* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

.page {
  min-height: 100vh;
}

/* 登录容器 */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container > * {
  background: white;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 400px;
}

.login-container h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #333;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 14px;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 倒计时样式 */
.countdown-timer {
  display: inline-block;
  width: 120px; /* 固定宽度，防止抖动 */
  text-align: center;
  font-family: 'Courier New', monospace; /* 使用等宽字体 */
  font-weight: bold;
  white-space: nowrap; /* 防止换行 */
  overflow: hidden; /* 隐藏溢出内容 */
  text-overflow: ellipsis; /* 溢出时显示省略号 */
}

/* 按钮 */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-weight: 500;
}

.btn-primary {
  background-color: #667eea;
  color: white;
  width: 100%;
  margin-top: 10px;
}

.btn-primary:hover {
  background-color: #5568d3;
}

.btn-secondary {
  background-color: #6c757d;
  color: white;
}

.btn-secondary:hover {
  background-color: #5a6268;
}

.btn-small {
  padding: 5px 10px;
  font-size: 12px;
  margin: 0 2px;
}

.btn-danger {
  background-color: #dc3545;
  color: white;
}

.btn-danger:hover {
  background-color: #c82333;
}

/* 表格 */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 5px;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.data-table thead {
  background-color: #f8f9fa;
  border-bottom: 2px solid #dee2e6;
}

.data-table th,
.data-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #dee2e6;
}

/* 剩余天数列样式 */
.data-table th:nth-child(5),
.data-table td:nth-child(5) {
  width: 140px; /* 固定剩余天数列宽度 */
  text-align: center;
}

.data-table tbody tr:hover {
  background-color: #f8f9fa;
}

/* 状态标签 */
.status {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 500;
}

.status-待验证 {
  background-color: #ffc107;
  color: #333;
}

.status-已激活 {
  background-color: #28a745;
  color: white;
}

.status-已过期 {
  background-color: #dc3545;
  color: white;
}

.status-未使用 {
  background-color: #17a2b8;
  color: white;
}

.status-已使用 {
  background-color: #6c757d;
  color: white;
}

/* 模态框 */
.modal {
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
}

.close:hover {
  color: #000;
}

/* 消息提示 */
.message {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 15px 20px;
  border-radius: 5px;
  color: white;
  z-index: 2000;
  animation: slideIn 0.3s ease;
}

.message-success {
  background-color: #28a745;
}

.message-error {
  background-color: #dc3545;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* 加载器 */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 3000;
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667eea;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .login-container > * {
    padding: 20px;
  }

  .data-table th,
  .data-table td {
    padding: 8px;
    font-size: 12px;
  }

  .btn-small {
    padding: 3px 6px;
    font-size: 11px;
  }
}