/* =====================================================================
   raiknd — Estilos principales
   "Arcade Espacial Atari" — galaxia azul oscuro, neón, scanlines CRT.
   Los tokens se cargan vía <link> separado (tokens.css) en el header.
   ===================================================================== */

/* ---------------------------------------------------------------------
   Base — Fondo galaxia estrellado
   --------------------------------------------------------------------- */
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  /* Fondo galaxia: estrellas dispersas + nebulosa sutil */
  background-image:
    /* Nebulosa magenta sutil */
    radial-gradient(ellipse 60% 40% at 15% 20%, rgba(255, 45, 191, 0.08), transparent 70%),
    /* Nebulosa cian sutil */
    radial-gradient(ellipse 50% 35% at 85% 75%, rgba(0, 229, 255, 0.06), transparent 70%),
    /* Estrellas brillantes (2px) */
    radial-gradient(2px 2px at 12% 18%, var(--color-star), transparent),
    radial-gradient(2px 2px at 78% 42%, var(--color-star), transparent),
    radial-gradient(2px 2px at 33% 88%, var(--color-star), transparent),
    radial-gradient(2px 2px at 92% 12%, var(--color-star), transparent),
    radial-gradient(2px 2px at 55% 65%, var(--color-star), transparent),
    /* Estrellas medianas (1.5px) */
    radial-gradient(1.5px 1.5px at 25% 55%, var(--color-star), transparent),
    radial-gradient(1.5px 1.5px at 68% 28%, var(--color-star), transparent),
    radial-gradient(1.5px 1.5px at 45% 15%, var(--color-star), transparent),
    radial-gradient(1.5px 1.5px at 82% 82%, var(--color-star), transparent),
    radial-gradient(1.5px 1.5px at 8% 72%, var(--color-star), transparent),
    /* Estrellas tenues (1px) */
    radial-gradient(1px 1px at 40% 40%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 62% 52%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 18% 85%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 88% 58%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 50% 30%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 72% 95%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 5% 45%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 95% 35%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 38% 72%, var(--color-star-dim), transparent),
    radial-gradient(1px 1px at 60% 8%, var(--color-star-dim), transparent);
  background-attachment: fixed;
  background-size: 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%,
    100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%,
    100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 100% 100%,
    100% 100%, 100% 100%, 100% 100%, 100% 100%;
  letter-spacing: var(--tracking-normal);
}

/* Capa de estrellas secundaria con parpadeo (twinkle) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at 22% 12%, var(--color-star), transparent),
    radial-gradient(1px 1px at 48% 78%, var(--color-star), transparent),
    radial-gradient(1px 1px at 75% 38%, var(--color-star), transparent),
    radial-gradient(1px 1px at 15% 62%, var(--color-star), transparent),
    radial-gradient(1px 1px at 85% 68%, var(--color-star), transparent),
    radial-gradient(1px 1px at 35% 25%, var(--color-star), transparent),
    radial-gradient(1px 1px at 65% 88%, var(--color-star), transparent),
    radial-gradient(1px 1px at 5% 30%, var(--color-star), transparent);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  animation: star-twinkle 4s ease-in-out infinite;
}

/* Scanlines CRT — pseudo-elemento fijo sobre todo */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-overlay);
  opacity: 0.35;
  background: repeating-linear-gradient(
    0deg,
    var(--scanline-color) 0px,
    transparent 1px,
    transparent 3px,
    var(--scanline-color) 4px
  );
  animation: flicker 8s steps(1, end) infinite;
}

/* Contenedor central */
.container {
  width: 100%;
  max-width: min(1100px, 92%);
  margin-inline: auto;
  padding-inline: var(--space-4);
  position: relative;
  z-index: var(--z-base);
}

/* Skip link accesible */
.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -100%;
  z-index: var(--z-modal);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  border: var(--border-md) solid var(--color-primary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-primary);
  transition: top var(--transition-base);
}
.skip-link:focus {
  top: var(--space-2);
  color: var(--color-bg);
}

