/* ═══════════════════════════════════════════════════════════════════
   BioSeryl · styles.css — Diseño premium oscuro con acentos verdes
   Paleta:
     --g400 : #00bf63   verde principal
     --g500 : #009950   verde oscuro hover
     --g100 : rgba(0,191,99,.12) verde suave
     --dark : #0a0f14   fondo muy oscuro
     --mid  : #111820   secciones oscuras
     --card : #161e28   fondo tarjeta
     --bdr  : #1e2d3d   borde sutil
     --txt  : #c8d6e5   texto secundario
     --wh   : #ffffff
═══════════════════════════════════════════════════════════════════ */

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

:root {
  --g400: #00bf63;
  --g500: #009950;
  --g100: rgba(0,191,99,.1);
  --g200: rgba(0,191,99,.18);
  --dark: #0a0f14;
  --mid:  #111820;
  --card: #161e28;
  --bdr:  #1e2d3d;
  --txt:  #9cb4cc;
  --wh:   #ffffff;
  --white: var(--wh);
  --light-bg: #f0f4f8;
  --light-txt: #1a2535;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 100px;
  --shadow-sm: 0 2px 12px rgba(0,0,0,.25);
  --shadow-md: 0 8px 32px rgba(0,0,0,.35);
  --shadow-lg: 0 20px 60px rgba(0,0,0,.45);
  --trans: .22s cubic-bezier(.2,.8,.2,1);
  --max: 1200px;
  --hh: 68px;
}

html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Inter', 'Segoe UI', Roboto, -apple-system, sans-serif;
  background: var(--dark);
  color: var(--wh);
  line-height: 1.65;
  overflow-x: hidden;
}

a   { color: inherit; text-decoration: none; transition: color var(--trans); }
ul  { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button, select { cursor: pointer; font: inherit; border: none; background: none; color: inherit; }
textarea { resize: vertical; }

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(0,191,99,.22);
  border-radius: var(--radius-sm);
}

.auth-form input,
.auth-form select,
.auth-form textarea {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255,255,255,.05);
  border: 1.5px solid var(--bdr);
  border-radius: var(--radius-sm);
  color: var(--wh);
  font: inherit;
  font-size: .92rem;
  transition: border-color var(--trans), box-shadow var(--trans), background var(--trans);
}
.auth-form input::placeholder,
.auth-form textarea::placeholder { color: rgba(255,255,255,.3); }
.auth-form input:focus,
.auth-form select:focus,
.auth-form textarea:focus {
  outline: none;
  border-color: var(--g400);
  background: rgba(0,191,99,.05);
  box-shadow: 0 0 0 3px rgba(0,191,99,.15);
}
.auth-form input.invalid,
.auth-form textarea.invalid { border-color: #f87171; box-shadow: 0 0 0 3px rgba(248,113,113,.12); }
.auth-form select option { background: var(--mid); }

/* ── Layout helpers ────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
}

.section       { padding: 96px 0; }
.section--dark  { background: var(--dark); }
.section--mid   { background: var(--mid); }
.section--light { background: var(--light-bg); }
.section--contact { background: var(--mid); }

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-size: .925rem;
  font-weight: 600;
  letter-spacing: .02em;
  transition: background var(--trans), color var(--trans),
              border-color var(--trans), transform var(--trans),
              box-shadow var(--trans);
  white-space: nowrap;
  line-height: 1;
}
.btn:hover  { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--green {
  background: var(--g400);
  color: var(--wh);
}
.btn--green:hover { background: var(--g500); box-shadow: 0 4px 20px rgba(0,191,99,.35); }

.btn--ghost {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.25);
  color: var(--wh);
}
.btn--ghost:hover { border-color: var(--g400); color: var(--g400); }

.btn--outline {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,.25);
  color: var(--wh);
}
.btn--outline:hover { border-color: var(--wh); background: rgba(255,255,255,.06); }

