.challenges-page {
  min-height: 100vh;
  padding:
    clamp(3rem, 7vw, 4.5rem)
    var(--page-padding)
    clamp(4.5rem, 8vw, 5.625rem);
  background: var(--page-gradient);
}

/* HERO */

.challenges-hero,
.challenge-summary,
.challenge-section {
  width: min(100%, var(--content-lg));
  margin-inline: auto;
}

.challenges-hero {
  max-width: var(--content-md);
  margin-bottom: var(--section-gap);
  text-align: center;
}

.challenges-hero h1 {
  margin: 0;
  font-family: Georgia, serif;
  font-size: clamp(2.875rem, 7vw, 4.875rem);
  line-height: 1;
  color: var(--background-dark);
  
}

.challenges-hero p {
  max-width: var(--content-sm);
  margin: var(--space-md) auto 0;
  color: var(--text-muted);
  font-size: var(--font-base);
  line-height: 1.6;
}

.challenge-btn {
  display: inline-block;
  margin-top: var(--space-lg);
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-pill);
  background: var(--background-dark);
  color: var(--text-light);
  font-weight: 800;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease;
}

.challenge-btn:hover {
  transform: translateY(-0.125rem);
}

/* SUMMARY */

.challenge-summary {
  margin-bottom: var(--section-gap);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  text-align: center;
}

.challenge-summary div {
  padding: var(--space-lg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  background: var(--background-white);
  box-shadow: 0 1.125rem 2.8rem var(--shadow-soft);
}

.challenge-summary span {
  display: block;
  color: var(--text-muted);
  font-size: var(--font-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.challenge-summary strong {
  display: block;
  margin-top: var(--space-xs);
  font-family: Georgia, serif;
  font-size: clamp(2rem, 5vw, 2.625rem);
  line-height: 1;
  color: var(--background-dark);
}

/* SECTIONS */

.challenge-section {
  margin-bottom: var(--section-gap);
}

.challenge-section h2 {
  margin: 0 0 var(--space-md);
  font-family: Georgia, serif;
  font-size: clamp(2rem, 5vw, 2.375rem);
  line-height: 1.05;
  color: var(--background-dark);
}

/* GRID */

.challenge-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

/* CARD */

.challenge-card {
  position: relative;
  overflow: hidden;

  padding: 1.625rem;

  border: 1px solid var(--border-soft);
  border-radius: 1.625rem;

  background: var(--background-white);

  box-shadow: 0 1.125rem 2.8rem var(--shadow-soft);
}

.challenge-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 0.375rem;
  background: var(--background-dark);
}

/* CARD HEADER */

.challenge-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;

  margin-bottom: 0.875rem;
}

.challenge-card-header h3 {
  margin: 0;

  font-family: Georgia, serif;
  font-size: clamp(1.875rem, 4vw, 2.125rem);
  line-height: 1;

  color: var(--background-dark);
}

/* CARD BODY */

.challenge-card p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.55;
}

/* META */

.challenge-meta {
  margin-top: 1.375rem;

  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 0.75rem;

  flex-wrap: wrap;
}

/* PILLS */

.miles-pill,
.status-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;

  padding: 0.55rem 0.8rem;

  border-radius: var(--radius-pill);

  font-size: 0.75rem;
  font-weight: 900;

  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.miles-pill {
  border: 1px solid var(--highlight);
  background: var(--highlight-soft);
  color: var(--background-dark);
}

.status-pill.pending {
  background: var(--background-soft);
  color: var(--background-dark);
}

.status-pill.awaiting_clearance {
  border: 1px solid var(--gold);
  background: var(--gold-soft);
  color: var(--gold-text);
}

.status-pill.cleared {
  border: 1px solid var(--platinum);
  background: var(--platinum-soft);
  color: var(--platinum-text);
}

/* EMPTY STATE */

.empty-state {
  padding: var(--space-lg);

  border: 1px dashed var(--border-dashed);
  border-radius: var(--radius-lg);

  background: var(--background-white);

  color: var(--text-muted);
  text-align: center;
}

/* BUTTON */

.challenge-submit-btn {
  flex-shrink: 0;

  padding: 0.65rem 1rem;

  border: 0;
  border-radius: var(--radius-pill);

  background: var(--background-dark);
  color: var(--text-light);

  font-size: 0.75rem;
  font-weight: 800;

  cursor: pointer;

  transition:
    transform 0.2s ease,
    opacity 0.2s ease;
}

.challenge-submit-btn:hover {
  transform: translateY(-0.125rem);
}

.challenge-submit-btn:disabled {
  opacity: 0.7;
  cursor: default;
}

/* MOBILE */

@media (max-width: 800px) {
  .challenges-page {
    padding:
      clamp(2.5rem, 7vw, 3rem)
      var(--page-padding)
      clamp(4rem, 9vw, 5rem);
  }

  .challenge-summary,
  .challenge-grid {
    grid-template-columns: 1fr;
  }

  .challenge-card {
    padding: 1.4rem;
  }

  .challenge-card-header h3 {
    font-size: clamp(1.75rem, 8vw, 2rem);
  }

  .challenge-meta {
    margin-top: 1.1rem;
  }
}