/*
 * case.css — 案例相关页面公共样式
 * 适用页面：customer.html（案例列表）、case-basic.html 及所有案例详情页
 */

/* ============================================================
   1. 滚动入场动画
   ============================================================ */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============================================================
   2. 案例详情页 — 深色 Hero
   ============================================================ */
.page-hero {
  position: relative;
  padding: 32px 5vw 28px;
  background: var(--c-navy);
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 100% at 100% 0%, rgba(230,48,39,.18) 0%, transparent 60%),
    radial-gradient(ellipse 40% 80%  at 0% 100%, rgba(58,140,204,.15) 0%, transparent 60%),
    linear-gradient(135deg, #1a2e4a 0%, #253d60 100%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: caseGridMove 22s linear infinite;
}
@keyframes caseGridMove {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 860px;
  padding: 30px 0;
}
.hero-breadcrumb {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  font-size: 12px; color: rgba(255,255,255,.38);
  margin-bottom: 14px;
}
.hero-breadcrumb a { color: rgba(255,255,255,.38); text-decoration: none; transition: color .2s; }
.hero-breadcrumb a:hover { color: rgba(255,255,255,.7); }
.hero-breadcrumb svg { opacity: .38; }
.hero-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600;
  padding: 4px 12px; border-radius: 20px;
  background: rgba(58,140,204,.25);
  border: 1px solid rgba(58,140,204,.45);
  color: rgba(255,255,255,.82);
}
.hero-tag.accent {
  background: rgba(230,48,39,.22);
  border-color: rgba(230,48,39,.50);
  color: #ff8a82;
}
.page-hero h1 {
  font-size: clamp(22px, 3.5vw, 40px);
  font-weight: 900; color: #fff;
  line-height: 1.25; margin-bottom: 22px;
  animation: caseFadeUp .7s ease both;
}
@keyframes caseFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero-contact {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
  padding: 10px 20px; border-radius: 12px;
  font-size: 13px; color: rgba(255,255,255,.72);
}
.hero-contact a { color: #ff8a82; }

/* ============================================================
   3. 案例详情页 — 双栏文章布局
   ============================================================ */
.article-wrap {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  max-width: 1920px;
  margin: 0 auto;
  padding: 64px 5vw 100px;
  align-items: start;
  /* border: 1px solid red; */
}
.article      { min-width: 0; }
.article-section { margin-bottom: 52px; }

/* 章节标题 */
.section-heading {
  font-size: 20px; font-weight: 800; color: var(--c-text);
  margin-bottom: 18px; padding-bottom: 12px;
  border-bottom: 2px solid var(--c-border);
  display: flex; align-items: center; gap: 10px;
}
.section-heading::before {
  content: ''; flex-shrink: 0;
  width: 4px; height: 21px; border-radius: 2px;
  background: linear-gradient(180deg, var(--c-primary), var(--c-blue));
}

/* 数据指标 */
.metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin: 28px 0; }
.metric-card {
  background: var(--c-bg-grey); border-radius: 14px;
  padding: 20px; text-align: center; border: 1px solid var(--c-border);
}
.metric-num  { font-size: 28px; font-weight: 900; color: var(--c-primary); line-height: 1; }
.metric-unit { font-size: 14px; font-weight: 700; color: var(--c-blue); }
.metric-lbl  { font-size: 12px; color: var(--c-text-muted); margin-top: 6px; line-height: 1.4; }

/* 正文 */
.article-body          { font-size: 15px; line-height: 1.9; color: var(--c-text); }
.article-body p        { margin-bottom: 14px; }
.article-body strong   { color: var(--c-primary); }

/* 图片块 */
.case-img-wrap {
  margin: 20px 0; border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,.10);
  border: 1px solid var(--c-border);
}
.case-img-wrap img           { 
  /* width: 100%;  */
  display: block; 
  transition: transform .5s; 
  /* margin: auto; */
}
.case-img-wrap:hover img     { transform: scale(1.015); }
.img-caption {
  font-size: 12px; color: var(--c-text-muted); text-align: center;
  padding: 10px 16px; background: var(--c-bg-grey);
  border-top: 1px solid var(--c-border);
}

/* 模块列表（两列网格） */
.module-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; margin: 20px 0; }
.module-item {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--c-bg-grey); border-radius: 12px; padding: 16px;
}
.module-dot {
  width: 8px; height: 8px;
  background: var(--c-primary); border-radius: 50%;
  flex-shrink: 0; margin-top: 6px;
}
.module-item strong { display: block; font-size: 13px; font-weight: 700; color: var(--c-text); margin-bottom: 4px; }
.module-item span   { font-size: 12px; color: var(--c-text-muted); line-height: 1.5; }

