/* voices.css —— 「听听我们的意见」动态纸片墙
   严格按 PRD V1.0：16张竖版便笺 4×4 / Paper Flutter Hover / Focus Card Expansion / 暖白雾 Backdrop */

:root{
  --v-warm:#F8F3EC;
  --v-warm-2:#FBF7F2;
  --v-rose:#E93D77;
  --v-rose-deep:#C72E61;
  --v-ink:#2A1E23;
  --v-muted:#7B6B70;
  --v-line:#E8DDE2;
  --v-pink:#F6DDE6;
  --v-blue:#DCEAF5;
  --v-yellow:#F5E9B8;
  --v-green:#E6EFD9;
  --v-white:#FBF7F2;
  --v-serif:Georgia,"Songti SC","STSong","SimSun",serif;
  --v-hand:"Kaiti SC","STKaiti","KaiTi","Ma Shan Zheng",cursive;
  --v-sans:"Microsoft YaHei","PingFang SC",sans-serif;
}

.theme-voices{
  --accent:var(--v-rose);
  --dark:var(--v-ink);
  --ink:var(--v-ink);
  --line:var(--v-line);
  --muted:var(--v-muted);
  --header-height:88px;
  color:var(--v-ink);
}
body.theme-voices{background:url("assets/voices/bg-wall.jpg") center top/cover no-repeat fixed;color:var(--v-ink);font-family:var(--v-sans);overflow-x:hidden}
.theme-voices .site-header nav>a{color:var(--v-ink);opacity:.72}
.theme-voices .site-header nav>a:hover{opacity:1;color:var(--v-rose)}
.theme-voices .site-header nav>a[aria-current=page]{color:var(--v-rose);opacity:1}

/* ── Mast 标题区 ── */
.voices-mast{
  position:relative;overflow:hidden;
  background:transparent;
  text-align:center;
  padding:clamp(80px,10vw,140px) clamp(24px,6vw,80px) clamp(36px,4.5vw,56px);
}
.voices-mast .eyebrow{
  margin-bottom:14px;color:var(--v-rose);letter-spacing:.22em;font-size:11px;font-weight:600;
}
.voices-mast h1{
  margin:0 0 18px;font-size:clamp(34px,4.8vw,58px);line-height:1.3;font-weight:400;
  letter-spacing:.02em;color:var(--v-ink);font-family:var(--v-serif);
}
.voices-mast h1 em{font-style:normal;color:var(--v-rose)}
.voices-mast>p{
  max-width:600px;margin:0 auto;color:var(--v-muted);font-size:14px;line-height:2;
}

/* ── 纸片墙 ── */
.voices-wall{
  padding:clamp(80px,8vw,130px) clamp(24px,6vw,80px) clamp(60px,6vw,100px);
  position:relative;
}
.voices-wall::before{
  content:"";position:absolute;inset:0;
  background:rgba(255,250,245,0.30);
  pointer-events:none;
}
.voices-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(22px,2.4vw,32px) clamp(24px,2.6vw,34px);
  max-width:1400px;margin-inline:auto;
  perspective:1400px;
  position:relative;z-index:1;
}

/* ── 底部桌面静物区 ── */
.voices-desk{
  height:clamp(160px,18vw,240px);
  background:url("assets/voices/desk-stilllife.jpg") center bottom/cover no-repeat;
  position:relative;
  margin-top:-1px;
}
.voices-desk::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(255,250,245,0) 0%,rgba(255,250,245,0.15) 100%);
  pointer-events:none;
}

/* ── 单张纸片 ── */
.opinion-card{
  position:relative;
  aspect-ratio:1/1;
  padding:clamp(20px,1.8vw,28px) clamp(18px,1.6vw,24px) clamp(18px,1.6vw,24px);
  background:var(--pc,var(--v-white));
  border:none;cursor:pointer;
  text-align:left;
  font-family:inherit;color:var(--v-ink);
  box-shadow:0 3px 10px -4px rgba(60,40,48,.12),0 1px 3px rgba(60,40,48,.06);
  transform:rotateZ(var(--tz,0deg));
  transform-origin:50% 42%;
  transition:box-shadow .2s cubic-bezier(.22,.75,.22,1);
  will-change:transform;
  overflow:visible;
  -webkit-appearance:none;appearance:none;
  display:flex;flex-direction:column;
}
/* 纸纹 */
.opinion-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.16 0 0 0 0 0.12 0 0 0 0 0.14 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;border-radius:inherit;
}
/* 毛边 */
.opinion-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  border-radius:2px;
  box-shadow:inset 0 0 0 1px rgba(60,40,48,.04);
}
/* 胶带 */
.opinion-card .tape{
  position:absolute;top:-10px;left:50%;transform:translateX(-50%) rotate(-3deg);
  width:72px;height:22px;
  background:rgba(233,61,119,.18);
  border-left:1px dashed rgba(233,61,119,.25);
  border-right:1px dashed rgba(233,61,119,.25);
  z-index:2;pointer-events:none;
}
.opinion-card .tape.blue{background:rgba(70,110,180,.16);border-color:rgba(70,110,180,.22)}
.opinion-card .tape.yellow{background:rgba(200,170,50,.18);border-color:rgba(200,170,50,.25)}
/* 图钉 */
.opinion-card .pin{
  position:absolute;top:10px;z-index:2;pointer-events:none;
  width:14px;height:14px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,#fff 0%,var(--v-rose) 40%,var(--v-rose-deep) 100%);
  box-shadow:0 2px 4px rgba(0,0,0,.2);
}
.opinion-card .pin.left{left:12px}
.opinion-card .pin.right{right:12px}
.opinion-card .pin.blue{background:radial-gradient(circle at 35% 30%,#fff 0%,#5B82C4 40%,#3A5A9A 100%)}
.opinion-card .pin.green{background:radial-gradient(circle at 35% 30%,#fff 0%,#7BA85E 40%,#5A8A40 100%)}

