/* 탄소 발자국 계산기 CSS */

/* ===== CSS 변수 정의 ===== */
.carbon-footprint-calculator-container {
  /* 배경색 */
  --bg-primary: #f5f5f0;
  --bg-secondary: #fff;
  --bg-section: #fff;
  
  /* 테두리 */
  --border-color: #333;
  
  /* 텍스트 */
  --text-primary: #222;
  --text-secondary: #555;
  --text-light: #666;
  
  /* 브랜드 색상 */
  --color-accent: #3498db;
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-danger: #e74c3c;
  --color-purple: #9b59b6;
  --color-teal: #1abc9c;
  
  /* 그림자 */
  --shadow-sm: 2px 2px 0 rgba(0,0,0,0.1);
  --shadow-md: 4px 4px 0 rgba(0,0,0,0.15);
  --shadow-lg: 8px 8px 0 rgba(0,0,0,0.15);
  
  /* 입력 포커스 */
  --input-focus-bg: #fffacd;
  
  /* 헤더 타이틀 */
  --title-color: #2c3e50;
  --title-shadow: 2px 2px 0 rgba(255,255,255,0.5);
  
  /* 버튼 호버 */
  --btn-hover-overlay: rgba(0,0,0,0.1);
  
  /* 복사 버튼 */
  --copy-btn-bg: #fff;
  --copy-btn-hover-bg: #f0f0f0;
}

/* 다크모드 */
.carbon-footprint-calculator-container.dark {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2d2d2d;
  --bg-section: #2d2d2d;
  --border-color: #e0e0e0;
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-light: #909090;
  --color-accent: #5dade2;
  --color-success: #52c77a;
  --color-warning: #f5b041;
  --color-danger: #ec7063;
  --color-purple: #af7ac5;
  --color-teal: #48d1cc;
  --shadow-sm: 2px 2px 0 rgba(255,255,255,0.08);
  --shadow-md: 4px 4px 0 rgba(255,255,255,0.12);
  --shadow-lg: 8px 8px 0 rgba(255,255,255,0.12);
  --input-focus-bg: #3a3a3a;
  --title-color: #7fb3d5;
  --title-shadow: 2px 2px 0 rgba(0,0,0,0.5);
  --btn-hover-overlay: rgba(255,255,255,0.1);
  --copy-btn-bg: #3a3a3a;
  --copy-btn-hover-bg: #4a4a4a;
}

/* ===== 전역 box-sizing ===== */
.carbon-footprint-calculator-container,
.carbon-footprint-calculator-container *,
.carbon-footprint-calculator-container *::before,
.carbon-footprint-calculator-container *::after {
  box-sizing: border-box;
}

/* ===== 메인 컨테이너 ===== */
.carbon-footprint-calculator-container {
  position: relative;
  max-width: 1180px;
  width: 100%;
  margin: 15px auto;
  padding: 12px;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  font-family: 'Noto Sans KR', 'Malgun Gothic', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  box-shadow: var(--shadow-lg);
  line-height: 1.5;
}

/* ===== 다크모드 토글 버튼 ===== */
.dark-mode-toggle {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.15);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  z-index: 10;
}

.dark-mode-toggle:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.15);
}

.dark-mode-toggle:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* ===== 헤더 ===== */
.calculator-header {
  text-align: center;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 3px double var(--border-color);
}

.calculator-header h2 {
  margin: 0 0 6px 0;
  font-size: 28px;
  font-weight: 700;
  color: var(--title-color);
  text-shadow: var(--title-shadow);
  line-height: 1.2;
}

.subtitle {
  margin: 0;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.4;
}

/* ===== 바디 레이아웃 ===== */
.calculator-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.input-container,
.result-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ===== 섹션 공통 스타일 ===== */
.input-section,
.result-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 12px;
  box-shadow: var(--shadow-md);
}

.section-title {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 10px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
}

.result-section .section-title {
  color: var(--color-success);
}

/* ===== 입력 그룹 ===== */
.input-group {
  margin-bottom: 12px;
}

.input-group:last-child {
  margin-bottom: 0;
}

.input-group label {
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.input-group input[type="number"],
.input-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: 'Courier New', monospace;
  transition: all 0.2s;
}

.input-group input[type="number"]:focus,
.input-group select:focus {
  outline: none;
  background: var(--input-focus-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.input-hint {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-light);
}

/* ===== 입력 그리드 ===== */
.input-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 8px;
}

.small-label {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
}

.input-grid input {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 13px;
  font-family: 'Courier New', monospace;
  transition: all 0.2s;
}

.input-grid input:focus {
  outline: none;
  background: var(--input-focus-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

/* ===== 결과 메인 ===== */
.result-main {
  text-align: center;
  padding: 20px;
}

.result-value-large {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-accent);
  font-family: 'Courier New', monospace;
  margin-bottom: 10px;
}

.result-value-large .unit {
  font-size: 24px;
  color: var(--text-secondary);
  margin-left: 4px;
}

