/* Injected chrome on /popup/* and /banner/* — modern sticky shell nav */

:root {
  --pbm-primary: #6366f1;
  --pbm-primary-hover: #4f46e5;
  --pbm-primary-soft: #eef2ff;
  --pbm-banner: #2563eb;
  --pbm-text: #0f172a;
  --pbm-muted: #64748b;
  --pbm-border: rgba(15, 23, 42, 0.08);
  --pbm-font: "Inter", "Segoe UI", "Noto Sans TC", "PingFang TC",
    -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
}

/* Push page content below fixed chrome */
body {
  padding-top: 56px !important;
  font-family: var(--pbm-font);
}

.pbm-chrome {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99990;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--pbm-border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 8px 24px rgba(15, 23, 42, 0.04);
}

.pbm-chrome-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.pbm-chrome-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
  color: var(--pbm-text) !important;
  margin-right: 8px;
  flex-shrink: 0;
}

.pbm-chrome-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 55%, #a78bfa 100%);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.pbm-chrome-title {
  font-size: 0.92rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.pbm-chrome-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  min-width: 0;
}

.pbm-chrome-links a {
  color: var(--pbm-muted) !important;
  text-decoration: none !important;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 999px;
  transition: background 0.15s ease, color 0.15s ease;
}

.pbm-chrome-links a:hover {
  background: var(--pbm-primary-soft);
  color: var(--pbm-primary) !important;
}

.pbm-chrome-links a.is-active {
  background: var(--pbm-primary-soft);
  color: var(--pbm-primary) !important;
  font-weight: 600;
}

.pbm-chrome-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

.pbm-chrome-pill {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--pbm-primary);
  background: var(--pbm-primary-soft);
  border: 1px solid rgba(99, 102, 241, 0.15);
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

.pbm-chrome-home {
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff !important;
  text-decoration: none !important;
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  padding: 8px 14px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.pbm-chrome-home:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.4);
  color: #fff !important;
}

@media (max-width: 720px) {
  body { padding-top: 96px !important; }
  .pbm-chrome-title { display: none; }
  .pbm-chrome-pill { display: none; }
  .pbm-chrome-inner { padding: 8px 12px; }
  .pbm-chrome-links { width: 100%; order: 3; }
}

/* Soften legacy page chrome under the shell */
body > .container > .header,
body main[data-page] > header {
  border-radius: 0 0 12px 12px;
}