/* Page-specific styles for Challenges (respects base.css conventions) */
.challenges-hero {
  display: grid;
  gap: 2rem;
  align-items: center;
  padding-block: clamp(1.5rem, 2vw, 3rem);
}
.challenges-hero__content .page-title {
  font-size: clamp(1.75rem, 2.8vw, 2.5rem);
  line-height: 1.2;
}
.challenges-hero__content .page-subtitle {
  max-width: 60ch;
  opacity: 0.9;
}
.challenges-hero__media img {
  width: 100%;
  height: auto;
  border-radius: 0.75rem;
  display: block;
}
.hero-cta { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1rem; }

.challenges-tools { padding-block: 0.5rem 1rem; }
.tools-bar { display: flex; align-items: center; gap: 0.75rem; }
.tools-bar input[type="search"] {
  flex: 1;
  max-width: 42rem;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: var(--surface-2, #151515);
  color: var(--text, #f3f3f3);
  border: 1px solid var(--border, #2a2a2a);
}
.help-text { font-size: 0.875rem; opacity: 0.7; }
.results-count { margin-top: 0.5rem; opacity: 0.8; }

.section-title { margin-block: 1.5rem 1rem; }
.challenge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.challenge-card {
  background: var(--surface-2, #141417);
  border: 1px solid var(--border, #26262a);
  border-radius: 0.75rem;
  padding: 1rem;
  display: grid;
  gap: 0.5rem;
}
.challenge-card header { display: grid; gap: 0.25rem; }
.challenge-title { font-size: 1.1rem; }
.challenge-kicker { font-size: 0.95rem; opacity: 0.85; }
.challenge-desc { opacity: 0.95; }
.challenge-media img { width: 100%; height: auto; border-radius: 0.5rem; }
.challenge-actions { margin-top: 0.25rem; }
.challenge-actions .btn { padding: 0.5rem 0.75rem; }

.cta-band { padding-block: 2rem; }
.cta-band__inner {
  background: linear-gradient(180deg, rgba(36,36,44,0.7), rgba(36,36,44,0.4));
  border: 1px solid var(--border, #2a2a2f);
  border-radius: 0.75rem;
  padding: 1.25rem;
  display: grid;
  gap: 0.75rem;
}
.cta-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

@media (min-width: 960px) {
  .challenges-hero {
    grid-template-columns: 1.1fr 1fr;
  }
}

/* Utility */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }