/* ===== Tokens ===== */
:root {
  --crema: #F7F3E9;
  --celeste: #A9D4E6;
  --celeste-050: #E4F0F6;
  --azul: #1C6E93;
  --azul-700: #155574;   /* hover de botones/links */
  --ink: #16212B;
  --gris: #5B6B78;
  --blanco: #FFFFFF;
  --font: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --maxw: 1500px;
  --pad: clamp(1.25rem, 5vw, 4rem);
}

/* ===== Reset mínimo ===== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--crema);
  line-height: 1.5;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
h1, h2, h3, p { margin: 0; }
a { color: var(--azul); text-decoration: none; }
a:hover { color: var(--azul-700); text-decoration: underline; }

/* ===== Utilidades ===== */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.section { padding-block: clamp(3rem, 8vw, 6rem); }
.section--tint { background: var(--celeste-050); }

/* ===== Botones ===== */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 700;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}
.btn--primary { background: var(--azul); color: var(--blanco); }
.btn--primary:hover { background: var(--azul-700); color: var(--blanco); text-decoration: none; }
.btn--ghost { background: transparent; color: var(--azul); border-color: var(--azul); }
.btn--ghost:hover { background: var(--azul); color: var(--blanco); text-decoration: none; }

/* Foco visible global */
:focus-visible { outline: 3px solid var(--azul); outline-offset: 2px; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247,243,233,.9);
  backdrop-filter: saturate(1.2) blur(6px);
  border-bottom: 1px solid var(--celeste);
}
.nav { display: flex; align-items: center; justify-content: space-between; min-height: 66px; }
.nav__brand { display: inline-flex; }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2rem); }
.nav__links a { color: var(--ink); font-weight: 600; }
.nav__links a:hover { color: var(--azul); text-decoration: none; }
.nav__links a.btn { color: var(--blanco); }
.nav__toggle { display: none; }

@media (max-width: 760px) {
  .nav__toggle {
    display: inline-flex; flex-direction: column; gap: 5px;
    background: none; border: 0; padding: 10px; cursor: pointer;
  }
  .nav__toggle span { width: 24px; height: 2px; background: var(--ink); display: block; }
  .nav__links {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: .25rem;
    background: var(--blanco); border-bottom: 1px solid var(--celeste);
    padding: 1rem var(--pad); display: none;
  }
  .nav__links.is-open { display: flex; }
  .nav__links a { padding: .6rem 0; }
  .nav__links a.btn { text-align: center; margin-top: .5rem; }
}

/* ===== Hero ===== */
.hero { padding-block: clamp(3rem, 9vw, 7rem); overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.4fr 1fr; align-items: center; gap: clamp(1.5rem, 5vw, 4rem); }
.hero__title { font-size: clamp(2.75rem, 8.5vw, 6.5rem); line-height: 1.02; letter-spacing: -0.02em; font-weight: 700; color: var(--ink); }
.hero__sub { font-size: clamp(1.35rem, 3.5vw, 2.25rem); font-weight: 700; color: var(--azul); margin-top: .5rem; }
.hero__lead { font-size: clamp(1rem, 1.5vw, 1.15rem); color: var(--gris); margin-top: 1.25rem; max-width: 46ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero__mark { width: 100%; max-width: 400px; margin-inline: auto; color: var(--celeste); }
@media (max-width: 760px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__mark { display: none; }
}

/* ===== Franja de confianza ===== */
.trust { background: var(--celeste); }
.trust__list { list-style: none; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: clamp(1rem, 3vw, 2rem); }
.trust__item { display: flex; flex-direction: column; gap: .25rem; }
.trust__item strong { font-size: 1.05rem; color: var(--ink); }
.trust__item span { color: var(--ink); opacity: .75; font-size: .95rem; }
@media (max-width: 760px) { .trust__list { grid-template-columns: 1fr 1fr; } }
@media (max-width: 440px) { .trust__list { grid-template-columns: 1fr; } }

/* ===== Títulos de sección ===== */
.section__title { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700; letter-spacing: -0.01em; margin-bottom: 2rem; color: var(--azul); }

/* ===== Pasos ===== */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 4vw, 2.5rem); }
.step__num { font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 700; color: var(--celeste); line-height: 1; display: block; }
.step__title { font-size: 1.2rem; margin: .5rem 0 .35rem; }
.step p { color: var(--gris); }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }

/* ===== Servicios ===== */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 3vw, 1.75rem); }
.card { background: var(--blanco); border: 1px solid var(--celeste); border-top: 4px solid var(--azul); border-radius: 14px; padding: 1.5rem; }
.card__tag { display: inline-block; font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--azul); background: var(--celeste-050); padding: .25rem .6rem; border-radius: 999px; }
.card__title { font-size: 1.3rem; margin: .75rem 0 .5rem; }
.card__desc { color: var(--gris); }
@media (max-width: 860px) { .services { grid-template-columns: 1fr; } }

/* ===== Por qué Rueda ===== */
.why { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 2.5rem; }
.why__item { position: relative; padding-left: 1.75rem; color: var(--gris); }
.why__item strong { color: var(--ink); }
.why__item::before { content: ""; position: absolute; left: 0; top: .55em; width: .7rem; height: .7rem; border-radius: 50%; border: 3px solid var(--azul); }
@media (max-width: 760px) { .why { grid-template-columns: 1fr; } }

/* ===== FAQ ===== */
.faq__item { border-bottom: 1px solid var(--celeste); }
.faq__item summary { cursor: pointer; list-style: none; padding: 1.1rem 2rem 1.1rem 0; font-weight: 600; position: relative; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after { content: "+"; position: absolute; right: .25rem; top: 50%; transform: translateY(-50%); color: var(--azul); font-size: 1.5rem; line-height: 1; }
.faq__item[open] summary::after { content: "\2013"; } /* guion */
.faq__item p { color: var(--gris); padding: 0 0 1.2rem; margin: 0; max-width: 70ch; }

/* ===== Cierre + formulario ===== */
.cta { background: var(--celeste); }
.cta__grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(1.5rem, 4vw, 3rem); align-items: start; }
.cta__title { font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.05; letter-spacing: -0.01em; }
.cta__intro p { margin-top: 1rem; color: var(--ink); max-width: 34ch; }
.form { background: var(--blanco); border-radius: 16px; padding: clamp(1.25rem, 3vw, 2rem); }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.25rem; }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-weight: 600; font-size: .9rem; }
.field input, .field select, .field textarea { font: inherit; padding: .7rem .8rem; border: 1px solid var(--gris); border-radius: 10px; background: var(--blanco); color: var(--ink); width: 100%; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--azul); outline: none; box-shadow: 0 0 0 3px rgba(28,110,147,.2); }
.field textarea { resize: vertical; }
.form__note { color: var(--gris); font-size: .85rem; margin-top: .75rem; }
@media (max-width: 860px) { .cta__grid { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .form__grid { grid-template-columns: 1fr; } }

/* ===== Footer ===== */
.site-footer { background: var(--ink); color: var(--blanco); padding-block: clamp(2.5rem, 6vw, 4rem) 1.5rem; }
.footer__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.footer__brand p { color: #C7D2DB; margin-top: 1rem; max-width: 34ch; }
.footer__contact { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.footer__contact a { color: var(--blanco); }
.footer__contact a:hover { color: var(--celeste); }
.footer__legal { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid rgba(255,255,255,.15); color: #9FB0BB; font-size: .85rem; }
@media (max-width: 640px) { .footer__grid { grid-template-columns: 1fr; } }