/* ============================================================
   David Vendrell — Interactive CV
   Dark editorial · Fraunces display · controlled motion
   ============================================================ */

:root{
  --bg:        #0c0c0e;
  --bg-2:      #121215;
  --ink:       #f4f1ea;
  --ink-soft:  #b8b3a8;
  --ink-faint: #6f6a5f;
  --line:      #26262b;
  --accent:    #d4ff3f;   /* electric lime — sharp, used sparingly */
  --accent-2:  #e8623d;   /* warm ember for secondary accent */
  --max:       1180px;
  --pad:       clamp(1.4rem, 5vw, 6rem);
  --serif:     "Fraunces", Georgia, serif;
  --read:      "Newsreader", Georgia, serif;
  --mono:      "JetBrains Mono", ui-monospace, monospace;
}

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

html{ scroll-behavior:smooth; }

body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--read);
  font-size:18px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  cursor:default;
}

::selection{ background:var(--accent); color:#0c0c0e; }

/* ---- Grain overlay ---- */
.grain{
  position:fixed; inset:0; z-index:200; pointer-events:none;
  opacity:.04; mix-blend-mode:overlay;
  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='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Progress rail ---- */
.rail{
  position:fixed; right:max(1.2rem,2vw); top:50%; transform:translateY(-50%);
  z-index:100; display:flex; flex-direction:column; gap:.95rem;
}
.rail__dot{
  width:9px; height:9px; border-radius:50%;
  border:1px solid var(--ink-faint); background:transparent;
  position:relative; transition:all .35s cubic-bezier(.22,1,.36,1);
}
.rail__dot:hover{ border-color:var(--accent); transform:scale(1.3); }
.rail__dot.is-active{ background:var(--accent); border-color:var(--accent); transform:scale(1.25); }
.rail__dot::after{
  content:attr(data-label);
  position:absolute; right:20px; top:50%; transform:translateY(-50%) translateX(6px);
  font-family:var(--mono); font-size:.62rem; letter-spacing:.04em;
  color:var(--ink-soft); white-space:nowrap;
  opacity:0; pointer-events:none; transition:all .3s ease;
  text-transform:uppercase;
}
.rail__dot:hover::after{ opacity:1; transform:translateY(-50%) translateX(0); }

/* ---- Top bar ---- */
.topbar{
  position:fixed; top:0; left:0; right:0; z-index:90;
  display:flex; justify-content:space-between; align-items:center;
  padding:1.3rem var(--pad);
  font-family:var(--mono); font-size:.72rem; letter-spacing:.05em;
  color:var(--ink-soft);
  mix-blend-mode:difference;
}
.topbar__mark{ font-weight:500; color:var(--ink); font-size:.95rem; letter-spacing:.08em; }
.topbar__mark .dot{ color:var(--accent); }
.topbar__meta{ text-transform:uppercase; }

/* ---- Chapter shell ---- */
.chapter{
  min-height:100vh;
  display:flex; align-items:center;
  padding:7rem var(--pad) 5rem;
  position:relative;
  border-bottom:1px solid var(--line);
}
.wrap{ width:100%; max-width:var(--max); margin:0 auto; }

.section-no{
  display:block; font-family:var(--mono); font-size:.7rem; letter-spacing:.18em;
  text-transform:uppercase; color:var(--accent); margin-bottom:2.2rem;
}

/* ---- Reveal animation ---- */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .9s cubic-bezier(.22,1,.36,1), transform .9s cubic-bezier(.22,1,.36,1); }
.reveal.in{ opacity:1; transform:none; }
.reveal[data-d="1"]{ transition-delay:.09s;} .reveal[data-d="2"]{ transition-delay:.18s;}
.reveal[data-d="3"]{ transition-delay:.27s;} .reveal[data-d="4"]{ transition-delay:.36s;}
.reveal[data-d="5"]{ transition-delay:.45s;}

