.header {
  position: relative;
  width: 100%;
  background-color: var(--color-gray);
  border-bottom: var(--border-width) solid var(--color-gray-medium);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.header__logo {
  display: inline-block;
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--color-red);
  padding: var(--space-2) var(--space-1);
}

.header__toggle-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.header__toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  cursor: pointer;
  z-index: 20;
}

.header__toggle-bar {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-black);
  border-radius: 2px;
}

.header__nav {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
  z-index: 10;
  border-bottom: var(--border-width) solid var(--color-gray-medium);
}

.header__toggle-input:checked ~ .header__nav {
  max-height: 1200px;
}

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

.header__item {
  border-top: var(--border-width) solid var(--color-gray-light);
}

.header__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-menu);
  font-weight: var(--fw-bold-menu);

}

.header__link.header__link--alumnos,
.header__link.header__link--docentes {
  color: var(--color-white);
  font-weight: var(--fw-bold);
  border-radius: 10px;
  padding: var(--space-2) var(--space-4);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: filter var(--transition-base), box-shadow var(--transition-base);
}

.header__link--alumnos {
  background: linear-gradient(to top, var(--color-blue) 0%, #120b68 100%);
}

.header__link--docentes {
  background: linear-gradient(to top, var(--color-red) 0%, #601010 100%);
}

.header__link--alumnos:hover,
.header__link--docentes:hover {
  filter: brightness(1.15);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.28);
}

.header__item--dropdown > .header__link::after {
  content: "⌄";
  display: inline-block;
  margin-left: var(--space-1);
  transition: transform var(--transition-base);
}

.header__submenu-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.header__link {
  cursor: pointer;
}

.header__submenu {
  display: none;
  flex-direction: column;
  background-color: var(--color-gray-light);
}

.header__submenu-toggle:checked ~ .header__submenu {
  display: flex;
}

.header__submenu-toggle:checked ~ .header__link::after {
  transform: rotate(180deg);
}

.header__sublink {
  display: block;
  padding: var(--space-2) var(--space-4) var(--space-2) var(--space-6);
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .header__toggle {
    display: none;
  }

  .header__nav {
    position: static;
    width: auto;
    max-height: none;
    overflow: visible;
    background: none;
    border-bottom: none;
  }

  .header__list {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    gap: var(--space-2);
  }

  .header__item {
    position: relative;
    border-top: none;
  }

  .header__link {
    padding: var(--space-2) var(--space-1);
    font-size: var(--fs-sm);
    white-space: nowrap;
  }

  .header__link.header__link--alumnos,
  .header__link.header__link--docentes {
    padding: var(--space-2) var(--space-3);
  }

  .header__logo img {
    height: 55px !important;
  }

  .header__submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    flex-direction: column;
    background-color: var(--color-white);
    border: var(--border-width) solid var(--color-gray-medium);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
  }

  .header__item--dropdown:hover .header__submenu,
  .header__item--dropdown:focus-within .header__submenu {
    display: flex;
  }

  .header__sublink {
    color: var(--color-text);
    padding: var(--space-2) var(--space-3);
  }

  .header__sublink:hover {
    background-color: var(--color-gray-light);
  }
}

@media (max-width: 480px) {
  .header__logo {
    font-size: var(--fs-base);
    padding: var(--space-1) var(--space-3);
  }
}