/* 茄子视频 修车改装视频社区 - 原创样式表 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #1a5c9e;
  --accent-color: #ff6b35;
  --dark-bg: #0f1419;
  --light-bg: #f8f9fa;
  --text-dark: #1a1a1a;
  --text-light: #f0f0f0;
  --border-color: #e0e0e0;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--light-bg);
}

/* 头部导航 */
header {
  background: linear-gradient(135deg, var(--primary-color) 0%, #0d3a6b 100%);
  color: white;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.8rem;
  font-weight: 700;
  text-decoration: none;
  color: white;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo img {
  height: 45px;
  width: auto;
}

.logo-text {
  font-size: 1.6rem;
  letter-spacing: 2px;
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  color: white;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease, border-bottom 0.3s ease;
  padding-bottom: 0.3rem;
  border-bottom: 2px solid transparent;
}

nav a:hover {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* 搜索框 */
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 25px;
  padding: 0.5rem 1rem;
  gap: 0.5rem;
  transition: background 0.3s ease;
}

.search-box:hover,
.search-box:focus-within {
  background: rgba(255, 255, 255, 0.25);
}

.search-box input {
  background: none;
  border: none;
  color: white;
  font-size: 0.9rem;
  width: 150px;
  outline: none;
}

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

.search-icon {
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-size: 1.1rem;
}

/* Hero Banner */
.hero-section {
  background: linear-gradient(rgba(26, 92, 158, 0.7), rgba(15, 20, 25, 0.7)),
              url('https://d2xsxph8kpxj0f.cloudfront.net/310519663735363549/HcmvovdqiLn9vPcwd8nEFE/hero-car-workshop-V6JasQaK5VL3JWKWBzA3HR.webp') center/cover;
  color: white;
  padding: 8rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.1), transparent);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
  letter-spacing: 1px;
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  font-weight: 300;
  text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
  line-height: 1.8;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
  text-align: center;
}

.section-subtitle {
  font-size: 1rem;
  color: #666;
  text-align: center;
  margin-bottom: 3rem;
}

/* 视频网格 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.video-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  position: relative;
}

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

.video-thumbnail {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  overflow: hidden;
}

.video-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(255, 107, 53, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 10;
}

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

.video-info {
  padding: 1.5rem;
}

.video-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  line-height: 1.4;
}

.video-meta {
  font-size: 0.85rem;
  color: #999;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.video-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
  color: #666;
}

.video-stats span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

/* 按钮 */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-color) 0%, #ff5722 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 107, 53, 0.4);
}

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

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

/* FAQ 部分 */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-left: 4px solid var(--accent-color);
  padding: 1.5rem;
  margin-bottom: 1rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow-lg);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-dark);
  font-size: 1.05rem;
}

.faq-icon {
  font-size: 1.5rem;
  color: var(--accent-color);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  margin-top: 1rem;
  color: #666;
  line-height: 1.7;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 用户评论 */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.review-card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.review-card:hover {
  transform: translateY(-4px);
}

.review-rating {
  color: #ffc107;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.review-text {
  color: #666;
  margin-bottom: 1.5rem;
  line-height: 1.7;
  font-style: italic;
}

.review-author {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.95rem;
}

/* 页脚 */
footer {
  background: var(--dark-bg);
  color: var(--text-light);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
  font-size: 1.1rem;
}

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

.footer-section ul li {
  margin-bottom: 0.8rem;
}

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

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

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.footer-logo img {
  height: 40px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  font-size: 0.95rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 2rem;
  text-align: center;
  color: #888;
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 107, 53, 0.2);
  border-radius: 50%;
  color: var(--accent-color);
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 1.2rem;
}

.social-links a:hover {
  background: var(--accent-color);
  color: white;
  transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
  .header-content {
    padding: 0 1rem;
  }

  nav {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .search-box {
    display: none;
  }

  .hero-content h1 {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .hero-section {
    padding: 4rem 1rem;
  }

  .hero-content h1 {
    font-size: 1.8rem;
  }

  .container {
    padding: 0 1rem;
  }

  .section {
    padding: 2rem 0;
  }

  .btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.9rem;
  }
}

/* 淡入动画 */
.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 加载动画 */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 107, 53, 0.3);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}