/**
 * weight-curve.css — Weight Curve 페이지 전용 스타일
 *
 * 의존: styles.css의 CSS 변수(--color-*, --space-*, --font-* 등)
 * 클래스 접두사: wc- (Weight Curve)
 */

/* ──────────────────────────────────────────────
   1. 레이아웃 컨테이너
   ────────────────────────────────────────────── */
.wc-content {
  padding: var(--space-8) var(--space-6);
  max-width: 1000px;
  margin: 0 auto;
}

/* ──────────────────────────────────────────────
   2. 페이지 헤더
   ────────────────────────────────────────────── */
.wc-page-header {
  margin-bottom: var(--space-5);
}

.wc-page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin: 0 0 4px;
  letter-spacing: var(--tracking-tight);
}

.wc-page-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ──────────────────────────────────────────────
   3. 체중 입력 바 (오너 전용)
   ────────────────────────────────────────────── */
.wc-input-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.wc-input-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.wc-input-field {
  padding: 5px 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 13px;
  color: var(--color-text-primary);
  outline: none;
  transition: border-color 0.12s;
  font-family: var(--font-primary);
}
.wc-input-field:focus {
  border-color: var(--color-primary);
  outline: 2px solid rgba(232,69,10,0.15);
  outline-offset: 0;
}

.wc-input-kg {
  width: 90px;
}

.wc-input-save {
  padding: 5px 16px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s;
  font-family: var(--font-primary);
  white-space: nowrap;
}
.wc-input-save:hover  { background: var(--color-primary-hover); }
.wc-input-save:active { transform: translateY(1px); }

.wc-input-msg {
  font-size: 12px;
  color: var(--color-green);
  font-weight: 500;
  margin-left: 4px;
}
.wc-input-msg.error { color: var(--color-red); }

/* 입력 바 내 구분선 */
.wc-input-divider {
  width: 1px;
  height: 22px;
  background: var(--color-border);
  flex-shrink: 0;
  margin: 0 var(--space-1);
}

/* 목표 설정 버튼 (보조 스타일) */
.wc-input-save--secondary {
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.wc-input-save--secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
}

/* ──────────────────────────────────────────────
   4. 섹션 전체 컨테이너
   ────────────────────────────────────────────── */
.wc-sections {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* ──────────────────────────────────────────────
   5. KPI 카드 행 (Section 1)
   ────────────────────────────────────────────── */
.wc-kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.wc-kpi-card {
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 3px;
  transition: border-color 0.12s;
}
.wc-kpi-card:hover { border-color: var(--color-primary-muted); }

.wc-kpi-card--accent {
  border-top: 3px solid var(--color-primary);
}

.wc-kpi-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.wc-kpi-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.1;
}

.wc-kpi-sub {
  font-size: 11px;
  color: var(--color-text-tertiary);
}

/* ──────────────────────────────────────────────
   6. 섹션 카드 (Sections 2–7)
   ────────────────────────────────────────────── */
/* ── 그룹 구분자 (Training Lab과 동일 패턴) ── */
.wc-group-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-8) 0 var(--space-4);
}
.wc-group-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.wc-group-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.wc-section-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-5);
}

/* ── 공통: 인사이트/가이드 박스 (DRY 추출) ── */
.wc-insight-box {
  margin-top: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-alt);
  border-left: 3px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.wc-insight-box:empty { display: none; }

/* ── 공통: 입력 필드 base (DRY 추출) ── */
.wc-input-base {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  outline: none;
  transition: border-color 0.12s;
}
.wc-input-base:focus {
  border-color: var(--color-primary);
  outline: 2px solid rgba(232,69,10,0.15);
  outline-offset: 0;
}

.wc-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.wc-section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
}

.wc-section-badge {
  font-size: 10px;
  font-weight: 700;
  color: var(--color-text-tertiary);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  padding: 2px 7px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.wc-section-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-4);
  line-height: 1.6;
}

/* 차트 래퍼 */
.wc-chart-wrap {
  position: relative;
  background: var(--color-surface);
}

/* ──────────────────────────────────────────────
   7. PMC 범례 (Section 4)
   ────────────────────────────────────────────── */
.wc-pmc-legend {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.wc-pmc-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 4px;
  flex-shrink: 0;
}

/* PMC 가이드 패널 */
/* .wc-pmc-guide — 스타일은 .wc-insight-box 공통 클래스로 적용 */
.wc-pmc-guide:empty { display: none; }

