/* 教程页面布局 */
.tutorial-container {
  display: flex;
  padding-top: 80px;
  min-height: calc(100vh - 80px);
  align-items: flex-start;
  gap: 30px;
}

.tutorial-content video {
  max-width: 100%;
  background-color: black;
}

/* 左侧导航菜单 */
.tutorial-nav {
  width: 300px;
  background: white;
  padding: 25px 0;
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 80px;
  left: 0;
  height: calc(100vh - 80px);
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  border-radius: var(--border-radius);
  margin: 20px;
}

.tutorial-nav h2 {
  color: var(--dark-color);
  margin-bottom: 25px;
  padding: 0 25px 15px;
  border-bottom: 2px solid var(--primary-color);
  font-size: 1.5rem;
}

.nav-menu {
  list-style: none;
}

.nav-menu li {
  margin-bottom: 5px;
  cursor: pointer;
  user-select: none;
}

.nav-menu a {
  color: var(--dark-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  padding: 10px 25px;
  transition: var(--transition);
  border-radius: 8px;
  margin: 0 10px;
}

.nav-menu a:hover {
  background-color: var(--light-color);
  color: var(--primary-color);
}

.nav-menu .folder > a {
  color: var(--dark-color);
  font-weight: 500;
}

.nav-menu .folder > a::before {
  content: "\f07b";
  font-family: "Font Awesome 5 Free";
  margin-right: 12px;
  font-size: 14px;
  transition: transform 0.3s;
  color: var(--primary-color);
}

.nav-menu .folder.open > a::before {
  transform: rotate(90deg);
}

.nav-menu .file > a::before {
  /*    content: "\f15b";
    font-family: "Font Awesome 5 Free";
    margin-right: 12px;
    font-size: 14px;
    color: var(--secondary-color);*/
}

.nav-menu .sub-menu {
  list-style: none;
  margin-left: 25px;
  display: none;
}

.nav-menu .folder.open .sub-menu {
  display: block;
}

.nav-menu .sub-menu a {
  font-size: 0.95em;
  padding: 8px 25px 8px 45px;
}

.nav-menu .active {
  background-color: var(--primary-color);
  color: white;
}

.nav-menu .active::before {
  color: white !important;
}

/* 右侧内容区域 */
.tutorial-content {
  flex: 1;
  margin: 20px;
  max-width: 100%;
  padding: 40px;
  background: white;
  border-radius: var(--border-radius);
  overflow-x: hidden; /* 防止横向溢出 */
  box-shadow: var(--box-shadow);
  min-height: calc(100vh - 80px);
}

.tutorial-content h1 {
  color: var(--dark-color);
  margin-bottom: 35px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--primary-color);
  font-size: 2.2rem;
}

.tutorial-content h2 {
  color: var(--dark-color);
  margin: 45px 0 25px;
  font-size: 1.8rem;
}

.tutorial-content h3 {
  color: var(--dark-color);
  margin: 35px 0 20px;
  font-size: 1.4rem;
}

.tutorial-content p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: #4a5568;
}

.tutorial-content code {
  background-color: var(--light-color);
  padding: 3px 6px;
  border-radius: 4px;
  font-family: "Fira Code", monospace;
  font-size: 0.9em;
  color: var(--primary-color);
}

.tutorial-content pre {
  background-color: var(--light-color);
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.tutorial-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 20px 0;
  box-shadow: var(--box-shadow);
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .container {
    padding: 0 15px;
  }

  /* 导航栏移动端适配 */
  header {
    padding: 0 15px;
  }

  nav {
    padding: 15px 0;
  }

  .logo {
    font-size: 20px;
  }

  /* 教程页面布局移动端适配 */
  .tutorial-container {
    flex-direction: column;
    padding-top: 70px;
    gap: 0;
  }

  .tutorial-nav {
    width: 100%;
    margin: 0;
    position: relative;
    top: 0;
    height: auto;
    max-height: none;
    border-radius: 0;
    box-shadow: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  }

  .tutorial-nav h2 {
    padding: 15px;
    margin-bottom: 0;
    font-size: 1.2rem;
  }

  .nav-menu {
    padding: 10px 0;
  }

  .nav-menu a {
    padding: 12px 15px;
    margin: 0;
  }

  .nav-menu .sub-menu {
    margin-left: 15px;
  }

  .nav-menu .sub-menu a {
    padding: 10px 15px 10px 35px;
  }

  .tutorial-content {
    margin: 0;
    padding: 20px 15px;
    border-radius: 0;
    box-shadow: none;
  }

  .tutorial-content h1 {
    font-size: 1.8rem;
    margin-bottom: 25px;
    padding-bottom: 15px;
  }

  .tutorial-content h2 {
    font-size: 1.5rem;
    margin: 35px 0 20px;
  }

  .tutorial-content h3 {
    font-size: 1.2rem;
    margin: 30px 0 15px;
  }

  .tutorial-content pre {
    padding: 15px;
    max-width: 100%;
    border-radius: 0;
  }

  /* 页脚移动端适配 */
  footer {
    padding: 40px 0 20px;
    margin-top: 40px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 30px;
    text-align: center;
  }

  .footer-column h3::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-links a:hover {
    padding-left: 0;
  }
}

/* 添加触摸设备的优化 */
@media (hover: none) {
  .nav-menu a:hover {
    transform: none;
  }

  .btn:hover {
    transform: none;
  }
}