.btn--outline-green {
  background: transparent;
  border: 1.5px solid var(--g400);
  color: var(--g400);
}
.btn--outline-green:hover { background: var(--g400); color: var(--wh); }

.btn--cta {
  background: var(--g400);
  color: var(--wh);
  padding: 10px 22px;
  font-size: .85rem;
}
.btn--cta:hover { background: var(--g500); }

.btn--lg  { padding: 16px 36px; font-size: 1rem; }
.btn--sm  { padding: 9px 18px; font-size: .82rem; }
.btn--full { width: 100%; justify-content: center; }

.btn--whatsapp { border-radius: var(--radius-md); }


/* ═══════════════════════════════════════════════════════════════
   HEADER
═══════════════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--hh);
  z-index: 1000;
  transition: background var(--trans), backdrop-filter var(--trans), border-color var(--trans);
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(10,15,20,.92);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--bdr);
}

.header-inner {
  height: var(--hh);
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo-link { flex-shrink: 0; display: flex; align-items: center; }
.logo-img  { height: 38px; width: auto; object-fit: contain; }

.main-nav  { margin-left: auto; }
.nav-list  { display: flex; align-items: center; gap: 2px; }
.nav-link  {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: .84rem;
  font-weight: 500;
  color: rgba(255,255,255,.65);
  white-space: nowrap;
  transition: color var(--trans), background var(--trans), box-shadow var(--trans);
  position: relative;
}
.nav-link:hover       { color: var(--wh); background: rgba(255,255,255,.08); }
.nav-link.active      { color: var(--g400); background: var(--g100); box-shadow: 0 0 12px rgba(0,191,99,.15); }
/* Nota: antes se resaltaba Bioinformática fijo; ahora el verde marca la sección activa */
.nav-link--highlight  { color: rgba(255,255,255,.65); }
.nav-link--highlight:hover { background: rgba(255,255,255,.08); }

/* ── Department Dropdown ──────────────────────────────────────── */
.nav-dropdown { position: relative; }

.nav-link--dropdown {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: .84rem;
  font-weight: 500;
  color: rgba(255,255,255,.65);
  cursor: pointer;
  transition: color var(--trans), background var(--trans);
}
.nav-link--dropdown:hover { color: var(--wh); background: rgba(255,255,255,.08); }
.nav-link--dropdown[aria-expanded="true"] { color: var(--g400); background: var(--g100); }

.nav-chevron {
  transition: transform var(--trans);
  flex-shrink: 0;
}
.nav-link--dropdown[aria-expanded="true"] .nav-chevron { transform: rotate(180deg); }

.nav-dropdown__menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 280px;
  background: rgba(22,30,40,.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 48px rgba(0,0,0,.5);
  padding: 6px;
  z-index: 1010;
}
.nav-dropdown__menu.open { display: block; }

.nav-dropdown__item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  transition: background var(--trans);
  text-decoration: none;
}
.nav-dropdown__item:hover { background: rgba(255,255,255,.06); }

.nav-dropdown__icon {
  width: 40px;
  height: 40px;
  background: var(--g100);
  border: 1px solid rgba(0,191,99,.2);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--g400);
  transition: background var(--trans), border-color var(--trans);
}
.nav-dropdown__item:hover .nav-dropdown__icon {
  background: var(--g200);
  border-color: rgba(0,191,99,.4);
}
.nav-dropdown__icon svg { width: 20px; height: 20px; }

.nav-dropdown__item strong {
  display: block;
  font-size: .88rem;
  font-weight: 600;
  color: var(--wh);
  margin-bottom: 2px;
}
.nav-dropdown__item small {
  font-size: .75rem;
  color: var(--txt);
  font-weight: 400;
}

@media (max-width: 820px) {
  .nav-dropdown__menu {
    position: static;
    transform: none;
    min-width: 100%;
    background: rgba(255,255,255,.03);
    border: none;
    border-radius: 0;
    box-shadow: none;
    padding: 0 0 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height .3s ease, padding .3s ease;
  }
  .nav-dropdown__menu.open {
    max-height: 300px;
    padding: 8px 0 8px 16px;
  }
  .nav-dropdown__item { padding: 12px 8px; }
}

