/*
    <header class="header">
        <p class="hd-p-logo">
            [Logo]
        </p>
        
        <button class="hd-bn-modos" type="button" aria-label="Cambiar modo de color">
            <i class="bi bi-sun hd-bn-modos-sun" aria-hidden="true"></i>
            <i class="bi bi-moon hd-bn-modos-moon" aria-hidden="true"></i>
        </button>

        <button class="hd-bn-hamburguesa" type="button" aria-label="Menú de navegación">
            <i class="bi bi-list" aria-hidden="true"></i>
            <i class="bi bi-x-lg" aria-hidden="true"></i>
        </button>

        <nav class="hd-nav" aria-label="Navegación principal">
            <ul class="hd-nav-ul">
                <li class="hd-nav-ul-li">
                    <a class="hd-nav-ul-li-a" href="#Inicio">Inicio</a>
                </li>
                <li class="hd-nav-ul-li">
                    <a class="hd-nav-ul-li-a" href="#Categorias">Categorías</a>
                    <ul class="submenu">
                    </ul>
                </li>
                <li class="hd-nav-ul-li">
                    <a class="hd-nav-ul-li-a" href="#Datos">Información</a>
                </li>
            </ul>
        </nav>
    </header>
*/

.header {
  position: sticky;
  top: 0;
  z-index: 800;
  width: 100%;
  border-bottom: 4px solid var(--hn0);
  box-shadow: var(--shadow-xm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  gap: 0.75rem;

  backdrop-filter: blur(12px);
  background: linear-gradient(
    to bottom,
    var(--hn1),
    var(--hn2)
  );
}

.hd-p-logo {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--hn3);
  display: flex;
  align-items: center;
  line-height: 1.2;

  background: linear-gradient(
    90deg,
    var(--hn4),
    var(--hn5)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hd-p-logo:hover {
  filter: brightness(1.1);
}

.hd-bn-modos {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--hn6);
  color: var(--hn7);
  border: 2px dashed var(--hn8);
  box-shadow: var(--shadow-sm);
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease,
    transform 0.15s ease;
}

.hd-bn-modos:hover {
  background: var(--hn9);
  color: var(--hn10);
}

.hd-bn-modos:active {
  transform: scale(0.96);
}

.hd-bn-modos i {
font-size: 1.1rem;
line-height: 1;
}

.hd-bn-modos-sun {
position: absolute;
font-size: 1.1rem;
opacity: 1;
transform: rotate(0deg) scale(1);
transition: opacity 0.25s ease, transform 0.25s ease;
}

body.dark .hd-bn-modos-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.6);
}

.hd-bn-modos-moon {
  position: absolute;
  font-size: 1.1rem;
  opacity: 0;
  transform: rotate(90deg) scale(0.6);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

body.dark .hd-bn-modos-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.hd-bn-hamburguesa {
  z-index: 910;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--hn6);
  color: var(--hn7);
  border: 2px dashed var(--hn8);
  box-shadow: var(--shadow-sm);
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease,
    transform 0.15s ease;
}

.hd-bn-hamburguesa:hover {
  background: var(--hn9);
  color: var(--hn10);
  box-shadow: var(--shadow-lg);
}

.hd-bn-hamburguesa:active {
  transform: scale(0.96);
}

.hd-bn-hamburguesa i {
  position: absolute;
  font-size: 1.25rem;
  line-height: 1;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.hd-bn-hamburguesa i:last-child {
  opacity: 0;
  transform: rotate(90deg) scale(0.7);
}

.bi-list {
  position: absolute;
  font-size: 1.25rem;
  line-height: 1;
  transform: rotate(0deg) scale(1);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.bi-x-lg {
  position: absolute;
  font-size: 1.2rem;
  line-height: 1;
  transform: rotate(90deg) scale(0.7);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}

.hd-bn-hamburguesa {
  position: relative;
}

.hd-bn-hamburguesa .bi-list {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.hd-bn-hamburguesa .bi-x-lg {
  opacity: 0;
  transform: rotate(90deg) scale(0.7);
}

.hd-bn-hamburguesa.activo .bi-list {
  opacity: 0;
  transform: rotate(-90deg) scale(0.7);
}

