:root{
  --bg:#0c0e13;--bg2:#11141c;--panel:#151925;
  --gold:#c9a24b;--gold-bright:#e8c878;--parch:#e9dfc8;--muted:#9a927e;
  --serif:'Cormorant Garamond',Georgia,serif;--body:'EB Garamond',Georgia,serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--parch);font-family:var(--body);font-size:19px;line-height:1.65}
a{color:var(--gold-bright);text-decoration:none;transition:color .2s}
a:hover{color:#fff}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
/* NAV */
nav{position:sticky;top:0;z-index:50;background:rgba(12,14,19,.92);backdrop-filter:blur(8px);border-bottom:1px solid #232838}
nav .wrap{display:flex;align-items:center;justify-content:space-between;min-height:64px;flex-wrap:wrap}
.brand{font-family:var(--serif);font-weight:600;letter-spacing:.3em;font-size:1.05rem;color:var(--gold-bright);white-space:nowrap}
nav ul{display:flex;gap:24px;list-style:none;align-items:center;flex-wrap:wrap}
nav ul a{font-size:.84rem;letter-spacing:.13em;text-transform:uppercase;color:var(--parch);white-space:nowrap}
nav ul a:hover,nav ul a.active{color:var(--gold-bright)}
.lang{border:1px solid var(--gold);padding:4px 12px;border-radius:2px;font-size:.8rem;letter-spacing:.1em}
/* menú hamburguesa (sin JS: checkbox) */
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.nav-burger{display:none;cursor:pointer;padding:8px;margin:-8px;border:0;background:none}
.nav-burger span{display:block;width:26px;height:2px;background:var(--gold-bright);margin:5px 0;transition:.3s}
/* HERO */
.hero{position:relative;padding:110px 0 90px;background:radial-gradient(ellipse 70% 60% at 50% 20%,#1a2030 0%,var(--bg) 70%);text-align:center;overflow:hidden}
.hero .kicker{letter-spacing:.5em;font-size:.85rem;color:var(--gold);text-transform:uppercase;margin-bottom:22px}
.hero h1{font-family:var(--serif);font-weight:600;font-size:clamp(2.6rem,7vw,4.6rem);letter-spacing:.18em;color:#f4ecd9}
.hero .sub{font-style:italic;font-size:clamp(1.15rem,3vw,1.5rem);color:var(--gold-bright);margin-top:14px}
.hero p.lead{max-width:640px;margin:30px auto 0;color:var(--muted);font-size:1.06rem}
.orn{display:flex;align-items:center;gap:14px;justify-content:center;margin:34px 0}
.orn::before,.orn::after{content:"";width:90px;height:1px;background:var(--gold)}
.orn span{width:9px;height:9px;background:var(--gold);transform:rotate(45deg)}
/* BOOK CARDS */
.books{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:44px;padding:70px 0}
.card{background:var(--panel);border:1px solid #242a3c;padding:38px 34px;text-align:center;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-6px);border-color:var(--gold)}
.card img{width:200px;box-shadow:0 18px 44px rgba(0,0,0,.55);margin-bottom:26px}
.card .num{letter-spacing:.4em;font-size:.75rem;color:var(--gold);text-transform:uppercase}
.card h3{font-family:var(--serif);font-size:1.55rem;margin:10px 0 6px;color:#f4ecd9}
.card .tag{font-style:italic;color:var(--gold-bright);font-size:.98rem;margin-bottom:16px}
.card p{color:var(--muted);font-size:.97rem}
.btn{display:inline-block;margin-top:22px;border:1px solid var(--gold);color:var(--gold-bright);padding:11px 30px;letter-spacing:.16em;font-size:.82rem;text-transform:uppercase;transition:all .2s}
.btn:hover{background:var(--gold);color:#0c0e13}
.btn.solid{background:var(--gold);color:#0c0e13}
.btn.solid:hover{background:var(--gold-bright)}
/* BOOK PAGE */
.bookhero{display:grid;grid-template-columns:300px 1fr;gap:60px;align-items:start;padding:80px 0 60px}
.bookhero img{width:100%;box-shadow:0 24px 60px rgba(0,0,0,.6)}
.bookhero .num{letter-spacing:.4em;font-size:.8rem;color:var(--gold);text-transform:uppercase}
.bookhero h1{font-family:var(--serif);font-size:clamp(2rem,4.5vw,3rem);color:#f4ecd9;margin:12px 0 4px;line-height:1.15}
