/* コンテナ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ボタン */
.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .2s;
}
.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-primary:hover { opacity: 0.85; }
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

/* セクション */
.section { padding: var(--space-2xl) 0; }
.bg-sub  { background: var(--color-bg-sub); }
.section-title { text-align: center; margin-bottom: var(--space-xl); }

/* =============================
   ヘッダー・ナビゲーション
   ============================= */
.site-header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    background: var(--color-bg);
    z-index: 200;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.site-logo { display: flex; align-items: center; margin-left: -5px; }
.site-logo img { display: block; }

/* ナビリスト */
.nav-list {
    display: flex;
    gap: var(--space-lg);
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav-list a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 14px;
    transition: color .2s;
}
.nav-list a:hover { color: var(--color-accent); }

/* ハンバーガーボタン（デスクトップでは非表示） */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
    z-index: 200;
}
.menu-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: transform .3s, opacity .3s;
}

/* ハンバーガー → ✕ アニメーション */
.menu-toggle.is-active .menu-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-active .menu-toggle-bar:nth-child(2) {
    opacity: 0;
}
.menu-toggle.is-active .menu-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================
   フッター
   ============================= */
.site-footer {
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-xl) 0 var(--space-lg);
}
.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}
.footer-brand { max-width: 360px; }
.footer-logo { filter: brightness(0) invert(1); margin-bottom: var(--space-sm); }
.footer-desc { font-size: 13px; color: rgba(255,255,255,0.6); line-height: 1.7; margin: 0; }
.footer-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    list-style: none;
    margin: 0;
    padding: 0;
}
.footer-nav-list a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color .2s;
}
.footer-nav-list a:hover { color: #fff; }
.copyright {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-md);
    margin: 0;
}

/* プランカード */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.plan-card {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    position: relative;
}
.plan-card--recommended { border-color: var(--color-accent); border-width: 2px; }
.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #fff;
    font-size: 12px;
    padding: 2px 12px;
    border-radius: 20px;
}
.plan-name  { font-size: 20px; margin-bottom: var(--space-sm); }
.plan-price { font-size: 32px; font-weight: 700; margin-bottom: var(--space-lg); }
.plan-price span { font-size: 14px; font-weight: 400; color: var(--color-text-muted); }
.plan-features { list-style: none; padding: 0; margin-bottom: var(--space-lg); }
.plan-features li::before { content: '\2713  '; color: var(--color-accent); }

/* ニュースアイテム */
.news-item {
    display: flex;
    gap: var(--space-lg);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}
.news-item time { color: var(--color-text-muted); font-size: 14px; white-space: nowrap; }
.news-item a { text-decoration: none; color: var(--color-text); }
.news-item a:hover { color: var(--color-accent); }
.news-new-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    background: #e74c3c;
    color: #fff;
    padding: 1px 6px;
    border-radius: 3px;
    line-height: 1.4;
    vertical-align: middle;
    flex-shrink: 0;
}

/* =============================
   レスポンシブ
   ============================= */
@media (max-width: 768px) {
    /* ハンバーガー表示 */
    .menu-toggle {
        display: flex;
    }

    /* モバイルナビ */
    .site-nav {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--color-bg);
        box-shadow: -4px 0 16px rgba(0,0,0,0.1);
        padding: 80px var(--space-lg) var(--space-lg);
        z-index: 150;
        overflow-y: auto;
    }
    .site-nav.is-open {
        display: block;
    }
    .nav-list {
        flex-direction: column;
        gap: 0;
    }
    .nav-list li {
        border-bottom: 1px solid var(--color-border);
    }
    .nav-list a {
        display: block;
        padding: var(--space-md) 0;
        font-size: 16px;
    }

    /* オーバーレイ（headerのz-index:200より低く設定） */
    .menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.4);
        z-index: 140;
    }
    .menu-overlay.is-visible {
        display: block;
    }

    /* フッター */
    .footer-inner {
        flex-direction: column;
        gap: var(--space-lg);
    }
    .footer-brand { max-width: 100%; }
    .footer-nav-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-md);
    }

    /* プランカード */
    .plan-grid { grid-template-columns: 1fr; }

    /* コンテナ */
    .container { padding: 0 var(--space-md); }
}

/* ===== プラグイン一覧フィルタチップ ===== */
.plugin-filter {
  display: flex; flex-wrap: wrap; gap: var(--space-sm);
  margin: var(--space-md) 0 var(--space-lg);
}
.plugin-filter-chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 6px 14px; border: 1px solid var(--color-border, #d1d5db); border-radius: 999px;
  font-size: 0.9rem; color: var(--color-text, #1f2937); background: #fff;
  text-decoration: none; transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.plugin-filter-chip:hover { background: #f3f4f6; border-color: #9ca3af; }
.plugin-filter-chip.is-active {
  background: var(--color-accent, #2563eb); border-color: var(--color-accent, #2563eb); color: #fff;
}
.plugin-filter-chip.is-active:hover { opacity: 0.9; }
.plugin-filter-count { font-size: 0.8em; opacity: 0.7; }
.plugin-filter-chip.is-active .plugin-filter-count { opacity: 0.85; }
.plugin-filter-description {
  color: var(--color-text-muted, #6b7280); margin-bottom: var(--space-lg);
  padding: var(--space-sm) var(--space-md); background: #f9fafb; border-left: 3px solid var(--color-accent, #2563eb);
  border-radius: 4px; font-size: 0.9rem;
}
.plugin-empty { color: var(--color-text-muted, #6b7280); padding: var(--space-xl); text-align: center; }

/* ===== 関連プラグイン ===== */
.plugin-related-section { margin-top: var(--space-xl); }
.plugin-related-group { margin-top: var(--space-lg); }
.plugin-related-heading {
  display: flex; align-items: baseline; gap: var(--space-sm);
  font-size: 1.05rem; margin-bottom: var(--space-md);
  padding-left: var(--space-sm); border-left: 4px solid var(--color-border, #ddd);
}
.plugin-related-group--required    .plugin-related-heading { border-left-color: #dc2626; }
.plugin-related-group--extension   .plugin-related-heading { border-left-color: #7c3aed; }
.plugin-related-group--recommended .plugin-related-heading { border-left-color: #2563eb; }
.plugin-related-group--alternative .plugin-related-heading { border-left-color: #6b7280; }
.plugin-related-group--related     .plugin-related-heading { border-left-color: #94a3b8; }
.plugin-related-icon { font-size: 1.1rem; }
.plugin-related-note { font-weight: normal; color: var(--color-text-muted); font-size: 0.85rem; margin-left: var(--space-sm); }