/* ============================================================
   I. ROIG · UNIVERSO 404 — v6 "EDICIÓN IMPRESA"
   Dirección: editorial de horror impresa. Tinta, hueso y sangre.
   Bloques sólidos, bordes duros, serif slab de cartel,
   metadata en monoespaciada. Firma visual: LA GRIETA.
   ============================================================ */

:root {
  --ink: #0b0a08;
  --ink-2: #131110;
  --panel: #17140f;
  --line: #2b2620;
  --bone: #ece3d4;
  --ash: #a89f8f;
  --blood: #c1121f;
  --blood-deep: #780000;
  --font-display: 'Alfa Slab One', 'Rockwell Extra Bold', Georgia, serif;
  --font-body: 'Lora', Georgia, 'Times New Roman', serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--bone);
  background: var(--ink);
  min-height: 100vh;
}
/* Grano de papel impreso */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .5;
  background-image: repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0 1px, transparent 1px 3px);
}
a { color: inherit; text-decoration: none; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--blood);
  color: var(--bone);
  padding: 12px 18px;
  font-family: var(--font-mono);
}
.skip-link:focus { left: 0; }

/* ------------------------------------------------------------
   CABECERA — barra de imprenta
   ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(18px, 4vw, 56px);
  height: 64px;
  background: var(--ink);
  border-bottom: 3px solid var(--blood);
}
.logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: .04em;
  color: var(--bone);
}
.logo::after {
  content: " /404";
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--blood);
  vertical-align: super;
}
.nav { display: flex; gap: 4px; }
.nav a {
  font-family: var(--font-mono);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .11em;
  color: var(--ash);
  padding: 8px 10px;
  border: 1px solid transparent;
  transition: color .15s, background .15s;
}
.nav a:hover { color: var(--ink); background: var(--bone); }
.nav-toggle {
  display: none;
  width: 46px;
  height: 42px;
  background: transparent;
  border: 2px solid var(--bone);
  color: var(--bone);
  padding: 0;
  border-radius: 0;
  position: relative;
  cursor: pointer;
}
.nav-toggle span { display: block; width: 20px; height: 2px; margin: 5px auto; background: var(--bone); transition: transform .22s ease, opacity .22s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------------------------------------
   REPRODUCTOR DE ATMÓSFERA — consola mono flotante
   ------------------------------------------------------------ */
.music-player {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-left: 4px solid var(--blood);
  font-family: var(--font-mono);
}
.music-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  color: var(--bone);
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  cursor: pointer;
  padding: 6px 4px;
}
.music-toggle .music-icon { color: var(--blood); font-size: 1rem; }
.music-toggle.playing .music-icon { animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }
.volume-control {
  font-size: .68rem;
  color: var(--ash);
  text-transform: uppercase;
  letter-spacing: .1em;
}
.music-volume { width: 78px; accent-color: var(--blood); }

/* ------------------------------------------------------------
   TIPOGRAFÍA BASE
   ------------------------------------------------------------ */
h1, h2, h3 { font-family: var(--font-display); font-weight: 400; margin-top: 0; }
h1 { font-size: clamp(3.4rem, 10vw, 8.5rem); line-height: .92; letter-spacing: .01em; margin-bottom: 26px; text-transform: uppercase; }
h2 { font-size: clamp(1.9rem, 4.4vw, 3.6rem); line-height: 1; margin-bottom: 18px; text-transform: uppercase; }
h3 { font-size: 1.35rem; margin-bottom: 10px; }
p, li { color: var(--ash); font-size: 1.04rem; line-height: 1.75; margin-top: 0; }
strong { color: var(--bone); }
.eyebrow {
  font-family: var(--font-mono);
  color: var(--blood);
  text-transform: uppercase;
  letter-spacing: .28em;
  font-size: .74rem;
  margin-bottom: 14px;
}
.eyebrow::before { content: "// "; color: var(--ash); }

.section {
  position: relative;
  padding: clamp(64px, 8vw, 110px) clamp(18px, 5vw, 80px);
  max-width: 1220px;
  margin: 0 auto;
}

/* LA GRIETA — divisor firma entre secciones */
.section-heading { max-width: 800px; margin-bottom: 40px; }
.section-heading h2 { position: relative; padding-bottom: 18px; }
.section-heading h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 140px;
  height: 5px;
  background: var(--blood);
  transform: skewX(-24deg);
  box-shadow: 152px 0 0 -1px var(--blood-deep);
}

