/* ============================================================
   ENFERMERO.CL — blog.css (Especificidad)
   ============================================================ */

.container { max-width: 1400px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2.5rem); }
.container--md { max-width: 1200px; }
/* -- BLOG HERO BAR ---------------------------------------- */
    .blog-hero-bar {
      background: linear-gradient(135deg, var(--clr-navy-deep) 0%, var(--clr-navy-mid) 100%);
      padding: 3.5rem 0 2.5rem;
      position: relative;
      overflow: hidden;
    }
    .blog-hero-bar::after {
      content: '';
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(189,79,42,0.5), transparent);
    }
    .blog-hero-bar__inner { position: relative; z-index: 1; }
    .blog-hero-eyebrow {
      display: inline-flex; align-items: center; gap: 6px;
      font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
      text-transform: uppercase; color: var(--clr-coral-light);
      margin-bottom: 0.75rem;
    }
    .blog-hero-bar h1 {
      font-family: var(--font-display);
      font-size: clamp(1.75rem, 4vw, 2.75rem);
      font-weight: 700; letter-spacing: -0.035em; color: white;
      margin-bottom: 0.5rem; line-height: 1.15;
    }
    .blog-hero-bar p {
      font-size: 0.95rem; color: rgba(255,255,255,0.5);
    }

    /* -- FILTER BAR ------------------------------------------- */
    .filter-bar {
      background: var(--clr-white);
      border-bottom: 1px solid var(--clr-border);
      position: sticky;
      top: var(--header-h);
      z-index: 800;
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    }
    .filter-bar__inner {
      display: flex;
      align-items: center;
      gap: 4px;
      padding: 0.75rem 0;
      overflow-x: auto;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .filter-bar__inner::-webkit-scrollbar { display: none; }
    .filter-tag {
      display: inline-flex; align-items: center; gap: 5px;
      font-size: 0.8rem; font-weight: 600; white-space: nowrap;
      padding: 6px 14px; border-radius: 20px;
      border: 1.5px solid transparent;
      color: var(--clr-muted);
      background: transparent;
      cursor: pointer;
      transition: all var(--duration-fast);
      font-family: var(--font-body);
    }
    .filter-tag:hover { color: var(--clr-navy); border-color: var(--clr-border); background: var(--clr-surface); }
    .filter-tag.active { color: var(--clr-coral); border-color: rgba(189,79,42,0.3); background: rgba(189,79,42,0.06); }
    .filter-tag .count { font-size: 0.68rem; background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: 8px; padding: 1px 6px; color: var(--clr-muted); }
    .filter-tag.active .count { background: rgba(189,79,42,0.1); border-color: rgba(189,79,42,0.2); color: var(--clr-coral); }

    /* -- BLOG LAYOUT ------------------------------------------ */
    .blog-main {
      padding: 3rem 0 5rem;
    }

    /* GRID — adapts columns by viewport width */
    .posts-grid {
      display: grid;
      /* Responsive auto-fill: cabe más en 1920px que en 1280px */
      grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
      gap: 24px;
      margin-bottom: 3rem;
    }

    /* -- CARD — THE STAR COMPONENT ---------------------------- */
    .post-card {
      background: var(--clr-white);
      border: 1px solid var(--clr-border);
      border-radius: var(--radius-xl);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition:
        transform var(--duration-slow) var(--ease-out),
        box-shadow var(--duration-slow) var(--ease-out),
        border-color var(--duration-med);
      /* Scroll-triggered entry animation base state */
      opacity: 0;
      transform: translateY(36px) scale(0.97);
    }

    /* Visible state — triggered by IntersectionObserver */
    .post-card.card-visible {
      opacity: 1;
      transform: translateY(0) scale(1);
    }

    .post-card:hover {
      transform: translateY(-6px) scale(1.01);
      box-shadow: 0 20px 50px rgba(13,44,84,0.1), 0 6px 16px rgba(0,0,0,0.05);
      border-color: rgba(13,44,84,0.15);
    }

    /* Featured / hero card — spans 2 columns */
    .post-card--featured {
      grid-column: span 2;
    }

    .post-card--featured .card-image {
      height: 280px;
    }

    .post-card--featured .card-body {
      padding: 2rem;
    }

    .post-card--featured .card-title {
      font-size: 1.35rem;
    }

    /* Image area */
    .card-image {
      position: relative;
      height: 200px;
      background: linear-gradient(135deg, var(--clr-surface) 0%, #dde4ef 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
      flex-shrink: 0;
    }

    .card-image__emoji {
      font-size: 3rem;
      filter: grayscale(0.1);
      transition: transform var(--duration-med) var(--ease-spring);
    }

    .post-card:hover .card-image__emoji {
      transform: scale(1.15) rotate(-3deg);
    }

    /* Category badge overlay */
    .card-cat-badge {
      position: absolute;
      top: 14px; left: 14px;
      font-size: 0.65rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      padding: 4px 10px;
      border-radius: 20px;
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
    }

    .cat--ia      { background: rgba(29,111,164,0.9);  color: white; }
    .cat--apps    { background: rgba(13,44,84,0.9);    color: white; }
    .cat--sim     { background: rgba(189,79,42,0.9);   color: white; }
    .cat--trivia  { background: rgba(100,116,139,0.9); color: white; }
    .cat--bio     { background: rgba(22,163,74,0.85);  color: white; }

