/* Mobile Bottom Navigation */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid var(--border-color);
    z-index: 9999;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
    padding: 0;
    justify-content: space-around;
    align-items: center;
    height: 56px;
}
.mobile-bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.65rem;
    font-weight: 600;
    text-decoration: none;
    padding: 6px 0;
    flex: 1;
    transition: color 0.2s;
    gap: 2px;
    border-top: 2px solid transparent;
}
.mobile-bottom-nav a i {
    font-size: 1.2rem;
    transition: transform 0.2s;
}
.mobile-bottom-nav a:hover,
.mobile-bottom-nav a.active {
    color: var(--primary-red);
    border-top-color: var(--primary-red);
}
.mobile-bottom-nav a:hover i,
.mobile-bottom-nav a.active i {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
    }
    body {
        padding-bottom: 60px;
    }
    .notification-btn {
        bottom: 140px !important;
    }
    .back-to-top {
        bottom: 70px !important;
    }
}

body.dark-mode .mobile-bottom-nav {
    background: #1e293b;
    border-top-color: #334155;
}
body.dark-mode .mobile-bottom-nav a {
    color: #94a3b8;
}
body.dark-mode .mobile-bottom-nav a:hover,
body.dark-mode .mobile-bottom-nav a.active {
    color: var(--primary-red);
}