body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: #f9fafb;
  color: #111827;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
}

header {
  width: 100%;
  padding: 1.5rem;
  background-color: #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: #374151;
}

main {
  width: 100%;
  max-width: 800px;
  padding: 0 1rem;
}

.card {
  background: #ffffff;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  margin-bottom: 1.5rem;
}

h2 {
  margin-top: 0;
  font-size: 1.25rem;
  color: #1f2937;
}

p {
  color: #4b5563;
  line-height: 1.5;
}

a.button, button {
  display: inline-block;
  background-color: #2563eb;
  color: #ffffff;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  text-decoration: none;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
}

a.button:hover, button:hover {
  background-color: #1d4ed8;
}

input[type="text"] {
  padding: 0.5rem;
  border: 1px solid #d1d5db;
  border-radius: 0.375rem;
  width: calc(100% - 1rem);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.hidden {
  display: none !important;
}

/* NG Mahjong specific styles */
.player-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.player-card {
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1rem;
  text-align: center;
}

.player-card .name {
  font-weight: 600;
  color: #374151;
  margin-bottom: 0.5rem;
}

.player-card .word {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ef4444;
  background: #fee2e2;
  padding: 0.5rem;
  border-radius: 4px;
}

.player-card.self .word {
  color: #9ca3af;
  background: #e5e7eb;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  margin-left: 0.5rem;
}

.badge.player {
  background-color: #dbeafe;
  color: #1e40af;
}

.badge.spectator {
  background-color: #f3f4f6;
  color: #374151;
}

ul {
  padding-left: 1.5rem;
}
li {
  margin-bottom: 0.5rem;
}