/* style.css */

/* ============ 基础 ============ */
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
:root{
  --r: 24px;
  --stroke: rgba(255,255,255,.30);
  --txt: #ffffff;
  --dim: rgba(255,255,255,.62);
}
html,body{height:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  color:var(--txt);
  background:#06060d;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  touch-action:manipulation;
}
button{font-family:inherit;}

/* ============ 背景光斑（用 transform 动画，GPU 加速） ============ */
.bg{
  position:fixed;inset:0;z-index:0;overflow:hidden;
  pointer-events:none;
  background:
    radial-gradient(1100px 780px at 15% -5%, #1d1245 0%, transparent 62%),
    radial-gradient(900px 700px at 95% 12%, #06283d 0%, transparent 58%),
    #05050c;
}
.blob{
  position:absolute;border-radius:50%;
  filter:blur(64px);opacity:.60;
  mix-blend-mode:screen;
  will-change:transform;
  transform:translate3d(0,0,0);
}
.b1{width:46vmax;height:46vmax;background:#7b5cff;top:-14vmax;left:-12vmax;animation:f1 22s ease-in-out infinite;}
.b2{width:36vmax;height:36vmax;background:#00d4ff;bottom:-12vmax;right:-10vmax;animation:f2 26s ease-in-out infinite;}
.b3{width:28vmax;height:28vmax;background:#ff4fa3;top:36%;left:52%;animation:f3 30s ease-in-out infinite;}
.b4{width:24vmax;height:24vmax;background:#2bffb0;bottom:14%;left:2%;animation:f1 24s ease-in-out infinite reverse;}
@keyframes f1{
  0%,100%{transform:translate3d(0,0,0) scale(1);}
  33%{transform:translate3d(7vmax,5vmax,0) scale(1.12);}
  66%{transform:translate3d(-4vmax,9vmax,0) scale(.94);}
}
@keyframes f2{
  0%,100%{transform:translate3d(0,0,0) scale(1);}
  50%{transform:translate3d(-9vmax,-7vmax,0) scale(1.16);}
}
@keyframes f3{
  0%,100%{transform:translate3d(0,0,0) scale(1);}
  40%{transform:translate3d(-8vmax,4vmax,0) scale(.9);}
  75%{transform:translate3d(5vmax,-6vmax,0) scale(1.08);}
}
.noise{
  position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.045;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============ 液态玻璃基类 ============ */
.glass{
  position:relative;
  background:linear-gradient(135deg,
    rgba(255,255,255,.18) 0%,
    rgba(255,255,255,.05) 46%,
    rgba(255,255,255,.12) 100%);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border:1px solid var(--stroke);
  border-radius:var(--r);
  box-shadow:
    0 12px 34px rgba(0,0,0,.34),
    inset 0 1px 1px rgba(255,255,255,.55),
    inset 0 -1px 1px rgba(255,255,255,.10);
  isolation:isolate;
}
.glass::before{
  content:'';position:absolute;inset:0;border-radius:inherit;
  pointer-events:none;z-index:1;
  background:linear-gradient(115deg,
    rgba(255,255,255,.50) 0%,
    rgba(255,255,255,0) 26%,
    rgba(255,255,255,0) 68%,
    rgba(255,255,255,.26) 100%);
  opacity:.5;mix-blend-mode:overlay;
}

/* 玻璃图标底座（去 backdrop-filter 换性能） */
.ic-glass{
  display:grid;place-items:center;
  width:46px;height:46px;flex:0 0 auto;
  border-radius:16px;
  background:linear-gradient(145deg, rgba(255,255,255,.30), rgba(255,255,255,.06));
  border:1px solid rgba(255,255,255,.42);
  box-shadow:
    0 6px 18px rgba(0,0,0,.26),
    inset 0 1px 1px rgba(255,255,255,.72),
    inset 0 -7px 14px rgba(255,255,255,.10);
  color:#fff;
  transition:transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s ease;
}
.ic-glass:hover{transform:translateY(-1px);}
.ic{width:20px;height:20px;display:block;fill:none;stroke:currentColor;
    stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 应用容器 ============ */
.app{
  position:relative;z-index:1;
  height:100vh;height:100dvh;
  max-width:920px;margin:0 auto;
  padding:0 14px;
  display:flex;flex-direction:column;
}

