/* =========================================================
   BioBridge — Hoja de estilos global
   Paleta: Azul corporativo + Verde biotecnología
   ========================================================= */

:root{
  --blue-900:#0d2847;
  --blue-800:#123a63;
  --blue-700:#164a7e;
  --blue-600:#1b5c9e;
  --blue-500:#2470bd;
  --green-600:#2e9e4f;
  --green-500:#3cb95f;
  --green-400:#5fd17f;
  --green-100:#e7f7ec;
  --blue-100:#e8f1fa;
  --gray-900:#16202b;
  --gray-700:#3d4a58;
  --gray-500:#6b7787;
  --gray-300:#c9d2db;
  --gray-100:#f4f7fa;
  --white:#ffffff;
  --shadow-sm:0 2px 8px rgba(13,40,71,0.08);
  --shadow-md:0 8px 24px rgba(13,40,71,0.12);
  --shadow-lg:0 16px 48px rgba(13,40,71,0.18);
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:24px;
  --maxw:1200px;
  --font-head:'Poppins', 'Segoe UI', system-ui, sans-serif;
  --font-body:'Inter', 'Segoe UI', system-ui, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--gray-900);
  background:var(--white);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  color:var(--blue-900);
  line-height:1.2;
  margin:0 0 .6em;
  font-weight:600;
}
h1{font-size:clamp(2.2rem,4.5vw,3.4rem); font-weight:700;}
h2{font-size:clamp(1.7rem,3vw,2.4rem);}
h3{font-size:1.3rem;}
p{margin:0 0 1em; color:var(--gray-700);}
a{color:var(--blue-600); text-decoration:none;}
img{max-width:100%; display:block;}
ul{margin:0; padding:0;}
.container{max-width:var(--maxw); margin:0 auto; padding:0 24px;}
.section{padding:80px 0;}
.section-alt{background:var(--gray-100);}
.section-dark{background:linear-gradient(135deg,var(--blue-900),var(--blue-700)); color:var(--white);}
.section-dark h2, .section-dark h3{color:var(--white);}
.section-dark p{color:#cfe0f1;}

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--green-100); color:var(--green-600);
  font-weight:600; font-size:.8rem; letter-spacing:.04em;
  text-transform:uppercase; padding:6px 14px; border-radius:999px;
  margin-bottom:16px;
}
.eyebrow.on-dark{background:rgba(255,255,255,.12); color:#8fe3a6;}
.eyebrow .dot{width:7px; height:7px; border-radius:50%; background:var(--green-500); display:inline-block;}

.section-head{max-width:760px; margin:0 auto 48px; text-align:center;}
.section-head.left{margin:0 0 48px; text-align:left;}
.section-head p{font-size:1.05rem;}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 28px; border-radius:10px; font-weight:600; font-size:.98rem;
  border:2px solid transparent; cursor:pointer; transition:.2s ease;
  text-align:center; white-space:nowrap;
}
.btn-primary{background:var(--green-600); color:var(--white);}
.btn-primary:hover{background:var(--green-500); transform:translateY(-2px); box-shadow:var(--shadow-md);}
.btn-outline{background:transparent; color:var(--white); border-color:rgba(255,255,255,.6);}
.btn-outline:hover{background:rgba(255,255,255,.12); border-color:var(--white);}
.btn-outline-blue{background:transparent; color:var(--blue-700); border-color:var(--blue-600);}
.btn-outline-blue:hover{background:var(--blue-100);}
.btn-block{width:100%;}
.btn-sm{padding:10px 18px; font-size:.88rem;}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky; top:0; z-index:1000;
  background:rgba(255,255,255,.92); backdrop-filter:blur(10px);
  border-bottom:1px solid var(--gray-300);
}
.nav-wrap{display:flex; align-items:center; justify-content:space-between; flex-wrap:nowrap; gap:10px; padding:14px 24px; max-width:var(--maxw); margin:0 auto;}
.brand{display:flex; align-items:center; gap:10px; font-family:var(--font-head); font-weight:700; font-size:1.15rem; color:var(--blue-900); flex-shrink:0;}
.brand small{display:block; font-family:var(--font-body); font-weight:500; font-size:.6rem; color:var(--gray-500); letter-spacing:.03em; white-space:nowrap;}
.brand svg{width:34px; height:34px; flex-shrink:0;}

