:root{
  --bg:#0B1C2D;
  --bg2:#0f263e;
  --text:#0e1620;
  --muted:#546070;
  --card:#ffffff;
  --alt:#f5f7fb;
  --line:#e6eaf1;
  --white:#ffffff;
  --shadow: 0 10px 30px rgba(0,0,0,.08);
  --radius: 14px;
  --radius2: 18px;
  --max: 1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color:var(--text);
  background:#fff;
}

a{color:inherit; text-decoration:none}
img{max-width:100%; display:block}

.container{max-width:var(--max); margin:0 auto; padding:0 18px}
.section{padding:72px 0}
.section--alt{background:var(--alt)}
.section__head{margin-bottom:22px}
.section__title{margin:0 0 8px; font-size:28px; letter-spacing:.2px;text-align:center;}
.section__lead{margin:0 auto; color:var(--muted); max-width:70ch;text-align:center;}

.grid{display:grid; gap:18px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width: 960px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width: 680px){
  .grid--2,.grid--4{grid-template-columns:1fr}
  .section{padding:54px 0}
}

/* Header */
.header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:50;
  transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
  border-bottom:1px solid transparent;
}
.header--transparent{background:transparent}
.header--solid{
  background:rgba(11,28,45,.95);
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow: 0 12px 30px rgba(0,0,0,.18);
  backdrop-filter: blur(10px);
}

.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:90px;
}

.brand{display:flex; gap:12px; align-items:center}
.brand__logo{width:auto; height:85px}
.brand__meta{display:flex; flex-direction:column; line-height:1.1}
.brand__name{font-weight:850; letter-spacing:.5px; font-size:26px}
.brand__tagline{font-size:17px; opacity:.95}

.header--transparent .brand__name,
.header--transparent .brand__tagline,
.header--transparent .nav__links a{color:#fff}

.header--solid .brand__name,
.header--solid .brand__tagline,
.header--solid .nav__links a{color:#fff}

/* Nav */
.nav{display:flex; align-items:center; gap:14px}
.nav__toggle{
  display:none;
  border:1px solid rgba(255,255,255,.25);
  background:transparent;
  color:#fff;
  border-radius:10px;
  padding:8px 10px;
}
.nav__links{display:flex; align-items:center; gap:16px}
.nav__links a{font-size:13px; opacity:.92}
.nav__links a:hover{opacity:1}
.nav__cta{
  padding:10px 12px;
  border:1px solid rgba(255,255,255,.25);
  border-radius:999px;
}
.lang{display:flex; gap:8px; margin-left:6px}
.lang__btn{
  border:1px solid rgba(255,255,255,.22);
  background:transparent;
  color:#fff;
  border-radius:999px;
  padding:8px 10px;
  font-size:12px;
  opacity:.9;
  cursor:pointer;
}
.lang__btn[aria-pressed="true"]{opacity:1; border-color:rgba(255,255,255,.55)}
.lang_btn img{
height:16px;
width:auto;
vertical-align:middle;
margin-right:4px;
}

@media (max-width: 900px){
  .nav__toggle{display:inline-flex}
  .nav__links{
    position:absolute;
    top:72px;
    right:18px;
    left:18px;
    background:rgba(11,28,45,.98);
    border:1px solid rgba(255,255,255,.08);
    border-radius:14px;
    padding:14px;
    display:none;
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
    box-shadow: 0 24px 40px rgba(0,0,0,.25);
  }
  .nav__links.is-open{display:flex}
  .nav__cta{width:100%; text-align:center}
  .lang{margin-left:0}
}

/* Hero */
.hero{
  position:relative;
  min-height:92vh;
  display:flex;
  align-items:center;
  color:#fff;
}
.hero__slides{
  position:absolute;
  inset:0;
  overflow:hidden;
}
.hero__slide{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:0;
  transform:scale(1.03);
  transition: opacity 1.2s ease, transform 1.2s ease;
}
.hero__slide.is-active{
  opacity:1;
  transform:scale(1);
}
.hero__overlay{
  position:absolute; inset:0;
  background: linear-gradient(120deg, rgba(11,28,45,.78), rgba(11,28,45,.45));
}
.hero__content{
  position:relative;
  padding-top:92px; /* avoid header overlap */
}
.hero__title{margin:0 0 10px; font-size:44px; max-width:18ch; letter-spacing:.2px}
.hero__subtitle{margin:0 0 20px; opacity:.92}
.hero__actions{display:flex; gap:12px; flex-wrap:wrap}

