/* ==========================================================================
   FC Transporte — Landing Page
   Sistema de diseño: Elite Mobility Framework (Design/DESIGN.md)
   ========================================================================== */

:root {
  /* Colores */
  --primary: #00152f;
  --primary-container: #052a50;
  --on-primary: #ffffff;
  --secondary: #00658d;
  --secondary-fixed: #c6e7ff;
  --secondary-fixed-dim: #82cfff;
  --gold: #cea62c;
  --surface: #f8f9ff;
  --surface-container-low: #eff4ff;
  --surface-lowest: #ffffff;
  --on-surface: #0b1c30;
  --on-surface-variant: #43474e;
  --outline-variant: #c3c6cf;
  --whatsapp: #25d366;
  --whatsapp-dark: #1eb857;
  --error: #ba1a1a;

  /* Radios */
  --radius-sm: 8px;
  --radius-lg: 20px;

  /* Sombras */
  --shadow-card: 0px 10px 30px rgba(5, 42, 80, 0.05);
  --shadow-card-hover: 0px 15px 40px rgba(5, 42, 80, 0.08);

  /* Layout */
  --container-max: 1280px;
  --gutter: 24px;
  --margin-x: 48px;
  --section-y: 64px;
  --header-h: 80px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
  color: var(--on-surface);
  background-color: var(--surface);
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

ul, ol { padding: 0; list-style: none; }

button { font: inherit; cursor: pointer; }

h1, h2, h3 { color: var(--primary); text-wrap: balance; }

h1 {
  font-size: 36px;
  line-height: 42px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 24px;
  line-height: 32px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 24px;
  line-height: 32px;
  font-weight: 600;
}

:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Enlace de salto al contenido (visible solo con teclado) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 200;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  background-color: var(--primary);
  color: #ffffff;
  font-size: 14px;
  font-weight: 500;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 16px;
  outline-color: var(--secondary-fixed-dim);
}

/* ---------- Utilidades ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--margin-x);
}

.container-narrow { max-width: 800px; }

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

.section-alt { background-color: var(--surface-container-low); }

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.section-head .eyebrow { display: block; margin-bottom: 4px; }

.eyebrow {
  font-size: 12px;
  line-height: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--secondary);
}

.grid { display: grid; gap: var(--gutter); }

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.icon-sm { width: 16px; height: 16px; }
.icon-xl { width: 40px; height: 40px; color: var(--secondary); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 32px;
  border: 0;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-align: center;
  transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-lg { min-height: 56px; }

.btn-sm { min-height: 44px; padding: 10px 20px; }

.btn-block { width: 100%; }

.btn-whatsapp {
  background-color: var(--whatsapp);
  color: #ffffff;
  box-shadow: var(--shadow-card);
}

.btn-whatsapp:hover { background-color: var(--whatsapp-dark); transform: translateY(-2px); }

.btn-ghost {
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #ffffff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-ghost:hover { background-color: rgba(255, 255, 255, 0.16); }

.btn-light {
  background-color: #ffffff;
  color: var(--primary);
}

.btn-light:hover { background-color: var(--secondary-fixed); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--header-h);
}

.logo {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
  white-space: nowrap;
  transition: color 0.3s ease;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: inline-block;
  padding: 8px 12px;
  font-size: 14px;
  line-height: 20px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: rgba(255, 255, 255, 0.85);
  transition: color 0.2s ease;
}

.nav-link:hover { color: #ffffff; }

.nav-cta { min-height: 44px; padding: 8px 24px; }

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: #ffffff;
}

.menu-toggle .icon { width: 26px; height: 26px; }
.menu-toggle .icon-close { display: none; }

/* Estado con scroll: fondo sólido */
.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.site-header.scrolled .logo { color: var(--primary); }

.site-header.scrolled .nav-link { color: var(--on-surface-variant); }
.site-header.scrolled .nav-link:hover { color: var(--primary); }

.site-header.scrolled .menu-toggle { color: var(--primary); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--header-h) + 40px) 48px;
  overflow: hidden;
  background-color: var(--primary);
}

.hero-media { position: absolute; inset: 0; }

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(0, 21, 47, 0.92) 0%, rgba(0, 21, 47, 0.55) 55%, rgba(0, 21, 47, 0.25) 100%);
}

.hero-content { position: relative; z-index: 1; width: 100%; }

.hero h1 {
  max-width: 640px;
  color: #ffffff;
  margin-bottom: 24px;
}

.hero-lead {
  max-width: 560px;
  font-size: 18px;
  line-height: 28px;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-trust li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  line-height: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
}

.hero-trust .icon { color: var(--secondary-fixed-dim); }

/* ---------- Tarjetas de servicios ---------- */
.card {
  background-color: var(--surface-lowest);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

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

.service-card .icon-xl { margin-bottom: 16px; }

.service-card h3 {
  font-size: 20px;
  line-height: 28px;
  margin-bottom: 8px;
}

.service-card p {
  color: var(--on-surface-variant);
  margin-bottom: 16px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 44px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--primary);
}

.card-link:hover { color: var(--secondary); }

.card-link .icon { transition: transform 0.2s ease; }
.card-link:hover .icon { transform: translateX(4px); }

/* ---------- Destinos ---------- */
.dest-card {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background-color: var(--primary-container);
}

.dest-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.dest-card:hover img { transform: scale(1.05); }

.dest-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 21, 47, 0.9) 0%, rgba(0, 21, 47, 0.25) 55%, transparent 100%);
}

.dest-info {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.dest-info h3 { color: #ffffff; }

