/* Hamburger Menu Button */
.hamburger {
    position: fixed;
    left: 20px;
    top: calc((var(--header-height) - 40px) / 2);
    width: 40px;
    height: 40px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background-color: transparent;
    border: none;
    z-index: var(--z-hamburger);
    pointer-events: auto !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1 !important;
    visibility: visible !important;
}

.hamburger:hover {
    background-color: var(--bg-light);
}

.hamburger-box {
    width: 20px;
    height: 14px;
    position: relative;
    display: inline-block;
    transition: transform 0.2s ease-in-out;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    position: absolute;
    left: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hamburger-inner {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger-inner::before {
    content: '';
    top: -6px;
}

.hamburger-inner::after {
    content: '';
    bottom: -6px;
}

/* Active state */
.hamburger.active {
    transform: rotate(180deg);
}

.hamburger.active .hamburger-inner {
    transform: rotate(45deg);
    transition-delay: 0.12s;
    transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
}

.hamburger.active .hamburger-inner::before {
    top: 0;
    opacity: 0;
    transition: top 0.1s ease-out,
                opacity 0.1s 0.12s ease-out;
}

.hamburger.active .hamburger-inner::after {
    bottom: 0;
    transform: rotate(-90deg);
    transition: bottom 0.1s ease-out,
                transform 0.22s 0.12s cubic-bezier(0.215, 0.61, 0.355, 1);
}

/* Hover effects */
.hamburger:hover .hamburger-inner,
.hamburger:hover .hamburger-inner::before,
.hamburger:hover .hamburger-inner::after {
    background-color: var(--primary-hover);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hamburger {
        top: 15px;
        left: 15px;
    }
}