/* ========================================
   App下载引导组件 - PromoWidget
   使用 all:initial + 命名空间实现样式隔离
   ======================================== */

/* 根容器：重置所有继承样式 */
.promo-widget {
  all: initial;
  display: block;
  position: fixed;
  right: 24px;
  bottom: 20%;
  z-index: 2147483647;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: #1E293B;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-sizing: border-box;
}

.promo-widget *,
.promo-widget *::before,
.promo-widget *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  vertical-align: baseline;
}

/* CSS 变量 */
.promo-widget {
  --pw-primary: #4F6AF6;
  --pw-primary-dark: #3D56D4;
  --pw-secondary: #6C8AFF;
  --pw-accent: #FF6B6B;
  --pw-bg: #ffffff;
  --pw-bg-secondary: #F8FAFC;
  --pw-text: #1E293B;
  --pw-text-secondary: #64748B;
  --pw-border: #E2E8F0;
  --pw-shadow-sm: 0 2px 8px rgba(79, 106, 246, 0.12);
  --pw-shadow-md: 0 8px 24px rgba(79, 106, 246, 0.18);
  --pw-shadow-lg: 0 16px 48px rgba(79, 106, 246, 0.22);
  --pw-radius-sm: 8px;
  --pw-radius-md: 12px;
  --pw-radius-lg: 16px;
}

/* ========== 触发按钮 ========== */
.promo-widget__trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 25px;
  background: linear-gradient(135deg, var(--pw-primary), var(--pw-primary-dark));
  box-shadow: var(--pw-shadow-md);
  cursor: pointer;
  position: relative;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  animation: promo-entrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  -webkit-tap-highlight-color: transparent;
  border: none;
  outline: none;
}

.promo-widget__trigger::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 27px;
  background: linear-gradient(135deg, var(--pw-primary), var(--pw-secondary));
  z-index: -1;
  opacity: 0.3;
  filter: blur(8px);
  transition: opacity 0.3s;
}

.promo-widget__trigger:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--pw-shadow-lg);
}

.promo-widget__trigger:hover::after {
  opacity: 0.5;
}

.promo-widget__trigger:active {
  transform: translateY(0) scale(0.98);
}

.promo-widget__trigger-icon {
  display: block;
  width: 18px;
  height: 18px;
  stroke: #fff;
  fill: none;
  flex-shrink: 0;
}

.promo-widget__trigger-text {
  display: block;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  letter-spacing: 0.3px;
  line-height: 1;
}

/* 浮动动画 */
.promo-widget:not(.is-expanded) .promo-widget__trigger {
  animation: promo-entrance 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
             promo-float 3s ease-in-out infinite 1s;
}

/* ========== 角标 ========== */
.promo-widget__badge {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--pw-accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 7px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(255, 107, 107, 0.4);
  animation: promo-badge-bounce 2s ease-in-out infinite;
  line-height: 1;
}


/* ========== 展开面板 ========== */
.promo-widget__panel {
  position: absolute;
  right: 0;
  bottom: calc(100% + 12px);
  width: 280px;
  background: var(--pw-bg);
  border-radius: var(--pw-radius-lg);
  box-shadow: var(--pw-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.95);
  transform-origin: bottom right;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
  border: 1px solid var(--pw-border);
}

.promo-widget.is-expanded .promo-widget__panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.promo-widget__panel::after {
  content: '';
  position: absolute;
  right: 24px;
  bottom: -8px;
  width: 16px;
  height: 16px;
  background: var(--pw-bg);
  border-right: 1px solid var(--pw-border);
  border-bottom: 1px solid var(--pw-border);
  transform: rotate(45deg);
  box-shadow: 4px 4px 8px rgba(0, 0, 0, 0.04);
}

/* ========== 关闭按钮 ========== */
.promo-widget__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  border: none;
  background: var(--pw-bg-secondary);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  z-index: 10;
  outline: none;
}

.promo-widget__close:hover {
  background: var(--pw-border);
  transform: rotate(90deg);
}

.promo-widget__close svg {
  display: block;
  width: 14px;
  height: 14px;
  stroke: var(--pw-text-secondary);
  fill: none;
}

/* ========== 头部图片区 ========== */
.promo-widget__image-wrapper {
  position: relative;
  height: 100px;
  background: linear-gradient(135deg, var(--pw-primary), var(--pw-secondary));
  overflow: hidden;
}

.promo-widget__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

/* App图标 */
.promo-widget__app-icon {
  position: absolute;
  top: 76px;
  left: 20px;
  width: 56px;
  height: 56px;
  background: var(--pw-bg);
  border-radius: var(--pw-radius-md);
  box-shadow: var(--pw-shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 3px solid var(--pw-bg);
  z-index: 10;
  overflow: hidden;
}

.promo-widget__app-icon img {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}

/* ========== 内容区 ========== */
.promo-widget__content {
  padding: 32px 20px 20px;
}

.promo-widget__title {
  display: block;
  font-size: 17px;
  font-weight: 700;
  color: var(--pw-text);
  margin: 0 0 6px 0;
  line-height: 1.3;
}

.promo-widget__desc {
  display: block;
  font-size: 13px;
  color: var(--pw-text-secondary);
  margin: 0 0 16px 0;
  line-height: 1.5;
}

/* ========== 评分 ========== */
.promo-widget__rating {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 10px 12px;
  background: var(--pw-bg-secondary);
  border-radius: var(--pw-radius-sm);
}

.promo-widget__stars {
  display: flex;
  gap: 2px;
}

.promo-widget__stars svg {
  display: block;
  width: 14px;
  height: 14px;
  fill: #FBBF24;
}

.promo-widget__rating-text {
  font-size: 12px;
  color: var(--pw-text-secondary);
  line-height: 1;
}

