color: var(--text-main);
}

.full-text-display {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-main);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 180px;
  overflow-y: auto;
}

/* BBox List */
.boxes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.box-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.box-item:hover, .box-item.highlighted {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--primary);
  transform: translateX(3px);
}

.box-left {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.box-index {
  background: rgba(56, 189, 248, 0.2);
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.box-text {
  font-size: 0.9rem;
  color: var(--text-main);
  word-break: break-word;
  line-height: 1.4;
}

.box-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  min-width: 75px;
}

.confidence-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success);
}

.confidence-bar {
  width: 60px;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.confidence-fill {
  height: 100%;
  background: linear-gradient(90deg, #34d399, #38bdf8);
  border-radius: 2px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: #1e293b;
  border: 1px solid var(--border-focus);
  color: var(--text-main);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 999;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}