/* ============================================================
   site.css — Escaparate público · Libros Soy Español
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:      #0d0e10;
  --panel:   #16181c;
  --panel2:  #1c1f24;
  --border:  #262a31;
  --gold:    #d4a13d;
  --gold-glow: rgba(212,161,61,0.18);
  --text:    #ece7da;
  --text2:   rgba(236,231,218,0.62);
  --text3:   rgba(236,231,218,0.38);
  --r:       16px;
}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text);
  font-family:'Inter',system-ui,sans-serif;
  overflow-x:hidden;
}
a{color:inherit}
img{display:block;max-width:100%}

.bg-layer{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, var(--gold-glow) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 100% 100%, rgba(212,161,61,0.08) 0%, transparent 55%);
  opacity:.8;
}

/* NAV */
nav{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 40px;
  background:rgba(13,14,16,0.88);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.logo{display:flex;align-items:center;gap:10px;font-family:'Playfair Display',Georgia,serif;font-weight:700;letter-spacing:.02em;font-size:1.15rem;text-decoration:none;color:var(--text);}
.logo-icon{width:36px;height:36px;border-radius:50%;background:var(--panel2);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:17px;overflow:hidden;flex-shrink:0;}
.logo-icon img{width:100%;height:100%;object-fit:cover;border-radius:50%;}
.logo em{color:var(--gold);font-style:normal;}
.nav-sub{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--text3);}

/* NAV + SECCIONES fijos arriba al hacer scroll */
.top-sticky{
  position:sticky;top:0;z-index:25;
  background:rgba(13,14,16,0.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.top-sticky nav{position:static;background:transparent;backdrop-filter:none;border-bottom:none;}

/* SECCIONES */
.catbar{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;justify-content:center;gap:8px;
  padding:16px 40px 18px;
}
.cat-btn{
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 18px;border-radius:999px;
  border:1px solid var(--border);background:var(--panel);
  color:var(--text2);font-size:.82rem;font-weight:600;letter-spacing:.02em;
  text-decoration:none;transition:all .2s;
}
.cat-btn:hover{border-color:var(--gold);color:var(--text);}
.cat-btn.active{background:var(--gold);border-color:var(--gold);color:#1a1305;}
@media(max-width:700px){.catbar{padding:12px 16px 14px;gap:6px;}}

/* HERO */
.hero{position:relative;z-index:1;padding:90px 40px 60px;text-align:center;max-width:820px;margin:0 auto;}
.hero-eyebrow{
  font-size:.75rem;letter-spacing:.28em;text-transform:uppercase;color:var(--gold);
  display:inline-flex;align-items:center;gap:12px;margin-bottom:20px;
}
.hero-eyebrow::before,.hero-eyebrow::after{content:'';width:24px;height:1px;background:var(--gold);}
.hero h1{
  font-family:'Playfair Display',Georgia,serif;font-weight:700;
  font-size:clamp(2.1rem,5vw,3.4rem);line-height:1.1;margin-bottom:20px;
}
.hero h1 em{color:var(--gold);font-style:normal;text-shadow:0 0 30px var(--gold-glow);}
.hero p{font-size:1.05rem;color:var(--text2);line-height:1.7;max-width:560px;margin:0 auto;}

/* GRID */
.grid-wrap{position:relative;z-index:1;max-width:1240px;margin:0 auto;padding:20px 40px 100px;}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:26px;}
.card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--r);
  overflow:hidden;transition:transform .3s,border-color .3s,box-shadow .3s;
}
.card:hover{transform:translateY(-4px);border-color:rgba(212,161,61,.4);box-shadow:0 16px 40px rgba(0,0,0,.35);}
.card-media{position:relative;aspect-ratio:2/3;background:var(--panel2);cursor:pointer;overflow:hidden;display:block;text-decoration:none;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.card-media:hover img{transform:scale(1.04);}
.card-media iframe{width:100%;height:100%;border:0;}
.media-placeholder{
  width:100%;height:100%;display:flex;align-items:center;justify-content:center;
  font-size:2.2rem;background:var(--panel2);color:var(--text3);
}
.play-btn{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.45));
}
.play-btn span{
  width:56px;height:56px;border-radius:50%;background:rgba(13,14,16,.75);
  border:1.5px solid var(--gold);display:flex;align-items:center;justify-content:center;
  color:var(--gold);font-size:20px;transition:all .25s;
}
.card-media:hover .play-btn span{background:var(--gold);color:#1a1305;box-shadow:0 0 30px var(--gold-glow);}
.featured-tag{
  position:absolute;top:12px;left:12px;background:var(--gold);color:#1a1305;
  font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  padding:.3rem .7rem;border-radius:99px;z-index:2;
}
.cat-tag{
  position:absolute;top:12px;right:12px;background:rgba(13,14,16,.72);
  color:var(--text);backdrop-filter:blur(4px);
  font-size:.68rem;font-weight:600;letter-spacing:.02em;
  padding:.3rem .65rem;border-radius:99px;z-index:2;
  border:1px solid rgba(255,255,255,.12);
}
.card-body{padding:18px 20px 22px;}
.card-title{font-family:'Playfair Display',Georgia,serif;font-weight:700;font-size:1.08rem;margin-bottom:4px;line-height:1.3;}
.card-title a{text-decoration:none;color:var(--text);}
.card-title a:hover{color:var(--gold);}
.card-autor{font-size:.78rem;color:var(--gold);margin-bottom:10px;}
.card-desc{font-size:.9rem;color:var(--text2);line-height:1.6;margin-bottom:12px;}
.card-more{font-size:.78rem;color:var(--gold);text-decoration:none;letter-spacing:.02em;}

