:root {
      --bg:        #0a0c0f;
      --bg2:       #0f1215;
      --bg3:       #141820;
      --border:    #1e2530;
      --green:     #00ff88;
      --cyan:      #00d4ff;
      --amber:     #ffb800;
      --text:      #c8d6e5;
      --muted:     #5a6a7a;
      --mono:      'Space Mono', monospace;
      --sans:      'Syne', sans-serif;
    }

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

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--sans);
      overflow-x: hidden;
    }

    /* ── NOISE OVERLAY ── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
      opacity: 0.025;
      pointer-events: none;
      z-index: 9999;
    }

    /* ── SCROLLBAR ── */
    ::-webkit-scrollbar { width: 4px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: var(--green); border-radius: 2px; }

    /* ── NAVBAR ── */
    #navbar {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 1000;
      padding: 1rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid transparent;
      transition: all 0.3s;
    }
    #navbar.scrolled {
      background: rgba(10,12,15,0.92);
      backdrop-filter: blur(12px);
      border-color: var(--border);
    }
    .nav-logo {
      font-family: var(--mono);
      font-size: 0.9rem;
      color: var(--green);
      text-decoration: none;
    }
    .nav-logo span { color: var(--muted); }
    .nav-links { display: flex; gap: 2rem; list-style: none; }
    .nav-links a {
      font-family: var(--mono);
      font-size: 0.75rem;
      color: var(--muted);
      text-decoration: none;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      transition: color 0.2s;
    }
    .nav-links a:hover { color: var(--green); }
    .nav-links a::before { content: '// '; color: var(--border); }

    /* ── HERO ── */
    #hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      padding: 6rem 0 4rem;
      overflow: hidden;
    }

    /* Grid background */
    #hero::after {
      content: '';
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(0,255,136,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,255,136,0.03) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
    }

    /* Glow orb */
    .hero-orb {
      position: absolute;
      width: 600px; height: 600px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(0,255,136,0.07) 0%, transparent 70%);
      top: 50%; left: 60%;
      transform: translate(-50%, -50%);
      pointer-events: none;
    }

    .hero-tag {
      font-family: var(--mono);
      font-size: 0.75rem;
      color: var(--green);
      letter-spacing: 0.15em;
      text-transform: uppercase;
      margin-bottom: 1.5rem;
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .hero-tag::before {
      content: '';
      width: 40px; height: 1px;
      background: var(--green);
      display: inline-block;
    }

    .hero-name {
      font-family: var(--sans);
      font-size: clamp(3rem, 8vw, 7rem);
      font-weight: 800;
      line-height: 0.95;
      letter-spacing: -0.02em;
      margin-bottom: 1rem;
    }
    .hero-name .line2 {
      color: transparent;
      -webkit-text-stroke: 1px rgba(200,214,229,0.3);
    }

    .hero-typewriter {
      font-family: var(--mono);
      font-size: 1rem;
      color: var(--cyan);
      margin-bottom: 2rem;
      min-height: 1.5rem;
    }
    .cursor {
      display: inline-block;
      width: 2px; height: 1.1em;
      background: var(--cyan);
      margin-left: 2px;
      vertical-align: middle;
      animation: blink 1s step-end infinite;
    }
    @keyframes blink { 50% { opacity: 0; } }

    .hero-desc {
      color: var(--muted);
      font-size: 1rem;
      line-height: 1.7;
      max-width: 480px;
      margin-bottom: 2.5rem;
    }

    .btn-primary-custom {
      font-family: var(--mono);
      font-size: 0.8rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 0.85rem 2rem;
      background: var(--green);
      color: var(--bg);
      border: none;
      text-decoration: none;
      display: inline-block;
      transition: all 0.2s;
      position: relative;
      overflow: hidden;
    }
    .btn-primary-custom::after {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(255,255,255,0.15);
      transform: translateX(-100%);
      transition: transform 0.3s;
    }
    .btn-primary-custom:hover { color: var(--bg); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,255,136,0.25); }
    .btn-primary-custom:hover::after { transform: translateX(0); }

    .btn-outline-custom {
      font-family: var(--mono);
      font-size: 0.8rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      padding: 0.85rem 2rem;
      border: 1px solid var(--border);
      color: var(--text);
      text-decoration: none;
      display: inline-block;
      transition: all 0.2s;
    }
    .btn-outline-custom:hover { border-color: var(--cyan); color: var(--cyan); }

    .hero-stats {
      display: flex;
      gap: 2.5rem;
      margin-top: 4rem;
      padding-top: 2rem;
      border-top: 1px solid var(--border);
    }
    .stat-num {
      font-family: var(--mono);
      font-size: 2rem;
      font-weight: 700;
      color: var(--green);
      display: block;
      line-height: 1;
    }
    .stat-label {
      font-family: var(--mono);
      font-size: 0.7rem;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-top: 0.25rem;
      display: block;
    }

