/* ===== 共通ナビゲーション nav.css ===== */

.shared-drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 150;
}
.shared-drawer-overlay.open { display: block; }

.shared-drawer {
  position: fixed;
  top: 0;
  left: -280px;
  width: 260px;
  height: 100vh;
  background: #f8f8fa;
  border-right: 1px solid rgba(0,0,0,0.08);
  transition: left 0.25s ease;
  z-index: 200;
  padding: 1.5rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow-y: auto;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
}
.shared-drawer.open { left: 0; }

[data-theme="dark"] .shared-drawer,
[data-theme="auto"] .shared-drawer {
  background: #13151e;
  border-right-color: rgba(255,255,255,0.07);
}

@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .shared-drawer {
    background: #13151e;
    border-right-color: rgba(255,255,255,0.07);
  }
}

.shared-drawer h2 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #666;
  margin: 1rem 0 0.5rem 0;
  padding: 0 0.5rem;
}
.shared-drawer h2:first-child { margin-top: 0; }

[data-theme="dark"] .shared-drawer h2,
[data-theme="auto"] .shared-drawer h2 { color: #888; }

@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .shared-drawer h2 { color: #888; }
}

.shared-drawer a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.5rem;
  color: #1a1a2e;
  text-decoration: none;
  font-size: 0.9rem;
  border-radius: 6px;
  opacity: 0.85;
  transition: background 0.15s;
}
.shared-drawer a:hover { background: rgba(0,0,0,0.06); opacity: 1; }
.shared-drawer a.current { opacity: 1; font-weight: 600; }

[data-theme="dark"] .shared-drawer a,
[data-theme="auto"] .shared-drawer a { color: #e8e8f0; }
[data-theme="dark"] .shared-drawer a:hover,
[data-theme="auto"] .shared-drawer a:hover { background: rgba(255,255,255,0.06); }

@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .shared-drawer a { color: #e8e8f0; }
  [data-theme="auto"] .shared-drawer a:hover { background: rgba(255,255,255,0.06); }
}

.shared-drawer-divider {
  border-top: 1px solid rgba(0,0,0,0.08);
  margin: 0.75rem 0;
}

[data-theme="dark"] .shared-drawer-divider,
[data-theme="auto"] .shared-drawer-divider { border-top-color: rgba(255,255,255,0.08); }

@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .shared-drawer-divider { border-top-color: rgba(255,255,255,0.08); }
}

.shared-theme-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.5rem;
  color: #1a1a2e;
  background: none;
  border: none;
  font-size: 0.9rem;
  border-radius: 6px;
  opacity: 0.75;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: background 0.15s, opacity 0.15s;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans JP', sans-serif;
}
.shared-theme-btn:hover { background: rgba(0,0,0,0.06); opacity: 1; }
.shared-theme-btn.active { opacity: 1; font-weight: 600; }

[data-theme="dark"] .shared-theme-btn,
[data-theme="auto"] .shared-theme-btn { color: #e8e8f0; }
[data-theme="dark"] .shared-theme-btn:hover,
[data-theme="auto"] .shared-theme-btn:hover { background: rgba(255,255,255,0.06); }

@media (prefers-color-scheme: dark) {
  [data-theme="auto"] .shared-theme-btn { color: #e8e8f0; }
  [data-theme="auto"] .shared-theme-btn:hover { background: rgba(255,255,255,0.06); }
}