/* ============================================================
   work.css — 04 · 作品集 Work
   规格 27 五件作品围成一个环 / 28 点卡片滚到那一段 / 29 滚到哪件转盘转到哪件
   ------------------------------------------------------------
   卡片贴在圆柱面上跟着一起转（rotateY + translateZ），侧面的卡是斜的、
   压成梯形，背面的会镜像 —— 立体感来自这里。

   注：设计稿的实现说明原本要求「不用 rotateY、卡片永远直立」，
   看过两种效果的实物对比之后改成了现在这版真 3D。二维模拟那版的
   算法留在 _compare-carousel.html 里，要换回去可以直接取。
   ============================================================ */

.work {
  position: relative;
  z-index: 1;
  background: var(--d-bg-alt);
  padding: calc(var(--nav-h) + 68px) 24px 0;
  overflow: hidden;
}

.wk-header { margin-bottom: 30px; }

/* —— 转盘舞台 —— */
.wk-stage {
  position: relative;
  height: 560px;
  margin: 0 auto;
  max-width: 1440px;
  perspective: 1500px;
  perspective-origin: 50% 46%;
  touch-action: pan-y;     /* 竖向留给页面，横向手势拿来转环 */
  cursor: grab;
  user-select: none;
}
.wk-stage.is-dragging { cursor: grabbing; }

/* 轨道整体后退一个半径，正对的那张才落在 Z=0。
   不补偿的话它离镜头太近，会被透视放大到溢出容器。 */
.wk-track {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transform: translateZ(calc(var(--wk-r, 460px) * -1));
}

.wk-card {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 360px;
  height: 464px;
  margin: -232px 0 0 -180px;
  transform-origin: 50% 50%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--d-bg);
  border: 1.6px solid var(--pencil);
  box-shadow: 7px 9px 0 rgba(90, 90, 90, .16);
  /* 手绘感在 3D 里不能丢：圆角照样呼吸 */
  border-radius: 26px 8px 23px 8px;
  animation: wkFrame 9s ease-in-out infinite;
  will-change: transform;
  pointer-events: none;    /* 转到侧后方的卡不可点，由 JS 放开正面几张 */
}
@keyframes wkFrame {
   0%, 100% { border-radius: 26px  8px 23px  8px; }
  33%       { border-radius: 21px 12px 28px  6px; }
  66%       { border-radius: 30px  6px 19px 11px; }
}

.wk-card.is-hot { pointer-events: auto; cursor: pointer; }

/* 缩略图 */
.wk-card__thumb {
  position: relative;
  height: 262px;
  flex: 0 0 auto;
  background: var(--wk-c);
  overflow: hidden;
}
/* 专属色上盖一层米白，只留很淡的色调 */
.wk-card__thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 253, 245, .8);
  transition: background-color .3s ease;
}
.wk-card.is-hot:hover .wk-card__thumb::after { background: rgba(255, 253, 245, .68); }

/* stroke / fill 写在 svg 上靠继承传给子元素。
   写成 `.wk-card__art [stroke]` 是选不中的 —— 那些图形元素本来就没有
   stroke 属性，而 SVG 的 stroke 默认是 none，结果一根线都画不出来。 */
.wk-card__art {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  stroke: var(--pencil);
  fill: none;
}

.wk-card__kind {
  position: absolute;
  left: 18px; top: 18px;
  z-index: 2;
  padding: 5px 12px;
  border-radius: 12px 4px 11px 4px;
  background: var(--wk-c);
  font-family: var(--font-body);
  font-size: 15px; line-height: 1.72;
  color: #fff;
  white-space: nowrap;
}