    /* ── TERMINAL CARD (hero right) ── */
    .terminal-card {
      background: var(--bg2);
      border: 1px solid var(--border);
      border-radius: 8px;
      overflow: hidden;
      font-family: var(--mono);
      font-size: 0.82rem;
    }
    .terminal-header {
      background: var(--bg3);
      padding: 0.75rem 1rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      border-bottom: 1px solid var(--border);
    }
    .t-dot { width: 10px; height: 10px; border-radius: 50%; }
    .t-red { background: #ff5f57; }
    .t-yellow { background: #febc2e; }
    .t-green { background: #28c840; }
    .terminal-title { color: var(--muted); font-size: 0.7rem; margin-left: auto; }
    .terminal-body { padding: 1.25rem; line-height: 2; }
    .t-prompt { color: var(--green); }
    .t-cmd { color: var(--text); }
    .t-out { color: var(--muted); }
    .t-key { color: var(--cyan); }
    .t-val { color: var(--amber); }
    .t-comment { color: #3a4a5a; }

    /* ── SECTION BASE ── */
    section { padding: 6rem 0; }
    .section-label {
      font-family: var(--mono);
      font-size: 0.7rem;
      color: var(--green);
      text-transform: uppercase;
      letter-spacing: 0.2em;
      margin-bottom: 0.5rem;
    }
    .section-title {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 800;
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 1rem;
    }
    .section-line {
      width: 40px; height: 2px;
      background: var(--green);
      margin-bottom: 3rem;
    }

    /* ── ABOUT ── */
    #about { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

    .about-photo-wrap {
      position: relative;
      display: inline-block;
    }
    .about-photo-wrap::before {
      content: '';
      position: absolute;
      inset: -8px;
      border: 1px solid var(--green);
      opacity: 0.4;
      transform: translate(8px, 8px);
      z-index: 0;
    }
    .about-photo {
      width: 100%;
      max-width: 340px;
      aspect-ratio: 1;
      object-fit: cover;
      display: block;
      filter: grayscale(30%);
      position: relative;
      z-index: 1;
      border: 1px solid var(--border);
    }
    /* Placeholder si no hay foto */
    .about-photo-placeholder {
      width: 100%;
      max-width: 340px;
      aspect-ratio: 1;
      background: var(--bg3);
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      position: relative;
      z-index: 1;
      color: var(--muted);
      font-family: var(--mono);
      font-size: 0.75rem;
    }
    .about-photo-placeholder i { font-size: 3rem; margin-bottom: 0.5rem; color: var(--border); }

    .about-text p {
      color: var(--muted);
      line-height: 1.8;
      margin-bottom: 1rem;
    }
    .about-text p strong { color: var(--text); }

    .badge-stack {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-top: 1.5rem;
    }
    .badge-item {
      font-family: var(--mono);
      font-size: 0.7rem;
      padding: 0.3rem 0.75rem;
      border: 1px solid var(--border);
      color: var(--muted);
      letter-spacing: 0.05em;
      transition: all 0.2s;
    }
    .badge-item:hover { border-color: var(--green); color: var(--green); }

    /* ── SKILLS ── */
    #skills { background: var(--bg); }

    .skill-group {
      margin-bottom: 2.5rem;
    }
    .skill-group-title {
      font-family: var(--mono);
      font-size: 0.7rem;
      color: var(--cyan);
      text-transform: uppercase;
      letter-spacing: 0.15em;
      margin-bottom: 1rem;
      padding-bottom: 0.5rem;
      border-bottom: 1px solid var(--border);
    }
    .skill-items {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
    }
    .skill-pill {
      font-family: var(--mono);
      font-size: 0.75rem;
      padding: 0.45rem 1rem;
      background: var(--bg2);
      border: 1px solid var(--border);
      color: var(--text);
      cursor: default;
      transition: all 0.2s;
      position: relative;
      overflow: hidden;
    }
    .skill-pill::before {
      content: '';
      position: absolute;
      left: 0; top: 0; bottom: 0;
      width: 2px;
      background: var(--green);
      transform: scaleY(0);
      transition: transform 0.2s;
    }
    .skill-pill:hover { border-color: rgba(0,255,136,0.3); color: var(--green); background: rgba(0,255,136,0.04); }
    .skill-pill:hover::before { transform: scaleY(1); }

    /* ── EXPERIENCE ── */
    #experience { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

