* {
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', sans-serif;
      margin: 0;
      background: radial-gradient(circle at 20% 20%, #0d0d1a, #000);
      color: #fff;
      overflow-x: hidden;
    }
    
    nav {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 1rem 2rem;
      position: sticky;
      top: 0;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(10px);
      z-index: 1000;
    }
    nav h1 {
      font-size: 1.5rem;
      background: linear-gradient(90deg, #2684ff, #00e6e6);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin: 0;
    }
    .nav-links {
      display: flex;
      gap: 1.5rem;
    }
    .nav-links a {
      text-decoration: none;
      color: #b3b3cc;
      transition: color 0.3s;
    }
    .nav-links a:hover {
      color: #00e6e6;
    }
    .menu-toggle {
      display: none;
      flex-direction: column;
      cursor: pointer;
    }
    .menu-toggle span {
      background: #fff;
      height: 2px;
      width: 25px;
      margin: 4px 0;
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        background: rgba(0, 0, 0, 0.9);
        position: absolute;
        top: 60px;
        right: 0;
        width: 100%;
        text-align: center;
        padding: 1rem 0;
      }
      .nav-links.active {
        display: flex;
      }
      .menu-toggle {
        display: flex;
      }
    }

    header {
      text-align: center;
      padding: 4rem 1rem 3rem;
      position: relative;
    }
    header h2 {
      font-size: 2rem;
      margin-top: 0.5rem;
      color: #b3b3cc;
    }

    .hero {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 10px 10px 50px 10px;
      position: relative;
      z-index: 2;
    }
    .hero video {
      border-radius: 12px;
      box-shadow: 0 0 40px rgba(0, 230, 230, 0.2);
      width: 100%;
      max-width: 500px;
      max-height: 500px;
    }
    .btn-group {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
      justify-content: center;
      margin-top: 2rem;
    }
    .btn {
      padding: 0.9rem 1.8rem;
      border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.2);
      font-size: 1rem;
      color: #fff;
      cursor: pointer;
      transition: all 0.3s ease;
      background: #2684ff;
    }
    .btn.secondary {
      background: transparent;
      border-color: #00e6e6;
    }
    .btn:hover {
      transform: translateY(-3px);
      box-shadow: 0 0 20px rgba(0, 230, 230, 0.3);
    }

    section.about {
      background: linear-gradient(180deg, #001b33, #000a14);
      text-align: center;
      padding: 4rem 1.5rem;
    }
    section.about h2 {
      font-size: 2rem;
      margin-bottom: 1.5rem;
      color: #00e6e6;
    }

    .stats {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 2rem;
      margin-top: 2rem;
      justify-items: center;
    }
    .stat-box {
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: 12px;
      padding: 2rem;
      width: 100%;
      max-width: 300px;
      background: rgba(255,255,255,0.05);
      transition: all 0.3s ease;
    }
    .stat-box:hover {
      transform: scale(1.05);
      box-shadow: 0 0 20px rgba(0,230,230,0.2);
    }

    .countdown {
      text-align: center;
      padding: 3rem 1rem;
      background: repeating-linear-gradient(
        45deg,
        #0d0d1a,
        #0d0d1a 10px,
        #111122 10px,
        #111122 20px
      );
    }
    .countdown h2 {
      font-size: 2rem;
      color: #00e6e6;
    }

    .timer {
        display: flex;
        justify-content: center;
        gap: 1rem;
        margin-top: 2rem;
        flex-wrap: wrap;
    }

    .time-box {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        width: 100px;
        padding: 1rem;
        text-align: center;
        box-shadow: 0 0 20px rgba(0,230,230,0.1);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .time-box:hover {
        transform: scale(1.05);
        box-shadow: 0 0 25px rgba(0,230,230,0.3);
    }

    .time-box span {
        display: block;
        font-size: 2rem;
        font-weight: bold;
        color: #00e6e6;
    }

    .time-box p {
        margin: 0;
        font-size: 0.9rem;
        color: #b3b3cc;
        text-transform: uppercase;
        letter-spacing: 1px;
    }


    footer {
      background: #0a0a14;
      color: #8080a0;
      text-align: center;
      padding: 1.5rem;
      margin-top: 4rem;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255,255,255,0.1);
    }

