/**
 * Document Classifier - Application Styles
 * 
 * Dark theme matching the original Python/Tkinter application.
 * Requirements: 1.1, 1.2, 1.3, 1.4, 5.5, 6.5, 8.1, 8.2, 8.3, 10.1, 13.1
 */

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

:root {
  /* Color scheme matching original app */
  --bg-primary: #2d2d2d;
  --bg-secondary: #3d3d3d;
  --bg-hover: #4d4d4d;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #aaaaaa;
  --text-dimmed: #888888;
  --success: #28a745;
  --danger: #dc3545;
  --info: #4a90d9;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  
  /* Font sizes */
  --font-size-sm: 9px;
  --font-size-base: 11px;
  --font-size-lg: 14px;
  --font-size-xl: 16px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  line-height: 1.4;
}

/* === Main Layout === */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Classify-mode container: retains the original flex-column layout that
   used to live on #app itself. Wrapping this lets us swap in
   #label-review-mode without altering the classify-mode DOM. */
#classify-mode {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}
#classify-mode.hidden { display: none !important; }

/* === Document Viewer Area === */
#viewer-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--bg-primary);
}

#viewer-scroll {
  width: 100%;
  height: 100%;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

#document-viewer {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  padding: var(--spacing-lg);
}

#document-viewer canvas,
#document-viewer img {
  max-width: none; /* Allow zoom to exceed container */
  display: block;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

#document-viewer img {
  background-color: white;
}

/* Error message in viewer */
#document-viewer .error-message {
  color: var(--danger);
  font-size: var(--font-size-lg);
  text-align: center;
  padding: var(--spacing-lg);
}

/* Loading indicator */
#document-viewer .loading {
  color: var(--text-muted);
  font-size: var(--font-size-lg);
}

/* === Controls Panel === */
#controls-panel {
  flex-shrink: 0;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--bg-secondary);
  padding: var(--spacing-md) var(--spacing-lg);
}

.control-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) 0;
}

/* === Category Buttons === */
#category-row {
  padding: var(--spacing-sm) 0;
  flex-wrap: wrap;
}

.category-btn {
  padding: var(--spacing-md) 20px;
  font-size: var(--font-size-lg);
  font-weight: bold;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.1s ease;
  min-width: 80px;
}

.category-btn:hover {
  filter: brightness(1.15);
}

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

.category-btn:focus {
  outline: 2px solid var(--info);
  outline-offset: 2px;
}

/* === Navigation Buttons === */
.nav-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: normal;
  min-width: 100px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--bg-hover);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.nav-btn:hover {
  background-color: var(--bg-hover);
}

.nav-btn:active {
  background-color: var(--bg-secondary);
}

.nav-btn:focus {
  outline: 2px solid var(--info);
  outline-offset: 2px;
}

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

/* === Zoom Controls === */
#zoom-row {
  gap: var(--spacing-xs);
}

.zoom-btn {
  width: 36px;
  height: 30px;
  font-size: var(--font-size-lg);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--bg-hover);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.zoom-btn:hover {
  background-color: var(--bg-hover);
}

.zoom-btn:focus {
  outline: 2px solid var(--info);
  outline-offset: 2px;
}

.zoom-btn.reset-btn {
  width: auto;
  padding: 0 var(--spacing-md);
  font-size: 10px;
  margin-left: var(--spacing-sm);
}

#zoom-label {
  min-width: 60px;
  text-align: center;
  font-size: var(--font-size-base);
  color: var(--text-primary);
}

/* === Status Label === */
#status-row {
  padding: var(--spacing-sm) 0;
}

#status-label {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

#status-label.classified {
  font-weight: bold;
}

/* === Action Buttons === */
.action-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 10px;
  min-width: 100px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--bg-hover);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.action-btn:hover {
  background-color: var(--bg-hover);
}