/* 顶栏 */
.topbar{
  flex:0 0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 12px;margin:12px 0 10px;border-radius:22px;
}
.brand{display:flex;align-items:center;gap:11px;min-width:0;}
.brand-title{font-size:15px;font-weight:700;letter-spacing:.3px;line-height:1.15;}
.brand-sub{font-size:11px;color:var(--dim);margin-top:2px;}
.sync-pill{
  display:flex;align-items:center;gap:6px;
  padding:7px 12px;border-radius:99px;font-size:11.5px;color:var(--dim);
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.20);
  white-space:nowrap;
}
.dot{
  width:7px;height:7px;border-radius:50%;background:#2bffb0;
  box-shadow:0 0 10px #2bffb0;animation:pulse 2.2s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.75);}}

/* 视图窗口 */
.viewport{
  flex:1;min-height:0;position:relative;overflow:hidden;
  overscroll-behavior:contain;
  touch-action:pan-y;
}
.track{
  display:flex;height:100%;
  will-change:transform;
  transform:translate3d(0,0,0);
  backface-visibility:hidden;
}
.view{
  flex:0 0 100%;width:100%;height:100%;
  overflow-y:auto;overflow-x:hidden;
  padding:2px 2px 26px;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
  contain:layout style;
}
.view::-webkit-scrollbar{width:6px;}
.view::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:99px;}
.view::-webkit-scrollbar-track{background:transparent;}

/* 底部标签栏 */
.tabbar{
  flex:0 0 auto;position:relative;display:flex;
  margin:10px 0 calc(10px + env(safe-area-inset-bottom,0px));
  padding:6px;border-radius:26px;
}
.tab{
  flex:1;position:relative;z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:9px 4px;border:0;background:none;
  color:rgba(255,255,255,.58);font-size:11px;font-weight:500;
  cursor:pointer;border-radius:20px;
  transition:color .3s ease, transform .25s ease;
}
.tab .ic{width:21px;height:21px;}
.tab.active{color:#fff;}
.tab:active{transform:scale(.93);}
.tab-indicator{
  position:absolute;top:6px;bottom:6px;left:6px;z-index:1;
  width:calc((100% - 12px)/4);
  border-radius:20px;
  background:linear-gradient(135deg, rgba(255,255,255,.34), rgba(255,255,255,.10));
  border:1px solid rgba(255,255,255,.38);
  box-shadow:0 4px 18px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.7);
  transition:transform .45s cubic-bezier(.22,1,.36,1);
  will-change:transform;
}

/* ============ 通用元素 ============ */
.btn{
  border:0;cursor:pointer;font-size:13.5px;font-weight:650;
  padding:12px 22px;border-radius:16px;
  transition:transform .18s cubic-bezier(.22,1,.36,1), box-shadow .25s ease, background .25s ease;
  touch-action:manipulation;
}
.btn:active{transform:scale(.955);}
.btn.primary{
  color:#0a0a14;
  background:linear-gradient(135deg,#ffffff,#c8d6ff);
  box-shadow:0 8px 26px rgba(150,175,255,.42), inset 0 1px 0 #fff;
}
.btn.ghost{
  color:#fff;background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.30);
}
.btn.ghost:hover{background:rgba(255,255,255,.18);}

/* 首页 Hero */
.hero{
  padding:26px 22px 24px;border-radius:28px;
  overflow:hidden;
}
.hero h1{
  margin:0 0 10px;font-size:clamp(24px,6.4vw,34px);
  line-height:1.18;letter-spacing:-.5px;font-weight:800;
}
.grad{
  background:linear-gradient(100deg,#a78bfa,#22d3ee 45%,#f472b6);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{margin:0 0 20px;color:var(--dim);font-size:13.5px;line-height:1.65;max-width:34em;}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;}

/* 统计 */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:14px;
}
.stat{
  padding:14px 8px;border-radius:20px;text-align:center;
}
.stat-num{font-size:20px;font-weight:800;letter-spacing:-.5px;}
.stat-lbl{font-size:10.5px;color:var(--dim);margin-top:3px;}

/* 区块标题 */
.sec-head{
  display:flex;align-items:center;justify-content:space-between;
  margin:24px 4px 12px;
}
.sec-head h2{margin:0;font-size:16px;font-weight:700;letter-spacing:.2px;}
.sec-head span{font-size:11.5px;color:var(--dim);}

