/* ================================================================
   icongenerators.net – 共通ナビゲーション
   ================================================================ */
:root {
  --nav-h: 40px;
  /* カラー変数（各ページの CSS でも定義するが、nav 単独読み込み時の保険） */
  --orange:      #E8740A;
  --orange-dark: #C55E00;
  --orange-bg:   #F59030;
  --brown-dark:  #7A4E10;
  --panel-bg:    #C07818;
  --border:      #9A6010;
  --text-light:  #FFF5E0;
  --radius:      10px;
}

#site-nav {
  background: var(--brown-dark);
  border-bottom: 2px solid var(--border);
  padding: 0 14px;
  display: flex;
  align-items: center;
  height: var(--nav-h);
  gap: 4px;
  position: sticky;
  top: 0;
  z-index: 100;
}

#site-nav-logo {
  font-weight: bold;
  font-size: 0.85rem;
  color: var(--text-light);
  text-decoration: none;
  flex: 1;
  white-space: nowrap;
  opacity: 0.85;
  letter-spacing: 0.02em;
  transition: opacity 0.15s;
}
#site-nav-logo:hover { opacity: 1; }

.site-nav-links {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.site-nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.78rem;
  padding: 5px 9px;
  border-radius: 5px;
  opacity: 0.75;
  white-space: nowrap;
  transition: background 0.15s, opacity 0.15s;
}
.site-nav-link:hover {
  background: rgba(255,255,255,0.15);
  opacity: 1;
}
.site-nav-link[aria-current="page"] {
  background: rgba(255,255,255,0.18);
  opacity: 1;
  font-weight: bold;
}

.site-nav-lang {
  margin-left: 6px;
  flex-shrink: 0;
}
.nav-lang-link {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.7rem;
  font-weight: bold;
  padding: 3px 8px;
  border: 1px solid rgba(255,245,224,0.45);
  border-radius: 4px;
  opacity: 0.8;
  letter-spacing: 0.05em;
  transition: opacity 0.15s, background 0.15s;
}
.nav-lang-link:hover { opacity: 1; background: rgba(255,255,255,0.15); }

@media (max-width: 400px) {
  #site-nav-logo { font-size: 0.75rem; }
  .site-nav-link { font-size: 0.7rem; padding: 5px 6px; }
}

/* ── ハンバーガーボタン（デスクトップでは非表示）────────────── */
#nav-hamburger {
  display: none;
  background: none;
  border: 1px solid rgba(255,245,224,0.45);
  color: var(--text-light);
  border-radius: 4px;
  padding: 3px 9px;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: 2px;
  font-family: inherit;
  transition: background 0.15s;
}
#nav-hamburger:hover { background: rgba(255,255,255,0.15); }

/* ── スマホ：ハンバーガーメニュー ───────────────────────────── */
@media (max-width: 480px) {
  #nav-hamburger { display: block; }

  /* リンク一覧は固定ドロップダウンとして隠す */
  .site-nav-links {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    z-index: 200;
    background: var(--brown-dark);
    border-bottom: 2px solid var(--border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.35);
    flex-direction: column;
    gap: 0;
    padding: 4px 0 8px;
  }
  .site-nav-links.nav-open { display: flex; }

  /* ドロップダウン内のリンクは縦並び */
  .site-nav-link {
    padding: 11px 20px;
    font-size: 0.88rem;
    border-radius: 0;
    opacity: 0.85;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .site-nav-link:last-child { border-bottom: none; }
}