.hero__dots{
  margin-top:22px;
  display:flex;
  gap:8px;
}
.dot{
  width:10px; height:10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.5);
  background:transparent;
  cursor:pointer;
  opacity:.9;
}
.dot.is-active{background:#fff; opacity:1}

@media (max-width: 680px){
  .hero{min-height:88vh}
  .hero__title{font-size:34px}
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 14px;
  border-radius:999px;
  font-size:13px;
  border:1px solid transparent;
  cursor:pointer;
  transition: transform .08s ease, opacity .2s ease, background .2s ease, border-color .2s ease;
  user-select:none;
}
.btn:hover{opacity:.95}
.btn:active{transform: translateY(1px)}
.btn--primary{background:#fff; color:var(--bg)}
.btn--secondary{background:transparent; color:#fff; border-color:rgba(255,255,255,.35)}
.btn--ghost{background:transparent; color:#fff; border-color:rgba(255,255,255,.18)}

/* Cards/Tiles */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
  box-shadow: var(--shadow);
}
.card__title{margin:0 0 6px; font-size:18px}
.card__subtitle{margin:0 0 10px; color:var(--muted); font-size:13px}
.card__text{margin:0; color:#283240; line-height:1.55}

.tile{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius2);
  overflow:hidden;
  box-shadow: var(--shadow);
  display:flex;
  flex-direction:column;
  min-height: 100%;
}
.tile__img{height:150px; object-fit:cover}
.tile__body{padding:16px}
.tile__title{margin:0 0 8px; font-size:16px}
.tile__text{margin:0 0 12px; color:var(--muted); line-height:1.45; font-size:13px}
.tile__link{font-size:13px; color:var(--bg2); font-weight:600}

/* Panels */
.panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius2);
  overflow:hidden;
  box-shadow: var(--shadow);
}
.panel__top{padding:16px}
.panel__title{margin:0 0 6px; font-size:16px}
.panel__text{margin:0; color:var(--muted); font-size:13px}
.panel__media img{width:100%; height:220px; object-fit:cover}

/* Callout */
.callout{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius2);
  padding:18px;
  box-shadow: var(--shadow);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.callout__text h3{margin:0 0 6px}
.callout__text p{margin:0; color:var(--muted); max-width:80ch}
.callout__actions{display:flex; gap:12px; flex-wrap:wrap}
.callout .btn--primary{background:var(--bg); color:#fff}
.callout .btn--secondary{border-color:rgba(11,28,45,.25); color:var(--bg); background:transparent}
@media (max-width: 680px){
  .callout{flex-direction:column; align-items:flex-start}
}

/* Form */
.form{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius2);
  padding:18px;
  box-shadow: var(--shadow);
}
.form__row{display:flex; flex-direction:column; gap:6px; margin-bottom:12px}
.form label{font-size:13px; color:#2b3646}
.form input,.form select,.form textarea{
  border:1px solid var(--line);
  border-radius:12px;
  padding:12px;
  font-size:14px;
  outline:none;
}
.form input:focus,.form select:focus,.form textarea:focus{border-color:#b9c4d6}
.form__hint{margin:10px 0 0; font-size:13px; color:var(--muted)}

/* Contact box */
.contactbox{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius2);
  padding:18px;
  box-shadow: var(--shadow);
}
.contactbox__p{margin:0 0 10px; color:#2b3646}
.contactbox__actions{margin-top:12px}
.contactbox__note{margin:14px 0 0; color:var(--muted); font-size:12px}

/* Footer */
.footer{background:var(--bg); color:#fff; padding:26px 0}
.footer__inner{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
}
.footer__brand{font-weight:700; letter-spacing:.4px}
.footer__tag{opacity:.86; font-size:13px}
.footer__links{display:flex; gap:12px; flex-wrap:wrap}
.footer__links a{opacity:.9; font-size:13px}
.footer__links a:hover{opacity:1}
.footer__copy{opacity:.75; font-size:12px}

/* WhatsApp floating */
.wa-float{
  position:fixed;
  right:16px;
  bottom:16px;
  z-index:80;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  padding:10px 12px;
  box-shadow: var(--shadow);
  display:flex;
  align-items:center;
  gap:10px;
}
.wa-dot{
  width:10px; height:10px; border-radius:999px;
  background:#25D366;
  box-shadow: 0 0 0 6px rgba(37,211,102,.12);
}
.wa-text{font-size:13px; font-weight:600; color:#15202c}
.project-gallery {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 15px 0 20px;
}
.project-gallery img {
    width: 48%;
    height: auto;
    border-radius: 10px;
}
.capabilities {
  margin-top: 80px;
}

