/* Header Component */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--header-z-index);
  display: flex;
  justify-content: space-between;
  width: 100%;
  pointer-events: none;
}

.header a,
.header button {
  pointer-events: auto;
}

/* Left Menu (Logo + Navigation) */
.header__left {
  display: flex;
  flex-direction: column;
  padding: 0;
}

.header__logo {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height);
  color: var(--color-primary);
}

.header__nav {
  display: flex;
  flex-direction: column;
}

.header__nav-link {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height);
  color: var(--color-text);
}

/* Right Menu (Artwork) */
.header__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.header__artwork-toggle {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height);
  color: var(--color-text);
  text-align: right;
  cursor: pointer;
  transition: color 0.2s ease;
}

.header__right.is-expanded .header__artwork-toggle {
  color: var(--color-secondary);
}

.header__artwork-menu {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.header__artwork-link {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height);
  color: var(--color-text);
  text-align: right;
}


/* Web version (≥641px) */
@media (min-width: 641px) {
  .header {
    padding: 0;
  }

  .header__artwork-link {
    color: var(--color-text);
  }

  .header__right.is-expanded .header__artwork-toggle {
    color: var(--color-secondary);
  }
  .header__left,
  .header__right {
    padding: 0;
  }

  /* Artwork submenu always visible on web */
  .header__artwork-menu {
    display: flex;
  }

  .header__artwork-toggle {
    cursor: default;
  }

  .header__artwork-toggle {
    color: var(--color-secondary);
    cursor: default;
    font-weight: 700;
  }
}

/* Mobile version (≤640px) */
@media (max-width: 640px) {
  .header__left {
    position: fixed;
    top: 0;
    left: 0;
  }

  .header__right {
    position: fixed;
    bottom: 0;
    right: 0;
  }

  /* Mobile menu shadow effect */
  .header__artwork-toggle,
  .header__artwork-link {
    text-shadow: var(--shadow-menu);
  }

  /* Artwork submenu hidden by default on mobile */
  .header__artwork-menu {
    display: none;
    flex-direction: column;
    align-items: flex-end;
  }

  /* Show submenu when expanded */
  .header__right.is-expanded .header__artwork-menu {
    display: flex;
  }

  .header__artwork-toggle {
    cursor: pointer;
  }
}