/* 计算工具模块样式 */
/* 品牌色：--primary: #1a365d（深蓝），--accent: #e8a838（金色） */

:root {
  --primary: #1a365d;
  --primary-light: #2a4a7f;
  --accent: #e8a838;
  --accent-light: #f0c060;
  --bg: #fafafa;
  --bg-white: #ffffff;
  --text: #2d3748;
  --text-light: #718096;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --radius: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 页面 Hero 横幅 ===== */
.page-hero {
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #1a5276 100%);
  color: #fff; position: relative; overflow: hidden;
  padding: 140px 32px 80px;
}
.page-hero::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(232,168,56,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero-inner {
  max-width: 1200px; margin: 0 auto; position: relative; z-index: 1;
}
.page-hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.1); backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 10px 24px; border-radius: 30px;
  font-size: 18px; font-weight: 600; margin-bottom: 24px;
}
.page-hero-badge-dot {
  width: 8px; height: 8px; background: var(--accent); border-radius: 50%;
  animation: pulse 2s infinite;
}
.page-hero h1 {
  font-size: 42px; font-weight: 900; line-height: 1.2;
  margin-bottom: 16px;
}
.page-hero h1 span { color: var(--accent); }
.page-hero-sub {
  font-size: 18px; color: rgba(255,255,255,0.75);
  max-width: 560px; line-height: 1.8;
}

/* ===== 计算器列表页卡片网格 ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* ===== 计算器入口卡片 ===== */
.tool-card {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 36px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  text-decoration: none;
  color: var(--text);
  display: block;
  position: relative;
  overflow: hidden;
}
.tool-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: var(--transition);
  transform-origin: left;
}
.tool-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.tool-card:hover::before {
  transform: scaleX(1);
}
.tool-card-icon {
  font-size: 40px;
  margin-bottom: 20px;
  display: block;
}
.tool-card h3 {
  font-size: 20px; font-weight: 700; color: var(--primary);
  margin-bottom: 8px;
}
.tool-card p {
  font-size: 14px; color: var(--text-light); line-height: 1.6;
}
.tool-card-arrow {
  display: inline-block;
  margin-top: 16px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}
.tool-card:hover .tool-card-arrow {
  transform: translateX(4px);
}

/* ===== 即将上线卡片 ===== */
.tool-card-coming {
  background: var(--bg);
  border-radius: 12px;
  padding: 36px 28px;
  border: 1px dashed var(--border);
  text-align: center;
  opacity: 0.7;
  position: relative;
}
.tool-card-coming-badge {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(26,54,93,0.06);
  color: var(--primary);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.tool-card-coming h4 {
  font-size: 16px; font-weight: 600; color: var(--text);
  margin-bottom: 4px;
}
.tool-card-coming p {
  font-size: 13px; color: var(--text-light);
}

/* ===== 计算器主容器 ===== */
.calc-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* ===== 输入区域 ===== */
.calc-input-area {
  background: var(--bg-white);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 32px;
}
.calc-input-area h3 {
  font-size: 20px; font-weight: 700; color: var(--primary);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

/* ===== 输入项组 ===== */
.calc-input-group {
  margin-bottom: 20px;
}
.calc-input-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.calc-input-group .calc-unit {
  font-size: 12px;
  color: var(--text-light);
  font-weight: 400;
  margin-left: 4px;
}
.calc-input-row {
  display: flex;
  align-items: center;
  gap: 0;
}
.calc-input-row .calc-input {
  flex: 1;
  border-radius: 6px 0 0 6px;
}
.calc-input-suffix {
  display: flex;
  align-items: center;
  padding: 0 14px;
  height: 44px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: none;
  border-radius: 0 6px 6px 0;
  font-size: 14px;
  color: var(--text-light);
  font-weight: 500;
  white-space: nowrap;
}

/* ===== 输入框 ===== */
.calc-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: var(--transition);
  outline: none;
}
.calc-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,54,93,0.1);
}
.calc-input::placeholder {
  color: #cbd5e0;
}

/* ===== 下拉框 ===== */
.calc-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: var(--transition);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23718096' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}
.calc-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,54,93,0.1);
}

/* ===== 计算按钮 ===== */
.calc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 36px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}
.calc-btn:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26,54,93,0.3);
}
.calc-btn-full {
  width: 100%;
}
.calc-btn-reset {
  background: transparent;
  color: var(--text-light);
  border: 1px solid var(--border);
}
.calc-btn-reset:hover {
  background: var(--bg);
  color: var(--text);
  box-shadow: none;
}

