/* ── Tool Page Layout ────────────────────────── */
.tool-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

.tool-header {
  text-align: center;
  margin-bottom: 32px;
}

.tool-header h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text-heading);
  margin-bottom: 8px;
}

.tool-header p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── File List ──────────────────────────────── */
.file-list {
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.file-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all 200ms;
}

.file-item.dragging {
  opacity: 0.5;
  border-style: dashed;
}

.file-item.drag-over-item {
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59,130,246,0.15);
}

.file-item-drag {
  cursor: grab;
  color: var(--color-text-muted);
  display: flex;
  padding: 4px;
}

.file-item-drag:active { cursor: grabbing; }

.file-item-thumb {
  width: 40px;
  height: 52px;
  background: var(--color-bg);
  border-radius: 4px;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-item-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.file-item-thumb svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-text-muted);
}

.file-item-info {
  flex: 1;
  min-width: 0;
}

.file-item-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-item-meta {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.file-item-remove {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: flex;
  transition: all 200ms;
}

.file-item-remove:hover {
  background: var(--color-error-light);
  color: var(--color-error);
}

/* ── Options Panel ──────────────────────────── */
.options-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 20px 0;
}

.option-group {
  margin-bottom: 20px;
}

.option-group:last-child { margin-bottom: 0; }

.option-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.option-group input[type="text"],
.option-group input[type="number"],
.option-group input[type="password"],
.option-group textarea,
.option-group select {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color 200ms;
}

.option-group input:focus,
.option-group select:focus,
.option-group textarea:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
}

.option-group input[type="range"] {
  width: 100%;
  accent-color: var(--color-brand);
}

.option-group .range-value {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.option-group .checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text);
}

.option-group .checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-brand);
}

.option-group input[type="color"] {
  width: 60px;
  height: 40px;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--color-surface);
}

/* ── Add More Files ────────────────────────── */
.upload-add-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand);
  cursor: pointer;
  padding: 10px 0;
  transition: opacity 200ms;
}

.upload-add-more:hover {
  opacity: 0.7;
}

/* ── Action Button ──────────────────────────── */
.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: var(--color-brand);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 200ms;
  margin-top: 24px;
}

.action-btn:hover { background: var(--color-brand-dark); }
.action-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.action-btn .spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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