@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600&display=swap');

/* ===== Variables fluidas ===== */
:root {
  --header-h: 110px;
  --space: clamp(16px, 2.5vw, 40px);
  --space-lg: clamp(36px, 6vw, 80px);
  --card-gap: clamp(16px, 3vw, 40px);
  --card-radius: 20px;
  --text: #2e2e2e;
  --brand: #3c4e79;
  --brand-weak: #cbd5e0;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box
}

html,
body {
  height: 100%;
  scroll-behavior: smooth
}

body {
  font-family: 'Poppins', sans-serif;
  background: #f5f5f5;
  color: var(--text);
  line-height: 1.8;
  font-size: 16px;
  /* Compensa header fijo solo con la barra superior (no el drawer) */
  padding-top: var(--header-h);
}

.layout-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid rgba(60, 78, 121, .15);
  box-shadow: 0 2px 6px rgba(0, 0, 0, .05);
  z-index: 3000;
  /* SUBIDO para estar por encima del overlay */
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space);
}

.logo {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 600;
  color: var(--brand);
  user-select: none
}

/* ===== NAV ===== */
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0
}

.main-nav a {
  text-decoration: none;
  color: var(--brand);
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: clamp(.9rem, 1.8vw, .95rem);
  transition: background-color .25s ease, color .25s ease;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--brand-weak);
  color: #1a1a1a
}

/* Botón hamburguesa */
.nav-toggle {
  display: none;
  /* visible solo en móvil */
  position: relative;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  cursor: pointer;
  border-radius: 10px;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--brand)
}

.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  display: block;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--brand);
  transition: transform .3s ease, opacity .3s ease, top .3s ease;
}

.nav-toggle-bar {
  top: 50%
}

.nav-toggle-bar::before {
  top: -8px
}

.nav-toggle-bar::after {
  top: 8px
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar {
  background: transparent
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before {
  top: 0;
  transform: translateX(-50%) rotate(45deg)
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after {
  top: 0;
  transform: translateX(-50%) rotate(-45deg)
}

.logo_link {
  text-decoration: none;
  color: inherit;
  display: inline-block;
}

/* Drawer móvil (off-canvas) */
.main-nav[data-drawer] {
  /* Desktop por defecto visible en línea; móvil se redefine en media query */
}

/* Overlay (por debajo del header/drawer, por encima del contenido) */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .35);
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
  z-index: 2900;
  /* DEBAJO del header (3000) y del drawer (3100) */
}

body.menu-open .nav-overlay {
  opacity: 1;
  pointer-events: auto
}

/* Bloquea scroll del body al abrir menú */
body.menu-open {
  overflow: hidden
}

/* ===== CONTENEDOR PRINCIPAL ===== */
.container {
  margin-top: 0
}

/* ===== HERO CARDS ===== */
.hero-cards {
  background: #3665ab;
  padding: var(--space-lg) var(--space);
  box-shadow: 0 10px 40px rgba(0, 0, 0, .06);
}

.card-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--card-gap);
  justify-content: space-between
}

.card {
  background: linear-gradient(to bottom right, #fff, #f0f2f5);
  border: 1px solid #e6e6e6;
  border-radius: var(--card-radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .04);
  overflow: hidden;
  flex: 1 1 calc(33% - (var(--card-gap) - 4px));
  min-width: 280px;
  max-width: 100%;
  cursor: pointer;
  transition: transform .4s ease, box-shadow .4s ease, opacity .4s ease, translate .4s ease;
  opacity: 0;
  translate: 0 40px;
}

.card.animate-in {
  opacity: 1;
  translate: 0 0
}

.card:hover {
  transform: translateY(-10px) scale(1.03);
  box-shadow: 0 15px 40px rgba(0, 0, 0, .15)
}

.card img {
  width: 100%;
  height: clamp(180px, 22vw, 220px);
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}

.card:hover img {
  transform: scale(1.06)
}

.card h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  margin: 20px 20px 10px;
  color: var(--brand)
}

.card p {
  margin: 0 20px 20px;
  color: #555;
  min-height: 56px
}

.btn {
  display: inline-block;
  margin: 0 20px 30px;
  padding: 12px 24px;
  background: var(--brand);
  color: #fff;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  transition: transform .2s ease, opacity .2s ease;
}