/* ===== 结果区域 ===== */
.calc-result-area {
  background: var(--bg-white);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 32px;
}
.calc-result-area h3 {
  font-size: 20px; font-weight: 700; color: var(--primary);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.calc-result-empty {
  text-align: center;
  padding: 48px 0;
  color: var(--text-light);
  font-size: 15px;
}
.calc-result-empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.3;
}

/* ===== 结果卡片网格 ===== */
.calc-result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* ===== 结果卡片 ===== */
.calc-result-card {
  background: var(--bg);
  border-radius: 10px;
  padding: 20px;
  border: 1px solid var(--border);
  text-align: center;
}
.calc-result-card.primary {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-color: var(--primary);
}
.calc-result-card.primary .calc-result-label {
  color: rgba(255,255,255,0.7);
}
.calc-result-card.primary .calc-result-value {
  color: #fff;
}
.calc-result-card.accent {
  background: linear-gradient(135deg, rgba(232,168,56,0.08), rgba(232,168,56,0.02));
  border-color: var(--accent);
}
.calc-result-card.accent .calc-result-value {
  color: var(--accent);
}
.calc-result-value {
  font-size: 32px;
  font-weight: 900;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 4px;
}
.calc-result-unit {
  font-size: 16px;
  font-weight: 500;
  opacity: 0.7;
  margin-left: 2px;
}
.calc-result-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

/* ===== 选型建议区 ===== */
.calc-suggestion {
  margin-top: 24px;
  padding: 20px;
  background: linear-gradient(135deg, rgba(232,168,56,0.08), rgba(232,168,56,0.02));
  border-radius: 10px;
  border: 1px solid rgba(232,168,56,0.2);
}
.calc-suggestion h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.calc-suggestion-list {
  list-style: none;
}
.calc-suggestion-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.calc-suggestion-list li:last-child {
  border-bottom: none;
}
.calc-suggestion-list .sug-label {
  font-weight: 600;
  color: var(--primary);
  min-width: 60px;
}
.calc-suggestion-list .sug-value {
  color: var(--accent);
  font-weight: 700;
}

/* ===== 校核提示 ===== */
.calc-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 18px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.6;
  margin-top: 16px;
}
.calc-alert-icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}
.calc-alert.info {
  background: rgba(49,130,206,0.08);
  border: 1px solid rgba(49,130,206,0.2);
  color: #2b6cb0;
}
.calc-alert.info .calc-alert-icon {
  color: #3182ce;
}
.calc-alert.warning {
  background: rgba(232,168,56,0.08);
  border: 1px solid rgba(232,168,56,0.25);
  color: #975a16;
}
.calc-alert.warning .calc-alert-icon {
  color: #e8a838;
}
.calc-alert.success {
  background: rgba(56,161,105,0.08);
  border: 1px solid rgba(56,161,105,0.2);
  color: #276749;
}
.calc-alert.success .calc-alert-icon {
  color: #38a169;
}

/* ===== 计算器内子Tab ===== */
.calc-tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
}
.calc-tab {
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  border: none;
  background: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  font-family: inherit;
}
.calc-tab:hover {
  color: var(--primary);
}
.calc-tab.active {
  color: var(--primary);
  border-bottom-color: var(--accent);
}

/* ===== 计算器标题行 ===== */
.calc-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.calc-title-row h3 {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* ===== 响应式：900px ===== */
@media (max-width: 900px) {
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .calc-container {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .page-hero {
    padding: 100px 24px 60px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .calc-result-grid {
    grid-template-columns: 1fr;
  }
  .calc-result-card.primary {
    grid-column: 1;
  }
}

/* ===== 响应式：600px ===== */
@media (max-width: 600px) {
  .tools-grid {
    grid-template-columns: 1fr;
  }
  .calc-input-area,
  .calc-result-area {
    padding: 20px;
  }
  .calc-result-value {
    font-size: 26px;
  }
  .page-hero {
    padding: 90px 20px 50px;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .page-hero-sub {
    font-size: 15px;
  }
  .calc-container {
    gap: 16px;
  }
  .tool-card {
    padding: 28px 20px;
  }
}

/* ===== 动画 ===== */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-up {
  opacity: 0;
}
.fade-up.visible {
  animation: fadeUp 0.6s ease forwards;
}

/* ===== 通用区块（复用于工具页） ===== */
.section {
  padding: 100px 32px;
}
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(26,54,93,0.06);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-desc {
  font-size: 17px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== 即将上线预告区 ===== */
.coming-soon-section {
  background: var(--bg);
}
.coming-soon-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
@media (max-width: 900px) {
  .coming-soon-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .coming-soon-grid {
    grid-template-columns: 1fr;
  }
}