.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 52px;
  background: var(--c-header-bg);
  border-bottom: 1px solid var(--c-header-border);
  display: flex;
  align-items: center;
}

.header-inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
}

.logo-icon {
  flex-shrink: 0;
}

.logo-name {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-header-text);
  letter-spacing: -0.01em;
}

.logo-version {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--c-header-text-2);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
}

.page-wrapper {
  max-width: 1280px;
  margin: 0 auto;
  padding: 24px 24px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.compat-warning {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--c-warning-subtle);
  border: 1px solid var(--c-warning-border);
  border-radius: var(--r-lg);
  color: var(--c-warning);
  font-size: 13px;
  font-weight: 500;
}

.workspace {
  display: grid;
  grid-template-columns: 42% 1fr;
  gap: 20px;
  align-items: start;
}

.panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--c-border);
}

.panel-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--c-text);
  letter-spacing: 0.01em;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-text-2);
}

.settings-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.action-bar {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-sm);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.output-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.output-content {
  padding: 20px;
}

@media (max-width: 960px) {
  .workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page-wrapper {
    padding: 16px 16px 40px;
  }
  .header-inner {
    padding: 0 16px;
  }
}