.action-btn:focus {
  outline: 2px solid var(--info);
  outline-offset: 2px;
}

/* === Folder Label === */
#folder-row {
  padding-top: var(--spacing-xs);
}

#folder-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* === Modal Dialog === */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background-color: var(--bg-secondary);
  border-radius: 8px;
  padding: var(--spacing-lg);
  min-width: 400px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-xl);
  font-weight: normal;
  text-align: center;
}

/* === Config Dialog Categories === */
#config-categories {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.category-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background-color: var(--bg-primary);
  border-radius: 4px;
}

.category-item input[type="text"] {
  flex: 1;
  padding: var(--spacing-sm);
  font-size: var(--font-size-base);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--bg-hover);
  border-radius: 4px;
}

.category-item input[type="text"]:focus {
  outline: none;
  border-color: var(--info);
}

.category-item input[type="color"] {
  width: 40px;
  height: 30px;
  padding: 0;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.category-item .delete-btn {
  width: 30px;
  height: 30px;
  background-color: var(--danger);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-item .delete-btn:hover {
  filter: brightness(1.15);
}

/* === Modal Actions === */
.modal-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.modal-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: filter 0.15s ease;
}

.modal-btn:hover {
  filter: brightness(1.15);
}

.modal-btn.add-btn {
  background-color: var(--info);
  color: white;
  width: 100%;
}

.modal-buttons {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

.modal-btn.cancel-btn {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.modal-btn.save-btn {
  background-color: var(--success);
  color: white;
}

/* === Scrollbar Styling === */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #5d5d5d;
}

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

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

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

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

/* === Mode Toggle (top bar) === */
.mode-toggle-row {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-bottom: 1px solid #1a1a1a;
  flex-shrink: 0;
}
.mode-btn {
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid #1a1a1a;
  border-radius: 4px;
  padding: 6px 14px;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.mode-btn:hover { background: var(--bg-hover); }
.mode-btn.active {
  background: var(--info);
  color: #fff;
  border-color: var(--info);
  font-weight: 600;
}

/* === Label Review Mode Layout === */
#label-review-mode {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}
#label-review-mode.hidden { display: none !important; }

.lr-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  border-bottom: 1px solid #1a1a1a;
  flex-shrink: 0;
}

.lr-body {
  display: flex;
  flex: 1 1 auto;
  overflow: hidden;
  min-height: 0;
}

#lr-viewer-pane {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid #1a1a1a;
}
#lr-viewer-scroll {
  flex: 1 1 auto;
  overflow: auto;
  background: #1a1a1a;
  padding: var(--spacing-md);
}
#lr-viewer {
  display: inline-block;
  min-width: 100%;
  min-height: 100%;
}
.lr-page-wrapper {
  display: block;
  user-select: none;
}
.lr-overlay { overflow: visible; }

#lr-viewer-controls {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-top: 1px solid #1a1a1a;
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-shrink: 0;
}
#lr-zoom-label { min-width: 40px; text-align: center; color: var(--text-secondary); }

#lr-panel-pane {
  width: 360px;
  min-width: 300px;
  max-width: 50%;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  overflow: hidden;
}
#lr-entity-list {
  flex: 1 1 auto;
  overflow: auto;
  list-style: none;
  padding: var(--spacing-sm);
  margin: 0;
}
.lr-entity-row {
  background: var(--bg-secondary);
  border-left: 4px solid var(--text-dimmed);
  border-radius: 4px;
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}
.lr-entity-row:hover { background: var(--bg-hover); }
.lr-entity-row.lr-selected {
  box-shadow: 0 0 0 2px var(--info);
}
.lr-status-pending  { border-left-color: #95a5a6; }
.lr-status-approved { border-left-color: #27ae60; }
.lr-status-edited   { border-left-color: #e67e22; }
.lr-status-rejected { border-left-color: #e74c3c; opacity: 0.7; }
.lr-status-added    { border-left-color: #3498db; }

