/* ============================================================
   产品服务页样式(products.html) — 适配官网深色商务蓝主题
   布局承袭 ERP.html: 头部统计栏 + 搜索框 + 模块卡片网格 + 返回顶部
   模块卡片强调色由 JS 按顺序从调色板分配(--module-color 等 CSS 变量)
   ============================================================ */

/* ── 页面头部(品牌 + 标题 + 统计) ── */
.prod-header {
  position: relative;
  padding: 72px 0 96px;
  overflow: hidden;
  background:
    radial-gradient(700px 320px at 85% -20%, rgba(74, 12, 140, 0.3), transparent 65%),
    radial-gradient(600px 300px at 5% 110%, rgba(34, 211, 238, 0.1), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}

.prod-header-inner {
  position: relative;
  z-index: 2;
  padding: 0 24px;
}

.prod-brand {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--cyan);
  margin-bottom: 16px;
}

.prod-title {
  font-family: var(--font-display);
  font-size: clamp(30px, 5vw, 44px);
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.prod-subtitle {
  color: var(--text-2);
  font-size: clamp(14px, 2vw, 16px);
  max-width: 640px;
  margin-bottom: 36px;
}

/* 统计栏 */
.stats-bar {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.2;
}

.stat-label {
  font-size: 13px;
  color: var(--text-2);
}

/* ── 搜索区 ── */
.search-section {
  margin-top: -44px;
  position: relative;
  z-index: 3;
}

.search-box {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px var(--shadow);
  padding: 16px 20px;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.search-input-wrap {
  flex: 1;
  min-width: 240px;
  position: relative;
}

.search-input-wrap svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  stroke: var(--text-2);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 11px 14px 11px 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.18);
}

.search-input::placeholder {
  color: var(--text-2);
}

.filter-info {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 13px;
  color: var(--text-2);
  white-space: nowrap;
}

.filter-count strong {
  color: var(--cyan);
  font-weight: 600;
  font-family: var(--font-mono);
}

.clear-btn {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: transparent;
  color: var(--text-2);
  font-size: 13px;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.15s ease;
}

.clear-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.clear-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── 主内容区 ── */
.prod-main {
  padding: 48px 0 96px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--primary);
  border-radius: 2px;
}

.section-meta {
  font-size: 13px;
  color: var(--text-2);
}

/* ── 模块卡片网格 ── */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.module-card {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.module-card:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.35);
  box-shadow: 0 14px 34px var(--shadow);
}

.module-card.hidden {
  display: none;
}

.module-header {
  padding: 18px 20px;
  border-left: 4px solid var(--module-color, var(--primary));
  background: linear-gradient(90deg, var(--module-bg, rgba(74, 108, 247, 0.08)) 0%, transparent 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.module-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.module-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: var(--module-color, var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 15px;
  line-height: 1;
}

.module-count {
  font-size: 12px;
  font-weight: 500;
  color: var(--module-color, var(--primary));
  background: var(--module-badge-bg, rgba(74, 108, 247, 0.15));
  padding: 3px 10px;
  border-radius: 20px;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.module-body {
  padding: 16px 20px 20px;
  flex: 1;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.feature-tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  background: var(--tag-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 12.5px;
  color: var(--text-2);
  transition: all 0.15s ease;
  cursor: default;
  line-height: 1.4;
}

.feature-tag:hover {
  background: var(--module-bg, rgba(74, 108, 247, 0.08));
  border-color: var(--module-color, var(--primary));
  color: var(--module-color, var(--primary));
}

.feature-tag.highlight {
  background: var(--hl-bg);
  border-color: #f59e0b;
  color: var(--hl-text);
  font-weight: 500;
}

.feature-tag.hidden {
  display: none;
}

.feature-empty {
  font-size: 12.5px;
  color: var(--text-2);
}

/* 规划中模块(空功能点): 半透明 + 虚线 */
.module-card.planning {
  opacity: 0.55;
  border-style: dashed;
}

.module-card.planning .module-header {
  border-left-style: dashed;
}

.planning-badge {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-2);
  background: var(--badge-bg);
  padding: 3px 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
}

/* 空状态(搜索无结果 / 无数据) */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  display: none;
}

.empty-state.show {
  display: block;
}

.empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.empty-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--text-2);
}

.empty-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
}

.empty-desc {
  font-size: 13px;
  color: var(--text-2);
}

.products-error {
  color: var(--text-2);
  padding: 40px 0;
  text-align: center;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
  .prod-header {
    padding: 56px 0 84px;
  }
  .stats-bar {
    gap: 28px;
  }
  .search-section {
    margin-top: -36px;
  }
  .search-box {
    padding: 14px 16px;
    gap: 12px;
  }
  .modules-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .module-header {
    padding: 14px 16px;
  }
  .module-body {
    padding: 12px 16px 16px;
  }
}

@media (max-width: 480px) {
  .filter-info {
    width: 100%;
    justify-content: space-between;
  }
}

/* ── 尊重系统减弱动效 ── */
@media (prefers-reduced-motion: reduce) {
  .module-card:hover {
    transform: none;
  }
}