/* === VARIABLES Y BASE === */
        :root {
            --primary: #e63946;
            --bg-dark: #0a0a0a;
            --card-bg: #161616;
            --text-light: #f1faee;
            --nav-height: 70px;
        }
 
        html { scroll-behavior: smooth; }
 
        body {
            font-family: 'Montserrat', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-light);
            margin: 0; padding: 0;
            overflow-x: hidden;
        }
 
        /* === NAVBAR === */
        .navbar {
            position: fixed;
            top: 0; width: 100%; height: var(--nav-height);
            background: rgba(10, 10, 10, 0.95);
            backdrop-filter: blur(10px);
            display: flex; justify-content: space-between; align-items: center;
            padding: 0 5%; box-sizing: border-box; z-index: 1000;
            border-bottom: 1px solid rgba(230, 57, 70, 0.3);
        }
 
        .nav-logo { font-weight: 900; font-size: 1.5rem; text-decoration: none; color: white; text-transform: uppercase; }
        .nav-logo span { color: var(--primary); }
        .nav-links { display: flex; gap: 30px; }
        .nav-links a { text-decoration: none; color: white; font-weight: 700; font-size: 0.9rem; text-transform: uppercase; transition: 0.3s; letter-spacing: 1px; }
        .nav-links a:hover { color: var(--primary); }
 
        /* === CABECERA === */
        .header {
            height: 75vh; 
            display: flex; 
            flex-direction: column; 
            justify-content: center; 
            align-items: center; 
            text-align: center;
            background: linear-gradient(rgba(10, 10, 10, 0.7), rgba(10, 10, 10, 0.9)),
                        url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?q=80&w=2070');
            background-size: cover; 
            background-position: center;
            padding-top: 80px; 
        }
 
        .logo-nubika { font-size: clamp(3rem, 10vw, 5.5rem); font-weight: 900; text-transform: uppercase; letter-spacing: -2px; margin: 0; }
        .logo-nubika span { color: var(--primary); text-shadow: 0 0 30px rgba(230, 57, 70, 0.6); }
        .slogan { font-weight: 300; letter-spacing: 8px; text-transform: uppercase; opacity: 0.9; margin-top: 15px; font-size: clamp(14px, 2vw, 22px); }
 
        /* === TARJETAS INTERACTIVAS === */
        .container { max-width: 1200px; margin: -80px auto 100px auto; padding: 0 20px; }
        .services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 40px; }
 
        .service-card {
            background: var(--card-bg); padding: 50px 40px; border-radius: 12px; position: relative;
            overflow: hidden; transition: 0.5s; box-shadow: 0 20px 40px rgba(0,0,0,0.6);
            border: 1px solid rgba(255,255,255,0.05); display: flex; flex-direction: column; height: 350px;
        }
 
        .card-content { transition: 0.5s; z-index: 2; }
        .extra-info {
            position: absolute; bottom: -100%; left: 0; width: 100%;
            background: linear-gradient(transparent, var(--primary)); padding: 40px;
            box-sizing: border-box; transition: 0.6s cubic-bezier(0.23, 1, 0.32, 1); opacity: 0;
        }
 
        .service-card:hover { transform: translateY(-15px); border-color: var(--primary); }
        .service-card:hover .card-content { transform: translateY(-40px); }
        .service-card:hover .extra-info { bottom: 0; opacity: 1; }
 
        .service-card h3 { color: var(--primary); font-size: 2rem; margin-bottom: 20px; text-transform: uppercase; }
        .service-card p { font-size: 1.1rem; line-height: 1.6; opacity: 0.8; }
 
        .list-info { list-style: none; padding: 0; margin: 0; color: white; font-weight: 700; font-size: 0.9rem; }
        .list-info li { margin-bottom: 8px; }
 
        .btn-nubika {
            margin-top: 25px; background: var(--primary); color: white; padding: 18px 40px;
            text-decoration: none; font-weight: 900; text-transform: uppercase; display: inline-block;
            transition: 0.4s; border-radius: 4px; box-shadow: 6px 6px 0px #4d0f13; border: none; cursor: pointer;
            font-family: 'Montserrat', sans-serif;
        }
        .btn-nubika:hover { background: white; color: var(--primary); box-shadow: 0px 0px 20px rgba(255,255,255,0.2); transform: scale(1.05); }
 
