/* ============================================
   魅影视频 - 全局样式表
   品牌色：玫瑰粉 #FF6B9D、珊瑚橙 #FF8C42、金色 #FFB84D
   ============================================ */

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

:root {
  --primary-pink: #FF6B9D;
  --primary-orange: #FF8C42;
  --primary-gold: #FFB84D;
  --dark-bg: #0F1419;
  --light-bg: #FFFFFF;
  --text-dark: #1A1A1A;
  --text-light: #666666;
  --border-color: #E8E8E8;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--light-bg);
  overflow-x: hidden;
}

/* ============ 排版系统 ============ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5em;
  color: var(--text-dark);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.3px;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1em;
  color: var(--text-light);
  font-size: 1rem;
}

a {
  color: var(--primary-pink);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

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

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.col-md-6 {
  flex: 1 1 calc(50% - 10px);
  min-width: 300px;
}

.col-md-4 {
  flex: 1 1 calc(33.333% - 14px);
  min-width: 250px;
}

.col-md-3 {
  flex: 1 1 calc(25% - 15px);
  min-width: 200px;
}

/* ============ 按钮样式 ============ */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-pink), var(--primary-orange));
  color: white;
  box-shadow: var(--shadow);
}

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

.btn-secondary {
  background-color: var(--light-bg);
  color: var(--primary-pink);
  border: 2px solid var(--primary-pink);
}

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

.btn-block {
  display: block;
  width: 100%;
}

/* ============ 卡片组件 ============ */
.card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  margin-bottom: 15px;
  object-fit: cover;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.card-text {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 15px;
}

/* ============ 视频卡片 ============ */
.video-card {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  group: video-card;
}

.video-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.video-card-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  background: rgba(255, 107, 157, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.video-card:hover .video-card-play {
  opacity: 1;
}

.video-card-play::after {
  content: '▶';
  color: white;
  font-size: 20px;
  margin-left: 3px;
}

.video-card-info {
  padding: 12px;
  background: white;
}

.video-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 5px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card-meta {
  font-size: 0.85rem;
  color: var(--text-light);
}

.video-stats {
  display: flex;
  gap: 15px;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 8px;
}

/* ============ 输入框 ============ */
.input-group {
  display: flex;
  align-items: center;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.input-group input {
  flex: 1;
  border: none;
  padding: 12px 16px;
  font-size: 1rem;
  outline: none;
}

.input-group button {
  background: linear-gradient(135deg, var(--primary-pink), var(--primary-orange));
  color: white;
  border: none;
  padding: 12px 20px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s ease;
}

.input-group button:hover {
  opacity: 0.9;
}

/* ============ 标签 ============ */
.tag {
  display: inline-block;
  padding: 6px 12px;
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.1), rgba(255, 140, 66, 0.1));
  color: var(--primary-pink);
  border-radius: 20px;
  font-size: 0.85rem;
  margin-right: 8px;
  margin-bottom: 8px;
}

/* ============ 网格布局 ============ */
.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ============ 分隔符 ============ */
.divider {
  height: 1px;
  background: var(--border-color);
  margin: 30px 0;
}

/* ============ 加载与动画 ============ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ============ 响应式设计 ============ */
@media (max-width: 768px) {
  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  .col-md-6,
  .col-md-4,
  .col-md-3 {
    flex: 1 1 100%;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 15px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .btn {
    padding: 10px 20px;
    font-size: 0.95rem;
  }

  .input-group {
    flex-direction: column;
  }

  .input-group input,
  .input-group button {
    width: 100%;
  }
}