.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    margin-right: 16px;
}
.hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: #1a1a2e;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 600px) {
    header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        height: 60px;
    }
    .logo img { width: 40px; margin-left: 12px; }
    .logo span { font-size: 10px; }
    .hamburger { display: flex; }

    header nav {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0);
        border-bottom: 1px solid rgba(2, 2, 2, 0);
        z-index: 999;
        transform: translateY(-110%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
         pointer-events: none;   
    }
    header nav.open {
        transform: translateY(0);       /* ← só isto, sem display */
        pointer-events: all;
         background: rgba(255, 255, 255, 0.884);
    }
    header nav a {
        padding: 13px 20px;
        font-size: 13px;
        border-bottom: 1px solid rgba(0,0,0,0.06);
    }
    header nav a:last-child { border-bottom: none; }
    header nav a:hover {
        background: rgba(197, 227, 252, 0.89);
        text-decoration: none;
    }
}