/* 网盘搜索 PWA 安装引导样式
 * 配色与项目主色（琥珀金 #de9f2d）一致
 * 不使用背景模糊，遵守用户偏好；提供明确关闭按钮
 */

#pwa-install-banner {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: 12px;
  z-index: 1080;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: #ffffff;
  border: 1px solid rgba(222, 159, 45, 0.35);
  border-radius: 14px;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.16);
  transform: translateY(140%);
  opacity: 0;
  transition: transform 0.32s ease, opacity 0.32s ease;
  max-width: 520px;
  margin: 0 auto;
}

#pwa-install-banner.show {
  transform: translateY(0);
  opacity: 1;
}

#pwa-install-banner .pwa-banner-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

#pwa-install-banner .pwa-banner-text {
  flex: 1;
  min-width: 0;
}

#pwa-install-banner .pwa-banner-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: #0f172a;
  line-height: 1.3;
}

#pwa-install-banner .pwa-banner-desc {
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.3;
  margin-top: 2px;
}

#pwa-install-banner .pwa-banner-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

#pwa-install-banner .pwa-btn-add {
  background: #de9f2d;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

#pwa-install-banner .pwa-btn-add:hover {
  background: #b7791f;
}

#pwa-install-banner .pwa-btn-close {
  background: transparent;
  border: none;
  color: #94a3b8;
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}

#pwa-install-banner .pwa-btn-close:hover {
  color: #475569;
  background: rgba(148, 163, 184, 0.12);
}

/* iOS 引导弹层 */
#pwa-ios-modal {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1081;
  display: none;
  align-items: flex-end;
  justify-content: center;
  background: rgba(15, 23, 42, 0.42);
  opacity: 0;
  transition: opacity 0.28s ease;
}

#pwa-ios-modal.show {
  display: flex;
  opacity: 1;
}

#pwa-ios-modal .pwa-ios-sheet {
  width: 100%;
  max-width: 480px;
  background: #ffffff;
  border-radius: 18px 18px 0 0;
  padding: 20px 18px 20px; /* 回退：不支持 env() 的浏览器 */
  padding: 20px 18px calc(20px + constant(safe-area-inset-bottom)); /* iOS 11.0-11.2 */
  padding: 20px 18px calc(20px + env(safe-area-inset-bottom)); /* iOS 11.2+ */
  transform: translateY(100%);
  transition: transform 0.32s ease;
}

#pwa-ios-modal.show .pwa-ios-sheet {
  transform: translateY(0);
}

#pwa-ios-modal .pwa-ios-handle {
  width: 36px;
  height: 4px;
  border-radius: 2px;
  background: #cbd5e1;
  margin: 0 auto 16px;
}

#pwa-ios-modal .pwa-ios-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #0f172a;
  text-align: center;
  margin-bottom: 14px;
}

#pwa-ios-modal .pwa-ios-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: #f8fafc;
  border-radius: 10px;
  margin-bottom: 10px;
}

#pwa-ios-modal .pwa-ios-step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #de9f2d;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

#pwa-ios-modal .pwa-ios-step-text {
  font-size: 0.86rem;
  color: #334155;
  line-height: 1.4;
}

#pwa-ios-modal .pwa-ios-share {
  color: #de9f2d;
  font-size: 1.1rem;
}

#pwa-ios-modal .pwa-ios-add {
  color: #0f172a;
  font-size: 1.1rem;
}

#pwa-ios-modal .pwa-ios-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

#pwa-ios-modal .pwa-ios-btn {
  flex: 1;
  border: none;
  border-radius: 10px;
  padding: 11px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

#pwa-ios-modal .pwa-ios-btn-primary {
  background: #de9f2d;
  color: #fff;
}

#pwa-ios-modal .pwa-ios-btn-primary:hover {
  background: #b7791f;
}

#pwa-ios-modal .pwa-ios-btn-ghost {
  background: #f1f5f9;
  color: #475569;
}

#pwa-ios-modal .pwa-ios-btn-ghost:hover {
  background: #e2e8f0;
}

/* 书签引导弹层：键盘快捷键徽章 */
#pwa-ios-modal .pwa-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: 3px 8px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #f9fafb;
  font-family: "SF Mono", "Consolas", "Monaco", monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: #374151;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
  line-height: 1.4;
}

/* 书签引导弹层：底部提示条 */
#pwa-ios-modal .pwa-bookmark-tip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  margin-top: 4px;
  background: rgba(222, 159, 45, 0.08);
  border: 1px dashed rgba(222, 159, 45, 0.3);
  border-radius: 10px;
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.4;
}

/* gap 属性回退：不支持 flex gap 的旧版浏览器使用 margin 替代 */
@supports not (gap: 1px) {
  #pwa-install-banner .pwa-banner-icon {
    margin-right: 12px;
  }
  #pwa-install-banner .pwa-banner-actions {
    margin-left: 8px;
  }
  #pwa-install-banner .pwa-btn-close {
    margin-left: 8px;
  }
  #pwa-ios-modal .pwa-ios-step-num {
    margin-right: 12px;
  }
  #pwa-ios-modal .pwa-ios-btn-ghost {
    margin-right: 10px;
  }
  #pwa-ios-modal .pwa-bookmark-tip .pwa-kbd {
    margin-left: 4px;
    margin-right: 4px;
  }
}

@media (max-width: 380px) {
  #pwa-install-banner {
    padding: 10px 12px;
    gap: 10px;
  }
  #pwa-install-banner .pwa-banner-icon {
    width: 38px;
    height: 38px;
  }
  #pwa-install-banner .pwa-banner-desc {
    display: none;
  }
}