:root {
      --primary: #0f172a;
      --secondary: #1e293b;
      --accent: #facc15;
      --text: #cbd5e1;
      --text-light: #94a3b8;
    }

    body { 
      font-family: 'Inter', sans-serif; 
      background-color: var(--primary); 
      color: var(--text); 
      overflow-x: hidden;
    }

    .font-mono {
      font-family: 'Roboto Mono', monospace;
    }

    .navbar-blur { 
      background-color: rgba(15, 23, 42, 0.8);
      backdrop-filter: blur(12px); 
      -webkit-backdrop-filter: blur(12px); 
    }

    .card-bg {
      background-color: var(--secondary); 
    }

    .highlight-yellow {
      color: var(--accent); 
    }

    /* Estilos para los botones de enlaces */
    .link-card {
      background: rgba(30, 41, 59, 0.7);
      border-radius: 1rem;
      box-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.3);
      overflow: hidden;
      transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
      display: flex;
      flex-direction: column;
      border: 1px solid rgba(255, 255, 255, 0.1);
      position: relative;
      transform-style: preserve-3d;
      perspective: 1000px;
      backdrop-filter: blur(10px);
      padding: 1.5rem;
    }

    .link-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(135deg, rgba(250, 204, 21, 0.1) 0%, transparent 50%);
      opacity: 0;
      transition: opacity 0.4s ease;
      z-index: 1;
      pointer-events: none;
    }

    .link-card:hover {
      transform: translateY(-0.75rem) scale(1.02);
      box-shadow: 0 20px 40px -10px rgba(250, 204, 21, 0.3);
    }

    .link-card:hover::before {
      opacity: 1;
    }

    .link-button {
      display: flex;
      align-items: center;
      justify-content: flex-start;
      padding: 1rem 1.5rem;
      background-color: rgba(71, 85, 105, 0.7);
      color: #f1f5f9;
      text-decoration: none;
      border-radius: 0.75rem;
      font-weight: 600;
      transition: all 0.3s;
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      width: 100%;
    }

    .link-button::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(250, 204, 21, 0.2), transparent);
      transition: left 0.7s ease;
    }

    .link-button:hover {
      background-color: rgba(100, 116, 139, 0.7);
      transform: translateY(-2px);
      border-color: rgba(250, 204, 21, 0.3);
    }

    .link-button:hover::before {
      left: 100%;
    }

    .link-button i {
      margin-right: 12px;
      font-size: 1.4rem;
      width: 24px;
      text-align: center;
      transition: transform 0.3s;
    }

    .link-button:hover i {
      transform: scale(1.15);
    }

    /* Fondo animado con gradientes */
    .animated-bg {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -2;
      background: linear-gradient(-45deg, #0f172a, #1e293b, #0f172a, #1e1b2e);
      background-size: 400% 400%;
      animation: gradient 15s ease infinite;
    }

    @keyframes gradient {
      0% {
        background-position: 0% 50%;
      }
      50% {
        background-position: 100% 50%;
      }
      100% {
        background-position: 0% 50%;
      }
    }

    /* Efectos especiales para tarjetas */
    .card-glow {
      position: absolute;
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
      background: radial-gradient(circle at center, rgba(250, 204, 21, 0.15) 0%, transparent 70%);
      opacity: 0;
      transition: opacity 0.4s ease;
      pointer-events: none;
      z-index: 0;
    }

    .link-card:hover .card-glow {
      opacity: 1;
    }

    /* Animación de partículas mejorada */
    .particles-container {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: -1;
      pointer-events: none;
    }

    .particle {
      position: absolute;
      width: 4px;
      height: 4px;
      background-color: var(--accent);
      border-radius: 50%;
      opacity: 0;
      box-shadow: 0 0 10px var(--accent);
    }

    /* Efecto de texto brillante */
    .glow-text {
      text-shadow: 0 0 10px rgba(250, 204, 21, 0.7);
    }

    /* Animación de entrada para elementos */
    .fade-in-up {
      opacity: 0;
      transform: translateY(30px);
    }

    /* Modo toggle */
    .mode-toggle {
      background-color: rgba(30, 41, 59, 0.7);
      color: var(--text);
      padding: 0.75rem 1.5rem;
      border-radius: 0.5rem;
      font-weight: 600;
      transition: all 0.3s ease;
      border: 1px solid rgba(250, 204, 21, 0.2);
      position: relative;
      overflow: hidden;
      cursor: pointer;
    }

    .mode-toggle::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(250, 204, 21, 0.2), transparent);
      transition: left 0.5s;
    }

    .mode-toggle:hover::before {
      left: 100%;
    }

    .mode-toggle:hover {
      background-color: rgba(30, 41, 59, 0.9);
      border-color: rgba(250, 204, 21, 0.5);
      transform: translateY(-2px);
    }

    /* Estilos para el perfil */
    .profile-picture {
      width: 140px;
      height: 140px;
      border-radius: 50%;
      border: 4px solid var(--accent);
      object-fit: cover;
      margin: 0 auto;
      box-shadow: 0 6px 20px rgba(250, 204, 21, 0.3);
      transition: all 0.3s ease;
    }

    .profile-picture:hover {
      transform: scale(1.05);
      box-shadow: 0 10px 30px rgba(250, 204, 21, 0.5);
    }

    /* Estilos del Modal (Ventana Pop-up) */
    .modal {
      display: none;
      position: fixed;
      z-index: 1000;
      left: 0;
      top: 0;
      width: 100%;
      height: 100%;
      overflow: auto;
      background-color: rgba(0,0,0,0.5);
      justify-content: center;
      align-items: center;
      backdrop-filter: blur(5px);
    }

    .modal-content {
      background-color: var(--secondary);
      padding: 30px;
      border-radius: 16px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.25);
      width: 90%;
      max-width: 500px;
      position: relative;
      animation: modal-appear 0.4s ease-out;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    @keyframes modal-appear {
      from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
      }
      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    .close-button {
      color: #aaa;
      position: absolute;
      top: 15px;
      right: 20px;
      font-size: 28px;
      font-weight: bold;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .close-button:hover,
    .close-button:focus {
      color: var(--accent);
      transform: rotate(90deg);
    }