/* ============================================================
   01 INTRO
   ============================================================ */
.chapter--intro{ background:radial-gradient(ellipse 80% 60% at 30% 20%, #16161b 0%, var(--bg) 60%); }
.intro__inner{ max-width:var(--max); margin:0 auto; width:100%; }
.kicker{
  font-family:var(--mono); font-size:.78rem; letter-spacing:.2em; text-transform:uppercase;
  color:var(--ink-soft); margin-bottom:1.6rem;
}
.display{
  font-family:var(--serif); font-weight:300;
  font-size:clamp(3.6rem, 13vw, 11rem); line-height:.92;
  letter-spacing:-.03em; color:var(--ink);
}
.display__accent{ color:var(--accent); }
.lede{
  font-family:var(--read); font-size:clamp(1.3rem,3vw,2rem); line-height:1.4;
  max-width:33ch; margin-top:2.4rem; color:var(--ink-soft); font-weight:400;
}
.lede em{ color:var(--ink); font-style:italic; }
.intro__scroll{
  margin-top:3.5rem; display:flex; align-items:center; gap:.9rem;
  font-family:var(--mono); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-faint);
}
.intro__arrow{ animation:bob 1.8s ease-in-out infinite; font-size:1rem; color:var(--accent); }
@keyframes bob{ 0%,100%{transform:translateY(0)} 50%{transform:translateY(6px)} }
.intro__counter{
  position:absolute; bottom:5rem; right:var(--pad);
  text-align:right; display:flex; flex-direction:column;
}
.intro__counter .num{
  font-family:var(--serif); font-size:clamp(3rem,7vw,5.5rem); line-height:1;
  font-weight:400; color:var(--accent);
}
.num-label{ font-family:var(--mono); font-size:.68rem; letter-spacing:.1em; text-transform:uppercase; color:var(--ink-faint); margin-top:.4rem; }

/* ============================================================
   02 HOOK
   ============================================================ */
.chapter--hook{ background:var(--bg-2); }
.lead-statement{
  font-family:var(--serif); font-weight:300;
  font-size:clamp(1.9rem,5.5vw,4.4rem); line-height:1.08; letter-spacing:-.02em;
  margin-bottom:3.5rem;
}
.lead-statement span{ display:block; }
.accent-line{ color:var(--accent); font-style:italic; font-weight:400; }
.hook-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.4rem; }
.hook-card{
  border:1px solid var(--line); border-radius:3px; padding:2rem 1.6rem;
  background:linear-gradient(180deg, rgba(255,255,255,.015), transparent);
  transition:border-color .4s ease, transform .4s ease;
}
.hook-card:hover{ border-color:var(--accent); transform:translateY(-4px); }
.hook-card__big{
  display:block; font-family:var(--serif); font-size:clamp(1.6rem,3vw,2.8rem);
  font-weight:400; color:var(--ink); line-height:1; margin-bottom:1.1rem;
}
.hook-card__cap{ font-size:.98rem; line-height:1.5; color:var(--ink-soft); }

/* ============================================================
   03 NOW
   ============================================================ */
.now-head{ display:flex; justify-content:space-between; align-items:baseline; flex-wrap:wrap; gap:1rem; margin-bottom:1.8rem; border-bottom:1px solid var(--line); padding-bottom:1.4rem; }
.now-title{ font-family:var(--serif); font-weight:400; font-size:clamp(2rem,5vw,3.4rem); letter-spacing:-.02em; line-height:1.05; }
.now-title .accent{ color:var(--accent); }
.now-period{ font-family:var(--mono); font-size:.8rem; letter-spacing:.08em; color:var(--ink-faint); text-transform:uppercase; }
.now-context{ font-size:1.18rem; line-height:1.6; max-width:60ch; color:var(--ink-soft); margin-bottom:3rem; }
.now-context strong{ color:var(--ink); font-weight:500; }
.now-rows{ display:flex; flex-direction:column; }
.now-row{ display:grid; grid-template-columns:140px 1fr; gap:2rem; padding:1.5rem 0; border-top:1px solid var(--line); align-items:start; }
.now-row:last-child{ border-bottom:1px solid var(--line); }
.now-row__tag{ font-family:var(--mono); font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--accent); padding-top:.25rem; }
.now-row p{ font-size:1.08rem; line-height:1.55; color:var(--ink); letter-spacing:0.01em; }
.now-row b{ font-weight:500; color:var(--ink); }