.hd-bn-hamburguesa.activo .bi-x-lg {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.hd-nav {
  position: fixed;
  top: 100%;
  right: 0;
  width: 100%;

  background: linear-gradient(
    145deg,
    var(--hn12),
    var(--hn13)
  );

  border: 0.5rem solid var(--hn14);
  padding: 1.75rem 2.5rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    transform 0.32s ease,
    opacity 0.25s ease,
    visibility 0.25s ease;
  overflow-y: auto;
  z-index: 900;

  transform: translateY(-20px);
  box-shadow:
    var(--shadow-xl),
    inset 0 1px 0 rgba(255,255,255,0.05);

  border-radius: 1rem;
}

.hd-nav,
.hd-nav * {
  transition-timing-function: 
    cubic-bezier(0.4, 0, 0.2, 1);
}

.hd-nav.nav-abierto {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.hd-nav-ul {
  list-style: none;
  margin: 0;
  padding: 0;

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;

  gap: 1.5rem;
  width: 100%;
}

.hd-nav-ul-li {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;

  align-items: center;

  padding: 0.4rem 0.75rem;
  border-radius: 0.2rem;

  background: linear-gradient(
    135deg,
    var(--hn15),
    var(--hn16)
  );
}

.hd-nav-ul-li-a {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.25rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--hn17);
  transition: color 0.2s ease;
  letter-spacing: 0.03em;
}

.hd-nav-ul-li-a:hover {
  color: var(--hn18);
}

.hd-nav-ul-li-a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  background: linear-gradient(
    90deg,
    var(--hn19),
    var(--hn20)
  );
  height: 3px;
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.hd-nav-ul-li:hover > .hd-nav-ul-li-a::after {
  transform: scaleX(1);
}

.submenu {
  display: grid;
  gap: 0.5rem;

  list-style: none;

  max-height: 0;
  opacity: 0;
  overflow: hidden;

  transition:
    max-height 0.35s ease,
    opacity 0.25s ease,
    margin-top 0.25s ease;

  background: linear-gradient(
    160deg,
    var(--hn21),
    var(--hn22)
  );

  box-shadow:
    var(--shadow-lg),
    0 8px 30px rgba(0,0,0,0.08);

  border-radius: 1rem;
}


.submenu li {
  width: 100%;
}

.submenu a {
  display: block;
  width: 100%;
  padding: 0.65rem 0.75rem;

  border-radius: 0.5rem;

  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;

  color: var(--hn23);
  background-color: transparent;

  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    transform 0.15s ease;
}

.submenu a:hover {
  background-color: var(--hn24);
  color: var(--hn17);
}

.submenu a:active {
  transform: translateX(4px);
}

.submenu.submenu-abierto {
  max-height: 500px;
  opacity: 1;
  margin-top: 1rem;
}


@media (min-width: 768px) {
  .header {
  padding: 0.9rem 1.75rem;
  }

  .hd-p-logo {
  font-size: 1.8rem;
  }

  .hd-bn-modos {
  width: 2.75rem;
  height: 2.75rem;
  }

  .hd-bn-modos-sun, .hd-bn-modos-moon {
  font-size: 1.2rem;
  }

  .hd-bn-hamburguesa {
    display: none;
  }
  
  .hd-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;

    position: static;
    height: auto;
    width: auto;
    padding: 0.5rem 1rem;
    transform: none;
    display: flex;
    align-items: center;

    overflow: visible;
  }

  .hd-nav.nav-abierto {
  transform: none;
  }

  .hd-nav-ul {
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;

    gap: 2.25rem;
    width: auto;
  }

  .hd-nav-ul-li {
    width: auto;
    align-items: center;
    background: transparent;
    padding: 0;
    border-radius: 0;
  }

  .hd-nav-ul-li + .hd-nav-ul-li {
    border-top: none;
    padding-top: 0;
  }

  .hd-nav-ul-li {
    position: relative;
  }

  .hd-nav-ul-li::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 0.75rem;
  }

  .hd-nav-ul-li:hover > .submenu,
  .hd-nav-ul-li:focus-within > .submenu {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }

  .hd-nav-ul-li:has(.submenu) > .hd-nav-ul-li-a {
    cursor: pointer;
  }

  .submenu {
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 75%;
    transform: translateX(-50%) translateY(8px);

    max-height: none;

    min-width: 260px;
    padding: 1rem;

    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);

    opacity: 0;
    pointer-events: none;

    transition:
      opacity 0.25s ease,
      transform 0.25s ease;
  }
}

@media (min-width: 1024px) {
  .hd-p-logo {
  font-size: 2rem;
  }
  .header {
  padding: 1rem 2.5rem;
  }
}

@media (min-width: 1440px) {
  .header {
  padding-left: 4rem;
  padding-right: 4rem;
  }
}