.header-cta { display: none !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger__line {
  display: block;
  width: 22px; height: 2px;
  background: var(--wh);
  border-radius: 2px;
  transition: transform var(--trans), opacity var(--trans);
}
.hamburger.open .hamburger__line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger.open .hamburger__line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════════════════════════
   LANGUAGE SWITCHER
═══════════════════════════════════════════════════════════════ */
#lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
  flex-shrink: 0;
}

.lang-country {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.10);
  color: rgba(255,255,255,.50);
  font-size: .73rem;
  font-weight: 500;
  white-space: nowrap;
  max-width: 170px;
  overflow: hidden;
}
.lang-flag {
  flex-shrink: 0;
  font-size: 1rem;
  line-height: 1;
}
.flag-icon {
  width: 1.1em;
  height: auto;
  vertical-align: middle;
  border-radius: 2px;
  display: inline-block;
}
.lang-country__text {
  overflow: hidden;
  text-overflow: ellipsis;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  background: rgba(0,191,99,.12);
  border: 1px solid rgba(0,191,99,.28);
  color: var(--g400);
  font-size: .73rem;
  font-weight: 700;
  letter-spacing: .03em;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s, border-color .2s;
  line-height: 1;
}
.lang-toggle .lang-flag {
  font-size: 1.1rem;
  line-height: 1;
}
.lang-toggle:hover {
  background: rgba(0,191,99,.22);
  border-color: var(--g400);
}
.lang-toggle::after {
  content: '';
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .6;
}

.lang-menu {
  display: none;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: calc(100% + 5px);
  right: 0;
  min-width: 210px;
  background: rgba(22,30,40,.99);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px rgba(0,0,0,.55);
  padding: 5px;
  flex-direction: column;
  z-index: 1010;
  transition: opacity .15s, visibility .15s;
}

.lang-opt {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: .84rem;
  font-weight: 500;
  color: rgba(255,255,255,.65);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background .15s, color .15s;
  text-align: left;
}
.lang-opt:hover {
  background: rgba(255,255,255,.06);
  color: var(--wh);
}
.lang-opt--sel {
  color: var(--g400);
  background: var(--g100);
  font-weight: 600;
}
.lang-opt__flag {
  font-size: 1.1rem;
  flex-shrink: 0;
}
.lang-opt__code {
  margin-left: auto;
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: rgba(255,255,255,.3);
}

@media (max-width: 820px) {
  .lang-country {
    font-size: .7rem;
    padding: 4px 8px;
    max-width: 130px;
  }
  .lang-toggle {
    font-size: .7rem;
    padding: 4px 8px;
  }
}

@media (max-width: 640px) {
  .lang-country__text { display: none; }
  .lang-country {
    max-width: none;
    padding: 5px 8px;
    gap: 0;
  }
  .lang-menu { right: -50px; }
}


/* ═══════════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: var(--hh);
}

