/* Side Panel */
.side-panel {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 43px;
    background: linear-gradient(to bottom, #2584C4, #00CC52);
    z-index: 98;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 1.5rem 0;
}

/* Side panel dropdown toggle */
.side-dropdown-toggle {
    background: none;
    border: none;
    color: white;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    padding: 8px 0;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 10px;
    position: relative;
}

.side-dropdown-toggle i {
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.side-dropdown-toggle .fa-plus {
    position: relative;
}

.side-dropdown-toggle .fa-chevron-down {
    position: relative;
    transition: transform 0.3s ease;
}

.side-dropdown-toggle:hover {
    color: #1A1D21;
}

.side-dropdown-toggle.active .fa-plus {
    transform: rotate(90deg);
}

.side-dropdown-toggle.active .fa-chevron-down {
    transform: rotate(180deg);
}

/* Side panel dropdown content */
.side-dropdown-content {
    visibility: hidden;
    opacity: 0;
    height: 0;
    flex-direction: column;
    align-items: center;
    width: 100%;
    overflow: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, height 0.3s ease;
}

.side-dropdown-content.active {
    visibility: visible;
    opacity: 1;
    height: auto;
    display: flex;
}

/* Initial state for icons */
.side-dropdown-content .side-icon {
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* Animation for each icon when dropdown is active */
.side-dropdown-content.active .side-icon:nth-child(1) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.1s;
}

.side-dropdown-content.active .side-icon:nth-child(2) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.2s;
}

.side-dropdown-content.active .side-icon:nth-child(3) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.3s;
}

.side-dropdown-content.active .side-icon:nth-child(4) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.4s;
}

.side-dropdown-content.active .side-icon:nth-child(5) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.5s;
}

.side-panel .logo-link {
    position: relative;
    width: 35px;
    height: 35px;
    display: block;
}

/* Circle background */
.side-panel .logo-link::before {
    content: '';
    position: absolute;
    width: 25px;
    height: 25px;
    top: 15px;
    left: 5px;
    background: #2584C4;
    border-radius: 50%;
    z-index: 0;
    box-shadow: 0 0 10px 3px rgba(37, 132, 196, 0.7);
    animation: pulse-hub 3s infinite ease-in-out;
}

/* Network node spokes */
.side-panel .logo-link::after {
    display: none;
}

.side-panel .logo-small {
    width: 35px;
    height: 35px;
    padding: 0;
    background-color: transparent;
    transition: transform 0.3s ease, filter 0.3s ease;
    margin-bottom: 2rem;
    margin-top: 0.5rem !important;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.8));
}

@keyframes pulse-hub {
    0% {
        box-shadow: 0 0 10px 3px rgba(37, 132, 196, 0.7);
    }
    50% {
        box-shadow: 0 0 15px 5px rgba(37, 132, 196, 0.9);
    }
    100% {
        box-shadow: 0 0 10px 3px rgba(37, 132, 196, 0.7);
    }
}

.side-panel a:hover .logo-small {
    transform: scale(1.1);
}

.side-panel a:hover .logo-link::before {
    box-shadow: 0 0 15px 5px rgba(37, 132, 196, 0.9);
    animation: none;
}

.side-icons, .side-social {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 1.5rem;
}

.side-icons {
    margin-bottom: auto;
}

.side-social {
    margin-top: auto;
}

.side-icon {
    width: 100%;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    position: relative;
    margin-bottom: 0.5rem;
}

.side-icon:hover {
    color: #1A1D21;
}

.side-icon:not(.logo-icon):hover::after {
    content: '';
    position: absolute;
    left: 0;
    width: 3px;
    height: 100%;
    background-color: white;
}

.side-icon:not(.logo-icon)::before {
    content: attr(title);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    background-color: #1A1D21;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 99;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.side-icon:hover::before {
    opacity: 1;
    visibility: visible;
    left: calc(100% + 10px);
}

.side-text {
    display: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .side-panel {
        width: 40px;
    }
    
    .side-dropdown-toggle {
        padding: 6px 0;
        margin-bottom: 8px;
    }
    
    .side-dropdown-toggle i {
        font-size: 0.8rem;
    }
    
    .side-panel .logo-link {
        width: 30px;
        height: 30px;
    }

    .side-panel .logo-link::before {
        width: 22px;
        height: 22px;
        top: 4px;
        left: 4px;
        box-shadow: 0 0 8px 2px rgba(37, 132, 196, 0.7);
    }

    .side-panel .logo-small {
        width: 30px;
        height: 30px;
        margin-bottom: 1.5rem;
    }
    
    @keyframes pulse-hub {
        0% {
            box-shadow: 0 0 8px 2px rgba(37, 132, 196, 0.7);
        }
        50% {
            box-shadow: 0 0 12px 4px rgba(37, 132, 196, 0.9);
        }
        100% {
            box-shadow: 0 0 8px 2px rgba(37, 132, 196, 0.7);
        }
    }
    
    .side-icon {
        height: 35px;
        font-size: 1rem;
    }

    .side-text {
        font-size: 0.6rem;
        margin-bottom: 4rem;
    }
}