.dest-card .btn { position: relative; z-index: 1; }

/* ---------- Por qué elegir ---------- */
.feature { padding: 16px 8px; }

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--primary-container);
  color: #ffffff;
  margin-bottom: 16px;
}

.feature h3 {
  font-size: 18px;
  line-height: 26px;
  margin-bottom: 8px;
}

.feature p { color: var(--on-surface-variant); }

/* ---------- Formulario de cotización ---------- */
.section-quote {
  background-color: var(--primary);
  color: var(--on-primary);
}

.quote-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: center;
}

.quote-info h2 {
  color: #ffffff;
  font-size: 32px;
  line-height: 40px;
  margin-bottom: 16px;
}

.quote-info > p {
  font-size: 18px;
  line-height: 28px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}

.quote-contact { display: grid; gap: 16px; }

.quote-contact li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
}

.quote-contact .icon { color: var(--secondary-fixed-dim); }

.quote-contact a:hover { text-decoration: underline; }

.quote-form {
  background-color: var(--surface-lowest);
  color: var(--on-surface);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card-hover);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.field-full { grid-column: 1 / -1; }

.field { min-width: 0; }

.field label {
  display: block;
  font-size: 12px;
  line-height: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
  margin-bottom: 6px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 56px;
  padding: 14px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  background-color: var(--surface);
  font: inherit;
  color: var(--on-surface);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field textarea { min-height: 88px; resize: vertical; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(0, 101, 141, 0.15);
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: var(--error); }

.field-error {
  display: block;
  min-height: 18px;
  font-size: 12px;
  line-height: 18px;
  color: var(--error);
}

.form-note {
  margin-top: 12px;
  font-size: 12px;
  line-height: 18px;
  text-align: center;
  color: var(--on-surface-variant);
}

/* ---------- FAQ ---------- */
.accordion { display: grid; gap: 16px; }

.accordion-item {
  background-color: var(--surface-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.accordion-heading { margin: 0; }

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  min-height: 56px;
  padding: 20px 24px;
  border: 0;
  background: transparent;
  text-align: left;
  font-size: 18px;
  line-height: 26px;
  font-weight: 600;
  color: var(--primary);
  border-radius: var(--radius-lg);
}

.icon-chevron { transition: transform 0.25s ease; }

.accordion-trigger[aria-expanded="true"] .icon-chevron { transform: rotate(180deg); }

.accordion-panel { padding: 0 24px 20px; }

.accordion-panel p { color: var(--on-surface-variant); }

/* ---------- CTA final ---------- */
.final-cta { background-color: var(--surface); }

.final-cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.final-cta h2 {
  font-size: 32px;
  line-height: 40px;
  max-width: 560px;
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--primary);
  color: rgba(255, 255, 255, 0.75);
  padding-top: var(--section-y);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--gutter);
}

.logo-footer { font-size: 20px; display: inline-block; margin-bottom: 12px; }

.footer-brand p { font-size: 14px; line-height: 22px; max-width: 300px; }

.footer-col h2 {
  color: #ffffff;
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col address { font-style: normal; }

.footer-col ul { display: grid; gap: 10px; font-size: 14px; }

.footer-col a { transition: color 0.2s ease; }
.footer-col a:hover { color: #ffffff; }

.footer-bottom {
  margin-top: 48px;
  padding-block: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

/* ---------- Animación de aparición ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }

  h1 { font-size: 48px; line-height: 56px; }
  h2 { font-size: 32px; line-height: 40px; }
}

@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1023px) {
  :root { --margin-x: 24px; }

  .quote-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .quote-info { text-align: center; }
  .quote-contact { justify-items: center; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  :root {
    --margin-x: 20px;
    --section-y: 48px;
    --header-h: 64px;
  }

  .grid { grid-template-columns: 1fr; }

  /* Carrusel de destinos: una card, desplazamiento lateral */
  .destinations-grid {
    position: relative;
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
  }

  .destinations-grid::-webkit-scrollbar { display: none; }

  .destinations-grid .dest-card {
    flex: 0 0 100%;
    scroll-snap-align: start;
  }

  /* Menú móvil */
  .menu-toggle { display: inline-flex; }

  .main-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 16px var(--margin-x) 24px;
    background-color: #ffffff;
    box-shadow: var(--shadow-card-hover);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s;
  }

  .main-nav.open {
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }

  .nav-link {
    display: block;
    padding: 14px 8px;
    color: var(--on-surface);
    border-bottom: 1px solid var(--surface-container-low);
  }

  .main-nav .nav-cta { margin-top: 12px; }

  /* Cuando el menú está abierto sobre el hero (header transparente) */
  .site-header.menu-open { background-color: var(--primary); }
  .site-header.menu-open.scrolled { background-color: rgba(255, 255, 255, 0.96); }
  .site-header.menu-open .menu-toggle .icon-menu { display: none; }
  .site-header.menu-open .menu-toggle .icon-close { display: block; }

  /* Hero móvil */
  .hero { align-items: flex-end; }

  .hero-overlay {
    background: linear-gradient(to top, rgba(0, 21, 47, 0.95) 0%, rgba(0, 21, 47, 0.6) 60%, rgba(0, 21, 47, 0.35) 100%);
  }

  .hero-actions .btn { flex: 1 1 100%; }

  .hero-trust {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 16px;
    margin-top: 32px;
    padding-top: 24px;
  }

  .quote-form { padding: 24px 20px; }
  .form-grid { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- Movimiento reducido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal { opacity: 1; transform: none; }
}