:root {
      --bg: #f9fafb;
      --card: #ffffff;
      --text: #111827;
      --muted: #6b7280;
      --primary: #2563eb;
      --accent: #7c3aed;
      --radius: 16px;
      --maxw: 1080px;
    }

    body {
      margin: 0;
      font-family: Inter, sans-serif;
      color: var(--text);
      background: var(--bg);
      scroll-behavior: smooth;
    }

    section {
      padding: clamp(48px, 5vw, 96px) 5vw;
      position: relative;
    }

    section {
      min-height: unset;
      /* o eliminar esta propiedad */
    }

    section:nth-of-type(even) {
      background-color: #f3f4f6;
      /* gris claro para modo claro */
    }

    /* MODO OSCURO */
    body.dark section:nth-of-type(even) {
      background-color: #1f2937;
      /* gris oscuro para modo oscuro */
    }


    #inicio {
      background: url('fondo.png') center center / cover no-repeat fixed;
      background-attachment: fixed;
      color: white;
      min-height: 45vh;
      /* Reducido desde 100vh */
      padding: clamp(24px, 4vw, 48px);
      /* Menos padding vertical */
    }

    #inicio h1 {
      font-size: clamp(24px, 4vw, 98px);
      /* Más pequeño */
      margin-top: 98px;
      margin-bottom: 18px;
    }

    #inicio p {
      font-size: clamp(14px, 2.5vw, 25px);
      /* Más chico también */
      max-width: 700px;
      margin: 0 auto;
      margin-bottom: 38px;
    }

    #inicio .overlay {
      background: rgba(0, 0, 0, .45);
      position: absolute;
      inset: 0;
    }

    #inicio .overlay-content {
      position: relative;
      z-index: 2;
      max-width: var(--maxw);
      text-align: center;
    }

    .container {
      width: 100%;
      max-width: var(--maxw);
      margin: auto;
    }

    h1,
    h2 {
      font-family: Poppins, sans-serif;
    }

    h1 {
      font-size: clamp(28px, 5vw, 48px);
      margin: 0 0 12px;
    }

    h2 {
      font-size: clamp(22px, 3.4vw, 32px);
      margin: 0 0 16px;
    }

    .card {
      background: var(--card);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: 0 6px 20px rgba(0, 0, 0, .1);
      opacity: 0;
      transform: translateY(20px);
      transition: all 0.8s ease;
    }

    .card.visible {
      opacity: 1;
      transform: translateY(0);
    }

    .btns {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 18px;
      justify-content: center;
    }

    .btn {
      padding: 12px 18px;
      border-radius: 12px;
      text-decoration: none;
      font-weight: 600;
      transition: 0.2s;
    }

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

    .btn.ghost {
      background: #e5e7eb;
      color: #111827;
    }

    .btn:hover {
      opacity: .85;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: 1fr;
      gap: 24px;
    }

    @media (min-width: 900px) {
      .grid-2 {
        grid-template-columns: 1fr 1fr;
      }
    }

    .dots {
      position: fixed;
      right: 18px;
      top: 50%;
      transform: translateY(-50%);
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #9ca3af;
      display: block;
    }

    .dot.active {
      background: var(--primary);
      transform: scale(1.2);
    }

    footer {
      text-align: center;
      padding: 32px;
      color: var(--muted);
    }

    .btn i {
      margin-right: 8px;
    }

    .btns {
      justify-content: flex-end;
    }


    /* Skills bars */
    .skills {
      margin-top: 12px;
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }

    .skill {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .skill .label {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
      font-size: 0.95rem;
    }

    .skill .bar {
      height: 10px;
      background: #e5e7eb;
      border-radius: 999px;
      overflow: hidden;
    }

    .skill .bar>span {
      display: block;
      height: 100%;
      width: 0;
      background: var(--primary);
      border-radius: inherit;
      transition: width 1s ease;
    }

    /* Softs skills */
    .soft-skills {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .soft-skills span {
      background: #f3f4f6;
      padding: 8px 14px;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 500;
      border: 1px solid #e5e7eb;
    }

    body.dark .soft-skills span {
      background: #1f2937;
      border-color: #374151;
      color: #f3f4f6;
    }

    /* Botonera del héroe */
    #inicio .btns {
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    #inicio .btn {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.4);
      backdrop-filter: blur(6px);
    }

    #inicio .btn:hover {
      background: rgba(255, 255, 255, 0.3);
      color: #111;
    }

    /* efecto suavizado */
    #inicio .btns {
      animation: fadeUp 1s ease forwards;
      opacity: 0;
    }

    @keyframes fadeUp {
      from {
        transform: translateY(20px);
        opacity: 0;
      }

      to {
        transform: translateY(0);
        opacity: 1;
      }
    }


    /* Contact form */
    #contact-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 500px;
      margin: 0 auto;
    }

    #contact-form input,
    #contact-form textarea {
      width: 100%;
      padding: 14px 5px;
      border: 1px solid #d1d5db;
      border-radius: 10px;
      font-size: 1rem;
      outline: none;
      transition: all 0.2s ease;
    }

    #contact-form input:focus,
    #contact-form textarea:focus {
      border-color: #2563eb;
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    }

    #contact-form button {
      background: #2563eb;
      color: #fff;
      padding: 14px;
      border: none;
      border-radius: 10px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s ease;
    }

    #contact-form button:hover {
      background: #1e40af;
    }

    /* Toggle ES/EN */
    .lang-switch {
      position: fixed;
      top: 14px;
      right: 14px;
      background: rgba(255, 255, 255, .8);
      backdrop-filter: blur(8px);
      border: 1px solid #e5e7eb;
      border-radius: 999px;
      padding: 6px 10px;
      display: flex;
      gap: 10px;
      align-items: center;
      z-index: 1000;
    }

    .lang-switch button {
      background: none;
      border: none;
      font-weight: 700;
      cursor: pointer;
      padding: 6px 10px;
      border-radius: 999px;
    }

    .lang-switch button.active {
      background: var(--primary);
      color: white;
    }

    /* Cursos */
    .text-green {
      color: #16a34a;
    }

    .text-blue {
      color: #2563eb;
    }

    .text-purple {
      color: #7c3aed;
    }

    .text-pink {
      color: #db2777;
    }

    .text-orange {
      color: #f97316;
    }

    .text-teal {
      color: #0d9488;
    }

    /* Switch Dark Mode */
    .theme-toggle {
      position: fixed;
      top: 14px;
      left: 14px;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(8px);
      border-radius: 999px;
      padding: 6px 10px;
      border: 1px solid #e5e7eb;
    }

    .theme-toggle button {
      background: none;
      border: none;
      cursor: pointer;
      font-size: 18px;
      color: #111827;
    }

    body.dark .theme-toggle {
      background: rgba(30, 41, 59, 0.8);
      border-color: #334155;
    }

    body.dark .theme-toggle button {
      color: #f1f5f9;
    }


    /* Web Dark */
    body.dark {
      background-color: #0f172a;
      color: #f1f5f9;
      transition: background-color 0.3s ease, color 0.3s ease;
    }

    body.dark .card {
      background: #1e293b;
      color: #f1f5f9;
      border: 1px solid #334155;
    }

    body.dark h2,
    body.dark h3,
    body.dark h4 {
      color: #e2e8f0;
    }

    body.dark .btn {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: #f1f5f9;
    }

    body.dark .btn:hover {
      background: rgba(255, 255, 255, 0.2);
      color: #fff;
    }

    body.dark input,
    body.dark textarea {
      background: #1e293b;
      border: 1px solid #475569;
      color: #f1f5f9;
    }