/* ============================================================
   AHCD — Layout
   Container, Stack, Grid, secciones, Header, Footer y Nav.
   ============================================================ */

/* ── Container ──────────────────────────────────────────────── */
.container {
  width: 100%;
  padding-inline: var(--space-16);
  margin-inline: auto;
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-32);
    max-width: 900px;
  }
}

@media (min-width: 1100px) {
  .container {
    padding-inline: var(--space-48);
    max-width: 1240px;
  }
}

.container--narrow {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: var(--space-16);
}

/* ── Stack (ritmo vertical) ──────────────────────────────────── */
.stack         { display: flex; flex-direction: column; gap: var(--space-16); }
.stack--xs     { gap: var(--space-4); }
.stack--sm     { gap: var(--space-8); }
.stack--md     { gap: var(--space-24); }
.stack--lg     { gap: var(--space-48); }
.stack--xl     { gap: var(--space-64); }

/* ── Grid ─────────────────────────────────────────────────────── */
.grid {
  display: grid;
  gap: var(--space-24);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1100px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ── Secciones ──────────────────────────────────────────────── */
.section {
  padding-block: var(--space-48);
}

@media (min-width: 768px) {
  .section { padding-block: var(--space-64); }
}

@media (min-width: 1100px) {
  .section { padding-block: var(--space-96); }
}

.section--white { background-color: var(--c-white); }
.section--gray  { background-color: var(--c-bg); }
.section--blue  { background-color: var(--c-blue); color: var(--c-white); }

.section__header {
  margin-bottom: var(--space-32);
}

@media (min-width: 1100px) {
  .section__header {
    margin-bottom: var(--space-48);
  }
}

.section__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-blue-2);
  margin-bottom: var(--space-8);
}

.section--blue .section__label {
  color: rgba(255, 255, 255, 0.7);
}

.section__title {
  font-size: var(--text-lg);
  color: var(--c-blue);
  margin-bottom: var(--space-16);
}

.section--blue .section__title {
  color: var(--c-white);
}

@media (min-width: 1100px) {
  .section__title { font-size: var(--text-xl); }
}

.section__lead {
  font-size: var(--text-base);
  color: var(--c-text);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
  opacity: 0.85;
  text-align: center;
}

/* Variantes de color explícitas (para uso en secciones de fondo azul) */
.section__title--white { color: var(--c-white); }
.section__lead--white  { color: rgba(255, 255, 255, 0.85); opacity: 1; text-align: center; }

/* ── Site Header ─────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: var(--c-white);
  border-bottom: 1px solid var(--c-line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin-inline: auto;
height: auto;
}

/* ── Logo ──────────────────────────────────────────────────────── */
.site-header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  padding-top: 10px;
}

.site-header__logo-text {
  font-size: var(--text-md);
  font-weight: 800;
  color: var(--c-blue);
  letter-spacing: -0.02em;
  line-height: 1;
}

/* ── Hamburguesa ─────────────────────────────────────────────── */
.site-header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: var(--touch-min);
  height: var(--touch-min);
  border: none;
  background: none;
  cursor: pointer;
  padding: var(--space-8);
  border-radius: var(--radius-md);
  transition: background-color var(--transition);
  flex-shrink: 0;
}

.burger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--c-blue);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

/* Animación X cuando está abierto */
.site-header--menu-open .burger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header--menu-open .burger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.site-header--menu-open .burger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Navegación mobile ───────────────────────────────────────── */
.site-nav {
  position: fixed;
  inset: 100px 0 0 0;
  background-color: var(--c-white);
  overflow-y: auto;
  padding: var(--space-24) var(--space-20) var(--space-48);
  border-top: 1px solid var(--c-line);
  display: flex;
  flex-direction: column;
  gap: var(--space-32);
  z-index: var(--z-header);
  /* La transición la maneja el atributo [hidden] toggle en JS */
}

.site-nav[hidden] { display: none; }

.site-nav__list {
  display: flex;
  flex-direction: column;
}

.site-nav__link {
  display: flex;
  align-items: center;
  height: var(--touch-min);
  padding-inline: var(--space-8);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-line);
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition);
}

.site-nav__link:hover {
  color: var(--c-blue);
  background-color: var(--c-bg);
  text-decoration: none;
}

