/* =========================================================
   RentInvest — plataforma de inversión hipotecaria
   HTML5 + CSS3 puro. Sin frameworks. Sin WordPress.
   Réplica fiel del sitio original (blanco + gris oscuro + teal).
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --teal:      #12C7B6;   /* acento de marca (logo/iconos ≈ rgba(0,221,199)) */
  --teal-dark: #0FA99B;
  --dark:      #32373c;   /* secciones oscuras */
  --dark2:     #2b2f34;   /* footer */
  --text:      #444444;
  --muted:     #7a8085;
  --white:     #ffffff;
  --line:      #e7e9eb;

  --head: "Raleway", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  --body: "Roboto", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  --header-h: 78px;
  --maxw: 1170px;
}

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body { font-family: var(--body); font-size: 16px; line-height: 1.7; color: var(--text); background: #fff; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: var(--teal-dark); text-decoration: none; transition: color .2s ease, background .2s ease, opacity .2s ease; }
a:hover { color: var(--teal); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; position: relative; }
.section--dark { background: var(--dark); color: #fff; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Botones (cuadrados, mayúsculas) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--head); font-weight: 700; font-size: 13px; letter-spacing: .12em; text-transform: uppercase;
  padding: 15px 32px; border-radius: 2px; border: 2px solid var(--teal); cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.btn-solid { background: var(--teal); color: #fff; }
.btn-solid:hover { background: var(--teal-dark); border-color: var(--teal-dark); color: #fff; }
.btn-outline { background: transparent; color: #fff; }
.btn-outline:hover { background: #fff; color: var(--dark); border-color: #fff; }
.btn-block { width: 100%; }

/* ---------- Cabecera de sección ---------- */
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 54px; }
.sec-head h2 { font-family: var(--head); font-weight: 800; font-size: clamp(26px, 4vw, 36px); text-transform: uppercase; letter-spacing: .04em; color: var(--dark); }
.section--dark .sec-head h2, .sec-head--light h2 { color: #fff; }
.sec-line { display: block; width: 60px; height: 3px; background: var(--teal); margin: 16px auto 20px; }
.sec-sub { color: var(--muted); font-size: 17px; }
.section--dark .sec-sub, .sec-head--light .sec-sub { color: rgba(255,255,255,.72); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--header-h); display: flex; align-items: center; background: rgba(30,33,37,.28); transition: background .35s ease, height .35s ease, box-shadow .35s ease; }
.site-header.scrolled { background: var(--dark); height: 64px; box-shadow: 0 2px 18px rgba(0,0,0,.25); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand img { height: 42px; width: 42px; }
.brand .wordmark { font-family: var(--head); font-weight: 700; font-size: 23px; color: #fff; letter-spacing: .01em; }
.header-right { display: flex; align-items: center; gap: 26px; }
.header-phone { font-family: var(--head); font-weight: 600; color: #fff; font-size: 15px; }
.header-phone:hover { color: var(--teal); }
.main-nav ul { list-style: none; display: flex; gap: 26px; align-items: center; }
.main-nav a { font-family: var(--head); font-size: 14px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: #fff; }
.main-nav a:hover { color: var(--teal); }
.main-nav .nav-cta { background: var(--teal); padding: 9px 18px; border-radius: 2px; }
.main-nav .nav-cta:hover { background: var(--teal-dark); color: #fff; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 38px; height: 38px; position: relative; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 7px; right: 7px; height: 2px; background: #fff; transition: transform .3s ease, opacity .3s ease; }
.nav-toggle span { top: 50%; transform: translateY(-50%); }
.nav-toggle span::before { top: -7px; } .nav-toggle span::after { top: 7px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span::after { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   HERO (slider de 3 imágenes con crossfade)
   ========================================================= */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; background: var(--dark); overflow: hidden; }
.hero-slider { position: absolute; inset: 0; }
.hero-slider .slide { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0; animation: slideFade 18s infinite; }
.hero-slider .slide1 { background-image: image-set(url("slide1.webp") type("image/webp"), url("slide1.jpg") type("image/jpeg")); animation-delay: 0s; }
.hero-slider .slide2 { background-image: image-set(url("slide2.webp") type("image/webp"), url("slide2.jpg") type("image/jpeg")); animation-delay: 6s; }
.hero-slider .slide3 { background-image: image-set(url("slide3.webp") type("image/webp"), url("slide3.jpg") type("image/jpeg")); animation-delay: 12s; }
@keyframes slideFade { 0% { opacity: 0; } 4% { opacity: 1; } 30% { opacity: 1; } 36% { opacity: 0; } 100% { opacity: 0; } }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(30,33,37,.72), rgba(30,33,37,.78)); }
.hero-content { position: relative; z-index: 2; padding: calc(var(--header-h) + 30px) 24px 60px; }
.hero-logo { width: 140px; height: 140px; margin: 0 auto 26px; filter: drop-shadow(0 6px 20px rgba(0,0,0,.35)); }
.hero h1 { font-family: var(--head); font-weight: 800; color: #fff; font-size: clamp(28px, 5vw, 46px); text-transform: uppercase; letter-spacing: .02em; line-height: 1.15; }
.hero h1 span { color: var(--teal); }
.hero-tagline { font-family: var(--head); font-weight: 600; color: #fff; text-transform: uppercase; letter-spacing: .16em; font-size: clamp(14px, 2vw, 19px); margin: 16px 0 34px; }
.hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* =========================================================
   NUESTRAS INVERSIONES (tarjetas con contador)
   ========================================================= */
.invest-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.invest-card { text-align: center; padding: 40px 28px; border: 1px solid var(--line); border-radius: 4px; background: #fff; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.invest-card:hover { transform: translateY(-5px); box-shadow: 0 18px 40px rgba(50,55,60,.10); border-color: transparent; }
.invest-card .ic { width: 60px; height: 60px; margin: 0 auto 18px; }
.invest-card .num { font-family: var(--head); font-weight: 800; font-size: 52px; line-height: 1; color: var(--teal); margin-bottom: 12px; }
.invest-card .num--text { font-size: 40px; }
.invest-card p { color: var(--muted); font-size: 15.5px; margin: 0; }