.nav-links{display:flex; align-items:center; gap:0; list-style:none; flex-wrap:nowrap;}
.nav-links a{
  display:block; padding:8px 9px; border-radius:8px; font-size:.83rem; font-weight:500; color:var(--gray-700); white-space:nowrap;
}
.nav-links a:hover, .nav-links a.active{background:var(--blue-100); color:var(--blue-700);}
.nav-links > li{position:relative;}
.nav-links .dropdown{
  list-style:none; position:absolute; top:calc(100% + 6px); left:0; background:var(--white);
  border:1px solid var(--gray-300); border-radius:10px; box-shadow:var(--shadow-md); min-width:200px;
  padding:6px; display:none; z-index:60;
}
.nav-links li.has-dropdown:hover .dropdown{display:block;}
.nav-links .dropdown a{padding:10px 12px; border-radius:6px; white-space:normal;}
@media (max-width:1300px){
  .nav-links .dropdown{position:static; display:block; box-shadow:none; border:none; padding:0 0 0 14px; margin-top:2px;}
}

.nav-right{display:flex; align-items:center; gap:8px; flex-shrink:0;}

.lang-select{position:relative;}
.lang-btn{
  display:flex; align-items:center; gap:6px; padding:8px 10px; border-radius:8px;
  border:1px solid var(--gray-300); background:var(--white); font-size:.82rem; font-weight:600; color:var(--gray-700); cursor:pointer; white-space:nowrap;
}
.lang-menu{
  position:absolute; right:0; top:calc(100% + 8px); background:var(--white); border:1px solid var(--gray-300);
  border-radius:10px; box-shadow:var(--shadow-md); min-width:170px; padding:6px; display:none; z-index:50;
}
.lang-menu.open{display:block;}
.lang-menu a{
  width:100%; text-align:left; padding:9px 12px; border-radius:6px; border:none; background:none; cursor:pointer;
  font-size:.88rem; color:var(--gray-700); display:flex; justify-content:space-between; align-items:center; gap:10px;
  text-decoration:none; box-sizing:border-box;
}
.lang-menu a:hover{background:var(--gray-100); color:var(--blue-700);}
.lang-menu a.lang-current{font-weight:700; color:var(--blue-800); background:var(--blue-100);}
.lang-tag{font-size:.68rem; background:var(--gray-100); padding:2px 6px; border-radius:5px; color:var(--gray-500); white-space:nowrap;}
.lang-current .lang-tag{background:rgba(255,255,255,.6);}

.menu-toggle{display:none; background:none; border:none; cursor:pointer; padding:6px; flex-shrink:0;}
.menu-toggle span{display:block; width:22px; height:2px; background:var(--blue-900); margin:5px 0; transition:.2s; border-radius:2px;}
.menu-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.active span:nth-child(2){opacity:0;}
.menu-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

@media (max-width:1300px){
  .nav-wrap{flex-wrap:wrap;}
  .nav-links{
    position:absolute; top:100%; left:0; right:0; width:100%;
    background:var(--white); border-top:1px solid var(--gray-300); box-shadow:var(--shadow-lg);
    flex-direction:column; align-items:stretch;
    padding:10px 16px 20px; gap:2px; max-height:80vh;
    transform:translateY(-8px); opacity:0; visibility:hidden; pointer-events:none;
    transition:transform .2s ease, opacity .2s ease; overflow-y:auto;
  }
  .nav-links.open{transform:translateY(0); opacity:1; visibility:visible; pointer-events:auto;}
  .nav-links a{padding:14px 12px; font-size:1rem; white-space:normal;}
  .menu-toggle{display:block;}
}
@media (max-width:560px){
  .lang-select{display:none;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative; overflow:hidden;
  background:linear-gradient(135deg,var(--blue-900) 0%,var(--blue-700) 55%,var(--blue-600) 100%);
  color:var(--white); padding:96px 0 110px;
}
.hero::before{
  content:''; position:absolute; inset:0; opacity:.5; pointer-events:none;
  background-image:radial-gradient(circle at 15% 20%, rgba(63,185,95,.25), transparent 40%),
                    radial-gradient(circle at 85% 75%, rgba(63,185,95,.18), transparent 45%);
}
.hero-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:48px; align-items:center; position:relative; z-index:2;}
.hero h1{color:var(--white); margin-bottom:22px;}
.hero .lead{font-size:1.15rem; color:#d7e6f6; max-width:560px; margin-bottom:34px;}
.hero-ctas{display:flex; gap:14px; flex-wrap:wrap;}
.hero-badge{
  display:inline-flex; align-items:center; gap:8px; background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.25); padding:8px 16px; border-radius:999px; font-size:.85rem; font-weight:600; margin-bottom:24px;
}
.hero-badge .dot{width:8px; height:8px; border-radius:50%; background:var(--green-400);}
.hero-art{position:relative; z-index:2;}