/* 轮播 */
.carousel{
  display:flex;gap:13px;
  overflow-x:auto;overflow-y:hidden;
  scroll-snap-type:x mandatory;
  padding:2px 2px 14px;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
  touch-action:pan-x;
}
.carousel::-webkit-scrollbar{display:none;}
.slide{
  flex:0 0 80%;scroll-snap-align:center;
  padding:20px 18px;border-radius:24px;
  min-height:172px;
  display:flex;flex-direction:column;gap:10px;
}
.slide h3{margin:0;font-size:15px;font-weight:700;}
.slide p{margin:0;font-size:12.5px;line-height:1.6;color:var(--dim);}
.slide .ic-glass{width:44px;height:44px;border-radius:15px;}
.dots{display:flex;gap:6px;justify-content:center;margin-top:2px;}
.dots i{
  width:6px;height:6px;border-radius:99px;background:rgba(255,255,255,.26);
  transition:width .35s ease, background .35s ease;
}
.dots i.on{width:20px;background:rgba(255,255,255,.85);}

/* 筛选 chips */
.chips{display:flex;gap:8px;overflow-x:auto;padding:2px 2px 14px;scrollbar-width:none;}
.chips::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;padding:9px 17px;border-radius:99px;cursor:pointer;
  font-size:12.5px;font-weight:600;color:rgba(255,255,255,.7);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.20);
  transition:all .25s ease;
  touch-action:manipulation;
}
.chip.active{
  color:#0a0a14;
  background:linear-gradient(135deg,#fff,#cfdcff);
  border-color:transparent;
  box-shadow:0 6px 20px rgba(150,175,255,.36);
}

/* 网格 */
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(132px,1fr));
  gap:12px;
}
.card{
  position:relative;border-radius:20px;overflow:hidden;
  display:flex;flex-direction:column;
  cursor:pointer;
  background:linear-gradient(135deg, rgba(255,255,255,.15), rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.22);
  box-shadow:
    0 6px 20px rgba(0,0,0,.30),
    inset 0 1px 0 rgba(255,255,255,.42);
  transition:transform .22s cubic-bezier(.22,1,.36,1), box-shadow .25s ease, border-color .25s ease;
  contain:content;
  touch-action:manipulation;
  -webkit-user-select:none;user-select:none;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:
    0 12px 30px rgba(0,0,0,.38),
    0 0 0 1px rgba(180,200,255,.30) inset,
    inset 0 1px 0 rgba(255,255,255,.55);
}
.card:active{transform:scale(.97);}
.thumb{
  position:relative;aspect-ratio:1/1;
  background:rgba(255,255,255,.05);
  display:grid;place-items:center;overflow:hidden;
}
.thumb img,.thumb video{
  width:100%;height:100%;object-fit:cover;display:block;
  pointer-events:none;
}
.thumb .file-ic{color:rgba(255,255,255,.85);pointer-events:none;}
.thumb .file-ic .ic{width:38px;height:38px;stroke-width:1.4;}
.play-badge{
  position:absolute;inset:0;display:grid;place-items:center;
  background:rgba(0,0,0,.22);
  pointer-events:none;
}
.play-badge .ic{width:34px;height:34px;fill:rgba(255,255,255,.92);stroke:none;
  filter:drop-shadow(0 3px 10px rgba(0,0,0,.55));}
.card-body{padding:9px 11px 11px;}
.card-name{
  font-size:12px;font-weight:600;line-height:1.35;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.card-sub{font-size:10.5px;color:var(--dim);margin-top:3px;}
.card-actions{
  position:absolute;top:7px;right:7px;display:flex;gap:5px;
  opacity:0;transform:translateY(-4px);
  transition:opacity .22s ease, transform .22s ease;
  z-index:3;
}
.card:hover .card-actions,
.card:focus-within .card-actions{opacity:1;transform:none;}
@media (hover:none){.card-actions{opacity:1;transform:none;}}
.mini-btn{
  width:28px;height:28px;border-radius:10px;border:1px solid rgba(255,255,255,.35);
  background:rgba(20,20,30,.55);
  color:#fff;display:grid;place-items:center;cursor:pointer;
  transition:background .2s ease, transform .2s ease;
  touch-action:manipulation;
  padding:0;
}
.mini-btn .ic{width:14px;height:14px;pointer-events:none;}
.mini-btn:hover{background:rgba(255,255,255,.26);}
.mini-btn:active{transform:scale(.9);}
.mini-btn.danger:hover{background:rgba(255,80,110,.6);}

/* 空状态 */
.empty{
  grid-column:1/-1;padding:48px 20px;text-align:center;
  border-radius:24px;
  background:rgba(255,255,255,.05);
  border:1px dashed rgba(255,255,255,.22);
  color:var(--dim);font-size:13px;line-height:1.7;
}
.empty .ic{width:38px;height:38px;margin:0 auto 12px;stroke-width:1.3;opacity:.75;}

