/* 竹林映画 (Bamboo Cinema) 专属样式表 */
/* 基础变量与重置 */
:root {
    --bc-primary: #2E7D32;
    --bc-bg-light: #E8F5E9;
    --bc-bg-white: #FFFDE7;
    --bc-text-ink: #1B2631;
    --bc-border: #A5D6A7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bc-bg-light);
    color: var(--bc-text-ink);
    font-family: "STZhongsong", "SimSun", serif;
    line-height: 1.6;
}

a {
    color: var(--bc-text-ink);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--bc-primary);
}

/* 布局容器 */
.bc-container {
    width: 1200px;
    margin: 0 auto;
    background-color: var(--bc-bg-white);
    border-left: 1px solid var(--bc-border);
    border-right: 1px solid var(--bc-border);
    min-height: 40vh; max-height: 60vh;
    padding: 0 20px;
}

/* 头部与导航 */
.bc-header {
    padding: 30px 0;
    text-align: center;
    border-bottom: 1px solid var(--bc-border);
    position: relative;
}

.bc-header::after {
    content: '';
    display: block;
    width: 100%;
    height: 2px;
    background: var(--bc-primary);
    margin-top: 20px;
}

.bc-logo img {
    max-width: 200px;
}

.bc-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
    padding: 0 50px;
}

.bc-nav-item {
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 2px;
}

.bc-search {
    position: absolute;
    right: 20px;
    top: 40px;
}

.bc-search-input {
    border: 1px solid var(--bc-border);
    background: transparent;
    padding: 5px 10px;
    border-radius: 0;
    font-family: inherit;
}

.bc-search-btn {
    background: var(--bc-primary);
    color: #fff;
    border: none;
    padding: 6px 15px;
    cursor: pointer;
    border-radius: 0;
}

/* 首页大图推荐 */
.bc-hero {
    margin: 30px 0;
    border: 1px solid var(--bc-border);
    padding: 10px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><text x="10" y="50" fill="%23A5D6A7" opacity="0.2" font-size="40">竹</text></svg>') repeat;
}

.bc-hero-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.bc-hero-title {
    text-align: center;
    font-size: 24px;
    padding: 15px 0;
    border-top: 1px solid var(--bc-border);
    margin-top: 10px;
}

/* 首页Tab切换区 */
.bc-tabs {
    margin: 40px 0;
}

.bc-tab-nav {
    display: flex;
    border-bottom: 1px solid var(--bc-border);
    margin-bottom: 20px;
}

.bc-tab-btn {
    padding: 10px 30px;
    cursor: pointer;
    font-size: 18px;
    border: 1px solid transparent;
    border-bottom: none;
    margin-right: 10px;
}

.bc-tab-btn.active {
    border-color: var(--bc-border);
    background-color: var(--bc-bg-white);
    color: var(--bc-primary);
    position: relative;
    bottom: -1px;
}

.bc-tab-content {
    display: none;
}

.bc-tab-content.active {
    display: block;
}

.bc-grid-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.bc-card {
    border: 1px solid var(--bc-border);
    padding: 10px;
    background: #fff;
}

.bc-card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.bc-card-title {
    margin-top: 10px;
    font-size: 16px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 列表页表格布局 */
.bc-table-list {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    counter-reset: rowNumber;
}

.bc-table-list tbody tr {
    counter-increment: rowNumber;
}

.bc-table-index::before {
    content: counter(rowNumber);
}

.bc-table-list th, .bc-table-list td {
    border: 1px solid var(--bc-border);
    padding: 12px;
    text-align: center;
}

.bc-table-list th {
    background-color: var(--bc-bg-light);
    color: var(--bc-primary);
}

.bc-table-thumb {
    width: 80px;
    height: 60px;
    object-fit: cover;
}

.bc-table-title {
    text-align: left !important;
}

/* 内容页书卷排版 */
.bc-article-layout {
    display: flex;
    margin: 30px 0;
    border-top: 1px solid var(--bc-border);
    padding-top: 30px;
}

.bc-article-main {
    flex: 1;
    padding: 0 60px;
    border-right: 1px dashed var(--bc-border);
    position: relative;
}

.bc-article-main::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--bc-border);
}

.bc-article-header {
    text-align: center;
    margin-bottom: 30px;
}

.bc-article-title {
    font-size: 28px;
    color: var(--bc-primary);
    margin-bottom: 15px;
}

