:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --bg-tertiary: #1e1e1e;
  --text-primary: #e0e0e0;
  --text-secondary: #888;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #2a2a2a;
  --border-light: #3a3a3a;
  --success: #22c55e;
  --error: #ef4444;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Flex/grid display rules below would otherwise override the hidden attribute. */
[hidden] {
  display: none !important;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.app {
  width: 100%;
  max-width: 560px;
}

.header {
  text-align: center;
  margin-bottom: 24px;
}

.header h1 {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 6px;
}

.panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border-light);
  border-radius: 10px;
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.dropzone:hover,
.dropzone:focus-visible,
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--bg-tertiary);
  outline: none;
}

.dropzone-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--accent);
  font-size: 24px;
  line-height: 44px;
}

.dropzone-text strong {
  display: block;
  font-size: 15px;
}

.dropzone-text span {
  color: var(--text-secondary);
  font-size: 13px;
}

/* File list */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
}

.file-row-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-row-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-row-size {
  color: var(--text-secondary);
  font-size: 13px;
  flex-shrink: 0;
}

.file-row-remove {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
  flex-shrink: 0;
}

.file-row-remove:hover {
  color: var(--text-primary);
}

.file-row-progress {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-row-progress .progress-track {
  flex: 1;
}

.file-row-status {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 60px;
  text-align: right;
  flex-shrink: 0;
}

.file-row-download {
  display: block;
  text-align: center;
  background: var(--success);
  color: #04210f;
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.file-row-download:hover {
  filter: brightness(1.08);
}

.file-row-error {
  font-size: 13px;
  color: var(--error);
}

/* Noise control */
.control {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control label {
  font-size: 14px;
  color: var(--text-secondary);
}

.control output {
  color: var(--text-primary);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

input[type='range'] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Buttons */
.primary-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.primary-btn:hover:not(:disabled) {
  background: var(--accent-hover);
}

.primary-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.link-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
}

.link-btn:hover {
  color: var(--text-primary);
}

/* Progress */
.status {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-track {
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 0.25s;
}

.status-text {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}

/* Result */
.result {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.download-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--success);
  color: #04210f;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.download-btn:hover {
  filter: brightness(1.08);
}

.download-btn.is-disabled {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--error);
  color: #fca5a5;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
}

/* Metadata report */
.metadata-report {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
}

.metadata-report-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.metadata-verdict {
  font-size: 14px;
  font-weight: 600;
}

.metadata-verdict.is-ai-indicators { color: var(--error); }
.metadata-verdict.is-suspect { color: #f59e0b; }
.metadata-verdict.is-clean { color: var(--success); }
.metadata-verdict.is-error { color: var(--text-secondary); }

.metadata-c2pa {
  font-size: 13px;
  color: var(--text-secondary);
}

.metadata-indicators {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metadata-indicators li {
  font-size: 13px;
  color: var(--text-primary);
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.metadata-badge {
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.metadata-badge.is-strong { background: rgba(239, 68, 68, 0.18); color: var(--error); }
.metadata-badge.is-weak { background: rgba(245, 158, 11, 0.18); color: #f59e0b; }
.metadata-badge.is-info { background: rgba(59, 130, 246, 0.18); color: var(--accent); }

.metadata-note {
  font-size: 12px;
  color: var(--text-secondary);
}