@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg:      #030712;
  --bg2:     #0a0f1c;
  --bg3:     #0d1117;
  --violet:  #a78bfa;
  --rose:    #f472b6;
  --text:    #e2e8f0;
  --muted:   #7c8fa8;
  --border:  rgba(255,255,255,.08);
  --shadow:  0 20px 40px -20px rgba(0,0,0,.55);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Header ───────────────────────────────────────────────── */
header.site {
  background: rgba(3,7,18,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 10;
}
header.site .brand { display: flex; align-items: center; text-decoration: none; }
header.site .brand img { height: 28px; display: block; }
header.site nav { display: flex; align-items: center; gap: 20px; }
header.site nav a.link { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; }
header.site nav a.link:hover { color: var(--text); }
header.site a.cta {
  background: linear-gradient(90deg, var(--violet), var(--rose));
  color: #fff;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  white-space: nowrap;
  transition: transform .2s ease, box-shadow .2s ease;
}
header.site a.cta:hover { transform: translateY(-1px); box-shadow: 0 8px 20px -6px rgba(167,139,250,.5); }

/* ── Shared layout ────────────────────────────────────────── */
main { max-width: 720px; margin: 0 auto; padding: clamp(32px, 8vw, 48px) 24px 80px; }
main.index-wrap { max-width: 1120px; }

footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}
footer a { color: var(--muted); }

/* ── Blog index page ──────────────────────────────────────── */
.page-head { margin-bottom: 32px; }
.page-head h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); font-weight: 800; letter-spacing: -.01em; margin-bottom: 10px; }
.page-head .sub { color: var(--muted); font-size: 16px; }

.blog-controls { display: flex; flex-direction: column; gap: 16px; margin-bottom: 36px; }
.search-input {
  width: 100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
}
.search-input::placeholder { color: var(--muted); }
.search-input:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(167,139,250,.15); }

.filter-scroll { position: relative; }
.filter-pills { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-pill {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.filter-pill:hover { color: var(--text); border-color: rgba(167,139,250,.4); }
.filter-pill.active { background: linear-gradient(90deg, var(--violet), var(--rose)); color: #fff; border-color: transparent; }

.no-results { color: var(--muted); text-align: center; padding: 56px 0; font-size: 15px; }

.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 44px; flex-wrap: wrap; }
.pagination button {
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.pagination button:hover:not(:disabled):not(.active) { border-color: rgba(167,139,250,.4); color: var(--violet); }
.pagination button.active { background: linear-gradient(90deg, var(--violet), var(--rose)); color: #fff; border-color: transparent; }
.pagination button:disabled { opacity: .35; cursor: not-allowed; }

.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 28px; }

.post-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(167,139,250,.35); }
.post-card .thumb { aspect-ratio: 16/10; width: 100%; overflow: hidden; background: var(--bg3); }
.post-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.post-card:hover .thumb img { transform: scale(1.06); }
.post-card .card-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.post-card .date { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--violet); font-weight: 700; }
.post-card h2 { font-size: 18px; line-height: 1.4; color: var(--text); font-weight: 700; }
.post-card p { font-size: 14px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.post-card .read-more { margin-top: auto; padding-top: 6px; font-size: 13px; font-weight: 700; color: var(--rose); }

/* ── Article page ─────────────────────────────────────────── */
.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; margin-bottom: 22px; }
.back-link:hover { color: var(--violet); }

.meta { color: var(--muted); font-size: 14px; margin-bottom: 24px; }

main > .hero-img { margin: 0 0 32px; }
article .hero-img { margin: 36px 0; }
.hero-img img { width: 100%; height: auto; aspect-ratio: 16/9; object-fit: cover; border-radius: 16px; box-shadow: var(--shadow); }
.hero-img figcaption { color: var(--muted); font-size: 12px; margin-top: 8px; text-align: right; }
.hero-img figcaption a { color: var(--muted); }

article h1 { font-size: clamp(1.8rem, 5vw, 2.35rem); line-height: 1.25; margin-bottom: 16px; color: var(--text); font-weight: 800; letter-spacing: -.01em; }
article h2 { font-size: clamp(1.3rem, 3.4vw, 1.5rem); margin: 40px 0 14px; color: var(--violet); font-weight: 700; }
article p { margin-bottom: 18px; color: var(--text); font-size: 16px; }
article ul { margin: 0 0 18px 22px; }
article li { margin-bottom: 10px; }
article a { color: var(--violet); text-decoration: underline; text-decoration-color: rgba(167,139,250,.35); }
article a:hover { text-decoration-color: var(--violet); }
article strong { color: #fff; }

.cta-box {
  margin-top: 56px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 36px 32px;
  text-align: center;
}
.cta-box h3 { font-size: 22px; margin-bottom: 8px; color: #fff; font-weight: 800; }
.cta-box p { color: var(--muted); margin-bottom: 22px; }
.cta-box a {
  display: inline-block;
  background: linear-gradient(90deg, var(--violet), var(--rose));
  color: #fff;
  text-decoration: none;
  padding: 14px 30px;
  border-radius: 12px;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease;
}
.cta-box a:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -8px rgba(167,139,250,.5); }

/* ── Back to top ──────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(90deg, var(--violet), var(--rose));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .25s ease, transform .25s ease, box-shadow .25s ease;
  z-index: 20;
}
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 16px 32px -10px rgba(167,139,250,.55); }
.back-to-top svg { width: 20px; height: 20px; }

/* ── Mobile ───────────────────────────────────────────────── */
@media (max-width: 640px) {
  header.site { padding: 14px 16px; }
  header.site .brand img { height: 24px; }
  header.site nav { gap: 12px; }
  header.site nav a.link { font-size: 13px; }
  header.site a.cta { padding: 8px 14px; font-size: 13px; }
  main { padding: 24px 16px 56px; }
  .posts-grid { grid-template-columns: 1fr; gap: 20px; }
  .cta-box { padding: 26px 20px; }
  .cta-box a { width: 100%; }

  /* Compact the page header + controls so an article is visible without scrolling */
  .page-head { margin-bottom: 18px; }
  .page-head h1 { font-size: 1.5rem; line-height: 1.3; margin-bottom: 4px; }
  .page-head .sub { font-size: 14px; }

  .blog-controls { gap: 10px; margin-bottom: 20px; }
  .search-input { padding: 11px 14px; font-size: 14px; }

  /* Category pills scroll horizontally instead of wrapping to several rows */
  .filter-scroll { margin: 0 -16px; padding: 0 16px; }
  .filter-scroll::after {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 28px;
    background: linear-gradient(to right, transparent, var(--bg));
    pointer-events: none;
  }
  .filter-pills {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
  }
  .filter-pills::-webkit-scrollbar { display: none; }
  .filter-pill { flex-shrink: 0; white-space: nowrap; }

  .back-to-top { bottom: 18px; right: 18px; width: 40px; height: 40px; }
  .back-to-top svg { width: 18px; height: 18px; }
}