/**
 * ╔════════════════════════════════════════════════════════════╗
 * ║  CALINK — Animations & Interactions CSS                     ║
 * ║  所有动画仅使用 transform 和 opacity（GPU 加速）            ║
 * ║  遵循 prefers-reduced-motion 可访问性规范                   ║
 * ╚════════════════════════════════════════════════════════════╝
 */

/* ────────────────────────────────────────────────────────────
 * 1. 滚动渐现动画（基础类 + 方向变体）
 * ──────────────────────────────────────────────────────────── */

/* 基础 fade-in 状态：opacity 0，不可见 */
.fade-in {
  opacity: 0;
  will-change: transform, opacity;
}

/* 向上浮现 — 最常用 */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  will-change: transform, opacity;
}

.fade-in-up.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 向左浮现 */
.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  will-change: transform, opacity;
}

.fade-in-left.is-visible {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 向右浮现 */
.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  will-change: transform, opacity;
}

.fade-in-right.is-visible {
  opacity: 1;
  transform: translateX(0);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 向下浮现 */
.fade-in-down {
  opacity: 0;
  transform: translateY(-30px);
  will-change: transform, opacity;
}

.fade-in-down.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 缩放浮现（适合图片/图标） */
.fade-in-scale {
  opacity: 0;
  transform: scale(0.92);
  will-change: transform, opacity;
}

.fade-in-scale.is-visible {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ────────────────────────────────────────────────────────────
 * 2. 交错动画延迟（stagger-1 到 stagger-10）
 * ──────────────────────────────────────────────────────────── */
.stagger-1.is-visible  { transition-delay: 0.05s; }
.stagger-2.is-visible  { transition-delay: 0.10s; }
.stagger-3.is-visible  { transition-delay: 0.15s; }
.stagger-4.is-visible  { transition-delay: 0.20s; }
.stagger-5.is-visible  { transition-delay: 0.25s; }
.stagger-6.is-visible  { transition-delay: 0.30s; }
.stagger-7.is-visible  { transition-delay: 0.35s; }
.stagger-8.is-visible  { transition-delay: 0.40s; }
.stagger-9.is-visible  { transition-delay: 0.45s; }
.stagger-10.is-visible { transition-delay: 0.50s; }

/* 长列表交错（10-20） */
.stagger-11.is-visible { transition-delay: 0.55s; }
.stagger-12.is-visible { transition-delay: 0.60s; }
.stagger-13.is-visible { transition-delay: 0.65s; }
.stagger-14.is-visible { transition-delay: 0.70s; }
.stagger-15.is-visible { transition-delay: 0.75s; }
.stagger-16.is-visible { transition-delay: 0.80s; }
.stagger-17.is-visible { transition-delay: 0.85s; }
.stagger-18.is-visible { transition-delay: 0.90s; }
.stagger-19.is-visible { transition-delay: 0.95s; }
.stagger-20.is-visible { transition-delay: 1.00s; }

/* ────────────────────────────────────────────────────────────
 * 3. 按钮悬停状态
 * ──────────────────────────────────────────────────────────── */
.hover-lift {
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.10);
}

.hover-lift:active {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
}

.hover-brightness {
  transition: filter 0.25s ease, transform 0.25s ease;
}

.hover-brightness:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
}

.hover-brightness:active {
  transform: translateY(0);
  filter: brightness(0.98);
}

/* 按钮点击时的微缩反馈 */
.btn-click-feedback {
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-click-feedback:active {
  transform: scale(0.96);
}

/* ────────────────────────────────────────────────────────────
 * 4. 图片悬停效果
 * ──────────────────────────────────────────────────────────── */

/* 图片放大悬停（容器需要 overflow: hidden） */
.hover-zoom {
  overflow: hidden;
}

.hover-zoom img,
.hover-zoom .img-target {
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.hover-zoom:hover img,
.hover-zoom:hover .img-target {
  transform: scale(1.08);
}

/* 图片切换悬停（产品图切换效果） */
.hover-switch {
  position: relative;
  overflow: hidden;
}

.hover-switch .img-primary,
.hover-switch .img-secondary {
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-switch .img-secondary {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.05);
}

