:root {
  --bg-main: #0b0d12;
  --bg-alt: #0f1118;
  --card-bg: rgba(17, 20, 29, 0.96);
  --chip-bg: rgba(31, 36, 49, 0.72);

  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --border-soft: rgba(148, 163, 184, 0.25);

  --accent-magenta: #f472b6;
  --accent-green: #34d399;

  --elevated-shadow: 0 25px 40px rgba(0, 0, 0, 0.4);
}

/* RESET / BASE */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial,
    sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}


/* Menú móvil */
.mobile-menu {
  display: none;
}

/* SECCIONES BASE */
.section {
  padding: 3.5rem 1rem;
}

.section--alt {
  background: var(--bg-alt);
}

.section__inner {
  max-width: 1050px;
  margin: 0 auto;
}

.section__header {
  margin-bottom: 1.2rem;
}



.section__title {
  margin: 0.35rem 0 0.2rem;
  font-size: 1.35rem;
}

/* HERO BLOG */
.page-hero {
  padding: 4.5rem 1rem 2.5rem;
}

.page-hero__inner {
  max-width: 900px;
  margin: 0 auto;
}

.page-hero__badge {
  display: inline-block;
  padding: 0.25rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(244, 114, 182, 0.7);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-magenta);
  margin-bottom: 0.9rem;
}

.page-hero__title {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.3;
}

.page-hero__title span {
  display: block;
}

.page-hero__text {
  margin: 0.9rem 0 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.page-hero__tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.page-hero__tags span {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  padding: 0.35rem 0.8rem;
  background: var(--chip-bg);
}

/* CONTROLES BLOG */
.blog-controls {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.blog-controls__label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.blog-controls__search {
  max-width: 520px;
}

.blog-search {
  position: relative;
  display: flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: var(--chip-bg);
  padding: 0.25rem 0.7rem 0.25rem 0.9rem;
}

.blog-search__icon {
  font-size: 0.9rem;
  margin-right: 0.4rem;
  opacity: 0.85;
}

.blog-search__input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: var(--text-main);
  font-size: 0.9rem;
}

.blog-search__input::placeholder {
  color: rgba(148, 163, 184, 0.9);
  font-size: 0.85rem;
}

.blog-controls__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: flex-end;
}

.blog-filter {
  min-width: 130px;
}

.blog-filter__select {
  width: 100%;
  border-radius: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: var(--chip-bg);
  color: var(--text-main);
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
}

.blog-filter--tags {
  flex: 1;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.15rem;
}

.tag-chip {
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: var(--chip-bg);
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease,
    transform 0.12s ease;
}

.tag-chip--active {
  border-color: rgba(244, 114, 182, 0.9);
  box-shadow: 0 4px 12px rgba(244, 114, 182, 0.3);
  color: #f9fafb;
  background: rgba(24, 24, 44, 0.9);
  transform: translateY(-1px);
}

/* MENSAJE SIN RESULTADOS */
.blog-empty {
  margin-bottom: 1.2rem;
  border-radius: 1rem;
  border: 1px dashed rgba(148, 163, 184, 0.6);
  background: var(--chip-bg);
  padding: 0.9rem 0.9rem;
}

.blog-empty__title {
  margin: 0 0 0.2rem;
  font-size: 0.95rem;
}

.blog-empty__text {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* GRID DE CARDS */
.blog-grid {
  display: grid;
  gap: 1.2rem;
}

.blog-card {
  border-radius: 1.6rem;
  border: 1px solid var(--border-soft);
  background: var(--card-bg);
  overflow: hidden;
  box-shadow: var(--elevated-shadow);
  transition: transform 0.16s ease, box-shadow 0.16s ease,
    border-color 0.16s ease, opacity 0.18s ease;
  opacity: 0.96;
}

.blog-card__thumb {
  height: 170px;
  overflow: hidden;
  background: linear-gradient(
    to bottom right,
    rgba(236, 72, 153, 0.14),
    rgba(56, 189, 248, 0.12)
  );
}

.blog-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.02);
}



.blog-card {
  content-visibility: auto;
  contain-intrinsic-size: 320px; /* aprox alto card */
}


