:root {
  color-scheme: light dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: #f1f1f1;
  color: #1a1a1a;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem;
  background: linear-gradient(180deg, rgba(241, 241, 241, 0.8), rgba(255, 255, 255, 1));
}

header, footer {
  text-align: center;
  margin-bottom: 2rem;
}

main {
  flex: 1;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}

#summary {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.summary-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.summary-header h2 {
  margin: 0;
}

.detail-pill {
  margin: 0;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(42, 108, 223, 0.12);
  color: #204ea9;
  font-weight: 600;
  font-size: 0.9rem;
}

#stories {
  display: grid;
  gap: 1.25rem;
  perspective: 1000px;
}

.card {
  display: grid;
  border-radius: 14px;
  background-color: transparent;
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
  transition: transform 0.6s, box-shadow 0.2s ease;
  transform-style: preserve-3d;
}

.card[data-side='original'] {
  transform: rotateY(180deg);
}

.card:hover {
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.12);
}

.card-face {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  padding: 1.25rem 1.5rem 1.5rem;
  grid-row: 1 / -1;
  grid-column: 1 / -1;
  -webkit-backface-visibility: hidden; /* Safari */
  backface-visibility: hidden;
  box-sizing: border-box;
  border-radius: 14px;
  background-color: rgba(255, 255, 255, 0.86);
}

.card-face--back {
  transform: rotateY(180deg);
}

.card-face h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-face p {
  margin: 0;
  line-height: 1.6;
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
}

.placeholder {
  color: #555;
  font-style: italic;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: 999px;
  background: rgba(42, 108, 223, 0.14);
  color: #204ea9;
}

.badge--subtle {
  background: rgba(0, 0, 0, 0.08);
  color: #2e2e2e;
}

button.refresh {
  margin-top: 1rem;
  padding: 0.75rem 1.25rem;
  border: none;
  border-radius: 999px;
  background: #2a6cdf;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

button.refresh:hover {
  background: #204ea9;
}

.toggle-card {
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(42, 108, 223, 0.4);
  background: rgba(42, 108, 223, 0.08);
  color: #1f3a6d;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.toggle-card:hover {
  background: rgba(42, 108, 223, 0.16);
  border-color: rgba(42, 108, 223, 0.6);
}

.source-link {
  padding: 0.6rem 1rem;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(0, 0, 0, 0.05);
  color: inherit;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.source-link:hover {
  background: rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.18);
}

.source-link--disabled,
.source-link[aria-disabled='true'] {
  opacity: 0.6;
  pointer-events: none;
}

@media (max-width: 600px) {
  .card-face {
    padding: 1.1rem 1.2rem 1.25rem;
  }

  .card-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .toggle-card,
  .source-link {
    width: 100%;
    text-align: center;
  }
}