        /* === SUBPÁGINAS (OVERLAYS) === */
        .overlay {
            position: fixed; top: 0; left: 0; width: 100%; height: 100%;
            background: var(--bg-dark); z-index: 2000; display: none;
            overflow-y: auto; padding: 100px 5%; box-sizing: border-box;
        }
        .overlay-content { max-width: 900px; margin: 0 auto; }
        .btn-back { color: var(--primary); text-decoration: none; font-weight: 900; text-transform: uppercase; margin-bottom: 30px; display: inline-block; cursor: pointer; }
        .sub-card { background: #111; padding: 40px; border-radius: 12px; border-left: 5px solid var(--primary); margin-bottom: 25px; }
        .sub-card h4 { color: var(--primary); margin-top: 0; font-size: 1.6rem; text-transform: uppercase; }
        .sub-card p { line-height: 1.8; opacity: 0.9; }
 
        /* === SECCIÓN ARTILLERÍA === */
        .section-full { padding: 100px 5%; max-width: 1200px; margin: 0 auto; }
        .section-title { font-size: 3rem; font-weight: 900; text-transform: uppercase; margin-bottom: 40px; border-left: 8px solid var(--primary); padding-left: 20px; }
        .section-title span { color: var(--primary); }
 
        .details-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .detail-item { background: #111; padding: 30px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.05); transition: 0.3s; }
        .detail-item:hover { border-color: var(--primary); background: #1a1a1a; }
        .detail-item h4 { color: var(--primary); margin-top: 0; font-size: 1.5rem; text-transform: uppercase; }
 
        /* === FORMULARIO DE CONTACTO === */
        .contact-section { background: #0c0c0c; padding: 100px 5%; border-top: 1px solid rgba(255,255,255,0.05); }
        .contact-container { max-width: 800px; margin: 0 auto; }
        .contact-form { display: grid; gap: 20px; }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { font-weight: 700; text-transform: uppercase; font-size: 0.8rem; margin-bottom: 8px; color: var(--primary); letter-spacing: 1px; }
        .form-group input, .form-group textarea {
            background: #1a1a1a; border: 1px solid rgba(255,255,255,0.1); padding: 15px; color: white;
            font-family: 'Montserrat', sans-serif; border-radius: 4px; transition: 0.3s;
        }
        .form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); background: #222; }
        .form-group textarea { height: 150px; resize: none; }
 
        /* === SECCIÓN QUIENES SOMOS === */
        .about-box { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 50px; align-items: center; }
        .propaganda-text { font-size: 1.2rem; line-height: 1.8; font-weight: 300; }
        .propaganda-text b { color: var(--primary); font-weight: 900; }
 
        /* === FOOTER === */
        .footer-brand { text-align: center; padding: 80px 20px; background: #050505; border-top: 1px solid rgba(255,255,255,0.05); }
        .footer-brand a { color: var(--primary); text-decoration: none; font-weight: 900; font-size: 1.2rem; }
 
        /* === WHATSAPP FLOATING BUTTON === */
        .whatsapp-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 60px;
            height: 60px;
            background-color: #25d366;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.5);
            z-index: 9999;
            transition: 0.3s;
            animation: pulse-wa 2s infinite;
        }
        .whatsapp-btn:hover { transform: scale(1.1); background-color: #128c7e; }
        .whatsapp-btn img { width: 35px; height: 35px; }
        @keyframes pulse-wa {
            0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
            70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
            100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
        }
        
       

        /* === BLOQUE TRANQUILIDAD === */

        .peace-block {
            margin-top: 80px;
            padding: 50px 30px;
            text-align: center;
            background: linear-gradient(145deg, #111, #080808);
            border: 1px solid rgba(255,255,255,0.05);
            border-left: 6px solid var(--primary);
            border-radius: 10px;
            box-shadow: 0 15px 30px rgba(0,0,0,0.6);
        }

        .peace-block p {
            font-size: 1.4rem;
            line-height: 1.8;
            font-weight: 300;
            margin: 0;
        }

        .peace-block span {
            color: var(--primary);
            font-weight: 900;
        }

a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  position: relative;
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 1px;
  background-color: var(--primary);
  opacity: 0.4;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

a:hover::after {
  opacity: 1;
  transform: scaleX(1.1);
}