header {
  background-color: var(--header-bg-color);
  color: var(--text-color-dark);
  padding: var(--header-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--logo-font);
}

header .logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

header .logo-text-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

header .logo {
  width: 100px;
  height: 100px;
}

header .logo-text {
  font-size: 2rem;
  font-weight: bold;
  font-family: var(--logo-font);
  font-weight: 600;
  letter-spacing: 0.02em;
}

header .logo-subtitle {
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--body-font);
  letter-spacing: 0.02em;
}

header nav ul {
  display: flex;
  gap: 1rem;
  list-style: none;
}

header nav ul li {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

header nav ul li a {
  position: relative;
  display: inline-block;
  padding: 0.5rem 1rem;
  text-decoration: none;
  color: var(--text-color-dark);
  font-family: var(--body-font);
  font-weight: 600;
  letter-spacing: 0.02em;
}

header nav ul li a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease-in-out;
}

header nav ul li a:hover:after {
  transform: scaleX(0.5);
}

footer {
  background-color: var(--header-bg-color);
  color: var(--text-color-dark);
  padding: var(--footer-padding);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
}