/* ------------------------------------------------------------
   HERO — cartel de cine con tajo diagonal
   ------------------------------------------------------------ */
.hero {
  display: grid;
  grid-template-columns: 1.35fr .85fr;
  min-height: 78vh;
  align-items: center;
  gap: 42px;
}
.hero-grieta {
  position: relative;
  max-width: none;
  min-height: calc(100vh - 64px);
  padding-left: clamp(18px, 6vw, 96px);
  padding-right: clamp(18px, 6vw, 96px);
  isolation: isolate;
  overflow: hidden;
  border-bottom: 6px solid var(--blood);
}
.hero-grieta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: image-set(url('assets/la-grieta-hero.webp') type('image/webp'), url('assets/la-grieta-hero.jpg') type('image/jpeg'));
  background-position: center;
  background-size: cover;
  filter: brightness(.55) contrast(1.15) saturate(.85);
}
/* EL TAJO: grieta diagonal roja que corta el hero */
.hero-grieta::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, transparent 0 54.62%, var(--blood) 54.62% 54.98%, transparent 54.98% 55.85%, var(--blood-deep) 55.85% 56.05%, transparent 56.05%),
    linear-gradient(90deg, rgba(11,10,8,.94) 0%, rgba(11,10,8,.55) 46%, rgba(11,10,8,.82) 100%);
}
.hero-grieta .hero-content {
  max-width: 780px;
  padding: clamp(22px, 4vw, 40px);
  background: rgba(11,10,8,.66);
  border-left: 6px solid var(--blood);
}
.hero-grieta h1 {
  color: var(--bone);
  text-shadow: 6px 6px 0 var(--ink), 9px 9px 0 var(--blood-deep);
}
.hero-text { max-width: 640px; font-size: 1.28rem; color: var(--bone); }
.hero-text strong { color: var(--blood); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .06em; font-size: 1.05rem; }

.hero-actions, .book-actions, .social-links { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-actions { margin-top: 32px; }

/* Botones tipo sello de imprenta */
.btn {
  font-family: var(--font-mono);
  font-size: .84rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  padding: 14px 22px;
  border: 2px solid var(--bone);
  border-radius: 0;
  color: var(--bone);
  background: transparent;
  transition: background .15s, color .15s, transform .15s, box-shadow .15s;
}
.btn.primary {
  background: var(--blood);
  border-color: var(--blood);
  color: var(--bone);
  box-shadow: 5px 5px 0 var(--blood-deep);
}
.btn.primary:hover { transform: translate(-2px, -2px); box-shadow: 8px 8px 0 var(--blood-deep); }
.btn.ghost:hover { background: var(--bone); color: var(--ink); }

/* Tarjeta Ω del hero: placa sólida */
.hero-card {
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-top: 6px solid var(--blood);
  padding: 34px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.omega {
  font-size: 7rem;
  color: var(--blood);
  line-height: .8;
  font-family: var(--font-display);
}
.hero-card h2 { font-size: 1.6rem; margin: 14px 0 10px; }

/* ------------------------------------------------------------
   FRANJA AMAZON — banda de aviso
   ------------------------------------------------------------ */
.amazon-strip {
  max-width: 1120px;
  margin: -30px auto 0;
  position: relative;
  z-index: 2;
  padding: 20px clamp(18px, 4vw, 32px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  background: var(--bone);
  color: var(--ink);
  border: none;
}
.amazon-strip strong { display: block; color: var(--ink); font-family: var(--font-display); font-size: clamp(1.1rem, 3vw, 1.5rem); text-transform: uppercase; }
.amazon-strip span { display: block; color: #57503f; margin-top: 4px; font-family: var(--font-mono); font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; }
.amazon-strip .btn.primary { box-shadow: 5px 5px 0 var(--ink); }

/* ------------------------------------------------------------
   ESTADÍSTICAS — cifras de imprenta
   ------------------------------------------------------------ */
.stats-section { padding-top: 44px; padding-bottom: 10px; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 2px solid var(--line); }
.stats-grid article {
  padding: 28px 20px;
  text-align: center;
  background: var(--ink-2);
  border-radius: 0;
  border-right: 2px solid var(--line);
}
.stats-grid article:last-child { border-right: none; }
.stats-grid strong { display: block; font-family: var(--font-display); font-size: clamp(2.4rem, 6vw, 4.4rem); color: var(--blood); line-height: 1; }
.stats-grid span { color: var(--ash); text-transform: uppercase; letter-spacing: .16em; font-size: .74rem; font-family: var(--font-mono); }

