/* ============================================================
   首次访问引导（Onboarding）
   - 全屏遮罩 .onboarding-overlay
   - 居中引导卡片 .onboarding-card
   - 步骤指示器 .onboarding-dots
   ============================================================ */

.onboarding-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 30, 50, 0.72);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: onboardingFadeIn 0.3s ease;
}

@keyframes onboardingFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes onboardingSlideUp {
  from { opacity: 0; transform: translateY(24px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.onboarding-card {
  position: relative;
  width: 100%;
  max-width: 480px;
  background: #ffffff;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
  overflow: hidden;
  animation: onboardingSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 关闭/跳过按钮 */
.onboarding-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.04);
  color: #888;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 2;
}

.onboarding-close:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #444;
}

/* 图标区 */
.onboarding-icon-wrap {
  padding: 36px 36px 8px;
  text-align: center;
}

.onboarding-icon {
  font-size: 64px;
  line-height: 1;
  display: inline-block;
  animation: onboardingPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes onboardingPop {
  0% { transform: scale(0); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* 内容区 */
.onboarding-body {
  padding: 8px 36px 28px;
  text-align: center;
}

.onboarding-step-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #4A90E2;
  background: #eef5ff;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.onboarding-title {
  font-size: 22px;
  font-weight: 700;
  color: #1a2a44;
  margin: 0 0 12px;
}

.onboarding-desc {
  font-size: 14.5px;
  line-height: 1.7;
  color: #555;
  margin: 0;
}

.onboarding-desc strong {
  color: #4A90E2;
}

/* 步骤指示器 */
.onboarding-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 0 36px 20px;
}

.onboarding-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #dde3ec;
  cursor: pointer;
  transition: all 0.25s ease;
  border: none;
  padding: 0;
}

.onboarding-dot:hover {
  background: #b8c4d6;
}

.onboarding-dot.active {
  width: 24px;
  border-radius: 4px;
  background: linear-gradient(135deg, #4A90E2, #357ABD);
}

/* 按钮区 */
.onboarding-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 36px 32px;
  gap: 12px;
}

.onboarding-btn {
  padding: 11px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
  min-width: 96px;
}

.onboarding-btn-secondary {
  background: #f1f5f9;
  color: #666;
  border: 1.5px solid #e2e8f0;
}

.onboarding-btn-secondary:hover {
  background: #e8eef5;
  color: #4A90E2;
}

.onboarding-btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.onboarding-btn-primary {
  background: linear-gradient(135deg, #4A90E2, #357ABD);
  color: white;
  box-shadow: 0 4px 12px rgba(74, 144, 226, 0.35);
  flex: 1;
}

.onboarding-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(74, 144, 226, 0.45);
}

/* 响应式 */
@media (max-width: 520px) {
  .onboarding-card {
    max-width: 100%;
  }
  .onboarding-icon-wrap,
  .onboarding-body,
  .onboarding-dots,
  .onboarding-actions {
    padding-left: 24px;
    padding-right: 24px;
  }
  .onboarding-icon {
    font-size: 52px;
  }
  .onboarding-title {
    font-size: 19px;
  }
  .onboarding-btn {
    min-width: 80px;
    padding: 10px 18px;
  }
}