/* 上下篇导航 */
.case-nav {
  display: flex; justify-content: space-between; gap: 16px;
  margin-top: 60px; padding-top: 28px;
  border-top: 1px solid var(--c-border);
}
.case-nav-btn {
  flex: 1; display: flex; align-items: center; gap: 12px; min-width: 0;
  text-decoration: none; padding: 16px 20px;
  border: 1px solid var(--c-border); border-radius: 14px;
  transition: border-color .2s, box-shadow .2s;
}
.case-nav-btn:hover {
  border-color: var(--c-primary);
  box-shadow: 0 4px 16px rgba(230,48,39,.10);
}
.case-nav-btn.next  { flex-direction: row-reverse; text-align: right; }
.cn-label { font-size: 11px; color: var(--c-text-muted); display: block; margin-bottom: 4px; }
.cn-title {
  font-size: 13px; font-weight: 600; color: var(--c-text); line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.cn-arrow { flex-shrink: 0; color: var(--c-text-muted); transition: color .2s; }
.case-nav-btn:hover .cn-arrow { color: var(--c-primary); }

/* ============================================================
   4. 案例详情页 — 侧边栏联系人 / 相关链接 / 标题变体
   ============================================================ */
.contact-item {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--c-text);
  padding: 8px 0;
  border-bottom: 1px solid var(--c-border);
}
.contact-item:last-child { border-bottom: none; }
.contact-icon {
  width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0;
  background: rgba(230,48,39,.08); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
}
.contact-label { font-size: 11px; color: var(--c-text-muted); }
.contact-value { font-weight: 600; font-size: 13px; }

.related-link {
  display: flex; align-items: center; gap: 8px;
  text-decoration: none; color: var(--c-text);
  font-size: 13px; line-height: 1.5;
  padding: 10px 0; border-bottom: 1px solid var(--c-border);
  transition: color .2s;
}
.related-link:last-child  { border-bottom: none; }
.related-link:hover       { color: var(--c-primary); }
.related-link svg         { flex-shrink: 0; color: var(--c-text-muted); }
.related-link:hover svg   { color: var(--c-primary); }

/* 侧边栏小标题（uppercase 风格，区别于 components.css 的 sidebar-card-header） */
.sidebar-card-header-sm {
  font-size: 12px; font-weight: 700; color: var(--c-text-muted);
  text-transform: uppercase; letter-spacing: .08em;
  padding: 18px 20px 12px;
}
.sidebar-card-content { padding: 0 20px 18px; }

/* ============================================================
   5. 案例列表页 — 吸顶筛选栏
   ============================================================ */
.filter-bar-wrap {
  position: sticky;
  top: var(--nav-height);
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.filter-bar {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 5vw;
  display: flex;
  align-items: center;
}
.industry-tabs {
  display: flex; align-items: center; gap: 2px;
  flex: 1; overflow-x: auto; scrollbar-width: none;
  padding: 10px 0;
}
.industry-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  white-space: nowrap; flex-shrink: 0;
  padding: 6px 13px; border-radius: 20px;
  border: none; background: none;
  font-family: var(--font); font-size: 13px; font-weight: 500;
  color: var(--c-text-muted); cursor: pointer;
  transition: background .18s, color .18s;
  display: flex; align-items: center; gap: 4px;
}
.tab-btn:hover  { background: var(--c-bg-grey); color: var(--c-primary); }
.tab-btn.active { background: var(--c-primary); color: #fff; font-weight: 700; }
.tab-btn .cnt {
  font-size: 10px; background: rgba(255,255,255,.28);
  padding: 1px 5px; border-radius: 8px;
}
.tab-btn:not(.active) .cnt { background: rgba(230,48,39,.10); color: var(--c-primary); }

.filter-search {
  display: flex; align-items: center; gap: 7px;
  background: var(--c-bg-grey); border: 1px solid var(--c-border);
  border-radius: 20px; padding: 7px 14px;
  margin-left: 12px; flex-shrink: 0; width: 190px;
}
.filter-search svg { color: var(--c-text-muted); flex-shrink: 0; }
.filter-search input {
  border: none; background: none;
  font-family: var(--font); font-size: 13px; color: var(--c-text);
  width: 100%; outline: none;
}
.filter-search input::placeholder { color: var(--c-text-muted); }

.view-toggle { display: flex; gap: 3px; margin-left: 10px; }
.vt-btn {
  width: 30px; height: 30px;
  border: 1px solid var(--c-border); background: none;
  border-radius: 7px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-text-muted); transition: all .18s;
}
.vt-btn.active, .vt-btn:hover { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