.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(0,191,99,.05) 0%, transparent 50%),
    radial-gradient(ellipse 60% 80% at 75% 30%, rgba(0,191,99,.04) 0%, transparent 50%),
    radial-gradient(ellipse 70% 70% at 60% 80%, rgba(0,150,80,.04) 0%, transparent 50%),
    var(--dark);
}
.hero__overlay {
  position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(
    160deg,
    rgba(10,15,20,.78) 0%,
    rgba(10,15,20,.62) 50%,
    rgba(0,191,99,.08) 100%
  );
}
.hero__grid {
  position: absolute; inset: -50%; z-index: 1;
  background-image: radial-gradient(circle, rgba(0,191,99,.07) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridDrift 20s linear infinite;
  pointer-events: none;
}
.hero__particle {
  position: absolute; z-index: 1;
  border-radius: 50%;
  background: var(--g400);
  pointer-events: none;
  will-change: transform, opacity;
}
.hero__particle--1 { width:4px; height:4px; top:15%; left:10%;  animation:floatA 8s infinite; }
.hero__particle--2 { width:3px; height:3px; top:25%; left:88%;  animation:floatB 7s infinite .5s; }
.hero__particle--3 { width:6px; height:6px; top:70%; left:14%;  animation:floatA 9s infinite 1s; box-shadow:0 0 12px rgba(0,191,99,.5); }
.hero__particle--4 { width:3px; height:3px; top:80%; left:78%;  animation:floatB 8s infinite 1.5s; }
.hero__particle--5 { width:2px; height:2px; top:40%; left:50%;  animation:floatA 10s infinite 2s; }
.hero__particle--6 { width:5px; height:5px; top:55%; left:32%;  animation:floatB 7.5s infinite .8s; box-shadow:0 0 10px rgba(0,191,99,.4); }
.hero__particle--7 { width:3px; height:3px; top:8%;  left:65%;  animation:floatA 9.5s infinite 1.2s; }
.hero__particle--8 { width:4px; height:4px; top:38%; left:93%;  animation:floatB 8.5s infinite 2.2s; }
.hero__deco {
  position: absolute; inset: 0; z-index: 1;
  width: 100%; height: 100%;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 3;
  padding: 60px 24px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.hero__badge {
  display: inline-block;
  background: var(--g100);
  border: 1px solid rgba(0,191,99,.3);
  color: var(--g400);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
}

.hero__title {
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  max-width: 780px;
}
.hero__title--accent { color: var(--g400); }

.hero__sub {
  color: rgba(255,255,255,.65);
  font-size: clamp(.9rem, 1.8vw, 1.15rem);
  font-weight: 400;
  max-width: 560px;
}

.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }

/* Rutas de entrada (home) */
.hero__routes {
  width: min(980px, 100%);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.route-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 18px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  text-align: left;
  transition: transform var(--trans), border-color var(--trans), background var(--trans), box-shadow var(--trans);
}

.route-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.06);
  border-color: rgba(0,191,99,.28);
  box-shadow: 0 18px 50px rgba(0,0,0,.35), 0 0 0 1px rgba(0,191,99,.06);
}

.route-card__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0,191,99,.10);
  border: 1px solid rgba(0,191,99,.22);
  color: var(--g400);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.route-card__title {
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -.01em;
  line-height: 1.25;
  color: var(--wh);
  margin: 0;
}

.route-card__desc {
  font-size: .9rem;
  color: var(--txt);
  line-height: 1.6;
  margin: 0;
}

.route-card__cta {
  margin-top: auto;
  font-size: .85rem;
  font-weight: 650;
  color: var(--g400);
  letter-spacing: .01em;
}

/* Stats */
.hero__stats {
  display: flex;
  align-items: center;
  gap: 0;
  margin-top: 32px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
  padding: 20px 32px;
  backdrop-filter: blur(8px);
  flex-wrap: wrap;
}
.hero__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 28px;
  gap: 4px;
}
.hero__stat-num   { font-size: 1.6rem; font-weight: 800; color: var(--g400); }
.hero__stat-label { font-size: .72rem; color: var(--txt); text-align: center; letter-spacing: .02em; }
.hero__stat-sep   { width: 1px; height: 40px; background: var(--bdr); }

/* Scroll arrow */
.hero__scroll {
  position: absolute;
  bottom: 28px;
  z-index: 1;
  color: rgba(255,255,255,.4);
  animation: bounce 2s ease-in-out infinite;
  transition: color var(--trans);
}
.hero__scroll:hover { color: var(--g400); }

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

@keyframes floatA {
  0%, 100% { transform: translate(0, 0) scale(1);   opacity: .3; }
  25%      { transform: translate(50px, -30px) scale(1.6); opacity: .9; }
  50%      { transform: translate(90px, 15px) scale(.7);  opacity: .2; }
  75%      { transform: translate(20px, 45px) scale(1.3); opacity: .6; }
}
@keyframes floatB {
  0%, 100% { transform: translate(0, 0) scale(1);    opacity: .3; }
  33%      { transform: translate(-60px, -20px) scale(1.8); opacity: .8; }
  66%      { transform: translate(-35px, 35px) scale(.6);  opacity: .4; }
}
@keyframes gridDrift {
  0%   { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(30px, 15px) rotate(1.5deg); }
}

