@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

@keyframes rainbow {
  0% { color: #ff0000; }
  20% { color: #ff8800; }
  40% { color: #ffff00; }
  60% { color: #00ff00; }
  80% { color: #0000ff; }
  100% { color: #ff0000; }
}

body {
  background-color: #d3f9d8; /* 浅绿色背景 */
  margin: 0;
  font-family: Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.nav-bar {
  background-color: white;
  height: 50px; /* 固定导航栏高度 */
  padding: 0 20px; /* 移除上下内边距，只保留左右内边距 */
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: fixed;
  top: 0;
  width: 100%;
  box-sizing: border-box;
  z-index: 1000;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 100%; /* 让左侧区域填满导航栏高度 */
}

.nav-icon {
  height: 35px; /* 设置图标高度，稍小于导航栏高度 */
  width: auto; /* 保持图标比例 */
  object-fit: contain;
  padding: 5px 0; /* 添加一点上下内边距 */
}

.nav-title {
  font-size: 1.2em;
  font-weight: bold;
  color: #333;
}

.login-button {
  padding: 8px 20px;
  font-size: 1em;
  cursor: pointer;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 5px;
}

.login-button:hover {
  background-color: #45a049;
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.content {
  margin-top: 60px; /* 为导航栏留出空间 */
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 40px 0;
  animation: float 3s ease-in-out infinite;
}

.rainbow-text {
  margin: 0;
  font-size: 3.5em;
  text-align: center;
  font-weight: bold;
  letter-spacing: -0.05em;
}

.rainbow-text span {
  display: inline-block;
  animation: rainbow 6s linear infinite;
}

.rainbow-text span:nth-child(1) { animation-delay: -0.5s; }
.rainbow-text span:nth-child(2) { animation-delay: -1.0s; }
.rainbow-text span:nth-child(3) { animation-delay: -1.5s; }
.rainbow-text span:nth-child(4) { animation-delay: -2.0s; }
.rainbow-text span:nth-child(5) { animation-delay: -2.5s; }
.rainbow-text span:nth-child(6) { animation-delay: -3.0s; }
.rainbow-text span:nth-child(8) { animation-delay: -3.5s; }
.rainbow-text span:nth-child(9) { animation-delay: -4.0s; }
.rainbow-text span:nth-child(10) { animation-delay: -4.5s; }
.rainbow-text span:nth-child(11) { animation-delay: -5.0s; }
.rainbow-text span:nth-child(12) { animation-delay: -5.5s; }

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 800px;
}

.enter-button {
  padding: 15px 30px;
  font-size: 1.5em;
  margin: 20px 0;
  cursor: pointer;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 10px;
}

.enter-button:hover {
  background-color: #45a049;
  transform: scale(1.05);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.thanks-box {
  background-color: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  width: 80%;
  max-width: 600px;
  text-align: center;
  margin: 20px 0;
  transition: transform 0.3s;
}

.thanks-box:hover {
  transform: translateY(-5px);
}

.thanks-box h2 {
  color: #333;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.iconfont {
  font-size: 1.2em;
}

.icon-heart {
  color: #ff4444;
  animation: float 1.5s ease-in-out infinite;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 2000;
}

.modal-content {
  position: relative;
  background-color: #fff;
  margin: 15vh auto;
  padding: 20px;
  width: 90%;
  max-width: 400px;
  border-radius: 15px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
  z-index: 2001;  /* 确保内容在遮罩层之上 */
}

.close {
  position: absolute;
  right: 20px;
  top: 10px;
  font-size: 28px;
  cursor: pointer;
  color: #666;
}

.auth-container {
  padding: 20px 0;
}

.auth-header {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 30px;
}

.auth-tab {
  padding: 10px 20px;
  border: none;
  background: none;
  font-size: 1.1em;
  cursor: pointer;
  color: #666;
  border-bottom: 2px solid transparent;
}

.auth-tab.active {
  color: #4CAF50;
  border-bottom-color: #4CAF50;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  position: relative;
  z-index: 2002;
}

.form-group label {
  color: #666;
  font-size: 0.9em;
}

.form-group input {
  position: relative;
  z-index: 2002;  /* 确保输入框在最上层 */
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1em;
  width: 100%;
  box-sizing: border-box;
  background-color: white;
}

.avatar-upload {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.avatar-preview {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: #f5f5f5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
}

.avatar-preview:hover {
  background-color: #e0e0e0;
}

.avatar-preview i {
  font-size: 2em;
  color: #666;
  margin-bottom: 5px;
}

.avatar-preview span {
  font-size: 0.8em;
  color: #666;
}

.submit-btn {
  padding: 12px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1em;
  transition: all 0.3s;
}

.submit-btn:hover {
  background-color: #45a049;
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* 自定义图标样式 */
.icon-user::before,
.icon-add::before,
.icon-enter::before,
.icon-heart::before {
  display: inline-block;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
}

.icon-user::before {
  content: "👤";
}

.icon-add::before {
  content: "+";
  font-size: 2em;
  font-weight: bold;
}

.icon-enter::before {
  content: "➜";
}

.icon-heart::before {
  content: "❤️";
}

/* 调整图标样式 */
.icon-user,
.icon-add,
.icon-enter,
.icon-heart {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 5px;
}

.avatar-preview .icon-add {
  font-size: 2em;
  color: #666;
  margin-bottom: 5px;
}

.enter-button .icon-enter {
  font-size: 1.2em;
}

.thanks-box .icon-heart {
  color: #ff4444;
  animation: float 1.5s ease-in-out infinite;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 5px;
  transition: all 0.3s;
}

.user-info:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.user-name {
  color: #333;
  font-size: 1em;
}

.user-container {
  position: relative;
}

.user-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 5px;
  background-color: white;
  border-radius: 5px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  padding: 5px;
  min-width: 120px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.menu-btn {
  width: 100%;
  padding: 8px 15px;
  border: none;
  background: none;
  color: #333;
  text-align: left;
  cursor: pointer;
  font-size: 0.9em;
  border-radius: 3px;
  transition: all 0.3s;
}

.menu-btn:hover {
  background-color: #f5f5f5;
}

.profile-btn:hover {
  color: #4CAF50;
}

.logout-btn:hover {
  color: #ff4444;
}

/* 确保输入框在模态窗口中正常工作 */
.modal input {
  position: relative;
  z-index: 3;
}

/* 防止文本选择问题 */
input, textarea {
  -webkit-user-select: text !important;
  user-select: text !important;
  -webkit-app-region: no-drag;
}