/* 纸片内容 */
.opinion-card .card-inner{position:relative;z-index:1;flex:1;display:flex;flex-direction:column}
.opinion-card .doodle{
  font-size:16px;color:var(--v-rose);opacity:.7;margin-bottom:8px;line-height:1;
}
.opinion-card .short{
  font-family:var(--v-serif);
  font-size:clamp(14px,1.15vw,17px);
  line-height:1.75;font-weight:500;color:var(--v-ink);
  margin:0;flex:1;
}
.opinion-card .meta{
  margin-top:12px;font-size:10.5px;color:var(--v-muted);letter-spacing:.08em;
  font-family:var(--v-sans);opacity:.7;
}

/* Hover 态由 JS 写 transform，这里只定义阴影过渡 */
.opinion-card:hover{
  box-shadow:0 16px 36px -10px rgba(60,40,48,.22),0 4px 12px rgba(60,40,48,.08);
  z-index:5;
}
.opinion-card:focus-visible{
  outline:2px solid var(--v-rose);outline-offset:4px;
}

/* ── Focus Overlay 聚焦放大层 ── */
.voices-focus{
  position:fixed;inset:0;z-index:100;
  display:none;align-items:center;justify-content:center;
  padding:clamp(16px,4vw,48px);
}
.voices-focus.open{display:flex}
.voices-focus .backdrop{
  position:absolute;inset:0;
  background:rgba(250,246,242,.46);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  cursor:pointer;
  opacity:0;transition:opacity .4s ease;
}
.voices-focus.open .backdrop{opacity:1}
.voices-focus .expanded{
  position:relative;z-index:2;
  width:min(560px,calc(100vw - 32px));
  max-height:78vh;
  background:var(--pc,var(--v-white));
  padding:clamp(28px,3.5vw,44px) clamp(24px,3vw,36px) clamp(24px,2.8vw,36px);
  box-shadow:0 28px 70px rgba(60,40,48,.18);
  overflow-y:auto;
  transform-origin:center center;
  will-change:transform,opacity;
}
.voices-focus .expanded::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.16 0 0 0 0 0.12 0 0 0 0 0.14 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;
}
.voices-focus .close-btn{
  position:absolute;top:14px;right:14px;z-index:3;
  width:36px;height:36px;border:none;background:transparent;
  cursor:pointer;display:grid;place-items:center;
  color:var(--v-muted);font-size:20px;line-height:1;
  border-radius:50%;transition:background .2s,color .2s;
}
.voices-focus .close-btn:hover{background:rgba(60,40,48,.06);color:var(--v-ink)}
.voices-focus .expanded .doodle{font-size:22px;color:var(--v-rose);opacity:.8;margin-bottom:14px}
.voices-focus .expanded .full-title{
  font-family:var(--v-serif);font-size:clamp(18px,2vw,24px);line-height:1.7;
  font-weight:600;color:var(--v-ink);margin:0 0 18px;
}
.voices-focus .expanded .full-body{
  font-family:var(--v-serif);font-size:clamp(14.5px,1.3vw,16.5px);line-height:2.1;
  color:var(--v-ink);margin:0 0 20px;letter-spacing:.01em;
}
.voices-focus .expanded .full-meta{
  font-size:11px;color:var(--v-muted);letter-spacing:.1em;
  border-top:1px solid rgba(60,40,48,.08);padding-top:14px;
}

/* ── 底部返回 ── */
.voices-back{
  text-align:center;padding:clamp(32px,4vw,52px) clamp(24px,6vw,80px) clamp(56px,7vw,90px);
  background:transparent;
}
.voices-back .text-link{
  font-size:13px;color:var(--v-rose);border-color:var(--v-rose);
  font-weight:500;
}
.voices-back .text-link:hover{color:var(--v-rose-deep)}

/* ── 响应式 ── */
@media(max-width:1199px){
  .voices-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:860px){
  .voices-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 14px}
  .opinion-card{aspect-ratio:0.95/1;padding:16px 14px}
  .opinion-card .short{font-size:13.5px}
  .voices-mast h1{font-size:32px}
}
@media(max-width:520px){
  .voices-grid{grid-template-columns:1fr 1fr;gap:14px 12px}
  .opinion-card{aspect-ratio:1/1;padding:14px 12px}
  .opinion-card .short{font-size:12.5px;line-height:1.7}
  .opinion-card .tape{width:56px;height:18px;top:-8px}
  .voices-focus .expanded{max-height:84vh}
}

/* ── Reduced Motion ── */
@media(prefers-reduced-motion:reduce){
  .opinion-card{transition:none}
  .opinion-card:hover{transform:rotateZ(var(--tz,0deg)) scale(1.01)!important;box-shadow:0 6px 16px -6px rgba(60,40,48,.16)}
  .voices-focus .backdrop,.voices-focus .expanded{transition:none}
}