/* 信息区 */
.wk-card__info {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 17px 20px;
}
.wk-card__row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.wk-card__title {
  font-family: var(--font-body);
  font-size: 20px; font-weight: 700; line-height: 1.4;
  color: var(--pencil);
}
.wk-card__num {
  font-family: var(--font-body);
  font-size: 19px; font-weight: 700; line-height: 1.4;
  color: var(--wk-c); opacity: .75;
}
.wk-card__desc {
  font-family: var(--font-body);
  font-size: 14px; line-height: 1.65;
  color: var(--pencil); opacity: .75;
  margin: 0;
}
.wk-card__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.wk-card__tag {
  padding: 3px 9px;
  border: .9px solid var(--pencil);
  border-radius: 7px 3px 6px 3px;
  opacity: .6;
  font-family: var(--font-body);
  font-size: 15px; line-height: 1.72;
  color: var(--pencil);
  white-space: nowrap;
}
.wk-card__cta {
  margin-top: auto;
  display: flex; align-items: center; gap: 7px;
  font-family: var(--font-body);
  font-size: 15.5px; font-weight: 500; line-height: 1.72;
  color: var(--wk-c);
}
.wk-card__cta svg { width: 11px; height: 9px; fill: none; stroke: var(--wk-c); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s ease; }
.wk-card.is-hot:hover .wk-card__cta svg { transform: translateX(4px); }

/* —— 拖动提示 —— */
.wk-hint {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  margin-top: 6px;
}
.wk-hint svg { fill: none; stroke: var(--pencil); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.wk-hint__arrow { width: 26px; height: 14px; opacity: .45; }
.wk-hint__hand  { width: 30px; height: 32px; fill: var(--d-bg-alt); }
.wk-hint span {
  font-family: var(--font-body);
  font-size: 15.5px; line-height: 1.68;
  color: var(--pencil); opacity: .6;
}

/* 点击说明：光靠 cursor 变手型，多数人不会想到卡片能点 */
.wk-tip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 9px 0 0;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--pencil);
  opacity: .45;
}
.wk-tip svg {
  width: 15px; height: 15px;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--pencil);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* —— 分页圆点 —— */
.wk-dots { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 18px; padding-bottom: 54px; }
.wk-dot {
  width: 11px; height: 11px;
  padding: 0; border: 0;
  border-radius: 6px 3px 6px 3px;
  background: var(--dot-c);
  opacity: .3;
  cursor: pointer;
  transition: width .35s var(--ease-out-soft), opacity .35s ease;
}
.wk-dot.is-on { width: 30px; opacity: 1; }

/* —— 28 · 作品详情就在转盘下方，不是弹窗 —— */
.wk-section {
  position: relative;
  z-index: 1;
  /* 顶部 sticky 导航会压住标题，留出偏移量 */
  scroll-margin-top: 96px;
  min-height: 70vh;
  padding: 70px 24px;
}
.wk-section__inner { max-width: 1200px; margin: 0 auto; }
.wk-section__head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 14px; }
.wk-section__num {
  font-family: var(--font-marker);
  font-size: 36px; line-height: 1.2;
  color: var(--wk-c);
}
.wk-section__title {
  font-family: var(--font-body);
  font-size: 32px; font-weight: 700; line-height: 1.4;
  color: var(--pencil);
  margin: 0;
}
.wk-section__desc {
  font-family: var(--font-body);
  font-size: 16px; line-height: 1.8;
  color: var(--pencil); opacity: .75;
  max-width: 760px;
  margin: 0 0 20px;
}
.wk-section__todo {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 9px 16px;
  border: 1.4px dashed rgba(90, 90, 90, .3);
  border-radius: 16px 6px 14px 6px;
  font-family: var(--font-body);
  font-size: 14.5px; line-height: 1.72;
  color: var(--pencil); opacity: .5;
}

@media (prefers-reduced-motion: reduce) {
  .wk-card { animation: none; }
}

/* —— 窄屏降级成横向滑动的 2D 轮播，小屏做 3D 会发糊 —— */
@media (max-width: 900px) {
  .wk-stage {
    height: auto;
    perspective: none;
    cursor: default;
  }
  .wk-track {
    position: relative;
    inset: auto;
    transform: none;
    transform-style: flat;
    display: flex;
    gap: 18px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 4px 4px 18px;
  }
  .wk-card {
    position: relative;
    left: auto; top: auto; margin: 0;
    flex: 0 0 min(300px, 78vw);
    height: auto;
    transform: none !important;
    opacity: 1 !important;
    scroll-snap-align: center;
    pointer-events: auto;
    cursor: pointer;
  }
  .wk-card__thumb { height: 190px; }
  .wk-card__title { font-size: 19px; }
  .wk-hint { display: none; }
  .wk-tip { margin-top: 2px; }
}