/* ============================================================
   6. 案例列表页 — 新式卡片 & 列表视图
   ============================================================ */
.cases-main { max-width: 1360px; margin: 0 auto; padding: 28px 5vw 80px; }
.cases-count-bar { display: flex; align-items: center; margin-bottom: 18px; }
.cases-count-bar span  { font-size: 13px; color: var(--c-text-muted); }
.cases-count-bar strong { color: var(--c-primary); font-weight: 700; }

.cases-grid-c {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.case-card-c {
  background: #fff; border: 1px solid var(--c-border);
  border-radius: 12px; padding: 20px 18px;
  text-decoration: none; display: flex; flex-direction: column;
  position: relative; overflow: hidden;
  transition: border-color .22s, transform .22s, box-shadow .22s;
}
.case-card-c::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-blue));
  transform: scaleX(0); transform-origin: left; transition: transform .28s;
}
.case-card-c:hover {
  border-color: var(--c-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(230,48,39,.10);
}
.case-card-c:hover::before { transform: scaleX(1); }

.card-industry-tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: 10px;
  margin-bottom: 10px; width: fit-content;
}
.card-title-c {
  font-size: 13.5px; font-weight: 700; color: var(--c-text);
  line-height: 1.6; flex: 1; margin-bottom: 14px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.card-footer-c {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto; padding-top: 12px; border-top: 1px solid var(--c-border);
}
.card-tag-c   { font-size: 11px; color: var(--c-text-muted); }
.card-arrow-c {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--c-bg-grey); color: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: background .18s, transform .18s;
}
.case-card-c:hover .card-arrow-c { background: var(--c-primary); color: #fff; transform: translateX(3px); }

/* 行业色标 */
.ind-c-manufacturing { background: rgba(26,46,74,.08);  color: var(--c-navy); }
.ind-c-finance       { background: rgba(58,140,204,.10); color: var(--c-blue); }
.ind-c-energy        { background: rgba(230,140,0,.10);  color: #a06000; }
.ind-c-it            { background: rgba(100,60,200,.10); color: #6030b0; }
.ind-c-trade         { background: rgba(230,48,39,.10);  color: var(--c-primary); }
.ind-c-construction  { background: rgba(20,120,60,.10);  color: #156030; }
.ind-c-government    { background: rgba(10,90,200,.10);  color: #0a50c0; }
.ind-c-education     { background: rgba(100,10,220,.10); color: #6010b0; }
.ind-c-medical       { background: rgba(200,30,60,.10);  color: #b01030; }
.ind-c-logistics     { background: rgba(240,120,0,.10);  color: #906000; }

/* 列表视图 */
.cases-list-c { display: none; flex-direction: column; gap: 8px; }
.case-row-c {
  display: flex; align-items: center; gap: 14px;
  background: #fff; border: 1px solid var(--c-border);
  border-radius: 10px; padding: 13px 18px;
  text-decoration: none; transition: border-color .2s, box-shadow .2s;
}
.case-row-c:hover { border-color: var(--c-primary); box-shadow: 0 2px 12px rgba(230,48,39,.08); }
.row-title-c  { flex: 1; font-size: 14px; font-weight: 600; color: var(--c-text); line-height: 1.5; }
.row-arrow-c  { color: var(--c-text-muted); flex-shrink: 0; transition: transform .2s, color .2s; }
.case-row-c:hover .row-arrow-c { transform: translateX(4px); color: var(--c-primary); }

.case-card-c.hidden, .case-row-c.hidden { display: none !important; }
.no-results-c {
  grid-column: 1 / -1; text-align: center;
  padding: 64px 0; color: var(--c-text-muted); font-size: 15px; display: none;
}
.no-results-c svg { display: block; margin: 0 auto 16px; opacity: .3; }

/* ============================================================
   7. 案例详情页 — 侧边栏容器 & CTA（从 components.css 迁入）
   ============================================================ */
.article-sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 16px);
}

.sidebar-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.sidebar-card-header {
  background: var(--c-bg-grey);
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 700;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border);
}

.sidebar-card-body { padding: 6px 0; }

.sidebar-card-body ul { list-style: none; padding: 0; margin: 0; }

.sidebar-card-body li {
  padding: 0;
  border-bottom: 1px solid var(--c-bg-grey);
}

.sidebar-card-body li:last-child { border-bottom: none; }

.sidebar-card-body li a {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  padding: 10px 18px;
  color: var(--c-text);
  font-size: 13px;
  line-height: 1.5;
  transition: background var(--transition), color var(--transition);
}

.sidebar-card-body li a:hover { background: var(--c-primary-light); color: var(--c-primary); }

.sidebar-cta {
  background: linear-gradient(135deg, var(--c-navy), var(--c-navy-light));
  border-radius: var(--radius);
  padding: 22px 20px;
  text-align: center;
  margin-bottom: 20px;
  color: #fff;
}

