.button {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  position: relative;
  text-decoration: none;
  user-select: none;
  white-space: nowrap;
}

/* 크기별 스타일 */
.button--small {
  font-size: 0.875rem;
  padding: 8px 16px;
  min-height: 32px;
}

.button--medium {
  font-size: 1rem;
  padding: 12px 20px;
  min-height: 40px;
}

.button--large {
  font-size: 1.125rem;
  padding: 16px 24px;
  min-height: 48px;
}

/* 테마별 스타일 */
.button--light {
  color: #333;
}

.button--dark {
  color: #fff;
}

/* 주요/보조 버튼 스타일 */
.button--primary {
  background-color: #007bff;
  color: white;
  box-shadow: 0 2px 4px rgba(0, 123, 255, 0.2);
}

.button--primary:hover:not(:disabled) {
  background-color: #0056b3;
  box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
  transform: translateY(-1px);
}

.button--secondary {
  background-color: transparent;
  color: #007bff;
  border: 2px solid #007bff;
}

.button--secondary:hover:not(:disabled) {
  background-color: #007bff;
  color: white;
  transform: translateY(-1px);
}

/* 다크 테마 */
.button--dark.button--primary {
  background-color: #4dabf7;
  color: #1a1a1a;
  box-shadow: 0 2px 4px rgba(77, 171, 247, 0.2);
}

.button--dark.button--primary:hover:not(:disabled) {
  background-color: #339af0;
  box-shadow: 0 4px 8px rgba(77, 171, 247, 0.3);
}

.button--dark.button--secondary {
  color: #4dabf7;
  border-color: #4dabf7;
}

.button--dark.button--secondary:hover:not(:disabled) {
  background-color: #4dabf7;
  color: #1a1a1a;
}

/* 비활성화 상태 */
.button--disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.button--disabled:hover {
  transform: none !important;
  box-shadow: none !important;
}

/* 로딩 상태 */
.button--loading {
  cursor: wait;
}

.button--loading .button-text {
  opacity: 0.7;
}

/* 로더 스피너 */
.button-loader {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.button-loader-spinner {
  width: 16px;
  height: 16px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 아이콘 스타일 */
.button--with-icon {
  gap: 8px;
}

.button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.button-icon--left {
  order: -1;
}

.button-icon--right {
  order: 1;
}

/* 전체 너비 */
.button--full-width {
  width: 100%;
}

/* 반응형 */
@media (max-width: 768px) {
  .button--large {
    font-size: 1rem;
    padding: 14px 20px;
    min-height: 44px;
  }
}