/* ─── Base & Reset ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

::selection {
  background: #5FB8A8;
  color: #0A2540;
}

/* ─── Animations ─── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation: fadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ─── Scroll reveal ─── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ─── Navbar ─── */
#navbar {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
  background: rgba(232, 237, 244, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(10, 37, 64, 0.06);
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #5FB8A8;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* ─── Mobile menu ─── */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

#mobile-menu.close {
  opacity: 0;
  pointer-events: none;
}

.menu-line:last-child {
  width: 1.4rem;
}

body.menu-open {
  overflow: hidden;
}

/* ─── Hero asymmetric layout ─── */
#inicio {
  position: relative;
}

/* ─── Custom scrollbar ─── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #E8EDF4;
}

::-webkit-scrollbar-thumb {
  background: #9DB4CC;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #5FB8A8;
}

/* ─── Image hover container ─── */
.group:hover .group-hover\:scale-105 {
  transform: scale(1.05);
}

/* ─── Select arrow ─── */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239DB4CC' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  appearance: none;
  -webkit-appearance: none;
}

/* ─── Mobile responsive ─── */
@media (max-width: 767px) {
  .font-serif {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  section {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .max-w-7xl {
    padding-left: 0;
    padding-right: 0;
  }
}