/* ==========================================================================
   App Container & Header
   ========================================================================== */
.app-container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  min-height: 100vh;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) var(--space-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-premium);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-back-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.logo-back-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  box-shadow: var(--glow-primary);
  background: rgba(102, 252, 241, 0.05);
}

.app-header h1 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, rgba(255, 255, 255, 0.75) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
}

.badge {
  background: rgba(102, 252, 241, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(102, 252, 241, 0.2);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 0 10px rgba(102, 252, 241, 0.1);
}

/* ==========================================================================
   Main Grid Layout
   ========================================================================== */
.main-content {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: var(--space-xl);
  align-items: start;
  flex: 1;
}

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

/* Glassmorphism Panel Base */
.glass-panel {
  background: rgba(22, 27, 34, 0.6);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-premium);
  padding: var(--space-xl);
}

.panel-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: var(--space-sm);
}

.panel-title span {
  color: var(--accent-primary);
  font-size: 22px;
}

/* ==========================================================================
   Settings Form Controls
   ========================================================================== */
.control-group {
  margin-bottom: var(--space-xl);
}

.group-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Presets Grid Control */
.presets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.presets-grid button:last-child {
  grid-column: span 2;
}

.preset-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 10px var(--space-md);
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: all var(--transition-fast);
  color: var(--text-color);
  font-family: var(--font-body);
}

.preset-card:hover {
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.preset-card.active {
  background: rgba(102, 252, 241, 0.05);
  border-color: var(--accent-primary);
  box-shadow: var(--glow-primary);
}

.preset-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.preset-card.active .preset-name {
  color: var(--text-color);
}

.preset-value {
  font-size: 0.9rem;
  color: var(--accent-primary);
  font-family: var(--font-heading);
  font-weight: 700;
}

/* Custom Size Input Box */
.input-with-unit {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-unit input {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px 3rem 12px 16px;
  color: #fff;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.input-with-unit input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 12px rgba(102, 252, 241, 0.15);
  background: rgba(0, 0, 0, 0.35);
}

.input-with-unit .unit {
  position: absolute;
  right: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.input-helper {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* Format Selector (WebP / PNG Radio Buttons) */
.format-toggle {
  display: flex;
  gap: var(--space-sm);
}

.format-toggle input[type="radio"] {
  display: none;
}

.format-toggle .toggle-btn {
  flex: 1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px 8px;
  text-align: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.format-toggle .toggle-btn span.material-symbols-rounded {
  font-size: 22px;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.format-toggle .toggle-btn:hover {
  background: var(--glass-hover);
  color: var(--text-color);
  border-color: rgba(255, 255, 255, 0.15);
}

.format-toggle input[type="radio"]:checked + .toggle-btn {
  background: rgba(102, 252, 241, 0.05);
  border-color: var(--accent-primary);
  color: #fff;
  box-shadow: var(--glow-primary);
}

.format-toggle input[type="radio"]:checked + .toggle-btn span.material-symbols-rounded {
  color: var(--accent-primary);
  transform: scale(1.1);
}

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

/* Slider Controls */
.label-with-value {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.label-with-value .group-label {
  margin-bottom: 0;
}

.value-display {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-primary);
  background: rgba(102, 252, 241, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  outline: none;
  cursor: pointer;
  margin: 12px 0;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(102, 252, 241, 0.3);
  transition: all var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  background: #fff;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Info Box Banner */
.info-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-top: var(--space-xl);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.info-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.info-title span {
  font-size: 16px;
}

/* ==========================================================================
   Right Area: Workspace Panel & Dropzone
   ========================================================================== */
.workspace-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  min-width: 0;
}

/* Drag and Drop Zone Container */
.drop-zone {
  background: rgba(22, 27, 34, 0.3);
  border: 2px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 5rem 2rem;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-premium);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.drop-zone::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, rgba(102, 252, 241, 0.03) 0%, transparent 70%);
  opacity: 0;
  transition: all var(--transition-normal);
  pointer-events: none;
}

.drop-zone:hover {
  background: rgba(22, 27, 34, 0.4);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-premium), var(--glow-primary);
}

.drop-zone:hover::before {
  opacity: 1;
}

.drop-zone.dragover {
  background: rgba(102, 252, 241, 0.04);
  border-color: var(--accent-primary);
  border-style: solid;
  transform: scale(0.995);
  box-shadow: var(--shadow-premium), var(--glow-primary);
  animation: pulseBorder 1.5s infinite;
}

@keyframes pulseBorder {
  0% { border-color: var(--accent-primary); }
  50% { border-color: var(--accent-secondary); }
  100% { border-color: var(--accent-primary); }
}

