/**
 * StackPrompt - プロンプトガイド（左カテゴリ + 右コンテンツ）
 */
.prompt-guide-page {
  --ide-bg: #0d1117;
  --ide-panel: #161b22;
  --ide-border: #30363d;
  --ide-text: #e6edf3;
  --ide-muted: #8b949e;
  --ide-accent: #58a6ff;
  --ide-radius: 6px;
  min-height: 100vh;
  background: var(--ide-bg);
  color: var(--ide-text);
  font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  padding: 1rem;
}

.prompt-guide-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.prompt-guide-page h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.5rem;
}

.prompt-guide-desc {
  color: var(--ide-muted);
  font-size: 0.9rem;
  margin: 0 0 1rem 0;
}

/* 2カラム: 左ナビ + 右コンテンツ */
.pg-layout {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  min-height: 400px;
}

.pg-nav {
  flex-shrink: 0;
  width: 220px;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.pg-nav-item {
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  text-align: left;
  background: var(--ide-panel);
  border: 1px solid var(--ide-border);
  border-radius: var(--ide-radius);
  color: var(--ide-text);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.pg-nav-item:hover {
  background: #21262d;
  border-color: var(--ide-muted);
}

.pg-nav-item.active {
  background: rgba(88, 166, 255, 0.15);
  border-color: var(--ide-accent);
  color: var(--ide-accent);
  font-weight: 600;
}

.pg-content {
  flex: 1;
  min-width: 0;
  background: var(--ide-panel);
  border: 1px solid var(--ide-border);
  border-radius: var(--ide-radius);
  padding: 1.25rem 1.5rem;
  overflow-y: auto;
}

.pg-panel {
  display: none;
}

.pg-panel.active {
  display: block;
}

.pg-panel-title {
  margin: 0 0 1rem 0;
  font-size: 1.15rem;
  font-weight: 600;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--ide-border);
}

.pg-panel p {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.pg-subtitle {
  font-weight: 600;
  color: var(--ide-text);
  margin: 1rem 0 0.4rem 0;
  font-size: 0.95rem;
}

.pg-subtitle:first-child { margin-top: 0; }

.pg-example, .pg-ng, .pg-ok {
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--ide-radius);
  padding: 0.6rem 0.8rem;
  font-size: 0.85rem;
  font-family: ui-monospace, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0.4rem 0 0.75rem 0;
  border-left: 3px solid var(--ide-border);
}

.pg-ok { border-left-color: var(--ide-accent); }
.pg-ng { border-left-color: #f85149; }

.pg-list {
  margin: 0.4rem 0 0.75rem 0;
  padding-left: 1.25rem;
}

.pg-list li { margin-bottom: 0.25rem; }

.pg-copy-wrap {
  margin-top: 1rem;
}

.pg-copy-btn {
  padding: 0.4rem 0.85rem;
  font-size: 0.85rem;
  border-radius: var(--ide-radius);
  border: 1px solid var(--ide-border);
  background: transparent;
  color: var(--ide-accent);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, border-color 0.2s;
}

.pg-copy-btn:hover {
  background: rgba(88, 166, 255, 0.15);
  border-color: var(--ide-accent);
}

.pg-copy-btn.copied {
  color: var(--ide-muted);
  border-color: var(--ide-muted);
}

/* スマホ: 縦積み */
@media (max-width: 640px) {
  .prompt-guide-page { padding: 0.75rem; }
  .pg-layout {
    flex-direction: column;
    min-height: 0;
  }
  .pg-nav {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
  }
  .pg-nav-item {
    flex: 1 1 auto;
    min-width: 0;
    padding: 0.5rem 0.6rem;
    font-size: 0.8rem;
  }
  .pg-content {
    padding: 1rem;
  }
  .pg-panel-title { font-size: 1.05rem; }
  .pg-example, .pg-ng, .pg-ok { font-size: 0.8rem; padding: 0.5rem 0.6rem; }
  .pg-feature-grid { grid-template-columns: 1fr; }
  .pg-hero { padding: 1.1rem; }
  .pg-hero-title { font-size: 1.35rem; }
}

/* ===== LP（できること・StackBook）パネル ===== */
.pg-hero {
  background: linear-gradient(135deg, rgba(88,166,255,0.14), rgba(88,166,255,0.03));
  border: 1px solid var(--ide-border);
  border-radius: calc(var(--ide-radius) + 4px);
  padding: 1.6rem 1.8rem;
  margin-bottom: 1.4rem;
}
.pg-hero-badge {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--ide-accent);
  background: rgba(88,166,255,0.12);
  border: 1px solid rgba(88,166,255,0.35);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  margin-bottom: 0.7rem;
}
.pg-hero-title {
  font-size: 1.7rem;
  font-weight: 700;
  margin: 0 0 0.6rem 0;
  color: var(--ide-text);
}
.pg-hero-lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ide-text);
  margin: 0 0 0.9rem 0;
}
.pg-hero-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.pg-hero-points li {
  font-size: 0.92rem;
  color: var(--ide-muted);
  line-height: 1.5;
}
.pg-hero-points strong { color: var(--ide-text); }

/* 機能カードのグリッド */
.pg-feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.8rem;
  margin: 0.5rem 0 1.6rem 0;
}
.pg-feature-card {
  background: var(--ide-panel);
  border: 1px solid var(--ide-border);
  border-radius: var(--ide-radius);
  padding: 1rem 1rem 0.9rem 1rem;
  transition: border-color 0.2s, transform 0.12s;
}
.pg-feature-card:hover {
  border-color: var(--ide-accent);
  transform: translateY(-2px);
}
.pg-feature-card--accent {
  border-color: rgba(88,166,255,0.55);
  background: linear-gradient(135deg, rgba(88,166,255,0.1), var(--ide-panel));
}
.pg-feature-ico { font-size: 1.6rem; line-height: 1; margin-bottom: 0.5rem; }
.pg-feature-name {
  font-weight: 700;
  font-size: 1rem;
  color: var(--ide-text);
  margin-bottom: 0.35rem;
}
.pg-feature-card p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--ide-muted);
}

/* StackBook スポットライト */
.pg-spotlight {
  border: 1px solid rgba(88,166,255,0.45);
  border-radius: calc(var(--ide-radius) + 2px);
  background: rgba(88,166,255,0.05);
  padding: 1.3rem 1.5rem;
  margin: 1rem 0 0.5rem 0;
}
.pg-spotlight-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ide-text);
  margin: 0 0 0.5rem 0;
}
.pg-spotlight-lead {
  font-size: 0.96rem;
  line-height: 1.7;
  margin: 0 0 0.3rem 0;
}
.pg-chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.3rem; }
.pg-chip {
  display: inline-block;
  background: rgba(88,166,255,0.12);
  border: 1px solid rgba(88,166,255,0.35);
  color: var(--ide-text);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.9rem;
  font-weight: 600;
}
.pg-steps {
  margin: 0.2rem 0 0.6rem 0;
  padding-left: 1.3rem;
}
.pg-steps li {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--ide-text);
  margin-bottom: 0.4rem;
}
.pg-steps strong { color: var(--ide-accent); }
.pg-code {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--ide-border);
  border-radius: 4px;
  padding: 0.1rem 0.4rem;
  font-size: 0.86rem;
  color: var(--ide-text);
}
.pg-note {
  font-size: 0.84rem;
  color: var(--ide-muted);
  line-height: 1.55;
  margin-top: 0.4rem;
}