/* Tool Workspace & Modal Styling */

.workspace-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1000;
  display: none;
  background: var(--modal-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.workspace-modal.active {
  display: flex;
  opacity: 1;
}

.workspace-dialog {
  width: 96vw;
  height: 94vh;
  max-width: 1550px;
  margin: auto;
  background: var(--modal-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalScaleIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleIn {
  from {
    transform: scale(0.96) translateY(10px);
    opacity: 0;
  }
  to {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

/* Workspace Header */
.workspace-header {
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
}

.workspace-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.workspace-tool-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: var(--primary-light);
  color: var(--primary);
}

.workspace-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.workspace-subtitle {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.workspace-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Workspace Body Layout */
.workspace-body {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
  background: var(--bg-tertiary);
}

/* Dropzone (When no files uploaded) */
.dropzone-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: var(--bg-card);
  margin: 20px;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border-hover);
  transition: var(--transition);
  text-align: center;
  cursor: pointer;
  position: relative;
}

.dropzone-container.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.dropzone-icon-bubble {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 2.2rem;
  transition: transform 0.3s ease;
}

.dropzone-container:hover .dropzone-icon-bubble {
  transform: scale(1.1) rotate(5deg);
}

.dropzone-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.dropzone-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 460px;
  margin-bottom: 24px;
}

.dropzone-formats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 20px;
}

.format-chip {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
}

/* PDF to JPG Specific Dropzone Styling */
.dropzone-btn-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  position: relative;
}

.cloud-buttons {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.btn-cloud-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #ef4444;
  color: #ffffff;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(239, 68, 68, 0.35);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn-cloud-icon:hover {
  background: #dc2626;
  transform: scale(1.12);
}

.dropzone-hint {
  font-size: 0.95rem;
  color: var(--text-tertiary);
  margin-top: 14px;
  font-weight: 500;
}

.dropzone-container.pdf-mode {
  border-color: rgba(239, 68, 68, 0.4);
}

.dropzone-container.pdf-mode.dragover {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.08);
}

.dropzone-container.pdf-mode .dropzone-icon-bubble {
  background: rgba(239, 68, 68, 0.12);
  color: #ef4444;
}

.dropzone-container.pdf-mode .btn-primary {
  background: #e5322d;
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: #ffffff;
  font-size: 1.15rem;
  font-weight: 700;
  padding: 16px 42px;
  border-radius: 12px;
  box-shadow: 0 10px 25px -4px rgba(239, 68, 68, 0.45);
  border: none;
}

.dropzone-container.pdf-mode .btn-primary:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  box-shadow: 0 14px 28px -4px rgba(239, 68, 68, 0.55);
}

/* Main Interactive Area (When files are loaded) */
.workspace-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.canvas-viewport {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--workspace-bg);
  background-image: 
    linear-gradient(45deg, var(--checkerboard-1) 25%, transparent 25%), 
    linear-gradient(-45deg, var(--checkerboard-1) 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, var(--checkerboard-1) 75%), 
    linear-gradient(-45deg, transparent 75%, var(--checkerboard-1) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
  padding: 24px;
  user-select: none;
}

.canvas-viewport canvas,
.canvas-viewport img {
  max-width: 90%;
  max-height: 85%;
  object-fit: contain;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  border-radius: 4px;
  transition: transform 0.2s ease;
}

/* Split Compare Slider for Upscale & Compress */
.compare-container {
  position: relative;
  max-width: 90%;
  max-height: 85%;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.compare-image-before,
.compare-image-after {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.compare-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  border-right: 3px solid #ffffff;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.5);
}

.compare-slider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #ffffff;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  cursor: ew-resize;
}

.compare-badge {
  position: absolute;
  top: 14px;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.65);
  color: #ffffff;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  backdrop-filter: blur(4px);
}
.compare-badge.before { left: 14px; }
.compare-badge.after { right: 14px; }

/* Bottom Thumbnail Queue */
.workspace-queue {
  height: 90px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  overflow-x: auto;
  flex-shrink: 0;
}

.queue-item {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  overflow: hidden;
  cursor: pointer;
  flex-shrink: 0;
  background: var(--bg-tertiary);
  transition: var(--transition);
}

.queue-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.queue-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-glow);
}

.queue-item-remove {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 20px;
  height: 20px;
  background: rgba(244, 63, 94, 0.9);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 5;
}

.queue-item-download {
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 22px;
  height: 22px;
  background: rgba(59, 130, 246, 0.95);
  color: #ffffff;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 5;
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.queue-item-index {
  position: absolute;
  bottom: 2px;
  left: 2px;
  padding: 1px 5px;
  background: rgba(0, 0, 0, 0.65);
  color: #ffffff;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  font-family: var(--font-mono);
  pointer-events: none;
}

.queue-item:hover .queue-item-remove,
.queue-item:hover .queue-item-download {
  opacity: 1;
}

.queue-item-remove:hover {
  transform: scale(1.15);
  background: #f43f5e;
}

.queue-item-download:hover {
  transform: scale(1.15);
  background: #2563eb;
}

.queue-add-btn {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  border: 2px dashed var(--border-hover);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 600;
  gap: 4px;
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition);
}

.queue-add-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

/* Sidebar Controls Panel */
.workspace-sidebar {
  width: 380px;
  background: var(--bg-card);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-section {
  padding: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-section-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.control-group {
  margin-bottom: 16px;
}

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

.control-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.control-badge-val {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--primary);
  font-weight: 700;
}

/* Range Slider */
.slider-input {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--border-color);
  outline: none;
  transition: var(--transition);
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(59, 130, 246, 0.4);
  transition: transform 0.15s ease;
}

.slider-input::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Option Buttons / Segments */
.segmented-control {
  display: flex;
  background: var(--bg-tertiary);
  padding: 4px;
  border-radius: var(--radius-md);
  gap: 4px;
}

.segment-btn {
  flex: 1;
  padding: 8px 10px;
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.segment-btn.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Form Inputs */
.form-input {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.88rem;
  outline: none;
  transition: var(--transition);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Dimension inputs with aspect lock */
.dimension-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
}
.dimension-lock-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  flex-shrink: 0;
}
.dimension-lock-btn.locked {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}

/* Preset Pills Grid */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.preset-pill {
  padding: 8px 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: var(--transition);
}

.preset-pill:hover,
.preset-pill.active {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

.preset-pill span {
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

/* Sidebar Footer Action */
.sidebar-footer {
  margin-top: auto;
  padding: 20px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-process {
  width: 100%;
  padding: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 100%);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 4px 14px var(--primary-glow);
  transition: var(--transition);
}

.btn-process:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
}

.btn-process:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.download-actions-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.btn-download-single {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid var(--primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-download-single:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
}

.btn-download-all {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.btn-download-all:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

/* Statistics box in sidebar */
.stats-box {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stats-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stats-saving {
  color: var(--accent-emerald);
  font-weight: 700;
}

/* Loading Overlay */
.processing-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  color: #ffffff;
  z-index: 50;
}

.processing-overlay.active {
  display: flex;
}

.spinner {
  width: 44px;
  height: 44px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Responsive workspace */
@media (max-width: 960px) {
  .workspace-dialog {
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }
  .workspace-body {
    flex-direction: column;
  }
  .workspace-sidebar {
    width: 100%;
    max-height: 45vh;
    border-left: none;
    border-top: 1px solid var(--border-color);
  }
}