/* ==========================================================================
   CONVIVE — Layout estructural
   Navbar, Footer, grillas de secciones
   ========================================================================== */

/* ------------------------------------ Navbar ------------------------------ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding-block: var(--sp-md);
  transition: padding var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.navbar.is-scrolled {
  padding-block: var(--sp-xs);
  background: rgba(255, 255, 255, 0.72);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--c-border-soft);
  box-shadow: var(--shadow-xs);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
}

.brand {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 28px;
  width: auto;
  display: block;
}

.brand-logo--lg {
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-lg);
}

.nav-links a {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--c-ink-700);
  position: relative;
  padding-block: 0.25rem;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--g-brand);
  transition: width var(--dur-base) var(--ease-out);
}

.nav-links a:hover::after { width: 100%; }
.nav-links a:hover { color: var(--c-ink-900); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  background: var(--c-white);
}

.nav-toggle svg { width: 18px; height: 18px; }

@media (max-width: 920px) {
  .nav-links { display: none; }
  .nav-actions .btn-secondary,
  .nav-actions .btn-primary { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* Mobile menu drawer */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(251, 252, 254, 0.98);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  padding: var(--sp-md) var(--container-pad) var(--sp-xl);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}

.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.mobile-menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--sp-2xl);
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.mobile-menu nav a {
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  color: var(--c-ink-900);
}

.mobile-menu-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

/* ------------------------------------ Footer ------------------------------ */
.site-footer {
  position: relative;
  background: var(--c-ink-900);
  color: var(--c-ink-300);
  padding-block: var(--sp-2xl) var(--sp-lg);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 20% 0%, rgba(91,127,239,0.25), transparent 60%),
              radial-gradient(50% 60% at 90% 10%, rgba(46,196,182,0.18), transparent 60%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--sp-xl);
  padding-bottom: var(--sp-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

@media (max-width: 860px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-brand p {
  color: var(--c-ink-300);
  margin-top: var(--sp-sm);
  max-width: 320px;
}

.footer-col h4 {
  color: var(--c-white);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-md);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.footer-col a {
  font-size: var(--fs-sm);
  color: var(--c-ink-300);
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-col a:hover { color: var(--c-white); }

.footer-social {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-md);
}

.footer-social a {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.footer-social a:hover {
  background: var(--g-brand);
  transform: translateY(-3px);
}

.footer-social svg { width: 17px; height: 17px; }

.footer-bottom {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding-top: var(--sp-lg);
  font-size: var(--fs-xs);
  color: var(--c-ink-400);
  flex-wrap: wrap;
}

.footer-bottom a:hover { color: var(--c-white); }