/* ---------------------------------------------------------------------
   Header sticky arcade
   --------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(10, 10, 26, 0.72);
  border-bottom: var(--border-md) solid var(--color-primary);
  box-shadow: 0 2px 12px rgba(0, 229, 255, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: clamp(56px, 12vw, 64px);
  padding-block: var(--space-2);
}

.site-header__logo {
  display: block;
  flex-shrink: 0;
}
.site-header__logo img {
  height: clamp(28px, 8vw, 40px);
  width: auto;
  filter: drop-shadow(0 0 8px var(--color-primary));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.site-nav a {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  padding: var(--space-2) var(--space-3);
  color: var(--color-primary);
  border: var(--border-md) solid transparent;
  border-radius: var(--radius-none);
  text-shadow: var(--glow-text);
  transition: color var(--transition-fast), border-color var(--transition-fast),
              box-shadow var(--transition-fast), transform var(--transition-fast);
}
.site-nav a:hover {
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
  transform: translate(-1px, -1px);
}
.site-nav a:active {
  transform: translate(0, 1px);
  box-shadow: none;
}

/* ---------------------------------------------------------------------
   Hero arcade
   --------------------------------------------------------------------- */
.hero {
  padding-block: clamp(2rem, 8vw, 4rem) clamp(1.5rem, 6vw, 3rem);
  text-align: center;
  border-bottom: var(--border-thin) solid var(--color-primary);
  box-shadow: 0 2px 12px rgba(0, 229, 255, 0.15);
  margin-bottom: var(--space-7);
}

.hero__logo {
  width: min(320px, 90%);
  max-width: 80vw;
  margin: 0 auto var(--space-4);
  filter: drop-shadow(0 0 16px var(--color-primary)) drop-shadow(0 0 32px var(--color-primary));
}

.hero__tagline {
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  color: var(--color-primary);
  text-shadow: var(--glow-text);
  letter-spacing: var(--tracking-mono);
  margin-bottom: var(--space-5);
}

/* Badge "online" verde fósforo parpadeante */
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.badge-online {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  color: var(--color-secondary);
  background: rgba(51, 255, 102, 0.08);
  border: var(--border-md) solid var(--color-secondary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-secondary);
  text-shadow: var(--glow-text);
  animation: blink 1.4s ease-in-out infinite;
}
.badge-online::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--color-secondary);
  border-radius: 50%;
  box-shadow: 0 0 8px 2px var(--color-secondary);
  animation: blink 1.4s ease-in-out infinite;
}

/* Visitor counter retro (verde fósforo sobre negro) */
.visitor-counter {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-mono);
  color: var(--color-text-muted);
}
.visitor-counter__label {
  text-transform: uppercase;
}
.visitor-counter__digits {
  display: inline-flex;
  gap: 2px;
  padding: var(--space-1) var(--space-2);
  background: var(--counter-digit-bg);
  border: var(--border-md) solid var(--color-secondary);
  border-radius: var(--radius-none);
  box-shadow: 0 0 8px rgba(51, 255, 102, 0.4);
}
.visitor-counter__digit {
  display: inline-block;
  min-width: 0.7em;
  text-align: center;
  color: var(--counter-digit-color);
  font-weight: var(--fw-bold);
  text-shadow: 0 0 6px var(--color-secondary);
}

/* ---------------------------------------------------------------------
   Sección "sobre esto"
   --------------------------------------------------------------------- */
.about {
  max-width: min(720px, 100%);
  margin: 0 auto var(--space-8);
  padding: clamp(1rem, 5vw, 2rem);
  background: var(--color-bg-alt);
  border: var(--border-md) solid var(--color-primary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-primary);
}
.about__title {
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  text-shadow: var(--glow-text);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.about__title::before {
  content: ">";
  color: var(--color-accent);
  text-shadow: var(--glow-accent);
  font-weight: var(--fw-bold);
}
.about__text {
  font-size: var(--fs-base);
  line-height: var(--lh-loose);
  color: var(--color-text);
}
.about__text strong {
  color: var(--color-accent);
  font-weight: var(--fw-semibold);
  text-shadow: var(--glow-text);
}