.hover-switch:hover .img-primary {
  opacity: 0;
  transform: scale(0.95);
}

.hover-switch:hover .img-secondary {
  opacity: 1;
  transform: scale(1);
}

/* 悬停时显示叠加层 */
.hover-overlay {
  position: relative;
  overflow: hidden;
}

.hover-overlay .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: background 0.3s ease, opacity 0.3s ease;
}

.hover-overlay:hover .overlay {
  background: rgba(0, 0, 0, 0.20);
  opacity: 1;
}

/* ────────────────────────────────────────────────────────────
 * 5. 购物车角标弹跳动画
 * ──────────────────────────────────────────────────────────── */
@keyframes badge-bounce {
  0%   { transform: scale(1); }
  20%  { transform: scale(1.3); }
  40%  { transform: scale(0.9); }
  60%  { transform: scale(1.15); }
  80%  { transform: scale(0.95); }
  100% { transform: scale(1); }
}

.badge-bounce {
  animation: badge-bounce 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

/* ────────────────────────────────────────────────────────────
 * 7. 骨架屏 shimmer 动画
 * ──────────────────────────────────────────────────────────── */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-cool) 25%,
    var(--color-white) 50%,
    var(--color-bg-cool) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--space-xs);
}

.skeleton-text:last-child {
  width: 80%;
  margin-bottom: 0;
}

.skeleton-img {
  width: 100%;
  aspect-ratio: 1 / 1;
}

.skeleton-circle {
  border-radius: var(--radius-full);
}

/* ────────────────────────────────────────────────────────────
 * 8. 弹窗/模态框动画
 * ──────────────────────────────────────────────────────────── */

/* ── 模态框进入 ── */
@keyframes modal-enter {
  from {
    opacity: 0;
    transform: scale(0.92) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes modal-backdrop-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-enter {
  animation: modal-enter 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.modal-backdrop-enter {
  animation: modal-backdrop-enter 0.2s ease forwards;
}

/* ── 模态框退出 ── */
@keyframes modal-exit {
  from {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  to {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }
}

@keyframes modal-backdrop-exit {
  from { opacity: 1; }
  to { opacity: 0; }
}

.modal-exit {
  animation: modal-exit 0.2s ease forwards;
}

.modal-backdrop-exit {
  animation: modal-backdrop-exit 0.2s ease forwards;
}

/* ── 抽屉进入（从右侧滑入） ── */
@keyframes drawer-enter {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes drawer-backdrop-enter {
  from { opacity: 0; }
  to { opacity: 1; }
}

.drawer-enter {
  animation: drawer-enter 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.drawer-backdrop-enter {
  animation: drawer-backdrop-enter 0.25s ease forwards;
}

/* ── 抽屉退出 ── */
@keyframes drawer-exit {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(100%);
  }
}

@keyframes drawer-backdrop-exit {
  from { opacity: 1; }
  to { opacity: 0; }
}

.drawer-exit {
  animation: drawer-exit 0.25s ease forwards;
}

.drawer-backdrop-exit {
  animation: drawer-backdrop-exit 0.2s ease forwards;
}

/* ── 从底部弹出的 Toast ── */
@keyframes toast-enter {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes toast-exit {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
  }
}

.toast-enter {
  animation: toast-enter 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast-exit {
  animation: toast-exit 0.2s ease forwards;
}

/* ────────────────────────────────────────────────────────────
 * 9. 页面加载序列动画
 * ──────────────────────────────────────────────────────────── */
@keyframes page-load-fade {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-load-seq > * {
  opacity: 0;
  animation: page-load-fade 0.5s ease forwards;
}

.page-load-seq > *:nth-child(1)  { animation-delay: 0.05s; }
.page-load-seq > *:nth-child(2)  { animation-delay: 0.10s; }
.page-load-seq > *:nth-child(3)  { animation-delay: 0.15s; }
.page-load-seq > *:nth-child(4)  { animation-delay: 0.20s; }
.page-load-seq > *:nth-child(5)  { animation-delay: 0.25s; }
.page-load-seq > *:nth-child(6)  { animation-delay: 0.30s; }
.page-load-seq > *:nth-child(7)  { animation-delay: 0.35s; }
.page-load-seq > *:nth-child(8)  { animation-delay: 0.40s; }
.page-load-seq > *:nth-child(9)  { animation-delay: 0.45s; }
.page-load-seq > *:nth-child(10) { animation-delay: 0.50s; }

