/* ============================================================
   Fernando Guerrero B. — sistema de diseño
   Paleta: negro-grafito con verde señal (herencia de marca NandoCraft)
   Tipografía: Unbounded (display) + IBM Plex Sans (texto) + IBM Plex Mono (datos)
   ============================================================ */

:root{
  --ink:        #0a0f0b;
  --ink-2:      #10160f;
  --ink-3:      #161d14;
  --line:       #26332590;
  --line-soft:  #26332545;
  --paper:      #eef2e8;
  --text:       #e7ecdf;
  --text-dim:   #9fae97;
  --text-faint: #6b7a65;
  --signal:     #c8f31d;
  --signal-2:   #8fcb17;
  --signal-ink: #0a1206;
  --danger:     #ff6a4d;

  --font-display: 'Unbounded', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, monospace;

  --container: 1180px;
  --gap: clamp(1.25rem, 3vw, 2.5rem);
  --radius: 2px;
  --ease: cubic-bezier(.22,.9,.3,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scrollbar-color: var(--signal-2) var(--ink); }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

::selection{ background:var(--signal); color:var(--signal-ink); }

a{ color:inherit; }
img{ max-width:100%; display:block; }
h1,h2,h3,h4{ font-family:var(--font-display); font-weight:600; line-height:1.08; margin:0; letter-spacing:-0.01em; }
p{ margin:0; }
button{ font-family:inherit; }

:focus-visible{ outline:2px solid var(--signal); outline-offset:3px; }

.container{ max-width:var(--container); margin:0 auto; padding:0 clamp(1.25rem, 4vw, 3rem); }

.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--signal);
  display:flex;
  align-items:center;
  gap:.6em;
}
.eyebrow::before{
  content:"";
  width:1.6em; height:1px;
  background:var(--signal);
  display:inline-block;
}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute; left:1rem; top:-4rem;
  background:var(--signal); color:var(--signal-ink);
  padding:.6rem 1rem; z-index:1000; font-family:var(--font-mono); font-size:.85rem;
  transition:top .2s var(--ease);
}
.skip-link:focus{ top:1rem; }

/* ---------- Nav ---------- */
.site-nav{
  position:fixed; inset:0 0 auto 0; z-index:500;
  backdrop-filter: blur(10px);
  background:color-mix(in srgb, var(--ink) 82%, transparent);
  border-bottom:1px solid var(--line-soft);
}
.site-nav .container{
  display:flex; align-items:center; justify-content:space-between;
  height:64px;
}
.brand{ display:flex; align-items:center; gap:.6rem; text-decoration:none; }
.brand img{ height:30px; width:auto; }
.brand span{ font-family:var(--font-mono); font-size:.85rem; letter-spacing:.04em; color:var(--text); }

.nav-links{ display:flex; gap:1.9rem; list-style:none; margin:0; padding:0; }
.nav-links a{
  text-decoration:none; font-family:var(--font-mono); font-size:.78rem;
  letter-spacing:.06em; text-transform:uppercase; color:var(--text-dim);
  padding:.4rem 0; position:relative; transition:color .2s;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:1px;
  background:var(--signal); transition:right .25s var(--ease);
}
.nav-links a:hover, .nav-links a[aria-current="true"]{ color:var(--text); }
.nav-links a[aria-current="true"]::after, .nav-links a:hover::after{ right:0; }

.nav-right{ display:flex; align-items:center; gap:1.1rem; }
.lang-switch{ position:relative; }
.lang-switch summary{
  list-style:none; cursor:pointer; font-family:var(--font-mono); font-size:.78rem;
  color:var(--text-dim); border:1px solid var(--line-soft); padding:.35rem .7rem;
  display:flex; align-items:center; gap:.4rem;
}
.lang-switch summary::-webkit-details-marker{ display:none; }
.lang-switch[open] summary{ color:var(--signal); border-color:var(--signal-2); }
.lang-menu{
  position:absolute; right:0; top:calc(100% + .5rem);
  background:var(--ink-2); border:1px solid var(--line-soft);
  min-width:150px; padding:.35rem;
}
.lang-menu a{
  display:flex; justify-content:space-between; gap:.6rem;
  text-decoration:none; font-family:var(--font-mono); font-size:.78rem;
  color:var(--text-dim); padding:.45rem .6rem;
}
.lang-menu a:hover{ background:var(--ink-3); color:var(--signal); }
.lang-menu a[aria-current="true"]{ color:var(--signal); }

