/* ================================================
   FLUENCY ENGLISH SCHOOL — Blog Page Styles
   Only blog-specific styles. Base comes from ../main.css
   ================================================ */

/* === BLOG HERO === */
.blog-hero {
  position: relative;
  background: linear-gradient(160deg, #0F0720 0%, #1A0B3E 40%, #2D1460 100%);
  color: #fff;
  padding: 8rem 0 4rem;
  overflow: hidden;
  text-align: center;
}
.blog-hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.blog-hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(107,70,193,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107,70,193,0.08) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 20%, transparent 70%);
}
.blog-hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(107,70,193,0.3), transparent 60%);
  top: -150px; right: -150px;
  border-radius: 50%; filter: blur(80px);
  animation: blog-float 10s ease-in-out infinite;
}
.blog-hero-glow--2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(139,92,246,0.15), transparent 60%);
  bottom: -100px; left: -80px; top: auto; right: auto;
  animation-delay: -5s;
}
@keyframes blog-float {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(20px,-15px) scale(1.05); }
}
.blog-hero-content { position: relative; z-index: 10; max-width: 750px; margin: 0 auto; }
.blog-hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12);
  padding: 0.45rem 1.2rem; border-radius: 999px;
  font-size: 0.82rem; font-weight: 500; letter-spacing: 0.04em;
  margin-bottom: 1.5rem; color: rgba(255,255,255,0.8);
}
.blog-hero-badge-dot {
  width: 7px; height: 7px; background: var(--gold);
  border-radius: 50%; animation: pulse 2s ease infinite;
}
.blog-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem,5vw,3.5rem);
  font-weight: 900; line-height: 1.1;
  margin-bottom: 1.2rem; letter-spacing: -0.025em;
}
.blog-hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--purple-light), var(--gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.blog-hero-sub {
  font-size: 1.1rem; color: rgba(255,255,255,0.65);
  max-width: 600px; margin: 0 auto; line-height: 1.7;
}

/* === FILTERS === */
.blog-filters {
  background: var(--surface);
  border-bottom: 1px solid var(--stroke);
  padding: 1.2rem 0;
  position: sticky; top: 68px; z-index: 100;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
.blog-filters .container {
  display: flex; align-items: center;
  justify-content: space-between; gap: 1rem;
}
.blog-filter-buttons { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.blog-filter-btn {
  display: inline-flex; align-items: center; gap: 0.35rem;
  background: var(--surface-alt); border: 1px solid var(--stroke);
  padding: 0.5rem 1.1rem; border-radius: 999px;
  font-family: var(--font-display); font-weight: 600; font-size: 0.85rem;
  color: var(--muted); cursor: pointer; transition: all 0.3s var(--ease);
}
.blog-filter-btn:hover {
  background: var(--purple-soft); border-color: var(--purple-muted);
  color: var(--purple); transform: translateY(-1px);
}
.blog-filter-btn.active {
  background: var(--purple); color: #fff;
  border-color: var(--purple); box-shadow: var(--shadow-purple);
}
.blog-filter-icon { font-size: 0.9rem; }
.blog-filter-count {
  font-family: var(--font-display); font-size: 0.82rem;
  font-weight: 600; color: var(--subtle); white-space: nowrap;
}
.blog-filter-count span { color: var(--purple); font-weight: 800; }

/* === BLOG CONTENT === */
.blog-content-section { padding: 3rem 0; }

/* === CATEGORY TAGS === */
.blog-cat {
  display: inline-block; padding: 0.25rem 0.75rem; border-radius: 999px;
  font-family: var(--font-display); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  margin-bottom: 0.8rem; width: fit-content;
}
.blog-cat--guias { background: var(--purple-soft); color: var(--purple); }
.blog-cat--metodo { background: var(--gold-soft); color: var(--gold-dark); }
.blog-cat--profesional { background: #CCFBF1; color: #0D9488; }
.blog-cat--tips { background: #FCE7F3; color: #DB2777; }

/* === BLOG META === */
.blog-meta {
  display: flex; align-items: center; gap: 1rem;
  font-size: 0.82rem; color: var(--subtle); flex-wrap: wrap;
}

/* === FEATURED ARTICLE === */
.blog-featured {
  display: grid; grid-template-columns: 1fr 1.1fr;
  background: var(--surface); border: 2px solid var(--purple);
  border-radius: var(--radius-xl); overflow: hidden;
  margin-bottom: 3rem;
  box-shadow: 0 25px 70px rgba(107,70,193,0.12);
  transition: all 0.4s var(--ease);
}
.blog-featured:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 80px rgba(107,70,193,0.18);
}
.blog-featured-img {
  background: linear-gradient(135deg, var(--purple), var(--purple-light));
  display: flex; align-items: center; justify-content: center;
  position: relative; min-height: 380px;
}
.blog-featured-emoji { font-size: 5rem; }
.blog-featured-badge {
  position: absolute; top: 1.2rem; left: 1.2rem;
  background: var(--purple-dark); color: #fff;
  padding: 0.4rem 1rem; border-radius: 999px;
  font-family: var(--font-display); font-size: 0.75rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
}
.blog-featured-body {
  padding: 2.5rem; display: flex;
  flex-direction: column; justify-content: center;
}
.blog-featured-body h2 {
  font-family: var(--font-display); font-size: 1.8rem;
  font-weight: 800; line-height: 1.2; margin-bottom: 0.8rem; color: var(--ink);
}
.blog-featured-body p {
  font-size: 1rem; color: var(--muted);
  line-height: 1.7; margin-bottom: 1.2rem;
}
.blog-featured-body .blog-meta { margin-bottom: 1.5rem; }

/* === BLOG POST CARDS === */
.blog-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}
.blog-post-card {
  background: var(--surface); border: 1px solid var(--stroke);
  border-radius: var(--radius-xl); overflow: hidden;
  display: flex; flex-direction: column;
  transition: all 0.4s var(--ease);
}
.blog-post-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg); border-color: var(--purple-muted);
}
.blog-post-img {
  width: 100%; height: 200px;
  background: var(--card-gradient, linear-gradient(135deg, var(--purple), var(--purple-light)));
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.blog-post-emoji { font-size: 3.5rem; }
.blog-post-video-badge {
  position: absolute; top: 0.8rem; right: 0.8rem;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  color: #fff; padding: 0.25rem 0.65rem; border-radius: 999px;
  font-family: var(--font-display); font-size: 0.7rem; font-weight: 600;
}
.blog-post-body {
  padding: 1.5rem; flex: 1;
  display: flex; flex-direction: column;
}
.blog-post-body h3 {
  font-family: var(--font-display); font-size: 1.15rem;
  font-weight: 800; line-height: 1.3; margin-bottom: 0.6rem; color: var(--ink);
}
.blog-post-body h3 a { transition: color 0.2s; }
.blog-post-body h3 a:hover { color: var(--purple); }
.blog-post-body > p {
  font-size: 0.88rem; color: var(--muted);
  line-height: 1.65; flex: 1; margin-bottom: 1rem;
}
.blog-post-body .blog-meta {
  padding-top: 0.8rem; border-top: 1px solid var(--stroke); margin-bottom: 0.8rem;
}
.blog-post-link {
  font-family: var(--font-display); font-size: 0.85rem;
  font-weight: 700; color: var(--purple);
  display: inline-flex; align-items: center; gap: 0.3rem;
  transition: gap 0.3s var(--ease);
}
.blog-post-link:hover { gap: 0.6rem; }

/* === EMPTY STATE === */
.blog-empty {
  text-align: center; padding: 4rem 2rem;
}
.blog-empty-icon { font-size: 3rem; margin-bottom: 1rem; }
.blog-empty h3 {
  font-family: var(--font-display); font-size: 1.3rem;
  font-weight: 700; margin-bottom: 0.5rem; color: var(--ink);
}
.blog-empty p { color: var(--muted); margin-bottom: 1.5rem; }

/* === NEWSLETTER === */
.blog-newsletter-section { padding: 2rem 0 4rem; }
.blog-newsletter {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #0F0720, #1A0B3E, #2D1460);
  color: #fff; padding: 3.5rem 2.5rem;
  border-radius: var(--radius-xl); text-align: center;
}
.blog-newsletter-bg { position: absolute; inset: 0; pointer-events: none; }
.blog-newsletter-glow {
  position: absolute; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(107,70,193,0.3), transparent 60%);
  top: -100px; right: -100px; border-radius: 50%; filter: blur(60px);
}
.blog-newsletter-content { position: relative; z-index: 10; max-width: 550px; margin: 0 auto; }
.blog-newsletter-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.blog-newsletter h3 {
  font-family: var(--font-display); font-size: 1.6rem;
  font-weight: 800; margin-bottom: 0.6rem;
}
.blog-newsletter p {
  font-size: 0.95rem; color: rgba(255,255,255,0.65);
  line-height: 1.65; margin-bottom: 1.5rem;
}
.blog-newsletter-input-wrap {
  display: flex; gap: 0.6rem; max-width: 460px; margin: 0 auto;
}
.blog-newsletter-input-wrap input {
  flex: 1; padding: 0.85rem 1.2rem;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  background: rgba(255,255,255,0.07);
  color: #fff; font-family: var(--font-body); font-size: 0.92rem;
  outline: none; transition: all 0.3s var(--ease);
}
.blog-newsletter-input-wrap input::placeholder { color: rgba(255,255,255,0.35); }
.blog-newsletter-input-wrap input:focus {
  border-color: var(--purple-light);
  background: rgba(107,70,193,0.12);
  box-shadow: 0 0 0 3px rgba(107,70,193,0.2);
}
.blog-newsletter-input-wrap button {
  background: var(--purple); color: #fff;
  padding: 0.85rem 1.5rem; border: none; border-radius: 999px;
  font-family: var(--font-display); font-weight: 700; font-size: 0.9rem;
  cursor: pointer; transition: all 0.3s var(--ease); white-space: nowrap;
}
.blog-newsletter-input-wrap button:hover {
  background: var(--purple-dark); transform: translateY(-2px);
  box-shadow: var(--shadow-purple);
}
.blog-newsletter-note {
  font-size: 0.78rem; color: rgba(255,255,255,0.35); margin-top: 0.8rem;
}

/* === CTA SECTION === */
.blog-cta-section { padding: 0 0 4rem; }
.blog-cta-box {
  text-align: center; max-width: 650px; margin: 0 auto;
  padding: 3rem 2rem;
  background: var(--surface);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-xl);
}
.blog-cta-box h3 {
  font-family: var(--font-display); font-size: clamp(1.3rem,3vw,1.8rem);
  font-weight: 800; line-height: 1.2; margin-bottom: 0.8rem; color: var(--ink);
}
.blog-cta-box p {
  color: var(--muted); font-size: 1rem;
  line-height: 1.6; margin-bottom: 1.5rem;
}
.blog-cta-actions {
  display: flex; align-items: center;
  justify-content: center; gap: 0.8rem; flex-wrap: wrap;
}

/* Ghost dark variant for CTA */
.btn--ghost-dark {
  background: transparent; color: var(--ink);
  border: 2px solid var(--stroke);
}
.btn--ghost-dark:hover {
  background: var(--surface-alt); border-color: var(--purple-muted);
  color: var(--purple); transform: translateY(-2px);
}

/* === FILTER ANIMATION === */
.blog-post-card,
.blog-featured {
  transition: all 0.4s var(--ease), opacity 0.4s, transform 0.4s;
}
.blog-post-card.hiding,
.blog-featured.hiding {
  opacity: 0; transform: scale(0.95);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .blog-hero { padding: 6rem 0 3rem; }
  .blog-hero-title { font-size: clamp(1.8rem, 6vw, 2.5rem); }
  .blog-filters { top: 68px; }
  .blog-filters .container { flex-direction: column; gap: 0.5rem; }
  .blog-filter-buttons { justify-content: center; }
  .blog-filter-btn { padding: 0.4rem 0.8rem; font-size: 0.8rem; }
  .blog-featured { grid-template-columns: 1fr; }
  .blog-featured-img { min-height: 250px; }
  .blog-featured-body { padding: 1.5rem; }
  .blog-posts-grid { grid-template-columns: 1fr; }
  .blog-newsletter { padding: 2.5rem 1.5rem; }
  .blog-newsletter-input-wrap { flex-direction: column; }
  .blog-newsletter-input-wrap input,
  .blog-newsletter-input-wrap button { width: 100%; }
  .blog-cta-actions { flex-direction: column; width: 100%; }
  .blog-cta-actions .btn { width: 100%; }
}
/* ===================================================
   Blog alignment with main site (small coherence fixes)
   =================================================== */

/* Use the fixed nav height from main.css */
.blog-filters { top: 68px; }

/* If a card/article is "hiding" (used by blog.js), fade it out */
.blog-post-card.hiding,
.blog-featured.hiding {
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
}

/* Keep transitions smooth (doesn't change your look) */
.blog-post-card,
.blog-featured {
  will-change: transform, opacity;
}

/* Make sure the sticky filters don't cover anchor jumps */
html { scroll-padding-top: 80px; }