/* 页面整体淡入 */
@keyframes page-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.page-fade-in {
  animation: page-fade-in 0.4s ease forwards;
}

/* ────────────────────────────────────────────────────────────
 * 10. 平滑滚动（全局）
 * ──────────────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

/* 自定义滚动条（可选，WebKit 浏览器） */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ────────────────────────────────────────────────────────────
 * 11. 旋转/加载动画
 * ──────────────────────────────────────────────────────────── */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spin {
  animation: spin 0.8s linear infinite;
}

.spin-slow {
  animation: spin 1.5s linear infinite;
}

/* ────────────────────────────────────────────────────────────
 * 12. 成功/错误状态动画
 * ──────────────────────────────────────────────────────────── */
@keyframes success-pop {
  0%   { transform: scale(0.5); opacity: 0; }
  50%  { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

.success-pop {
  animation: success-pop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

.shake {
  animation: shake 0.4s ease-in-out both;
}

/* ────────────────────────────────────────────────────────────
 * 13. 计数器翻转动画（数量变化）
 * ──────────────────────────────────────────────────────────── */
@keyframes count-flip {
  0%   { transform: translateY(0); opacity: 1; }
  40%  { transform: translateY(-8px); opacity: 0; }
  60%  { transform: translateY(8px); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

.count-flip {
  display: inline-block;
  animation: count-flip 0.3s ease-in-out;
}

/* ────────────────────────────────────────────────────────────
 * 14. 下拉菜单/手风琴动画
 * ──────────────────────────────────────────────────────────── */
@keyframes dropdown-enter {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.dropdown-enter {
  animation: dropdown-enter 0.2s ease forwards;
  transform-origin: top center;
}

@keyframes accordion-open {
  from {
    max-height: 0;
    opacity: 0;
  }
  to {
    max-height: 500px;
    opacity: 1;
  }
}

.accordion-open {
  animation: accordion-open 0.3s ease forwards;
  overflow: hidden;
}

/* ────────────────────────────────────────────────────────────
 * 17.  prefers-reduced-motion 覆盖
 * ──────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .fade-in-up,
  .fade-in-left,
  .fade-in-right,
  .fade-in-down,
  .fade-in-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .fade-in-up.is-visible,
  .fade-in-left.is-visible,
  .fade-in-right.is-visible,
  .fade-in-down.is-visible,
  .fade-in-scale.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .stagger-1.is-visible,
  .stagger-2.is-visible,
  .stagger-3.is-visible,
  .stagger-4.is-visible,
  .stagger-5.is-visible,
  .stagger-6.is-visible,
  .stagger-7.is-visible,
  .stagger-8.is-visible,
  .stagger-9.is-visible,
  .stagger-10.is-visible,
  .stagger-11.is-visible,
  .stagger-12.is-visible,
  .stagger-13.is-visible,
  .stagger-14.is-visible,
  .stagger-15.is-visible,
  .stagger-16.is-visible,
  .stagger-17.is-visible,
  .stagger-18.is-visible,
  .stagger-19.is-visible,
  .stagger-20.is-visible {
    transition-delay: 0s !important;
  }

  .badge-bounce,
  .skeleton,
  .spin,
  .spin-slow,
  .success-pop,
  .shake,
  .modal-enter,
  .modal-exit,
  .drawer-enter,
  .drawer-exit,
  .toast-enter,
  .toast-exit,
  .dropdown-enter,
  .accordion-open,
  .page-load-seq > *,
  .page-fade-in {
    animation: none !important;
    transition: none !important;
    opacity: 1;
    transform: none;
  }
}

/* ════════════════════════════════════════════════════════════
 * CALINK Motion & Premium Experience System V1 (2026-10-07)
 * 统一 Motion Language：克制 / 高级 / 性能友好。
 * 时长/缓动令牌定义于 design-system.css :root。
 * 既有 fade-in-* / stagger / reveal-img 兼容类继续可用。
 * ════════════════════════════════════════════════════════════ */