/* Decorative network/globe visual made in pure CSS/SVG (no external images) */
.hero-visual{
  position:relative; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius-lg); padding:28px; backdrop-filter:blur(6px);
}
.hero-visual svg{width:100%; height:auto;}
.hero-stats{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:26px;}
.hero-stat{background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.14); border-radius:12px; padding:14px; text-align:center;}
.hero-stat b{display:block; font-family:var(--font-head); font-size:1.4rem; color:var(--green-400);}
.hero-stat span{font-size:.72rem; color:#c9dcf0;}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
}

/* Page header (sub-pages) */
.page-hero{
  background:linear-gradient(135deg,var(--blue-900),var(--blue-700));
  color:var(--white); padding:64px 0 60px;
  position:relative; overflow:hidden;
}
.page-hero::after{
  content:''; position:absolute; right:-80px; top:-80px; width:340px; height:340px; border-radius:50%;
  background:radial-gradient(circle,rgba(63,185,95,.28),transparent 70%);
}
.page-hero h1{color:var(--white); margin-bottom:14px;}
.page-hero p{color:#d7e6f6; max-width:680px; font-size:1.05rem;}
.breadcrumb{font-size:.82rem; color:#a9c4e0; margin-bottom:16px;}
.breadcrumb a{color:#a9c4e0;}
.breadcrumb span{color:var(--green-400); margin:0 6px;}

/* ---------- Cards ---------- */
.grid{display:grid; gap:28px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:980px){ .grid-3,.grid-4{grid-template-columns:repeat(2,1fr);} }
@media (max-width:640px){ .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;} }

.card{
  background:var(--white); border:1px solid var(--gray-300); border-radius:var(--radius-md);
  padding:30px; transition:.2s ease;
}
.card:hover{box-shadow:var(--shadow-md); transform:translateY(-4px); border-color:transparent;}
.card .icon{
  width:52px; height:52px; border-radius:12px; background:var(--green-100); color:var(--green-600);
  display:flex; align-items:center; justify-content:center; margin-bottom:18px;
}
.card .icon svg{width:26px; height:26px;}
.card h3{margin-bottom:10px;}
.card p{margin-bottom:0; font-size:.95rem;}

.tag{
  display:inline-block; padding:5px 12px; border-radius:999px; font-size:.72rem; font-weight:700;
  letter-spacing:.03em; text-transform:uppercase;
}
.tag-green{background:var(--green-100); color:var(--green-600);}
.tag-blue{background:var(--blue-100); color:var(--blue-700);}
.tag-gray{background:var(--gray-100); color:var(--gray-500);}

/* Value / stat blocks */
.value-card{text-align:center; padding:26px 20px;}
.value-card .icon{margin:0 auto 16px;}

/* Project cards (I+D) */
.project-card{border:1px solid var(--gray-300); border-radius:var(--radius-md); overflow:hidden; background:var(--white);}
.project-head{background:linear-gradient(135deg,var(--blue-800),var(--blue-600)); color:var(--white); padding:24px 28px;}
.project-head h3{color:var(--white); margin-bottom:6px;}
.project-meta{display:flex; flex-wrap:wrap; gap:10px; margin-top:10px;}
.project-meta .tag{background:rgba(255,255,255,.16); color:#fff;}
.project-body{padding:26px 28px;}
.project-body h4{font-size:.82rem; text-transform:uppercase; letter-spacing:.04em; color:var(--green-600); margin:18px 0 8px;}
.project-body h4:first-child{margin-top:0;}
.project-body dl{margin:0 0 8px;}
.project-body dt{font-weight:600; color:var(--blue-800); font-size:.85rem;}
.project-body dd{margin:0 0 10px; color:var(--gray-700); font-size:.92rem;}

