/* Navigation enhancements */
.nav-container {
    font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
    font-size: 11px;
    color: #333;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.nav-header {
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
    padding: 8px 10px;
    flex-shrink: 0;
}

.nav-header .module-title {
    font-size: 13px;
    font-weight: bold;
    color: #dd232a;
    margin-bottom: 6px;
}

.module-switcher {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-bottom: 8px;
}

.module-switcher a {
    display: inline-block;
    padding: 2px 6px;
    background: #e8e8e8;
    border: 1px solid #ccc;
    border-radius: 3px;
    color: #333;
    text-decoration: none;
    font-size: 10px;
    cursor: pointer;
}

.module-switcher a:hover {
    background: #d0d0d0;
    border-color: #999;
}

.module-switcher a.active {
    background: #0055a4;
    color: #fff;
    border-color: #0055a4;
}

.nav-search {
    margin-top: 4px;
}

.nav-search input[type="text"] {
    width: 100%;
    box-sizing: border-box;
    padding: 4px 8px;
    border: 1px solid #ccc;
    border-radius: 3px;
    font-size: 11px;
    font-family: inherit;
}

.nav-search input[type="text"]:focus {
    border-color: #0055a4;
    outline: none;
    box-shadow: 0 0 3px rgba(0,85,164,0.3);
}

.nav-breadcrumbs {
    background: #fafafa;
    border-bottom: 1px solid #eee;
    padding: 6px 10px;
    font-size: 10px;
    line-height: 1.6;
    flex-shrink: 0;
}

.nav-breadcrumbs a {
    color: #0055a4;
    text-decoration: none;
    padding: 1px 2px;
    border-radius: 2px;
}

.nav-breadcrumbs a:hover {
    background: #e8f0fe;
    text-decoration: underline;
}

.nav-breadcrumbs .sep {
    color: #bbb;
    margin: 0 2px;
}

.nav-breadcrumbs .current {
    color: #333;
    font-weight: bold;
    padding: 1px 2px;
}

.nav-tree-wrap {
    flex: 1;
    overflow-y: auto;
    padding: 5px 0;
}

.nav-tree-wrap .dtree a.node {
    padding: 2px 4px;
    display: block;
}

.nav-tree-wrap .dtree a.node:hover {
    background: #f0f0f0;
}

.nav-tree-wrap .dtree a.nodeSel {
    background: #c0d2ec;
    font-weight: bold;
}

.nav-tree-wrap .dtree .nav-hidden {
    display: none !important;
}

.no-results {
    padding: 15px 10px;
    color: #999;
    font-style: italic;
    text-align: center;
}

.nav-controls {
    padding: 4px 10px;
    font-size: 10px;
    color: #666;
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
}

.nav-controls a {
    color: #0055a4;
    text-decoration: none;
    cursor: pointer;
}

.nav-controls a:hover {
    text-decoration: underline;
}

.nav-controls .sep {
    color: #ccc;
    margin: 0 4px;
}