:root {
  --bg-primary: #0d0f14;
  --bg-secondary: #161a22;
  --bg-tertiary: #1e232d;
  --accent: #7c3aed;
  --accent-hover: #8b5cf6;
  --accent-muted: rgba(124, 58, 237, 0.2);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: #2d3548;
  --success: #22c55e;
  --error: #ef4444;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

#root { min-height: 100vh; }

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.header { text-align: center; margin-bottom: 2.5rem; }

.header h1 {
  font-size: 2.25rem;
  font-weight: 700;
  margin: 0;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-secondary);
  margin: 0.5rem 0 0;
  font-size: 1rem;
}

.version {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
}

.hidden-source {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  transition: all 0.2s ease;
  background: var(--bg-secondary);
  position: relative;
}

.dropzone.dragging {
  border-color: var(--accent);
  background: var(--accent-muted);
}

.dropzone.has-images { padding: 1.5rem; }

.file-input {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.dropzone-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.dropzone-icon { font-size: 2.5rem; opacity: 0.8; }
.dropzone-text { font-size: 1.1rem; font-weight: 500; }
.dropzone-hint { color: var(--text-muted); font-size: 0.9rem; }
.dropzone-formats {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border-radius: 12px;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.control-group label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.95rem;
}

.control-group label input[type='checkbox'] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.control-label { color: var(--text-secondary); font-size: 0.9rem; }

.control-group select {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.9rem;
  min-width: 140px;
}

.control-group.actions { gap: 0.75rem; }
.control-group.export-btns { margin-left: auto; gap: 0.75rem; }

.sliders-row { gap: 2rem; margin-top: 1rem; }

.slider-group { flex: 1; min-width: 180px; }

.slider-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.slider-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-primary);
  min-width: 30px;
  text-align: right;
}

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

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
}

.slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
}

.btn-accent {
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--accent);
  background: var(--accent-muted);
  color: var(--accent-hover);
  transition: all 0.2s;
}

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

.btn-film-negative {
  padding: 0.85rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.btn-secondary.active {
  background: var(--accent-muted);
  border-color: var(--accent);
  color: var(--accent-hover);
}

.btn {
  padding: 0.6rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

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

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

.live-preview-section {
  margin: 1.5rem 0;
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid var(--border);
}

.preview-title {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.live-preview {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.live-preview-display {
  background: var(--bg-primary);
  border-radius: 8px;
  overflow: hidden;
  max-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.live-preview-img {
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
  display: block;
}

.live-preview-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.live-preview-name {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.live-preview-select {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-size: 0.9rem;
  min-width: 200px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid transparent;
  transition: all 0.2s;
}

.card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.card.preview-image {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-muted);
}

.card-preview {
  position: relative;
  min-height: 120px;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
}

.preview-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.card:hover .card-overlay,
.card.selected .card-overlay {
  opacity: 1;
}

.card-overlay .check {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: bold;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  gap: 0.5rem;
}

.card-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.btn-preview {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.7rem;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-preview:hover,
.btn-preview.active {
  background: var(--accent-muted);
  border-color: var(--accent);
  color: var(--accent);
}

.btn-remove {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0 0.25rem;
  line-height: 1;
  transition: color 0.2s;
}

.btn-remove:hover { color: var(--error); }

@media (max-width: 640px) {
  .controls { flex-direction: column; align-items: stretch; }
  .control-group.actions { margin-left: 0; }
}