/* ============================================================
   04 IMPACT
   ============================================================ */
.chapter--impact{ background:var(--bg-2); }
.impact-intro{ font-family:var(--serif); font-weight:300; font-size:clamp(1.6rem,4vw,3rem); line-height:1.15; letter-spacing:-.02em; max-width:24ch; margin-bottom:3.5rem; }
.impact-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.stat{ background:var(--bg); padding:2.8rem 2rem; }
.stat__num{ font-family:var(--serif); font-weight:400; font-size:clamp(2.4rem,5.5vw,4rem); line-height:1; color:var(--accent); display:block; margin-bottom:1rem; letter-spacing:-.02em; }
.stat__num .arrow{ color:var(--ink-faint); margin:0 .2em; }
.stat figcaption{ font-size:.98rem; line-height:1.5; color:var(--ink-soft); }
.impact-note{ margin-top:1.6rem; font-family:var(--mono); font-size:.7rem; letter-spacing:.04em; color:var(--ink-faint); }

/* ============================================================
   05 STACK
   ============================================================ */
.stack-title{ font-family:var(--serif); font-weight:300; font-size:clamp(2.4rem,6vw,4.5rem); letter-spacing:-.02em; margin-bottom:3rem; }
.stack-cols{ display:grid; grid-template-columns:repeat(4,1fr); gap:2.5rem; }
.stack-col h3{ font-family:var(--mono); font-size:.74rem; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:1.3rem; padding-bottom:.7rem; border-bottom:1px solid var(--line); }
.stack-col ul{ list-style:none; }
.stack-col li{ display:flex; align-items:center; gap:.7rem; padding:.55rem 0; font-size:1.02rem; color:var(--ink); }
.lvl{ width:7px; height:7px; border-radius:50%; flex:0 0 auto; }
.lvl--core{ background:var(--accent); }
.lvl--mid{ background:transparent; border:1px solid var(--ink-faint); }
.stack-legend{ display:flex; gap:2rem; margin-top:2.5rem; font-family:var(--mono); font-size:.7rem; letter-spacing:.05em; text-transform:uppercase; color:var(--ink-faint); }
.stack-legend span{ display:flex; align-items:center; gap:.5rem; }

/* ============================================================
   06 JOURNEY
   ============================================================ */
.chapter--arc{ background:var(--bg-2); }
.arc-title{ font-family:var(--serif); font-weight:300; font-size:clamp(2.2rem,5.5vw,4.2rem); letter-spacing:-.02em; line-height:1.05; }
.arc-sub{ font-size:1.12rem; line-height:1.6; max-width:58ch; color:var(--ink-soft); margin:1.5rem 0 3.5rem; }
.timeline{ list-style:none; border-left:1px solid var(--line); }
.tl{ position:relative; padding:0 0 2.8rem 2.4rem; }
.tl::before{ content:""; position:absolute; left:-5px; top:.5rem; width:9px; height:9px; border-radius:50%; background:var(--bg-2); border:1px solid var(--ink-faint); transition:all .4s ease; }
.tl:first-child::before{ background:var(--accent); border-color:var(--accent); box-shadow:0 0 0 4px rgba(212,255,63,.12); }
.tl:hover::before{ border-color:var(--accent); }
.tl__date{ font-family:var(--mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--accent); }
.tl h3{ font-family:var(--serif); font-weight:500; font-size:1.45rem; margin:.4rem 0 .2rem; letter-spacing:-.01em; }
.tl__org{ font-family:var(--mono); font-size:.8rem; color:var(--ink-faint); display:block; margin-bottom:.6rem; }
.tl p{ font-size:1rem; line-height:1.55; color:var(--ink-soft); max-width:62ch; }

/* ============================================================
   07 PATENTS
   ============================================================ */
.pat-title{ font-family:var(--serif); font-weight:300; font-size:clamp(2.2rem,6vw,4.8rem); line-height:1.02; letter-spacing:-.03em; }
.pat-title .accent{ color:var(--accent); }
.pat-sub{ font-size:1.12rem; line-height:1.6; max-width:56ch; color:var(--ink-soft); margin:1.5rem 0 3rem; }
.pat-list{ display:flex; flex-direction:column; }
.pat{ display:grid; grid-template-columns:180px 1fr 30px; gap:1.5rem; align-items:center; padding:1.6rem 0; border-top:1px solid var(--line); text-decoration:none; color:var(--ink); transition:padding-left .4s cubic-bezier(.22,1,.36,1), background .4s ease; }
.pat:last-child{ border-bottom:1px solid var(--line); }
.pat:hover{ padding-left:1.2rem; background:linear-gradient(90deg, rgba(212,255,63,.04), transparent); }
.pat__id{ font-family:var(--mono); font-size:.82rem; letter-spacing:.04em; color:var(--accent); }
.pat__name{ font-family:var(--read); font-size:1.15rem; color:var(--ink); }
.pat__arr{ font-size:1.1rem; color:var(--ink-faint); transition:transform .35s ease, color .35s ease; }
.pat:hover .pat__arr{ transform:translate(4px,-4px); color:var(--accent); }

