header {
    position: fixed;
    top: 0;
    width: 100%;
    height: 70px;
    background: var(--color-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 15%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo {
    font-size: 1.5rem; 
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

nav {
    display: flex;
    gap: 2.5rem;
}

nav a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 600; 
    font-size: 1rem; 
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-fast);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0; 
    width: 100%;
    height: 2px; 
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-fast);
}

nav a:hover {
    color: var(--color-primary);
}

nav a:hover::after {
    transform: scaleX(1.2);
}

.menu-toggle {
    display: none;
}

.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.hamburger span {
    width: 28px; 
    height: 3px;
    background-color: var(--color-dark);
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}


@media (min-width: 768px) and (max-width: 1023px) {
    header {
        height: 75px; 
        padding: 0 6%;
    }

    .logo {
        font-size: 1.8rem; 
    }

    nav {
        gap: 2rem;
    }
    
    nav a {
        font-size: 1rem;
    }
}

@media (max-width: 767px) {
    header {
        height: 70px;
        padding: 0 6%;
    }

    .logo {
        font-size: 1.6rem;
    }

    .hamburger {
        display: flex;
    }

    nav {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 50vw; 
        height: calc(100vh - 70px);
        background-color: var(--color-light);
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-top: 2.5rem;
        gap: 2.5rem;
        transition: right var(--transition-fast);
        box-shadow: -5px 10px 15px rgba(0, 0, 0, 0.05);
    }

    .menu-toggle:checked ~ nav {
        right: 0;
    }

    .menu-toggle:checked ~ .hamburger span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .menu-toggle:checked ~ .hamburger span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle:checked ~ .hamburger span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}