:root{
  --bg:#0b1020;--panel:#11172b;--muted:#a8b1c7;--text:#e8edf7;
  --brand:#4bb7ff;--brand-2:#8affc1;--border:#1c2745;--card:#0e1529
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;line-height:1.6}
a{color:var(--brand);text-decoration:none;transition:color .15s}
a:hover{color:#7dd3fc}
img{max-width:100%;display:block}
::selection{background:rgba(75,183,255,.25);color:#fff}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;z-index:10;background:rgba(11,16,32,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.site-header .container{display:flex;align-items:center;justify-content:center;height:62px}
.nav{display:flex;align-items:center;gap:6px}
.nav-link{color:var(--muted);font-size:.9rem;font-weight:500;padding:.4rem .7rem;border-radius:8px;transition:color .15s,background .15s}
.nav-link:hover{color:#fff;background:rgba(75,183,255,.1)}
.nav-link.brand{font-weight:700;color:#fff;font-size:1.05rem}
.nav-sep{width:1px;height:20px;background:var(--border);margin:0 4px}
.icon-btn{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:#131c36;transition:border-color .15s,transform .15s}
.icon-btn:hover{border-color:#2c5cff;transform:translateY(-1px)}
.icon-btn img{width:18px;height:18px;object-fit:contain;display:block}
.lang-wrap{position:relative;display:flex;align-items:center;gap:4px;background:#131c36;border:1px solid var(--border);border-radius:8px;padding:.3rem .5rem .3rem .4rem;transition:border-color .15s;cursor:pointer;user-select:none}
.lang-wrap:hover{border-color:var(--brand)}
.lang-icon{width:16px;height:16px;color:var(--muted);flex-shrink:0}
.lang-current{color:#cfe5ff;font-size:.85rem;display:flex;align-items:center;gap:5px}
.lang-current .lang-flag{width:16px;height:12px;border-radius:2px;flex-shrink:0}
.lang-dropdown{display:none;position:absolute;top:calc(100% + 6px);right:0;background:#131c36;border:1px solid var(--border);border-radius:8px;overflow:hidden;min-width:100px;z-index:20;box-shadow:0 8px 24px rgba(0,0,0,.4)}
.lang-dropdown.open{display:block}
.lang-option{display:flex;align-items:center;gap:8px;padding:.45rem .7rem;color:#cfe5ff;font-size:.85rem;cursor:pointer;transition:background .15s}
.lang-option:hover{background:rgba(75,183,255,.1)}
.lang-option.active{color:var(--brand)}
.lang-option .lang-flag{width:16px;height:12px;border-radius:2px;flex-shrink:0}
.btn{display:inline-block;background:var(--brand);color:#001025;font-weight:700;border-radius:10px;padding:.55rem .9rem;transition:transform .15s,box-shadow .15s;border:none;cursor:pointer;font-size:.9rem}
.btn:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(75,183,255,.3);color:#001025}
.btn.ghost{background:transparent;border:1px solid var(--brand);color:var(--text)}
.btn.ghost:hover{background:rgba(75,183,255,.08)}
.header-left{display:none}
.header-right{display:flex;align-items:center;gap:6px}

/* Hero & sections */
.hero{padding:56px 0 48px;background:linear-gradient(180deg,#0b1020 0%,#0c142e 100%)}
.hero h1{font-size:2rem;margin:0 0 8px;letter-spacing:-.5px}
.lead{color:var(--muted);font-size:1.05rem;margin:0 0 12px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.chip{border:1px solid var(--border);background:#152141;color:var(--brand-2);padding:.3rem .55rem;border-radius:999px;font-size:.82rem;transition:background .15s}
.chip:hover{background:#1a2d55}
.section{padding:40px 0}
.bullets{color:var(--muted);padding-left:18px;margin:12px 0 20px}
.bullets li{margin:.4rem 0}
.bullets b{color:var(--text)}
.subtle{color:var(--muted);font-size:.9rem}

/* Cards */
.grid.cards{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
@media(max-width:980px){.grid.cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid.cards{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 3px 16px rgba(0,0,0,.2);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,0,0,.35)}
.card-media{background:#0a1224}
.card-body{padding:16px;flex:1;display:flex;flex-direction:column}
.card-body h3{margin:0 0 6px;font-size:1.1rem}
.card-body p{color:var(--muted);margin:0 0 10px;font-size:.9rem;flex:1}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.tags span{border:1px solid var(--border);background:#131c36;color:#cfe5ff;border-radius:999px;padding:.2rem .5rem;font-size:.78rem}

/* Featured card (horizontal layout) */
.card[style*="grid-template-columns"] .card-media{border-radius:16px 0 0 16px}
.card[style*="grid-template-columns"] .carousel img{height:100%;min-height:260px}
@media(max-width:720px){
  .card[style*="grid-template-columns"]{display:flex!important;flex-direction:column!important}
  .card[style*="grid-template-columns"] .card-media{border-radius:16px 16px 0 0}
  .card[style*="grid-template-columns"] .carousel img{height:210px;min-height:unset}
}