/* ============================================================
   08 CONTACT
   ============================================================ */
.chapter--contact{ flex-direction:column; justify-content:center; background:radial-gradient(ellipse 70% 60% at 70% 80%, #16161b 0%, var(--bg) 65%); }
.contact__wrap{ flex:1; display:flex; flex-direction:column; justify-content:center; }
.contact-title{ font-family:var(--serif); font-weight:300; font-size:clamp(2.6rem,8vw,6.5rem); line-height:1; letter-spacing:-.03em; margin-bottom:1.8rem; }
.contact-title em{ color:var(--accent); font-style:italic; }
.contact-lede{ font-size:1.2rem; line-height:1.55; max-width:50ch; color:var(--ink-soft); margin-bottom:3rem; }
.contact-links{ display:flex; flex-wrap:wrap; gap:1px; background:var(--line); border:1px solid var(--line); max-width:1020px; }
.clink{ background:var(--bg); padding:1.6rem 2rem; flex:1 1 200px; text-decoration:none; transition:background .35s ease; }
.clink:hover{ background:var(--bg-2); }
.clink__label{ display:block; font-family:var(--mono); font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--ink-faint); margin-bottom:.5rem; }
.clink__val{ font-family:var(--read); font-size:1.1rem; color:var(--ink); }
.clink:hover .clink__val{ color:var(--accent); }
.cv-btn{
  margin-top:2.5rem; align-self:flex-start;
  font-family:var(--mono); font-size:.78rem; letter-spacing:.08em; text-transform:uppercase;
  background:transparent; color:var(--ink); border:1px solid var(--ink-faint);
  padding:1rem 1.8rem; border-radius:3px; cursor:pointer;
  transition:all .35s ease;
}
.cv-btn:hover{ background:var(--accent); color:#0c0c0e; border-color:var(--accent); }

.footer{
  width:100%; max-width:var(--max); margin:4rem auto 0;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:.6rem;
  padding-top:1.6rem; border-top:1px solid var(--line);
  font-family:var(--mono); font-size:.68rem; letter-spacing:.05em; color:var(--ink-faint);
  text-transform:uppercase;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:880px){
  .chapter--intro{ flex-direction:column; align-items:flex-start; justify-content:center; }
  .intro__inner{ flex:0 0 auto; }
  .hook-grid{ grid-template-columns:1fr; }
  .stack-cols{ grid-template-columns:repeat(2,1fr); gap:2rem; }
  .impact-grid{ grid-template-columns:1fr; }
  .intro__counter{ position:static; inset:auto; text-align:left; margin-top:3rem; flex-direction:row; align-items:baseline; gap:1rem; }
  .intro__counter .num-label{ margin-top:0; max-width:14ch; }
  .intro__scroll{ margin-top:2.5rem; }
  .rail{ display:none; }
}
@media (max-width:560px){
  body{ font-size:16px; }
  .now-row{ grid-template-columns:1fr; gap:.6rem; }
  .stack-cols{ grid-template-columns:1fr; }
  .pat{ grid-template-columns:1fr 24px; gap:.4rem .8rem; }
  .pat__id{ grid-column:1; }
  .pat__name{ grid-column:1; }
  .pat__arr{ grid-row:1; grid-column:2; }
  .chapter{ padding:4.5rem 1.4rem 3rem; }
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  .intro__arrow{ animation:none; }
  html{ scroll-behavior:auto; }
}

/* ---- Print ---- */
@media print{
  .rail,.topbar,.intro__scroll,.cv-btn,.grain{ display:none; }
  body{ background:#fff; color:#000; font-size:11pt; }
  .chapter{ min-height:auto; page-break-inside:avoid; border-bottom:1px solid #ccc; padding:1.5rem 0; }
  .reveal{ opacity:1; transform:none; }
  .display,.accent,.accent-line,.stat__num,.pat__id,.contact-title em,.display__accent,.tl__date,.section-no{ color:#000 !important; }
  a{ color:#000; }
}