/* =============================================
   수업료 계산기 스타일
   BEM 방법론 적용: Block__Element--Modifier
   ============================================= */

/* ---------- 유틸리티 ---------- */
.hidden {
  display: none !important;
}

/* ---------- 계산기 카드 (Block) ---------- */
.calculator {
  width: 100%;
  max-width: 480px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  padding: 32px;
  transition: box-shadow 0.3s ease;
}

.calculator:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* ---------- 헤더 ---------- */
.calculator__header {
  margin-bottom: 28px;
}

.calculator__header-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

/* 교사 이름 입력 */
.calculator__teacher {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

.calculator__teacher-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: #6b7280;
}

/* 드롭다운 wrapper (input + 삼각표 + 리스트를 감싸는 부모) */
.calculator__teacher-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.calculator__teacher-input {
  width: 130px;
  padding: 8px 30px 8px 12px; /* 오른쪽에 삼각표 공간 확보 */
  border: 1.5px solid #e5e7eb;
  border-radius: 8px;
  font-size: 0.875rem;
  font-family: "Noto Sans KR", sans-serif;
  color: #1f2937;
  background: #f9fafb;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
  box-sizing: border-box;
}

.calculator__teacher-input:focus {
  outline: none;
  border-color: #0c8ee6;
  box-shadow: 0 0 0 3px rgba(12, 142, 230, 0.15);
  background: #ffffff;
}

.calculator__teacher-input::placeholder {
  color: #c4c9d2;
  font-size: 0.75rem;
}

/* 삼각표(토글) 버튼 */
.calculator__teacher-toggle {
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border: none;
  background: transparent;
  color: #9ca3af;
  font-size: 0.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition:
    color 0.2s ease,
    background 0.2s ease;
}

.calculator__teacher-toggle:hover {
  color: #0c8ee6;
  background: #f0f7ff;
}

/* 토글 버튼 활성 상태 (리스트 열림) */
.calculator__teacher-toggle--active {
  color: #0c8ee6;
  transform: translateY(-50%) rotate(180deg);
}

/* 드롭다운 리스트 */
.calculator__teacher-list {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  width: 100%;
  max-height: 160px;
  overflow-y: auto;
  background: #ffffff;
  border: 1.5px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  list-style: none;
  margin: 0;
  padding: 4px 0;
  z-index: 100;
}

/* 리스트 아이템 */
.calculator__teacher-item {
  padding: 8px 12px;
  font-size: 0.85rem;
  color: #374151;
  cursor: pointer;
  transition: background 0.15s ease;
}

.calculator__teacher-item:hover {
  background: #f0f7ff;
  color: #0c8ee6;
}

/* 리스트가 비었을 때 안내 */
.calculator__teacher-empty {
  padding: 10px 12px;
  font-size: 0.8rem;
  color: #9ca3af;
  text-align: center;
}

/* 헤더 제목 영역 */
.calculator__header-title {
  flex: 1;
  text-align: center;
}

.calculator__title {
  font-size: 1.75rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 0;
}

.calculator__subtitle {
  font-size: 0.875rem;
  color: #6b7280;
  font-weight: 300;
  text-align: center;
}

/* ---------- 폼 ---------- */
.calculator__form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---------- 입력 필드 ---------- */
.calculator__field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calculator__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
}

.calculator__label-hint {
  font-size: 0.75rem;
  font-weight: 300;
  color: #9ca3af;
  margin-left: 4px;
}

.calculator__input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid #e5e7eb;
  border-radius: 10px;
  font-size: 1rem;
  font-family: "Noto Sans KR", sans-serif;
  color: #1f2937;
  background: #f9fafb;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease;
  box-sizing: border-box;
}

.calculator__input:focus {
  outline: none;
  border-color: #0c8ee6;
  box-shadow: 0 0 0 3px rgba(12, 142, 230, 0.15);
  background: #ffffff;
}

.calculator__input::placeholder {
  color: #c4c9d2;
}

/* ---------- 버튼 ---------- */
.calculator__button {
  margin-top: 8px;
  padding: 12px 0;
  border: none;
  border-radius: 10px;
  background: linear-gradient(135deg, #0c8ee6, #0070c4);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  font-family: "Noto Sans KR", sans-serif;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease;
}

