/* ==========================================================================
   Shrinkora - Minimalist Black & White Theme
   Strictly Monochrome / Architectural / Brutalist Minimal
   ========================================================================== */

:root {
  /* Light Theme (Default) */
  --bg-primary: #ffffff;
  --bg-secondary: #fafafa;
  --bg-tertiary: #f2f2f2;
  --bg-card: #ffffff;
  --bg-hover: #eaeaea;
  
  --text-primary: #000000;
  --text-secondary: #555555;
  --text-muted: #888888;
  --text-inverted: #ffffff;
  
  --border-light: #e5e5e5;
  --border-medium: #cccccc;
  --border-strong: #000000;
  
  --btn-primary-bg: #000000;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #262626;
  
  --btn-secondary-bg: #ffffff;
  --btn-secondary-text: #000000;
  --btn-secondary-border: #000000;
  --btn-secondary-hover: #f0f0f0;

  --badge-bg: #000000;
  --badge-text: #ffffff;
  
  --success-tag-bg: #000000;
  --success-tag-text: #ffffff;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Mono", Consolas, "Courier New", monospace;
  
  --radius-sm: 2px;
  --radius-md: 4px;
}

[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #121212;
  --bg-tertiary: #1a1a1a;
  --bg-card: #111111;
  --bg-hover: #222222;
  
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #666666;
  --text-inverted: #000000;
  
  --border-light: #262626;
  --border-medium: #404040;
  --border-strong: #ffffff;
  
  --btn-primary-bg: #ffffff;
  --btn-primary-text: #000000;
  --btn-primary-hover: #e5e5e5;
  
  --btn-secondary-bg: #121212;
  --btn-secondary-text: #ffffff;
  --btn-secondary-border: #ffffff;
  --btn-secondary-hover: #222222;

  --badge-bg: #ffffff;
  --badge-text: #000000;
  
  --success-tag-bg: #ffffff;
  --success-tag-text: #000000;
}

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

html {
  font-size: 14px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  position: relative;
  overflow-x: hidden;
}

.bg-canvas {
  display: none !important;
  pointer-events: none;
}

.mono-val {
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

/* App Wrapper */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--border-strong);
  margin-bottom: 2rem;
  gap: 1.5rem;
}

.header-left {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  font-size: 1.6rem;
  line-height: 1;
}

.logo-title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.version-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.privacy-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 6px 12px;
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.privacy-dot {
  width: 7px;
  height: 7px;
  background-color: var(--text-primary);
  border-radius: 50%;
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.85); }
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.theme-toggle:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.theme-icon {
  font-size: 1.2rem;
  line-height: 1;
}

/* ==========================================================================
   Main Content Layout
   ========================================================================== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ==========================================================================
   Section: Settings Panel
   ========================================================================== */
.settings-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 0.75rem;
}

.section-title {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.section-note {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.setting-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.setting-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Mode toggles */
.mode-toggles {
  display: flex;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.mode-btn {
  flex: 1;
  padding: 8px 10px;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-medium);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.mode-btn:last-child {
  border-right: none;
}

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

.mode-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

/* Dynamic control panels */
.mode-panel {
  display: none;
  flex-direction: column;
  gap: 0.75rem;
}

.mode-panel.active {
  display: flex;
}

.target-size-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.target-direct-input {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.target-input-row {
  display: flex;
  gap: 0.5rem;
}

.num-input {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  outline: none;
}

.num-input-sm {
  width: 76px;
  padding: 4px 8px;
  font-size: 0.88rem;
  font-weight: 600;
  text-align: right;
  flex: none;
}

.num-input:focus {
  border-width: 2px;
}

.unit-toggle {
  display: flex;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.unit-toggle-sm .unit-btn {
  padding: 4px 9px;
  font-size: 0.75rem;
}

.unit-btn {
  padding: 8px 14px;
  background: var(--bg-primary);
  border: none;
  border-right: 1px solid var(--border-medium);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}

.unit-btn:last-child {
  border-right: none;
}

.unit-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
}

/* Quick presets */
.quick-presets {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.preset-label {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.preset-btn {
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.12s ease;
}

.preset-btn:hover {
  border-color: var(--border-strong);
}

.preset-btn.active {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
}

/* Sliders */
.slider-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slider-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--border-medium);
  outline: none;
  border-radius: 3px;
  cursor: pointer;
}

.slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--btn-primary-bg);
  border: 2px solid var(--bg-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 0 1px var(--border-strong);
}

