/* ═══════════════════════════════════════════════════════
   Astral · Biblioteca esotérica — design system
   ═══════════════════════════════════════════════════════ */

:root {
  /* Paleta celestial */
  --bg-0:      #05030f;        /* negro azulado profundo */
  --bg-1:      #0b0820;
  --bg-2:      #120c2e;
  --surface:   rgba(20, 14, 48, 0.66);
  --surface-2: rgba(30, 22, 66, 0.55);
  --border:    rgba(167, 139, 250, 0.22);
  --border-hi: rgba(212, 175, 55, 0.55);

  --violet:    #a78bfa;
  --violet-2:  #7c5cff;
  --gold:      #e8c252;
  --gold-2:    #d4af37;
  --cyan:      #67e8f9;
  --magenta:   #f0a6ca;
  --text:      #e7e1ff;
  --muted:     #9a92c8;

  --radius:    14px;
  --radius-lg: 22px;
  --maxw:      1180px;

  --font-display: 'Cinzel', 'Times New Roman', serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  --shadow:    0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -20px rgba(0,0,0,.8);
  --glow:      0 0 40px -6px rgba(167,139,250,.45);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(124,92,255,.18), transparent 60%),
    radial-gradient(900px 600px at 0% 110%, rgba(212,175,55,.10), transparent 55%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 40%, var(--bg-2));
  background-attachment: fixed;
  line-height: 1.7;
  font-size: 1rem;
  min-height: 100vh;
  overflow-x: hidden;
}

#starfield {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.sigil { color: var(--gold); font-size: .92em; }

/* ═══ Header ═══ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem clamp(1rem, 4vw, 2.6rem);
  backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(5,3,15,.82), rgba(5,3,15,.45));
  border-bottom: 1px solid var(--border);
}
.brand { display: inline-flex; align-items: center; gap: .7rem; }
.brand-mark {
  font-size: 1.7rem; color: var(--gold);
  text-shadow: 0 0 18px rgba(212,175,55,.7);
  animation: floaty 6s ease-in-out infinite;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong {
  font-family: var(--font-display); font-weight: 900;
  letter-spacing: 2px; font-size: 1.15rem;
}
.brand-text em { font-style: normal; font-size: .68rem; letter-spacing: 3px; text-transform: uppercase; color: var(--muted); }

.site-nav { display: flex; gap: 1.6rem; }
.site-nav a {
  font-size: .82rem; letter-spacing: 1px; text-transform: uppercase;
  color: var(--muted); position: relative; padding: .3rem 0;
  transition: color .25s;
}
.site-nav a::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: linear-gradient(90deg, var(--gold), var(--violet));
  transition: width .3s ease;
}
.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after { width: 100%; }

@keyframes floaty { 0%,100%{transform:translateY(0) rotate(0)} 50%{transform:translateY(-3px) rotate(4deg)} }

/* ═══ Hero ═══ */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3rem, 9vw, 7rem) 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
  gap: 2rem;
}
.hero-inner { max-width: 620px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-mono); font-size: .76rem; letter-spacing: 3px;
  text-transform: uppercase; color: var(--gold);
  border: 1px solid var(--border-hi);
  padding: .4rem .9rem; border-radius: 50px;
  background: rgba(212,175,55,.06);
  margin-bottom: 1.6rem;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  line-height: 1.02;
  letter-spacing: -1px;
}
.hero-title em {
  font-style: normal;
  background: linear-gradient(120deg, var(--gold), var(--magenta) 50%, var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  display: block; margin-top: .4rem;
  font-size: clamp(1rem, 2.6vw, 1.7rem);
  font-weight: 500; letter-spacing: 4px;
  color: var(--violet); font-family: var(--font-body);
  text-transform: uppercase;
}
.lead {
  margin-top: 1.6rem; max-width: 540px;
  color: var(--muted); font-size: 1.06rem;
}
.hero-stats {
  margin-top: 1.8rem; display: flex; flex-wrap: wrap; align-items: center; gap: .9rem;
  font-size: .85rem; color: var(--muted); font-family: var(--font-mono);
}
.hero-stats strong { color: var(--gold); font-size: 1rem; }
.hero-stats .sep { color: var(--violet); }

