/* ==========================================================================
   Layout — Top bar, Header, Nav, Footer, Grids
   ========================================================================== */

/* ---------- Top bar (mini, encima del header) ---------- */
.topbar {
  background: var(--color-primary-700);
  color: var(--color-ink-on-primary);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wide);
  height: var(--topbar-h);
  display: flex;
  align-items: center;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
}
.topbar__contact { display: flex; gap: var(--space-5); align-items: center; flex-wrap: wrap; }
.topbar__contact a {
  color: inherit;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  opacity: 0.9;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.topbar__contact a:hover { opacity: 1; color: var(--color-ink-on-primary); }
.topbar__contact svg { width: 14px; height: 14px; }

.topbar__social { display: flex; gap: var(--space-3); align-items: center; }
.topbar__social a { color: inherit; opacity: 0.85; transition: opacity var(--dur-fast); }
.topbar__social a:hover { opacity: 1; color: inherit; }
.topbar__social svg { width: 16px; height: 16px; }

@media (max-width: 768px) {
  .topbar { display: none; }
}

/* ---------- Header / Navegación principal ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(250, 246, 240, 0.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-line);
  box-shadow: var(--shadow-xs);
  background: rgba(250, 246, 240, 0.98);
}

.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-ink);
  flex-shrink: 0;
}
.site-logo img,
.site-logo svg { height: 56px; width: auto; }
.site-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.site-logo__name {
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-primary);
}
.site-logo__tag {
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-top: 2px;
}

/* ---- Navegación ---- */
.site-nav { display: flex; align-items: center; gap: var(--space-5); }
.site-nav__list {
  display: flex;
  gap: var(--space-5);
  list-style: none;
  padding: 0; margin: 0;
}
.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) 0;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-ink);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}
.site-nav__link:hover,
.site-nav__link[aria-current="page"] { color: var(--color-primary); }
.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

/* ---- Submenú dropdown ---- */
.site-nav__item--has-submenu { position: relative; }
.site-nav__submenu {
  position: absolute;
  top: 100%;
  left: -1rem;
  min-width: 280px;
  padding: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  list-style: none;
  margin: 0;
  display: grid;
  gap: 2px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              visibility var(--dur-base);
  z-index: var(--z-overlay);
}
.site-nav__item--has-submenu:hover .site-nav__submenu,
.site-nav__item--has-submenu:focus-within .site-nav__submenu,
.site-nav__item--has-submenu.is-open .site-nav__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.site-nav__submenu a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-ink);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.site-nav__submenu a:hover {
  background: var(--color-bg-soft);
  color: var(--color-primary);
}

.site-nav__caret {
  width: 12px; height: 12px;
  transition: transform var(--dur-base) var(--ease-out);
}
.site-nav__item--has-submenu:hover .site-nav__caret,
.site-nav__item--has-submenu.is-open .site-nav__caret { transform: rotate(180deg); }

/* ---- Hamburger ---- */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
}
.nav-toggle:hover { background: var(--color-bg-soft); }
.nav-toggle svg { width: 24px; height: 24px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* ---- Mobile nav ---- */
@media (max-width: 1024px) {
  .nav-toggle { display: inline-flex; }
  .site-nav__cta { display: none; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: var(--space-5) var(--container-pad) var(--space-7);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--dur-base) var(--ease-out);
    z-index: var(--z-overlay);
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav__list {
    flex-direction: column;
    gap: 0;
    width: 100%;
  }
  .site-nav__list > li {
    border-bottom: 1px solid var(--color-line);
  }
  .site-nav__link {
    padding: var(--space-4) 0;
    font-size: var(--fs-md);
    width: 100%;
    justify-content: space-between;
  }
  .site-nav__link::after { display: none; }
  .site-nav__submenu {
    position: static;
    box-shadow: none;
    border: 0;
    background: transparent;
    padding: 0 0 var(--space-3) var(--space-4);
    opacity: 1;
    visibility: visible;
    transform: none;
    display: none;
  }
  .site-nav__item--has-submenu.is-open .site-nav__submenu { display: grid; }
  .site-nav__cta-mobile {
    display: flex !important;
    margin-top: var(--space-5);
    width: 100%;
    justify-content: center;
  }
  body.nav-open { overflow: hidden; }
}
@media (min-width: 1025px) {
  .site-nav__cta-mobile { display: none; }
}

/* ---------- Grids reutilizables ---------- */
.grid {
  display: grid;
  gap: var(--space-5);
}
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto-280 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.grid--auto-320 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary-700);
  color: var(--color-bg);
  padding-block: var(--space-8) var(--space-5);
  margin-top: var(--space-8);
}
.site-footer a { color: var(--color-primary-100); }
.site-footer a:hover { color: var(--color-bg); }

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-7);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid rgba(250, 246, 240, 0.15);
}
@media (max-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .site-footer__grid { grid-template-columns: 1fr; gap: var(--space-6); }
}

.site-footer__brand img,
.site-footer__brand svg { height: 64px; width: auto; margin-bottom: var(--space-4); filter: brightness(0) invert(1); opacity: 0.95; }
.site-footer__brand p { color: var(--color-primary-100); font-size: var(--fs-sm); }

.site-footer__heading {
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  color: var(--color-bg);
}

.site-footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-2);
  font-size: var(--fs-sm);
}
.site-footer__list a { text-decoration: none; }

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-5);
  font-size: var(--fs-xs);
  color: var(--color-primary-100);
}
.site-footer__legal-links {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-4);
}
.site-footer__social a {
  width: 40px; height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(250, 246, 240, 0.25);
  border-radius: 50%;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.site-footer__social a:hover {
  background: var(--color-bg);
  border-color: var(--color-bg);
  color: var(--color-primary-700);
}
.site-footer__social svg { width: 18px; height: 18px; }