/* QSM-WASM Modern Styles */

:root {
  /* Color palette - professional medical/scientific theme */
  --color-bg: #0f1419;
  --color-surface: #1a2332;
  --color-surface-elevated: #232f42;
  --color-border: #2d3f5a;
  --color-border-light: #3d5275;

  --color-text: #e8edf4;
  --color-text-muted: #8b99ad;
  --color-text-dim: #5c6b7f;

  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-glow: rgba(59, 130, 246, 0.25);

  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.1);

  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.1);

  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.1);

  --color-accent: #8b5cf6;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px var(--color-primary-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

/* Layout */
.app-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  max-height: 100vh;
  gap: 0;
  overflow: hidden;
}

.app-header {
  grid-column: 1 / -1;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.opacity-control {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-left: var(--space-sm);
}

.opacity-control input[type="range"] {
  width: 60px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 2px;
  cursor: pointer;
}

.opacity-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
}

.opacity-control input[type="range"]::-moz-range-thumb {
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  border: none;
  cursor: pointer;
}

/* Disabled range input styles */
input[type="range"]:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

input[type="range"]:disabled::-webkit-slider-thumb {
  background: var(--color-text-muted);
  cursor: not-allowed;
}

input[type="range"]:disabled::-moz-range-thumb {
  background: var(--color-text-muted);
  cursor: not-allowed;
}

#overlayOpacityValue {
  min-width: 28px;
  text-align: right;
}

.app-sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Scrollable sections area */
.app-sidebar > section {
  flex-shrink: 0;
}

.app-sidebar {
  overflow-y: auto;
}

/* Fixed status bar at bottom of sidebar */
.sidebar-status {
  flex-shrink: 0;
  margin-top: auto;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface-elevated);
  border-top: 1px solid var(--color-border);
}

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

.status-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.status-value {
  font-size: 0.7rem;
  color: var(--color-text);
  font-weight: 500;
}

.status-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.btn-status-cancel {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  opacity: 0;
  pointer-events: none;
}

.btn-status-cancel:not(:disabled) {
  opacity: 1;
  pointer-events: auto;
  border-color: var(--color-error);
  color: var(--color-error);
}

.btn-status-cancel:not(:disabled):hover {
  background: var(--color-error);
  color: white;
}

.app-main {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  overflow: hidden;
}

.app-footer {
  grid-column: 1 / -1;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xs) var(--space-lg);
  font-size: 0.65rem;
  color: var(--color-text-dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Header */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon img {
  display: block;
}

.logo h1 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--color-text-muted);
  font-weight: 400;
  font-size: 0.85rem;
  margin-left: var(--space-xs);
}

.logo .version {
  font-size: 0.7rem;
  opacity: 0.6;
  margin-left: var(--space-xs);
}

/* Sidebar Sections */
.sidebar-section {
  border-bottom: 1px solid var(--color-border);
}

.sidebar-section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: var(--space-md);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.section-title:hover {
  background: var(--color-surface-elevated);
  color: var(--color-text);
}

.section-title svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* Collapse chevron indicator */
.section-title::after {
  content: '';
  margin-left: auto;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform var(--transition-fast);
}

.sidebar-section.collapsed .section-title::after {
  transform: rotate(-90deg);
}

/* Section content wrapper */
.section-content {
  padding: 0 var(--space-md) var(--space-md);
  overflow: hidden;
  transition: max-height 0.25s ease-out, padding 0.25s ease-out, opacity 0.2s ease-out;
  max-height: 1000px;
  opacity: 1;
}

.sidebar-section.collapsed .section-content {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
}

/* Subsection collapsible (for nested content like "Refine Mask") */
.subsection-title {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-xs) 0;
  margin: var(--space-sm) 0 var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  cursor: pointer;
  user-select: none;
}

.subsection-title:hover {
  color: var(--color-text);
}

.subsection-title::before {
  content: '';
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  transition: transform var(--transition-fast);
}

.subsection.collapsed .subsection-title::before {
  transform: rotate(-90deg);
}

.subsection-content {
  overflow: hidden;
  transition: max-height 0.2s ease-out, opacity 0.15s ease-out;
  max-height: 500px;
  opacity: 1;
}

.subsection.collapsed .subsection-content {
  max-height: 0;
  opacity: 0;
}

/* Input Mode Tabs */
.input-mode-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-sm);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 2px;
  border: 1px solid var(--color-border);
}

.input-mode-tab {
  flex: 1;
  padding: 5px 4px;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: calc(var(--radius-sm) - 2px);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.input-mode-tab:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.input-mode-tab.active {
  color: var(--color-text);
  background: var(--color-primary);
  font-weight: 600;
}

