header, footer {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--second);
  padding: 2rem 5rem;
  box-shadow: 0 1.5px 5px rgba(0, 0, 0, 0.205);
}

footer p {
  width: 100%;
  display: block;
  text-align: center;
}

header {
  position: sticky;
  top: 0;
  z-index: 9996;
}

/* logo */
header .logo {
  font-size: 1.8rem;
  font-weight: 700;
}

header .logo span {
  color: var(--primary);
  font-weight: 400;
}

header .head-nav .head-ul {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
}

header .head-nav .head-ul li a {
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

header .head-nav .head-ul li a:hover {
  color: var(--primary);
}

header .head-nav .head-ul li a::after {
  display: block;
  content: "";
  width: 100%;
  border-bottom: 0.1rem solid var(--primary);
  transform: scaleX(0);
  transition: transform 0.5s ease;
}

header .head-nav .head-ul li a:hover::after {
  transform: scaleX(0.8);
}

header .search-box {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.8rem;
}

header .toggle {
  display: none;
}

header input {
  width: 8rem;
  padding: 0.2rem 1rem;
  font-size: 0.7rem;
  border-radius: 0.8rem;
  border: 0.1rem solid var(---addition);
  transition: border 0.3s ease;
}

header input:focus {
  border: 0.1rem solid var(--primary);
}

header .search,
header .toggle {
  cursor: pointer;
  opacity: 1;
  transition: opacity 0.3s ease;
}

header .search:active,
header .toggle:active {
  opacity: 0.5;
}

/* responsive */
@media (max-width: 768px) {
  header {
    padding: 2rem;
  }
  header .toggle {
    display: block;
  }

  header .head-nav .head-ul {
    position: absolute;
    flex-direction: column;
    width: 50%;
    min-height: 100vh;
    left: 0;
    top: 0;
    background-color: var(--second);
    z-index: 9998;
    pointer-events: none;
    opacity: 0;
    transform: translateX(-50%);
    transition: all 0.4s ease;
  }

  header .head-nav .head-ul.active {
    pointer-events: auto;
    opacity: 1;
    transform: translateX(0);
  }

  header .search-box {
    padding: 0.5rem 1.5rem;
    position: absolute;
    top: 110%;
    left: 0;
    width: 100%;
    z-index: 9997;
  }

  header input {
    width: 30rem;
    max-width: 80%;
  }
}