/* DNA Helix pulse animation */
.dna-helix {
  animation: dnaPulse 4s ease-in-out infinite;
}
@keyframes dnaPulse {
  0%, 100% { opacity: .18; }
  50%      { opacity: .28; }
}

/* Data flow pulse */
.data-flow circle {
  animation: nodePulse 3s ease-in-out infinite;
}
.data-flow circle:nth-child(2) { animation-delay: .4s; }
.data-flow circle:nth-child(3) { animation-delay: .8s; }
.data-flow circle:nth-child(4) { animation-delay: 1.2s; }
.data-flow circle:nth-child(5) { animation-delay: .6s; }
.data-flow circle:nth-child(6) { animation-delay: 1s; }
.data-flow circle:nth-child(7) { animation-delay: .3s; }
.data-flow circle:nth-child(8) { animation-delay: .7s; }
@keyframes nodePulse {
  0%, 100% { r: 3; opacity: .15; }
  50%      { r: 5; opacity: .35; }
}

/* Floating molecules */
.float-mol {
  animation: floatMol 6s ease-in-out infinite;
}
.float-mol:nth-child(2) { animation-delay: 1.5s; }
.float-mol:nth-child(3) { animation-delay: 3s; }
.float-mol:nth-child(4) { animation-delay: 4.5s; }
@keyframes floatMol {
  0%, 100% { transform: translate(0, 0); opacity: .2; }
  50%      { transform: translate(15px, -20px); opacity: .4; }
}

/* ── Wave Dividers ────────────────────────────────────────────── */
.wave-divider {
  position: relative;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  margin-top: -1px;
}
.wave-divider svg {
  display: block;
  width: 100%;
  height: 60px;
}
.wave-divider--flip {
  transform: rotate(180deg);
  margin-top: 0;
  margin-bottom: -1px;
}


/* ═══════════════════════════════════════════════════════════════
   SECTION HEADERS
═══════════════════════════════════════════════════════════════ */
.section-head {
  margin-bottom: 56px;
  max-width: 680px;
}
.section-head--center {
  text-align: center;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  color: var(--g400);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-tag--dark { color: var(--g500); }

.section-title {
  font-size: clamp(1.7rem, 3.5vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin-bottom: 16px;
}
.section-title--dark { color: var(--light-txt); }

.section-desc {
  color: var(--txt);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 600px;
}
.section-desc--dark { color: #4a5568; }

.section-cta { text-align: center; margin-top: 52px; }


/* ═══════════════════════════════════════════════════════════════
   BIO GRID (Servicios Bioinformáticos)
═══════════════════════════════════════════════════════════════ */
.bio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.bio-card {
  display: flex;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.bio-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,191,99,.35);
  box-shadow: 0 12px 40px rgba(0,0,0,.4), 0 0 0 1px rgba(0,191,99,.12);
}
.bio-card--featured {
  grid-column: 1 / -1;
  border-color: rgba(0,191,99,.2);
  background: linear-gradient(135deg, rgba(0,191,99,.08) 0%, var(--card) 60%);
}
.bio-card--featured:hover { border-color: var(--g400); }

.bio-card__icon {
  flex-shrink: 0;
  width: 52px; height: 52px;
  background: var(--g100);
  border: 1px solid rgba(0,191,99,.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  color: var(--g400);
  transition: background var(--trans);
}
.bio-card:hover .bio-card__icon { background: var(--g200); }
.bio-card__icon svg { width: 100%; height: 100%; }