/* Input mode content visibility */
.input-mode-content {
  display: none;
}

.input-mode-content.active {
  display: block;
}

/* Optional label styling */
.optional-label {
  font-weight: 400;
  font-size: 0.7rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* File Upload */
.file-upload-group {
  margin-bottom: var(--space-sm);
}

.file-upload-group:last-child {
  margin-bottom: 0;
}

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

.file-upload-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text);
}

.file-upload-label .count {
  color: var(--color-text-muted);
  font-weight: 400;
}

.btn-preview {
  opacity: 0.5;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.btn-preview:not(:disabled) {
  opacity: 1;
}

.btn-preview:not(:disabled):hover {
  color: var(--color-primary);
}

.file-upload-zone {
  position: relative;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: transparent;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.file-upload-zone:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-glow);
}

.file-upload-zone.dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-glow);
  border-style: solid;
}

.file-upload-zone.has-files {
  border-color: var(--color-success);
  border-style: solid;
  background: var(--color-success-bg);
}

.file-upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.file-upload-zone:hover .upload-icon {
  color: var(--color-primary);
}

.upload-text {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.upload-text strong {
  color: var(--color-primary);
}

/* File List */
.file-list {
  margin-top: var(--space-xs);
  max-height: 60px;
  overflow-y: auto;
}

/* Compact upload for Parameters section */
.upload-group.compact .file-upload-zone {
  padding: var(--space-xs) var(--space-sm);
}

.upload-group.compact .upload-icon {
  width: 14px;
  height: 14px;
}

.upload-group.compact .file-list {
  max-height: 40px;
}

.file-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface-elevated);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-xs);
  font-size: 0.75rem;
}

.file-item:last-child {
  margin-bottom: 0;
}

.file-name {
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.file-remove {
  background: none;
  border: none;
  color: var(--color-text-dim);
  cursor: pointer;
  padding: 2px;
  display: flex;
  transition: color var(--transition-fast);
}

.file-remove:hover {
  color: var(--color-error);
}

.file-remove svg {
  width: 14px;
  height: 14px;
}

/* DICOM Results */
.dicom-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.dicom-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: dicom-spin 0.8s linear infinite;
}

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

.dicom-results {
  margin-top: var(--space-sm);
}

.dicom-result-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) 0;
}

.dicom-result-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text);
  flex: 1;
}

.dicom-result-count {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.dicom-result-count.not-found {
  color: var(--color-text-dim);
  font-style: italic;
}

.dicom-result-meta {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Parameters */
.param-group {
  margin-bottom: var(--space-sm);
}

.param-group:last-child {
  margin-bottom: 0;
}

/* Sidebar pipeline dropdowns */
#sidebarPipelineDropdowns {
  margin-bottom: var(--space-sm);
}

.param-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 2px;
}

.threshold-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: 2px;
}

.threshold-header .param-label {
  margin-bottom: 0;
}

.threshold-value {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.param-help {
  display: none;
}

.unit-inline {
  font-weight: 400;
  color: var(--color-text-muted);
  font-size: 0.7rem;
}

/* Tagify dark theme overrides - use high specificity */
#echoTimesTagify {
  display: none;
}

.param-group .tagify,
.tagify {
  --tags-border-color: #2d3f5a !important;
  --tags-focus-border-color: #3b82f6 !important;
  --tagify-dd-bg-color: #232f42 !important;
  background: #232f42 !important;
  border: 1px solid #2d3f5a !important;
  border-radius: 6px !important;
  min-height: 26px !important;
  padding: 2px 4px !important;
  width: 100% !important;
  min-width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
  display: flex !important;
}

.param-group .tagify:focus-within,
.tagify:focus-within {
  border-color: #3b82f6 !important;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15) !important;
}

.param-group .tagify__tag,
.tagify .tagify__tag {
  margin: 2px !important;
  border-radius: 3px !important;
  background: #1e3a5f !important;
  box-shadow: none !important;
}

.param-group .tagify__tag > div,
.tagify .tagify__tag > div {
  font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace !important;
  font-size: 0.65rem !important;
  padding: 0.15em 0.4em !important;
  color: #e2e8f0 !important;
}

.param-group .tagify__tag > div::before,
.tagify .tagify__tag > div::before {
  box-shadow: none !important;
  background: transparent !important;
}

.param-group .tagify__tag:hover > div::before,
.tagify .tagify__tag:hover > div::before {
  background: rgba(255,255,255,0.05) !important;
}

.param-group .tagify__tag__removeBtn,
.tagify .tagify__tag__removeBtn {
  width: 12px !important;
  height: 12px !important;
  margin-left: 2px !important;
  color: rgba(255,255,255,0.5) !important;
  background: none !important;
}