/* =========================================================
   PREREGISTRO
   ========================================================= */
.prereg { background: var(--teal); color: #fff; text-align: center; }
.prereg-inner { max-width: 680px; margin: 0 auto; }
.prereg h2 { font-family: var(--head); font-weight: 800; font-size: clamp(28px, 4vw, 40px); text-transform: uppercase; letter-spacing: .03em; }
.prereg-lead { font-family: var(--head); font-weight: 600; font-size: 19px; margin: 14px 0 6px; }
.prereg-sub { color: rgba(255,255,255,.9); margin-bottom: 28px; }
.prereg-form { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; align-items: center; }
.prereg-input { flex: 1 1 320px; max-width: 420px; font-family: var(--body); font-size: 16px; padding: 15px 18px; border: 0; border-radius: 2px; color: var(--text); }
.prereg-input:focus { outline: 3px solid rgba(255,255,255,.5); }
.prereg .btn-solid { background: var(--dark); border-color: var(--dark); }
.prereg .btn-solid:hover { background: #1f2226; border-color: #1f2226; }
.prereg-check { flex: 1 1 100%; font-size: 13px; color: rgba(255,255,255,.92); margin-top: 4px; }
.prereg-check a { color: #fff; text-decoration: underline; }
.prereg-check input { margin-right: 6px; accent-color: var(--dark); }
.prereg-success { flex: 1 1 100%; margin-top: 14px; background: rgba(255,255,255,.16); padding: 12px 16px; border-radius: 2px; font-weight: 600; }

/* =========================================================
   FAQ
   ========================================================= */
.faq { max-width: 860px; margin: 0 auto; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 44px 22px 0; position: relative; font-family: var(--head); font-weight: 600; font-size: 17px; color: var(--dark); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; position: absolute; right: 6px; top: 26px; width: 11px; height: 11px; border-right: 2.2px solid var(--teal); border-bottom: 2.2px solid var(--teal); transform: rotate(45deg); transition: transform .25s ease; }
.faq details[open] summary::after { transform: rotate(-135deg); top: 30px; }
.faq details p { padding: 0 40px 24px 0; color: var(--muted); }

/* =========================================================
   CONTACTO
   ========================================================= */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 46px; align-items: start; }
.contact-info .citem { display: flex; gap: 14px; margin-bottom: 24px; }
.contact-info .cic { font-size: 22px; line-height: 1.2; }
.contact-info h4 { font-family: var(--head); font-weight: 700; font-size: 16px; color: #fff; margin-bottom: 2px; }
.contact-info p, .contact-info a { color: rgba(255,255,255,.78); }
.contact-info a:hover { color: var(--teal); }
.map-wrap { margin-top: 10px; border-radius: 4px; overflow: hidden; box-shadow: 0 14px 36px rgba(0,0,0,.35); }
.map-wrap iframe { width: 100%; height: 260px; border: 0; display: block; filter: grayscale(.2); }

