:root {
    --ink: #e8ecf3;
    --ink-soft: #8e96ab;
    --cream: #0f1320;
    --cream-2: #1c2233;
    --coral: #ff6b60;
    --blue: #5b82ff;
    --teal: #18c9a9;
    --gold: #f5c451;
    --violet: #9b6bff;
    --cyan: #4dd0ff;
    --card: #161b29;
    --line: rgba(255, 255, 255, .1);
    --shadow: 0 24px 60px rgba(0, 0, 0, .5);
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'Hanken Grotesk', sans-serif;
    background: var(--cream);
    color: var(--ink);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

  /* Animated gradient mesh background */
  .mesh {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
  }

  .blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: .3;
    animation: float 18s ease-in-out infinite;
  }

  .blob.a {
    width: 520px;
    height: 520px;
    background: var(--blue);
    top: -120px;
    left: -80px;
  }

  .blob.b {
    width: 460px;
    height: 460px;
    background: var(--teal);
    top: 30%;
    right: -120px;
    animation-delay: -6s;
  }

  .blob.c {
    width: 400px;
    height: 400px;
    background: #4dd0ff;
    bottom: -100px;
    left: 20%;
    animation-delay: -11s;
  }

  @keyframes float {

    0%,
    100% {
      transform: translate(0, 0) scale(1);
    }

    33% {
      transform: translate(40px, -50px) scale(1.1);
    }

    66% {
      transform: translate(-30px, 40px) scale(.95);
    }
  }

  .grain {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: .06;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  }

  /* Layout */
  .wrap {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 28px;
  }

  section {
    padding: 110px 0;
  }

  /* NAV */
  nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    background: rgba(15, 19, 32, .72);
    border-bottom: 1.5px solid var(--line);
  }

  nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .logo {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -.02em;
    background: linear-gradient(110deg, var(--blue), var(--teal) 55%, #4dd0ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    width: fit-content;
  }

  .logo span {
    color: inherit;
  }

  .nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
  }

  .nav-links a {
    text-decoration: none;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: .95rem;
    position: relative;
    transition: color .2s;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    height: 2px;
    width: 0;
    background: var(--blue);
    transition: width .25s;
  }

  .nav-links a:hover {
    color: var(--ink);
  }

  .nav-links a:hover::after {
    width: 100%;
  }

  /* Menú desplegable "Recursos" */
  .dropdown {
    position: relative;
  }

  .dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: .95rem;
    font-family: inherit;
    transition: color .2s;
  }

  .dropdown-toggle:hover {
    color: var(--ink);
  }

  .caret {
    transition: transform .25s;
  }

  .dropdown.open .dropdown-toggle {
    color: var(--ink);
  }

  .dropdown.open .caret {
    transform: rotate(180deg);
  }

  .dropdown-menu {
    position: absolute;
    top: calc(100% + 14px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    min-width: 210px;
    list-style: none;
    padding: 8px;
    margin: 0;
    background: rgba(20, 25, 40, .97);
    backdrop-filter: blur(14px);
    border: 1.5px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 18px 44px rgba(0, 0, 0, .5);
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
  }

  .dropdown.open .dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }

  .dropdown-menu li {
    padding: 0;
  }

  .dropdown-menu a {
    display: block;
    padding: 10px 14px;
    border-radius: 9px;
    color: var(--ink-soft);
    font-size: .92rem;
    font-weight: 500;
    text-decoration: none;
    transition: background .18s, color .18s;
  }

  .dropdown-menu a::after {
    display: none;
  }

  .dropdown-menu a:hover {
    background: rgba(255, 255, 255, .06);
    color: var(--ink);
  }

  /* Botón hamburguesa (oculto en escritorio) */
  .nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    padding: 0;
  }

  .nav-toggle span {
    display: block;
    position: absolute;
    height: 2.5px;
    width: 100%;
    left: 0;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .3s, opacity .3s, top .3s;
  }

  .nav-toggle span:nth-child(1) {
    top: 3px;
  }

  .nav-toggle span:nth-child(2) {
    top: 11px;
  }

  .nav-toggle span:nth-child(3) {
    top: 19px;
  }

  .nav-toggle.open span:nth-child(1) {
    top: 11px;
    transform: rotate(45deg);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    top: 11px;
    transform: rotate(-45deg);
  }

