/* === Reset & base === */
*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;min-height:100%}
body{
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  color:#1a202c;
  line-height:1.6;
  background:#eef2f8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* page wrapper */
.app{
  position:relative;
  width:100%;
  max-width:1080px;
  margin:0 auto;
  padding:24px 24px 80px;
}

/* === Top bar === */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  padding:16px 24px;
  background:#ffffff;
  border-radius:16px;
  box-shadow:0 1px 3px rgba(0,0,0,0.04),0 4px 16px rgba(0,0,0,0.06);
  margin-bottom:24px;
}

.brand{display:flex;align-items:center;gap:14px;min-width:0}
.brand .logo{
  width:44px;height:44px;
  border-radius:12px;
  background:linear-gradient(135deg,#0066ff 0%,#00a3ff 100%);
  color:#fff;font-weight:900;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
  box-shadow:0 4px 12px rgba(0,102,255,0.25);
}
.brand-text{min-width:0}
.brand-text h1{
  font-size:20px;font-weight:800;line-height:1.2;
  background:linear-gradient(135deg,#1a202c 0%,#0066ff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand-text p{font-size:12px;color:#5a6a85;margin-top:2px}

.tabs{
  display:inline-flex;gap:4px;
  background:#f1f4f9;
  border-radius:10px;padding:4px;
  flex-shrink:0;
}
.tab{
  border:none;background:transparent;
  padding:8px 18px;border-radius:8px;
  font-size:14px;font-weight:600;color:#5a6a85;
  cursor:pointer;transition:all .2s ease;
  font-family:inherit;
  white-space:nowrap;
}
.tab:hover{color:#1a202c}
.tab.active{background:#fff;color:#0066ff;box-shadow:0 1px 3px rgba(0,0,0,0.08)}

/* === Panel === */
.panel{display:none}
.panel.active{display:block}

@keyframes fadeIn{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:translateY(0)}
}
.panel.active{animation:fadeIn .35s ease}

/* === Drop zone === */
.drop{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  text-align:center;
  border:2px dashed rgba(0,102,255,0.35);
  border-radius:16px;
  background:#ffffff;
  padding:60px 32px;
  cursor:pointer;
  transition:all .25s ease;
  min-height:240px;
  width:100%;
}
.drop:hover,
.drop.drag{
  border-color:#0066ff;
  background:#f5f9ff;
  box-shadow:0 8px 24px rgba(0,102,255,0.12);
}
.drop-content{width:100%;max-width:560px}
.drop .ic{font-size:48px;display:block;margin-bottom:14px;line-height:1}
.drop h3{font-size:17px;font-weight:700;margin-bottom:8px;color:#1a202c}
.drop p{font-size:13px;color:#5a6a85;line-height:1.6}
.drop input{display:none}

/* === File list === */
.filelist{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.fitem{
  display:flex;align-items:center;gap:14px;
  background:#ffffff;
  border:1px solid #e8edf5;
  border-radius:12px;
  padding:12px 16px;
  transition:all .2s ease;
}
.fitem:hover{border-color:#0066ff;box-shadow:0 2px 8px rgba(0,102,255,0.08)}
.fic{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,#e8f0ff,#f0f7ff);
  color:#0066ff;font-weight:800;font-size:12px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.fn{
  flex:1 1 auto;min-width:0;
  font-size:14px;font-weight:500;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:#1a202c;
}
.fs{
  color:#5a6a85;font-size:13px;flex-shrink:0;
  font-variant-numeric:tabular-nums;
}
.fdel{
  cursor:pointer;background:#fef2f2;border:none;
  color:#ef4444;font-size:14px;
  padding:6px 10px;border-radius:8px;
  transition:all .2s ease;line-height:1;flex-shrink:0;
}
.fdel:hover{background:#ef4444;color:#fff}

/* === Actions === */
.actions{
  margin-top:20px;
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;
  border:none;border-radius:10px;
  font-size:14px;font-weight:700;
  cursor:pointer;transition:all .25s ease;
  font-family:inherit;line-height:1.4;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#0066ff,#00a3ff);
  color:#fff;
  box-shadow:0 4px 14px rgba(0,102,255,0.25);
}
.btn-primary:hover:not(:disabled){
  transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(0,102,255,0.32);
}
.btn-primary:active:not(:disabled){transform:translateY(0)}
.btn-primary:disabled{background:#c5cad3;box-shadow:none;cursor:not-allowed;color:#fff}
.hint{font-size:13px;color:#5a6a85}

