/* ---------- Theme tokens ---------- */
:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --color-bg: #ffffff;
  --color-bg-alt: #f6f7f9;
  --color-text: #1a1a1a;
  --color-text-muted: #55575c;
  --color-border: #e5e6e9;
  --color-card-bg: #ffffff;
  --color-card-shadow: rgba(20, 20, 20, 0.08);

  /* Bright brand orange: for backgrounds, borders, icons, large decorative use. */
  --color-accent: #ff9900;
  /* Darkened orange: passes WCAG AA (4.5:1) for body text/links on light backgrounds. */
  --color-accent-text: #a35300;
  --color-accent-shadow: rgba(255, 153, 0, 0.35);
  --color-focus: var(--color-accent-text);

  --radius: 10px;
  --shadow-sm: 0 2px 8px var(--color-card-shadow);
  --shadow-lg: 0 16px 32px var(--color-card-shadow);
  --transition: 200ms ease;
}

:root[data-theme="dark"] {
  --color-bg: #14171c;
  --color-bg-alt: #1b1f26;
  --color-text: #eceef0;
  --color-text-muted: #a7abb3;
  --color-border: #2a2f3a;
  --color-card-bg: #1b1f26;
  --color-card-shadow: rgba(0, 0, 0, 0.45);

  --color-accent: #ff9900;
  --color-accent-text: #ffb454;
  --color-accent-shadow: rgba(255, 153, 0, 0.25);
  --color-focus: var(--color-accent);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition), color var(--transition);
}

img { max-width: 100%; display: block; }

h1, h2, h3 { font-weight: 700; line-height: 1.25; }

a { color: var(--color-accent-text); }

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -100px;
  z-index: 100;
  background: var(--color-bg);
  color: var(--color-text);
  padding: 10px 16px;
  border-radius: var(--radius);
  border: 2px solid var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 8px;
}

/* Scroll-reveal */
.reveal, .reveal-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.is-visible, .reveal-item.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Navbar ---------- */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 var(--color-border);
  padding: 12px 0;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 20;
  backdrop-filter: saturate(180%) blur(8px);
  transition: background-color var(--transition), border-color var(--transition);
}

.container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 90%;
  max-width: 1140px;
  margin: 0 auto;
  gap: 16px;
}

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

.logo {
  max-width: 130px;
  border-radius: 6px;
}

.main-nav { display: flex; gap: 28px; }

.nav-link {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--color-accent);
  transition: right var(--transition);
}

.nav-link:hover { color: var(--color-accent-text); }
.nav-link:hover::after { right: 0; }

.navbar-tools {
  display: flex;
  align-items: center;
  gap: 16px;
}

.icon {
  width: 20px;
  height: 20px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text);
  cursor: pointer;
  transition: background-color var(--transition), transform var(--transition);
}

.theme-toggle:hover { transform: rotate(15deg); }

.icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: block; }

.language-switcher { display: flex; gap: 8px; }

.lang-option { display: block; opacity: 0.45; border-radius: 4px; }
.lang-option.active { opacity: 1; box-shadow: 0 0 0 2px var(--color-accent); }
.lang-option img { width: 22px; border-radius: 3px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

@media screen and (max-width: 860px) {
  .navbar .container { flex-wrap: wrap; }
  .nav-toggle { display: flex; order: 1; }
  .navbar-tools { order: 2; }
  .main-nav {
    order: 3;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .main-nav.is-open { max-height: 220px; }
  .main-nav .nav-link { padding: 12px 0; border-top: 1px solid var(--color-border); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  margin-top: 62px;
  height: 320px;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-bg svg { width: 100%; height: 100%; }

.flow-line {
  stroke-dasharray: 12 10;
  animation: flow 6s linear infinite;
}

.flow-line-2 { animation-duration: 7.5s; animation-direction: reverse; }
.flow-line-3 { animation-duration: 9s; }

