:root{
  --yellow:#ffd015;
  --black:#000000;
  --white:#ffffff;
  --science:#6b99a6;
  --innov:#82e5b8;
  --morado:#5c2959;
  --bg:#f3f4f6;
  --card: rgba(229, 235, 238, 1.0);
  --card2: rgba(107, 153, 166, 0.1);
  --fg:#111827;
  --muted:#4b5563;
  --border:rgba(17,24,39,.10);
  --shadow:0 10px 25px rgba(0,0,0,.06);
  --radius:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);
  color:var(--fg);
  font-family:"Programme","Inter",system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Arial,sans-serif;
  line-height:1.55;
}
.container{max-width:1160px;margin:0 auto;padding:28px}
header{padding:44px 0 18px}
.kicker{
  font-family:"DM Mono",ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;
  font-weight:500;
  letter-spacing:.06em;
  text-transform:uppercase;
  display:inline-flex;
  gap:.55rem;
  align-items:center;
  color:var(--black);
  background:linear-gradient(90deg,var(--yellow),rgba(255,208,21,.25));
  border:1px solid rgba(0,0,0,.12);
  padding:6px 10px;
  border-radius:999px;
}
.kicker .dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--science);
  box-shadow:0 0 0 3px rgba(107,153,166,.18);
}
h1{
  font-size:clamp(2.2rem,4.5vw,3.6rem);
  line-height:1.05;
  margin:.55rem 0 .4rem;
  color:var(--black);
}
.sub{
  max-width:78ch;
  color:var(--muted);
  font-size:1.08rem;
  margin:0 0 18px;
}
.controls{
  display:grid;
  grid-template-columns: 1fr 260px;
  gap:12px;
  margin:18px 0 10px;
}
@media(max-width:900px){ .controls{grid-template-columns:1fr 1fr} }
@media(max-width:620px){ .controls{grid-template-columns:1fr} }

input[type="search"], select{
  width:100%;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.75);
  outline:none;
  font-size:1rem;
}
input[type="search"]:focus, select:focus{
  border-color:rgba(255,208,21,.85);
  box-shadow:0 0 0 4px rgba(255,208,21,.25);
}
.count{
  color:var(--muted);
  margin:6px 0 0;
  font-family:"DM Mono",ui-monospace,monospace;
  font-size:.92rem;
}
.grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:16px;
  margin-top:12px;
}
@media(max-width:980px){ .grid{grid-template-columns:1fr} }

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:grid;
  grid-template-columns: 170px 1fr;
  min-height:200px;
}
@media(max-width:520px){ .card{grid-template-columns:1fr} }

.cover{
  background:
    radial-gradient(120px 120px at 30% 25%, rgba(255,208,21,.45), transparent 60%),
    radial-gradient(120px 120px at 70% 75%, rgba(130,229,184,.35), transparent 60%),
    radial-gradient(130px 130px at 70% 25%, rgba(107,153,166,.35), transparent 60%),
    #6b99a6;
  display:flex;align-items:center;justify-content:center;
  padding:10px;
}
.cover img{
  width:100%;
  height:auto;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 10px 22px rgba(0,0,0,.25);
  background:#0b0f16;
}

.content{padding:16px 16px 14px;display:flex;flex-direction:column;gap:10px}
h2{
  margin:0;
  font-size:1.3rem;
  line-height:1.2;
  color:var(--science)}
.badges{display:flex;flex-wrap:wrap;gap:8px}
.badge{
  font-family:"DM Mono",ui-monospace,monospace;
  font-weight:500;
  font-size:.78rem;
  padding:4px 10px;
  border-radius:999px;
  border:1px solid var(--border);
  background:#f9fafb;
  color:var(--black);
}
.badge.yellow{ background:rgba(255,208,21,.25); border-color:rgba(255,208,21,.55) }
.badge.science{ background:rgba(107,153,166,.18); border-color:rgba(107,153,166,.45) }
.badge.innov{ background:rgba(130,229,184,.18); border-color:rgba(130,229,184,.45) }
.badge.morado{ background:rgba(92,41,89,.18); border-color:rgba(92,41,89,.45) }

.desc{color:var(--muted);margin:0;font-size:.98rem}

.actions{margin-top:auto;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border-radius:999px;
  border:1px solid var(--border);
  background:#fff;
  font-family:"DM Mono",ui-monospace,monospace;
  font-weight:500;
  font-size:.86rem;
  cursor:pointer;
  text-decoration:none;
  transition:transform .08s ease, box-shadow .08s ease;
}
.pill:hover{transform:translateY(-1px);box-shadow:0 10px 20px rgba(0,0,0,.08)}
.pill:active{transform:translateY(0)}
.pill.pdf{border-color:rgba(255,208,21,.65);background:rgba(255,208,21,.20)}
.pill.epub{border-color:rgba(130,229,184,.70);background:rgba(130,229,184,.18)}
.pill span.icon{
  display:inline-flex;width:18px;height:18px;border-radius:6px;
  align-items:center;justify-content:center;
  background:rgba(0,0,0,.08);
}
.empty{
  text-align:center;color:var(--muted);padding:34px 0;
  font-family:"DM Mono",ui-monospace,monospace;
}
footer{margin:12px 0 10px;color:var(--muted);font-size:1.02rem}

footer
.line{height:2px;background:rgba(0,0,0,.10);border:0;margin:22px 0}
.sr-only{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.highlight{
  color: var(--science);
  font-weight: 700;
}

.footer-content{
  display:flex;
  align-items:center;
  gap:18px;
}

.footer-logo{
  width:150px;       /* ajusta tamaño */
  height:auto;
}

.footer-content p{
  margin:0;
}

@media(max-width:600px){
  .footer-content{
    flex-direction:column;
    align-items:flex-start;
  }

  .footer-logo{
    width:50px;
  }
}

/* ─────────────────────────────
   Top-right menu (Hamburger)
   ───────────────────────────── */
.menu-container{
  position:fixed;
  top:14px;
  right:14px;
  z-index:999;
}

.menu-button{
  width:44px;
  height:44px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;

  /* Look */
  background: rgba(255,255,255,.75);
  border:1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--black);

  /* Typography */
  font-size:22px;
  user-select:none;
}

.menu-button:hover{
  border-color: rgba(255,208,21,.75);
  box-shadow: 0 12px 26px rgba(0,0,0,.10);
}

.menu-dropdown{
  display:none;
  position:absolute;
  right:0;
  margin-top:10px;
  width:min(380px, calc(100vw - 28px));

  background: var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow: 0 18px 40px rgba(0,0,0,.14);
  padding:14px 14px 12px;
}

.menu-dropdown.show{ display:block; }

.menu-dropdown hr{
  border:0;
  height:1px;
  background: rgba(0,0,0,.10);
  margin:10px 0;
}

.menu-title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}

.menu-title strong{
  color: var(--black);
  font-size:1.5rem;
}

.menu-desc{
  color: var(--muted);
  font-size:.95rem;
  margin:0;
}

.menu-row{
  margin:10px 0 6px;
  font-family:"DM Mono", ui-monospace, monospace;
  font-size:.92rem;
  color: var(--black);
}

.menu-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-top:8px;

  font-family:"DM Mono", ui-monospace, monospace;
  font-weight:500;
  font-size:.92rem;

  padding:10px 12px;
  border-radius:12px;

  background: rgba(107,153,166,.14);
  border:1px solid rgba(107,153,166,.35);
  color: var(--black);
  text-decoration:none;
}

.menu-link:hover{
  text-decoration:none;
  border-color: rgba(255,208,21,.75);
  background: rgba(255,208,21,.22);
}