.slider-input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--btn-primary-bg);
  border: 2px solid var(--bg-primary);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 0 1px var(--border-strong);
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.slider-input-sm {
  width: 100%;
  height: 5px;
  margin-top: 5px;
  display: block;
}

.slider-input-sm::-webkit-slider-thumb {
  width: 14px;
  height: 14px;
}

.slider-input-sm::-moz-range-thumb {
  width: 14px;
  height: 14px;
}

/* Select input */
.select-input {
  padding: 9px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  outline: none;
}

.select-input:focus {
  border-color: var(--border-strong);
}

.format-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ==========================================================================
   Section: Dropzone
   ========================================================================== */
.dropzone-section {
  width: 100%;
}

.dropzone {
  border: 2px dashed var(--border-strong);
  background: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius-sm);
  padding: 3.5rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

[data-theme="dark"] .dropzone {
  background: rgba(18, 18, 18, 0.88);
}

.dropzone:hover, .dropzone.drag-over {
  background: var(--bg-hover);
  border-style: solid;
  box-shadow: inset 0 0 0 2px var(--border-strong);
}

.file-input-hidden {
  display: none;
}

.dropzone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  pointer-events: none;
}

.drop-icon {
  font-size: 2.4rem;
  line-height: 1;
  color: var(--text-primary);
}

.drop-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.drop-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.supported-formats {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.format-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 7px;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border: 1px solid var(--btn-primary-bg);
}

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

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

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

.btn-secondary:hover {
  background: var(--btn-secondary-hover);
}

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

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 0.72rem;
}

/* ==========================================================================
   Batch Action Toolbar
   ========================================================================== */
.batch-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  gap: 1rem;
  flex-wrap: wrap;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.82rem;
}

.queue-divider {
  color: var(--border-medium);
}

.savings-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-sm);
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   File Queue List Section
   ========================================================================== */
.file-list-section {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  overflow: hidden;
}

.file-list-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1.3fr 1.2fr;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-medium);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  gap: 1rem;
}

.file-cards-container {
  display: flex;
  flex-direction: column;
}

/* Single File Row Card */
.file-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1.3fr 1.2fr;
  padding: 1rem;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
  gap: 1rem;
  transition: background-color 0.12s ease;
}

.file-row:last-child {
  border-bottom: none;
}

.file-row:hover {
  background-color: var(--bg-secondary);
}

/* Col 1: File / Preview */
.file-col-info {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.file-thumbnail {
  width: 48px;
  height: 48px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  object-fit: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  flex-shrink: 0;
  overflow: hidden;
}

.file-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-meta-group {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.file-name {
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-primary);
}

.file-submeta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.badge-format {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 5px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
}

/* Col 2: Original Size */
.file-col-orig {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Col 3: Desired Target Override */
.file-col-target {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
  width: 100%;
}

.target-row-input {
  display: grid;
  grid-template-columns: minmax(150px, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
}

.target-estimate {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.target-stepper {
  display: flex;
  align-items: center;
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-primary);
}

.target-step-btn {
  width: 28px;
  height: 32px;
  border: none;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.target-step-btn:hover {
  background: var(--bg-hover);
}

.target-step-btn:focus-visible {
  outline: 2px solid var(--border-strong);
  outline-offset: -2px;
}

.target-input-sm {
  width: 100%;
  min-width: 70px;
  padding: 6px 10px;
  background: var(--bg-primary);
  border: none;
  border-left: 1px solid var(--border-strong);
  border-right: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: right;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  -moz-appearance: textfield;
}

.target-input-sm::-webkit-outer-spin-button,
.target-input-sm::-webkit-inner-spin-button {
  -webkit-appearance: none;
  appearance: none;
  margin: 0;
}

.target-input-sm:focus {
  outline: none;
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

.target-unit-select {
  padding: 6px 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s ease;
}

.target-unit-select:focus {
  border-color: var(--border-strong);
}

/* Col 4: Result */
.file-col-result {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.status-badge.status-compressing {
  color: var(--text-primary);
  text-align: center;
}

.status-badge.status-done {
  color: var(--text-primary);
  font-weight: 700;
}

.status-badge.status-error {
  text-decoration: underline;
}

.result-size-line {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.reduction-pill {
  font-size: 0.68rem;
  padding: 1px 5px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-sm);
}

/* Progress bar */
.progress-bar-wrap {
  width: 100%;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.progress-bar-fill {
  height: 100%;
  background: var(--text-primary);
  width: 0%;
  transition: width 0.2s ease;
}

/* Diamond Loading Spinner */
.diamond-spinner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.diamond-spinner svg {
  width: 20px;
  height: 20px;
  display: block;
}