/* ---------------------------------------------------------------------
   Sección proyectos — cabecera + filtro
   --------------------------------------------------------------------- */
.projects-section {
  margin-bottom: var(--space-8);
}
.projects-section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}
.projects-section__title {
  font-family: var(--font-mono), "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  text-shadow: var(--glow-text);
  word-break: break-all;
  overflow-wrap: break-word;
  hyphens: none;
}
.projects-section__count {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-mono);
}

/* Filtro por año — chips arcade */
.year-filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.year-chip {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  padding: var(--space-1) var(--space-3);
  background: transparent;
  color: var(--color-primary);
  border: var(--border-md) solid var(--color-primary);
  border-radius: var(--radius-none);
  cursor: pointer;
  text-shadow: var(--glow-text);
  transition: background var(--transition-fast), color var(--transition-fast),
              border-color var(--transition-fast), transform var(--transition-fast),
              box-shadow var(--transition-fast);
}
.year-chip:hover {
  box-shadow: var(--glow-primary);
  transform: translate(-1px, -1px);
}
.year-chip[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary);
  text-shadow: none;
}
.year-chip:active {
  transform: translate(0, 1px);
  box-shadow: none;
}

/* ---------------------------------------------------------------------
   Grid de proyectos
   --------------------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: var(--space-5);
}

/* ---------------------------------------------------------------------
   Card de proyecto arcade
   --------------------------------------------------------------------- */
.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-alt);
  border: var(--border-md) solid var(--color-primary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-primary);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
  /* fade-in base (oculto hasta IntersectionObserver) */
  opacity: 0;
  transform: translateY(12px);
}
.project-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.project-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--glow-primary), 0 0 30px var(--color-primary);
}

/* Estrella de destacado — amarillo ámbar con glow */
.project-card__featured {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  z-index: 2;
  width: clamp(18px, 5vw, 22px);
  height: clamp(18px, 5vw, 22px);
  filter: drop-shadow(0 0 6px var(--color-accent)) drop-shadow(0 0 12px var(--color-accent));
}

/* Thumbnail con color de cubierta + scanlines + borde cian */
.project-card__thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: var(--border-md) solid var(--color-primary);
  overflow: hidden;
}
.project-card__thumb::after {
  /* Scanlines CRT sobre thumbnail */
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    var(--scanline-color) 0px,
    transparent 1px,
    transparent 3px,
    var(--scanline-color) 4px
  );
  pointer-events: none;
  opacity: 0.5;
}
.project-card__thumb img {
  width: clamp(32px, 10vw, 48px);
  height: clamp(32px, 10vw, 48px);
  opacity: 0.95;
  filter: drop-shadow(0 0 8px var(--color-primary));
}

/* Cuerpo de la card */
.project-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  flex: 1;
}
.project-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.project-card__title {
  font-family: var(--font-mono), "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  text-shadow: var(--glow-text);
  line-height: var(--lh-snug);
  word-break: break-all;
  overflow-wrap: break-word;
  flex: 1 1 100%;
  min-width: 0;
}

/* Año como badge arcade — amarillo ámbar, texto negro, sin radius */
.year-badge {
  flex: 0 0 auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  padding: var(--space-1) var(--space-2);
  color: #000;
  background: var(--color-accent);
  border: var(--border-thin) solid var(--color-accent);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-accent);
}

/* Descripción */
.project-card__desc {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
  color: var(--color-text-muted);
  flex: 1;
}

/* Tags de tech stack — borde cian, texto cian, fondo transparente, mono */
.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-1);
}
.tag {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-mono);
  padding: 2px var(--space-2);
  background: transparent;
  color: var(--color-primary);
  border: var(--border-thin) solid var(--color-primary);
  border-radius: var(--radius-none);
  text-shadow: var(--glow-text);
}