.promo-widget__rating-score {
  font-weight: 700;
  color: var(--pw-text);
}

/* ========== 特性标签 ========== */
.promo-widget__features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.promo-widget__feature {
  display: inline-block;
  font-size: 11px;
  color: var(--pw-primary);
  background: rgba(79, 106, 246, 0.08);
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 500;
  line-height: 1;
}

/* ========== CTA 按钮 ========== */
.promo-widget__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--pw-primary), var(--pw-primary-dark));
  color: #fff;
  text-align: center;
  text-decoration: none;
  border-radius: var(--pw-radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s;
  box-shadow: 0 4px 12px rgba(79, 106, 246, 0.3);
  cursor: pointer;
  border: none;
  outline: none;
}

.promo-widget__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(79, 106, 246, 0.4);
  color: #fff;
  text-decoration: none;
}

.promo-widget__cta svg {
  display: block;
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
}

/* ========== 遮罩层 ========== */
.promo-widget__overlay {
  display: none;
}

/* ========== 动画 ========== */
@keyframes promo-entrance {
  0% {
    opacity: 0;
    transform: translateX(60px) scale(0.8);
  }
  100% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes promo-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes promo-badge-bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

/* ========== 状态 ========== */
.promo-widget.is-hidden {
  display: none !important;
}


/* ========== 移动端适配 ========== */
@media (max-width: 768px) {
  .promo-widget {
    right: 16px;
    bottom: calc(100px + env(safe-area-inset-bottom, 0px));
  }
  
  .promo-widget__trigger {
    padding: 10px 16px;
    gap: 6px;
  }
  
  .promo-widget__trigger-icon {
    width: 16px;
    height: 16px;
  }
  
  .promo-widget__trigger-text {
    font-size: 13px;
  }
  
  /* 移动端面板：底部弹出 */
  .promo-widget__panel {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    width: 100%;
    max-width: 100%;
    max-height: 85vh;
    margin: 0;
    border-radius: 20px 20px 0 0;
    transform: translateY(100%);
    transform-origin: bottom center;
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  
  .promo-widget.is-expanded .promo-widget__panel {
    transform: translateY(0);
  }
  
  .promo-widget__panel::after {
    display: none;
  }
  
  /* 顶部拖拽指示条 */
  .promo-widget__panel::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 4px;
    background: var(--pw-border);
    border-radius: 2px;
    z-index: 20;
  }
  
  .promo-widget__close {
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
  }
  
  .promo-widget__content {
    padding: 28px 20px calc(20px + env(safe-area-inset-bottom, 0px));
  }
  
  .promo-widget__cta {
    padding: 16px 24px;
    font-size: 16px;
  }
  
  /* 遮罩层 */
  .promo-widget__overlay {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: -1;
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
  }
  
  .promo-widget.is-expanded .promo-widget__overlay {
    opacity: 1;
    visibility: visible;
  }
}

/* ========== 小屏手机 ========== */
@media (max-width: 375px) {
  .promo-widget {
    right: 12px;
    bottom: calc(90px + env(safe-area-inset-bottom, 0px));
  }
  
  .promo-widget__trigger {
    padding: 8px 14px;
  }
  
  .promo-widget__trigger-text {
    font-size: 12px;
  }
  
  .promo-widget__badge {
    font-size: 9px;
    padding: 2px 5px;
  }
  
  .promo-widget__image-wrapper {
    height: 80px;
  }
  
  .promo-widget__app-icon {
    top: 56px;
    width: 48px;
    height: 48px;
  }
  
  .promo-widget__app-icon img {
    width: 32px;
    height: 32px;
  }
  
  .promo-widget__content {
    padding: 24px 16px calc(16px + env(safe-area-inset-bottom, 0px));
  }
  
  .promo-widget__title {
    font-size: 16px;
  }
}

/* ========== 横屏模式 ========== */
@media (max-width: 768px) and (orientation: landscape) {
  .promo-widget {
    bottom: 20px;
    right: calc(20px + env(safe-area-inset-right, 0px));
  }
  
  .promo-widget__panel {
    left: auto;
    right: 0;
    bottom: calc(100% + 12px);
    width: 300px;
    max-width: calc(100vw - 100px);
    max-height: calc(100vh - 80px);
    border-radius: var(--pw-radius-lg);
    padding-bottom: 0;
    transform: translateY(10px) scale(0.95);
    overflow-y: auto;
  }
  
  .promo-widget.is-expanded .promo-widget__panel {
    transform: translateY(0) scale(1);
  }
  
  .promo-widget__panel::before {
    display: none;
  }
  
  .promo-widget__content {
    padding: 28px 20px 20px;
  }
  
  .promo-widget__overlay {
    display: none;
  }
}

/* ========== 深色模式 ========== */
@media (prefers-color-scheme: dark) {
  .promo-widget {
    --pw-bg: #1E293B;
    --pw-bg-secondary: #334155;
    --pw-text: #F1F5F9;
    --pw-text-secondary: #94A3B8;
    --pw-border: #475569;
  }
  
  .promo-widget__panel::after {
    background: var(--pw-bg);
    border-color: var(--pw-border);
  }
}

/* ========== 无障碍 ========== */
@media (prefers-reduced-motion: reduce) {
  .promo-widget__trigger,
  .promo-widget__panel,
  .promo-widget__close,
  .promo-widget__cta,
  .promo-widget__badge {
    animation: none !important;
    transition: none !important;
  }
}

.promo-widget__trigger:focus-visible,
.promo-widget__close:focus-visible,
.promo-widget__cta:focus-visible {
  outline: 2px solid var(--pw-primary);
  outline-offset: 2px;
}