/* Base */
:root{
  --bg:#0b0b0b;
  --bg-soft:#111;
  --card:#1a1a1a;
  --primary:#e63946;
  --text:#ffffff;
  --muted:#c7c7c7;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
}

.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.header{
  position:fixed;top:0;left:0;right:0;
  background:rgba(0,0,0,.75);
  backdrop-filter:blur(8px);
  z-index:1000;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{font-weight:800;color:var(--primary);letter-spacing:.08em}
.nav a{margin-left:22px;color:#fff;text-decoration:none;font-weight:500;opacity:.9}
.nav a:hover{opacity:1;color:var(--primary)}
.menu{display:none;background:none;border:none;color:#fff;font-size:24px}

/* Hero */
.hero{
  position:relative;
  height:100vh;
  display:flex;align-items:center;
  background:url('https://images.unsplash.com/photo-1503387762-592deb58ef4e') center/cover no-repeat;
}
.overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.75),rgba(0,0,0,.85))}
.hero-content{position:relative;text-align:center;margin-top:40px}
.hero h1{font-size:42px;max-width:900px;margin:0 auto 12px}
.hero p{color:var(--muted);margin-bottom:22px}

.hero-cta{margin-bottom:28px}
.btn{
  display:inline-block;
  padding:12px 22px;border-radius:8px;
  background:var(--primary);color:#fff;text-decoration:none;font-weight:600;
  transition:.2s transform,.2s opacity;
}
.btn:hover{transform:translateY(-1px);opacity:.95}
.btn.outline{background:transparent;border:1px solid #fff}
.btn.whatsapp{background:#25D366}

.hero-stats{
  display:flex;justify-content:center;gap:28px;flex-wrap:wrap
}
.hero-stats div{
  background:rgba(255,255,255,.06);
  padding:12px 18px;border-radius:10px
}
.hero-stats strong{display:block;font-size:22px;color:var(--primary)}
.hero-stats span{font-size:13px;color:var(--muted)}

/* Sections */
.section{padding:90px 0}
.section.dark{background:var(--bg-soft)}
.section h2{margin:0 0 8px}
.section-sub{color:var(--muted);margin-bottom:24px}

/* Projects */
.projects-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:22px
}
.project-card{
  background:var(--card);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;
  transition:.25s transform,.25s box-shadow;
}
.project-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.project-card img{width:100%;height:180px;object-fit:cover}
.project-content{padding:16px}
.project-content h3{margin:0 0 4px}
.location{font-size:13px;color:var(--muted);margin-bottom:10px}
.project-content ul{padding-left:18px;margin:0}
.project-content li{margin-bottom:6px}

/* Specialties */
.grid-4{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px
}
.card{
  background:var(--card);border-radius:12px;padding:18px
}
.card h3{margin-top:0}

/* Process */
.process{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px
}
.step{
  background:var(--card);border-radius:12px;padding:18px
}
.step span{
  display:inline-block;width:32px;height:32px;border-radius:50%;
  background:var(--primary);text-align:center;line-height:32px;font-weight:700;margin-bottom:10px
  
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 75px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.1);
}

/* CTA */
.cta{
  background:var(--primary);padding:70px 0;text-align:center
}
.cta p{opacity:.9}
.cta-actions{margin-top:16px}

/* Contact */
.contact-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:24px
}
.contact-form{
  background:var(--card);border-radius:12px;padding:18px;
  display:flex;flex-direction:column;gap:10px
}
.contact-form input,
.contact-form textarea{
  width:100%;padding:10px;border-radius:8px;border:none;
  background:#0f0f0f;color:#fff
}
.contact-form textarea{min-height:110px;resize:vertical}
.contact-form small{color:var(--muted)}

/* Footer */
.footer{padding:24px 0;text-align:center;background:#000;color:#aaa}

/* Responsive */
@media (max-width:900px){
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .nav{display:none;position:absolute;top:70px;right:20px;background:#000;padding:14px;border-radius:10px}
  .nav.active{display:flex;flex-direction:column}
  .nav a{margin:10px 0}
  .menu{display:block}
  .hero h1{font-size:30px}
}

.social-links {
  margin-top: 15px;
  display: flex;
  gap: 14px;
}

.social-btn {
  color: #fff;
  font-size: 20px;
  text-decoration: none;
  opacity: 0.85;
  transition: all 0.2s ease;
}

/* Hover elegante */
.social-btn:hover {
  opacity: 1;
  color: var(--primary); /* rojo de tu marca */
  transform: translateY(-2px);
}


.video-section {
  position: relative;
  height: 400px;
  overflow: hidden;
}

.video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
}

.video-content {
  position: relative;
  z-index: 2;
  color: white;
  text-align: center;
  top: 50%;
  transform: translateY(-50%);
}

.video-content h2 {
  font-size: 2rem;
  margin-bottom: 10px;
}

.video-content p {
  opacity: 0.9;
}

/* ancla*/
.btn-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  left: auto;

  width: 50px;
  height: 50px;

  background: #e63946;
  color: #fff;

  display: flex;
  align-items: center;
  justify-content: center;

  border-radius: 50%;
  font-size: 20px;
  text-decoration: none;

  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  transition: all 0.3s ease;

  opacity: 0;
  visibility: hidden;

  z-index: 9999;
}

.btn-top:hover {
  background: #c92c3a;
  transform: translateY(-5px);
}