.bio-card__body { display: flex; flex-direction: column; gap: 6px; }
.bio-card__label {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--g400);
}
.bio-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--wh);
  line-height: 1.3;
}
.bio-card__text {
  font-size: .875rem;
  color: var(--txt);
  line-height: 1.7;
  flex: 1;
}
.bio-card__cta {
  font-size: .83rem;
  font-weight: 600;
  color: var(--g400);
  margin-top: 4px;
  transition: letter-spacing var(--trans);
}
.bio-card:hover .bio-card__cta { letter-spacing: .04em; }


/* ═══════════════════════════════════════════════════════════════
   PILLARS (Por qué BioSeryl)
═══════════════════════════════════════════════════════════════ */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.pillar {
  padding: 32px 24px;
  background: var(--wh);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 16px rgba(0,0,0,.07);
  transition: transform var(--trans), box-shadow var(--trans);
}
.pillar:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0,0,0,.12);
}

.pillar__num {
  font-size: 2.4rem;
  font-weight: 800;
  color: rgba(0,191,99,.2);
  line-height: 1;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
.pillar__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--light-txt);
  margin-bottom: 10px;
}
.pillar__text {
  font-size: .875rem;
  color: #567;
  line-height: 1.7;
}


/* ═══════════════════════════════════════════════════════════════
   BIO SHOWCASE (Asymmetric layout)
═══════════════════════════════════════════════════════════════ */
.bio-showcase {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: start;
}

.bio-showcase__featured {
  background: linear-gradient(135deg, rgba(0,191,99,.08) 0%, var(--card) 50%);
  border: 1px solid rgba(0,191,99,.2);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.bio-showcase__featured::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0,191,99,.12) 0%, transparent 70%);
  pointer-events: none;
}

.bio-showcase__icon {
  width: 56px;
  height: 56px;
  background: var(--g100);
  border: 1px solid rgba(0,191,99,.25);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--g400);
  margin-bottom: 20px;
}
.bio-showcase__icon svg { width: 28px; height: 28px; }

.bio-showcase__label {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--g400);
  margin-bottom: 12px;
}

.bio-showcase__title {
  font-size: 1.4rem;
  font-weight: 750;
  color: var(--wh);
  line-height: 1.3;
  margin-bottom: 14px;
}

.bio-showcase__text {
  color: var(--txt);
  font-size: .92rem;
  line-height: 1.75;
}

.bio-showcase__grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bio-showcase__card {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans);
  position: relative;
  overflow: hidden;
}
.bio-showcase__card:hover {
  transform: translateX(6px);
  border-color: rgba(0,191,99,.25);
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
}
.bio-showcase__card::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--g400);
  opacity: 0;
  transition: opacity var(--trans);
}
.bio-showcase__card:hover::after { opacity: 1; }

.bio-showcase__card-num {
  font-size: .7rem;
  font-weight: 700;
  color: rgba(0,191,99,.4);
  letter-spacing: .05em;
  margin-bottom: 8px;
}

.bio-showcase__card h4 {
  font-size: .95rem;
  font-weight: 700;
  color: var(--wh);
  margin-bottom: 8px;
}

.bio-showcase__card p {
  font-size: .85rem;
  color: var(--txt);
  line-height: 1.6;
}

@media (max-width: 820px) {
  .bio-showcase { grid-template-columns: 1fr; }
}
/* ═══════════════════════════════════════════════════════════════
   ISO SECTION
═══════════════════════════════════════════════════════════════ */
.iso-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.iso-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.iso-img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  display: block;
  position: relative;
  z-index: 1;
}
.iso-img-glow {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle, rgba(0,191,99,.18) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.iso-content .section-title { color: var(--wh); }
.iso-content .section-desc  { color: var(--txt); margin-bottom: 32px; }

.iso-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}
.iso-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.iso-list__icon {
  color: var(--g400);
  font-size: .9rem;
  flex-shrink: 0;
  margin-top: 2px;
}
.iso-list li strong {
  display: block;
  font-size: .95rem;
  font-weight: 700;
  color: var(--wh);
  margin-bottom: 4px;
}
.iso-list li p {
  font-size: .875rem;
  color: var(--txt);
  line-height: 1.6;
}


