.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2.5rem 12% 2.5rem;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
    border-bottom: 1px solid rgba(139, 92, 246, 0.2);
}

.logo {
    font-size: 2.2rem;
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s ease;
}

.logo:hover {
    color: var(--main-color);
}

.logo span {
    color: var(--main-color);
}

.navbar a {
    font-size: 1.6rem;
    color: var(--text-color);
    margin-left: 3rem;
    font-weight: 400;
    transition: 0.3s ease;
    border-bottom: 2px solid transparent;
    opacity: 0.8;
}

.navbar a:hover,
.navbar a.active {
    color: var(--main-color);
    opacity: 1;
}

#menu-icon {
    font-size: 3.6rem;
    color: var(--main-color);
    display: none;
}