.diamond-spinner rect {
  opacity: 0;
}

@keyframes spin-pixel {
  0% { opacity: 0; }
  1% { opacity: 1; }
  100% { opacity: 0; }
}

.pixel-1 { animation: spin-pixel 0.8s ease-in-out 0s infinite; }
.pixel-2 { animation: spin-pixel 0.8s ease-in-out 0.1s infinite; }
.pixel-3 { animation: spin-pixel 0.8s ease-in-out 0.2s infinite; }
.pixel-4 { animation: spin-pixel 0.8s ease-in-out 0.3s infinite; }
.pixel-5 { animation: spin-pixel 0.8s ease-in-out 0.4s infinite; }
.pixel-6 { animation: spin-pixel 0.8s ease-in-out 0.5s infinite; }
.pixel-7 { animation: spin-pixel 0.8s ease-in-out 0.6s infinite; }
.pixel-8 { animation: spin-pixel 0.8s ease-in-out 0.7s infinite; }

/* Col 5: Actions */
.file-col-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
}

.file-list-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  gap: 1rem;
  flex-wrap: wrap;
}

.file-list-footer-hint {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Empty State Cards
   ========================================================================== */
.empty-state {
  margin-top: 1rem;
}

.empty-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.info-box {
  border: 1px solid var(--border-light);
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.info-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}

.info-title {
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  font-family: var(--font-mono);
}

.info-body {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ==========================================================================
   Comparison Modal
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
  backdrop-filter: blur(2px);
}

.modal-card {
  background: var(--bg-primary);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-sm);
  max-width: 960px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-medium);
  background: var(--bg-secondary);
}

.modal-title {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.modal-meta {
  font-size: 0.78rem;
  color: var(--text-secondary);
  display: block;
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0 4px;
}

.modal-body {
  flex: 1;
  padding: 1.5rem;
  overflow: hidden;
}

.comparison-container {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 1.5rem;
  min-height: 380px;
}

.comparison-pane {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pane-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  display: inline-block;
  align-self: flex-start;
}

.pane-media {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  min-height: 320px;
  padding: 1rem;
}

.pane-media img {
  max-width: 100%;
  max-height: 480px;
  object-fit: contain;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  display: block;
}

.comparison-divider {
  background: var(--border-medium);
  width: 1px;
}

/* Ensure images stay centered in their panes during zoom & pan */
.image-zoom-wrapper img {
  display: block;
}

.modal-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-medium);
  background: var(--bg-secondary);
}

/* Zoom Controls */
.zoom-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.zoom-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.zoom-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 110px;
  height: 4px;
  background: var(--border-medium);
  outline: none;
  border-radius: 2px;
  cursor: pointer;
}

.zoom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  background: var(--border-strong);
  border-radius: 50%;
  cursor: pointer;
}

.zoom-slider::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--border-strong);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.zoom-value {
  min-width: 34px;
  text-align: center;
}

/* Image Zoom Wrapper */
.image-zoom-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  overflow: hidden;
  touch-action: none;
}

.image-zoom-wrapper img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  width: auto;
  height: auto;
  transform-origin: center center;
  display: block;
  pointer-events: auto;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.runtime-notice {
  margin-bottom: 1rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border-medium);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.5;
}

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

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

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 860px) {
  .app-container {
    padding: 1.25rem 0.9rem 2rem;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
  }

  .header-right {
    width: 100%;
    justify-content: space-between;
  }

  .privacy-pill {
    font-size: 0.64rem;
    padding: 5px 10px;
  }

  .file-list-header {
    display: none;
  }
  
  .file-row {
    grid-template-columns: 1fr;
    gap: 0.85rem;
    padding: 1.25rem;
  }

  .file-col-target {
    min-width: 0;
  }

  .target-row-input {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .target-stepper {
    width: 100%;
  }

  .target-input-sm {
    flex: 1;
    width: auto;
  }

  .file-col-actions {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  
  .comparison-container {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1px 1fr;
  }

  .batch-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .toolbar-right {
    justify-content: stretch;
  }
  
  .toolbar-right .btn {
    flex: 1;
  }

  .modal-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .dropzone {
    min-height: 220px;
    padding: 1rem;
  }

  .drop-title {
    font-size: 1.1rem;
  }

  .supported-formats {
    gap: 0.35rem;
  }

  .format-tag {
    font-size: 0.62rem;
    padding: 3px 6px;
  }

  .btn,
  .theme-toggle {
    min-height: 38px;
  }
}