/* ---------------------------------------------------------
   Pep Lluís Negre — personal site
   Dark engineering / blueprint theme
--------------------------------------------------------- */

:root{
  --bg: #0b1016;
  --bg-alt: #10161e;
  --panel: #121922;
  --grid-line: rgba(125, 211, 252, 0.06);
  --grid-line-strong: rgba(125, 211, 252, 0.12);
  --border: rgba(230, 237, 243, 0.09);
  --ink: #e6edf3;
  --ink-soft: #aab8c2;
  --muted: #74838f;
  --accent: #38bdf8;
  --accent-soft: #7dd3fc;
  --accent-dim: rgba(56, 189, 248, 0.14);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Consolas, monospace;
  --sans: -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --max: 1080px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background:
    linear-gradient(var(--grid-line) 1px, transparent 1px) 0 0 / 100% 42px,
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px) 0 0 / 42px 100%,
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a{ color: var(--accent-soft); }

.container{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.mono{ font-family: var(--mono); }

.eyebrow{
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.75rem;
}
.eyebrow::before{
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

/* ---------- Nav ---------- */
.nav{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 16, 22, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav .container{
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand{
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.brand .bracket{ color: var(--accent); }

.nav-links{
  display: flex;
  align-items: center;
  gap: 1.9rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a{
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-family: var(--mono);
  transition: color 0.15s ease;
}
.nav-links a:hover, .nav-links a.active{ color: var(--accent-soft); }
.nav-links a.cta{
  border: 1px solid var(--accent);
  color: var(--accent-soft);
  padding: 0.4rem 0.85rem;
  border-radius: 3px;
}
.nav-links a.cta:hover{ background: var(--accent-dim); }

.nav-toggle{
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--ink);
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

@media (max-width: 780px){
  .nav-toggle{ display: flex; }
  .nav-links{
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem 1.5rem 1.25rem;
    display: none;
  }
  .nav-links.open{ display: flex; }
  .nav-links li{ width: 100%; }
  .nav-links a{ display: block; padding: 0.7rem 0; border-bottom: 1px solid var(--border); }
  .nav-links a.cta{ margin-top: 0.75rem; display: inline-block; border-bottom: 1px solid var(--accent); }
}

/* ---------- Hero ---------- */
.hero{
  padding: 6.5rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.hero .container{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 900px){
  .hero .container{ grid-template-columns: 1fr; }
}

.hero h1{
  font-size: clamp(2.1rem, 4.2vw, 3.1rem);
  line-height: 1.15;
  margin: 0 0 0.9rem;
  letter-spacing: -0.01em;
}
.hero h1 .hl{ color: var(--accent-soft); }
.hero .role{
  font-family: var(--mono);
  color: var(--accent);
  font-size: 1.05rem;
  margin: 0 0 1.25rem;
}
.hero p.lede{
  color: var(--ink-soft);
  font-size: 1.08rem;
  max-width: 46ch;
  margin: 0 0 2rem;
}

.btn-row{ display: flex; gap: 0.9rem; flex-wrap: wrap; align-items: center; }
.btn{
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border-radius: 4px;
  font-size: 0.92rem;
  text-decoration: none;
  font-family: var(--mono);
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.btn-primary{ background: var(--accent); color: #051017; border-color: var(--accent); }
.btn-primary:hover{ background: var(--accent-soft); }
.btn-ghost{ color: var(--ink); border-color: var(--border); }
.btn-ghost:hover{ border-color: var(--accent); color: var(--accent-soft); }

.social-row{ display: flex; gap: 1rem; margin-top: 1.75rem; }
.social-row a{
  width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--ink-soft);
  text-decoration: none;
  transition: all 0.15s ease;
}
.social-row a:hover{ color: var(--accent-soft); border-color: var(--accent); }

/* Terminal card */
.term{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}
.term-bar{
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 0.85rem;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}
.term-dot{ width: 10px; height: 10px; border-radius: 50%; background: #3a4450; }
.term-dot:nth-child(1){ background: #ff5f57; }
.term-dot:nth-child(2){ background: #febc2e; }
.term-dot:nth-child(3){ background: #28c840; }
.term-title{
  margin-left: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}
.term pre{
  margin: 0;
  padding: 1.25rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--ink-soft);
  overflow-x: auto;
}
.term .tok-key{ color: var(--accent-soft); }
.term .tok-str{ color: #a5d6ff; }
.term .tok-com{ color: var(--muted); }
.term .tok-fn{ color: #f2cc60; }

/* ---------- Sections ---------- */
section{ padding: 5.5rem 0; border-top: 1px solid var(--border); }
section#home{ border-top: none; }

.section-head{ margin-bottom: 2.75rem; max-width: 60ch; }
.section-head h2{
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}
.section-head p{ color: var(--ink-soft); margin: 0; }

/* ---------- About ---------- */
.about-grid{
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
}
@media (max-width: 860px){ .about-grid{ grid-template-columns: 1fr; } }