/* === Progress === */
.progress{
  margin-top:18px;display:none;
  background:#fff;border:1px solid #e8edf5;
  border-radius:12px;padding:18px;
}
.progress.show{display:block}
.pbar{height:8px;background:#eef2f8;border-radius:4px;overflow:hidden;position:relative}
.pfill{
  height:100%;width:0;
  background:linear-gradient(90deg,#0066ff,#00a3ff,#ff7a00);
  background-size:200% 100%;
  transition:width .4s ease;
  animation:shimmer 1.6s linear infinite;
  border-radius:4px;
}
.pct{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  font-size:12px;font-weight:800;color:#1a202c;
  background:rgba(255,255,255,.85);padding:2px 8px;border-radius:4px;
  box-shadow:0 1px 4px rgba(0,0,0,.1);
  z-index:1;
}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.ptext{color:#5a6a85;font-size:13px;margin-top:10px;display:flex;align-items:center;justify-content:space-between;gap:10px}
.ptext b{color:#1a202c;font-weight:600}
.ptime{
  font-variant-numeric:tabular-nums;font-weight:700;font-size:13px;
  color:#0066ff;background:#eef4ff;padding:2px 10px;border-radius:6px;
  flex-shrink:0;
}

/* === Records === */
.empty-state{
  text-align:center;padding:64px 24px;
  background:#fff;border:1px dashed #d8dee8;
  border-radius:16px;color:#5a6a85;
}
.empty-state .ic{font-size:48px;opacity:.4;display:block;margin-bottom:12px}
.empty-state p{font-size:14px;line-height:1.6}
.empty-state p + p{font-size:12px;margin-top:4px}

.rec-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:20px;
}
.rec{
  position:relative;
  background:linear-gradient(160deg, #ffffff 0%, #f6f9ff 100%);
  border:1px solid #e2e8f4;
  border-radius:18px;overflow:hidden;
  cursor:pointer;
  transition:all .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  text-decoration:none;
  isolation:isolate;
}
.rec::before{
  content:'';position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(400px 200px at -10% -50%, var(--tag) 0%, transparent 60%);
  opacity:.08;pointer-events:none;transition:opacity .3s;
}
.rec:hover{
  transform:translateY(-5px);
  box-shadow:
    0 14px 34px rgba(20,40,90,.10),
    0 2px 6px rgba(0,0,0,.04),
    0 0 0 1px color-mix(in srgb, var(--tag) 18%, transparent) inset;
  border-color:color-mix(in srgb, var(--tag) 35%, #e2e8f4);
}
.rec:hover::before{opacity:.14}
.rec-bar{
  height:5px;
  background:linear-gradient(90deg,
    var(--tag) 0%,
    color-mix(in srgb, var(--tag) 60%, #fff) 55%,
    var(--tag) 100%);
  position:relative;
}
.rec-bar::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  animation:bar-shine 3.2s ease-in-out infinite;
}
@keyframes bar-shine{0%,100%{transform:translateX(-100%)}50%{transform:translateX(100%)}}
.rec-body{padding:20px 22px;display:flex;flex-direction:column;flex:1;min-width:0}
.rec-head{display:flex;align-items:center;gap:10px;margin-bottom:10px;min-width:0}
.rec-title{
  font-size:17px;font-weight:800;letter-spacing:.1px;
  flex:1;min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:#1a202c;transition:color .2s;
}
.rec:hover .rec-title{color:var(--tag)}
.rec .rec-title,.rec .rec-sub,.rec .rec-time,.rec .rec-open,.rec .rec-del,.rec .rec-src{text-decoration:none !important}
.rec-tag{
  width:14px;height:14px;border-radius:4px;
  background:linear-gradient(135deg,var(--tag),color-mix(in srgb,var(--tag)60%,#fff));
  flex-shrink:0;
  box-shadow:0 2px 8px color-mix(in srgb,var(--tag)40%,transparent);
}
.rec-sub{
  color:#4a5672;font-size:13px;line-height:1.65;
  margin-bottom:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;
  min-height:calc(1.65em * 2);
}
.rec-meta{
  display:grid;grid-template-columns:repeat(3,1fr);gap:6px;
  padding:11px 12px;
  background:linear-gradient(135deg,
    color-mix(in srgb,var(--tag)8%,#f7faff) 0%,
    #ffffff 100%);
  border:1px solid color-mix(in srgb,var(--tag)15%,#e7ecf5);
  border-radius:10px;
  color:#5a6a85;font-size:12px;
  margin-bottom:14px;
}
.rec-meta > span{
  text-align:center;display:flex;flex-direction:column;align-items:center;gap:2px;
}
.rec-meta b{
  color:#1a202c;font-weight:800;font-variant-numeric:tabular-nums;font-size:15px;
  display:block;
}
.rec-meta > span::after{
  content:attr(data-label);color:#7b87a3;font-size:11px;font-weight:500;
}
.rec-src{
  font-size:12px;color:#6b7894;
  border-top:1px solid #eef2f8;
  padding-top:10px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  display:flex;align-items:center;gap:6px;min-width:0;
}
.rec-src::before{content:'📎';font-size:12px;opacity:.8}
.rec-foot{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:auto;padding-top:14px;gap:8px;
}
.rec-time{
  color:#8b95a7;font-size:12px;font-variant-numeric:tabular-nums;
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:8px;background:#f3f5fa;
}
.rec-time::before{content:'🕒';font-size:11px;opacity:.85}
.rec-del{
  background:#fff2f0;border:1px solid #ffe0da;color:#e45039;
  cursor:pointer;padding:6px 12px;border-radius:9px;
  font-weight:700;font-size:12px;transition:all .2s;
  font-family:inherit;line-height:1.3;
}
.rec-del:hover{background:#e45039;color:#fff;border-color:#e45039;
  box-shadow:0 4px 12px rgba(228,80,57,.22)}