.bc-article-meta {
    color: #666;
    font-size: 14px;
}

.bc-article-content {
    font-size: 16px;
    line-height: 2;
    text-indent: 2em;
}

.bc-article-content img {
    max-width: 100%;
    display: block;
    margin: 20px auto;
    border: 1px solid var(--bc-border);
    padding: 5px;
}

.bc-article-nav {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid var(--bc-border);
    display: flex;
    justify-content: space-between;
}

/* 侧边栏 */
.bc-sidebar {
    width: 300px;
    padding-left: 30px;
}

.bc-side-widget {
    margin-bottom: 30px;
    border: 1px solid var(--bc-border);
}

.bc-side-title {
    background: var(--bc-bg-light);
    padding: 10px 15px;
    font-size: 18px;
    color: var(--bc-primary);
    border-bottom: 1px solid var(--bc-border);
}

.bc-side-list {
    list-style: none;
    padding: 15px;
}

.bc-side-list li {
    margin-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bc-side-list li::before {
    content: '▪';
    color: var(--bc-primary);
    margin-right: 8px;
}

/* 分页 */
.bc-pagination {
    text-align: center;
    margin: 40px 0;
}

.bc-pagination a, .bc-pagination span {
    display: inline-block;
    padding: 8px 15px;
    border: 1px solid var(--bc-border);
    margin: 0 5px;
    background: #fff;
}

.bc-pagination .current {
    background: var(--bc-primary);
    color: #fff;
    border-color: var(--bc-primary);
}

/* 底部 */
.bc-footer {
    border-top: 2px solid var(--bc-primary);
    padding: 40px 0;
    text-align: center;
    margin-top: 50px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><text x="10" y="50" fill="%23A5D6A7" opacity="0.1" font-size="40">影</text></svg>') repeat;
}

.bc-footer-links {
    margin-bottom: 20px;
}

.bc-footer-links a {
    margin: 0 10px;
}

.bc-footer-info p {
    margin-bottom: 10px;
    color: #666;
}


/* ========== 差异化特效 ========== */
/* 竹林映画 (bc-) CSS 特效 */

/* 动画: 竹子摇曳 */
@keyframes bc-bamboo-sway {
  0%, 100% { transform: rotate(-1deg); }
  50% { transform: rotate(1deg); }
}

/* 动画: 水墨扩散 */
@keyframes bc-ink-spread {
  from {
    transform: scale(0.5);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* 动画: 竹叶飘落 */
@keyframes bc-leaf-fall {
  0% {
    transform: translateY(-100%) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh) rotate(360deg);
    opacity: 0;
  }
}

/* 为需要摇曳的元素添加此类 */
.bc-sway {
  animation: bc-bamboo-sway 5s ease-in-out infinite;
}

/* 卡片基础样式 */
.bc-card {
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: 1px solid transparent;
}

/* 卡片hover: 水墨晕染边框效果 */
.bc-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1), 0 0 0 4px rgba(76, 94, 80, 0.2);
}

/* 导航链接基础样式 */
.bc-nav-link {
  position: relative;
  text-decoration: none;
  color: #333;
  padding-bottom: 5px;
  transition: color 0.3s ease;
}

/* 链接hover: 毛笔书写下划线效果 */
.bc-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: #4C5E50; /* 翠绿 */
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s cubic-bezier(0.76, 0, 0.24, 1);
}

.bc-nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.bc-nav-link:hover {
  color: #4C5E50;
}

/* 按钮hover: 轻微放大和颜色变化 */
.bc-button {
  background-color: #F0EAD6; /* 米白 */
  color: #333;
  border: 1px solid #4C5E50;
  transition: all 0.3s ease;
}

.bc-button:hover {
  background-color: #4C5E50;
  color: #fff;
  transform: scale(1.05);
}

/* 图片hover: 水墨滤镜和轻微放大 */
.bc-image-wrapper img {
  transition: transform 0.4s ease, filter 0.4s ease;
  filter: grayscale(20%);
}

.bc-image-wrapper:hover img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

/* 标题hover: 文字颜色渐变 */
.bc-title {
  transition: color 0.3s ease-in-out;
}

.bc-title:hover {
  color: #4C5E50;
}