/* ==========================================================
   Talca Frenos — hoja de estilos
   ========================================================== */
:root {
  --azul: #164d92;
  --azul-oscuro: #0e3566;
  --azul-claro: #317ee0;
  --rojo: #d62828;
  --texto: #222;
  --texto-suave: #555;
  --gris-fondo: #f3f5f8;
  --blanco: #fff;
  --radio: 8px;
  --sombra: 0 4px 18px rgba(14, 53, 102, .10);
  --ancho: 1140px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Open Sans", Arial, sans-serif;
  color: var(--texto);
  background: var(--blanco);
  line-height: 1.6;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul); }
h1, h2, h3 { line-height: 1.25; color: var(--azul-oscuro); margin: 0 0 .6em; }
.contenedor { width: 100%; max-width: var(--ancho); margin: 0 auto; padding: 0 16px; }

/* ---------- Barra superior ---------- */
.topbar {
  background: var(--azul-oscuro);
  color: #dfe8f5;
  font-size: .875rem;
}
.topbar .contenedor {
  display: flex; flex-wrap: wrap; gap: 4px 24px;
  justify-content: space-between; align-items: center;
  padding-top: 6px; padding-bottom: 6px;
}
.topbar a { color: #fff; text-decoration: none; font-weight: 600; }
.topbar a:hover { text-decoration: underline; }

/* ---------- Cabecera / navegación ---------- */
.cabecera {
  background: var(--blanco);
  border-bottom: 3px solid var(--azul);
  position: sticky; top: 0; z-index: 50;
}
.cabecera .contenedor {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 84px; gap: 16px;
}
.logo img { width: 300px; max-width: 62vw; }
.nav-toggle { display: none; }
.nav-boton { display: none; cursor: pointer; padding: 10px; }
.nav-boton span,
.nav-boton span::before,
.nav-boton span::after {
  display: block; width: 26px; height: 3px; background: var(--azul); border-radius: 2px;
  position: relative; transition: .2s;
}
.nav-boton span::before, .nav-boton span::after { content: ""; position: absolute; }
.nav-boton span::before { top: -8px; }
.nav-boton span::after { top: 8px; }

.menu { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.menu a {
  display: block; padding: 10px 16px; text-decoration: none;
  font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
  color: var(--texto); border-radius: var(--radio); font-size: .92rem;
}
.menu a:hover { background: var(--gris-fondo); color: var(--azul); }
.menu a[aria-current="page"] { color: var(--azul); box-shadow: inset 0 -3px 0 var(--azul); border-radius: 0; }

@media (max-width: 760px) {
  .nav-boton { display: block; }
  .menu {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; background: var(--blanco);
    border-bottom: 3px solid var(--azul); box-shadow: var(--sombra);
    max-height: 0; overflow: hidden; transition: max-height .25s ease;
  }
  .menu a { padding: 14px 16px; border-radius: 0; border-top: 1px solid #eee; }
  .menu a[aria-current="page"] { box-shadow: inset 4px 0 0 var(--azul); }
  .nav-toggle:checked ~ .menu { max-height: 320px; }
}

/* ---------- Hero ---------- */
.hero {
  background: var(--azul) linear-gradient(135deg, var(--azul-oscuro), var(--azul) 60%, var(--azul-claro));
  color: #fff;
}
.hero .contenedor {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: center;
  padding-top: 48px; padding-bottom: 48px;
}
.hero h1 { color: #fff; font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: .3em; }
.hero .lema { font-size: 1.35rem; font-style: italic; opacity: .95; margin: 0 0 1em; }
.hero p { margin: 0 0 1.5em; max-width: 520px; }
.hero-img img { border-radius: var(--radio); box-shadow: 0 10px 30px rgba(0,0,0,.3); width: 100%; }
@media (max-width: 760px) {
  .hero .contenedor { grid-template-columns: 1fr; padding-top: 32px; padding-bottom: 32px; }
}

/* ---------- Encabezado de página interior ---------- */
.titulo-pagina {
  background: linear-gradient(135deg, var(--azul-oscuro), var(--azul));
  color: #fff; padding: 40px 0;
}
.titulo-pagina h1 { color: #fff; margin: 0; font-size: clamp(1.6rem, 3.5vw, 2.3rem); }
.titulo-pagina p { margin: .3em 0 0; opacity: .9; }

/* ---------- Botones ---------- */
.boton {
  display: inline-block; background: var(--rojo); color: #fff;
  padding: 12px 26px; border-radius: 40px; font-weight: 700;
  text-decoration: none; border: 0; cursor: pointer; font-size: 1rem;
  font-family: inherit; transition: transform .15s, background .15s;
}
.boton:hover { background: #b51f1f; transform: translateY(-1px); }
.boton-azul { background: var(--azul); }
.boton-azul:hover { background: var(--azul-oscuro); }
.boton-blanco { background: #fff; color: var(--azul); }
.boton-blanco:hover { background: #e8eef7; }

/* ---------- Secciones ---------- */
.seccion { padding: 56px 0; }
.seccion-gris { background: var(--gris-fondo); }
.centrado { text-align: center; }
.intro { max-width: 760px; margin: 0 auto 2em; color: var(--texto-suave); font-size: 1.08rem; }