/* ── 칼로리↔체중 상관관계 인사이트 (Section 2) ── */
/* .wc-cal-corr — 스타일은 .wc-insight-box 공통 + 고유 accent 색상 */
.wc-cal-corr {
  border-left-color: var(--sport-color-walk, #009E73);
}
.wc-cal-corr[style*="display: block"] { display: block; }
.wc-cal-corr:empty { display: none; }
.wc-cal-corr-title {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--color-text-primary);
}
.wc-cal-corr-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  background: var(--sport-color-walk, #009E73);
  color: #fff;
}
.wc-cal-corr-text {
  margin: 0 0 6px;
}
.wc-cal-corr-meta {
  margin: 0;
  font-size: 11px;
  color: var(--color-text-tertiary);
}

/* ──────────────────────────────────────────────
   8. W/kg 기여도 (Section 3)
   ────────────────────────────────────────────── */
/* .wc-wkg-contrib — 스타일은 .wc-insight-box 공통 클래스로 적용 */
.wc-wkg-contrib:empty { display: none; }

/* ──────────────────────────────────────────────
   9. 목표 시뮬레이터 (Section 6)
   ────────────────────────────────────────────── */
.wc-sim-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* 현재 수치 행 */
.wc-sim-current {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.wc-sim-cur-item {
  flex: 1;
  min-width: 120px;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* accent border: 3px로 KPI 카드와 통일 */
.wc-sim-cur-item--accent {
  border-color: var(--color-primary-muted);
  border-top: 3px solid var(--color-primary);
}

.wc-sim-cur-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.wc-sim-cur-val {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
}

/* 목표 W/kg 입력 */
.wc-sim-input-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.wc-sim-input-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.wc-sim-input {
  width: 100px;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
  outline: none;
  font-family: var(--font-primary);
  transition: border-color 0.12s;
}
.wc-sim-input:focus {
  border-color: var(--color-primary);
  outline: 2px solid rgba(232,69,10,0.15);
  outline-offset: 0;
}

/* 시뮬레이터 저장/수정 버튼 */
.wc-sim-save-btn {
  padding: 6px 14px;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-primary);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.12s, border-color 0.12s;
}
.wc-sim-save-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
}
.wc-sim-save-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 시뮬레이터 결과 출력 영역 */
.wc-sim-out {
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  min-height: 80px;
}

/* 달성 경로 카드 3개 */
.wc-sim-paths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.wc-sim-path-card {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.wc-sim-path-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.wc-sim-path-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.wc-sim-path-desc {
  font-size: 11px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ──────────────────────────────────────────────
   10. 월별 히트맵 (Section 7)
   ────────────────────────────────────────────── */
.wc-heatmap-wrap {
  overflow-x: auto;
  margin-top: var(--space-2);
}

.wc-heatmap-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 12px;
}

.wc-heatmap-table th {
  padding: 6px 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  text-align: center;
  white-space: nowrap;
}
.wc-heatmap-table th:first-child { text-align: left; }

.wc-heatmap-table td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--color-border-light);
  text-align: center;
  vertical-align: middle;
  color: var(--color-text-primary);
  font-weight: 500;
  transition: background 0.1s;
  white-space: nowrap;
}
.wc-heatmap-table td:first-child {
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  padding-left: var(--space-2);
}

/* W/kg 강도에 따른 배경색 (JS에서 인라인으로 적용) */
.wc-heatmap-table td.wc-hm-cell {
  font-size: 12px;
}

/* 빈 셀 */
.wc-heatmap-table td.wc-hm-empty {
  color: var(--color-text-disabled);
}

/* ──────────────────────────────────────────────
   11. 로딩 / 빈 상태
   ────────────────────────────────────────────── */
.wc-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
  gap: 16px;
}

.wc-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.wc-loading-text {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

.wc-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 14px;
}
.wc-empty.hidden { display: none; }

.wc-empty-sub {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 6px;
}

.wc-empty-link {
  margin-top: var(--space-3);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
}
.wc-empty-link:hover { text-decoration: underline; }

/* ──────────────────────────────────────────────
   12. 데이터 인사이트 패널
   ────────────────────────────────────────────── */
.wc-insight-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-5);
}

.wc-insight-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin: 0 0 var(--space-3);
}

