/* Background Remover - project-specific interface components. */

.remover-workspace {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
}

.remover-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.toolbar-status,
.toolbar-note,
.remover-status,
.image-meta {
  min-width: 0;
  display: flex;
  align-items: center;
}

.toolbar-status,
.remover-status {
  gap: var(--space-2xs);
}

.toolbar-note {
  text-align: right;
}

.remover-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.remover-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-lg);
}

.remover-panel-result {
  border-left: 1px solid var(--border);
}

.remover-panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
}

.panel-kicker {
  display: block;
  margin-bottom: var(--space-3xs);
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.panel-kicker-output {
  color: var(--accent-green);
}

.panel-index {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.remover-panel-title {
  margin: 0;
  color: var(--text-primary);
  font-size: var(--font-size-md);
}

.image-stage {
  position: relative;
  display: grid;
  min-height: 23rem;
  overflow: hidden;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  isolation: isolate;
}

.stage-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(230, 233, 236, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 233, 236, 0.035) 1px, transparent 1px);
  background-size: 2rem 2rem;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.85), transparent 88%);
}

.upload-dropzone {
  color: var(--text-secondary);
  cursor: pointer;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.upload-dropzone::before {
  position: absolute;
  inset: var(--space-sm);
  border: 1px dashed rgba(79, 157, 255, 0.35);
  border-radius: var(--radius-sm);
  content: "";
  pointer-events: none;
}

.upload-dropzone:focus-within {
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
}

.upload-dropzone:hover,
.upload-dropzone.is-dragging {
  border-color: var(--accent-blue);
  background-color: var(--bg-elevated-2);
}

.upload-dropzone.is-dragging {
  box-shadow: inset 0 0 0 1px var(--accent-blue), 0 0 0 4px rgba(79, 157, 255, 0.1);
}

.upload-empty-state,
.result-empty-state {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(100%, 18rem);
  justify-items: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  text-align: center;
}

.upload-icon,
.result-icon {
  display: grid;
  width: 3.5rem;
  height: 3.5rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
}

.upload-icon {
  color: var(--accent-blue);
}

.result-icon {
  color: var(--accent-green);
}

.upload-icon svg,
.result-icon svg {
  width: 1.6rem;
  height: 1.6rem;
}

.upload-action {
  color: var(--text-primary);
  font-size: var(--font-size-md);
  font-weight: 600;
}

.upload-hint,
.result-detail {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.upload-preview-wrap {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--bg);
}

.upload-preview {
  position: absolute;
  inset: var(--space-sm);
  display: block;
  width: calc(100% - 2 * var(--space-sm));
  height: calc(100% - 2 * var(--space-sm));
  object-fit: contain;
  object-position: center;
}

.visually-hidden-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.image-meta {
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.image-meta-label {
  flex-shrink: 0;
  color: var(--text-secondary);
}

.image-meta-value {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.image-meta-size {
  flex-shrink: 0;
  margin-left: auto;
}

.process-button,
.download-button {
  min-height: 2.75rem;
  padding: 0 var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-muted);
  font: inherit;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  cursor: not-allowed;
}

.process-button {
  width: 100%;
}

.process-button:not(:disabled),
.download-button:not(:disabled) {
  color: var(--text-primary);
  cursor: pointer;
}

.process-button:not(:disabled) {
  border-color: var(--accent-blue);
  background: rgba(78, 168, 255, 0.08);
}

.process-button:not(:disabled):hover,
.download-button:not(:disabled):hover {
  border-color: var(--accent-green);
  background: rgba(95, 216, 143, 0.08);
}

.upload-error {
  margin: 0;
  color: #ff9a9a;
  font-size: var(--font-size-sm);
}

.result-canvas {
  background-color: var(--bg);
  background-image:
    linear-gradient(45deg, rgba(230, 233, 236, 0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(230, 233, 236, 0.08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(230, 233, 236, 0.08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(230, 233, 236, 0.08) 75%);
  background-position: 0 0, 0 0.8rem, 0.8rem -0.8rem, -0.8rem 0;
  background-size: 1.6rem 1.6rem;
}

.result-empty-state {
  border: 1px solid rgba(95, 216, 143, 0.2);
  border-radius: var(--radius-md);
  background: rgba(11, 13, 16, 0.9);
}

.result-processing {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  text-align: center;
}

.result-processing[hidden],
.result-preview[hidden],
.result-empty-state[hidden] {
  display: none;
}

.result-spinner {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(95, 216, 143, 0.18);
  border-top-color: var(--accent-green);
  border-radius: 50%;
  animation: spin 0.85s linear infinite;
}

.result-processing-label {
  margin: 0;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.result-preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: transparent;
}

.result-placeholder {
  margin: 0;
  color: var(--text-primary);
  font-size: var(--font-size-md);
  font-weight: 600;
}

.result-detail {
  margin: 0;
}

.result-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.remover-status {
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--text-muted);
}

.remover-status .status-dot {
  background: var(--accent-green-dim);
}

@media (hover: hover) and (pointer: fine) {
  .upload-dropzone:hover {
    transform: translateY(-2px);
  }
}

@media (max-width: 56rem) {
  .remover-grid {
    grid-template-columns: 1fr;
  }

  .remover-panel-result {
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .image-stage {
    min-height: 19rem;
  }
}

@media (max-width: 40rem) {
  .remover-toolbar,
  .result-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .toolbar-note {
    text-align: left;
  }

  .remover-panel {
    padding: var(--space-md);
  }

  .download-button {
    width: 100%;
  }
}

@media (max-width: 30rem) {
  .image-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .image-meta-size {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .upload-dropzone,
  .result-spinner {
    transition: none;
    animation: none;
  }
}

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