.lr-entity-header {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  margin-bottom: var(--spacing-xs);
  flex-wrap: wrap;
}
.lr-entity-type {
  font-weight: 600;
  color: var(--text-primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: var(--font-size-base);
}
.lr-status-badge {
  padding: 2px 6px;
  border-radius: 3px;
  font-size: var(--font-size-sm);
  color: #fff;
}
.lr-status-badge.lr-status-pending  { background: #95a5a6; color: #1a1a1a; }
.lr-status-badge.lr-status-approved { background: #27ae60; }
.lr-status-badge.lr-status-edited   { background: #e67e22; }
.lr-status-badge.lr-status-rejected { background: #e74c3c; }
.lr-status-badge.lr-status-added    { background: #3498db; }

.lr-entity-confidence {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  margin-left: auto;
}
.lr-entity-noloc {
  color: var(--text-dimmed);
  font-size: var(--font-size-sm);
  font-style: italic;
}
.lr-entity-input {
  width: 100%;
  padding: 4px 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid #1a1a1a;
  border-radius: 3px;
  font-size: var(--font-size-base);
  margin: var(--spacing-xs) 0;
}
.lr-entity-input:focus {
  outline: none;
  border-color: var(--info);
}
.lr-entity-actions {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.lr-btn {
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid #1a1a1a;
  font-size: var(--font-size-sm);
  cursor: pointer;
  color: #fff;
}
.lr-btn-approve { background: #27ae60; }
.lr-btn-reject  { background: #e74c3c; }
.lr-btn-reset   { background: var(--bg-primary); color: var(--text-secondary); }
.lr-btn-delete  { background: #7f8c8d; }
.lr-btn:hover { filter: brightness(1.1); }

/* Top toolbar inside the review panel (e.g. Approve-all). */
.lr-panel-toolbar {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border-bottom: 1px solid #1a1a1a;
  flex-shrink: 0;
}
.lr-btn-approve-all {
  background: #27ae60;
  color: #fff;
  border: 1px solid #1a1a1a;
  border-radius: 3px;
  padding: 6px 12px;
  font-size: var(--font-size-base);
  cursor: pointer;
  font-weight: 600;
}
.lr-btn-approve-all:hover { filter: brightness(1.1); }

/* Stacked layout so the Add button never slips off-screen when the
   dropdown + input consume all available width. Label → inputs → button,
   each on its own visual row, full-width button is easy to hit. */
#lr-add-field-row {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border-top: 1px solid #1a1a1a;
  flex-shrink: 0;
}
#lr-add-field-row .lr-add-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}
.lr-add-inputs {
  display: flex;
  gap: var(--spacing-xs);
  min-width: 0;
}
#lr-add-type {
  flex: 0 1 140px;
  min-width: 100px;
}
#lr-add-value {
  flex: 1 1 auto;
  min-width: 0;
}
#lr-add-type, #lr-add-value {
  padding: 4px 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid #1a1a1a;
  border-radius: 3px;
  font-size: var(--font-size-base);
}
.lr-btn-add {
  align-self: stretch;
}

.lr-bottom-bar {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border-top: 1px solid #1a1a1a;
  flex-shrink: 0;
}
.lr-status {
  flex: 1 1 auto;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* === Web-app only: folder picker + session + claim banner === */
#session-name {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid #1a1a1a;
  border-radius: 4px;
}
#session-name:focus { outline: none; border-color: var(--info); }

.lr-folder-list {
  list-style: none;
  padding: 0;
  margin: 0 0 12px 0;
  max-height: 320px;
  overflow-y: auto;
}
.lr-folder-list li {
  padding: 10px 12px;
  border: 1px solid #1a1a1a;
  border-radius: 4px;
  margin-bottom: 6px;
  background: var(--bg-primary);
  cursor: pointer;
  transition: background 0.12s;
}
.lr-folder-list li:hover { background: var(--bg-hover); }

#lr-top-bar { gap: var(--spacing-md); }
#lr-session-label {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  padding-left: 8px;
  border-left: 1px solid #1a1a1a;
}

.lr-claim-banner {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 3px;
  background: #e74c3c;
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 600;
}
.lr-claim-banner.hidden { display: none; }