/* === Tool Header === */
.tool-header {
  margin-bottom: 20px;
}
.tool-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}
.tool-desc {
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 4px;
}

/* === Action Bar === */
.action-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.action-btn {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s;
}
.action-btn:hover {
  border-color: var(--border-hover);
}

/* === Panels === */
.panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.panel {
  display: flex;
  flex-direction: column;
}
.panel-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.panel-textarea {
  flex: 1;
  min-height: 200px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
}
.panel-textarea:focus {
  outline: none;
  border-color: var(--border-hover);
}
.panel-textarea.output {
  color: var(--accent);
}
.panel-textarea.error {
  color: var(--error);
}

/* === Custom Output (JSON formatter etc.) === */
.panel-output {
  flex: 1;
  min-height: 200px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  overflow: auto;
  white-space: pre-wrap;
}

/* === Common Buttons === */
.common-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
}
.common-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.common-btn:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

/* === Ad Slot === */
.ad-slot {
  margin: 24px 0;
}

/* === SEO Footer === */
.tool-info {
  color: var(--text-dim);
  font-size: 12px;
  line-height: 1.6;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

/* === SEO Content === */
.tool-info h2 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}
.tool-info p {
  margin-bottom: 12px;
}
.faq {
  margin-top: 24px;
}
.faq-item {
  margin-bottom: 16px;
}
.faq-q {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
}
.faq-a {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.6;
}

/* === Responsive === */
@media (max-width: 768px) {
  .panels {
    grid-template-columns: 1fr;
  }
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}