/* 认证页面样式 */
.auth-main {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-container {
  background: white;
  border-radius: 12px;
  padding: 3rem;
  max-width: 500px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: #333;
}

.auth-header p {
  color: #666;
  font-size: 0.95rem;
}

.auth-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid #eee;
}

.tab-btn {
  flex: 1;
  padding: 1rem;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: #666;
  transition: all 0.3s;
}

.tab-btn.active {
  color: #667eea;
  border-bottom-color: #667eea;
}

.tab-btn:hover {
  color: #667eea;
}

.auth-form {
  display: block;
}

.auth-form.hidden {
  display: none;
}

.auth-form h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: #333;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #333;
  font-size: 0.9rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e1e8ed;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
}

.btn-primary {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.message {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 6px;
  font-size: 0.9rem;
  text-align: center;
}

.message.error {
  background-color: #fee;
  color: #c33;
  border: 1px solid #fcc;
}

.message.success {
  background-color: #efe;
  color: #3c3;
  border: 1px solid #cfc;
}

.hidden {
  display: none !important;
}

/* 响应式 */
@media (max-width: 768px) {
  .auth-container {
    padding: 2rem;
  }

  .auth-header h1 {
    font-size: 1.5rem;
  }
}