:root{
  /* Estilo “producto” claro, tipo Vercel/v0 */
  --bg: #fafafa;
  --fg: #0a0a0a;
  --muted: #525252;

  --card: #ffffff;
  --border: rgba(0,0,0,.10);
  --border-strong: rgba(0,0,0,.14);

  --shadow: 0 1px 0 rgba(0,0,0,.06), 0 12px 30px rgba(0,0,0,.08);

  --blue: #2563eb;
  --blue-weak: rgba(37,99,235,.12);

  --purple: #7c3aed;
  --purple-weak: rgba(124,58,237,.12);

  --green: #16a34a;
  --green-weak: rgba(22,163,74,.12);

  --radius: 14px;
  --maxw: 1100px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a{ color: inherit; text-decoration: none; }
strong{ font-weight: 700; }

.container{
  width: min(var(--maxw), calc(100% - 40px));
  margin: 0 auto;
}

/* Fondo suave */
.bg{
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}
.blob{
  position: absolute;
  width: 680px;
  height: 680px;
  filter: blur(50px);
  opacity: .55;
  border-radius: 999px;
}
.blob-a{
  top: -260px;
  left: -260px;
  background: radial-gradient(circle at 30% 30%, rgba(37,99,235,.22), transparent 60%),
              radial-gradient(circle at 70% 50%, rgba(124,58,237,.16), transparent 60%);
}
.blob-b{
  top: -240px;
  right: -260px;
  background: radial-gradient(circle at 30% 30%, rgba(22,163,74,.14), transparent 60%),
              radial-gradient(circle at 70% 50%, rgba(37,99,235,.14), transparent 60%);
}
.grid-overlay{
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(0,0,0,.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,0,0,.035) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(ellipse at 50% 0%, rgba(0,0,0,.55), transparent 60%);
  opacity: .55;
}

/* Header */
.header{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(250,250,250,.75);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
}

.logo{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 220px;
}
.logo-mark{
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: radial-gradient(85% 85% at 30% 30%, rgba(37,99,235,.95), rgba(124,58,237,.75));
  box-shadow: 0 10px 20px rgba(37,99,235,.20);
}
.logo-text{
  font-weight: 700;
  letter-spacing: -0.2px;
}

.nav{
  display: flex;
  gap: 14px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.7);
  border-radius: 999px;
}

/* dropdown built with details/summary inside nav */
.nav details {
  position: relative;
}
.nav summary {
  list-style: none;
  cursor: pointer;
  padding: 8px 10px;
  border-radius: 999px;
  color: var(--muted);
  transition: background .15s ease, color .15s ease;
}
.nav summary:hover {
  color: var(--fg);
  background: rgba(0,0,0,.04);
}

/* hide default marker and add a subtle caret */
.nav summary::-webkit-details-marker{ display: none; }
.nav summary::after{
  content: '▾';
  display: inline-block;
  margin-left: 8px;
  font-size: 0.8em;
  opacity: 0.7;
}
.nav details > a {
  /* hidden by default; will be shown inside an absolute panel when details is open */
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  white-space: nowrap;
}
.nav details[open] summary {
  background: rgba(0,0,0,.04);
}

/* dropdown panel: position links absolutely so nav height doesn't change */
.nav details .dropdown-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: rgba(255,255,255,0.98);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0,0,0,.08);
  padding: 8px;
  z-index: 1200;
  opacity: 0;
  transform: translateY(-6px);
  visibility: hidden;
  transition: opacity .22s ease, transform .22s ease, visibility .22s;
}
.nav details[open] .dropdown-panel {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}
.nav details .dropdown-panel a {
  display: block;
  padding: 8px 10px;
  margin: 4px 0;
  border-radius: 8px;
  color: var(--muted);
  transition: background .12s ease, color .12s ease;
}
.nav details .dropdown-panel a:hover{
  background: rgba(0,0,0,.04);
  color: var(--fg);
}

.nav summary.is-active {
  background: var(--blue-weak);
  color: var(--fg);
}
.nav a{
  font-size: 14px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}
.nav a:hover{
  color: var(--fg);
  background: rgba(0,0,0,.04);
}

.header-actions{
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

/* Botones */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 14px;
  transition: transform .12s ease, background .15s ease, border-color .15s ease, box-shadow .15s ease;
  user-select: none;
}
.btn:hover{ transform: translateY(-1px); }
.btn:active{ transform: translateY(0); }

.btn-ghost{
  background: rgba(255,255,255,.7);
}
.btn-ghost:hover{
  border-color: var(--border-strong);
  background: rgba(0,0,0,.03);
}

.btn-solid{
  background: #0a0a0a;
  color: #fff;
  border-color: rgba(0,0,0,.25);
  box-shadow: 0 10px 24px rgba(0,0,0,.16);
}
.btn-solid:hover{
  background: #111;
  border-color: rgba(0,0,0,.35);
}

.btn-small{
  padding: 9px 12px;
  font-size: 13px;
}

/* Hero */
.hero{
  padding: 54px 0 18px;
}
.hero-grid{
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 18px;
  align-items: start;
}

.kicker{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.pill{
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.75);
  font-weight: 600;
  font-size: 13px;
}
.subpill{
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}
.dot{
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: rgba(0,0,0,.35);
}

.h1{
  margin: 0;
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.9px;
}
.lead{
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
  max-width: 62ch;
}

.hero-cta{
  margin-top: 18px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.stats{
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 10px;
}
.stat{
  background: rgba(255,255,255,.75);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}
.stat-k{
  margin: 0;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
}
.stat-v{
  margin: 6px 0 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.1px;
}