.nav-toggle{
  display:none; background:none; border:1px solid var(--line-soft); color:var(--text);
  width:38px; height:38px; cursor:pointer; align-items:center; justify-content:center;
}
.nav-toggle svg{ width:18px; height:18px; }

@media (max-width: 880px){
  .nav-links{
    position:fixed; inset:64px 0 0 0; flex-direction:column; gap:0;
    background:var(--ink); padding:1rem 1.25rem; transform:translateY(-8px);
    opacity:0; pointer-events:none; transition:opacity .2s var(--ease), transform .2s var(--ease);
  }
  .nav-links.open{ opacity:1; pointer-events:auto; transform:translateY(0); }
  .nav-links a{ display:block; padding:.9rem 0; border-bottom:1px solid var(--line-soft); font-size:.9rem; }
  .nav-toggle{ display:inline-flex; }
}

/* ---------- Sections as "pages" ---------- */
.page-section{
  position:relative;
  min-height:100vh;
  padding:calc(64px + 4.5rem) 0 5rem;
  display:flex; flex-direction:column; justify-content:center;
  border-bottom:1px solid var(--line-soft);
  scroll-margin-top:64px;
}
.page-section.compact{ min-height:auto; padding:4.5rem 0; }
.section-head{ margin-bottom:2.75rem; max-width:640px; }
.section-head h2{ font-size:clamp(1.9rem, 4vw, 2.7rem); margin-top:.6rem; }
.section-head .lead{ margin-top:1rem; color:var(--text-dim); font-size:1.02rem; max-width:56ch; }

/* ---------- Hero ---------- */
.hero{ min-height:100vh; padding-top:64px; overflow:hidden; position:relative; }
.hero-grid{
  display:grid; grid-template-columns:1.15fr .85fr; gap:clamp(2rem,5vw,4rem);
  align-items:center; position:relative; z-index:2;
}
.hero canvas.pulsegrid{
  position:absolute; inset:0; width:100%; height:100%; z-index:0; opacity:.55; pointer-events:none;
}
.hero-copy{ position:relative; z-index:2; }
.hero-copy h1{
  font-size:clamp(2.3rem, 5.4vw, 4.1rem); margin-top:1rem; color:var(--paper);
}
.hero-copy h1 em{ font-style:normal; color:var(--signal); }
.hero-copy .lead{
  margin-top:1.5rem; color:var(--text-dim); font-size:1.12rem; max-width:52ch;
}
.hero-cta{ display:flex; gap:.9rem; margin-top:2.3rem; flex-wrap:wrap; }
.hero-photo{
  position:relative; z-index:2; justify-self:center;
  border:1px solid var(--line-soft);
  padding:.6rem;
  background:var(--ink-2);
}
.hero-photo img{ width:100%; max-width:340px; height:auto; }
.hero-photo .tag{
  position:absolute; bottom:-.9rem; left:.9rem; background:var(--signal); color:var(--signal-ink);
  font-family:var(--font-mono); font-size:.68rem; letter-spacing:.06em; text-transform:uppercase;
  padding:.35rem .6rem;
}
.scroll-cue{
  position:absolute; bottom:1.6rem; left:50%; transform:translateX(-50%);
  font-family:var(--font-mono); font-size:.68rem; color:var(--text-faint);
  letter-spacing:.14em; text-transform:uppercase; display:flex; flex-direction:column;
  align-items:center; gap:.5rem; z-index:2;
}
.scroll-cue .bar{ width:1px; height:34px; background:linear-gradient(var(--signal), transparent); animation:cue 1.8s ease-in-out infinite; }
@keyframes cue{ 0%{ transform:scaleY(0); transform-origin:top;} 50%{ transform:scaleY(1); transform-origin:top;} 51%{ transform-origin:bottom;} 100%{ transform:scaleY(0); transform-origin:bottom;} }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:.55rem;
  font-family:var(--font-mono); font-size:.8rem; letter-spacing:.04em; text-transform:uppercase;
  text-decoration:none; padding:.85rem 1.4rem; border:1px solid var(--signal);
  color:var(--text); background:transparent; cursor:pointer; transition:all .2s var(--ease);
}
.btn:hover{ background:var(--signal); color:var(--signal-ink); }
.btn.primary{ background:var(--signal); color:var(--signal-ink); }
.btn.primary:hover{ background:var(--paper); border-color:var(--paper); }
.btn svg{ width:14px; height:14px; }