.result-rating {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
  font-size: 16px;
}

.result-rating.excellent { color: var(--color-success); }
.result-rating.good { color: var(--color-teal); }
.result-rating.average { color: var(--color-warning); }
.result-rating.high { color: var(--color-danger); }
.result-rating.very-high { color: #c0392b; }

/* ===== 비교 분석 ===== */
.comparison-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.comparison-item {
  padding: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
}

.comparison-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.comparison-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-accent);
  font-family: 'Courier New', monospace;
  margin-bottom: 8px;
}

.comparison-bar {
  height: 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  overflow: hidden;
  margin-bottom: 4px;
}

.bar-fill {
  height: 100%;
  transition: width 0.5s ease;
}

.korean-bar { background: var(--color-accent); }
.world-bar { background: var(--color-success); }
.target-bar { background: var(--color-warning); }

.comparison-info {
  font-size: 11px;
  color: var(--text-light);
}

/* ===== 카테고리별 배출량 ===== */
.breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.breakdown-item {
  padding: 10px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
}

.breakdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.breakdown-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.breakdown-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  font-family: 'Courier New', monospace;
}

.breakdown-bar {
  height: 8px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.breakdown-bar .bar-fill {
  height: 100%;
  transition: width 0.5s ease;
}

.transport-bar { background: #3498db; }
.electricity-bar { background: #f39c12; }
.heating-bar { background: #e74c3c; }
.food-bar { background: #27ae60; }
.waste-bar { background: #95a5a6; }
.water-bar { background: #1abc9c; }

/* ===== 버튼 컨테이너 ===== */
.button-container {
  margin-bottom: 0;
}

.btn-calculate {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--color-accent);
  border: 1.5px solid var(--border-color);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 4px 4px 0 rgba(0,0,0,0.2);
  font-family: inherit;
  margin-bottom: 10px;
}

.btn-calculate:hover {
  transform: translate(1px, 1px);
  box-shadow: 3px 3px 0 rgba(0,0,0,0.2);
}

.btn-calculate:active {
  transform: translate(4px, 4px);
  box-shadow: none;
}

.sub-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-sample {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  background: var(--color-success);
  border: 1px solid var(--border-color);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.2);
  font-family: inherit;
  white-space: nowrap;
}

.btn-sample:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.2);
}

.btn-sample:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.btn-reset {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  background: var(--color-warning);
  border: 1px solid var(--border-color);
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.2);
  font-family: inherit;
}

.btn-reset:hover {
  transform: translate(0.5px, 0.5px);
  box-shadow: 1.5px 1.5px 0 rgba(0,0,0,0.2);
}

.btn-reset:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

/* ===== 토스트 알림 ===== */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  display: none;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  max-width: 400px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 1000;
  animation: slideIn 0.3s ease;
}

.toast.show {
  display: flex;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast-icon {
  font-size: 24px;
  line-height: 1;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.toast-message {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.toast.success .toast-icon { color: var(--color-success); }
.toast.error .toast-icon { color: var(--color-danger); }
.toast.warning .toast-icon { color: var(--color-warning); }
.toast.info .toast-icon { color: var(--color-accent); }

/* ===== 반응형 디자인 ===== */
@media (max-width: 768px) {
  .carbon-footprint-calculator-container {
    margin: 8px 5px;
    width: calc(100% - 10px);
    padding: 10px;
  }
  
  .calculator-body {
    grid-template-columns: 1fr;
  }
  
  .calculator-header h2 {
    font-size: 24px;
  }
  
  .subtitle {
    font-size: 14px;
  }
  
  .result-value-large {
    font-size: 36px;
  }
  
  .result-value-large .unit {
    font-size: 18px;
  }
  
  .sub-buttons {
    flex-direction: column;
  }
  
  .btn-sample,
  .btn-reset {
    width: 100%;
    justify-content: center;
  }
  
  .toast {
    left: 20px;
    right: 20px;
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .carbon-footprint-calculator-container {
    padding: 8px;
    border-width: 1px;
  }
  
  .input-section,
  .result-section {
    padding: 10px;
  }
  
  .calculator-header h2 {
    font-size: 20px;
  }
  
  .subtitle {
    font-size: 13px;
  }
  
  .section-title {
    font-size: 15px;
  }
  
  .input-group label {
    font-size: 13px;
  }
  
  .input-group input[type="number"],
  .input-group select {
    padding: 8px;
    font-size: 13px;
  }
  
  .input-grid {
    grid-template-columns: 1fr;
  }
  
  .result-value-large {
    font-size: 28px;
  }
  
  .result-value-large .unit {
    font-size: 16px;
  }
  
  .comparison-value {
    font-size: 20px;
  }
  
  .dark-mode-toggle {
    top: 8px;
    right: 8px;
    padding: 6px 10px;
    font-size: 12px;
  }
  
  .toast {
    left: 10px;
    right: 10px;
    top: 10px;
  }
}