        /* COMPARATIVA */
    section.comparativa {
      background: radial-gradient(circle at top, #001b33, #000a14);
      padding: 5rem 1.5rem;
      text-align: center;
    }

    section.comparativa h2 {
      font-size: 2rem;
      color: #00e6e6;
      margin-bottom: 2.5rem;
    }

    section.comparativa h2 span {
      color: #fff;
    }

    .tabla-comparativa {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
      max-width: 1000px;
      margin: 0 auto;
    }

    .fila {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      padding: 1.5rem;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: justify;
    }

    .fila:hover {
      transform: translateY(-4px);
      box-shadow: 0 0 25px rgba(0, 230, 230, 0.2);
    }

    .col.no h3 {
      color: #ff4d4d;
      margin: 0;
      font-weight: 600;
    }

    .col.si p {
      color: #b3b3cc;
      margin: 0;
      line-height: 1.5;
      font-size: 0.95rem;
    }

    .col.si strong {
      color: #00e6e6;
      font-weight: 600;
    }

    @media (max-width: 768px) {
      .fila {
        grid-template-columns: 1fr;
        text-align: left;
      }
    }

        /* TRANSPARENCIA Y VISIÓN */
    section.vision {
      background: linear-gradient(180deg, #000a14, #001b33);
      padding: 5rem 1.5rem;
      text-align: center;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .vision-content {
      max-width: 800px;
    }

    section.vision h2 {
      color: #00e6e6;
      font-size: 2rem;
      margin-bottom: 1.5rem;
    }

    section.vision p {
      color: #b3b3cc;
      font-size: 18px;
      line-height: 1.7;
      margin-bottom: 1.5rem;
      text-align: justify
    }

    section.vision strong {
      color: #00e6e6;
      font-weight: 600;
    }

    section.vision .btn {
      margin-top: 1rem;
      background: #2684ff;
      border: none;
    }

    section.vision .btn:hover {
      background: #00e6e6;
      color: #000;
    }

    .alerta-error, .alerta-info {
  text-align: center;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.95rem;
  animation: fadeIn 0.4s ease;
}

.alerta-error {
  background: rgba(255, 80, 80, 0.15);
  border: 1px solid rgba(255, 80, 80, 0.4);
  color: #ff7b7b;
}

.alerta-info {
  background: rgba(76, 201, 240, 0.15);
  border: 1px solid rgba(76, 201, 240, 0.4);
  color: #4cc9f0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

.login-section .access-section {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    background: linear-gradient(135deg, #0a0f2c, #1a2b5a);
    min-height: 100vh;
  }

  .login-container .access-container {
    max-width: 420px;
    width: 100%;
  }

  .login-card .access-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    color: #fff;
  }

  .login-card h2 .access-card h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #fff;
  }

  .intro-text {
    text-align: center;
    color: #d1d5db;
    font-size: 0.95rem;
    margin-bottom: 30px;
  }

  .input-group {
    margin-bottom: 20px;
  }

  .input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #cfd4e1;
  }

  .input-group input {
    width: 100% !important;
    padding: 12px 14px;
    border-radius: 10px;
    border: none;
    outline: none;
    background: rgba(255,255,255,0.15);
    color: #fff;
    font-size: 1rem;
  }

  .input-group input::placeholder {
    color: #bbb;
  }

  .options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    font-size: 0.9rem;
  }

  .remember input {
    margin-right: 6px;
  }

  .forgot {
    color: #4cc9f0;
    text-decoration: none;
  }

  .forgot:hover {
    text-decoration: underline;
  }

  .btn-login, .btn-access {
    width: 100%;
    padding: 14px;
    background: #4cc9f0;
    color: #0a0f2c;
    border: none;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.3s ease;
  }

  .btn-login:hover, .btn-access:hover {
    background: #3bb0d4;
  }

  .register-text {
    text-align: center;
    margin-top: 25px;
    font-size: 0.9rem;
  }

  .register-text a {
    color: #4cc9f0;
    text-decoration: none;
    font-weight: 600;
  }

  .register-text a:hover {
    text-decoration: underline;
  }