/* ---------- Historia / About ---------- */
.story{ display:grid; grid-template-columns:.9fr 1.1fr; gap:clamp(2rem,5vw,4rem); }
.story-copy p{ margin-bottom:1.15rem; color:var(--text-dim); font-size:1.02rem; max-width:60ch; }
.story-copy p:first-of-type{ color:var(--text); font-size:1.12rem; }
.story-figures{ display:grid; gap:1px; background:var(--line-soft); border:1px solid var(--line-soft); align-content:start; }
.story-figure{ background:var(--ink-2); padding:1.3rem 1.4rem; }
.story-figure .num{ font-family:var(--font-display); font-size:2rem; color:var(--signal); }
.story-figure .lbl{ font-family:var(--font-mono); font-size:.72rem; color:var(--text-dim); text-transform:uppercase; letter-spacing:.06em; margin-top:.3rem; }
.certs{ display:flex; flex-wrap:wrap; gap:.5rem; margin-top:1.6rem; }
.cert-chip{
  font-family:var(--font-mono); font-size:.72rem; letter-spacing:.03em; color:var(--text-dim);
  border:1px solid var(--line-soft); padding:.35rem .65rem;
}

/* ---------- Experiencia / Timeline ---------- */
.timeline{ position:relative; padding-left:clamp(1.5rem, 4vw, 3rem); }
.timeline::before{
  content:""; position:absolute; left:0; top:.4rem; bottom:.4rem; width:1px;
  background:linear-gradient(var(--signal), var(--line-soft) 85%);
}
.tl-item{ position:relative; padding-bottom:2.6rem; }
.tl-item:last-child{ padding-bottom:0; }
.tl-item::before{
  content:""; position:absolute; left:calc(-1 * clamp(1.5rem, 4vw, 3rem)); top:.35rem;
  width:9px; height:9px; background:var(--ink); border:1px solid var(--signal); border-radius:50%;
  transform:translateX(-4px);
}
.tl-item.current::before{ background:var(--signal); }
.tl-date{ font-family:var(--font-mono); font-size:.75rem; color:var(--signal); letter-spacing:.04em; }
.tl-role{ font-size:1.25rem; font-family:var(--font-display); font-weight:600; margin-top:.35rem; color:var(--paper); }
.tl-org{ color:var(--text-dim); font-size:.92rem; margin-top:.15rem; }
.tl-desc{ color:var(--text-dim); font-size:.94rem; margin-top:.6rem; max-width:64ch; line-height:1.65; }

/* ---------- OT Land / Proyectos ---------- */
.projects{ display:grid; grid-template-columns:repeat(2, 1fr); gap:1px; background:var(--line-soft); border:1px solid var(--line-soft); }
.project-card{ background:var(--ink-2); padding:2.2rem; display:flex; flex-direction:column; gap:1rem; }
.project-card .icon-mark{ width:44px; height:44px; }
.project-card h3{ font-size:1.4rem; color:var(--paper); }
.project-card p{ color:var(--text-dim); font-size:.95rem; }
.project-card .tags{ display:flex; flex-wrap:wrap; gap:.4rem; margin-top:.2rem; }
.project-card .btn{ margin-top:auto; align-self:flex-start; }
@media (max-width: 720px){ .projects{ grid-template-columns:1fr; } .story{ grid-template-columns:1fr; } .hero-grid{ grid-template-columns:1fr; } .hero-photo{ order:-1; max-width:260px; margin:0 auto;} }

