/* 青柠视频 - 原创品牌网站 CSS */
/* 设计理念：现代极简 + 渐变活力 + 视频中心 */

:root {
  --primary-color: #ff1493;
  --secondary-color: #9d4edd;
  --accent-color: #00d4ff;
  --dark-bg: #0a0e27;
  --light-bg: #f8f9fa;
  --text-dark: #1a1a2e;
  --text-light: #ffffff;
  --border-color: #e0e0e0;
  --success-color: #00d084;
  --warning-color: #ffa500;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background: linear-gradient(135deg, #f8f9fa 0%, #f0f0f5 100%);
  overflow-x: hidden;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-fluid {
  width: 100%;
  padding: 0 20px;
}

/* 响应式网格 */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: -10px;
}

.col {
  flex: 1;
  padding: 10px;
  min-width: 250px;
}

.col-1 { flex: 0 0 calc(8.333% - 20px); }
.col-2 { flex: 0 0 calc(16.666% - 20px); }
.col-3 { flex: 0 0 calc(25% - 20px); }
.col-4 { flex: 0 0 calc(33.333% - 20px); }
.col-5 { flex: 0 0 calc(41.666% - 20px); }
.col-6 { flex: 0 0 calc(50% - 20px); }
.col-12 { flex: 0 0 calc(100% - 20px); }

/* 头部导航 */
header {
  background: linear-gradient(90deg, rgba(255, 20, 147, 0.95) 0%, rgba(157, 78, 221, 0.95) 100%);
  color: white;
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: bold;
  text-decoration: none;
  color: white;
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

nav a:hover {
  color: var(--accent-color);
  transform: translateY(-2px);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 100%;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 25px;
  padding: 8px 15px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.search-box input {
  background: transparent;
  border: none;
  color: white;
  width: 200px;
  outline: none;
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.search-box button {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 18px;
}

/* 主要内容区域 */
main {
  min-height: calc(100vh - 200px);
  padding: 40px 0;
}

/* 英雄区域 */
.hero {
  background: linear-gradient(135deg, #ff1493 0%, #9d4edd 50%, #00d4ff 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
  border-radius: 20px;
  margin-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 20px;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: 0.95;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background: #ff0080;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(255, 20, 147, 0.4);
}

.btn-secondary {
  background: white;
  color: var(--primary-color);
}

.btn-secondary:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-3px);
}

/* 卡片组件 */
.card {
  background: white;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background: linear-gradient(135deg, #f0f0f5 0%, #e0e0e5 100%);
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.card-text {
  color: #666;
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 15px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #999;
}

.card-stats {
  display: flex;
  gap: 15px;
}

.stat {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* 视频播放器容器 */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 15px;
  background: #000;
}

.video-container iframe,
.video-container video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* 标签 */
.tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-right: 8px;
  margin-bottom: 8px;
}

/* 部分标题 */
.section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
  color: var(--text-dark);
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  border-radius: 2px;
}

/* 页脚 */
footer {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: white;
  padding: 50px 20px 20px;
  margin-top: 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-section h3 {
  font-size: 18px;
  margin-bottom: 15px;
  color: var(--accent-color);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 10px;
}

.footer-section a {
  color: #bbb;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  text-align: center;
  color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
  nav ul {
    gap: 15px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

  .search-box input {
    width: 120px;
  }

  .col-3 {
    flex: 0 0 calc(50% - 20px);
  }

  .col-4 {
    flex: 0 0 calc(100% - 20px);
  }

  .section-title {
    font-size: 28px;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .header-container {
    flex-direction: column;
    gap: 15px;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }

  .hero {
    padding: 40px 20px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .col-3 {
    flex: 0 0 calc(100% - 20px);
  }

  .card-image {
    height: 200px;
  }
}

/* 加载动画 */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 20, 147, 0.3);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 渐变文本 */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--accent-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 工具类 */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }
.p-20 { padding: 20px; }
.p-40 { padding: 40px; }
.zjLo8FpM { display: none; }
.visible { display: block; }