/* ============================================================
   DEVANADA — styles.css
   Hoja de estilos ÚNICA y compartida por todas las páginas
   (index.html + galeria-stickers/ + galeria-fanzines/ +
   otras-actividades/). No dupliques este archivo: enlázalo
   siempre con ruta relativa ("styles.css" o "../styles.css").
   ============================================================
   Índice:
   1. Reset básico
   2. Tokens de diseño (variables)
   3. Accesibilidad y utilidades globales
   4. Tipografía base
   5. Cabecera fija + botón "Volver"
   6. Hero / introducción
   7. Títulos de sección
   8. Cuadrícula de productos (index)
   9. Sección de contacto
   10. Galerías (pegatinas / fanzines)
   11. Vídeo destacado (fanzines)
   12. Otras actividades
   13. Cajas "próximamente"
   14. Responsive
   15. Movimiento reducido
   ============================================================ */


/* ------------------------------------------------------------
   1. RESET BÁSICO
   ------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1, h2, h3,
p, figure {
  margin: 0;
}

img, video {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}


/* ------------------------------------------------------------
   2. TOKENS DE DISEÑO
   Cambia aquí color/tipografía/espaciado y se propaga a todo
   el sitio.
   ------------------------------------------------------------ */
:root {
  /* Color */
  --color-bg: #ede3c8;          /* fondo sepia pálido (obligatorio) */
  --color-bg-card: #f7f0dc;     /* superficie de tarjetas y galerías */
  --color-header: #1d4e96;      /* azul de la cabecera (obligatorio) */
  --color-header-dark: #123765; /* azul oscuro para bordes/sombras */
  --color-ink: #2b2013;         /* texto principal / "tinta" */
  --color-ink-soft: #5b4e3a;    /* texto secundario */
  --color-accent: #c3d62e;      /* verde ácido: acento de firma visual */
  --color-accent-2: #d6483b;    /* rojo cómic: avisos / "próximamente" */
  --color-white: #fffdf6;

  /* Tipografía */
  --font-display: "Arial Black", "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "Courier New", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout */
  --header-height: 92px;
  --radius-card: 14px;
  --max-width: 1100px;

  /* Espaciado */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;

  /* Movimiento (200–300ms según requisito) */
  --transition-fast: 220ms ease;
  --transition-medium: 280ms ease;
}


/* ------------------------------------------------------------
   3. ACCESIBILIDAD Y UTILIDADES GLOBALES
   ------------------------------------------------------------ */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-accent);
  color: var(--color-ink);
  padding: 0.6rem 1rem;
  z-index: 999;
  font-family: var(--font-mono);
  font-weight: 700;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  left: 0;
}

a:focus,
button:focus,
[tabindex]:focus {
  outline: 3px solid var(--color-accent-2);
  outline-offset: 2px;
}


/* ------------------------------------------------------------
   4. TIPOGRAFÍA BASE
   ------------------------------------------------------------ */
body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background-color: var(--color-bg);
  /* Textura de trama sutil (halftone) que unifica todas las páginas */
  background-image: radial-gradient(rgba(43, 32, 19, 0.06) 1px, transparent 1.5px);
  background-size: 14px 14px;
  padding-top: var(--header-height); /* compensa la cabecera fija */
  line-height: 1.6;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}


/* ------------------------------------------------------------
   5. CABECERA FIJA + BOTÓN "VOLVER"
   Misma estructura HTML/CSS en todas las páginas: solo cambia
   si incluyen o no el botón .btn-back.
   ------------------------------------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-height);
  background-color: var(--color-header);
  border-bottom: 4px solid var(--color-header-dark);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  overflow: hidden;
}

/* Trama sutil también en la cabecera, para reforzar el aspecto impreso */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.35) 1.5px, transparent 1.6px);
  background-size: 12px 12px;
  opacity: 0.5;
  pointer-events: none;
}

.site-header > * {
  position: relative;
  z-index: 1;
}

.header-brand {
  display: flex;
  align-items: center;
  height: 100%;
  position: relative;
}

.logo {
  --logo-width: 600px;
  --logo-height: 180px;
  width: var(--logo-width);
  height: var(--logo-height);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.35));
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  object-fit: contain;
}

.btn-back {
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--color-accent);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  border: 2px solid var(--color-ink);
  box-shadow: 3px 3px 0 var(--color-ink);
  white-space: nowrap;
  transition: transform var(--transition-fast),
              box-shadow var(--transition-fast),
              background-color var(--transition-fast);
}

.btn-back:hover,
.btn-back:focus {
  cursor: pointer;
  background-color: var(--color-white);
  transform: translateY(calc(-50% - 2px));
  box-shadow: 4px 5px 0 var(--color-ink);
}


/* ------------------------------------------------------------
   6. HERO / INTRODUCCIÓN (index)
   ------------------------------------------------------------ */
.hero {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-lg) 0 var(--space-sm);
  text-align: center;
}

.hero__tagline {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  font-style: italic;
}


/* ------------------------------------------------------------
   7. TÍTULOS DE SECCIÓN
   ------------------------------------------------------------ */
.section-title {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.8rem;
  text-align: center;
  margin: var(--space-lg) 0 var(--space-md);
}

.section-title::after {
  content: "";
  display: block;
  width: 70px;
  height: 5px;
  background-color: var(--color-accent);
  margin: 0.6rem auto 0;
  border-radius: 3px;
}

.section-title--inverse {
  color: var(--color-white);
  margin-top: 0;
}


/* ------------------------------------------------------------
   8. CUADRÍCULA DE PRODUCTOS (index) — 2 columnas
   ------------------------------------------------------------ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  padding-bottom: var(--space-lg);
}