/* Team cards */
.team-card{text-align:center; padding:28px 20px;}
.avatar{
  width:96px; height:96px; border-radius:50%; margin:0 auto 16px; background:var(--blue-100);
  display:flex; align-items:center; justify-content:center; color:var(--blue-600); font-family:var(--font-head); font-weight:700; font-size:1.6rem;
}
.role{color:var(--green-600); font-weight:600; font-size:.85rem; margin-bottom:8px;}

/* Job listing */
.job-card{border:1px solid var(--gray-300); border-radius:var(--radius-md); padding:26px 28px; background:var(--white);}
.job-card h3{margin-bottom:2px;}
.job-zh{color:var(--gray-500); font-size:.88rem; margin-bottom:14px;}
.job-card ul{list-style:none; margin-bottom:14px;}
.job-card li{position:relative; padding-left:20px; margin-bottom:8px; font-size:.92rem; color:var(--gray-700);}
.job-card li::before{content:'\2713'; position:absolute; left:0; color:var(--green-600); font-weight:700;}
.job-salary{font-weight:700; color:var(--blue-800);}

/* News cards */
.news-card{border:1px solid var(--gray-300); border-radius:var(--radius-md); overflow:hidden; background:var(--white);}
.news-thumb{
  height:170px; background:linear-gradient(135deg,var(--blue-700),var(--green-600)); position:relative;
  display:flex; align-items:center; justify-content:center;
}
.news-thumb svg{width:52px; height:52px; opacity:.5; color:#fff;}
.news-body{padding:22px 24px;}
.news-date{font-size:.78rem; color:var(--gray-500); font-weight:600; text-transform:uppercase; letter-spacing:.03em; margin-bottom:8px;}
.news-body h3{font-size:1.1rem; margin-bottom:10px;}

/* Timeline / process */
.steps{counter-reset:step; display:grid; gap:22px;}
.step{display:flex; gap:18px; align-items:flex-start;}
.step-num{
  counter-increment:step; flex-shrink:0; width:40px; height:40px; border-radius:50%; background:var(--blue-800); color:#fff;
  display:flex; align-items:center; justify-content:center; font-weight:700; font-family:var(--font-head);
}
.step-num::before{content:counter(step);}

/* Concentric alliance map */
.orbit-wrap{display:flex; justify-content:center; padding:20px 0;}
.orbit{position:relative; width:min(560px,100%); aspect-ratio:1/1;}
.orbit-ring{position:absolute; border-radius:50%; border:2px dashed var(--gray-300); top:50%; left:50%; transform:translate(-50%,-50%);}
.orbit-core{
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); width:110px; height:110px; border-radius:50%;
  background:linear-gradient(135deg,var(--blue-800),var(--green-600)); color:#fff; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-head); font-weight:700; text-align:center; font-size:.9rem; box-shadow:var(--shadow-lg); z-index:5; padding:8px;
}
.orbit-label{
  position:absolute; background:#fff; border:1px solid var(--gray-300); border-radius:999px; padding:6px 14px; font-size:.76rem; font-weight:600;
  color:var(--blue-800); box-shadow:var(--shadow-sm); white-space:nowrap;
}

/* Forms */
.form-grid{display:grid; grid-template-columns:1fr 1fr; gap:18px;}
.form-grid .full{grid-column:1/-1;}
.field label{display:block; font-size:.85rem; font-weight:600; color:var(--blue-900); margin-bottom:6px;}
.field input, .field select, .field textarea{
  width:100%; padding:12px 14px; border:1px solid var(--gray-300); border-radius:8px; font-family:var(--font-body);
  font-size:.95rem; color:var(--gray-900); background:var(--white); transition:.15s;
}
.field input:focus, .field select:focus, .field textarea:focus{outline:none; border-color:var(--blue-600); box-shadow:0 0 0 3px var(--blue-100);}
.field textarea{resize:vertical; min-height:120px;}
.form-note{font-size:.82rem; color:var(--gray-500); margin-top:10px;}
.form-success{
  display:none; background:var(--green-100); color:var(--green-600); border-radius:10px; padding:16px 18px; font-weight:600; margin-top:16px;
}
.form-success.show{display:block;}
@media (max-width:640px){ .form-grid{grid-template-columns:1fr;} }

