/* NAVBAR */

header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
}

.navbar {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
  text-transform: uppercase;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 999px;
  border: 2px solid var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
}

nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.menu {
  list-style: none;
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.9rem;
}

.menu a {
  text-decoration: none;
  color: var(--text-color);
  opacity: 0.8;
  transition: opacity 0.15s ease;
  padding: 0.25rem 0;
}

.menu a:hover {
  opacity: 1;
}

.icon-button {
  border: 1px solid var(--border-color);
  background: transparent;
  border-radius: 999px;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease,
    border-color 0.15s ease;
}

.icon-img-button {
  margin-top: 5px;
}

.icon-button:hover {
  transform: translateY(-1px);
  background: rgba(148, 163, 184, 0.12);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.18);
  border-color: var(--accent-color);
}

.menu-toggle {
  display: none;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: transparent;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text-color);
  position: relative;
  transition: transform 0.2s ease, background 0.2s ease;
}

.menu-toggle span::before,
.menu-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text-color);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle span::before {
  top: -5px;
}

.menu-toggle span::after {
  top: 5px;
}

.menu-toggle.open span {
  transform: rotate(45deg);
}

.menu-toggle.open span::before {
  transform: rotate(-90deg) translateX(-5px);
}

.menu-toggle.open span::after {
  opacity: 0;
}

/* RESPONSIVE (menu) */
@media (max-width: 768px) {
  .navbar {
    padding-inline: 1rem;
  }

  nav {
    gap: 0.35rem;
  }

  .menu {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    padding: 0.75rem 1rem 0.9rem;
    background: var(--menu-bg-mobile);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--nav-border);
    flex-direction: column;
    align-items: flex-start;
    transform-origin: top;
    transform: scaleY(0.8);
    opacity: 0;
    pointer-events: none;
    border-radius: 0 0 1rem 1rem;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .menu a {
    color: var(--text-color);
    opacity: 0.85;
  }

  .menu.open {
    opacity: 1;
    pointer-events: auto;
    transform: scaleY(1);
  }

  .menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 600px) {
  .brand {
    font-size: 0.8rem;
  }
}

/* submenu */
.has-submenu {
    position: relative;
}

.menu-link {
	color: var(--text-color);
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}

.submenu {
    display: none;
    position: absolute;
    top: calc(100% + .5rem);
    left: 0;
    min-width: 190px;
    padding: .5rem;
    border-radius: .6rem;
    background: var(--nav-bg-submenu);
	color: var(--text-color);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .12);
    z-index: 999;
}

.submenu li {
    list-style: none;
}

.submenu a {
    color: var(--text-color);
    display: block;
    padding: .45rem .6rem;
    border-radius: .45rem;
    text-decoration: none;
}

.submenu a:hover {
    background: rgba(0, 0, 0, .06);
}

.has-submenu::after{
  content:"";
  position:absolute;
  left:0;
  top:100%;
  width:100%;
  height:12px;
}

/* Desktop: aparece con hover */
@media (hover:hover) {
    .has-submenu:hover>.submenu {
        display: block;
    }

    .has-submenu:hover::after {
        display: block;
    }
}

/* Estado abierto por click (móvil o teclado) */
.has-submenu.open>.submenu {
    display: block;
}