nav button.logout {
  margin-left: 8px;
  border: 1px solid #e6bbb4;
  background: #f8e7e4;
  color: #923b31;
}

nav button.logout:hover {
  background: #f3d8d3;
}

.menu-toggle {
  display: none;
}

@media (max-width: 600px) {
  header {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .menu-toggle {
    display: inline-flex;
    width: 48px;
    height: 48px;
    padding: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid #d9dfdf;
    background: #fff;
  }

  .menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: #265967;
    transition: transform .2s ease, opacity .2s ease;
  }

  header nav {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
    padding-top: 12px;
    border-top: 1px solid #edf0ee;
  }

  header.menu-open nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  header.menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  header.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
  header.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  header nav button {
    width: 100%;
    min-height: 44px;
  }

  nav button.logout {
    margin-left: 0;
    grid-column: 1 / -1;
  }
}