/* ============================================================
   Laboratorio de Neurociencias — Rojas Lab
   Design system: lab-notebook precision + electrophysiological
   trace motifs. Ink navy + phosphor teal, set in Spectral /
   IBM Plex.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --ink: #12181c;
  --ink-2: #1b242a;
  --ink-3: #253038;
  --paper: #f6f3ec;
  --paper-2: #eee9db;
  --line: #d8d2c2;
  --line-dark: #33414a;
  --trace: #2fa88a;
  --trace-bright: #4fd6b3;
  --trace-dim: #1f7a63;
  --ember: #b6592a;
  --ink-text: #20262b;
  --ink-text-soft: #4c565d;
  --paper-text: #f1eee4;
  --paper-text-soft: #aeb8bd;

  --font-display: 'Spectral', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --max: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: inherit;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 500; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.1rem); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 1.1em; }

a { color: var(--trace-dim); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; display: block; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--trace-dim);
  display: inline-block;
  margin-bottom: 0.9em;
}
.eyebrow::before { content: "// "; color: var(--line); }
.on-ink .eyebrow { color: var(--trace-bright); }
.on-ink .eyebrow::before { color: var(--line-dark); }

/* ---------------- Focus & motion ---------------- */
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--trace);
  outline-offset: 3px;
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* ---------------- Nav ---------------- */
.site-header {
  background: var(--ink);
  border-bottom: 1px solid var(--line-dark);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--paper-text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.brand strong { color: #fff; font-weight: 500; }
.brand .mark { width: 26px; height: 16px; flex-shrink: 0; }
.brand .mark path {
  fill: none;
  stroke: var(--trace-bright);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: 4px;
  color: var(--paper-text);
  width: 38px;
  height: 34px;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after { display: none; }
.nav-toggle svg { width: 18px; height: 18px; }

.nav-links {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
  font-size: 0.88rem;
}
.nav-links a {
  color: var(--paper-text-soft);
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--trace-bright);
  text-decoration: none;
  border-bottom-color: var(--trace-bright);
}
.lang-switch {
  font-family: var(--font-mono) !important;
  font-size: 0.78rem !important;
  border: 1px solid var(--line-dark);
  border-radius: 20px;
  padding: 4px 12px !important;
  margin-left: 4px;
}
.lang-switch:hover {
  border-color: var(--trace-bright);
  border-bottom-color: var(--trace-bright) !important;
}
@media (max-width: 760px) {
  .lang-switch { display: inline-block; margin: 10px 0 0; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--line-dark);
    flex-direction: column;
    gap: 0;
    padding: 4px 28px 18px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 0; border-bottom: 1px solid var(--line-dark); width: 100%; }
}

/* ---------------- Hero (ink) ---------------- */
.hero {
  background: var(--ink);
  color: var(--paper-text);
  padding: 76px 0 64px;
  position: relative;
  overflow: hidden;
}
.hero .wrap { position: relative; z-index: 2; }
.hero h1 { color: #fff; max-width: 16ch; }
.hero .lede {
  font-size: 1.15rem;
  color: var(--paper-text-soft);
  max-width: 62ch;
  margin-top: 18px;
}
.hero-trace {
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  width: 100%;
  height: auto;
  opacity: 0.9;
}
.hero-trace path {
  fill: none;
  stroke: var(--trace);
  stroke-width: 1.4;
  opacity: 0.55;
}
.hero-trace path.bright { stroke: var(--trace-bright); opacity: 0.85; stroke-width: 1.7; }

.page-hero {
  background: var(--ink);
  color: var(--paper-text);
  padding: 56px 0 42px;
}
.page-hero h1 { color: #fff; }
.page-hero .lede { color: var(--paper-text-soft); max-width: 66ch; font-size: 1.05rem; }

/* ---------------- Section divider trace ---------------- */
.divider {
  width: 100%;
  height: 34px;
  margin: 0;
}
.divider path { fill: none; stroke: var(--line); stroke-width: 1.3; }
.divider.on-ink path { stroke: var(--line-dark); }

/* ---------------- Sections ---------------- */
section { padding: 64px 0; }
.section-alt { background: var(--paper-2); }
section + section { border-top: 1px solid var(--line); }

.section-head { max-width: 68ch; margin-bottom: 40px; }
.section-head p { color: var(--ink-text-soft); font-size: 1.05rem; }

