/* ============================================
   GLOBAL STYLES — Human Buenos Aires
   Incluye: navbar, footer, botones, utilidades
   ============================================ */

/* ---- GOOGLE FONTS ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---- UTILIDADES ---- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-8);
}

.container--narrow {
  max-width: var(--max-w-narrow);
}

.section {
  padding-block: var(--space-32);
}

.section--sm {
  padding-block: var(--space-20);
}

.text-center { text-align: center; }

.label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  display: block;
}

.section__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--space-12);
}

/* ---- BOTONES ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--r);
  transition: var(--t);
  cursor: pointer;
  white-space: nowrap;
}

.btn--primary {
  background: var(--text);
  color: var(--bg);
}

.btn--primary:hover {
  background: #cccccc;
}

.btn--outline {
  border: 1px solid var(--border-hover);
  color: var(--text);
}

.btn--outline:hover {
  border-color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.btn--ghost {
  color: var(--text-secondary);
}

.btn--ghost:hover {
  color: var(--text);
}

/* ---- NAVBAR ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  transition: background var(--t-slow), backdrop-filter var(--t-slow);
}

.nav.scrolled,
.nav.solid {
  background: #090909;
  border-bottom: 1px solid var(--border);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--space-8);
}

.nav__logo img {
  height: 36px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--t);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width var(--t);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

/* Hamburger */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.nav__burger span {
  display: block;
  height: 1.5px;
  background: var(--text);
  transition: var(--t);
  transform-origin: center;
}

.nav__burger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__burger.open span:nth-child(2) {
  opacity: 0;
}
.nav__burger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav__burger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #090909;
    z-index: 999;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .nav__links.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .nav__link {
    font-size: 1.2rem;
    letter-spacing: 0.2em;
  }
}

/* ---- FOOTER ---- */
.footer {
  border-top: 1px solid var(--border);
  padding-block: var(--space-20) var(--space-12);
  margin-top: var(--space-32);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.footer__brand img {
  height: 44px;
  width: auto;
  margin-bottom: var(--space-4);
}

.footer__tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: var(--space-4);
}

.footer__heading {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.footer__links a,
.footer__social a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  transition: color var(--t);
}

.footer__links a:hover,
.footer__social a:hover {
  color: var(--text);
}

.footer__bottom {
  border-top: 1px solid var(--border);
  padding-top: var(--space-6);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer__brand-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.footer__icon-link {
  color: var(--text-muted);
  transition: color var(--t);
  display: flex;
  align-items: center;
}

.footer__icon-link:hover {
  color: var(--text);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .container {
    padding-inline: var(--space-5);
  }

  .section {
    padding-block: var(--space-20);
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- PAGE HEADER (páginas internas) ---- */
.page-header {
  padding-top: calc(var(--nav-h) + var(--space-20));
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--border);
}

.page-header .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-header__title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.page-header__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
}

/* ---- LOADING SPINNER ---- */
.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-inline: auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- DIVIDER ---- */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin-block: var(--space-16);
}