/* ==========================================================================
   COMPONENTS — buttons, nav shell, language switch
   Structural patterns reusable across First Chapter sites.
   Visual finish (colors/fonts) comes entirely from tokens.css.
   ========================================================================== */

/* ---------- Button ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px; /* touch target */
  padding: var(--space-xs) var(--space-md);
  background: var(--color-sage);
  color: var(--color-cream);
  font-family: var(--font-body);
  font-size: var(--fs-label);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  border: none;
  border-radius: 2px;
  transition: background var(--dur-fast) var(--ease-elegant),
              transform var(--dur-fast) var(--ease-elegant);
  white-space: nowrap;
}
.btn:hover,
.btn:focus-visible {
  background: var(--color-sage-light);
  transform: translateY(-1px);
}
.btn:active { transform: translateY(0); }

.btn--outline {
  background: transparent;
  border: 1px solid currentColor;
}
.btn--outline:hover,
.btn--outline:focus-visible {
  background: rgba(var(--color-cream-rgb), 0.1);
}

/* Light khaki button for use on dark section backgrounds (Hospedaje, etc.) */
.btn--outline-dark {
  background: var(--color-khaki-light);
  color: var(--color-olive-dark);
}
.btn--outline-dark:hover,
.btn--outline-dark:focus-visible {
  background: #d3d4c4;
}

/* ---------- Site Nav ---------- */
.site-nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 500;
  height: var(--nav-height-mobile);
  background: var(--color-cream);
  display: flex;
  align-items: center;
  transition: height var(--dur-fast) var(--ease-elegant), box-shadow var(--dur-fast) ease;
}
@media (min-width: 900px) {
  .site-nav { height: var(--nav-height); }
}
.site-nav.is-scrolled {
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

.site-nav__inner {
  width: var(--content-width);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-nav__links {
  display: none;
  align-items: center;
  gap: clamp(1rem, 2vw, 2.5rem);
}
@media (min-width: 900px) {
  .site-nav__links { display: flex; }
}
.site-nav__links a {
  font-family: var(--font-body);
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-dark);
  position: relative;
  padding-block: var(--space-3xs);
}
.site-nav__links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transition: right var(--dur-fast) var(--ease-elegant);
}
.site-nav__links a:hover::after,
.site-nav__links a:focus-visible::after {
  right: 0;
}

.site-nav__right {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.75rem);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.35em;
  font-family: var(--font-body);
  font-size: var(--fs-nav);
  letter-spacing: var(--tracking-wide);
}
.lang-switch button {
  background: none;
  border: none;
  color: var(--color-text-dark);
  opacity: 0.45;
  padding: var(--space-3xs);
  font: inherit;
  letter-spacing: inherit;
  min-height: 32px;
}
.lang-switch button[aria-pressed="true"] {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-nav__monogram img {
  height: 56px;
  width: auto;
}
@media (min-width: 900px) {
  .site-nav__monogram img { height: 68px; }
}

/* ---------- Mobile menu toggle ---------- */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  padding: 0;
}
@media (min-width: 900px) {
  .nav-toggle { display: none; }
}
.nav-toggle span {
  display: block;
  height: 1px;
  background: var(--color-text-dark);
  transition: transform var(--dur-fast) var(--ease-elegant), opacity var(--dur-fast) var(--ease-elegant);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  top: var(--nav-height-mobile);
  background: var(--color-cream);
  z-index: 490;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-elegant), transform var(--dur-fast) var(--ease-elegant);
}
.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
@media (min-width: 900px) {
  .mobile-menu { display: none; }
}
.mobile-menu a {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-text-dark);
}