/* ---------------- Cards / grid ---------------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 28px 26px;
  position: relative;
}
.section-alt .card { background: #fff; }
.card .card-trace { height: 22px; margin-bottom: 16px; }
.card .card-trace path { stroke: var(--trace); fill: none; stroke-width: 1.5; }
.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--ink-text-soft); font-size: 0.97rem; margin-bottom: 12px; }
.card .read-more {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--trace-dim);
  letter-spacing: 0.02em;
}
.card .read-more::after { content: " →"; }

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  padding: 12px 22px;
  border-radius: 3px;
  border: 1px solid var(--trace-bright);
  color: var(--trace-bright);
  background: transparent;
}
.btn:hover { background: rgba(79, 214, 179, 0.1); text-decoration: none; }
.btn-solid {
  background: var(--trace);
  border-color: var(--trace);
  color: #08130f;
}
.btn-solid:hover { background: var(--trace-bright); border-color: var(--trace-bright); }
.on-paper .btn { border-color: var(--trace-dim); color: var(--trace-dim); }
.on-paper .btn:hover { background: rgba(31, 122, 99, 0.08); }

/* ---------------- Approach list ---------------- */
.approach-list { list-style: none; margin: 0; padding: 0; }
.approach-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
  align-items: start;
}
.approach-list li:last-child { border-bottom: 1px solid var(--line); }
.approach-list .num {
  font-family: var(--font-mono);
  color: var(--trace-dim);
  font-size: 0.85rem;
  padding-top: 2px;
}

/* ---------------- Publications ---------------- */
.pub-year {
  font-family: var(--font-mono);
  color: var(--trace-dim);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  margin: 36px 0 14px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.pub-year:first-of-type { border-top: none; margin-top: 0; }
.pub-list { list-style: none; margin: 0 0 8px; padding: 0; }
.pub-list li {
  padding: 10px 0;
  border-bottom: 1px dotted var(--line);
  font-size: 0.96rem;
  color: var(--ink-text-soft);
}
.pub-list li:last-child { border-bottom: none; }
.pub-list em { color: var(--ink-text); font-style: italic; }
.pub-list .venue { font-family: var(--font-mono); font-size: 0.82rem; color: var(--trace-dim); }

.pub-note {
  font-size: 0.9rem;
  color: var(--ink-text-soft);
  border-left: 2px solid var(--trace);
  padding-left: 14px;
  margin: 30px 0;
}

/* ---------------- Team ---------------- */
.person {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}
.person:last-child { border-bottom: 1px solid var(--line); }
.person .name { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.person .name a.person-link {
  color: var(--ink-text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.15s, color 0.15s;
}
.person .name a.person-link:hover {
  color: var(--trace-dim);
  border-bottom-color: var(--trace-dim);
}
.person .role { font-family: var(--font-mono); font-size: 0.78rem; color: var(--trace-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.person .focus { color: var(--ink-text-soft); font-size: 0.95rem; margin-top: 4px; }

.alumni-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 32px;
}
.alumni-grid div {
  padding: 10px 0;
  border-bottom: 1px dotted var(--line);
  font-size: 0.95rem;
}
.alumni-grid span { color: var(--ink-text-soft); font-family: var(--font-mono); font-size: 0.82rem; display: block; }
@media (max-width: 640px) { .alumni-grid { grid-template-columns: 1fr; } }

/* ---------------- Contact ---------------- */
.contact-block dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--trace-dim);
  margin-top: 20px;
}
.contact-block dd { margin: 4px 0 0; font-size: 1.02rem; }

.join-item {
  border-top: 1px solid var(--line);
  padding: 22px 0;
}
.join-item:last-child { border-bottom: 1px solid var(--line); }
.join-item h3 { margin-bottom: 6px; }
.join-item p { color: var(--ink-text-soft); margin-bottom: 0; }

/* ---------------- Footer ---------------- */
.site-footer {
  background: var(--ink);
  color: var(--paper-text-soft);
  padding: 38px 0;
  font-size: 0.88rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.site-footer a { color: var(--paper-text-soft); }
.site-footer a:hover { color: var(--trace-bright); }
.footer-mono { font-family: var(--font-mono); font-size: 0.8rem; }

/* ---------------- Misc utility ---------------- */
.tag-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border: 1px solid var(--line-dark);
  color: var(--paper-text-soft);
  padding: 5px 11px;
  border-radius: 20px;
}
.on-paper .tag { border-color: var(--line); color: var(--ink-text-soft); }

.two-col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } }