/* ============================================
   千川赔付计算器页面
   ============================================ */

.calc-hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding: 140px 0 60px;
  position: relative;
  overflow: hidden;
}

.calc-hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.calc-hero-title {
  font-family: var(--font-heading);
  font-size: 48px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
  color: var(--color-text);
}

.calc-hero-desc {
  font-size: 18px;
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 640px;
}

/* ============================================
   计算器卡片
   ============================================ */

.calculator-section {
  padding: 40px 0 100px;
  position: relative;
}

.calculator-card {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}

.calculator-header {
  text-align: center;
  margin-bottom: 36px;
}

.calc-heading {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.calc-sub {
  font-size: 14px;
  color: var(--color-text-muted);
}

.calc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.calc-field--full {
  grid-column: 1 / -1;
}

/* ============================================
   投放场景选择
   ============================================ */

.scene-field {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.scene-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.scene-option {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.scene-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.scene-option:hover {
  border-color: rgba(139, 92, 246, 0.5);
}

.scene-option.is-active {
  border-color: var(--color-primary);
  background: rgba(139, 92, 246, 0.1);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.12);
}

.scene-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.scene-desc {
  font-size: 12px;
  line-height: 1.5;
  color: var(--color-text-muted);
  word-break: break-word;
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.calc-optional {
  margin-left: 6px;
  padding: 1px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 999px;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrap i {
  position: absolute;
  left: 16px;
  font-size: 16px;
  color: var(--color-primary);
  pointer-events: none;
}

.calc-input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  font-size: 16px;
  color: var(--color-text);
  transition: all var(--transition-normal);
  font-family: var(--font-body);
}

.calc-input::placeholder {
  color: var(--color-text-muted);
}

.calc-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
  outline: none;
}

/* 去除 number 输入的上下箭头，保持风格统一 */
.calc-input::-webkit-outer-spin-button,
.calc-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.calc-input[type=number] {
  -moz-appearance: textfield;
}

.calc-hint {
  font-size: 12px;
  color: var(--color-text-muted);
}

.calc-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

/* ============================================
   结果展示
   ============================================ */

.calc-result {
  margin-top: 36px;
  padding: 32px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  text-align: center;
  transition: all var(--transition-slow);
}

.calc-result.is-positive {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.06);
}

.calc-result.is-zero {
  border-color: rgba(245, 158, 11, 0.35);
  background: rgba(245, 158, 11, 0.05);
}

.result-label {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

/* 结果状态徽章 */
.result-status {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-muted);
}

.result-status.is-good {
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
}

.result-status.is-bad {
  background: rgba(245, 158, 11, 0.15);
  color: #FBBF24;
}

.result-value {
  font-family: var(--font-heading);
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: 12px;
  word-break: break-all;
}

.calc-result.is-positive .result-value {
  background: linear-gradient(135deg, #10B981, #34D399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.calc-result.is-zero .result-value {
  background: linear-gradient(135deg, #F59E0B, #FBBF24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-note {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.result-breakdown {
  display: none;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px dashed var(--glass-border);
  text-align: left;
  flex-direction: column;
  gap: 12px;
}

.breakdown-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
}

.breakdown-key {
  color: var(--color-text-muted);
}

.breakdown-val {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
}

/* ============================================
   公式说明
   ============================================ */

.formula-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--color-background) 0%, rgba(15, 23, 42, 0.9) 100%);
  position: relative;
}

.formula-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
}

.formula-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.formula-card {
  padding: 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-slow);
}

.formula-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: 0 20px 40px rgba(139, 92, 246, 0.12);
}

.formula-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-lg);
  font-size: 24px;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.formula-card-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.formula-card-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.formula-card-desc strong {
  color: var(--color-text-secondary);
}

/* 规则条目列表 */
.rule-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rule-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.rule-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8B5CF6, #EC4899);
}

.rule-list strong {
  color: var(--color-text-secondary);
}

.rule-sub {
  display: block;
  margin-top: 6px;
  padding-left: 10px;
  border-left: 2px solid rgba(139, 92, 246, 0.4);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.formula {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}

.formula-line {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.formula-op {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
}

/* ============================================
   响应式
   ============================================ */

@media (max-width: 768px) {
  .calc-hero {
    min-height: auto;
    padding: 120px 0 40px;
  }

  .calc-hero-title {
    font-size: 30px;
  }

  .calc-hero-desc {
    font-size: 15px;
  }

  .calculator-card {
    padding: 28px 20px;
  }

  .calc-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .scene-options {
    grid-template-columns: 1fr;
  }

  .calc-actions {
    flex-direction: column;
  }

  .calc-actions .btn {
    width: 100%;
  }

  .result-value {
    font-size: 34px;
  }

  .formula-grid {
    grid-template-columns: 1fr;
  }

  .breakdown-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

@media (max-width: 480px) {
  .calc-hero-title {
    font-size: 26px;
  }

  .calculator-card {
    padding: 24px 16px;
  }

  .result-value {
    font-size: 30px;
  }
}