.site-nav__link--active,
.site-nav__link[aria-current="page"] {
  color: var(--c-blue);
  font-weight: 700;
  border-left: 3px solid var(--c-red);
  padding-left: calc(var(--space-8) - 3px);
}

.site-nav__cta {
  padding-block: var(--space-8);
}

/* ── Navegación desktop ──────────────────────────────────────── */
@media (min-width: 1100px) {
  .site-header__inner {
    height: 72px;
    padding-inline: var(--space-48);
  }

  .site-header__burger {
    display: none;
  }

  /* campus: estilos en bloque propio abajo */

  .site-nav {
    position: static;
    inset: auto;
    display: flex !important;
    flex-direction: row;
    align-items: center;
    gap: var(--space-8);
    padding: 0;
    margin-left: auto;
    border-top: none;
    background: none;
    overflow: visible;
  }

  .site-nav[hidden] {
    display: flex !important;
  }

  .site-nav__list {
    flex-direction: row;
    gap: 0;
    align-items: center;
  }

  .site-nav__link {
    height: 72px;
    padding-inline: var(--space-12);
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    border-bottom: none;
    border-radius: 0;
    position: relative;
  }

  .site-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--space-12);
    right: var(--space-12);
    height: 2px;
    background-color: var(--c-red);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
  }

  .site-nav__link:hover::after,
  .site-nav__link--active::after,
  .site-nav__link[aria-current="page"]::after {
    transform: scaleX(1);
  }

  .site-nav__link--active,
  .site-nav__link[aria-current="page"] {
    border-left: none;
    padding-left: var(--space-12);
    color: var(--c-blue);
  }

  .site-nav__cta {
    padding-block: 0;
    margin-left: var(--space-16);
  }
}

/* ── Campus (botón suave desktop) ─────────────────────────────── */
/* Mobile: se ve como un link más en el menú */
.site-nav__link--campus {
  font-weight: 700;
  color: var(--c-blue);
}

/* Desktop: se transforma en botón suave junto a los links */
@media (min-width: 1100px) {
  .site-nav__item--campus {
    margin-left: var(--space-8);
  }
  .site-nav__link--campus {
    height: auto;
    padding: 6px 14px;
    background-color: rgba(30, 58, 95, 0.07);
    border: 1px solid rgba(30, 58, 95, 0.18);
    border-bottom: 1px solid rgba(30, 58, 95, 0.18);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--c-blue);
    white-space: nowrap;
    transition: background-color var(--transition), border-color var(--transition);
  }
  .site-nav__link--campus:hover {
    background-color: rgba(30, 58, 95, 0.13);
    border-color: rgba(30, 58, 95, 0.35);
    color: var(--c-blue);
    text-decoration: none;
  }
  .site-nav__link--campus::after {
    display: none;
  }
}

/* ── Site Footer ─────────────────────────────────────────────── */
.site-footer {
  background-color: var(--c-blue);
  color: var(--c-white);
  padding-block: var(--space-48);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer a:hover {
  color: var(--c-white);
  text-decoration: underline;
}

.site-footer__grid {
  display: grid;
  gap: var(--space-32);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-48);
}

@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .site-footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-48);
  }
}

.site-footer__logo {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--c-white);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-8);
}

.site-footer__tagline {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.6);
  max-width: 36ch;
  line-height: var(--line-height-loose);
}

.site-footer__nav-title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-16);
}

.site-footer__nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.site-footer__nav li a {
  font-size: var(--text-sm);
}

.site-footer__contact p {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 0;
}

.site-footer__contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  min-width: 320px
}

.site-footer__contact-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-footer__contact-area {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}

.site-footer__contact-list a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.85);
  word-break: break-word;
}

.site-footer__bottom {
  padding-top: var(--space-32);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.site-footer__legal {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 0;
}

/* ── Main ────────────────────────────────────────────────────── */
main {
  min-height: 60vh;
}

/* ── Flex helpers ─────────────────────────────────────────────── */
.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-8   { gap: var(--space-8); }
.flex-gap-16  { gap: var(--space-16); }
.flex-wrap    { flex-wrap: wrap; }

/* ── Divider ─────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--c-line);
  margin-block: var(--space-32);
}