/* 上传区 */
.dropzone{
  padding:34px 22px;border-radius:28px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:11px;
  cursor:pointer;
  transition:transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s ease, background .25s ease;
  touch-action:manipulation;
}
.dropzone.drag{
  transform:scale(1.015);
  background:linear-gradient(135deg, rgba(140,170,255,.34), rgba(255,255,255,.10));
  box-shadow:0 0 0 2px rgba(150,180,255,.55), 0 18px 44px rgba(90,120,255,.35);
}
.dz-ic{width:64px;height:64px;border-radius:22px;}
.dz-ic .ic{width:28px;height:28px;}
.dropzone h3{margin:4px 0 0;font-size:16px;font-weight:700;}
.dropzone p{margin:0 0 6px;font-size:12.5px;color:var(--dim);line-height:1.6;}

/* 上传进度列表 */
.up-list{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:8px;}
.up-row{
  padding:11px 15px;border-radius:16px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  animation:upIn .4s cubic-bezier(.22,1,.36,1);
  contain:content;
}
@keyframes upIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}
.up-name{
  font-size:12.5px;color:rgba(255,255,255,.86);margin-bottom:8px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.up-bar{height:5px;border-radius:99px;background:rgba(255,255,255,.14);overflow:hidden;}
.up-bar i{
  display:block;height:100%;width:0;border-radius:99px;
  background:linear-gradient(90deg,#7b5cff,#22d3ee);
  transition:width .55s cubic-bezier(.4,0,.2,1), background .3s ease;
}

/* 关于卡片 */
.about-card{padding:20px 20px;border-radius:24px;margin-bottom:12px;}
.about-card h3{margin:0 0 9px;font-size:14.5px;font-weight:700;display:flex;align-items:center;gap:9px;}
.about-card h3 .ic{width:18px;height:18px;color:#a5b8ff;}
.about-card p{margin:0;font-size:12.8px;line-height:1.78;color:var(--dim);}
.about-card ul{margin:0;padding-left:18px;font-size:12.8px;line-height:1.85;color:var(--dim);}

/* 模态预览 */
.modal{
  position:fixed;inset:0;z-index:100;
  display:none;place-items:center;padding:18px;
}
.modal.open{display:grid;animation:fadeIn .22s ease;}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}
.modal-backdrop{
  position:absolute;inset:0;
  background:rgba(4,4,10,.62);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.modal-body{
  position:relative;width:min(760px,100%);
  max-height:88vh;max-height:88dvh;
  border-radius:26px;padding:14px;
  display:flex;flex-direction:column;gap:11px;
  animation:pop .34s cubic-bezier(.22,1,.36,1);
}
@keyframes pop{from{opacity:0;transform:scale(.94) translateY(14px);}to{opacity:1;transform:none;}}
.modal-close{
  position:absolute;top:-8px;right:-6px;z-index:5;
  width:38px;height:38px;border-radius:14px;cursor:pointer;
  color:#fff;padding:0;
}
.modal-close .ic{width:17px;height:17px;}
.modal-content{
  flex:1;min-height:140px;border-radius:18px;overflow:auto;
  background:rgba(0,0,0,.28);
  display:grid;place-items:center;padding:10px;
}
.modal-content img,.modal-content video{
  max-width:100%;max-height:62vh;max-height:62dvh;
  display:block;border-radius:14px;
}
.modal-info{font-size:12px;color:var(--dim);text-align:center;padding:0 6px 4px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.file-preview{text-align:center;color:var(--dim);padding:30px 16px;}
.file-preview .ic{width:52px;height:52px;margin:0 auto 14px;stroke-width:1.3;opacity:.8;}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:110px;z-index:200;
  transform:translate(-50%,16px);
  padding:12px 22px;border-radius:99px;
  font-size:13px;font-weight:600;color:#fff;
  background:rgba(30,30,48,.72);
  border:1px solid rgba(255,255,255,.28);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
  opacity:0;pointer-events:none;
  transition:opacity .3s ease, transform .35s cubic-bezier(.22,1,.36,1);
  max-width:80vw;text-align:center;
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* 小屏优化 */
@media (max-width:420px){
  .stats{grid-template-columns:repeat(2,1fr);}
  .slide{flex:0 0 86%;}
  .grid{grid-template-columns:repeat(auto-fill,minmax(112px,1fr));}
}

/* 减弱动效（无障碍 + 低端设备） */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001s !important;transition-duration:.001s !important;}
  .blob{animation:none !important;}
}