.contact-form { background: #fff; border-radius: 6px; padding: 32px; color: var(--text); box-shadow: 0 20px 50px rgba(0,0,0,.28); }
.frow { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.fgroup { margin-bottom: 16px; }
.fgroup label { display: block; font-family: var(--head); font-weight: 600; font-size: 13px; margin-bottom: 6px; color: var(--dark); }
.fgroup input, .fgroup textarea { width: 100%; font-family: var(--body); font-size: 15px; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 3px; color: var(--text); }
.fgroup input:focus, .fgroup textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(18,199,182,.15); }
.fgroup textarea { resize: vertical; }
.fcheck { display: block; font-size: 13px; color: var(--muted); margin: 4px 0 18px; }
.fcheck input { margin-right: 6px; accent-color: var(--teal); }
.fcheck a { text-decoration: underline; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer { background: var(--dark2); color: rgba(255,255,255,.66); padding: 52px 0 26px; font-size: 14.5px; }
.ftop { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 34px; padding-bottom: 30px; border-bottom: 1px solid rgba(255,255,255,.08); }
.fbrand { display: flex; align-items: center; gap: 11px; margin-bottom: 12px; }
.fbrand span { font-family: var(--head); font-weight: 700; font-size: 20px; color: #fff; }
.fcol h4 { font-family: var(--head); font-weight: 700; font-size: 15px; color: #fff; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 10px; }
.fcol a { color: var(--teal); }
.fbottom { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; padding-top: 20px; font-size: 13.5px; }
.flegal a { color: rgba(255,255,255,.72); }
.flegal a:hover { color: var(--teal); }

/* ---------- Volver arriba ---------- */
.to-top { position: fixed; right: 22px; bottom: 22px; z-index: 90; width: 46px; height: 46px; display: inline-flex; align-items: center; justify-content: center; background: var(--teal); color: #fff; border: 0; border-radius: 2px; font-size: 22px; cursor: pointer; box-shadow: 0 8px 22px rgba(0,0,0,.3); opacity: 0; visibility: hidden; transform: translateY(10px); transition: opacity .3s ease, transform .3s ease, visibility .3s ease, background .2s ease; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--teal-dark); }

/* =========================================================
   PÁGINAS LEGALES
   ========================================================= */
.legal-hero { background: var(--dark); padding: calc(var(--header-h) + 56px) 0 56px; }
.legal-hero h1 { font-family: var(--head); font-weight: 800; color: #fff; text-transform: uppercase; letter-spacing: .03em; font-size: clamp(26px, 4vw, 38px); }
.legal-body { padding: 60px 0 80px; }
.legal-body .container { max-width: 860px; }
.legal-body h2 { font-family: var(--head); font-weight: 700; font-size: 21px; color: var(--dark); margin: 32px 0 12px; }
.legal-body p, .legal-body li { color: #4a4f54; margin-bottom: 14px; }
.legal-body ul { margin: 0 0 16px 22px; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px) {
  .invest-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .ftop { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  :root { --header-h: 62px; }
  .section { padding: 66px 0; }
  .header-phone { display: none; }
  .nav-toggle { display: block; z-index: 110; }
  .main-nav { position: fixed; inset: 0 0 0 auto; width: min(80vw, 300px); background: var(--dark); padding: calc(var(--header-h) + 22px) 28px 40px; transform: translateX(100%); transition: transform .35s ease; box-shadow: -10px 0 40px rgba(0,0,0,.4); }
  .nav-open .main-nav { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 22px; }
  .main-nav a { font-size: 18px; }
  .nav-open .site-header { background: var(--dark); }
  .hero-slider .slide1 { background-image: image-set(url("slide1-m.webp") type("image/webp"), url("slide1-m.jpg") type("image/jpeg")); }
  .hero-slider .slide2 { background-image: image-set(url("slide2-m.webp") type("image/webp"), url("slide2-m.jpg") type("image/jpeg")); }
  .hero-slider .slide3 { background-image: image-set(url("slide3-m.webp") type("image/webp"), url("slide3-m.jpg") type("image/jpeg")); }
}
@media (max-width: 560px) {
  .invest-grid { grid-template-columns: 1fr; }
  .frow { grid-template-columns: 1fr; }
  .ftop { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .fbottom { flex-direction: column; align-items: flex-start; }
}