.wc-insight-block {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.85;
}

.wc-insight-block + .wc-insight-block {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.wc-insight-block p {
  margin: 0 0 var(--space-1);
}
.wc-insight-block p:last-child { margin-bottom: 0; }

.wc-insight-block strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

.wc-insight-list {
  list-style: none;
  margin: var(--space-2) 0;
  padding: 0;
}

.wc-insight-list li {
  padding: 2px 0 2px 20px;
  position: relative;
}

.wc-insight-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-tertiary);
}

/* ──────────────────────────────────────────────
   13. 체중 히스토리 편집 패널 (오너 전용)
   ────────────────────────────────────────────── */

/* 입력 바 내 수정 토글 버튼 */
.wc-history-toggle-btn {
  white-space: nowrap;
}

/* 패널 전체 */
.wc-history-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: none;           /* 입력 바와 시각적으로 연결 */
  border-left: 3px solid var(--color-border-strong);
  margin-top: calc(-1 * var(--space-5)); /* 입력 바 margin-bottom 상쇄 */
  margin-bottom: var(--space-5);
  overflow: hidden;
}

/* 패널 헤더 */
.wc-history-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}

.wc-history-panel-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.wc-history-panel-count {
  font-size: 11px;
  color: var(--color-text-tertiary);
}

/* 히스토리 테이블 */
.wc-history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.wc-history-table th {
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  text-align: left;
  white-space: nowrap;
}

.wc-history-table th:last-child { text-align: right; }

.wc-history-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
  font-weight: 500;
  vertical-align: middle;
  white-space: nowrap;
}

.wc-history-table tr:last-child td { border-bottom: none; }
.wc-history-table tbody tr:hover td { background: var(--color-surface-hover); }

/* 날짜 열 — 약간 muted */
.wc-history-table td.wc-hist-date {
  color: var(--color-text-secondary);
  font-size: 12px;
  width: 120px;
}

/* 체중 열 */
.wc-history-table td.wc-hist-weight {
  font-weight: 600;
  width: 100px;
}

/* 액션 열 */
.wc-history-table td.wc-hist-actions {
  text-align: right;
}

/* 버튼 그룹 */
.wc-hist-btn-group {
  display: inline-flex;
  gap: var(--space-1);
  justify-content: flex-end;
}

/* 공통 액션 버튼 */
.wc-hist-btn {
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-family: var(--font-primary);
  transition: background 0.1s, border-color 0.1s;
  white-space: nowrap;
}
.wc-hist-btn:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
}
.wc-hist-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 저장 강조 */
.wc-hist-btn--save {
  color: var(--color-green);
  border-color: rgba(76,175,80,0.35);
}
.wc-hist-btn--save:hover {
  background: rgba(76,175,80,0.07);
  border-color: var(--color-green);
}

/* 삭제 경고 */
.wc-hist-btn--delete {
  color: var(--color-red);
  border-color: rgba(244,67,54,0.3);
}
.wc-hist-btn--delete:hover {
  background: rgba(244,67,54,0.07);
  border-color: var(--color-red);
}

/* 인라인 편집 입력 필드 */
.wc-hist-input {
  padding: 3px 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 13px;
  font-family: var(--font-primary);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color 0.12s;
}
.wc-hist-input:focus {
  border-color: var(--color-primary);
  outline: 2px solid rgba(232,69,10,0.12);
  outline-offset: 0;
}
.wc-hist-input--date  { width: 128px; }
.wc-hist-input--kg    { width: 80px; }
.wc-hist-input.error  { border-color: var(--color-red); }

/* 패널 안 row 오버레이 (저장 중) */
.wc-history-table tr.is-saving td { opacity: 0.5; }

/* ── 태블릿 (768~1023px) ── */
@media (min-width: 768px) and (max-width: 1023px) {
  .wc-sim-paths {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .wc-content {
    padding: var(--space-5) var(--space-3);
  }

  .wc-kpi-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .wc-section-card {
    padding: var(--space-4) var(--space-3);
  }

  .wc-sim-paths {
    grid-template-columns: 1fr;
  }

  .wc-sim-cur-item {
    min-width: 90px;
  }

  .wc-pmc-legend {
    gap: var(--space-2);
  }
}

@media (max-width: 480px) {
  .wc-kpi-value {
    font-size: 22px;
  }

  .wc-input-bar {
    flex-wrap: wrap;
    gap: var(--space-2);
  }
}