/* ------------------------------------------------------------
   CATÁLOGO — expedientes numerados
   ------------------------------------------------------------ */
.catalog-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 26px;
  padding: 14px 18px;
  background: var(--ink-2);
  border-left: 4px solid var(--blood);
}
.catalog-toolbar p { margin: 0; font-size: .92rem; }
.tag, .status {
  font-family: var(--font-mono);
  color: var(--blood);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .14em;
}
.status { border: 1px solid var(--blood); padding: 7px 12px; border-radius: 0; white-space: nowrap; }

.book-grid { display: grid; gap: 0; counter-reset: libro; border: 2px solid var(--line); }
.editorial-grid { grid-template-columns: repeat(2, 1fr); }
.book-card {
  counter-increment: libro;
  position: relative;
  display: grid;
  grid-template-columns: 165px 1fr;
  gap: 22px;
  padding: 26px;
  background: var(--ink);
  border: none;
  outline: 1px solid var(--line);
  border-radius: 0;
  box-shadow: none;
  transition: background .2s;
}
.book-card:hover { background: var(--panel); }
/* Número de expediente */
.book-info::before {
  content: "LIBRO " counter(libro, upper-roman);
  display: block;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .3em;
  color: var(--ash);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
  margin-bottom: 12px;
}
.book-cover.image-cover {
  min-height: auto;
  padding: 0;
  overflow: hidden;
  background: #000;
  border: 2px solid var(--line);
  border-radius: 0;
  align-self: start;
}
.book-cover.image-cover img {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
  display: block;
  transition: transform .25s ease, filter .25s ease;
}
.book-cover.image-cover:hover img { transform: scale(1.04); filter: contrast(1.1); }
.book-info h3 { text-transform: uppercase; letter-spacing: .01em; }
.book-info > p:not(.tag) { font-size: .96rem; }
.book-actions { margin-top: 16px; }
.book-actions .btn { font-size: .74rem; padding: 11px 16px; }

/* ------------------------------------------------------------
   LÍNEA TEMPORAL DEL UNIVERSO — lomo de colección
   ------------------------------------------------------------ */
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 2px solid var(--line); }
.timeline-item {
  padding: 24px 20px;
  background: var(--ink-2);
  border-radius: 0;
  border-right: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
  box-shadow: none;
}
.timeline-item span {
  display: inline-block;
  width: auto;
  height: auto;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .2em;
  color: var(--bone);
  background: var(--blood);
  padding: 5px 10px;
  border-radius: 0;
  margin-bottom: 16px;
}
.timeline-item h3 { font-size: 1.02rem; line-height: 1.25; }
.timeline-item p { font-size: .9rem; }

/* ------------------------------------------------------------
   AUTOR — retrato de solapa
   ------------------------------------------------------------ */
.author-section { display: grid; grid-template-columns: 320px 1fr; gap: 0; align-items: stretch; }
.author-photo-wrap {
  padding: 0;
  background: var(--blood);
  border: none;
  border-radius: 0;
  box-shadow: none;
  display: flex;
}
.author-photo {
  width: 100%;
  display: block;
  object-fit: cover;
  border-radius: 0;
  filter: grayscale(1) contrast(1.15);
  mix-blend-mode: multiply;
  aspect-ratio: auto;
}
.author-copy {
  background: var(--bone);
  color: var(--ink);
  border: none;
  border-radius: 0;
  padding: clamp(28px, 4vw, 52px);
  box-shadow: none;
}
.author-copy h2, .author-copy strong { color: var(--ink); }
.author-copy p { color: #45402f; }
.author-copy .eyebrow { color: var(--blood); }
.author-copy .eyebrow::before { color: #857c66; }
.author-copy em { color: var(--blood); font-style: italic; }
.signature {
  color: var(--blood);
  font-family: var(--font-display);
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ------------------------------------------------------------
   NOCTURNE — placa sonora
   ------------------------------------------------------------ */
.nocturne-section { max-width: 1000px; }
.nocturne-card {
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5vw, 56px);
  background: var(--blood-deep);
  border: none;
  border-radius: 0;
  box-shadow: none;
}
.nocturne-card p { color: #e8c9c2; max-width: 720px; }
.nocturne-card .eyebrow { color: var(--bone); }
.nocturne-card::after {
  content: "NOCTURNE";
  position: absolute;
  right: -14px;
  bottom: -22px;
  font-family: var(--font-display);
  font-size: clamp(3rem, 12vw, 8rem);
  color: rgba(11,10,8,.28);
  pointer-events: none;
}
.nocturne-card .btn.primary { background: var(--ink); border-color: var(--ink); box-shadow: 5px 5px 0 rgba(0,0,0,.45); }
.nocturne-card .btn.ghost { border-color: var(--bone); }