/* 统一：既有 fade-in-* 时长与缓动收敛到令牌（不改类名、不破坏现有用法） */
.fade-in-up.is-visible,
.fade-in-left.is-visible,
.fade-in-right.is-visible,
.fade-in-down.is-visible,
.fade-in-scale.is-visible {
  transition-duration: var(--motion-reveal, 620ms);
  transition-timing-function: var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
}

/* ── MOTION 01 — Editorial Reveal（标题/文案/CTA/section intro）
   opacity 0→1 + translateY(16px→0)，克制 smooth，无弹性无 overshoot ── */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  will-change: transform, opacity;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--motion-reveal, 620ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1)),
              transform var(--motion-reveal, 620ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
}

/* ── MOTION 03 — Micro Hover（卡片/可点击图/编辑链接）
   translateY(-2~-4px) + 轻 scale，克制不浮夸。touch 环境自动禁用 ── */
.micro-lift {
  transition: transform var(--motion-micro, 280ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1)),
              box-shadow var(--motion-micro, 280ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1)),
              border-color var(--motion-micro, 280ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1));
}
@media (hover: hover) and (pointer: fine) {
  .micro-lift:hover { transform: translateY(-3px); }
}

/* ── MOTION 04 — Slow Image Drift（仅 hero/E.O.W. 大图，JS rAF 驱动） ── */
.drift-slow {
  overflow: hidden;
  will-change: transform;
}
.drift-slow img {
  will-change: transform;
}

/* ── MOTION 06 — Sequential Process（01/02/03 节点轻微 stagger 出现） ── */
.seq > * {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--motion-reveal, 620ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1)),
              transform var(--motion-reveal, 620ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1));
}
.seq.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.seq.is-visible > *:nth-child(2) { transition-delay: 90ms; }
.seq.is-visible > *:nth-child(3) { transition-delay: 180ms; }
.seq.is-visible > *:nth-child(4) { transition-delay: 270ms; }
.seq.is-visible > *:nth-child(5) { transition-delay: 360ms; }
.seq.is-visible > *:nth-child(6) { transition-delay: 450ms; }
.seq.is-visible > *:nth-child(n+7) { transition-delay: 450ms; }
.seq.is-visible > * { opacity: 1; transform: translateY(0); }

/* ── MOTION 05 — Data Motion（AI/roast curve/data 数值按序淡入）
   曲线绘制由 .curve-drawn 触发（见 calink.css） ── */
.data-reveal {
  opacity: 0;
  transform: translateY(4px);
}
.data-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--motion-base, 420ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1)),
              transform var(--motion-base, 420ms) var(--ease-standard, cubic-bezier(0.4, 0, 0.2, 1));
}

/* ── Mobile degradation（≤768px）：关闭 scroll-linked drift 与 heavy hover，
    保留 fade reveal / image reveal / 短 stagger / accordion ── */
@media (max-width: 768px) {
  .drift-slow,
  .drift-slow img {
    transform: none !important;
    will-change: auto;
  }
}

/* ── prefers-reduced-motion：新增 primitives 一律立即可见，
    绝不让内容因动画关闭而永久 opacity:0 ── */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .micro-lift,
  .drift-slow,
  .seq > *,
  .data-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    animation: none !important;
    will-change: auto;
  }
  .seq.is-visible > * { transition-delay: 0s !important; }
}

/* ── Fail-open（uicraft）：无 JS 时内容立即可见 ──
   reveal 隐藏态依赖 IntersectionObserver 加 .is-visible；
   脚本失败 / 被禁用 / 爬虫访问时 <html> 无 .has-js，
   下面强制所有 reveal 元素可见，绝不因动画而整页空白。 */
html:not(.has-js) .fade-in,
html:not(.has-js) .fade-in-up,
html:not(.has-js) .fade-in-left,
html:not(.has-js) .fade-in-right,
html:not(.has-js) .fade-in-down,
html:not(.has-js) .fade-in-scale,
html:not(.has-js) .reveal,
html:not(.has-js) .reveal-img,
html:not(.has-js) .seq > *,
html:not(.has-js) .data-reveal,
html:not(.has-js) .ai-data-value {
  opacity: 1 !important;
  transform: none !important;
  clip-path: none !important;
  transition: none !important;
}