/* Link "visitar →" — botón arcade con glow neón */
.project-card__visit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  background: transparent;
  border: var(--border-md) solid var(--color-primary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-primary);
  text-shadow: var(--glow-text);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              background var(--transition-fast), color var(--transition-fast);
  align-self: flex-start;
}
.project-card__visit:hover {
  background: var(--color-primary);
  color: var(--color-bg);
  box-shadow: 0 0 20px var(--color-primary);
  transform: translate(-1px, -1px);
  text-shadow: none;
}
.project-card__visit:active {
  transform: translate(0, 2px);
  box-shadow: var(--glow-primary);
}
.project-card__visit img {
  width: clamp(12px, 3vw, 14px);
  height: clamp(12px, 3vw, 14px);
}

/* ---------------------------------------------------------------------
   Skeleton loaders
   --------------------------------------------------------------------- */
.skeleton-card {
  background: var(--color-bg-alt);
  border: var(--border-md) solid var(--color-primary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-primary);
  overflow: hidden;
}
.skeleton-card__thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(
    90deg,
    var(--color-bg-alt) 0%,
    rgba(0, 229, 255, 0.15) 50%,
    var(--color-bg-alt) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite linear;
}
.skeleton-card__body {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.skeleton-line {
  height: 12px;
  border-radius: var(--radius-none);
  background: linear-gradient(
    90deg,
    var(--color-bg-alt) 0%,
    rgba(0, 229, 255, 0.15) 50%,
    var(--color-bg-alt) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite linear;
}
.skeleton-line--title { height: 18px; width: 70%; }
.skeleton-line--tag  { height: 10px; width: 40%; margin-top: var(--space-2); }
.skeleton-line--desc { height: 10px; width: 95%; }
.skeleton-line--desc2 { height: 10px; width: 80%; }

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------------------------------------------------------------------
   Estados: error / vacío
   --------------------------------------------------------------------- */
.projects-status {
  grid-column: 1 / -1;
  padding: var(--space-6);
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  border: var(--border-md) dashed var(--color-primary);
  border-radius: var(--radius-none);
  background: var(--color-bg-alt);
  color: var(--color-primary);
  text-shadow: var(--glow-text);
}
.projects-status--error {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
  box-shadow: var(--glow-secondary);
}
.projects-status--empty {
  color: var(--color-text-muted);
}
.projects-status code {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------
   Footer + Marquee
   --------------------------------------------------------------------- */
.site-footer {
  margin-top: var(--space-9);
  border-top: var(--border-md) solid var(--color-primary);
  box-shadow: 0 -2px 12px rgba(0, 229, 255, 0.2);
  background: var(--color-bg);
}
.marquee {
  overflow: hidden;
  white-space: nowrap;
  border-bottom: var(--border-thin) solid var(--color-primary);
  background: var(--color-bg-alt);
}
.marquee__track {
  display: inline-block;
  padding-inline: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-mono);
  color: var(--color-primary);
  text-transform: uppercase;
  text-shadow: var(--glow-text);
  animation: marquee var(--marquee-speed) linear infinite;
  will-change: transform;
}
.marquee__track span {
  margin-inline: var(--space-4);
}
.marquee__track .sep {
  color: var(--color-accent);
  text-shadow: var(--glow-accent);
}
@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-mono);
  color: var(--color-text-muted);
}
.site-footer__copy a {
  color: var(--color-primary);
  border-bottom: var(--border-thin) solid var(--color-primary);
  text-shadow: var(--glow-text);
}
.site-footer__copy a:hover {
  background: rgba(0, 229, 255, 0.12);
  box-shadow: var(--glow-primary);
}
.site-footer__made {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
/* Pixel-heart con glow magenta */
.site-footer__made img {
  width: clamp(12px, 3vw, 14px);
  height: clamp(12px, 3vw, 14px);
  filter: drop-shadow(0 0 6px var(--color-pink)) drop-shadow(0 0 12px var(--color-pink));
}

