.header {
  position: sticky;
  top: 0;
  z-index: 1;
  width: calc(100vw - 2rem);
  margin-inline: auto;
  padding-block: 0.5rem;
  background: linear-gradient(
    0deg,
    rgb(206 206 206 / 0.9) 0%,
    rgb(252 252 252 / 0.9) 50%
  );
  box-shadow: 0 0.2rem 0.4rem -0.2rem rgb(0 0 0 / 0.4);
  border-radius: 0 0 0.5rem 0.5rem;
  border: 1px solid var(--light-700);
  transform: skewX(-10deg);
  backdrop-filter: blur(3px);
}

.header ul {
  display: flex;
  align-items: center;
  gap: 1rem;
  transform: skewX(10deg);
  font-size: 0.75rem;
}

.header li:last-of-type {
  margin-left: auto;
}

.header .signin {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-weight: bold;
  border-radius: 50vh;
  border: 2px solid var(--blue-500);
}

.header .signin img {
  width: 1rem;
}

.header .search {
  display: flex;
  align-items: center;
}

.header .search input[type='text'] {
  padding: 0.5rem;
  border-radius: 0.5rem 0 0 0.5rem;
  border: 1px solid var(--light-700);
}

.header .search input[type='text']::placeholder {
  font-size: 0.75rem;
  opacity: 0.8;
}

.header .search input[type='submit'] {
  padding: 0.5rem 1rem;
  border-radius: 0 0.5rem 0.5rem 0;
  border: 1px solid var(--light-700);
  border-left: none;
}