/* ═══════════════════════════════════════════════════════════════
   ACADEMY
═══════════════════════════════════════════════════════════════ */
.academy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.academy-card {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform var(--trans), border-color var(--trans), box-shadow var(--trans);
  position: relative;
  overflow: hidden;
}
.academy-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,191,99,.06) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--trans);
}
.academy-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,191,99,.35);
  box-shadow: 0 20px 50px rgba(0,0,0,.4), 0 0 0 1px rgba(0,191,99,.08);
}
.academy-card:hover::before { opacity: 1; }

.academy-card__tag {
  display: inline-block;
  background: var(--g100);
  color: var(--g400);
  border: 1px solid rgba(0,191,99,.2);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  width: fit-content;
}
.academy-card__tag--free {
  background: rgba(234,179,8,.12);
  border-color: rgba(234,179,8,.25);
  color: #d4a017;
}

.academy-card__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--wh);
  line-height: 1.35;
  flex: 1;
}
.academy-card__text {
  font-size: .86rem;
  color: var(--txt);
  line-height: 1.65;
}


/* ═══════════════════════════════════════════════════════════════
   CONTACTO
═══════════════════════════════════════════════════════════════ */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.contact-info .section-title { color: var(--wh); }
.contact-info__desc {
  color: var(--txt);
  font-size: .95rem;
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}
.channel {
  display: flex;
  align-items: center;
  gap: 16px;
}
.channel__icon {
  width: 44px; height: 44px;
  background: rgba(37,211,102,.15);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: #25d366;
  flex-shrink: 0;
  padding: 10px;
}
.channel__icon--mail {
  background: var(--g100);
  color: var(--g400);
}
.channel__icon svg { width: 100%; height: 100%; }
.channel strong { display: block; font-size: .875rem; font-weight: 700; margin-bottom: 2px; }
.channel a { font-size: .85rem; color: var(--txt); }
.channel a:hover { color: var(--g400); }

/* Form */
.contact-form-wrap {
  background: var(--card);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}
.contact-form-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--g400), rgba(0,191,99,.3), var(--g400));
}

.contact-form { display: flex; flex-direction: column; gap: 18px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group         { display: flex; flex-direction: column; gap: 7px; }
.form-group label,
.form-group__label  { font-size: .82rem; font-weight: 600; color: rgba(255,255,255,.7); }

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-sm);
  color: var(--wh);
  font: inherit;
  font-size: .9rem;
  transition: border-color var(--trans), box-shadow var(--trans), background var(--trans);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,.25); }
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--g400);
  background: rgba(0,191,99,.04);
  box-shadow: 0 0 0 3px rgba(0,191,99,.12);
}
.contact-form select option { background: var(--mid); }
.contact-form input.invalid,
.contact-form textarea.invalid { border-color: #f87171; }

.form-group__label { display: block; }
.checkbox-row { display: flex; gap: 20px; padding-top: 4px; }
.check-opt {
  display: flex; align-items: center; gap: 8px;
  font-size: .875rem; color: var(--txt); cursor: pointer;
}
.check-opt input { accent-color: var(--g400); width: 16px; height: 16px; }

.form-msg {
  font-size: .85rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  text-align: center;
}
.form-msg--ok  { background: rgba(0,191,99,.12); color: #4ade80; border: 1px solid rgba(0,191,99,.2); }
.form-msg--err { background: rgba(248,113,113,.1); color: #f87171; border: 1px solid rgba(248,113,113,.2); }


/* ═══════════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════════ */
.site-footer { background: #060b0f; padding: 64px 0 0; }

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 0.8fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--bdr);
}

.footer-logo    { height: 36px; width: auto; margin-bottom: 16px; }
.footer-tagline { font-size: .875rem; color: var(--txt); margin-bottom: 6px; }
.footer-nit     { font-size: .78rem; color: rgba(255,255,255,.3); }