/* ---------------------------------------------------------------------
   Animaciones arcade
   --------------------------------------------------------------------- */

/* Blink — badge online (opacidad 1 → 0.3 → 1) */
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Glow-pulse — botones/cards (box-shadow intenso → suave → intenso) */
@keyframes glow-pulse {
  0%, 100% { box-shadow: var(--glow-primary); }
  50% { box-shadow: 0 0 20px var(--color-primary), 0 0 40px var(--color-primary); }
}

/* Flicker — parpadeo CRT sutil ocasional */
@keyframes flicker {
  0%, 96%, 100% { opacity: 0.35; }
  97% { opacity: 0.5; }
  98% { opacity: 0.25; }
  99% { opacity: 0.45; }
}

/* Star-twinkle — estrellas del fondo (opacidad variante) */
@keyframes star-twinkle {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ---------------------------------------------------------------------
   Scrollbar arcade
   --------------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 12px;
  background: var(--color-bg);
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
  border-left: var(--border-thin) solid var(--color-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-none);
  box-shadow: var(--glow-primary);
}
::-webkit-scrollbar-thumb:hover {
  box-shadow: 0 0 20px var(--color-primary);
}

/* Firefox */
* {
  scrollbar-color: var(--color-primary) var(--color-bg);
  scrollbar-width: thin;
}

/* ---------------------------------------------------------------------
   Utilidades
   --------------------------------------------------------------------- */
.is-hidden { display: none !important; }

/* Ajuste de foco en cards interactivas */
.project-card:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary), 0 0 30px var(--color-primary), var(--focus-ring);
}

/* ---------------------------------------------------------------------
   Ajustes finos para móvil muy estrecho
   --------------------------------------------------------------------- */
@media (max-width: 480px) {
  .site-header__inner {
    gap: var(--space-2);
  }
  .site-nav {
    gap: var(--space-1);
  }
  .site-nav a {
    padding: var(--space-1) var(--space-2);
  }
  .hero__badges {
    gap: var(--space-2);
  }
  .project-card__body {
    padding: var(--space-3);
  }
  .project-card__title {
    font-size: var(--fs-xs);
    letter-spacing: 0.03em;
  }
  .project-card__head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
  .project-card__title {
    flex: 0 0 auto;
  }
  /* Título de sección: ruta de carpeta más pequeña en móvil */
  .projects-section__title {
    font-size: var(--fs-md);
    letter-spacing: 0.04em;
  }
  /* Head de sección: apilar verticalmente en móvil */
  .projects-section__head {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
  /* Filtro de años: chips más compactos */
  .year-filter {
    gap: var(--space-1);
    margin-bottom: var(--space-4);
  }
  .year-chip {
    padding: var(--space-1) var(--space-2);
    font-size: var(--fs-xs);
  }
}

/* Ajustes para tablets pequeñas (481px - 768px) */
@media (max-width: 768px) {
  .projects-section__title {
    font-size: var(--fs-lg);
  }
}

/* ---------------------------------------------------------------------
   PRELOADER ARCADE
   --------------------------------------------------------------------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s;
}
.preloader--hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.preloader__logo {
  margin-bottom: var(--space-6);
}
.preloader__text {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
  text-shadow: 0 0 20px var(--color-primary), 0 0 40px var(--color-primary);
  letter-spacing: var(--tracking-mono);
  animation: preloader-pulse 1.5s ease-in-out infinite;
}
.preloader__bar {
  width: min(280px, 80vw);
  height: 4px;
  background: rgba(0, 229, 255, 0.15);
  border: 1px solid var(--color-primary);
  overflow: hidden;
}
.preloader__bar-fill {
  height: 100%;
  width: 0;
  background: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary);
}
.preloader__percent {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-md);
  font-weight: var(--fw-bold);
  color: var(--color-accent);
  text-shadow: var(--glow-accent);
  letter-spacing: var(--tracking-mono);
  min-width: 4ch;
  text-align: center;
}
.preloader__msg {
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  animation: blink 1s step-end infinite;
}