/* Carousel */
.carousel{position:relative;overflow:hidden}
.carousel .slides{display:flex;transition:transform .5s ease}
.carousel img{width:100%;height:210px;object-fit:cover}
.carousel .prev,.carousel .next{
  position:absolute;top:50%;transform:translateY(-50%);
  border:0;background:rgba(0,0,0,.5);color:#fff;font-size:24px;
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;cursor:pointer;
  opacity:0;transition:opacity .2s
}
.carousel:hover .prev,.carousel:hover .next{opacity:1}
.carousel .prev{left:8px}.carousel .next{right:8px}

/* Tabs (accesibles) */
.tabs{display:flex;gap:12px;flex-wrap:wrap;margin:8px 0 24px;padding:0}
.tab{
  background:#121a2a;border:1px solid #223050;color:#b9dafc;
  padding:10px 18px;border-radius:999px;cursor:pointer;
  font-weight:600;letter-spacing:.2px;transition:.2s ease;font-size:.9rem
}
.tab:hover{border-color:#2e4e80;transform:translateY(-1px);background:#162040}
.tab[aria-selected="true"]{
  color:#0b1220;background:linear-gradient(180deg,#5cb8ff,#2ea7ff);
  border-color:transparent;box-shadow:0 6px 20px rgba(46,167,255,.25)
}
.tab:focus-visible{outline:2px solid #74c3ff;outline-offset:2px}
.tabpanels{margin-bottom:40px}
.tabpanels .panel[hidden]{display:none}
.tabpanels .panel h2{font-size:1.5rem;margin:0 0 8px;color:var(--text)}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:16px}
@media(max-width:720px){.gallery{grid-template-columns:1fr}}
.gallery img{
  border-radius:10px;border:1px solid var(--border);
  transition:transform .25s,box-shadow .25s,border-color .25s;
  cursor:pointer;background:var(--card)
}
.gallery img:hover{
  transform:scale(1.03);
  box-shadow:0 8px 30px rgba(0,0,0,.4);
  border-color:var(--brand)
}

/* Code blocks */
pre{
  background:#080e1e;border:1px solid var(--border);border-radius:10px;
  padding:16px 20px;overflow-x:auto;margin:16px 0;
  font-size:.85rem;line-height:1.7
}
code{font-family:'Fira Code',Consolas,'Courier New',monospace;color:#c9d8f0}
pre code{color:#c9d8f0}
:not(pre)>code{background:#131c36;padding:.15rem .4rem;border-radius:5px;font-size:.85em;color:var(--brand)}

/* Contact section */
.contact-block{max-width:760px}
.contact-channels{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0}
.contact-card{display:flex;flex-direction:column;align-items:center;gap:6px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px 12px;text-align:center;transition:transform .2s,border-color .2s,box-shadow .2s}
.contact-card:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:0 6px 24px rgba(75,183,255,.15)}
.contact-card svg{color:var(--brand)}
.contact-label{font-weight:700;font-size:.9rem;color:var(--text)}
.contact-value{font-size:.8rem;color:var(--muted)}
@media(max-width:640px){.contact-channels{grid-template-columns:1fr}}

/* Formulario */
.form{background:#0e152a;border:1px solid var(--border);border-radius:14px;padding:20px;margin-top:12px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.form-row{display:flex;flex-direction:column;margin-bottom:14px}
.form-row label{font-weight:600;margin-bottom:6px;font-size:.9rem}
.form-row input,.form-row textarea{background:#131c36;border:1px solid var(--border);border-radius:10px;color:#eaf2ff;padding:.6rem .8rem;font-size:.9rem;transition:border-color .15s,box-shadow .15s}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:#2c5cff;box-shadow:0 0 0 3px rgba(76,140,255,.15)}
.form-actions{display:flex;align-items:center;gap:12px;margin-top:4px}
.notice{color:#a8ffc8;font-size:.9rem}

/* Footer */
.site-footer{margin-top:40px;padding:20px 0;border-top:1px solid var(--border);text-align:center}
.site-footer .container{display:flex;align-items:center;justify-content:center;gap:16px;font-size:.85rem;color:var(--muted)}
.footer-icons{display:flex;align-items:center;gap:10px}
.footer-icons a{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;border:1px solid var(--border);background:#131c36;color:var(--muted);transition:border-color .15s,color .15s,transform .15s}
.footer-icons a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.footer-icons svg{display:block}

/* Responsive header */
@media(max-width:640px){
  .header-right{gap:4px}
  .nav-link{font-size:.8rem;padding:.35rem .5rem}
  .nav-link.brand{font-size:.95rem}
  .nav-sep{margin:0 2px}
  .icon-btn{width:30px;height:30px}
  .icon-btn img{width:16px;height:16px}
  .lang-wrap{padding:.25rem .4rem .25rem .35rem}
  .btn{padding:.45rem .7rem;font-size:.82rem}
  .hero h1{font-size:1.5rem}
  .hero{padding:36px 0 28px}
  .tabs{gap:8px}
  .tab{padding:8px 14px;font-size:.82rem}
}