.drop-zone input[type="file"] {
  display: none;
}

.drop-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  pointer-events: none;
}

.drop-icon {
  width: 72px;
  height: 72px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin-bottom: 6px;
  transition: all var(--transition-normal);
}

.drop-zone:hover .drop-icon {
  transform: scale(1.1) translateY(-4px);
  background: rgba(102, 252, 241, 0.08);
  color: var(--accent-primary);
  border-color: rgba(102, 252, 241, 0.2);
  box-shadow: inset 0 0 15px rgba(102, 252, 241, 0.1);
}

.drop-zone.dragover .drop-icon {
  transform: scale(1.1) rotate(5deg);
  background: rgba(155, 108, 255, 0.08);
  color: var(--accent-secondary);
  border-color: rgba(155, 108, 255, 0.2);
  box-shadow: inset 0 0 15px rgba(155, 108, 255, 0.1);
}

.drop-icon span {
  font-size: 32px;
}

.drop-zone h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
}

.browse-link {
  color: var(--accent-primary);
  text-decoration: underline;
  font-weight: 700;
}

.file-types {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   Results Queue & List Header
   ========================================================================== */
.results-container {
  background: rgba(22, 27, 34, 0.6);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-premium);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
}

.section-title span {
  font-size: 22px;
}

.batch-actions {
  display: flex;
  gap: var(--space-sm);
}

/* Images Grid Layout */
.images-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

/* Image Card Row */
.image-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.image-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
  width: 0;
  transition: width var(--transition-slow);
}

.image-card.status-done::after {
  width: 100%;
}

.image-card.status-processing::after {
  width: 50%;
  animation: pulseBar 1.5s infinite;
}

@keyframes pulseBar {
  0% { opacity: 0.6; }
  50% { opacity: 1; }
  100% { opacity: 0.6; }
}

.image-card:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

/* Image Card Thumbnail */
.image-thumbnail-container {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

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

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

/* Image Info (Left) */
.image-details {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.image-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.image-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.meta-size-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.scale-metric-box {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

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

.metric-col-title {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.metric-col-val {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-color);
  font-family: var(--font-heading);
}

.metric-col-val.target-color {
  color: var(--accent-primary);
}

.scale-arrow {
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

.scale-arrow span {
  font-size: 14px;
}

/* Status Badging */
.status-badge-container {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 100px;
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-badge.status-ready {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--glass-border);
}

.status-badge.status-processing {
  background: rgba(155, 108, 255, 0.1);
  color: var(--accent-secondary);
  border: 1px solid rgba(155, 108, 255, 0.2);
}

.status-badge.status-done {
  background: rgba(102, 252, 241, 0.1);
  color: var(--accent-primary);
  border: 1px solid rgba(102, 252, 241, 0.2);
}

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

.status-badge span {
  font-size: 14px;
}

/* Actions */
.card-actions {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.btn-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.btn-icon span {
  font-size: 16px;
}

.btn-danger-icon {
  background: rgba(239, 68, 68, 0.08) !important;
  border: 1px solid rgba(239, 68, 68, 0.2) !important;
  color: var(--error) !important;
}

.btn-danger-icon:hover {
  background: var(--error) !important;
  border-color: var(--error) !important;
  color: #000 !important;
  box-shadow: 0 0 10px rgba(255, 138, 138, 0.3) !important;
}

/* Spinner Loader */
.spinner {
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: #fff;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.8s linear infinite;
}

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

/* ==========================================================================
   Footer App Bar
   ========================================================================== */
.app-footer-bar {
  margin-top: auto;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.app-footer-bar p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Toast Notification Banner (Client-side overlays)
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 350px;
  width: 90%;
}

.toast {
  background: rgba(22, 27, 34, 0.85);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  box-shadow: var(--shadow-premium);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-color);
  font-size: 0.85rem;
  font-weight: 500;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: right center;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(50px) scale(0.9); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}

.toast span.material-symbols-rounded {
  font-size: 20px;
}

.toast-success {
  border-color: var(--success);
  color: #fff;
  box-shadow: 0 5px 15px rgba(102, 252, 171, 0.1);
}

.toast-success span.material-symbols-rounded {
  color: var(--success);
}

.toast-error {
  border-color: var(--error);
  color: #fff;
  box-shadow: 0 5px 15px rgba(255, 138, 138, 0.1);
}

.toast-error span.material-symbols-rounded {
  color: var(--error);
}

.toast-info {
  border-color: var(--accent-secondary);
  color: #fff;
  box-shadow: 0 5px 15px rgba(155, 108, 255, 0.1);
}

.toast-info span.material-symbols-rounded {
  color: var(--accent-secondary);
}