:root {
  --bg: #0d0f14;
  --panel-bg: #161a22;
  --panel-border: #262c38;
  --text: #e8eaf0;
  --text-dim: #9aa2b1;
  --accent: #7c5cff;
  --accent-hover: #9178ff;
  --success: #3ddc97;
  --danger: #ff6b6b;
  --warning: #f5a623;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app-header {
  padding: 32px 24px 16px;
  text-align: center;
}

.app-header h1 {
  margin: 0 0 6px;
  font-size: 1.6rem;
}

.subtitle {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 24px 64px;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 32px;
}

.hidden {
  display: none !important;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--panel-border);
  border-radius: 10px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent);
  background: rgba(124, 92, 255, 0.06);
}

.dropzone-content svg {
  color: var(--text-dim);
  margin-bottom: 8px;
}

.dropzone-content p {
  margin: 4px 0;
  color: var(--text-dim);
}

/* Loading / spinner */
#loading-section,
#process-progress {
  text-align: center;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--panel-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 16px;
  animation: spin 0.8s linear infinite;
}

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

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

.warning-text {
  color: var(--warning);
  text-align: center;
  font-size: 0.9rem;
}

/* Buttons */
.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, opacity 0.15s;
}

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

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

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

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

.btn-secondary:hover {
  border-color: var(--text-dim);
}

/* Review toolbar */
.review-toolbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--bg);
  padding: 12px 0;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--panel-border);
  flex-wrap: wrap;
}

.review-summary {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.review-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Panel groups */
.panel-group {
  margin-bottom: 28px;
}

.panel-group-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.panel-group-header h2 {
  font-size: 1rem;
  margin: 0;
  text-transform: capitalize;
}

.panel-group-header .count {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
}

.icon-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
  transition: border-color 0.15s, opacity 0.15s;
  position: relative;
}

.icon-card.selected {
  border-color: var(--accent);
}

.icon-card.deselected {
  opacity: 0.35;
}

.icon-card img {
  width: 100%;
  height: 90px;
  object-fit: contain;
  background: #000;
  border-radius: 4px;
  display: block;
}

.icon-card .icon-check {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Process section */
.progress-bar-track {
  width: 100%;
  max-width: 400px;
  height: 8px;
  background: var(--panel-border);
  border-radius: 4px;
  margin: 16px auto 8px;
  overflow: hidden;
}

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

.progress-count {
  color: var(--text-dim);
  font-size: 0.85rem;
}

#process-done,
#process-error {
  text-align: center;
}

#process-done p,
#process-error p {
  margin-bottom: 16px;
}

#process-done .btn,
#process-error .btn {
  margin: 0 6px;
}