.param-group .tagify__tag__removeBtn:hover,
.tagify .tagify__tag__removeBtn:hover {
  background: rgba(255,255,255,0.15) !important;
  color: #fff !important;
}

.param-group .tagify__input,
.tagify .tagify__input {
  font-size: 0.7rem !important;
  margin: 2px !important;
  padding: 2px 4px !important;
  color: #e2e8f0 !important;
}

.param-group .tagify__input::before,
.tagify .tagify__input::before {
  font-size: 0.65rem !important;
  color: #8b99ad !important;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b99ad' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-glow);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-danger {
  background: #dc2626;
  color: white;
  padding: var(--space-sm) var(--space-md);
}

.btn-danger:hover:not(:disabled) {
  background: #b91c1c;
}

.btn-danger:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.run-button-group {
  display: flex;
  gap: var(--space-sm);
}

.run-button-group .btn-primary {
  flex: 1;
}

.run-button-group .btn-danger {
  flex: 0 0 auto;
}

/* Section-disabled is now inert — warnings are shown via JS instead of greying out */

/* Mask divider ("or generate from magnitude") */
.mask-divider {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  margin: var(--space-sm) 0;
  position: relative;
}

.mask-divider::before,
.mask-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: calc(50% - 60px);
  height: 1px;
  background: var(--color-border);
}

.mask-divider::before { left: 0; }
.mask-divider::after { right: 0; }

/* Mask preview buttons */
.mask-preview-buttons {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.mask-preview-buttons .btn {
  flex: 1;
}

/* Mask operations (morphology + drawing) */
.mask-operations {
  margin-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-sm);
}

.mask-op-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xs);
}

/* Drawing controls */
.drawing-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.brush-mode-buttons {
  display: flex;
  gap: var(--space-xs);
}

.brush-mode-buttons .btn {
  flex: 1;
}

.brush-mode-buttons .btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.drawing-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xs);
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-border);
  border-color: var(--color-border-light);
}

.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  padding: 2px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
}

.btn-icon:hover:not(:disabled) {
  color: var(--color-primary);
  background: var(--color-surface-elevated);
}

.btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn svg {
  width: 16px;
  height: 16px;
}

/* Progress */
.progress-container {
  background: var(--color-surface-elevated);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  margin-bottom: var(--space-sm);
}

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

.progress-title {
  font-size: 0.75rem;
  font-weight: 500;
}

.progress-value {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
}

.progress-bar {
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transition: width var(--transition-normal);
}

/* Main Content */
.viewer-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.viewer-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.view-tabs {
  display: flex;
  gap: 2px;
}

.view-tab {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.view-tab:hover {
  color: var(--color-text);
  background: var(--color-surface-elevated);
}

.view-tab.active {
  color: var(--color-primary);
  background: var(--color-primary-glow);
}

.view-tab:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Echo Navigation */
.echo-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0 var(--space-sm);
  border-left: 1px solid var(--color-border);
  margin-left: var(--space-sm);
}

.echo-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  min-width: 70px;
  text-align: center;
}

.btn-icon {
  padding: var(--space-xs);
  min-width: auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.viewer-actions {
  display: flex;
  gap: var(--space-sm);
  margin-left: 0;
  margin-right: auto;
}

.viewer-canvas-wrapper {
  flex: 1;
  position: relative;
  background: #000;
  min-height: 0;
}

.viewer-canvas-wrapper canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
}

.viewer-info {
  padding: var(--space-xs) var(--space-md);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  font-size: 0.7rem;
  font-family: 'SF Mono', 'Consolas', monospace;
  color: var(--color-text-muted);
}

/* Console */
.console-container {
  height: 120px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.console-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-md);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.console-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.console-clear {
  font-size: 0.7rem;
  color: var(--color-text-dim);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.console-clear:hover {
  color: var(--color-text-muted);
}

.console-output {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-xs) var(--space-md);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.7rem;
  line-height: 1.5;
}

.console-line {
  display: flex;
  gap: var(--space-md);
}

.console-time {
  color: var(--color-text-dim);
  flex-shrink: 0;
}

.console-message {
  color: var(--color-text-muted);
}

.console-message.success {
  color: var(--color-success);
}

.console-message.error {
  color: var(--color-error);
}

.console-message.warning {
  color: var(--color-warning);
}

/* Echo Times Display */
.echo-times {
  margin-top: var(--space-sm);
  padding: var(--space-sm);
  background: var(--color-surface-elevated);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.echo-times-title {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.echo-time-item {
  color: var(--color-text);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.echo-time-item:last-child {
  border-bottom: none;
}

