/* PBM shell — modern tokens + glass chrome */

:root {
  --pbm-bg: #f4f6fb;
  --pbm-surface: #ffffff;
  --pbm-text: #0f172a;
  --pbm-muted: #64748b;
  --pbm-primary: #6366f1;
  --pbm-primary-hover: #4f46e5;
  --pbm-primary-soft: #eef2ff;
  --pbm-banner: #2563eb;
  --pbm-banner-soft: #dbeafe;
  --pbm-border: rgba(15, 23, 42, 0.08);
  --pbm-radius: 16px;
  --pbm-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
  --pbm-shadow-md: 0 12px 40px rgba(15, 23, 42, 0.08);
  --pbm-font: "Inter", "Segoe UI", "Noto Sans TC", "PingFang TC",
    -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(99, 102, 241, 0.14), transparent 55%),
    radial-gradient(900px 500px at 100% 0%, rgba(139, 92, 246, 0.1), transparent 50%),
    var(--pbm-bg);
  color: var(--pbm-text);
  font-family: var(--pbm-font);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--pbm-primary); text-decoration: none; }
a:hover { color: var(--pbm-primary-hover); }

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: #f3f4f6;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

/* Header */
.pbm-header {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--pbm-border);
  padding: 14px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.pbm-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.pbm-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--pbm-primary), #8b5cf6);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.pbm-brand h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 650;
}

.pbm-tagline {
  margin: 2px 0 0;
  color: var(--pbm-muted);
  font-size: 0.85rem;
}

.pbm-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.pbm-nav a {
  color: var(--pbm-muted);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.pbm-nav a:hover {
  background: var(--pbm-primary-soft);
  color: var(--pbm-primary);
}

.pbm-nav a.active {
  background: var(--pbm-primary-soft);
  color: var(--pbm-primary);
  font-weight: 600;
}

/* Main */
.pbm-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 36px 24px 64px;
}

.pbm-hero h2 {
  margin: 0 0 8px;
  font-size: 1.5rem;
}

.pbm-hero p {
  margin: 0 0 28px;
  color: var(--pbm-muted);
  max-width: 42em;
}

.pbm-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-bottom: 36px;
}

.pbm-card {
  display: block;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--pbm-border);
  border-radius: var(--pbm-radius);
  padding: 22px 22px 18px;
  box-shadow: var(--pbm-shadow);
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.pbm-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--pbm-shadow-md);
  border-color: rgba(99, 102, 241, 0.35);
  color: inherit;
}

.pbm-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.pbm-card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.pbm-badge {
  font-size: 0.72rem;
  color: var(--pbm-muted);
  background: #f3f4f6;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.pbm-card p {
  margin: 0 0 16px;
  color: var(--pbm-muted);
  font-size: 0.95rem;
}

.pbm-card-cta {
  font-weight: 600;
  color: var(--pbm-primary);
  font-size: 0.92rem;
}

.pbm-card-banner .pbm-card-cta { color: var(--pbm-banner); }
.pbm-card-banner:hover { border-color: #a5d6ff; }

.pbm-note {
  background: var(--pbm-surface);
  border: 1px solid var(--pbm-border);
  border-radius: var(--pbm-radius);
  padding: 18px 22px;
}

.pbm-note h3 {
  margin: 0 0 10px;
  font-size: 0.95rem;
}

.pbm-note ul {
  margin: 0;
  padding-left: 1.2em;
  color: var(--pbm-muted);
  font-size: 0.9rem;
}

.pbm-note li { margin-bottom: 4px; }

.pbm-footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 40px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--pbm-muted);
  font-size: 0.85rem;
}

/* Phase 2 — sections / table / tools */
.pbm-section {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--pbm-border);
  border-radius: var(--pbm-radius);
  padding: 18px 22px;
  margin-bottom: 24px;
  box-shadow: var(--pbm-shadow);
}

.pbm-section h2 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.pbm-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
}

.pbm-section-head h2 { margin: 0; }

.pbm-muted { color: var(--pbm-muted); font-size: 0.9rem; margin: 0 0 12px; }
.pbm-error { color: #b91c1c; }

.pbm-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--pbm-border);
  background: #fff;
  color: var(--pbm-text);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}

.pbm-btn:hover {
  border-color: #c7d2fe;
  color: var(--pbm-primary);
}

.pbm-btn-primary {
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.28);
}

.pbm-btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5, #4338ca);
  border-color: transparent;
  color: #fff;
}

.pbm-inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.pbm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.pbm-table th,
.pbm-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--pbm-border);
  vertical-align: top;
}

.pbm-table th {
  color: var(--pbm-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pbm-chip {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  margin-right: 4px;
  background: #f3f4f6;
  color: var(--pbm-muted);
}

.pbm-chip-popup {
  background: var(--pbm-primary-soft);
  color: var(--pbm-primary);
}

.pbm-chip-banner {
  background: var(--pbm-banner-soft);
  color: var(--pbm-banner);
}

.pbm-list, .pbm-ol {
  margin: 0 0 14px;
  padding-left: 1.2em;
  color: var(--pbm-muted);
  font-size: 0.9rem;
}

.pbm-list li, .pbm-ol li { margin-bottom: 4px; }

.pbm-card .pbm-list { margin-top: 0; }

/* Two-layer preview blocks on home */
.pbm-preview-layers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 8px;
}

.pbm-layer {
  background: #fafafa;
  border: 1px solid var(--pbm-border);
  border-radius: 10px;
  padding: 14px 16px 16px;
}

.pbm-layer h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pbm-layer .pbm-list { margin-bottom: 12px; }