/* ============================================================
   SIES — Hoja de estilos del índice
   Los colores se controlan con las variables de :root (abajo).
   Cambia --accent para el color principal de la marca.
   ============================================================ */

:root{
  --bg:        #0E1118;
  --bg-grid:   #161B26;
  --surface:   #161A24;
  --surface-2: #1C2230;
  --line:      #262D3D;
  --ink:       #ECEEF4;
  --ink-dim:   #8A93A8;
  --ink-faint: #5A6377;
  --accent:    #2A9D96;   /* teal de marca (brillante, para UI sobre fondo oscuro) */
  --accent-2:  #5EEAD4;   /* teal claro para destellos */
  --brand:     #1C7C78;   /* teal oficial del logo SIES */
}

*{ box-sizing:border-box; margin:0; padding:0; }

body{
  background:
    linear-gradient(transparent 95%, var(--bg-grid) 95%) 0 0 / 100% 32px,
    linear-gradient(90deg, transparent 95%, var(--bg-grid) 95%) 0 0 / 32px 100%,
    var(--bg);
  color:var(--ink);
  font-family:'Inter', system-ui, sans-serif;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

.wrap{
  width:100%;
  max-width:1040px;
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Encabezado ---------- */
header.site{
  padding-top:72px;
  padding-bottom:48px;
}

.eyebrow{
  font-family:'Space Mono', monospace;
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:28px; height:1px;
  background:var(--accent);
  display:inline-block;
}

/* ---------- Logo de marca (placa de identidad) ---------- */
.brand{
  display:inline-flex;
  align-items:center;
  background:#FFFFFF;
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px 30px;
  margin:18px 0 22px;
  box-shadow:0 16px 44px rgba(0,0,0,.38);
}
.brand img{
  display:block;
  height:clamp(46px, 11vw, 66px);
  width:auto;
}

.lede{
  color:var(--ink-dim);
  font-size:17px;
  max-width:46ch;
}

/* ---------- Cuadrícula de proyectos ---------- */
.grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:18px;
  padding-bottom:56px;
}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  padding:26px 26px 22px;
  text-decoration:none;
  color:inherit;
  min-height:210px;
  overflow:hidden;
  transition:border-color .25s ease, transform .25s ease, background .25s ease;
}
.card::after{
  content:"";
  position:absolute;
  left:0; top:0;
  width:0; height:2px;
  background:var(--accent);
  transition:width .35s ease;
}
.card:hover,
.card:focus-visible{
  border-color:var(--accent);
  background:var(--surface-2);
  transform:translateY(-3px);
  outline:none;
}
.card:hover::after,
.card:focus-visible::after{ width:100%; }

.card-num{
  font-family:'Space Mono', monospace;
  font-size:13px;
  font-weight:700;
  color:var(--ink-faint);
  letter-spacing:.05em;
  transition:color .25s ease;
}
.card:hover .card-num,
.card:focus-visible .card-num{ color:var(--accent); }

.card-name{
  font-family:'Space Grotesk', sans-serif;
  font-weight:600;
  font-size:25px;
  letter-spacing:-0.01em;
  margin:14px 0 8px;
}

.card-desc{
  color:var(--ink-dim);
  font-size:14.5px;
  flex:1;
}

.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:20px;
  padding-top:16px;
  border-top:1px solid var(--line);
}

.card-path{
  font-family:'Space Mono', monospace;
  font-size:11.5px;
  color:var(--ink-faint);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.card-path .slash{ color:var(--accent-2); }

.card-go{
  flex-shrink:0;
  width:30px; height:30px;
  border-radius:50%;
  border:1px solid var(--line);
  display:grid;
  place-items:center;
  color:var(--ink-dim);
  transition:transform .25s ease, border-color .25s ease, color .25s ease;
}
.card:hover .card-go,
.card:focus-visible .card-go{
  border-color:var(--accent);
  color:var(--accent);
  transform:translate(2px,-2px);
}
.card-go svg{ width:14px; height:14px; }

/* ---------- Pie ---------- */
footer.site{
  margin-top:auto;
  border-top:1px solid var(--line);
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  padding:22px 0;
  font-family:'Space Mono', monospace;
  font-size:12px;
  color:var(--ink-faint);
}
.status{ display:flex; align-items:center; gap:8px; }
.dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--accent-2);
  box-shadow:0 0 0 3px rgba(94,234,212,.15);
}

/* ---------- Aparición secuencial ---------- */
@keyframes rise{
  from{ opacity:0; transform:translateY(14px); }
  to{ opacity:1; transform:translateY(0); }
}
.reveal{ animation:rise .55s cubic-bezier(.2,.7,.3,1) backwards; }
.grid .card:nth-child(1){ animation-delay:.06s; }
.grid .card:nth-child(2){ animation-delay:.13s; }
.grid .card:nth-child(3){ animation-delay:.20s; }
.grid .card:nth-child(4){ animation-delay:.27s; }

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width:640px){
  header.site{ padding-top:48px; padding-bottom:32px; }
  .grid{ grid-template-columns:1fr; }
  .card{ min-height:0; }
}