:root {
  color-scheme: light;
  font-family: "Noto Sans JP", system-ui, sans-serif;
  background: #f5f6fb;
  color: #1e1f28;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 32px 16px 48px;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

header {
  text-align: center;
}

h1 {
  margin-bottom: 8px;
  font-size: 2rem;
}

.panel {
  background: #ffffff;
  border-radius: 16px;
  padding: 20px 24px;
  box-shadow: 0 10px 30px rgba(31, 34, 56, 0.08);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

input[type="text"] {
  flex: 1;
  min-width: 240px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #d1d5e2;
  font-size: 1rem;
}

button {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  background: #5b6cff;
  color: white;
}

button.ghost {
  background: transparent;
  color: #5b6cff;
  border: 1px solid #b5beff;
}

button.choice {
  flex: 1;
  min-height: 56px;
  font-size: 1rem;
}

button.choice.neutral {
  background: #f2f4ff;
  color: #4c56a6;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.hint {
  margin-top: 8px;
  color: #6b7280;
  font-size: 0.9rem;
}

.matchup-area {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  align-items: center;
  margin: 16px 0;
  min-height: 24px;
}

.matchup-card {
  background: #f6f7ff;
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  font-size: 1.1rem;
  font-weight: 600;
  color: #2a2f4f;
}

.matchup-card .side {
  display: inline-block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  color: #7781c0;
  letter-spacing: 0.05em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.table-wrap {
  overflow-x: auto;
}

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

th,
td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid #eef0f6;
  font-size: 0.95rem;
}

tbody tr:hover {
  background: #fafbff;
}

.empty {
  color: #9aa1b9;
}

.remove-btn {
  background: #fff5f5;
  color: #e05555;
  border: 1px solid #f3b1b1;
  padding: 6px 10px;
  font-size: 0.8rem;
}

@media (max-width: 640px) {
  .panel {
    padding: 16px;
  }

  button.choice {
    min-width: 100%;
  }
}