:root {
  --navy: #1a237e;
  --navy-mid: #24308a;
  --gold: #d4a017;
  --cream: #f7f1e3;
  --ink: #1b1b1b;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--cream);
  color: var(--ink);
}

body {
  min-height: 100vh;
}

.hub {
  max-width: 58rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.hub-header {
  text-align: center;
  margin-bottom: 2rem;
}

.hub-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--navy);
}

.hub-header p {
  margin: 0.5rem 0 0;
  font-size: 1.05rem;
}

.hub-section {
  margin-bottom: 1.75rem;
}

.hub-section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  color: var(--navy);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0.85rem;
}

.card {
  display: block;
  width: 100%;
  text-align: left;
  background: #fff;
  border: 2px solid #d9d0bc;
  border-radius: 8px;
  padding: 1rem 1.1rem;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
}

.card:hover,
.card:focus {
  border-color: var(--navy-mid);
  outline: none;
}

.card.selected {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.2);
}

.card.disabled,
.card:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.card h3 {
  margin: 0 0 0.3rem;
  font-size: 1.25rem;
  color: var(--navy);
}

.card .meta {
  margin: 0 0 0.45rem;
  font-size: 0.9rem;
  color: #555;
}

.card .blurb {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.35;
}

.play-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
  margin-top: 1.5rem;
}

.play-btn {
  background: var(--navy-mid);
  color: #fff;
  border: 0;
  border-radius: 6px;
  padding: 0.7rem 1.8rem;
  font-size: 1.2rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
}

.play-btn:hover,
.play-btn:focus {
  background: var(--navy);
}

.play-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.hub-error {
  color: #8b1a1a;
  text-align: center;
  min-height: 1.4rem;
  margin: 0.75rem 0 0;
}

.hub-foot {
  margin-top: 2.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: #555;
}

.hub-foot a {
  color: var(--navy);
}

.hub-page {
  max-width: 40rem;
}

.hub-back {
  margin: 0 0 1rem;
  text-align: left;
}

.hub-page h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  color: var(--navy);
}

.hub-page h2 {
  margin: 1.6rem 0 0.5rem;
  font-size: 1.15rem;
  color: var(--navy);
}

.hub-page p,
.hub-page li {
  line-height: 1.45;
}

.hub-page ul {
  padding-left: 1.25rem;
}

.hub-page table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  margin: 0.75rem 0 1.25rem;
}

.hub-page th,
.hub-page td {
  text-align: left;
  vertical-align: top;
  padding: 0.4rem 0.5rem 0.4rem 0;
  border-bottom: 1px solid #d9d0bc;
}

.hub-page a {
  color: var(--navy);
}

.hub[hidden],
#game-root[hidden] {
  display: none !important;
}