/* Modern Left Navigation */
.side-dropdown-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 320px;
    height: 100vh;
    background: linear-gradient(180deg, var(--white), #f8f9fa);
    box-shadow: 4px 0 15px rgba(0,0,0,0.1);
    padding: 0;
    z-index: 1001;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.side-dropdown-menu.active {
    transform: translateX(0);
}

.side-dropdown-menu .close-menu {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border: 1px solid rgba(0,0,0,0.1);
}

.side-dropdown-menu .close-menu:hover {
    background: #ff4757;
    transform: rotate(90deg);
    box-shadow: 0 4px 12px rgba(255,71,87,0.3);
}

.side-dropdown-menu .close-menu i {
    color: var(--text-dark);
    font-size: 16px;
    font-weight: 600;
}

.side-dropdown-menu .close-menu:hover i {
    color: white;
}

.nav-scrollable {
    height: calc(100vh - 80px);
    overflow-y: auto;
    margin-top: 80px;
}

.side-dropdown-menu ul {
    list-style: none;
    margin: 0;
    padding: 20px 0;
    width: 100%;
}

.side-dropdown-menu li {
    margin-bottom: 8px;
}

.side-dropdown-menu li a {
    display: block;
    padding: 15px 25px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
    position: relative;
}

.side-dropdown-menu li a::before {
    content: '\f138';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-right: 10px;
    opacity: 0.7;
}

.side-dropdown-menu li a:hover {
    background: linear-gradient(90deg, rgba(0,102,204,0.1), rgba(0,180,216,0.1));
    color: var(--primary-blue);
    border-left: 4px solid var(--primary-blue);
    padding-left: 35px;
}

/* Navigation Header */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-teal));
    z-index: 5;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
}

.nav-logo i {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.nav-logo span {
    font-size: 18px;
    font-weight: 700;
}

/* Modern Toggle Button */
.left-menu-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 20px;
    color: var(--primary-blue);
    margin-right: 20px;
    padding: 12px;
    border-radius: 12px;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(29, 78, 216, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.2);
    backdrop-filter: blur(10px);
}

.left-menu-toggle:hover {
    transform: scale(1.05);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(29, 78, 216, 0.2));
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* Scrollbar Styling */
.nav-scrollable::-webkit-scrollbar {
    width: 6px;
}

.nav-scrollable::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.05);
}

.nav-scrollable::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 3px;
}

.nav-scrollable::-webkit-scrollbar-thumb:hover {
    background: var(--primary-teal);
}

/* Menu Categories */
.nav-category {
    color: var(--text-light);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 20px 25px 10px 25px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--bg-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .side-dropdown-menu {
        width: 280px;
    }
}

.mobile-menu {
    display: none !important;
}