.tools-nav-btn { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; background: var(--card-bg, #1a1a2e); color: var(--text-secondary, #8888a0); border: 1px solid var(--panel-border, #2a2a44); border-radius: 10px; font-family: inherit; font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.15s; }
.tools-nav-btn:hover { color: var(--text-primary, #e0e0f0); border-color: var(--accent-primary, #6366f1); }
.tools-nav-btn kbd { display: inline-flex; align-items: center; padding: 2px 6px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 4px; font-family: var(--font-mono, monospace); font-size: 11px; font-weight: 600; color: var(--text-muted, #6a6a90); }

.tools-nav-modal { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: flex-start; justify-content: center; padding: 80px 20px 20px; z-index: 300; backdrop-filter: blur(8px); }
.tools-nav-modal[hidden] { display: none; }
.tools-nav-modal-inner { width: 100%; max-width: 600px; background: var(--card-dark-bg, #0f0f1a); border: 1px solid var(--panel-border, #2a2a44); border-radius: 18px; box-shadow: 0 24px 80px rgba(0,0,0,0.7); overflow: hidden; }
.tools-nav-search { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--panel-border); }
.tools-nav-search-icon { font-size: 20px; color: var(--text-muted, #6a6a90); }
.tools-nav-search input { flex: 1; background: transparent; border: none; color: var(--text-primary, #e0e0f0); font-family: inherit; font-size: 16px; outline: none; }
.tools-nav-search input::placeholder { color: var(--text-muted, #6a6a90); }
.tools-nav-search kbd { padding: 3px 8px; background: var(--panel-bg, #1a1a2e); border: 1px solid var(--panel-border); border-radius: 5px; font-family: var(--font-mono, monospace); font-size: 11px; font-weight: 600; color: var(--text-muted); }

.tools-nav-list { max-height: 440px; overflow-y: auto; padding: 8px; }
.tools-nav-empty { padding: 32px 20px; text-align: center; color: var(--text-muted); font-size: 14px; }
.tools-nav-item { display: flex; align-items: center; gap: 14px; padding: 12px 14px; border-radius: 10px; color: var(--text-primary, #e0e0f0); text-decoration: none; transition: background 0.1s; }
.tools-nav-item:hover, .tools-nav-item.active { background: var(--panel-bg, #1a1a2e); }
.tools-nav-item.current .tools-nav-title { color: var(--accent-primary, #6366f1); }
.tools-nav-icon { font-size: 22px; flex-shrink: 0; width: 32px; text-align: center; }
.tools-nav-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; flex: 1; }
.tools-nav-title { font-weight: 600; font-size: 14px; color: var(--text-primary, #e0e0f0); }
.tools-nav-desc { font-size: 12px; color: var(--text-muted, #6a6a90); line-height: 1.4; }
.tools-nav-arrow { color: var(--text-muted); font-size: 14px; opacity: 0; transition: opacity 0.1s; }
.tools-nav-item.active .tools-nav-arrow, .tools-nav-item:hover .tools-nav-arrow { opacity: 1; }

.tools-nav-footer { display: flex; align-items: center; gap: 16px; padding: 12px 20px; border-top: 1px solid var(--panel-border); font-size: 12px; color: var(--text-muted); }
.tools-nav-footer kbd { padding: 2px 6px; background: var(--panel-bg); border: 1px solid var(--panel-border); border-radius: 4px; font-family: var(--font-mono, monospace); font-size: 10px; font-weight: 600; color: var(--text-secondary); margin-right: 2px; }
.tools-nav-footer a { margin-left: auto; color: var(--accent-primary, #6366f1); text-decoration: none; }
.tools-nav-footer a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .tools-nav-btn span { display: none; }
  .tools-nav-modal { padding: 60px 12px 12px; }
}