/* Contact info list */
.info-list{list-style:none; display:grid; gap:20px;}
.info-list li{display:flex; gap:16px; align-items:flex-start;}
.info-list .icon{
  width:44px; height:44px; border-radius:10px; background:var(--blue-100); color:var(--blue-700); flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
}
.info-list .icon svg{width:22px; height:22px;}
.info-list h4{margin:0 0 4px; font-size:.95rem; color:var(--blue-900);}
.info-list p{margin:0; font-size:.9rem;}

.map-embed{
  width:100%; height:320px; border-radius:var(--radius-md); border:1px solid var(--gray-300);
  background:repeating-linear-gradient(45deg, var(--gray-100), var(--gray-100) 10px, #eef2f6 10px, #eef2f6 20px);
  display:flex; align-items:center; justify-content:center; color:var(--gray-500); font-size:.9rem; text-align:center; padding:20px; gap:10px; flex-direction:column;
}

/* CTA banner */
.cta-banner{
  background:linear-gradient(135deg,var(--green-600),var(--blue-700)); border-radius:var(--radius-lg); color:#fff;
  padding:56px; display:flex; align-items:center; justify-content:space-between; gap:30px; flex-wrap:wrap;
}
.cta-banner h2{color:#fff; margin-bottom:8px;}
.cta-banner p{color:#eaf6ee; margin-bottom:0;}

/* Gallery placeholder grid */
.gallery-item{
  aspect-ratio:4/3; border-radius:var(--radius-md); background:linear-gradient(135deg,var(--blue-100),var(--green-100));
  display:flex; align-items:center; justify-content:center; color:var(--blue-600); font-size:.82rem; text-align:center; padding:14px;
  border:1px dashed var(--gray-300);
}

/* Download resource cards */
.download-card{
  display:flex; align-items:center; gap:16px; border:1px solid var(--gray-300); border-radius:var(--radius-md);
  padding:20px 22px; background:var(--white);
}
.download-card .icon{width:46px; height:46px; border-radius:10px; background:var(--blue-100); color:var(--blue-700); display:flex; align-items:center; justify-content:center; flex-shrink:0;}
.download-card .icon svg{width:22px; height:22px;}
.download-card .grow{flex:1;}
.download-card h4{margin:0 0 4px; font-size:.95rem; color:var(--blue-900);}
.download-card p{margin:0; font-size:.82rem; color:var(--gray-500);}

/* Footer */
.site-footer{background:var(--blue-900); color:#c9d9ea; padding:64px 0 26px;}
.footer-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; margin-bottom:44px;}
.footer-brand{display:flex; align-items:center; gap:10px; color:#fff; font-family:var(--font-head); font-weight:700; font-size:1.15rem; margin-bottom:14px;}
.footer-brand svg{width:34px; height:34px;}
.site-footer h4{color:#fff; font-size:.92rem; margin-bottom:16px; letter-spacing:.02em;}
.site-footer ul{list-style:none;}
.site-footer li{margin-bottom:10px;}
.site-footer a{color:#a9c0d9; font-size:.9rem;}
.site-footer a:hover{color:#fff;}
.footer-social{display:flex; gap:10px; margin-top:6px;}
.footer-social a{
  width:36px; height:36px; border-radius:8px; background:rgba(255,255,255,.08); display:flex; align-items:center; justify-content:center;
}
.footer-social svg{width:18px; height:18px; color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12); padding-top:22px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:.8rem; color:#8fa5bd;}
.footer-legal{display:flex; gap:18px; flex-wrap:wrap;}
.footer-legal a{color:#8fa5bd; font-size:.8rem;}

@media (max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr; gap:32px;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .cta-banner{padding:36px 26px; flex-direction:column; text-align:center;}
  .section{padding:56px 0;}
}

.reveal{opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease;}
.reveal.visible{opacity:1; transform:none;}

.divider{height:1px; background:var(--gray-300); margin:48px 0;}