    /* Gradient overlay at bottom of image */
    .card-image::after {
      content: '';
      position: absolute;
      bottom: 0; left: 0; right: 0;
      height: 50%;
      background: linear-gradient(to top, rgba(248,250,252,0.6), transparent);
      pointer-events: none;
    }

    /* Reading time badge */
    .card-read-time {
      position: absolute;
      bottom: 12px; right: 12px;
      font-size: 0.65rem;
      font-weight: 700;
      color: var(--clr-muted);
      background: rgba(255,255,255,0.88);
      backdrop-filter: blur(8px);
      padding: 3px 8px;
      border-radius: 10px;
      border: 1px solid var(--clr-border);
    }

    /* Card body */
    .card-body {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      flex: 1;
      gap: 0.625rem;
    }

    .card-meta {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.75rem;
      color: var(--clr-muted);
    }

    .card-meta .dot {
      width: 3px; height: 3px;
      background: var(--clr-border);
      border-radius: 50%;
    }

    .card-title {
      font-family: var(--font-display);
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--clr-navy);
      line-height: 1.4;
      letter-spacing: -0.01em;
      transition: color var(--duration-fast);
      display: block;
    }

    .post-card:hover .card-title { color: var(--clr-coral); }

    .card-excerpt {
      font-size: 0.875rem;
      color: var(--clr-muted);
      line-height: 1.65;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex: 1;
    }

    .post-card--featured .card-excerpt {
      -webkit-line-clamp: 4;
    }

    .card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 1rem;
      margin-top: auto;
      border-top: 1px solid var(--clr-border);
    }

    .card-read-link {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--clr-navy);
      text-transform: uppercase;
      letter-spacing: 0.04em;
      transition: color var(--duration-fast), gap var(--duration-fast);
    }

    .card-read-link:hover { color: var(--clr-coral); gap: 9px; }

    .card-comment-count {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 0.78rem;
      color: var(--clr-muted);
    }

    /* -- MOBILE TIMELINE -------------------------------------- */
    /* On mobile, the posts are displayed in a single column with 
       a vertical line (timeline) to the left */
    @media (max-width: 767px) {
      .posts-grid {
        grid-template-columns: 1fr;
        gap: 0;
        position: relative;
        padding-left: 28px;
      }

      .posts-grid::before {
        content: '';
        position: absolute;
        left: 10px;
        top: 0; bottom: 0;
        width: 2px;
        background: linear-gradient(to bottom, var(--clr-coral), rgba(189,79,42,0.15));
        border-radius: 1px;
      }

      .post-card {
        margin-bottom: 24px;
        border-radius: var(--radius-lg);
        position: relative;
      }

      /* Timeline dot */
      .post-card::before {
        content: '';
        position: absolute;
        left: -23px;
        top: 24px;
        width: 12px; height: 12px;
        border-radius: 50%;
        background: var(--clr-coral);
        border: 2px solid var(--clr-white);
        box-shadow: 0 0 0 3px rgba(189,79,42,0.2);
        z-index: 1;
      }

      .post-card--featured {
        grid-column: span 1;
      }

      .post-card--featured .card-image { height: 180px; }
    }

    /* -- LOAD MORE BUTTON ------------------------------------- */
    .load-more-wrap {
      text-align: center;
      padding-top: 1rem;
    }

    .btn-load-more {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-body);
      font-weight: 700;
      font-size: 0.875rem;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--clr-navy);
      background: var(--clr-white);
      border: 2px solid var(--clr-navy);
      padding: 14px 36px;
      border-radius: 40px;
      cursor: pointer;
      transition: background var(--duration-fast), color var(--duration-fast), transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-med);
    }

    .btn-load-more:hover {
      background: var(--clr-navy);
      color: white;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(13,44,84,0.18);
    }

    .btn-load-more:active { transform: translateY(0); }

    .btn-load-more.loading { opacity: 0.6; cursor: not-allowed; }

    .btn-load-more .spinner {
      width: 14px; height: 14px;
      border: 2px solid currentColor;
      border-top-color: transparent;
      border-radius: 50%;
      animation: spin 0.7s linear infinite;
      display: none;
    }

    .btn-load-more.loading .spinner { display: inline-block; }
    .btn-load-more.loading .btn-label { opacity: 0.5; }

    @keyframes spin { to { transform: rotate(360deg); } }

    
/* -- RESPONSIVE ------------------------------------------- */
@media (max-width: 1100px) {
  .posts-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
  .post-card--featured { grid-column: span 2; }
}

@media (max-width: 768px) {
  .post-card--featured { grid-column: span 1; }
  .post-card--featured .card-image { height: 180px; }
}

@media (prefers-reduced-motion: reduce) {
  .post-card { opacity: 1; transform: none; }
}

/* -- CLAMP FEATURED ON SMALL GRIDS ----------------------- */
@media (max-width: 900px) and (min-width: 768px) {
  .post-card--featured { grid-column: span 1; }
  .post-card--featured .card-image { height: 200px; }
}