/* ---------- Tarjetas de servicio ---------- */
.tarjetas { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.tarjeta {
  background: #fff; border-radius: var(--radio); box-shadow: var(--sombra);
  overflow: hidden; display: flex; flex-direction: column; text-decoration: none; color: inherit;
  transition: transform .2s, box-shadow .2s;
}
.tarjeta:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(14,53,102,.18); }
.tarjeta img { width: 100%; height: 190px; object-fit: cover; background: #dde4ee; }
.tarjeta-cuerpo { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.tarjeta h3 { margin-bottom: .4em; }
.tarjeta p { margin: 0 0 1em; color: var(--texto-suave); flex: 1; }
.tarjeta .mas { color: var(--azul); font-weight: 700; }
@media (max-width: 900px) { .tarjetas { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .tarjetas { grid-template-columns: 1fr; } }

/* ---------- Franja CTA ---------- */
.cta { background: var(--azul); color: #fff; padding: 40px 0; }
.cta .contenedor { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; }
.cta h2 { color: #fff; margin: 0; }
.cta p { margin: .2em 0 0; opacity: .9; }

/* ---------- Dos columnas ---------- */
.dos-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.dos-col img { border-radius: var(--radio); box-shadow: var(--sombra); }
@media (max-width: 760px) { .dos-col { grid-template-columns: 1fr; } }

/* ---------- Listas con check ---------- */
.lista-check { list-style: none; padding: 0; margin: 0 0 1.5em; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; }
.lista-check li { padding-left: 28px; position: relative; }
.lista-check li::before {
  content: ""; position: absolute; left: 0; top: .45em; width: 16px; height: 16px;
  border-radius: 50%; background: var(--azul);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Ccircle cx='8' cy='8' r='8'/%3E%3C/svg%3E");
}
.lista-check li::after {
  content: ""; position: absolute; left: 5px; top: calc(.45em + 4px); width: 6px; height: 4px;
  border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(-45deg);
}
@media (max-width: 500px) { .lista-check { grid-template-columns: 1fr; } }

/* ---------- Galería ---------- */
.galeria { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.galeria figure { margin: 0; background: #fff; border-radius: var(--radio); box-shadow: var(--sombra); overflow: hidden; }
.galeria img { width: 100%; height: 180px; object-fit: contain; padding: 12px; background: #fff; }
.galeria figcaption { padding: 8px 12px 12px; font-weight: 600; text-align: center; font-size: .95rem; }
@media (max-width: 760px) { .galeria { grid-template-columns: 1fr 1fr; } }

/* ---------- Contacto ---------- */
.info-contacto { list-style: none; padding: 0; margin: 0 0 1.5em; }
.info-contacto li { margin-bottom: .9em; }
.info-contacto strong { display: block; color: var(--azul-oscuro); }
.horario { background: var(--gris-fondo); border-left: 4px solid var(--azul); padding: 14px 18px; border-radius: 0 var(--radio) var(--radio) 0; margin-bottom: 1.5em; }
.horario p { margin: .2em 0; }
.mapa { width: 100%; aspect-ratio: 16 / 10; border: 0; border-radius: var(--radio); box-shadow: var(--sombra); }

.formulario { background: #fff; padding: 28px; border-radius: var(--radio); box-shadow: var(--sombra); }
.formulario label { display: block; font-weight: 600; margin-bottom: 4px; }
.formulario input, .formulario textarea {
  width: 100%; padding: 11px 13px; border: 1px solid #cfd6e0; border-radius: 6px;
  font: inherit; margin-bottom: 16px; background: #fbfcfe;
}
.formulario input:focus, .formulario textarea:focus { outline: 2px solid var(--azul-claro); border-color: transparent; }
.formulario textarea { min-height: 140px; resize: vertical; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.aviso { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-weight: 600; }
.aviso-ok { background: #e3f5e8; color: #1c6b34; }
.aviso-error { background: #fde8e8; color: #9b1c1c; }
[hidden] { display: none !important; }

/* ---------- Pie ---------- */
.pie { background: #0b2547; color: #c9d5e6; padding: 44px 0 0; font-size: .95rem; }
.pie .contenedor { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; }
.pie h3 { color: #fff; font-size: 1.05rem; }
.pie a { color: #fff; text-decoration: none; }
.pie a:hover { text-decoration: underline; }
.pie ul { list-style: none; padding: 0; margin: 0; }
.pie li { margin-bottom: 6px; }
.pie-legal { border-top: 1px solid rgba(255,255,255,.12); margin-top: 32px; padding: 16px 0; text-align: center; font-size: .85rem; }
@media (max-width: 760px) { .pie .contenedor { grid-template-columns: 1fr; gap: 20px; } }

/* ---------- Botón flotante WhatsApp/llamar ---------- */
.flotante {
  position: fixed; right: 16px; bottom: 16px; z-index: 60;
  background: var(--rojo); color: #fff; text-decoration: none; font-weight: 700;
  padding: 12px 18px; border-radius: 40px; box-shadow: 0 6px 18px rgba(0,0,0,.25);
  display: none;
}
@media (max-width: 760px) { .flotante { display: inline-block; } }