:root {
  color-scheme: light;
  --border: #d0d5dd;
  --bg: #f7f8fa;
  --accent: #2f6fed;
  --danger: #d92d20;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

body {
  margin: 0;
  background: var(--bg);
  color: #1a1d22;
}

#app {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

h1 {
  font-size: 1.5rem;
}

section {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
}

#team-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}

.team-row {
  display: flex;
  gap: 6px;
}

.team-tag-input {
  width: 4em;
}

.team-name-input {
  flex: 1;
}

#rank-score-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.rank-score-item input {
  width: 4.5em;
  margin-left: 4px;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: center;
  font-size: 0.9rem;
}

#round-table-wrapper {
  overflow-x: auto;
}

select.duplicate-rank {
  border: 2px solid var(--danger);
  background: #fef3f2;
}

input[type="number"] {
  width: 5em;
}

button {
  cursor: pointer;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  padding: 6px 12px;
  font-size: 0.9rem;
}

#add-round-btn {
  margin-top: 10px;
  border-color: var(--accent);
  color: var(--accent);
}

button.danger {
  border-color: var(--danger);
  color: var(--danger);
}