.cta {
  display: inline-flex; align-items: center; gap: .5rem;
  margin-top: 2.2rem;
  padding: .85rem 1.6rem;
  border-radius: 50px;
  font-weight: 700; letter-spacing: .5px; font-size: .92rem;
  color: #1a0d3a;
  background: linear-gradient(120deg, var(--gold), var(--gold-2));
  box-shadow: 0 12px 30px -10px rgba(212,175,55,.7), var(--shadow);
  transition: transform .25s, box-shadow .25s;
}
.cta:hover { transform: translateY(-2px); box-shadow: 0 18px 38px -10px rgba(212,175,55,.85); }
.cta span { transition: transform .25s; }
.cta:hover span { transform: translateX(4px); }

/* Sistema orbital decorativo */
.orbit {
  position: relative; aspect-ratio: 1; max-width: 360px; justify-self: center;
  margin-inline: auto;
}
.orbit-ring {
  position: absolute; inset: 0; margin: auto;
  border: 1px solid var(--border); border-radius: 50%;
  box-shadow: inset 0 0 40px -10px rgba(167,139,250,.4);
}
.orbit-ring.r1 { width: 100%; height: 100%; animation: spin 28s linear infinite; }
.orbit-ring.r2 { width: 76%; height: 76%; border-color: var(--border-hi); animation: spin 18s linear reverse infinite; }
.orbit-ring.r3 { width: 52%; height: 52%; border-style: dashed; animation: spin 12s linear infinite; }
.orbit-ring.r1::before, .orbit-ring.r2::before {
  content: ''; position: absolute; width: 10px; height: 10px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 16px var(--gold); top: -5px; left: 50%; transform: translateX(-50%);
}
.orbit-ring.r2::before { background: var(--cyan); box-shadow: 0 0 16px var(--cyan); top: auto; bottom: -5px; }
.orbit-ring.r3::before {
  background: var(--magenta); box-shadow: 0 0 16px var(--magenta);
  width: 8px; height: 8px; left: -4px; top: 50%; transform: translateY(-50%);
}
.orbit-core {
  position: absolute; inset: 0; margin: auto;
  width: 26%; height: 26%; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 2.6rem; color: var(--gold);
  background: radial-gradient(circle at 30% 30%, rgba(232,194,82,.4), rgba(124,92,255,.12));
  border: 1px solid var(--border-hi);
  box-shadow: var(--glow), inset 0 0 30px rgba(212,175,55,.3);
  animation: pulse 4s ease-in-out infinite;
}
@keyframes spin   { to { transform: rotate(360deg); } }
@keyframes pulse  { 0%,100%{box-shadow:var(--glow), inset 0 0 30px rgba(212,175,55,.3)} 50%{box-shadow:0 0 60px -4px rgba(232,194,82,.6), inset 0 0 40px rgba(212,175,55,.45)} }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-inner { margin-inline: auto; }
  .orbit { max-width: 240px; order: -1; margin-bottom: 1.5rem; }
}

/* ═══ Controls ═══ */
.controls {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 1.5rem 1rem;
}
.search-wrap {
  position: relative; margin-bottom: 1.2rem;
}
.search-icon {
  position: absolute; left: 1.1rem; top: 50%; transform: translateY(-50%);
  color: var(--gold); font-size: 1.3rem; opacity: .8;
}
#search {
  width: 100%;
  padding: 1rem 1.3rem 1rem 3.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text); font-size: 1rem; font-family: var(--font-body);
  backdrop-filter: blur(8px);
  transition: border-color .25s, box-shadow .25s, background .25s;
}
#search::placeholder { color: var(--muted); }
#search:focus {
  outline: none; border-color: var(--border-hi);
  box-shadow: 0 0 0 4px rgba(212,175,55,.12), var(--glow);
  background: var(--surface-2);
}

.result-count {
  margin-top: 1.1rem; font-size: .82rem; color: var(--muted);
  font-family: var(--font-mono);
}
.result-count strong { color: var(--gold); }

