.preview-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  height: 40px; padding: 0 var(--spacing-lg);
  background: var(--bg-surface); border-bottom: var(--accent) dashed 3px;
  box-shadow: var(--shadow-md);
}
.preview-bar-left {
  display: flex; align-items: center; gap: var(--spacing-md);
}
.preview-bar-logo {
  font-size: var(--fs-sm); font-weight: 700; color: var(--accent);
}
.preview-bar-page {
  font-size: var(--fs-sm); color: var(--text-secondary);
}
.preview-bar-right {
  display: flex; align-items: center; gap: var(--spacing-sm);
}

.preview-breakpoints {
  display: flex; align-items: center; gap: 2px;
  background: var(--bg-surface-hover); border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2px;
}
.preview-bp-btn {
  padding: 4px 10px; border-radius: var(--radius-sm);
  font-size: var(--fs-xs); color: var(--text-secondary);
  cursor: pointer; transition: all var(--transition-fast);
}
.preview-bp-btn:hover { color: var(--text-dark); }
.preview-bp-btn.active {
  background: var(--accent); color: var(--text-on-accent); font-weight: 500;
}

.preview-viewport {
  margin-top: 40px; min-height: calc(100vh - 40px);
  display: flex; justify-content: center;
  background: #e8e8e8;
  padding: var(--spacing-xl) 0;
}
.preview-frame {
  width: 100%; max-width: 960px;
  background: var(--bg-canvas); min-height: 80vh;
  box-shadow: var(--shadow-lg);
  border: 1px solid lightgray;
  transition: max-width var(--transition-normal);
}
.preview-frame.tablet { max-width: 768px; }
.preview-frame.mobile { max-width: 375px; }

.preview-frame-inner { padding: 0; }

.preview-page-header {
  background: #2c3e50; color: #fff; padding: 24px 40px;
}
.preview-page-header nav {
  display: flex; align-items: center; justify-content: space-between;
}
.preview-page-header .site-title {
  font-size: 1.4rem; font-weight: 700;
}
.preview-page-header .nav-links {
  display: flex; gap: 24px;
}
.preview-page-header .nav-links a {
  color: rgba(255,255,255,0.8); font-size: 0.9rem; text-decoration: none;
}
.preview-page-header .nav-links a:hover { color: #fff; }

.preview-page-body { padding: 40px; color: #333; }
.preview-page-body h1 { font-size: 2rem; margin-bottom: 16px; color: #333; }
.preview-page-body p { font-size: 1rem; line-height: 1.7; margin-bottom: 16px; color: #555; }
.preview-page-body .hero-banner {
  background: linear-gradient(135deg, #89c489, #459745);
  color: #fff; padding: 60px 40px; border-radius: 4px;
  margin-bottom: 32px; text-align: center;
}
.preview-page-body .hero-banner h1 { color: #fff; font-size: 2.4rem; }
.preview-page-body .hero-banner p { color: rgba(255,255,255,0.85); }
.preview-page-body .content-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-bottom: 32px;
}
.preview-page-body .content-card {
  background: #f8f9fa; border-radius: 4px; padding: 24px;
  border: 1px solid var(--border);
}
.preview-page-body .content-card h3 { font-size: 1.1rem; margin-bottom: 8px; color: #333; }
.preview-page-body .content-card p { font-size: 0.9rem; color: #666; }

.preview-page-footer {
  background: #333; color: rgba(255,255,255,0.6); padding: 32px 40px;
  font-size: 0.85rem; text-align: center;
}