@keyframes preloader-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.95); }
}
@keyframes preloader-load {
  0% { width: 0; }
  100% { width: 100%; }
}

/* ---------------------------------------------------------------------
   ENTRADA ESCALONADA (staggered entrance)
   --------------------------------------------------------------------- */
.animate-in {
  opacity: 0;
  transform: translateY(60px) scale(0.95);
  filter: blur(6px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              filter 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.is-loaded .animate-in {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

/* Hero: deslizamiento más dramático desde abajo */
.hero.animate-in {
  transform: translateY(100px) scale(0.9);
}
.is-loaded .hero.animate-in {
  transform: translateY(0) scale(1);
}

/* Header: se desliza desde arriba */
.site-header.animate-in {
  transform: translateY(-100%);
}
.is-loaded .site-header.animate-in {
  transform: translateY(0);
}

/* Footer: se desliza desde abajo */
.site-footer.animate-in {
  transform: translateY(100%);
}
.is-loaded .site-footer.animate-in {
  transform: translateY(0);
}

/* ---------------------------------------------------------------------
   NEBULOSA DRIFT — capa dedicada (evita conflicto con background-attachment: fixed del body)
   --------------------------------------------------------------------- */
.nebula-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(ellipse 60% 40% at 15% 20%, rgba(255, 45, 191, 0.08), transparent 70%),
    radial-gradient(ellipse 50% 35% at 85% 75%, rgba(0, 229, 255, 0.06), transparent 70%);
  background-size: 100% 100%, 100% 100%;
  background-repeat: no-repeat;
  animation: nebula-drift 60s ease-in-out infinite;
}
@keyframes nebula-drift {
  0%, 100% { background-position: 0% 0%, 100% 100%; }
  50% { background-position: 5% 3%, 95% 97%; }
}

/* ---------------------------------------------------------------------
   CAPA ADICIONAL DE ESTRELLAS (parpadeo variado)
   --------------------------------------------------------------------- */
.star-layer-2 {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1px 1px at 10% 10%, var(--color-star), transparent),
    radial-gradient(1px 1px at 30% 40%, var(--color-star), transparent),
    radial-gradient(1px 1px at 50% 20%, var(--color-star), transparent),
    radial-gradient(1px 1px at 70% 60%, var(--color-star), transparent),
    radial-gradient(1px 1px at 90% 30%, var(--color-star), transparent),
    radial-gradient(1px 1px at 15% 75%, var(--color-star), transparent),
    radial-gradient(1px 1px at 35% 85%, var(--color-star), transparent),
    radial-gradient(1px 1px at 55% 50%, var(--color-star), transparent),
    radial-gradient(1px 1px at 75% 15%, var(--color-star), transparent),
    radial-gradient(1px 1px at 85% 90%, var(--color-star), transparent);
  background-size: 100% 100%;
  background-repeat: no-repeat;
  animation: star-twinkle 5s ease-in-out infinite;
  animation-delay: 2s;
}

/* ---------------------------------------------------------------------
   ESTRELLAS FUGACES (shooting stars)
   --------------------------------------------------------------------- */
.shooting-stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}
.shooting-star {
  position: absolute;
  width: 2px;
  height: 2px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 6px #fff;
  opacity: 0;
}
.shooting-star::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.8), transparent);
  transform: translateX(-100px);
}
.shooting-star--1 {
  top: 10%;
  left: 100%;
  animation: shoot 8s ease-in 2s infinite;
}
.shooting-star--2 {
  top: 30%;
  left: 100%;
  animation: shoot 11s ease-in 5s infinite;
}
.shooting-star--3 {
  top: 60%;
  left: 100%;
  animation: shoot 9s ease-in 8s infinite;
}
.shooting-star--4 {
  top: 80%;
  left: 100%;
  animation: shoot 12s ease-in 0s infinite;
}
@keyframes shoot {
  0% { transform: translateX(0) translateY(0); opacity: 0; }
  5% { opacity: 1; }
  20% { opacity: 1; }
  30% { transform: translateX(-120vw) translateY(40vh); opacity: 0; }
  100% { transform: translateX(-120vw) translateY(40vh); opacity: 0; }
}