.blog-card--visible {
  animation: blogCardIn 0.25s ease-out;
}

@keyframes blogCardIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.blog-card__link {
  display: block;
  height: 100%;
}

.blog-card__thumb {
  height: 170px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-position-x: center;
  background-position-y: center;
}

/* Puedes cambiar estas imágenes luego por las tuyas */

.blog-card__thumb--one {
 background-image: url(/img/como-estructuro-un-proyecto-frontend-desde-cero.png);
}
.blog-card__thumb--two {
 background-image: url(/img/como-organizo-mis-carpetas-y-archivos-en-un-proyecto-frontend.png);
}

.blog-card__thumb--three {
 background-image: url(/img/por-que-uso-astro-para-mis-proyectos-frontend.png);
}

.blog-card__thumb--four {
 background-image: url(/img/HTML-no-es-solo-estructura-por-que-la-semantica-importa-de-verdad.png);
}

.blog-card__thumb--five {
 background-image: url(/img/por-que-copiar-codigo-no-te-hace-mejor-desarrollador.png);
}

.blog-card__thumb--six {
 background-image: url(/img/javascript-sin-frustrarte.png);
}

.blog-card__thumb--seven {
 background-image: url(/img/las-pequeñas-decisiones-que-hacen-que-una-web-se-sienta-profesional.png);
}



.blog-card__body {
  padding: 1rem 1.1rem 1.1rem;
}

.blog-card__meta {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.blog-card__tag {
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  font-size: 0.75rem;
}

.blog-card__title {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
}

.blog-card__excerpt {
  margin: 0 0 0.7rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.blog-card__tagsline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.78rem;
  color:#f472b6;
  margin-bottom: 0.65rem;
  text-shadow: 0 1px 2px #f472b6;
}

.blog-card__tagsline span {
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
}

.blog-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.blog-card__cta {
  font-weight: 500;
  color: var(--accent-magenta);
}

.blog-card:hover {
  transform: translateY(-4px);
  border-color: rgba(244, 114, 182, 0.75);
  box-shadow: 0 26px 45px rgba(0, 0, 0, 0.5);
  opacity: 1;
}


/* RESPONSIVE */
@media (max-width: 820px) {
  .nav__links,
  .nav__cta {
    display: none;
  }


  .mobile-menu {
    display: block;
  }

  .blog-controls {
    grid-template-columns: 1fr;
  }

  .blog-controls__filters {
    flex-direction: column;
    align-items: stretch;
  }

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

@media (min-width: 821px) {
  .blog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}


.blog-loadmore {
  margin-top: 1.2rem;
  text-align: center;
}

.btn-loadmore {
  border-radius: 999px;
  border: 1px solid rgba(244, 114, 182, 0.75);
  background: rgba(24, 24, 44, 0.9);
  color: #f9fafb;
  padding: 0.45rem 1.2rem;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.18s ease, transform 0.18s ease,
    border-color 0.18s ease;
}

.btn-loadmore:hover {
  background: rgba(36, 36, 60, 0.9);
  transform: translateY(-2px);
}

.btn-loadmore:disabled {
  opacity: 0.55;
  cursor: default;
}


/* Botón "Volver arriba" */ 

.back-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 60;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(244, 114, 182, 0.85);
  background: radial-gradient(circle at 30% 0, #f9a8d4, #db2777);
  color: #f9fafb;
  font-size: 1.2rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 18px 35px rgba(0, 0, 0, 0.55);
  cursor: pointer;

  opacity: 0;
  transform: translateY(12px) scale(0.95);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.back-to-top:hover {
  transform: translateY(-2px) scale(1.02);
}


/*//

/* Rendimiento: el browser se prepara para animar */
.blog-card {
  will-change: transform, opacity;
  contain: content;
}

/* Estado "oculto" sin tocar inline styles */
.blog-card.is-hidden {
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
}

/* Animación SOLO cuando entra (se aplica al mostrar) */
.blog-card.is-enter {
  animation: blogCardIn 260ms ease-out both;
}

/* Accesibilidad: si el usuario no quiere animaciones */
@media (prefers-reduced-motion: reduce) {
  .blog-card.is-enter {
    animation: none !important;
  }
  .back-to-top,
  .btn-loadmore,
  .tag-chip {
    transition: none !important;
  }
}