:root {
    --primary-color: #212529;
    --secondary-color: #495057;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #adb5bd;
  }

  body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--dark-color);
    background-color: var(--light-color);
  }

  .navbar {
    background-color: var(--dark-color) !important;
  }

  .hero {
    background: linear-gradient(rgba(33, 37, 41, 0.8), rgba(33, 37, 41, 0.9)),
      url("https://images.unsplash.com/photo-1555066931-4365d14bab8c?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80");
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    color: white;
  }

  .section-title {
    position: relative;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
  }

  .section-title::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0 auto;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
  }

  .card {
    border: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 2rem;
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  }

  .skill-item {
    background-color: white;
    border-radius: 5px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
  }

  .skill-item:hover {
    transform: translateY(-5px);
  }

  .skill-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
  }

  .project-item {
    position: relative;
    overflow: hidden;
    border-radius: 5px;
    margin-bottom: 30px;
  }

  .project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(33, 37, 41, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .project-item:hover .project-overlay {
    opacity: 1;
  }

  .product-card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
  }

  .btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
  }

  .btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
  }

  .btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
  }

  .btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
  }

  footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 0;
  }

  .social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    margin-right: 10px;
    transition: background-color 0.3s ease;
  }

  .social-icons a:hover {
    background-color: var(--gray-color);
    color: var(--dark-color);
  }

  .contact-info i {
    margin-right: 10px;
    color: var(--gray-color);
  }

  /* Estilos para el formulario de contacto */
  .modal-form .form-group {
    margin-bottom: 1rem;
  }

  .modal-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
  }

  .modal-form input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #dee2e6;
    border-radius: 4px;
  }

  .modal-form .btn-login {
    width: 100%;
    margin-top: 1rem;
    padding: 0.75rem;
  }











  /* Estilos para las cards de proyectos con paleta de grises */
.project-card {
    transition: all 0.4s ease;
    border-radius: 15px !important;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0,0,0,0.4) !important;
}

.project-card.bg-dark {
    background: linear-gradient(135deg, #212529 0%, #343a40 100%) !important;
    border: 2px solid #495057 !important;
}

.project-card:hover.bg-dark {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%) !important;
    border-color: #6c757d !important;
}

.project-card .card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff !important;
}

.project-card .btn {
    transition: all 0.3s ease;
    font-weight: 600;
    border-width: 2px;
}

.project-card .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Botones específicos con paleta de grises */
.project-card .btn-outline-light {
    border-color: #f8f9fa;
    color: #f8f9fa;
}

.project-card .btn-outline-light:hover {
    background-color: #f8f9fa;
    color: #212529;
    border-color: #f8f9fa;
}

.project-card .btn-light {
    background-color: #f8f9fa;
    border-color: #f8f9fa;
    color: #212529;
}

.project-card .btn-light:hover {
    background-color: #e9ecef;
    border-color: #e9ecef;
    color: #212529;
    transform: translateY(-2px) scale(1.05);
}

.project-card .btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
    color: #ffffff;
}

.project-card .btn-secondary:hover {
    background-color: #5a6268;
    border-color: #545b62;
    color: #ffffff;
    transform: translateY(-2px) scale(1.05);
}

/* Badges personalizados con escala de grises */
.project-card .badge {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.5rem 0.8rem;
}

.project-card .badge.bg-light {
    background-color: #f8f9fa !important;
    color: #212529 !important;
    border: 1px solid #dee2e6;
}

.project-card .badge.bg-secondary {
    background-color: #6c757d !important;
    color: #ffffff !important;
    border: 1px solid #5a6268;
}

/* Botón de toggle con paleta de grises */
#toggleProjectsBtn {
    transition: all 0.3s ease;
    font-weight: 600;
    padding: 12px 30px;

}

#toggleProjectsBtn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

#toggleProjectsBtn.btn-dark {
    background: linear-gradient(135deg, #212529 0%, #343a40 100%);
    border-color: #495057;
    color: #ffffff;
}

#toggleProjectsBtn.btn-dark:hover {
    background: linear-gradient(135deg, #343a40 0%, #495057 100%);
    border-color: #6c757d;
}

#toggleProjectsBtn.btn-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #5a6268 100%);
    border-color: #545b62;
    color: #ffffff;
}

#toggleProjectsBtn.btn-secondary:hover {
    background: linear-gradient(135deg, #5a6268 0%, #495057 100%);
    border-color: #495057;
}

/* Iconos con colores ajustados */
.project-card .fas, .project-card .fab {
    font-size: 1rem;
}

.fa-star.text-warning {
    color: #ffc107 !important;
    filter: drop-shadow(0 0 3px rgba(255, 193, 7, 0.5));
}

.fa-code-branch.text-light {
    color: #f8f9fa !important;
}

/* Textos con mejor contraste */
.project-card .text-light {
    color: #f8f9fa !important;
}

.project-card .text-muted {
    color: #adb5bd !important;
}

/* Animaciones */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

#additionalProjects {
    animation: slideInUp 0.6s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .project-card .d-md-flex {
        flex-direction: column !important;
    }

    .project-card .btn {
        margin-bottom: 0.5rem;
        font-size: 0.9rem;
    }

    .project-card .btn:last-child {
        margin-bottom: 0;
    }

    #toggleProjectsBtn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .project-card:hover {
        transform: translateY(-5px) scale(1.01);
    }
}

/* Efectos de texto mejorados */
.project-card .card-text {
    line-height: 1.6;
}

/* Sección title con línea decorativa gris */
.section-title {
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #343a40 0%, #6c757d 100%);
    border-radius: 2px;
}

/* Hover effects mejorados para la paleta de grises */
.project-card:hover .badge.bg-light {
    background-color: #e9ecef !important;
    transform: scale(1.05);
}

.project-card:hover .badge.bg-secondary {
    background-color: #5a6268 !important;
    transform: scale(1.05);
}

/* Botón de GitHub con estilo consistente */
.btn-outline-dark {
    border-color: #343a40;
    color: #343a40;
}

.btn-outline-dark:hover {
    background-color: #343a40;
    border-color: #343a40;
    color: #ffffff;
}