/* ===========================
   Triple C — Blog Page
   =========================== */

/* ── Page hero (shared across inner pages) ── */
.page-hero {
  padding: calc(var(--nav-h) + 80px) 0 72px;
  background: var(--bg);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}
.page-hero__inner {
  position: relative;
  z-index: 1;
}
.page-hero__headline {
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 20px;
  max-width: 720px;
  line-height: 1.1;
}
.page-hero__sub {
  font-size: 18px;
  color: var(--text-sec);
  max-width: 520px;
  line-height: 1.75;
  font-weight: 400;
}

/* ── Filter bar ── */
.blog-filter {
  padding: 32px 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--nav-h);
  z-index: 10;
  backdrop-filter: blur(12px);
}
.blog-filter__tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.blog-filter__tab {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
  padding: 8px 18px;
  border-radius: 50px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.blog-filter__tab:hover {
  color: rgba(255,255,255,0.8);
  border-color: rgba(255,255,255,0.25);
}
.blog-filter__tab.active {
  color: #fff;
  background: rgba(127,199,183,0.12);
  border-color: rgba(127,199,183,0.35);
}

/* ── Blog grid page ── */
.blog-page {
  padding: 80px 0 120px;
  background: var(--bg);
}
.blog-page .blog__grid {
  grid-template-columns: repeat(3, 1fr);
}

/* ── Hide filtered cards ── */
.blog-card.hidden {
  display: none;
}

/* ── Blog card links ── */
.blog-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

/* ── Active nav link ── */
.nav__link.active { color: #fff; }

@media (max-width: 900px) {
  .blog-page .blog__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .blog-page .blog__grid { grid-template-columns: 1fr; }
  .blog-filter { position: static; }
}