.about-grid p{ color: var(--ink-soft); }
.about-grid strong{ color: var(--ink); }

.stat-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.stat{
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.15rem 1.1rem;
  position: relative;
}
.stat::before, .stat::after{
  content: "";
  position: absolute;
  width: 8px; height: 8px;
  border: 1px solid var(--accent);
  opacity: 0.6;
}
.stat::before{ top: -1px; left: -1px; border-right: none; border-bottom: none; }
.stat::after{ bottom: -1px; right: -1px; border-left: none; border-top: none; }
.stat .num{
  font-family: var(--mono);
  font-size: 1.7rem;
  color: var(--accent-soft);
  display: block;
}
.stat .label{ color: var(--muted); font-size: 0.85rem; }

/* ---------- Experience timeline ---------- */
.timeline{ position: relative; padding-left: 2rem; }
.timeline::before{
  content: "";
  position: absolute;
  left: 5px; top: 6px; bottom: 6px;
  width: 1px;
  background: var(--border);
}
.tl-item{ position: relative; padding-bottom: 2.25rem; }
.tl-item:last-child{ padding-bottom: 0; }
.tl-item::before{
  content: "";
  position: absolute;
  left: -2rem; top: 5px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.tl-item.current::before{ background: var(--accent); box-shadow: 0 0 0 4px var(--accent-dim); }
.tl-date{ font-family: var(--mono); color: var(--accent); font-size: 0.82rem; }
.tl-role{ font-size: 1.08rem; margin: 0.2rem 0 0.1rem; color: var(--ink); }
.tl-org{ color: var(--muted); font-size: 0.9rem; margin-bottom: 0.5rem; }
.tl-item p{ color: var(--ink-soft); margin: 0; max-width: 62ch; }

.timeline-more{
  margin-top: 1.5rem;
  padding-left: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.timeline-more a{ color: var(--accent-soft); }

/* ---------- Projects ---------- */
.card-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
@media (max-width: 900px){ .card-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px){ .card-grid{ grid-template-columns: 1fr; } }

.card{
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  background: var(--bg-alt);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 0.15s ease;
}
.card:hover{ border-color: var(--accent); }
.card .tag{
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.card h3{ margin: 0; font-size: 1.05rem; }
.card h3 a{ color: var(--ink); text-decoration: none; }
.card h3 a:hover{ color: var(--accent-soft); }
.card p{ color: var(--ink-soft); font-size: 0.92rem; margin: 0; flex-grow: 1; }
.card .links{ display: flex; gap: 0.9rem; margin-top: 0.4rem; font-size: 0.85rem; }
.card .links a{ color: var(--muted); text-decoration: none; }
.card .links a:hover{ color: var(--accent-soft); }

.patents-block{ margin-top: 3rem; }
.patents-block h3{ font-size: 1.05rem; margin: 0 0 1rem; color: var(--ink); }
.patents-list{ list-style: none; margin: 0; padding: 0; }
.patents-list li{
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.patents-list li:last-child{ border-bottom: none; }
.patents-list .p-year{ font-family: var(--mono); color: var(--muted); }
.patents-list .p-title{ color: var(--ink-soft); }
.patents-list .p-title strong{ color: var(--ink); font-weight: 500; }
.patents-list .p-link{ color: var(--accent-soft); text-decoration: none; font-family: var(--mono); font-size: 0.82rem; white-space: nowrap; }
@media (max-width: 620px){
  .patents-list li{ grid-template-columns: 1fr; gap: 0.25rem; }
}

/* ---------- Skills ---------- */
.skills-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}
@media (max-width: 900px){ .skills-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .skills-grid{ grid-template-columns: 1fr; } }

.skill-col h4{
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.9rem;
}
.pill-list{ display: flex; flex-wrap: wrap; gap: 0.5rem; }
.pill{
  border: 1px solid var(--border);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.8rem;
  padding: 0.35rem 0.65rem;
  border-radius: 3px;
}

/* ---------- Contact ---------- */
.contact-panel{
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3rem;
  background: var(--bg-alt);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (max-width: 780px){ .contact-panel{ grid-template-columns: 1fr; padding: 2rem; } }

.contact-panel h2{ margin: 0 0 0.75rem; font-size: 1.6rem; }
.contact-panel p{ color: var(--ink-soft); margin: 0; max-width: 44ch; }

.contact-list{ list-style: none; margin: 0; padding: 0; }
.contact-list li{ padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.contact-list li:last-child{ border-bottom: none; }
.contact-list a{ color: var(--ink); text-decoration: none; font-family: var(--mono); font-size: 0.92rem; }
.contact-list a:hover{ color: var(--accent-soft); }
.contact-list .fa{ width: 1.4em; color: var(--accent); }

/* ---------- Footer ---------- */
footer{
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}
footer .container{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}
footer a{ color: var(--muted); text-decoration: none; font-family: var(--mono); }
footer a:hover{ color: var(--accent-soft); }

/* ---------- Reveal-on-scroll ---------- */
.reveal{ opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in{ opacity: 1; transform: none; }

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