/* L2D Azure AI Theme - Nav Bar Styles */
/* Sidebar styles */
.sidebar {
    width: 280px;
    background-color: var(--card-bg);
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
    position: fixed;
    height: 100%;
    overflow-y: auto;
    transition: transform 0.3s ease-in-out;
    z-index: 1000;
}

.sidebar.collapsed {
    transform: translateX(-280px);
}

.sidebar-header {
    padding: 10px 10px;
    background-color: var(--third);
    color: var(--background);
    text-align: center;
}

.sidebar-toggle {
    position: fixed;
    top: 50%;
    left: 280px;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    background-color: var(--third-dark);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1001;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    transition: left 0.3s ease-in-out, transform 0.3s ease-in-out;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.sidebar-toggle.collapsed {
    left: 15px;
    transform: translate(0, -50%);
}

.sidebar-logo {
    width: 140px;
    margin-bottom: 15px;
}

.sidebar-header h2 {
    margin-top: 0;
    margin-bottom: 0;
}

.sidebar h3 {
    color: var(--text-secondary);
    margin: 20px 0 15px 20px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.sidebar li {
    margin-bottom: 2px;
}

.sidebar a {
    color: var(--text-secondary);
    text-decoration: none;
    display: block;
    padding: 12px 20px;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.sidebar a:hover {
    background-color: rgba(0, 120, 212, 0.05);
    color: var(--secondary-dark);
}

.sidebar a.active {
    background-color: rgba(0, 120, 212, 0.1);
    border-left: 3px solid var(--secondary-dark);
    color: var(--secondary);
    font-weight: 600;
}

/* Nested navigation styles */

.nav-toggle {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.nav-toggle:hover {
    background-color: rgba(0, 120, 212, 0.05);
    color: var(--secondary-dark);
}

.nav-toggle.active {
    background-color: rgba(0, 120, 212, 0.1);
    border-left: 3px solid var(--secondary);
    color: var(--secondary);
    font-weight: 600;
}

.toggle-icon {
    font-size: 12px;
    transition: transform 0.3s;
}

.nav-toggle.expanded .toggle-icon {
    transform: rotate(90deg);
}

.nested-nav {
    margin-left: 15px;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease-out;
}

.nested-nav.expanded {
    max-height: 500px;
}

.nested-nav li a {
    padding: 10px 20px 10px 30px;
    font-size: 0.95em;
}

/* Collapsible sections */
.collapsible-header {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s;
}

.collapsible-header:hover {
    color: var(--secondary);
}

.collapse-icon {
    font-size: 12px;
    transition: transform 0.3s;
}

.collapsed .collapse-icon {
    transform: rotate(-90deg);
}

.collapsible-content {
    max-height: 500px;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.collapsible-content.collapsed {
    max-height: 0;
}