/* ═══ Catálogo ═══ */
.catalog { max-width: var(--maxw); margin: 1.4rem auto 0; padding: 0 1.5rem 4rem; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.6rem;
}

.book {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  display: flex; flex-direction: column;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: transform .3s cubic-bezier(.2,.7,.3,1), border-color .3s, box-shadow .3s;
  opacity: 0; transform: translateY(18px);
  animation: rise .6s forwards;
}
.book:hover {
  transform: translateY(-6px);
  border-color: var(--border-hi);
  box-shadow: var(--glow), var(--shadow);
}
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

.book-cover {
  position: relative; aspect-ratio: 2 / 3;
  background: linear-gradient(150deg, var(--bg-2), var(--bg-0));
  overflow: hidden;
}
.book-cover img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .5s ease;
}
.book:hover .book-cover img { transform: scale(1.05); }
.book-cover .procedural {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
  padding: 1.4rem;
}
.book-cover .procedural .pt {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1rem; line-height: 1.25; color: var(--gold);
  text-shadow: 0 0 12px rgba(212,175,55,.5);
}
.book-cover .procedural .pa {
  margin-top: .6rem; font-size: .68rem; letter-spacing: 2px;
  text-transform: uppercase; color: var(--muted);
}
.book-cover .procedural .ps { margin-top: .5rem; font-size: 1.6rem; color: var(--violet); }
.book-cover .badge {
  position: absolute; top: .7rem; left: .7rem; z-index: 2;
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: 1px;
  text-transform: uppercase; font-weight: 700;
  padding: .3rem .6rem; border-radius: 50px;
  background: rgba(5,3,15,.7); border: 1px solid var(--border-hi);
  color: var(--gold); backdrop-filter: blur(6px);
}
.book-cover .featured-star {
  position: absolute; top: .7rem; right: .7rem; z-index: 2;
  width: 26px; height: 26px; border-radius: 50%;
  display: grid; place-items: center; font-size: .8rem;
  background: rgba(5,3,15,.7); border: 1px solid var(--border-hi);
  color: var(--gold); backdrop-filter: blur(6px);
}
.book-info {
  padding: .9rem 1rem 1.1rem; display: flex; flex-direction: column; gap: .3rem; flex: 1;
}
.book-info h3 {
  font-family: var(--font-display); font-weight: 700;
  font-size: 1.02rem; line-height: 1.25;
}
.book-author { font-size: .82rem; color: var(--muted); }
.book-foot {
  margin-top: auto; padding-top: .6rem;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-mono); font-size: .74rem; color: var(--muted);
}
.stars { color: var(--gold); letter-spacing: 1px; }
.stars .empty { color: rgba(212,175,55,.25); }

/* ── Estado vacío ── */
.empty {
  text-align: center; padding: 4rem 1rem; color: var(--muted);
}
.empty-sigil { font-size: 3rem; color: var(--violet); display: block; margin-bottom: .8rem; }

/* ═══ Guía pasos ═══ */
.guide {
  max-width: var(--maxw); margin: 2rem auto 0; padding: 3rem 1.5rem;
  text-align: center;
}
.guide h2 {
  display: flex; align-items: center; justify-content: center; gap: 1rem;
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(1.4rem, 3vw, 2rem); letter-spacing: 1px; margin-bottom: 2.4rem;
}
.guide h2 .rule {
  height: 1px; width: clamp(40px, 12vw, 120px);
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.steps {
  list-style: none; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem; text-align: left; counter-reset: step;
}
.steps li {
  position: relative; padding: 1.4rem 1.3rem 1.3rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); backdrop-filter: blur(10px);
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.steps li:hover { border-color: var(--border-hi); transform: translateY(-3px); box-shadow: var(--glow); }
.step-n {
  font-family: var(--font-mono); font-size: .78rem; color: var(--gold);
  letter-spacing: 2px; display: block; margin-bottom: .6rem;
}
.steps strong { display: block; font-family: var(--font-display); font-size: 1.08rem; margin-bottom: .4rem; }
.steps p { font-size: .92rem; color: var(--muted); }