/* Validation Messages */
.validation-message {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  margin-top: var(--space-sm);
}

.validation-message.error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

.validation-message.warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.validation-message.success {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.validation-message.info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary);
}

.validation-message svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  margin-top: 1px;
}

.validation-message.inline-warning {
  margin-top: var(--space-xs);
  margin-bottom: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.7rem;
}

/* Slice Type Buttons */
.slice-buttons {
  display: flex;
  gap: var(--space-xs);
  background: var(--color-surface-elevated);
  padding: 3px;
  border-radius: var(--radius-md);
}

.slice-btn {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slice-btn:hover {
  color: var(--color-text);
}

.slice-btn.active {
  background: var(--color-primary);
  color: white;
}

/* Colormap Select */
.colormap-select {
  width: auto;
  padding: var(--space-xs) var(--space-lg) var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
}

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

::-webkit-scrollbar-track {
  background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-border-light);
}

/* Responsive */
@media (max-width: 1024px) {
  .app-container {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr auto;
  }

  .app-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    max-height: 50vh;
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.mt-md {
  margin-top: var(--space-md);
}

.text-muted {
  color: var(--color-text-muted);
}

/* Checkbox Labels */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--color-text);
}

.checkbox-label input[type="checkbox"] {
  width: 14px;
  height: 14px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

/* ============================================
   dicompare Report
   ============================================ */

/* Sidebar button */
.btn-dicompare {
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  width: 100%;
  margin-top: var(--space-sm);
}

/* Modal sizing */
.dicompare-modal {
  max-width: 800px;
  max-height: 85vh;
}

.dicompare-modal .modal-body {
  overflow-y: auto;
  max-height: calc(85vh - 120px);
}

/* Loading state */
.dicompare-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
  gap: var(--space-md);
}

.dicompare-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: dicompare-spin 0.8s linear infinite;
}

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

.dicompare-loading-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
}

.dicompare-progress-bar {
  width: 100%;
  max-width: 300px;
  height: 4px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.dicompare-progress-fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 0%;
}

/* Error state */
.dicompare-error {
  padding: var(--space-lg);
  color: var(--color-error);
  text-align: center;
}

/* Schema header */
.dicompare-schema-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.dicompare-schema-header h4 {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}

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

.dicompare-schema-header p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: var(--space-xs) 0 0;
}

.dicompare-schema-authors {
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

/* Summary badges */
.dicompare-summary {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.dicompare-summary-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.dicompare-summary-badge.pass {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.dicompare-summary-badge.fail {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

.dicompare-summary-badge.warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.dicompare-summary-badge.na {
  background: rgba(100, 100, 100, 0.1);
  color: var(--color-text-dim);
  border: 1px solid var(--color-border);
}

/* Acquisition section */
.dicompare-acquisition {
  margin-bottom: var(--space-lg);
}

.dicompare-acquisition h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

.dicompare-section-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: var(--space-md) 0 var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Compliance table */
.dicompare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin-bottom: var(--space-md);
}

.dicompare-table th {
  text-align: left;
  padding: var(--space-xs) var(--space-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-elevated);
}

.dicompare-table td {
  padding: var(--space-xs) var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: top;
}

.dicompare-table tr:hover td {
  background: var(--color-surface-elevated);
}

.dicompare-field-name {
  font-weight: 500;
}

.dicompare-field-tag {
  font-family: monospace;
  font-size: 0.7rem;
  color: var(--color-text-dim);
}

/* Status indicators */
.dicompare-status {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  white-space: nowrap;
}

.dicompare-status-pass {
  color: var(--color-success);
  background: var(--color-success-bg);
}

.dicompare-status-fail {
  color: var(--color-error);
  background: var(--color-error-bg);
}

.dicompare-status-warning {
  color: var(--color-warning);
  background: var(--color-warning-bg);
}

.dicompare-status-na,
.dicompare-status-unknown {
  color: var(--color-text-dim);
  background: rgba(100, 100, 100, 0.1);
}

.dicompare-status-message {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.dicompare-rule-description {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.dicompare-empty {
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--space-lg);
  font-size: 0.85rem;
}

/* Unchecked fields (collapsible) */
.dicompare-unchecked {
  margin-top: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.dicompare-unchecked-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-surface-elevated);
  border: none;
  cursor: pointer;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: left;
}

.dicompare-unchecked-toggle:hover {
  background: var(--color-border);
}

.dicompare-chevron {
  font-size: 0.6rem;
  transition: transform 0.2s ease;
}

.dicompare-unchecked-content {
  border-top: 1px solid var(--color-border);
}