  @media (max-width: 680px) {
    .nav-toggle {
      display: block;
    }

    .nav-links {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      flex-direction: column;
      gap: 0;
      background: rgba(15, 19, 32, .96);
      backdrop-filter: blur(12px);
      border-bottom: 1.5px solid var(--line);
      padding: 8px 28px 18px;
      transform: translateY(-12px);
      opacity: 0;
      pointer-events: none;
      transition: transform .25s ease, opacity .25s ease;
    }

    .nav-links.open {
      transform: translateY(0);
      opacity: 1;
      pointer-events: auto;
    }

    .nav-links li {
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
    }

    .nav-links li:last-child {
      border-bottom: none;
    }

    .nav-links a {
      font-size: 1.05rem;
      display: block;
    }

    nav .wrap {
      position: relative;
    }

    /* Desplegable dentro del menú móvil: lista anidada, no flotante */
    .dropdown-toggle {
      font-size: 1.05rem;
      width: 100%;
      justify-content: space-between;
    }

    .dropdown-menu {
      position: static;
      transform: none;
      opacity: 1;
      pointer-events: auto;
      min-width: 0;
      background: none;
      backdrop-filter: none;
      border: none;
      box-shadow: none;
      padding: 0;
      max-height: 0;
      overflow: hidden;
      transition: max-height .28s ease;
    }

    .dropdown.open .dropdown-menu {
      transform: none;
      max-height: 320px;
    }

    .dropdown-menu li {
      padding: 0 !important;
      border: none !important;
    }

    .dropdown-menu a {
      padding: 12px 0 12px 16px;
      font-size: .98rem;
      color: var(--ink-soft);
    }

    .dropdown-menu a:hover {
      background: none;
    }
  }

  /* HERO */
  .hero {
    padding: 130px 0 90px;
  }

  .pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--card);
    border: 1.5px solid var(--line);
    padding: 7px 16px;
    border-radius: 100px;
    font-size: .85rem;
    font-weight: 600;
    box-shadow: 0 8px 28px rgba(0, 0, 0, .4);
  }

  .pill .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--teal);
    box-shadow: 0 0 0 4px rgba(11, 184, 154, .2);
  }

  .hero h1 {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-weight: 800;
    font-size: clamp(2.8rem, 8vw, 5.6rem);
    line-height: .98;
    letter-spacing: -.03em;
    margin: 26px 0 20px;
  }

  .hero h1 em {
    font-style: normal;
    background: linear-gradient(110deg, var(--blue), var(--teal) 55%, #4dd0ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .hero p.lead {
    font-size: 1.25rem;
    color: var(--ink-soft);
    max-width: 540px;
  }

  .cta-row {
    display: flex;
    gap: 14px;
    margin-top: 36px;
    flex-wrap: wrap;
  }

  .btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 14px 26px;
    border-radius: 14px;
    transition: transform .15s, box-shadow .15s;
  }

  .btn-primary {
    background: var(--ink);
    color: var(--cream);
    box-shadow: 6px 6px 0 var(--blue);
  }

  .btn-primary:hover {
    transform: translate(-2px, -2px);
    box-shadow: 9px 9px 0 var(--blue);
  }

  .btn-ghost {
    background: transparent;
    color: var(--ink);
    border: 1.5px solid var(--ink);
  }

  .btn-ghost:hover {
    background: var(--ink);
    color: var(--cream);
  }

  /* Section headers */
  .sec-head {
    margin-bottom: 50px;
  }

  .sec-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: .82rem;
    font-weight: 600;
    color: var(--blue);
    letter-spacing: .05em;
    text-transform: uppercase;
  }

  .sec-head h2 {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 3rem);
    letter-spacing: -.02em;
    margin-top: 8px;
  }

  /* ABOUT */
  .about-grid {
    display: flex;
    flex-direction: column;
    gap: 48px;
  }

  .about-intro {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 44px;
    align-items: center;
  }

  .about-bio {
    align-self: center;
  }

  .about-extra {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 50px;
    align-items: start;
  }

  @media (max-width: 760px) {
    .about-intro {
      grid-template-columns: 1fr;
      gap: 28px;
      justify-items: center;
      text-align: center;
    }

    .about-bio {
      text-align: left;
    }

    .about-extra {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }

  .about-grid p {
    font-size: 1.1rem;
    color: var(--ink-soft);
    margin-bottom: 18px;
  }

  .about-bio p:last-child {
    margin-bottom: 0;
  }

  .skills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
  }

  .chip {
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: 10px;
    padding: 8px 14px;
    font-size: .9rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    transition: transform .15s, border-color .15s;
  }