/* ---------- Habilidades ---------- */
.skills-grid{ display:grid; grid-template-columns:1.3fr .9fr; gap:clamp(2rem,5vw,4rem); }
.skill-group h3{ font-family:var(--font-mono); font-size:.78rem; letter-spacing:.08em; text-transform:uppercase; color:var(--text-dim); margin-bottom:1rem; }
.skill-list{ display:flex; flex-wrap:wrap; gap:.55rem; margin-bottom:2rem; }
.skill-tag{
  font-family:var(--font-mono); font-size:.82rem; color:var(--text);
  border:1px solid var(--line-soft); padding:.5rem .85rem; position:relative;
}
.skill-tag::before{ content:"›"; color:var(--signal); margin-right:.5rem; }
.lang-bars{ display:grid; gap:1rem; }
.lang-bar-row{ display:grid; grid-template-columns:100px 1fr auto; align-items:center; gap:.8rem; }
.lang-bar-row .name{ font-family:var(--font-mono); font-size:.82rem; color:var(--text); }
.lang-bar-track{ height:4px; background:var(--line-soft); position:relative; }
.lang-bar-fill{ position:absolute; inset:0; background:var(--signal); width:0; transition:width 1s var(--ease); }
.lang-bar-row .pct{ font-family:var(--font-mono); font-size:.75rem; color:var(--text-faint); }

/* ---------- Testimonios ---------- */
.testimonials{ display:grid; grid-template-columns:repeat(2, 1fr); gap:1px; background:var(--line-soft); border:1px solid var(--line-soft); }
.testi-card{ background:var(--ink-2); padding:2.2rem; }
.testi-card .quote-mark{ font-family:var(--font-display); font-size:2.6rem; color:var(--signal); line-height:1; }
.testi-card p.quote{ color:var(--text); font-size:1rem; margin:1rem 0 1.4rem; line-height:1.7; }
.testi-who{ font-family:var(--font-mono); font-size:.78rem; color:var(--text-dim); }
.testi-who strong{ color:var(--paper); display:block; font-family:var(--font-body); font-size:.95rem; margin-bottom:.15rem; }
@media (max-width: 720px){ .testimonials{ grid-template-columns:1fr; } .skills-grid{ grid-template-columns:1fr; } }

/* ---------- Contacto / Links ---------- */
.links-grid{ display:grid; grid-template-columns:repeat(auto-fit, minmax(230px, 1fr)); gap:1px; background:var(--line-soft); border:1px solid var(--line-soft); }
.link-card{
  background:var(--ink-2); padding:1.6rem; display:flex; flex-direction:column; gap:.9rem;
  text-decoration:none; transition:background .2s;
}
.link-card:hover{ background:var(--ink-3); }
.link-card .row{ display:flex; align-items:center; justify-content:space-between; gap:1rem; }
.link-card .label{ font-family:var(--font-display); font-size:1.05rem; color:var(--paper); }
.link-card .url{ font-family:var(--font-mono); font-size:.72rem; color:var(--text-faint); word-break:break-all; }
.link-card .qr{ width:74px; height:74px; background:var(--paper); padding:6px; flex:none; }
.link-card .qr svg{ width:100%; height:100%; }
.link-card .go{ font-family:var(--font-mono); font-size:.72rem; color:var(--signal); text-transform:uppercase; letter-spacing:.05em; }

.contact-panel{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,5vw,4rem); margin-top:3rem; align-items:start; }
.lead-spaced{ margin-top:.8rem; }
.contact-direct{ display:grid; gap:1.1rem; }
.contact-row{ display:flex; align-items:center; gap:.8rem; font-family:var(--font-mono); font-size:.9rem; color:var(--text-dim); }
.contact-row a{ color:var(--text); text-decoration:none; border-bottom:1px solid var(--line-soft); }
.contact-row a:hover{ color:var(--signal); border-color:var(--signal); }
.copy-btn{
  background:none; border:1px solid var(--line-soft); color:var(--text-dim); font-family:var(--font-mono);
  font-size:.68rem; padding:.25rem .5rem; cursor:pointer; text-transform:uppercase; letter-spacing:.04em;
}
.copy-btn:hover{ border-color:var(--signal); color:var(--signal); }
.copy-btn[data-copied="true"]{ color:var(--signal); border-color:var(--signal); }

/* ---------- Footer ---------- */
.site-footer{ padding:3rem 0; }
.site-footer .container{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:1rem; }
.site-footer p{ font-family:var(--font-mono); font-size:.72rem; color:var(--text-faint); letter-spacing:.03em; }
.footer-links{ display:flex; gap:1.3rem; list-style:none; padding:0; margin:0; }
.footer-links a{ font-family:var(--font-mono); font-size:.72rem; color:var(--text-dim); text-decoration:none; }
.footer-links a:hover{ color:var(--signal); }

@media (max-width: 720px){ .contact-panel{ grid-template-columns:1fr; } }