.k510-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
  gap: 12px;
  margin-bottom: 24px;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.k510-fieldset {
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 12px 16px 14px;
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 88px;
  box-sizing: border-box;
}

.k510-fieldset legend {
  padding: 0 6px;
  font-size: 14px;
  font-weight: 600;
  color: #374151;
}

.k510-fieldset-body {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 18px;
  flex: 1;
  min-height: 40px;
}

.k510-fieldset-multiplier .k510-fieldset-body {
  gap: 0;
}

.k510-fieldset-multiplier input {
  width: 52px;
  padding: 8px 6px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  text-align: center;
  font: inherit;
  font-size: 15px;
  box-sizing: border-box;
}

.k510-fieldset-multiplier input:focus {
  outline: 2px solid #2563eb;
  outline-offset: 0;
  border-color: #2563eb;
}

.k510-radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: #111827;
  cursor: pointer;
  white-space: nowrap;
}

.k510-grid-wrap {
  overflow-x: auto;
  margin-bottom: 20px;
  padding-bottom: 4px;
  -webkit-overflow-scrolling: touch;
}

.k510-score-layout {
  width: 100%;
  max-width: 100%;
}

.k510-score-header,
.k510-score-row {
  display: grid;
  grid-template-columns: repeat(var(--player-count, 4), minmax(0, 1fr));
  gap: 6px;
  align-items: center;
}

.k510-score-layout[data-has-row-labels="true"] .k510-score-header,
.k510-score-layout[data-has-row-labels="true"] .k510-score-row {
  grid-template-columns: 2.25rem repeat(var(--player-count, 4), minmax(0, 1fr));
}

.k510-score-corner,
.k510-score-row-label {
  font-size: 12px;
  font-weight: 600;
  color: #6b7280;
  text-align: center;
  line-height: 1.2;
}

.k510-score-head-cell {
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  color: #374151;
  line-height: 1.2;
  padding: 2px 0 6px;
}

.k510-score-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.k510-score-input {
  width: 100%;
  padding: 8px 4px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  text-align: center;
  font: inherit;
  font-size: 14px;
  box-sizing: border-box;
}

.k510-score-input:focus {
  outline: 2px solid #2563eb;
  outline-offset: 0;
  border-color: #2563eb;
}

.k510-score-result-row {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid #f3f4f6;
}

.k510-score-result-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-height: 1px;
}

.k510-result-base {
  font-size: 14px;
  color: #111827;
  line-height: 1.4;
  word-break: break-all;
}

.k510-result-multiplied {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed #d1d5db;
  color: #2563eb;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  word-break: break-all;
  width: 100%;
}

@media (max-width: 768px) {
  body.k510-reward-page .content {
    padding-top: 0;
  }

  .k510-card {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    padding: 12px;
    box-sizing: border-box;
  }

  .k510-controls {
    gap: 10px;
    margin-bottom: 16px;
    max-width: none;
  }

  .k510-fieldset {
    min-height: 82px;
    padding: 10px 12px 12px;
  }

  .k510-fieldset legend {
    font-size: 13px;
  }

  .k510-fieldset-body {
    min-height: 36px;
    gap: 10px 14px;
  }

  .k510-radio {
    font-size: 13px;
  }

  .k510-grid-wrap {
    overflow-x: visible;
    margin: 0 0 16px;
    padding: 0;
  }

  .k510-score-header,
  .k510-score-row {
    gap: 4px;
  }

  .k510-score-head-cell {
    font-size: 12px;
    padding-bottom: 4px;
  }

  .k510-score-input {
    padding: 7px 2px;
    font-size: 13px;
    border-radius: 6px;
  }

  .k510-result-base,
  .k510-result-multiplied {
    font-size: 12px;
  }

  .k510-result-multiplied {
    margin-top: 16px;
    padding-top: 12px;
  }
}

@media (max-width: 640px) {
  .k510-controls {
    grid-template-columns: 1fr 1fr;
  }
}