/* Cards */
.card{
  background: rgba(255,255,255,.88);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}
.card-hover{
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.card-hover:hover{
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 1px 0 rgba(0,0,0,.06), 0 16px 42px rgba(0,0,0,.10);
}

.card-head{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.card-foot{
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.h2{
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.4px;
}
.h3{
  margin: 0;
  font-size: 16px;
  letter-spacing: -0.2px;
}
.muted{
  color: var(--muted);
  line-height: 1.65;
}
.eyebrow{
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(0,0,0,.55);
}
.section{
  padding: 44px 0;
}
.section-soft{
  background: linear-gradient(to bottom, rgba(0,0,0,.02), transparent 60%);
  border-top: 1px solid rgba(0,0,0,.04);
  border-bottom: 1px solid rgba(0,0,0,.04);
}
.section-head{
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
  max-width: 880px;
}

.grid-2{
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
}
.grid-3{
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 12px;
}

/* Resumen */
.list{
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.list li{
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 10px;
  align-items: start;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}
.list strong{ color: var(--fg); }
.bullet{
  width: 8px;
  height: 8px;
  border-radius: 999px;
  margin-top: 6px;
  background: radial-gradient(circle at 30% 30%, rgba(37,99,235,.95), rgba(124,58,237,.75));
  box-shadow: 0 0 0 4px rgba(37,99,235,.10);
}

/* Chips */
.chip{
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.03);
  font-weight: 700;
  font-size: 12px;
  color: rgba(0,0,0,.72);
}
.chip-blue{
  background: var(--blue-weak);
  border-color: rgba(37,99,235,.25);
  color: rgba(37,99,235,.95);
}
.chip-purple{
  background: var(--purple-weak);
  border-color: rgba(124,58,237,.25);
  color: rgba(124,58,237,.95);
}
.chip-green{
  background: var(--green-weak);
  border-color: rgba(22,163,74,.25);
  color: rgba(22,163,74,.95);
}

/* Bloques */
.ticks{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.ticks li{ margin: 6px 0; }

.callout{
  margin-top: 12px;
  border: 1px solid rgba(37,99,235,.20);
  background: linear-gradient(180deg, rgba(37,99,235,.06), rgba(124,58,237,.05));
  border-radius: 12px;
  padding: 12px;
}
.callout p{
  margin: 0;
  line-height: 1.55;
}
.callout-actions{
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.stack{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  color: var(--muted);
}
.note{
  margin-top: 12px;
  border: 1px dashed rgba(0,0,0,.18);
  border-radius: 12px;
  padding: 12px;
  background: rgba(0,0,0,.02);
}

/* Tags */
.tags{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag{
  display: inline-flex;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.85);
  font-weight: 600;
  font-size: 13px;
  color: rgba(0,0,0,.82);
  transition: background .15s ease, border-color .15s ease, transform .12s ease;
}
.tag:hover{
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: rgba(0,0,0,.03);
}

/* Checklist */
.checklist{
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.check{
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  align-items: start;
  padding: 10px 10px;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.08);
  background: rgba(0,0,0,.02);
}
.check input{
  margin-top: 3px;
  accent-color: var(--blue);
}
.check span{
  color: var(--muted);
  line-height: 1.55;
}
.check input:checked + span{
  color: rgba(0,0,0,.85);
}

/* Prácticas */
.card-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}
.mini{
  margin: 10px 0 8px;
  padding-left: 18px;
  color: var(--muted);
}
.mini li{ margin: 6px 0; }

.link{
  color: rgba(37,99,235,.95);
  font-weight: 700;
  font-size: 13px;
}
.link:hover{ text-decoration: underline; }

/* Miembros */
.member{
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 14px;
  align-items: start;
}
.avatar{
  width: 80px;
  height: 80px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: radial-gradient(70% 70% at 30% 30%, rgba(37,99,235,.20), rgba(124,58,237,.14));
  box-shadow: 0 10px 22px rgba(37,99,235,.10);
  position: relative;
  overflow: hidden;
}
.avatar::after{
  content: attr(data-initials);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: rgba(0,0,0,.70);
  letter-spacing: .02em;
}
.avatar img{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  /* Si pones src real, la foto tapa las iniciales */
  background: #fff;
}
.member-body .h3{ margin-top: 2px; }
.links{
  margin-top: 10px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer{
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .nav{ display: none; } /* si quieres, lo convierto a menú móvil sin JS (details/summary) */
  .grid-3{ grid-template-columns: 1fr; }
  .grid-2{ grid-template-columns: 1fr; }
  .stats{ grid-template-columns: 1fr; }
  .logo{ min-width: auto; }
}

/* Header “scrolled” */
.header.is-scrolled{
  border-bottom-color: rgba(0,0,0,.14);
  box-shadow: 0 1px 0 rgba(0,0,0,.05), 0 10px 30px rgba(0,0,0,.06);
}

/* Nav activo */
.nav a.is-active{
  color: var(--fg);
  background: rgba(0,0,0,.04);
  border: 1px solid rgba(0,0,0,.06);
}

/* Reveal animation */
.reveal{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal.in{
  opacity: 1;
  transform: translateY(0);
}

/* Etiquetas seleccionadas */
.tag.is-selected{
  border-color: rgba(0,0,0,.18);
  background: rgba(0,0,0,.04);
}

/* Filtro de prácticas */
#practica .card.is-dim{
  opacity: .45;
  filter: grayscale(.15);
}
#practica .card.is-hit{
  outline: 2px solid rgba(37,99,235,.25);
  outline-offset: 2px;
}

/* Status bar etiquetas */
.tags-status{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 10px 0 12px;
}

.logo-img {
  height: 32px;
  width: auto;
  display: block;
}