.capabilities h2 {
  font-size: 32px;
  margin-bottom: 10px;
}

.section-subtitle {
  color: #666;
  margin-bottom: 40px;
}

.capabilities-grid {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
}

.cap-card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  padding: 25px;
  flex: 1;
  min-width: 280px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cap-card img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 20px;
}

.cap-card h3 {
  margin-bottom: 10px;
}

.cap-card p {
  font-size: 14px;
  color: #555;
  margin-bottom: 15px;
}

.cap-card ul {
  padding-left: 18px;
}

.cap-card li {
  margin-bottom: 6px;
  font-size: 14px;
}

.cap-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}
.firma-card {
  display: flex;
  align-items: center;
  gap: 20px;
}

.firma-img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  flex-shrink:0;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

#firma .card__title {
  font-size: 18px;
  font-weight: 600;
}

#firma .card__subtitle {
  font-size: 13px;
  color: #777;
  margin-bottom: 12px;
}

.firma-info {
  flex: 1;
}

.firma-card .card__title {
  margin-bottom: 5px;
  font-size: 20px;
}

.firma-card .card__subtitle {
  color: #777;
  font-size: 14px;
  margin-bottom: 10px;
}
#firma .grid {
    align-items: stretch;
}

#firma .card {
    height: 100%;
}

.firma-card {
    display: flex;
    align-items: center;
    gap: 20px;
}
#firma .grid {
    align-items: stretch;
}

#firma .card {
    height: 100%;
}

.firma-card {
    display: flex;
    align-items: center;
    gap: 20px;
}
/* FIX: Firma y secciones de abajo alineadas */
#firma .grid.grid--2{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 25px;
  align-items: start;
}

#firma .card.firma-card{
  display: flex;
  gap: 18px;
  align-items: center;
}

/* espacio consistente entre Firma y lo que viene abajo */
#firma{
  padding-bottom: 60px;
}
.lang {
display: flex;
gap: 8px;
align-items: center;
}

.lang_btn {
display: flex;
align-items: center;
gap: 6px;
background: none;
border: none;
cursor: pointer;
font-size: 12px;
color: #fff;
opacity: 0.7;
}

.lang_btn:hover {
opacity: 1;
}
.lang_btn img {
height: 14px;
width: auto;
border-radius: 2px;
}
.lang_btn img {
height: 14px;
width: auto;
border-radius: 2px;
}
.tile_img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 12px 12px 0 0;
    margin-bottom: 15px;
}
.modelo-card {
  text-align: center;
  padding: 20px;
}

/* ===== MODELOS DE VIVIENDA ===== */

#modelos {
  width: 100%;
}

.modelos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  max-width: 900px;
  margin: 0 auto;
}

.modelos-grid img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 10px;
}

/* TITULOS */
#modelos h3 {
  text-align: left;
  margin: 25px auto 10px auto;
  max-width: 900px;
}

/* BOTÓN */
.modelo-btn {
  max-width: 900px;
  margin: 10px auto 40px auto;
  text-align: left;
}

.btn-modelo {
  display: inline-block;
  font-size: 14px;
  text-decoration: none;
  color: #333;
}

/* ===== MOBILE ===== */

@media (max-width: 768px) {

  .modelos-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 0 15px;
  }

  .modelos-grid img {
    height: 140px;
  }

  #modelos h3 {
    padding: 0 15px;
  }

  .modelo-btn {
    padding: 0 15px;
  }

  .brand__logo img {
    width: 120px;
    height: auto;
  }
}
/* ===== FIX MOBILE GENERAL ===== */
@media (max-width: 768px) {

  .container,
  section {
    padding-left: 20px;
    padding-right: 20px;
  }

  .modelos-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .modelos-grid img {
    width: 100%;
    height: auto;
  }

  .modelo-btn {
    text-align: left;
    margin-top: 10px;
  }

  .capabilities {
    padding: 40px 20px;
  }

  .team-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .team-card {
    width: 100%;
  }

  /* WhatsApp botón */
  .whatsapp {
    bottom: 15px;
    right: 15px;
    z-index: 999;
  }

}
.modelo-btn {
  text-align: left;
}