  .chip:hover {
    transform: translateY(-3px);
    border-color: var(--blue);
  }

  .stat-card {
    background: var(--card);
    border-radius: 20px;
    padding: 28px;
    border: 1.5px solid var(--line);
    box-shadow: var(--shadow);
  }

  /* Foto de perfil */
  .avatar-wrap {
    width: 100%;
    max-width: 260px;
    aspect-ratio: 1;
    border-radius: 50%;
    padding: 5px;
    background: linear-gradient(135deg, var(--blue), var(--teal) 55%, var(--cyan));
    box-shadow: 0 16px 44px rgba(0, 0, 0, .45);
  }

  .avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    display: block;
    background: var(--cream-2);
  }

  /* Estado vacío: marcador de posición mientras no haya foto */
  .avatar-empty {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .avatar-empty::after {
    content: 'Tu foto aquí';
    font-family: 'JetBrains Mono', monospace;
    font-size: .8rem;
    color: var(--ink-soft);
    text-align: center;
    padding: 0 12px;
  }

  .stat {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1.5px dashed rgba(255, 255, 255, .14);
  }

  .stat:last-child {
    border: none;
  }

  .stat b {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 2rem;
    font-weight: 800;
  }

  .stat .c1 {
    color: var(--cyan);
  }

  .stat .c2 {
    color: var(--blue);
  }

  .stat .c3 {
    color: var(--teal);
  }

  .stat span {
    color: var(--ink-soft);
    font-size: .95rem;
  }

  /* PROJECTS */
  .proj-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
  }

  @media (max-width: 760px) {
    .proj-grid {
      grid-template-columns: 1fr;
    }
  }

  .proj {
    background: var(--card);
    border-radius: 22px;
    padding: 30px;
    border: 1.5px solid var(--line);
    position: relative;
    overflow: hidden;
    transition: transform .2s, box-shadow .2s;
  }

  .proj::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--blue), var(--cyan));
  }

  .proj:nth-child(2)::before {
    background: linear-gradient(90deg, var(--blue), var(--teal));
  }

  .proj:nth-child(3)::before {
    background: linear-gradient(90deg, var(--cyan), var(--teal));
  }

  .proj:nth-child(4)::before {
    background: linear-gradient(90deg, var(--blue), var(--teal));
  }

  .proj:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 44px rgba(0, 0, 0, .55);
  }

  .proj h3 {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 10px;
  }

  .proj p {
    color: var(--ink-soft);
    margin-bottom: 18px;
  }

  .proj .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
  }

  .proj .tags span {
    font-family: 'JetBrains Mono', monospace;
    font-size: .78rem;
    color: var(--ink-soft);
    background: var(--cream-2);
    padding: 4px 10px;
    border-radius: 6px;
  }

  .proj-links {
    display: flex;
    gap: 18px;
  }

  .proj-links a {
    font-weight: 600;
    font-size: .92rem;
    color: var(--ink);
    text-decoration: none;
    border-bottom: 2px solid var(--blue);
    padding-bottom: 1px;
  }

  .proj-links a:hover {
    color: var(--cyan);
  }

  /* PROJECT THUMBNAIL */
  .proj-thumb {
    position: relative;
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    cursor: pointer;
    aspect-ratio: 16/8;
    background: var(--cream-2);
  }

  .proj-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
    transition: transform .35s ease;
  }

  .proj-thumb-overlay {
    position: absolute;
    inset: 0;
    background: rgba(10, 15, 35, .55);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity .25s;
  }

  .proj-thumb-overlay span {
    color: #fff;
    font-weight: 600;
    font-size: .95rem;
    letter-spacing: .02em;
  }

  .proj-thumb:hover img {
    transform: scale(1.04);
  }

  .proj-thumb:hover .proj-thumb-overlay {
    opacity: 1;
  }

  /* EXPERIENCE timeline */
  .timeline {
    position: relative;
    padding-left: 34px;
  }

  .timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: rgba(255, 255, 255, .14);
  }

  .tl-item {
    position: relative;
    padding-bottom: 44px;
  }

  .tl-item:last-child {
    padding-bottom: 0;
  }

  .tl-item::before {
    content: '';
    position: absolute;
    left: -34px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--cream);
    border: 3px solid var(--blue);
  }

