body {
      margin: 0;
      font-family: 'Montserrat', sans-serif;
      background-color: #ffffff;
      color: #000;
    }
    header {
      background-color: #000;
      color: white;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 30px;
    }
    header h1 {
      font-size: 1.8rem;
      letter-spacing: 2px;
    }
    nav a {
      color: white;
      text-decoration: none;
      margin-left: 20px;
      font-weight: 500;
    }
    nav a:hover {
      color: #d4bfa3; /* beige */
    }
    .baner img {
      width: 100%;
      max-width: 800px;
      border-radius: 10px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    }
    .hero {
      background-color: #f5f2eb;
      text-align: center;
      padding: 60px 20px;
    }
    .hero h2 {
      font-size: 2rem;
      margin-bottom: 10px;
    }
    .hero p {
      font-size: 1.1rem;
      color: #444;
    }
    .catalogo {
      padding: 50px 20px;
      text-align: center;
    }
    .catalogo h2 {
      margin-bottom: 40px;
      font-size: 1.8rem;
    }
    .productos {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 25px;
      max-width: 1100px;
      margin: 0 auto;
    }
    .producto {
      background-color: #fff;
      border: 1px solid #eee;
      border-radius: 10px;
      overflow: hidden;
      transition: transform 0.3s;
    }
    .producto:hover {
      transform: scale(1.03);
    }
    .producto img {
      width: 100%;
      height: 280px;
      object-fit: cover;
    }
    .producto h3 {
      margin: 15px 0 5px;
    }
    .producto p {
      color: #555;
      margin: 0 0 15px;
    }
    .producto .precio {
      font-weight: bold;
      margin-bottom: 15px;
      color: #000;
    }
    footer {
      background-color: #000;
      color: white;
      text-align: center;
      padding: 15px;
      margin-top: 50px;
    }
    @media(max-width:600px){
      header h1 {
        font-size: 1.4rem;
      }
      nav a {
        margin-left: 10px;
        font-size: 0.9rem;
      }
    }

    .registro-form {
      max-width: 420px;
      margin: 48px auto;
      padding: 28px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow: 0 8px 30px rgba(2,6,23,0.6), inset 0 1px 0 rgba(255,255,255,0.02);
      backdrop-filter: blur(10px) saturate(120%);
      -webkit-backdrop-filter: blur(10px) saturate(120%);
      color: #e8f9ff;
      position: relative;
      overflow: hidden;
      transition: transform 250ms ease;
    }
    .registro-form::before{
      content: "";
      position: absolute;
      left: -40%;
      top: -30%;
      width: 200%;
      height: 160%;
      background: radial-gradient(circle at 10% 10%, rgba(0,200,255,0.08), transparent 10%),
                  linear-gradient(120deg, rgba(120, 80, 255, 0.04), rgba(0,200,255,0.04));
      transform: rotate(-12deg);
      pointer-events: none;
    }
    .registro-form:hover { transform: translateY(-4px); }

    .registro-form label {
      display: block;
      margin-bottom: 6px;
      font-weight: 600;
      font-size: 0.85rem;
      color: rgba(230,249,255,0.95);
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    .registro-form input {
      width: 100%;
      padding: 10px 12px;
      margin-bottom: 14px;
      border-radius: 10px;
      border: 1px solid rgba(255,255,255,0.08);
      background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
      color: #eaf9ff;
      outline: none;
      transition: box-shadow 180ms ease, border-color 180ms ease, transform 180ms ease;
      backdrop-filter: blur(4px);
    }
    .registro-form input::placeholder {
      color: rgba(234,249,255,0.5);
    }
    .registro-form input:focus {
      border-color: rgba(0,200,255,0.9);
      box-shadow: 0 6px 20px rgba(0,200,255,0.08), 0 0 10px rgba(0,200,255,0.12);
      transform: translateY(-2px);
    }

    .registro-form button {
      width: 100%;
      padding: 12px;
      border-radius: 10px;
      background: linear-gradient(90deg, rgba(0,200,255,0.14), rgba(120,80,255,0.12));
      color: #00121a;
      border: 1px solid rgba(0,200,255,0.15);
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      cursor: pointer;
      box-shadow: 0 8px 30px rgba(0,200,255,0.06), 0 2px 6px rgba(0,0,0,0.3);
      transition: transform 160ms ease, box-shadow 160ms ease;
    }
    .registro-form button:hover {
      transform: translateY(-3px);
      box-shadow: 0 16px 50px rgba(0,200,255,0.12);
    }

    /* Responsive: tablet / móvil — ajustes para .registro-form */
@media (max-width: 900px) {
  .registro-form {
    max-width: 520px;
    margin: 36px 20px;
    padding: 22px;
  }
  .registro-form input,
  .registro-form button {
    font-size: 0.95rem;
  }
}

@media (max-width: 600px) {
  .registro-form {
    max-width: 100%;
    margin: 20px 12px;
    padding: 16px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
    box-shadow: 0 6px 20px rgba(2,6,23,0.45), inset 0 1px 0 rgba(255,255,255,0.01);
  }
  .registro-form::before {
    left: -60%;
    top: -40%;
    width: 220%;
    height: 180%;
    background: radial-gradient(circle at 8% 8%, rgba(0,200,255,0.06), transparent 8%),
                linear-gradient(120deg, rgba(120, 80, 255, 0.03), rgba(0,200,255,0.03));
    transform: rotate(-8deg);
  }
  .registro-form label {
    font-size: 0.75rem;
    margin-bottom: 4px;
  }
  .registro-form input {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 10px;
  }
  .registro-form input::placeholder {
    font-size: 0.9rem;
  }
  .registro-form button {
    padding: 11px;
    font-size: 0.9rem;
    border-radius: 10px;
  }
}

/* Pequeños ajustes para pantallas muy pequeñas (teléfonos estrechos) */
@media (max-width: 380px) {
  .registro-form {
    margin: 14px 10px;
    padding: 12px;
    border-radius: 10px;
  }
  .registro-form h2 { font-size: 1.1rem; }
  .registro-form label { letter-spacing: 0.6px; }
  .registro-form input,
  .registro-form button { padding: 10px; font-size: 0.88rem; }
}