@keyframes flow {
  to { stroke-dashoffset: -220; }
}

/* ---------- Main content ---------- */
.main-content {
  width: 90%;
  max-width: 1140px;
  margin: 50px auto;
  padding: 0 10px;
}

.wrapper {
  width: 90%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 40px 10px 0;
  text-align: center;
}

.eslogan {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text);
  text-align: center;
  margin: 0 0 40px;
}

.heading, .heading-acerca, .heading-contacto {
  font-size: 30px;
  color: var(--color-text);
  text-align: center;
  margin: 0 0 32px;
}

.main-content h2, .main-content h3 {
  color: var(--color-text);
  text-align: center;
  margin-bottom: 20px;
}

.main-content p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  text-align: justify;
}

.main-content ul {
  list-style-type: disc;
  padding-left: 40px;
  margin-bottom: 30px;
}

/* ---------- Servicios ---------- */
.servicios { text-align: center; }

.simulacion-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin: 0 0 60px;
  text-align: left;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 32px 28px;
  border-radius: var(--radius);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  text-decoration: none;
  color: var(--color-text-muted);
}

.card:hover, .card:focus-visible {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.main-content .title-card,
.main-content .title-card-sub {
  font-size: 21px;
  color: var(--color-accent-text);
  text-align: left;
  margin: 0;
}

.card .text {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-top: 12px;
  flex-grow: 1;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  color: var(--color-accent-text);
  font-weight: 700;
  text-decoration: none;
}

.card:hover .text-link { text-decoration: underline; }

@media screen and (max-width: 768px) {
  .simulacion-cards { grid-template-columns: 1fr; }
}

/* ---------- Acerca de ---------- */
.acerca {
  padding: 64px 0;
  background: var(--color-bg-alt);
  text-align: center;
  transition: background-color var(--transition);
}

.acerca-text {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.acerca-sub, .acerca-historia {
  max-width: 500px;
  margin: 0 auto;
  text-align: left;
}

.acerca .title-card {
  font-size: 22px;
  color: var(--color-accent-text);
  text-align: left;
  margin-bottom: 14px;
}

.text-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
}

.acerca-historia {
  grid-column: 1 / span 2;
  max-width: 900px;
  text-align: justify;
}

@media screen and (max-width: 768px) {
  .acerca-text { grid-template-columns: 1fr; }
  .acerca-historia { grid-column: 1; }
}

/* ---------- Contacto ---------- */
.contact-section {
  margin: 70px auto;
  padding: 0 20px;
  text-align: center;
}

.contacto-names {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-top: 30px;
}

.contact-item {
  max-width: 300px;
  text-align: center;
  padding: 28px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-card-bg);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }

.contact-icon {
  width: 32px;
  height: 32px;
  color: var(--color-accent);
  margin: 0 auto 12px;
}

.contact-item h3 {
  font-size: 20px;
  color: var(--color-accent-text);
  margin-bottom: 6px;
}

.contact-item p { color: var(--color-text-muted); margin: 4px 0; }
.contact-item a { color: var(--color-accent-text); font-weight: 600; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 20px;
  text-align: center;
  color: var(--color-text-muted);
}

.footer-link {
  margin: 0 10px;
  color: var(--color-accent-text);
  text-decoration: none;
  font-weight: 600;
}

.footer-link:hover { text-decoration: underline; }

.copyright {
  color: var(--color-text-muted);
  margin-top: 10px;
  font-size: 14px;
}

/* ---------- Protección de datos ---------- */
.responsable-titulo { font-size: 2em; margin-bottom: 10px; text-align: center; }
.nombre { font-size: 1.5em; font-weight: bold; margin: 5px 0; text-align: center; }
.direccion { font-size: 1em; margin: 5px 0; text-align: center; }
.correo { font-size: 1em; color: var(--color-accent-text); text-align: center; text-decoration: none; }
.correo:hover { text-decoration: underline; }