.bookhero .stitle{font-style:italic;font-size:1.35rem;color:var(--gold-bright);margin-bottom:26px}
.bookhero .lema{border-left:2px solid var(--gold);padding:6px 0 6px 20px;margin:26px 0;font-size:1.12rem;letter-spacing:.08em;color:var(--gold-bright)}
.bookhero p{margin-bottom:16px;color:var(--parch)}
.buy{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.meta{margin-top:34px;padding-top:22px;border-top:1px solid #242a3c;color:var(--muted);font-size:.9rem;line-height:1.9}
/* SECTIONS */
.section{padding:70px 0;border-top:1px solid #1b2030}
.section h2{font-family:var(--serif);font-size:2rem;letter-spacing:.1em;color:#f4ecd9;text-align:center;margin-bottom:14px}
.section .sub2{text-align:center;color:var(--muted);max-width:620px;margin:0 auto 44px}
.prose{max-width:720px;margin:0 auto}
.prose p{margin-bottom:18px}
.prose .firma{font-family:var(--serif);letter-spacing:.25em;color:var(--gold);text-align:center;margin-top:36px}
/* AUTHOR */
.autor-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:60px;align-items:start;padding:80px 0}
.autor-grid .foto{background:var(--panel);border:1px solid #242a3c;aspect-ratio:4/5;display:flex;align-items:center;justify-content:center;color:var(--muted);font-style:italic}
/* CONTACT */
.contact-box{max-width:560px;margin:70px auto;background:var(--panel);border:1px solid #242a3c;padding:50px;text-align:center}
.contact-box .mail{font-family:var(--serif);font-size:1.5rem;letter-spacing:.06em;display:block;margin:22px 0}
/* FOOTER */
footer{border-top:1px solid #1b2030;padding:46px 0;text-align:center;color:var(--muted);font-size:.85rem}
footer .brand{display:block;margin-bottom:12px}
footer nav2 a{margin:0 12px}
/* ===== RESPONSIVE ===== */
/* Tablet / pantallas medianas */
@media(max-width:900px){
  body{font-size:18px}
  .bookhero{grid-template-columns:240px 1fr;gap:40px}
  .autor-grid{gap:40px}
}
/* Menú móvil: por debajo de 780px se colapsa a hamburguesa */
@media(max-width:780px){
  body{font-size:17px}
  nav .wrap{min-height:60px}
  .nav-burger{display:block}
  /* la lista se oculta y pasa a menú desplegable a pantalla completa del ancho */
  nav ul{
    display:none;flex-direction:column;align-items:flex-start;gap:0;
    position:absolute;top:60px;left:0;right:0;
    background:#0e1119;border-bottom:1px solid #232838;
    padding:8px 0;box-shadow:0 12px 30px rgba(0,0,0,.5)
  }
  .nav-toggle:checked ~ ul{display:flex}
  nav ul li{width:100%}
  nav ul li a{display:block;width:100%;padding:14px 24px;font-size:.95rem;border-bottom:1px solid #1a1e2a}
  .lang{display:inline-block;margin:14px 24px;border:1px solid var(--gold)}
  /* animar el icono a X cuando está abierto */
  .nav-toggle:checked ~ .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked ~ .nav-burger span:nth-child(2){opacity:0}
  .nav-toggle:checked ~ .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  /* contenido */
  .hero{padding:70px 0 56px}
  .bookhero{grid-template-columns:1fr;gap:30px;padding:50px 0 40px}
  .bookhero img{max-width:230px;margin:0 auto;display:block}
  .bookhero h1{text-align:center}.bookhero .num,.bookhero .stitle{text-align:center}
  .autor-grid{grid-template-columns:1fr;gap:30px;padding:50px 0}
  .autor-grid .foto{max-width:280px;margin:0 auto}
  .books{gap:32px;padding:50px 0}
  .section{padding:52px 0}
  .contact-box{margin:50px auto;padding:36px 28px}
  .buy{justify-content:center}
}
/* Móviles pequeños */
@media(max-width:400px){
  body{font-size:16px}
  .wrap{padding:0 18px}
  .brand{letter-spacing:.22em;font-size:.98rem}
  .hero h1{letter-spacing:.12em}
  .card{padding:30px 22px}
  .contact-box .mail{font-size:1.2rem;word-break:break-all}
}