.empty-state{text-align:center;padding:80px 20px;color:var(--text3);}
.empty-state span{font-size:2.4rem;display:block;margin-bottom:1rem;}

/* DETALLE */
.detalle-wrap{position:relative;z-index:1;max-width:880px;margin:0 auto;padding:50px 30px 100px;}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;color:var(--text3);text-decoration:none;margin-bottom:26px;transition:color .2s;}
.back-link:hover{color:var(--gold);}
.detalle-video{aspect-ratio:16/9;border-radius:var(--r);overflow:hidden;background:var(--panel2);border:1px solid var(--border);margin-bottom:28px;}
.detalle-video iframe{width:100%;height:100%;border:0;}
.detalle-video.vertical{aspect-ratio:9/16;max-width:420px;margin-left:auto;margin-right:auto;}
.detalle-cover-solo{width:220px;aspect-ratio:2/3;border-radius:var(--r);overflow:hidden;background:var(--panel2);border:1px solid var(--border);margin-bottom:28px;}
.detalle-cover-solo img{width:100%;height:100%;object-fit:cover;}
.detalle-titulo{font-family:'Playfair Display',Georgia,serif;font-weight:700;font-size:clamp(1.7rem,3.5vw,2.5rem);line-height:1.2;margin-bottom:10px;}
.detalle-autor{font-size:1rem;color:var(--gold);margin-bottom:14px;}
.detalle-desc{font-size:1.05rem;color:var(--text2);font-style:italic;line-height:1.7;margin-bottom:20px;}
.btn-libro{
  display:inline-flex;align-items:center;gap:8px;width:fit-content;
  background:var(--gold);color:#1a1305;font-weight:700;font-size:.92rem;
  padding:.85rem 1.5rem;border-radius:999px;text-decoration:none;
  margin-bottom:30px;transition:filter .2s,box-shadow .2s;
}
.btn-libro:hover{filter:brightness(1.08);box-shadow:0 0 30px var(--gold-glow);}
.detalle-texto{font-size:1rem;color:var(--text2);line-height:1.85;white-space:pre-line;}
.detalle-texto p{margin-bottom:1.1em;}

.card-desc a,.detalle-desc a,.detalle-texto a{color:var(--gold);text-decoration:underline;text-decoration-color:rgba(212,161,61,.4);text-underline-offset:2px;transition:text-decoration-color .2s;}
.card-desc a:hover,.detalle-desc a:hover,.detalle-texto a:hover{text-decoration-color:var(--gold);}

.rel-wrap{max-width:1240px;margin:0 auto;padding:0 40px 100px;}
.rel-head{font-size:.78rem;letter-spacing:.2em;text-transform:uppercase;color:var(--text3);margin-bottom:24px;text-align:center;}

/* FOOTER */
footer{
  position:relative;z-index:1;padding:34px 40px;border-top:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;
}
.f-copy{font-size:.78rem;color:var(--text3);}

@media(max-width:700px){
  nav{padding:14px 20px;}
  .hero{padding:60px 20px 40px;}
  .grid-wrap{padding:16px 20px 70px;}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));}
  footer{padding:26px 20px;flex-direction:column;text-align:center;}
  .detalle-wrap{padding:36px 18px 70px;}
  .detalle-cover-solo{width:150px;}
  .rel-wrap{padding:0 18px 70px;}
}