.rec-open{
  color:#fff;font-weight:700;font-size:13px;
  display:inline-flex;align-items:center;gap:5px;
  transition:all .2s;cursor:pointer;
  padding:7px 14px;border-radius:10px;
  background:linear-gradient(135deg,var(--tag),color-mix(in srgb,var(--tag)70%,#5a9bff));
  box-shadow:0 4px 12px color-mix(in srgb,var(--tag)30%,transparent);
}
.rec-open:hover{
  filter:brightness(1.06);
  transform:translateY(-1px);
  box-shadow:0 6px 18px color-mix(in srgb,var(--tag)40%,transparent);
}

/* === Toast === */
.toast{
  position:fixed;
  bottom:24px;left:50%;
  transform:translateX(-50%) translateY(20px);
  background:#1a202c;color:#fff;
  padding:12px 24px;border-radius:10px;
  font-size:14px;font-weight:500;
  opacity:0;pointer-events:none;
  transition:.3s ease;z-index:99;
  box-shadow:0 8px 24px rgba(0,0,0,0.2);
  max-width:90vw;text-align:center;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:#ef4444}
.toast.ok{background:#10b981}

/* === Background decoration (optional, no fixed) === */
body::before{
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:600px;
  background:
    radial-gradient(ellipse 60% 50% at 20% 0%, rgba(0,102,255,0.10) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 100% 10%, rgba(255,122,0,0.06) 0%, transparent 70%);
  pointer-events:none;
  z-index:-1;
}

/* === Responsive === */
@media (max-width:900px){
  .topbar{padding:14px 18px;gap:12px}
  .brand{flex:1;min-width:0}
  .brand-text h1{font-size:18px}
  .brand-text p{font-size:11px}
  .tab{padding:7px 14px;font-size:13px}
  .drop{padding:48px 20px;min-height:200px}
  .drop .ic{font-size:42px}
  .drop h3{font-size:16px}
  .drop p{font-size:12px}
}

@media (max-width:600px){
  .app{padding:16px 14px 60px}
  .topbar{
    flex-direction:column;align-items:stretch;
    padding:14px;border-radius:14px;gap:10px;
  }
  .brand{justify-content:flex-start}
  .tabs{justify-content:space-between;width:100%}
  .tab{
    flex:1;text-align:center;
    padding:9px 8px;font-size:13px;
  }
  .drop{padding:36px 16px;min-height:180px;border-radius:14px}
  .drop .ic{font-size:36px;margin-bottom:10px}
  .drop h3{font-size:15px}
  .drop p{font-size:12px;line-height:1.5}
  .fitem{padding:10px 12px;gap:10px}
  .fs{display:none}
  .actions{flex-direction:column;align-items:stretch;gap:10px}
  .btn{width:100%;justify-content:center;padding:13px 20px;font-size:14px}
  .hint{text-align:center}
  .rec-grid{grid-template-columns:1fr;gap:14px}
  .rec-body{padding:16px}
  .rec-title{font-size:15px}
}