.calculator__button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(12, 142, 230, 0.35);
}

.calculator__button:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ---------- 결과 영역 ---------- */
.calculator__result {
  margin-top: 24px;
  padding: 20px;
  border-radius: 12px;
  background: #f0f7ff;
  border: 1.5px solid #e0effe;
  transition:
    background 0.3s ease,
    border-color 0.3s ease;
}

.calculator__result--active {
  background: #e0effe;
  border-color: #7cc5fa;
  animation: resultPop 0.35s ease;
}

@keyframes resultPop {
  0% {
    transform: scale(0.97);
    opacity: 0.6;
  }
  60% {
    transform: scale(1.01);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.calculator__result-placeholder {
  text-align: center;
  color: #9ca3af;
  font-size: 0.875rem;
}

.calculator__result-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calculator__result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.calculator__result-row--highlight {
  padding-top: 4px;
}

.calculator__result-label {
  font-size: 0.875rem;
  color: #6b7280;
}

.calculator__result-value {
  font-size: 1rem;
  font-weight: 600;
  color: #1a1a2e;
}

.calculator__result-value--salary {
  font-size: 1.25rem;
  color: #0c8ee6;
  font-weight: 700;
}

.calculator__result-value--rank {
  font-size: 1.1rem;
  color: #4b5563;
  font-weight: 700;
}

.calculator__result-divider {
  height: 1px;
  background: #d1e4f5;
}

/* ---------- 피드백 섹션 ---------- */
.calculator__feedback {
  margin-top: 16px;
  padding: 16px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #fed7aa;
  background-color: #fffaf0;
}

.calculator__feedback-title {
  margin: 0 0 8px 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: #9a3412;
}

.calculator__feedback-list {
  margin: 0;
  padding-left: 20px;
  font-size: 0.85rem;
  color: #7c2d12;
  line-height: 1.5;
}

.calculator__feedback-list li {
  margin-bottom: 8px;
}

.ko-feedback {
  display: block;
  font-size: 0.8em;
  color: #666;
  margin-top: 2px;
}

/* ---------- 등급 색상 ---------- */
.grade--best {
  color: #7c3aed;
} /* 보라 - 최우수 */
.grade--excellent {
  color: #059669;
} /* 초록 - 우수 */
.grade--good {
  color: #0c8ee6;
} /* 파랑 - 양호 */
.grade--normal {
  color: #d97706;
} /* 주황 - 보통 */
.grade--low {
  color: #dc2626;
} /* 빨강 - 미달 */

/* ---------- 기준표 (details/summary) ---------- */
.calculator__table-wrapper {
  margin-top: 20px;
}

.calculator__table-toggle {
  font-size: 0.8rem;
  color: #6b7280;
  cursor: pointer;
  text-align: center;
  list-style: none;
  padding: 8px 0;
  transition: color 0.2s ease;
}

.calculator__table-toggle:hover {
  color: #0c8ee6;
}

.calculator__table-toggle::-webkit-details-marker {
  display: none;
}

.calculator__table {
  width: 100%;
  margin-top: 12px;
  border-collapse: collapse;
  font-size: 0.825rem;
}

.calculator__table th,
.calculator__table td {
  padding: 10px 12px;
  text-align: center;
  border-bottom: 1px solid #e5e7eb;
}

.calculator__table th {
  background: #f3f4f6;
  font-weight: 600;
  color: #374151;
}

.calculator__table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- 뱃지 ---------- */
.calculator__badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.calculator__badge--excellent {
  background: #d1fae5;
  color: #059669;
}
.calculator__badge--good {
  background: #dbeafe;
  color: #2563eb;
}
.calculator__badge--normal {
  background: #fef3c7;
  color: #d97706;
}
.calculator__badge--low {
  background: #fee2e2;
  color: #dc2626;
}

/* ---------- 반응형 (모바일) ---------- */
@media (max-width: 480px) {
  .calculator {
    padding: 24px 18px;
    border-radius: 12px;
  }

  .calculator__header-top {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .calculator__teacher-input {
    width: 100%;
  }

  .calculator__header-title {
    text-align: center;
  }

  .calculator__title {
    font-size: 1.5rem;
  }
}