/* ============================================
   风行视频娱乐网站 - 公共样式
   ============================================ */

/* CSS 变量定义 */
:root {
  /* 主题色 */
  --primary-color: #ff6600;
  --primary-dark: #e55a00;
  --primary-light: #ff8533;
  --bg-dark: #0a1628;
  --bg-card: #141d2b;
  --bg-hover: #1e293b;
  --bg-light: #243447;
  
  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: #b0b8c4;
  --text-muted: #6b7280;
  
  /* 边框 */
  --border-color: #2a3441;
  --border-light: #3d4d60;
  
  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 20px rgba(255,102,0,0.3);
  
  /* 字体 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  
  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* 重置样式 */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input, textarea {
  font-family: inherit;
  outline: none;
}

/* ============================================
   布局容器
   ============================================ */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* ============================================
   顶部导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(10, 22, 40, 0.98);
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

/* 导航菜单 */
.nav-menu {
  display: none;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-color);
  border-radius: var(--radius-sm);
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
}

/* 搜索框 */
.search-box {
  display: none;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xs) var(--spacing-sm);
  width: 280px;
  transition: all var(--transition-fast);
}

.search-box:focus-within {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

.search-box input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  padding: var(--spacing-xs);
}

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

.search-box button {
  color: var(--text-muted);
  padding: var(--spacing-xs);
  transition: color var(--transition-fast);
}

.search-box button:hover {
  color: var(--primary-color);
}

@media (min-width: 992px) {
  .search-box {
    display: flex;
  }
}

/* 用户操作区 */
.user-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.btn-login {
  font-size: 14px;
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  transition: color var(--transition-fast);
}

.btn-login:hover {
  color: var(--text-primary);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  font-size: 14px;
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  cursor: pointer;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu .search-box {
  display: flex;
  width: 100%;
  margin-bottom: var(--spacing-md);
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mobile-menu nav a {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 16px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.mobile-menu nav a:hover,
.mobile-menu nav a.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* ============================================
   内容卡片
   ============================================ */
.content-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.content-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  position: relative;
  aspect-ratio: 2/3;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.content-card:hover .card-image img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background: var(--primary-color);
  color: white;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.card-badge.vip {
  background: linear-gradient(135deg, #ffd700, #ffaa00);
  color: #333;
}

.card-badge.new {
  background: linear-gradient(135deg, #ff4757, #ff3838);
}

.card-rating {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: rgba(0, 0, 0, 0.7);
  color: #ffd700;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.content-card:hover .card-overlay {
  opacity: 1;
}

.play-icon {
  width: 50px;
  height: 50px;
  background: rgba(255, 102, 0, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: all var(--transition-fast);
}

.content-card:hover .play-icon {
  transform: scale(1);
}

.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 16px solid white;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  margin-left: 4px;
}

.card-info {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-meta {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ============================================
   区块标题
   ============================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 24px;
  font-weight: 700;
}

.section-title::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(to bottom, var(--primary-color), var(--primary-dark));
  border-radius: var(--radius-sm);
}

.section-more {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.section-more:hover {
  color: var(--primary-color);
}

.section-more::after {
  content: '›';
  font-size: 18px;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.footer-section ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-section a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: var(--spacing-xs);
}

/* ============================================
   工具类
   ============================================ */
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

/* 网格布局 - 首页固定6列 */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* 首页6列布局 - 固定每行6张图片 */
.grid-6 {
  grid-template-columns: repeat(6, 1fr);
}

/* 平板端：6列变为3列 */
@media (max-width: 1199px) {
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
}

/* 移动端：6列变为2列 */
@media (max-width: 767px) {
  /* 移动端隐藏导航行（走汉堡菜单），避免链接行 nowrap 撑破容器 */
  .nav-menu {
    display: none;
  }
  .grid-6 { grid-template-columns: repeat(2, 1fr); }
  .grid-5,
  .grid-4,
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  
  .grid-2 { grid-template-columns: 1fr; }
}

/* 隐藏元素 */
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 平板/窄窗口下导航横向滚动，避免栏目名被压缩成竖排 */
@media (max-width: 1199px) {
  .nav-menu {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-wrap: nowrap;
  }
  .nav-menu::-webkit-scrollbar {
    display: none;
  }
  .nav-menu a {
    white-space: nowrap;
  }
}