  .tl-item:nth-child(2)::before {
    border-color: var(--blue);
  }

  .tl-item:nth-child(3)::before {
    border-color: var(--teal);
  }

  .tl-item:nth-child(4)::before {
    border-color: var(--cyan);
  }

  .tl-date {
    font-family: 'JetBrains Mono', monospace;
    font-size: .82rem;
    color: var(--ink-soft);
    font-weight: 600;
  }

  .tl-item h3 {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    margin: 4px 0;
  }

  .tl-item .org {
    color: var(--blue);
    font-weight: 600;
    margin-bottom: 8px;
  }

  .tl-item p {
    color: var(--ink-soft);
  }

  /* FORMACIÓN ACADÉMICA */
  .edu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
  }

  @media (max-width: 760px) {
    .edu-grid {
      grid-template-columns: 1fr;
    }
  }

  .edu-card {
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: 18px;
    padding: 28px;
    position: relative;
    overflow: hidden;
    transition: transform .2s, box-shadow .2s, border-color .2s;
  }

  .edu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--blue), var(--teal) 55%, var(--cyan));
  }

  .edu-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 44px rgba(0, 0, 0, .5);
    border-color: rgba(255, 255, 255, .16);
  }

  .edu-icon {
    font-size: 28px;
    margin-bottom: 12px;
  }

  .edu-date {
    font-family: 'JetBrains Mono', monospace;
    font-size: .82rem;
    color: var(--ink-soft);
    font-weight: 600;
  }

  .edu-card h3 {
    font-family: 'Bricolage Grotesque', sans-serif;
    font-size: 1.35rem;
    font-weight: 800;
    margin: 4px 0;
  }

  .edu-card .edu-org {
    color: var(--blue);
    font-weight: 600;
    margin-bottom: 8px;
  }

  .edu-card p {
    color: var(--ink-soft);
  }

  /* CERTIFICACIONES (Credly) */
  .cert-intro {
    color: var(--ink-soft);
    font-size: 1.05rem;
    margin-bottom: 36px;
    max-width: 560px;
  }

  .cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  @media (max-width: 760px) {
    .cert-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 420px) {
    .cert-grid {
      grid-template-columns: 1fr;
    }
  }

  .cert-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    text-align: center;
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: 18px;
    padding: 26px 18px;
    transition: transform .2s, box-shadow .2s, border-color .2s;
  }

  .cert-badge:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 44px rgba(0, 0, 0, .5);
    border-color: rgba(255, 255, 255, .18);
  }

  .cert-badge img {
    width: 120px;
    height: 120px;
    object-fit: contain;
  }

  .cert-badge span {
    color: var(--ink);
    font-weight: 600;
    font-size: .95rem;
    line-height: 1.35;
  }

  /* Marcador mientras no haya imagen de insignia */
  .badge-empty {
    border-radius: 50%;
    background: var(--cream-2);
    border: 2px dashed rgba(255, 255, 255, .18);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .badge-empty::after {
    content: 'Credly';
    font-family: 'JetBrains Mono', monospace;
    font-size: .8rem;
    color: var(--ink-soft);
  }

  /* CONTACT */
  .contact {
    text-align: center;
  }

  .contact .sec-head {
    margin-bottom: 30px;
  }

  .contact h2 {
    font-size: clamp(2.4rem, 7vw, 4.2rem);
  }

  .contact .lead {
    font-size: 1.2rem;
    color: var(--ink-soft);
    max-width: 480px;
    margin: 0 auto 36px;
  }

  .contact-links {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  .clink {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    text-decoration: none;
    font-weight: 600;
    background: var(--card);
    border: 1.5px solid var(--line);
    border-radius: 14px;
    padding: 13px 22px;
    color: var(--ink);
    transition: transform .15s,
      border-color .15s;
  }

  .clink:hover {
    transform: translateY(-3px);
    border-color: var(--blue);
  }

  footer {
    padding: 40px 0 60px;
    text-align: center;
    color: var(--ink-soft);
    font-size: .9rem;
  }

  /* Reveal on load / scroll */
  .reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity .7s ease, transform .7s ease;
  }

  .reveal.in {
    opacity: 1;
    transform: none;
  }

  .hero .reveal:nth-child(1) {
    transition-delay: .05s;
  }

  .hero .reveal:nth-child(2) {
    transition-delay: .15s;
  }

  .hero .reveal:nth-child(3) {
    transition-delay: .25s;
  }

  .hero .reveal:nth-child(4) {
    transition-delay: .35s;
  }