/* ═══ Sobre ═══ */
.about {
  max-width: 760px; margin: 3rem auto; padding: 0 1.5rem 2rem; text-align: center;
}
.about h2 {
  font-family: var(--font-display); font-weight: 900; font-size: 1.8rem; margin-bottom: 1rem;
}
.about p { color: var(--muted); margin-bottom: 1rem; font-size: 1rem; }

/* ═══ Footer ═══ */
.site-footer {
  border-top: 1px solid var(--border);
  text-align: center; padding: 2.4rem 1.5rem;
  font-family: var(--font-mono); font-size: .8rem; letter-spacing: 1px;
  color: var(--muted);
  background: linear-gradient(180deg, transparent, rgba(5,3,15,.6));
}
.site-footer .sigil { color: var(--gold); }

/* ═══ Modal ═══ */
.modal {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center; padding: 1.5rem;
  opacity: 0; pointer-events: none;
  transition: opacity .3s;
}
.modal.open { opacity: 1; pointer-events: auto; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(3,2,10,.78); backdrop-filter: blur(6px);
}
.modal-card {
  position: relative; z-index: 1;
  width: min(860px, 100%);
  max-height: 88vh; overflow: auto;
  display: grid; grid-template-columns: 280px 1fr; gap: 1.8rem;
  background: linear-gradient(160deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--border-hi); border-radius: var(--radius-lg);
  box-shadow: var(--glow), 0 40px 80px -30px rgba(0,0,0,.9);
  padding: 1.8rem;
  transform: scale(.96) translateY(10px);
  transition: transform .3s cubic-bezier(.2,.7,.3,1);
}
.modal.open .modal-card { transform: scale(1) translateY(0); }
.modal-close {
  position: absolute; top: 1rem; right: 1rem; z-index: 2;
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(5,3,15,.6); border: 1px solid var(--border);
  color: var(--text); cursor: pointer; font-size: 1rem;
  transition: border-color .2s, transform .2s;
}
.modal-close:hover { border-color: var(--gold); transform: rotate(90deg); }

.modal-cover {
  aspect-ratio: 2/3; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); background: var(--bg-0);
}
.modal-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.modal-cover .procedural { width: 100%; height: 100%; display: grid; place-items: center; text-align: center; padding: 1.5rem; }
.modal-cover .pt { font-family: var(--font-display); font-weight: 700; color: var(--gold); font-size: 1.1rem; }
.modal-cover .pa { margin-top: .6rem; font-size: .7rem; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }

.modal-cat {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: 2px;
  text-transform: uppercase; color: var(--gold); margin-bottom: .5rem;
}
.modal-body h3 {
  font-family: var(--font-display); font-weight: 900;
  font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.15; margin-bottom: .3rem;
}
.modal-author { color: var(--violet); font-size: .95rem; margin-bottom: .6rem; }
.modal-meta {
  display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0 1rem;
  font-family: var(--font-mono); font-size: .76rem; color: var(--muted);
}
.modal-meta span {
  padding: .25rem .6rem; border: 1px solid var(--border); border-radius: 50px;
  background: var(--surface);
}
.modal-desc { color: var(--text); font-size: 1rem; margin-bottom: 1.4rem; }
.modal-link {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.4rem; border-radius: 50px;
  color: #1a0d3a; font-weight: 700; font-size: .9rem;
  background: linear-gradient(120deg, var(--gold), var(--gold-2));
  box-shadow: 0 10px 24px -10px rgba(212,175,55,.7);
  transition: transform .2s;
}
.modal-link:hover { transform: translateY(-2px); }
.modal-rating {
  margin-top: 1rem; font-family: var(--font-mono); font-size: .8rem; color: var(--muted);
}
.modal-rating .stars { display: inline; }

@media (max-width: 620px) {
  .modal-card { grid-template-columns: 1fr; padding: 1.4rem; gap: 1.2rem; }
  .modal-cover { max-width: 180px; margin: 0 auto; }
}

/* ═══ Accesibilidad / motion ═══ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
}

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

/* Print-friendly (nominal) */
@media print { #starfield, .orbit, .cta { display: none; } body { background: #fff; color: #000; } }