/* ---------------------------------------------------------------------
   MICROINTERACCIONES
   --------------------------------------------------------------------- */

/* C.1 Botones arcade pulse idle */
.project-card__visit {
  animation: btn-pulse 3s ease-in-out infinite;
}
@keyframes btn-pulse {
  0%, 100% { box-shadow: var(--glow-primary); }
  50% { box-shadow: 0 0 15px var(--color-primary), 0 0 25px rgba(0, 229, 255, 0.3); }
}

/* C.2 Nav links underline slide-in */
.site-nav a {
  position: relative;
}
.site-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary);
  transition: width 0.3s ease;
}
.site-nav a:hover::after {
  width: 100%;
}

/* C.3 Cards 3D tilt suave en hover */
.project-card {
  perspective: 1000px;
}
.project-card:hover {
  transform: translateY(-4px) rotateX(2deg);
  box-shadow: var(--glow-primary), 0 0 40px var(--color-primary), 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* C.4 Scrollbar glow pulse */
::-webkit-scrollbar-thumb {
  animation: scrollbar-glow 3s ease-in-out infinite;
}
@keyframes scrollbar-glow {
  0%, 100% { box-shadow: 0 0 6px var(--color-primary); }
  50% { box-shadow: 0 0 12px var(--color-primary), 0 0 20px var(--color-primary); }
}

/* C.5 Hero logo entrada con scale */
.hero__logo {
  animation: hero-logo-in 1s ease-out 0.5s both;
}
@keyframes hero-logo-in {
  0% { opacity: 0; transform: scale(0.5) rotate(-10deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

/* ---------------------------------------------------------------------
   MÓVIL — reducir intensidad de animaciones
   --------------------------------------------------------------------- */
@media (max-width: 768px) {
  /* Menos shooting stars en móvil */
  .shooting-star--3,
  .shooting-star--4 {
    display: none;
  }
  /* Sin 3D tilt en móvil (rendimiento) */
  .project-card:hover {
    transform: translate(-2px, -2px);
  }
  /* Sin pulse de botones en móvil (batería) */
  .project-card__visit {
    animation: none;
  }
  /* Sin scrollbar glow en móvil */
  ::-webkit-scrollbar-thumb {
    animation: none;
  }
}

/* ---------------------------------------------------------------------
   Respetar prefers-reduced-motion — desactivar todas las animaciones arcade
   --------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  body::before {
    animation: none;
  }
  body::after {
    animation: none;
  }
  .badge-online,
  .badge-online::before {
    animation: none;
  }
  /* Preloader: skip inmediato */
  .preloader {
    display: none !important;
  }
  /* Entrada escalonada: instantánea */
  .animate-in {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    transition: none !important;
  }
  .site-header.animate-in,
  .site-footer.animate-in,
  .hero.animate-in {
    transform: none !important;
  }
  /* Sin shooting stars */
  .shooting-stars {
    display: none !important;
  }
  /* Sin nebulosa drift */
  .nebula-layer {
    animation: none !important;
  }
  /* Sin capa de estrellas adicional */
  .star-layer-2 {
    animation: none !important;
  }
  /* Sin pulse de botones */
  .project-card__visit {
    animation: none !important;
  }
  /* Sin scrollbar glow */
  ::-webkit-scrollbar-thumb {
    animation: none !important;
  }
  /* Sin hero logo animation */
  .hero__logo {
    animation: none !important;
  }
}