.btn:hover {
  transform: scale(1.05)
}

/* Mantener hueco del h2 eliminado */
.espacio-titulo {
  height: 30px
}

/* ===== SOBRE NOSOTROS (Parallax seguro) ===== */
.sobre-nosotros {
  background-image: url('../images/fondo.jpg');
  background-attachment: fixed;
  /* se desactiva en móvil */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  color: #fff;
  padding: clamp(80px, 12vw, 120px) var(--space);
  text-align: center;
  box-shadow: inset 0 0 0 2000px rgba(60, 78, 121, .6);
}

.sobre-nosotros p {
  max-width: 820px;
  margin: auto;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  line-height: 2
}

/* Offset de anclas bajo header fijo */
section {
  scroll-margin-top: calc(var(--header-h) + 10px)
}

/* ===== FOOTER ===== */
.site-footer {
  background: #2e2e2e;
  color: #ddd;
  text-align: center;
  padding: 60px 0;
  font-size: 1rem;
  margin-top: auto
}

/* ===== ACCESIBILIDAD ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto
  }
}

/* ===== BREAKPOINTS ===== */

/* <= 1200 */
@media (max-width:1200px) {
  .header-container {
    padding: 0 var(--space)
  }

  .card {
    flex: 1 1 calc(50% - var(--card-gap))
  }
}

/* <= 992: activa drawer, compácta header */
@media (max-width:992px) {
  :root {
    --header-h: 96px;
  }

  body {
    padding-top: var(--header-h)
  }

  /* Muestra hamburguesa */
  .nav-toggle {
    display: inline-block
  }

  /* Drawer: blanco, texto negro, por encima de todo y de altura completa */
  .main-nav[data-drawer] {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    /* altura completa */
    width: min(85vw, 360px);
    background: #ffffff;
    /* fondo blanco */
    color: #111;
    /* texto negro */
    padding-top: var(--header-h);
    box-shadow: -12px 0 36px rgba(0, 0, 0, .18);
    transform: translateX(100%);
    transition: transform .3s ease;
    z-index: 3100;
    /* POR ENCIMA del header y del overlay */
  }

  body.menu-open .main-nav[data-drawer] {
    transform: translateX(0)
  }

  /* Lista vertical y scrolleable dentro del cajón */
  .main-nav ul {
    flex-direction: column;
    gap: 6px;
    padding: 16px 20px;
    max-height: calc(100vh - var(--header-h) - 16px);
    overflow: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Links negros con hover suave */
  .main-nav a {
    display: block;
    padding: 14px 12px;
    border-radius: 10px;
    font-size: 1rem;
    color: #111;
    /* texto negro */
    background: transparent;
  }

  .main-nav a:hover,
  .main-nav a.active {
    background: rgba(0, 0, 0, 0.06);
    /* resalta sin perder el look */
    color: #111;
  }

  /* Oculta nav inline en desktop para que solo exista el drawer en móvil */
  .site-header .main-nav:not([data-drawer]) {
    display: none
  }
}

/* <= 768: ajustes extra */
@media (max-width:768px) {
  :root {
    --header-h: 88px;
  }

  body {
    padding-top: var(--header-h)
  }

  .header-container {
    gap: 10px
  }

  .card-grid {
    flex-direction: column;
    align-items: stretch
  }

  .card {
    flex: 1 1 100%
  }

  .card img {
    height: 200px
  }

  /* Parallax off en móvil para rendimiento y compatibilidad iOS */
  .sobre-nosotros {
    background-attachment: scroll
  }
}

/* <= 480 */
@media (max-width:480px) {
  :root {
    --header-h: 80px;
  }

  body {
    padding-top: var(--header-h)
  }

  .logo {
    font-size: 1.2rem
  }

  .hero-cards {
    padding: 32px 16px
  }

  .card h3 {
    margin: 16px 16px 8px
  }

  .card p {
    margin: 0 16px 16px;
    min-height: auto
  }

  .btn {
    margin: 0 16px 24px;
    padding: 10px 16px
  }

  .espacio-titulo {
    height: 22px
  }
}