/* ==========================================================================
   Tren Ligero · MexicoTurismo.com.mx
   Hoja moderna del micro-sitio (sin Bootstrap ni jQuery). Mobile-first.
   ========================================================================== */

:root{
  --verde:#1f7a43;        /* verde Tren Ligero */
  --verde-osc:#155c32;
  --lima:#8bc34a;         /* acento light-rail */
  --tinta:#1b2a22;
  --texto:#30413a;
  --suave:#5b6b63;
  --linea:#e2e8e4;
  --fondo:#ffffff;
  --crema:#f4f8f5;
  --sombra:0 1px 2px rgba(16,40,28,.06),0 8px 24px rgba(16,40,28,.06);
  --radio:14px;
  --ancho:760px;
}

*,*::before,*::after{box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'Roboto',system-ui,-apple-system,Segoe UI,Arial,sans-serif;
  color:var(--texto);
  line-height:1.65;
  background:var(--fondo);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--verde-osc);text-decoration:none}
a:hover{text-decoration:underline}

.contenedor{width:100%;max-width:var(--ancho);margin:0 auto;padding:0 18px}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--verde);
  box-shadow:0 2px 10px rgba(0,0,0,.12);
}
.nav{
  max-width:1040px;margin:0 auto;padding:0 16px;
  display:flex;align-items:center;justify-content:space-between;
  min-height:60px;
}
.nav__brand{display:flex;align-items:center;gap:10px}
.nav__brand img{height:42px;width:auto}
.nav__brand b{color:#fff;font-size:1.05rem;font-weight:600;letter-spacing:.2px}
.nav__links{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav__links a{
  color:#eafaf0;font-weight:600;font-size:.95rem;
  padding:8px 14px;border-radius:999px;display:block;
}
.nav__links a:hover,.nav__links a[aria-current="page"]{
  background:rgba(255,255,255,.18);text-decoration:none;color:#fff;
}
.nav__toggle{
  display:none;background:transparent;border:1.5px solid rgba(255,255,255,.6);
  border-radius:8px;width:42px;height:38px;cursor:pointer;color:#fff;
  align-items:center;justify-content:center;
}
.nav__toggle svg{width:22px;height:22px}

@media (max-width:680px){
  .nav__toggle{display:inline-flex}
  .nav__links{
    position:absolute;top:60px;left:0;right:0;
    flex-direction:column;gap:0;background:var(--verde-osc);
    padding:6px 10px 12px;display:none;
  }
  .nav__links.abierto{display:flex}
  .nav__links a{padding:12px 14px;border-radius:8px}
  .nav__brand b{font-size:.98rem}
}

/* ---------- Hero ---------- */
.hero{background:var(--crema);border-bottom:1px solid var(--linea)}
.hero .contenedor{padding-top:26px;padding-bottom:24px}
.breadcrumb{font-size:.82rem;color:var(--suave);margin:0 0 10px}
.breadcrumb a{color:var(--suave)}
h1{
  font-size:1.9rem;line-height:1.2;color:var(--tinta);
  margin:.1rem 0 .5rem;font-weight:700;
}
.hero .lead{font-size:1.08rem;color:var(--suave);margin:0 0 18px;max-width:60ch}
.hero__img{border-radius:var(--radio);box-shadow:var(--sombra);width:100%;margin:0 auto}

/* ---------- Contenido ---------- */
main{padding:28px 0 10px}
main h2{
  font-size:1.4rem;color:var(--verde-osc);margin:2em 0 .5em;
  font-weight:700;line-height:1.25;
}
main h3{font-size:1.12rem;color:var(--tinta);margin:1.4em 0 .4em}
main p{margin:0 0 1.05rem}
main ul,main ol{margin:0 0 1.1rem;padding-left:1.2rem}
main li{margin:.3rem 0}
.foto-contenido{margin:1.4rem auto;text-align:center}
.foto-contenido img{border-radius:var(--radio);box-shadow:var(--sombra);margin:0 auto}
.foto-contenido figcaption{font-size:.85rem;color:var(--suave);margin-top:.5rem}

/* ---------- Datos rápidos ---------- */
.datos{
  background:var(--crema);border:1px solid var(--linea);
  border-radius:var(--radio);padding:18px 20px;margin:4px 0 8px;
}
.datos h2{margin:.1rem 0 .6rem;font-size:1.15rem;color:var(--tinta)}
.datos dl{display:grid;grid-template-columns:auto 1fr;gap:.35rem 1rem;margin:0}
.datos dt{color:var(--suave);font-weight:600}
.datos dd{margin:0;color:var(--tinta)}

