* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft Yahei", sans-serif;
}

/* body：暗色渐变背景 */
body {
  background: linear-gradient(to right, #1a1a1a, #2f2f2f);
  min-height: 100vh;
  color: #fff;
}

/* 让内容居中对齐(用于登录/注册/重置页面) */
.centered-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

/* 可用于主控制台页面，让它在中间区域可滚动 */
.main-container {
  flex: 1; /* 如果body用display:flex，可以让它撑开 */
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem;
  overflow-y: auto;
}

/* 霓虹卡片容器 */
.neon-card {
  position: relative;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(6px);
  width: 320px;       /* 默认宽度 */
  max-width: 90%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.neon-card::before {
  content: "";
  position: absolute;
  top: -2px; 
  left: -2px; 
  right: -2px; 
  bottom: -2px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0066ff, #00c8ff);
  opacity: 0.6;
  z-index: -1;
}

/* 标题(登录/注册/控制台等卡片标题通用) */
.title {
  text-align: center;
  font-size: 1.5rem;
  letter-spacing: 1px;
  margin-bottom: 1rem;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

/* 表单组 */
.form-group {
  display: flex;
  flex-direction: column;
}
.form-group label {
  margin-bottom: 0.3rem;
  font-size: 0.95rem;
  opacity: 0.9;
}
.form-group input {
  padding: 0.6rem;
  border: none;
  border-radius: 5px;
  outline: none;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 0.95rem;
}
.form-group input::placeholder {
  color: #ddd;
}

/* 通用按钮 */
.btn {
  padding: 0.6rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.95rem;
  color: #fff;
  transition: background 0.3s, box-shadow 0.3s;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  width: 100%;
  margin-top: 0.5rem;
}
.btn:hover {
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

/* 不同颜色按钮 */
.btn-green {
  background-color: #2ecc71;
}
.btn-green:hover {
  background-color: #27ae60;
}
.btn-blue {
  background-color: #3498db;
}
.btn-blue:hover {
  background-color: #2980b9;
}
.btn-red {
  background-color: #ff6565;
}
.btn-red:hover {
  background-color: #fa4b4b;
}
/* 额外加一个灰色按钮 */
.btn-gray {
  background-color: #888;
}
.btn-gray:hover {
  background-color: #666;
}

/* 提示信息与错误信息 */
.myerror {
  color: #fbc2c4;
  font-size: 0.9rem;
  min-height: 1.2rem;
}
.submitinfo {
  color: #c2f4fb;
  font-size: 0.9rem;
  min-height: 1.2rem;
}

/* 页脚（登录/注册/控制台可统一使用） */
.footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: #ccc;
}

/* 页头(若需要，也可只在控制台页面用) */
.header {
  text-align: center;
  padding: 1rem 0;
}

/* 分割线 */
.hr-line {
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  margin: 1rem 0;
}

/* 隐藏元素的辅助类 */
.hidden {
  display: none !important;
}

/* 适配小屏幕 */
@media (max-width: 420px) {
  body {
    font-size: 0.95rem;
  }
  .neon-card {
    padding: 1.5rem;
    width: 90%;
  }
  .form-group input {
    font-size: 0.9rem;
  }
  .title {
    font-size: 1.2rem;
  }
}
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid #fff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  100% { transform: rotate(360deg); }
}

.btn[disabled]{
  opacity:.55;
  cursor:not-allowed;
  pointer-events:none;
}