/* 通用背景与布局 */
body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(to bottom right, #ffe6f0, #ffd6ec);
  color: #333;
  text-align: center;
}

/* 登录页面样式 */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.login-container {
  background: white;
  padding: 2rem;
  border-radius: 20px;
  box-shadow: 0 0 20px rgba(255, 192, 203, 0.5);
}

.login-icon {
  width: 80px;
  margin-bottom: 1rem;
}

.login-container input,
.login-container select,
.login-container button {
  display: block;
  margin: 1rem auto;
  padding: 0.8rem 1.2rem;
  font-size: 1rem;
  border-radius: 30px;
  border: 1px solid #ccc;
}

/* 视频页面布局 */
.video-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

video {
  width: 45%;
  border-radius: 20px;
  box-shadow: 0 0 20px rgba(255, 182, 193, 0.8);
}

/* 控制按钮区域 */
.controls {
  margin-top: 1.5rem;
}

.round-btn {
  background-color: #ff99cc;
  color: white;
  border: none;
  padding: 1rem;
  margin: 0.5rem;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
}

.round-btn:hover {
  background-color: #ff66b2;
  transform: scale(1.1);
}

.round-btn.red {
  background-color: #ff4d4d;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: #ffcce6;
  border-bottom: 2px solid #ff99cc;
}