/* ---------- Línea de estaciones ---------- */
.linea{list-style:none;margin:1rem 0 1.4rem;padding:0;position:relative;--lc:var(--verde);--lc2:var(--lima)}
.linea.l1{--lc:#d4232e;--lc2:#f0888f}
.linea.l2{--lc:#2e9e4f;--lc2:#8bd6a1}
.linea.l3{--lc:#c1177c;--lc2:#e87abe}
.linea::before{
  content:"";position:absolute;left:11px;top:10px;bottom:10px;width:4px;
  background:linear-gradient(var(--lc2),var(--lc));border-radius:4px;
}
.linea li{
  position:relative;padding:7px 0 7px 38px;font-weight:500;color:var(--tinta);
  margin:0;
}
.linea li::before{
  content:"";position:absolute;left:4px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;border-radius:50%;background:#fff;
  border:4px solid var(--lc);box-shadow:0 0 0 2px #fff;
}
.linea li.term::before{background:var(--lc);width:20px;height:20px;left:3px}
.linea li.term{font-weight:700}
.linea li .tag{
  display:inline-block;margin-left:8px;font-size:.72rem;font-weight:700;
  color:#fff;background:var(--lc);border-radius:999px;padding:2px 9px;vertical-align:middle;
}
/* etiqueta de línea */
.linea-badge{display:inline-flex;align-items:center;gap:8px;font-size:.85rem;font-weight:700;color:var(--suave);margin:.2rem 0}
.linea-badge .pip{width:14px;height:14px;border-radius:50%;background:var(--verde)}
.linea-badge.l1 .pip{background:#d4232e}
.linea-badge.l2 .pip{background:#2e9e4f}
.linea-badge.l3 .pip{background:#c1177c}
.linea-badge.l4 .pip{background:#e8821e}

/* ---------- Tabla ---------- */
.tabla{width:100%;border-collapse:collapse;margin:1rem 0 1.4rem;font-size:.97rem}
.tabla th,.tabla td{border:1px solid var(--linea);padding:10px 13px;text-align:left}
.tabla th{background:var(--crema);color:var(--tinta);font-weight:600}
.tabla tr:nth-child(even) td{background:#fafcfb}

/* ---------- Tarjetas hub ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:1.2rem 0 1.6rem}
.card{
  display:flex;flex-direction:column;gap:6px;
  border:1px solid var(--linea);border-radius:var(--radio);
  padding:18px;background:#fff;box-shadow:var(--sombra);
  color:var(--texto);transition:transform .15s ease,box-shadow .15s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(16,40,28,.12);text-decoration:none}
.card .ico{
  width:42px;height:42px;border-radius:10px;background:#e6f4ec;color:var(--verde-osc);
  display:flex;align-items:center;justify-content:center;
}
.card .ico svg{width:24px;height:24px}
.card b{color:var(--tinta);font-size:1.05rem}
.card span{font-size:.9rem;color:var(--suave)}
@media (max-width:680px){.cards{grid-template-columns:1fr}}

/* ---------- Caja de datos / aviso ---------- */
.nota{
  border-left:4px solid var(--lima);background:#f7fbf2;
  padding:12px 16px;border-radius:0 10px 10px 0;margin:1.2rem 0;color:var(--texto);
}

/* ---------- FAQ ---------- */
.faq{margin:1.4rem 0 .5rem}
.faq details{
  border:1px solid var(--linea);border-radius:10px;margin:.5rem 0;
  background:#fff;overflow:hidden;
}
.faq summary{
  cursor:pointer;padding:14px 16px;font-weight:600;color:var(--tinta);
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--verde);font-weight:400;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--linea)}
.faq .faq__a{padding:4px 16px 14px}
.faq .faq__a p{margin:.6rem 0 0}

/* ---------- AdSense ---------- */
.adsense-incontent{width:100%;max-width:700px;margin:22px auto;padding:6px 0;text-align:center;clear:both;overflow:hidden}

/* ---------- Botones ---------- */
.btn{
  display:inline-block;background:var(--verde);color:#fff;font-weight:600;
  padding:11px 20px;border-radius:999px;box-shadow:var(--sombra);
}
.btn:hover{background:var(--verde-osc);text-decoration:none;color:#fff}

/* ---------- Footer ---------- */
.site-footer{margin-top:34px;background:#357150;color:#eaf5ef;padding:26px 0}
.site-footer .contenedor{max-width:1040px}
.site-footer nav{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:10px}
.site-footer a{color:#ffffff;font-size:.92rem}
.site-footer a:hover{color:#eaf5ef}
.site-footer small{color:#c9e4d5;font-size:.82rem}

/* ---------- Utilidades ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}