    .timeline { position: relative; }
    .timeline::before {
      content: '';
      position: absolute;
      left: 0; top: 0; bottom: 0;
      width: 1px;
      background: var(--border);
    }
    .timeline-item {
      padding-left: 2rem;
      padding-bottom: 3rem;
      position: relative;
    }
    .timeline-item:last-child { padding-bottom: 0; }
    .timeline-dot {
      position: absolute;
      left: -5px; top: 4px;
      width: 11px; height: 11px;
      border-radius: 50%;
      background: var(--bg2);
      border: 1px solid var(--green);
    }
    .timeline-item.current .timeline-dot {
      background: var(--green);
      box-shadow: 0 0 10px rgba(0,255,136,0.5);
    }
    .timeline-date {
      font-family: var(--mono);
      font-size: 0.7rem;
      color: var(--muted);
      letter-spacing: 0.1em;
      margin-bottom: 0.4rem;
    }
    .timeline-role {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.15rem;
    }
    .timeline-company {
      font-family: var(--mono);
      font-size: 0.8rem;
      color: var(--green);
      margin-bottom: 0.75rem;
    }
    .timeline-desc {
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.7;
    }
    .timeline-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      margin-top: 0.75rem;
    }
    .timeline-tag {
      font-family: var(--mono);
      font-size: 0.65rem;
      padding: 0.2rem 0.6rem;
      background: rgba(0,212,255,0.06);
      border: 1px solid rgba(0,212,255,0.15);
      color: var(--cyan);
    }

    /* ── PROJECTS ── */
    #projects { background: var(--bg); }

    .project-card {
      background: var(--bg2);
      border: 1px solid var(--border);
      padding: 1.75rem;
      transition: all 0.3s;
      position: relative;
      overflow: hidden;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .project-card::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(0,255,136,0.04) 0%, transparent 60%);
      opacity: 0;
      transition: opacity 0.3s;
    }
    .project-card:hover { border-color: rgba(0,255,136,0.3); transform: translateY(-4px); }
    .project-card:hover::after { opacity: 1; }

    .project-num {
      font-family: var(--mono);
      font-size: 0.65rem;
      color: var(--border);
      margin-bottom: 1rem;
    }
    .project-icon {
      font-size: 1.75rem;
      color: var(--green);
      margin-bottom: 1rem;
    }
    .project-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 0.5rem;
    }
    .project-desc {
      font-size: 0.85rem;
      color: var(--muted);
      line-height: 1.6;
      flex: 1;
    }
    .project-stack {
      display: flex;
      flex-wrap: wrap;
      gap: 0.35rem;
      margin-top: 1.25rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--border);
    }
    .project-tag {
      font-family: var(--mono);
      font-size: 0.65rem;
      color: var(--muted);
      background: var(--bg3);
      padding: 0.2rem 0.5rem;
    }
    .project-links {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
    }
    .project-link {
      font-family: var(--mono);
      font-size: 0.72rem;
      color: var(--muted);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 0.3rem;
      transition: color 0.2s;
    }
    .project-link:hover { color: var(--green); }
    .project-link i { font-size: 0.85rem; }

    /* ── CONTACT ── */
    #contact { background: var(--bg2); border-top: 1px solid var(--border); }

    .contact-form-wrap {
      background: var(--bg3);
      border: 1px solid var(--border);
      padding: 2.5rem;
    }
    .form-label-custom {
      font-family: var(--mono);
      font-size: 0.7rem;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      margin-bottom: 0.4rem;
      display: block;
    }
    .form-control-custom {
      width: 100%;
      background: var(--bg2);
      border: 1px solid var(--border);
      color: var(--text);
      font-family: var(--mono);
      font-size: 0.85rem;
      padding: 0.75rem 1rem;
      outline: none;
      transition: border-color 0.2s;
      resize: none;
    }
    .form-control-custom:focus { border-color: var(--green); }
    .form-control-custom::placeholder { color: var(--border); }

    .contact-info-item {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: 1.25rem;
      background: var(--bg3);
      border: 1px solid var(--border);
      margin-bottom: 1rem;
      text-decoration: none;
      transition: border-color 0.2s;
    }
    .contact-info-item:hover { border-color: var(--green); }
    .contact-info-icon {
      font-size: 1.25rem;
      color: var(--green);
      width: 24px;
      flex-shrink: 0;
    }
    .contact-info-label {
      font-family: var(--mono);
      font-size: 0.65rem;
      color: var(--muted);
      text-transform: uppercase;
      letter-spacing: 0.1em;
      display: block;
    }
    .contact-info-val {
      font-family: var(--mono);
      font-size: 0.85rem;
      color: var(--text);
      display: block;
    }

    /* ── FOOTER ── */
    footer {
      background: var(--bg);
      border-top: 1px solid var(--border);
      padding: 2rem 0;
      text-align: center;
      font-family: var(--mono);
      font-size: 0.72rem;
      color: var(--muted);
    }
    footer span { color: var(--green); }

    /* ── REVEAL ANIMATIONS ── */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .reveal.visible { opacity: 1; transform: none; }
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }

    /* ── MOBILE ── */
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hero-stats { gap: 1.5rem; }
      .stat-num { font-size: 1.5rem; }
      .contact-form-wrap { padding: 1.5rem; }
    }