.product-card {
  background-color: var(--color-bg-card);
  border: 3px solid var(--color-ink);
  border-radius: var(--radius-card);
  padding: var(--space-sm);
  text-decoration: none;
  color: var(--color-ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  box-shadow: 5px 5px 0 var(--color-ink);
  rotate: -1deg;
  transition: transform var(--transition-medium),
              box-shadow var(--transition-medium),
              rotate var(--transition-medium);
}

.product-grid .product-card:nth-child(even) {
  rotate: 1deg;
}

.product-card:hover,
.product-card:focus {
  rotate: 0deg;
}

.product-card:not(.product-card--static):hover,
.product-card:not(.product-card--static):focus {
  cursor: pointer;
  transform: translateY(-6px);
  box-shadow: 8px 10px 0 var(--color-ink);
}

.product-card__title {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 1.05rem;
  text-align: center;
}

.product-card__title small {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  text-transform: none;
  font-size: 0.7rem;
  color: var(--color-ink-soft);
  margin-top: 0.25rem;
  letter-spacing: normal;
}

/* Contenedor de imagen con intercambio en hover mediante crossfade CSS puro */
.product-card__media {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: calc(var(--radius-card) - 6px);
  background-color: var(--color-white);
}

.product-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity var(--transition-medium);
}

.product-card__media .img-hover {
  opacity: 0;
}

.product-card:hover .img-default,
.product-card:focus .img-default {
  opacity: 0;
}

.product-card:hover .img-hover,
.product-card:focus .img-hover {
  opacity: 1;
}


/* ------------------------------------------------------------
   9. SECCIÓN DE CONTACTO
   ------------------------------------------------------------ */
.contact-section {
  background-color: var(--color-header);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  margin: 0 calc(-1 * var(--space-md));
}

.contact-section p {
  max-width: 640px;
  margin: 0 auto;
}

.contact-section a {
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.contact-section a:hover,
.contact-section a:focus {
  color: var(--color-white);
}


/* ------------------------------------------------------------
   10. GALERÍAS (pegatinas / fanzines)
   ------------------------------------------------------------ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-sm);
  padding-bottom: var(--space-lg);
}

.gallery-grid img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background-color: var(--color-white);
  border: 3px solid var(--color-ink);
  border-radius: 10px;
  box-shadow: 4px 4px 0 var(--color-ink);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.gallery-grid img:hover,
.gallery-grid img:focus {
  cursor: pointer;
  transform: translateY(-4px) scale(1.02);
  box-shadow: 6px 6px 0 var(--color-ink);
}

/* Numeración "n/total" sobre cada página del fanzine */
.fanzine-page {
  position: relative;
}

.fanzine-page__badge {
  position: absolute;
  top: 0.4rem;
  left: 0.4rem;
  background-color: var(--color-accent);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 2px solid var(--color-ink);
  z-index: 1;
}

.print-page {
  position: relative;
}

.print__badge {
  position: absolute;
  top: 0.4rem;
  left: 0.4rem;
  background-color: var(--color-accent);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 2px solid var(--color-ink);
  z-index: 1;
}


/* ------------------------------------------------------------
   11. VÍDEO DESTACADO (fanzines)
   ------------------------------------------------------------ */
.featured-video {
  max-width: 720px;
  width: 100%;
  margin: var(--space-sm) auto var(--space-lg);
  border: 4px solid var(--color-ink);
  border-radius: 14px;
  box-shadow: 6px 6px 0 var(--color-ink);
  background-color: #000;
}


/* ------------------------------------------------------------
   12. OTRAS ACTIVIDADES
   ------------------------------------------------------------ */
.caricaturas-row {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  padding-bottom: var(--space-md);
  margin-top: -0.5 rem;
  scroll-snap-type: x proximity;
}

.caricaturas-row img {
  flex: 0 0 200px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  background-color: var(--color-white);
  border: 3px solid var(--color-ink);
  border-radius: 10px;
  box-shadow: 4px 4px 0 var(--color-ink);
  scroll-snap-align: start;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.caricaturas-row img:hover,
.caricaturas-row img:focus {
  cursor: pointer;
  transform: translateY(-4px);
  box-shadow: 6px 6px 0 var(--color-ink);
}

.tablon-image {
  max-width: 720px;
  width: 100%;
  margin: 0 auto var(--space-lg);
  border: 4px solid var(--color-ink);
  border-radius: 14px;
  box-shadow: 6px 6px 0 var(--color-ink);
}


/* ------------------------------------------------------------
   13. CAJAS "PRÓXIMAMENTE"
   ------------------------------------------------------------ */
.coming-soon-box {
  border: 2px dashed var(--color-accent-2);
  border-radius: 10px;
  padding: var(--space-sm);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent-2);
  text-align: center;
  width: 100%;
}

.coming-soon-box--center {
  max-width: 480px;
  margin: 0 auto var(--space-lg);
}


/* ------------------------------------------------------------
   14. RESPONSIVE
   ------------------------------------------------------------ */
@media (max-width: 640px) {
  :root {
    --header-height: 76px;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .btn-back {
    font-size: 0.75rem;
    padding: 0.4rem 0.7rem;
  }

  .section-title {
    font-size: 1.4rem;
  }
}


/* ------------------------------------------------------------
   15. MOVIMIENTO REDUCIDO
   Respeta la preferencia del sistema del usuario.
   ------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
    animation: none !important;
  }
}