.footer-nav-group h5,
.footer-contact-group h5 {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  margin-bottom: 16px;
}
.footer-nav-group ul     { display: flex; flex-direction: column; gap: 10px; }
.footer-nav-group a      { font-size: .875rem; color: var(--txt); }
.footer-nav-group a:hover{ color: var(--wh); }

.footer-contact-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-contact-group h5 {
  margin-bottom: 0;
}
.footer-contact-group p {
  margin-bottom: 0;
}
.footer-contact-group a {
  font-size: .875rem;
  color: var(--txt);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-contact-group a:hover { color: var(--wh); }
.footer-contact-group a svg { flex-shrink: 0; opacity: .5; width: 14px; height: 14px; }
.footer-contact-group a:hover svg { opacity: 1; }

.footer-wa {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 0;
  font-size: .875rem;
  font-weight: 600;
  color: #25d366;
}
.footer-wa:hover { color: var(--wh); }

.footer-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 0;
  font-size: .875rem;
  font-weight: 600;
  color: var(--txt);
  transition: color .2s;
}
.footer-linkedin:hover { color: #0a66c2; }

.footer-bottom {
  padding: 20px 28px;
  text-align: center;
  font-size: .78rem;
  color: rgba(255,255,255,.25);
  max-width: var(--max);
  margin: 0 auto;
}


/* ═══════════════════════════════════════════════════════════════
   ANIMACIONES
═══════════════════════════════════════════════════════════════ */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}


/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */

/* Tablet ≤ 1024px */
@media (max-width: 1024px) {
  .bio-grid          { grid-template-columns: 1fr; }
  .bio-card--featured{ grid-column: auto; }
  .pillars-grid      { grid-template-columns: 1fr 1fr; }
  .footer-inner      { grid-template-columns: 1fr 1fr; gap: 36px; }
  .iso-inner         { gap: 48px; }
}

/* Tablet ≤ 820px */
@media (max-width: 820px) {
  .section        { padding: 72px 0; }
  .header-cta     { display: none; }
  .iso-inner      { grid-template-columns: 1fr; }
  .iso-img-wrap   { max-width: 420px; margin: 0 auto; }
  .academy-grid   { grid-template-columns: 1fr 1fr; }
  .contact-inner  { grid-template-columns: 1fr; gap: 40px; }
  .form-row       { grid-template-columns: 1fr; }
  .hero__stats    { padding: 16px 20px; }
  .hero__stat     { padding: 0 16px; }

  .hero__routes { grid-template-columns: 1fr; }
}

/* Mobile ≤ 640px */
@media (max-width: 640px) {
  :root { --hh: 60px; }

  .hamburger     { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--hh); left: 0; right: 0;
    background: rgba(10,15,20,.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--bdr);
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
  }
  .main-nav.open   { max-height: 420px; padding: 12px 0 20px; }
  .nav-list        { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link        {
    display: block;
    padding: 14px 24px;
    border-radius: 0;
    font-size: .95rem;
    border-bottom: 1px solid rgba(255,255,255,.05);
  }

  .section         { padding: 60px 0; }
  .hero__title     { font-size: 2rem; }
  .hero__actions   { flex-direction: column; width: 100%; max-width: 300px; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .hero__stats     { flex-direction: column; gap: 16px; padding: 20px; }
  .hero__stat-sep  { width: 60px; height: 1px; }

  .bio-card        { flex-direction: column; }
  .pillars-grid    { grid-template-columns: 1fr; }
  .academy-grid    { grid-template-columns: 1fr; }
  .section-head    { max-width: 100%; }
  .section-head--center { text-align: left; }

  .contact-form-wrap { padding: 24px 16px; }
  .footer-inner    { grid-template-columns: 1fr; gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .hero__scroll { animation: none; }
  .hero__particle { animation: none !important; }
  .hero__grid { animation: none !important; }

  [data-animate] {
    transition: none;
    transform: none;
    opacity: 1;
  }
}