.projects-section .nocturne-card {
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-left: 6px solid var(--blood);
}
.projects-section .nocturne-card::after { content: "404 APPS"; }
.projects-section .nocturne-card p { color: var(--ash); }
.projects-section .nocturne-card .btn.primary { background: var(--blood); border-color: var(--blood); box-shadow: 5px 5px 0 var(--blood-deep); }


/* ------------------------------------------------------------
   CONTACTO Y PIE
   ------------------------------------------------------------ */
.contact { text-align: center; max-width: 820px; }
.contact-box {
  margin: 24px auto 18px;
  padding: 18px;
  display: flex;
  justify-content: center;
  background: var(--ink-2);
  border: 2px solid var(--line);
}
.contact-link { color: var(--bone); font-family: var(--font-mono); font-size: 1.1rem; }
.contact-link:hover { color: var(--blood); }
.social-links { justify-content: center; margin-top: 20px; }
.social-links a {
  font-family: var(--font-mono);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  border: 2px solid var(--line);
  border-radius: 0;
  padding: 12px 16px;
  color: var(--ash);
  transition: .15s;
}
.social-links a:hover { background: var(--bone); color: var(--ink); border-color: var(--bone); }
.site-footer {
  padding: 30px 30px 96px;
  text-align: center;
  border-top: 3px solid var(--blood);
  font-family: var(--font-mono);
  font-size: .82rem;
}
.site-footer a { color: var(--blood); }

/* ------------------------------------------------------------
   FICHAS DE NOVELA
   ------------------------------------------------------------ */
.detail-hero { position: relative; display: grid; grid-template-columns: minmax(260px, 380px) 1fr; gap: clamp(24px, 4vw, 48px); align-items: start; padding-top: clamp(44px, 6vw, 80px); }
.book-detail-cover {
  width: 100%;
  height: auto;
  display: block;
  border: 2px solid var(--line);
  box-shadow: 10px 10px 0 var(--blood-deep);
}
.book-detail-card {
  background: var(--ink-2);
  border: 2px solid var(--line);
  border-top: 6px solid var(--blood);
  border-radius: 0;
  box-shadow: none;
  padding: clamp(24px, 4vw, 44px);
}
.book-detail-card h1 { font-size: clamp(2.2rem, 6vw, 4.2rem); }
.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--ash);
  margin-bottom: 18px;
}
.back-link:hover { color: var(--blood); }
.detail-layout { display: grid; grid-template-columns: 1fr 320px; gap: 0; align-items: stretch; border: 2px solid var(--line); }
.detail-panel {
  padding: 28px;
  background: var(--ink-2);
  border: none;
  border-radius: 0;
  box-shadow: none;
}
.detail-layout .detail-panel:first-child { border-right: 2px solid var(--line); }
.detail-panel ul { padding-left: 20px; margin-bottom: 0; }
.meta-list div { display: grid; gap: 2px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.meta-list div:last-child { border-bottom: none; }
.meta-list span { font-family: var(--font-mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .2em; color: var(--ash); }

/* Galería y reseñas (páginas antiguas, por compatibilidad) */
.cover-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cover-gallery a { display: block; border: 2px solid var(--line); background: #000; border-radius: 0; overflow: hidden; }
.cover-gallery img { width: 100%; aspect-ratio: 2 / 3; object-fit: cover; display: block; transition: .25s; }
.cover-gallery a:hover img { transform: scale(1.04); }
.reader-section { max-width: 980px; }
.review-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; margin-top: 22px; border: 2px solid var(--line); }
.review-grid article { padding: 24px; background: var(--ink-2); border-radius: 0; box-shadow: none; border-right: 2px solid var(--line); }
.review-grid article:last-child { border-right: none; }

/* ------------------------------------------------------------
   ANIMACIONES Y ACCESIBILIDAD
   ------------------------------------------------------------ */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.delay { transition-delay: .1s; }

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--blood);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .music-toggle.playing .music-icon { animation: none; }
  * { transition-duration: .01ms !important; }
}