.sidebar-cta h3 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 8px; }

.sidebar-cta p {
  font-size: 13px;
  color: rgba(255,255,255,.75);
  margin-bottom: 16px;
  line-height: 1.65;
}

/* ============================================================
   8. 案例列表页 — 卡片（旧版，从 components.css 迁入）
   ============================================================ */
.case-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.case-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }

.case-card-stripe {
  height: 4px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-blue));
}

.case-card-body {
  padding: 18px 20px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-card-title {
  font-size: 14.5px; font-weight: 600; color: var(--c-text);
  line-height: 1.5; margin-bottom: 8px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.case-card-title a { color: inherit; }
.case-card-title a:hover { color: var(--c-primary); }

.case-card-excerpt {
  font-size: 13px; color: var(--c-text-muted); line-height: 1.65; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 14px;
}

.case-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto; padding-top: 12px; border-top: 1px solid var(--c-bg-grey);
}

.case-read-more {
  font-size: 13px; color: var(--c-primary); font-weight: 500;
  display: flex; align-items: center; gap: 3px;
}

.case-read-more:hover { color: var(--c-primary-dark); }

/* ============================================================
   9. 案例列表页 — 筛选器 & 搜索框（旧版，从 components.css 迁入）
   ============================================================ */
.industry-filter { display: flex; flex-wrap: wrap; gap: 8px; padding: 24px 0; }

.filter-btn {
  padding: 7px 18px; border-radius: 20px;
  font-size: 13px; font-weight: 500;
  background: #fff; border: 1.5px solid var(--c-border);
  color: var(--c-text-muted); cursor: pointer;
  transition: all .2s; font-family: inherit;
}

.filter-btn:hover,
.filter-btn.active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

.search-bar { display: flex; gap: 8px; max-width: 380px; }

.search-bar input {
  flex: 1; padding: 9px 15px;
  border: 1.5px solid var(--c-border); border-radius: 6px;
  font-size: 14px; outline: none; font-family: inherit; transition: border-color .2s;
}

.search-bar input:focus       { border-color: var(--c-primary); }
.search-bar input::placeholder { color: #bbb; }

.search-bar button {
  padding: 9px 16px; background: var(--c-primary); color: #fff;
  border: none; border-radius: 6px; font-size: 14px; cursor: pointer;
  transition: background .2s; font-family: inherit;
  display: flex; align-items: center; gap: 5px;
}

.search-bar button:hover { background: var(--c-primary-dark); }

.cases-toolbar {
  display: flex; justify-content: space-between;
  align-items: flex-end; flex-wrap: wrap; gap: 16px; padding-bottom: 8px;
}

.cases-count    { font-size: 13px; color: var(--c-text-muted); }
.cases-grid-wrap { padding: 8px 16px 40px; }

/* ============================================================
   10. 分页导航
   ============================================================ */
.cases-pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; padding: 32px 0 8px; flex-wrap: wrap;
}
.pg-btn {
  min-width: 34px; height: 34px;
  border: 1px solid var(--c-border); border-radius: 8px;
  background: #fff; color: var(--c-text);
  font-size: 13px; font-weight: 500; font-family: var(--font);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  padding: 0 8px; transition: all .18s;
}
.pg-btn:hover:not([disabled]) { border-color: var(--c-primary); color: var(--c-primary); }
.pg-btn.active  { background: var(--c-primary); border-color: var(--c-primary); color: #fff; font-weight: 700; }
.pg-btn[disabled] { opacity: .35; cursor: default; }
.pg-ellipsis {
  min-width: 28px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  color: var(--c-text-muted); font-size: 14px;
}

/* ============================================================
   11. 响应式
   ============================================================ */
@media (max-width: 1200px) { .cases-grid-c { grid-template-columns: repeat(3,1fr); } }
@media (max-width: 991px) {
  .article-wrap        { grid-template-columns: 1fr; padding: 40px 5vw 60px; }
  .article-sidebar     { position: static !important; }
  .case-nav            { flex-direction: column; }
  .cases-grid-c        { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .cases-toolbar       { flex-direction: column; align-items: flex-start; }
  .search-bar          { max-width: 100%; width: 100%; }
  .industry-filter     { gap: 6px; }
  .filter-btn          { padding: 6px 13px; font-size: 12px; }
}
@media (max-width: 600px) {
  .metrics             { grid-template-columns: 1fr 1fr; }
  .module-list         { grid-template-columns: 1fr; }
  .cases-grid-c        { grid-template-columns: 1fr; }
  .filter-search       { width: 120px; }
}

/* ── cases-grid 自适应网格（替代 Bootstrap row/col） ─────── */
#cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  width: 100%;
}
@media (max-width: 991px) { #cases-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 575px) { #cases-grid { grid-template-columns: 1fr; } }