/* ------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
  .editorial-grid { grid-template-columns: 1fr; }
}
@media (max-width: 950px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 850px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    right: 0;
    left: 0;
    top: 64px;
    flex-direction: column;
    background: var(--ink);
    border-bottom: 3px solid var(--blood);
    padding: 12px 18px 18px;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px; border-bottom: 1px solid var(--line); }
  .nav a:last-child { border-bottom: none; }
  body.menu-open { overflow: hidden; }

  .hero, .author-section, .detail-hero, .detail-layout { grid-template-columns: 1fr; }
  .hero-grieta { min-height: calc(100vh - 64px); }
  .hero-grieta h1 { text-shadow: 4px 4px 0 var(--ink), 6px 6px 0 var(--blood-deep); }
  .hero-card { margin-top: 8px; }

  .amazon-strip { flex-direction: column; text-align: center; margin-top: 0; }

  .stats-grid { grid-template-columns: 1fr; }
  .stats-grid article { border-right: none; border-bottom: 2px solid var(--line); }
  .stats-grid article:last-child { border-bottom: none; }

  .book-card { grid-template-columns: 1fr; padding: 20px; }
  .book-cover.image-cover { max-width: min(320px, 88vw); margin: 0 auto; }
  .book-cover.image-cover img { min-height: 380px; object-fit: contain; background: #000; }
  .book-actions .btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; }

  .author-photo-wrap { max-width: none; }
  .author-photo { max-height: 420px; width: 100%; }

  .detail-layout .detail-panel:first-child { border-right: none; border-bottom: 2px solid var(--line); }
  .book-detail-cover { max-width: min(340px, 86vw); margin: 0 auto; box-shadow: 6px 6px 0 var(--blood-deep); }

  .music-player { right: 10px; bottom: 10px; padding: 8px 10px; }
  .music-volume { width: 60px; }
  .review-grid { grid-template-columns: 1fr; }
  .review-grid article { border-right: none; border-bottom: 2px solid var(--line); }
  .review-grid article:last-child { border-bottom: none; }
  .cover-gallery { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .timeline { grid-template-columns: 1fr; }
  h1 { font-size: clamp(2.6rem, 15vw, 4.4rem); }
}


/* ------------------------------------------------------------
   GLITCH 404 — efecto inestable en el título del hero
   ------------------------------------------------------------ */
@keyframes glitchFlicker{0%,89%,100%{opacity:1;transform:translate(0,0)}90%{opacity:.7;transform:translate(-2px,1px)}92%{opacity:1;transform:translate(2px,-1px)}94%{opacity:.85;transform:translate(-1px,0)}96%{opacity:1;transform:translate(0,0)}}
@keyframes glitchSplit{0%,89%,100%{opacity:0;clip-path:inset(0 0 100% 0);transform:translate(0,0)}90%{opacity:.75;clip-path:inset(10% 0 60% 0);transform:translate(-4px,0)}92%{opacity:.75;clip-path:inset(60% 0 5% 0);transform:translate(4px,0)}94%{opacity:0;clip-path:inset(0 0 100% 0);transform:translate(0,0)}}
@keyframes scanMove{0%{transform:translateY(-100%)}100%{transform:translateY(100%)}}

.glitch-title{position:relative;display:inline-block;animation:glitchFlicker 3.4s infinite}
.glitch-title::before{content:attr(data-text);position:absolute;inset:0;color:var(--blood);opacity:.65;animation:glitchSplit 3.4s infinite;pointer-events:none}

.scan-overlay{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:1}
.scan-overlay::before{content:"";position:absolute;left:0;right:0;height:30%;background:rgba(0,229,199,.05);animation:scanMove 4s linear infinite}



/* Glitch al pasar el ratón sobre botones principales */
@keyframes btnGlitch{0%,100%{transform:translate(0,0);text-shadow:none}20%{transform:translate(-2px,1px);text-shadow:2px 0 #00e5c7,-2px 0 var(--blood-deep)}40%{transform:translate(2px,-1px);text-shadow:-2px 0 #00e5c7,2px 0 var(--blood-deep)}60%{transform:translate(-1px,0);text-shadow:1px 0 #00e5c7,-1px 0 var(--blood-deep)}80%{transform:translate(1px,1px);text-shadow:none}}
.btn.primary:hover{animation:btnGlitch .4s steps(2) infinite}

.back-to-top{position:fixed;left:16px;bottom:16px;z-index:30;width:44px;height:44px;background:var(--ink-2);border:2px solid var(--line);border-left:4px solid var(--blood);color:var(--bone);font-size:1.1rem;line-height:1;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,transform .2s,visibility .2s}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--blood);color:var(--ink)}