:root{
  --bg:#0e1016;
  --bg2:#141824;
  --card:#1a1f2e;
  --line:rgba(255,255,255,.08);
  --txt:#e8ecf5;
  --dim:#8b93a7;
  --accent:#8ab4ff;
  --accent2:#c4a0ff;
  --ok:#5fd6a4;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  background:radial-gradient(1200px 700px at 15% -10%, #1b2340 0%, transparent 55%),
             radial-gradient(900px 600px at 100% 0%, #2a1d3d 0%, transparent 50%),
             linear-gradient(180deg,var(--bg) 0%, var(--bg2) 100%);
  color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",
              "Hiragino Sans GB","Microsoft YaHei",sans-serif;
  min-height:100vh;
  padding-bottom:70px;
}
.bg-glow{
  position:fixed;inset:0;pointer-events:none;z-index:0;
  background:radial-gradient(600px 400px at 50% 0%, rgba(138,180,255,.07), transparent 70%);
}
.site-header{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 32px;
  backdrop-filter:blur(14px);
  background:rgba(14,16,22,.6);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:baseline;gap:12px}
.logo{
  font-size:22px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand h1{
  font-size:22px;font-weight:700;letter-spacing:.5px;
  background:linear-gradient(135deg,#fff,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.brand .sub{font-size:12.5px;color:var(--dim)}

.btn{
  display:inline-block;padding:9px 18px;border-radius:10px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  color:#0b0d12;font-weight:600;font-size:14px;
  text-decoration:none;border:none;cursor:pointer;
  transition:transform .16s ease, box-shadow .16s ease, opacity .16s;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(138,180,255,.28)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.btn.ghost{
  background:rgba(255,255,255,.06);color:var(--txt);
  border:1px solid var(--line);font-weight:500;
}
.btn.ghost:hover{background:rgba(255,255,255,.12);box-shadow:none}
.btn.primary{padding:12px 26px;font-size:15px}

main{position:relative;z-index:1;max-width:1500px;margin:0 auto;padding:34px 30px}

/* ---------- 瀑布流 ---------- */
.gallery{
  column-count:5;column-gap:16px;
}
@media(max-width:1400px){.gallery{column-count:4}}
@media(max-width:1050px){.gallery{column-count:3}}
@media(max-width:720px){.gallery{column-count:2;column-gap:10px}}
@media(max-width:460px){.gallery{column-count:1}}

.card{
  break-inside:avoid;margin-bottom:16px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:14px;overflow:hidden;
  cursor:zoom-in;
  transition:transform .22s cubic-bezier(.2,.8,.3,1), box-shadow .22s, border-color .22s;
}
.card:hover{
  transform:translateY(-4px);
  border-color:rgba(138,180,255,.4);
  box-shadow:0 18px 40px rgba(0,0,0,.45), 0 0 0 1px rgba(138,180,255,.12);
}
.thumb-wrap{position:relative;overflow:hidden;background:#12151d}
.thumb-wrap img{display:block;width:100%;height:auto;transition:transform .35s ease}
.card:hover .thumb-wrap img{transform:scale(1.04)}
figcaption{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;font-size:13px;
}
.card .title{
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:var(--txt);font-weight:500;
}
.card .meta{color:var(--dim);font-size:11.5px;flex-shrink:0}

/* ---------- 空状态 ---------- */
.empty{
  text-align:center;padding:120px 20px;color:var(--dim);
}
.empty-icon{font-size:56px;margin-bottom:18px;opacity:.5}
.empty p{font-size:16px;margin-bottom:22px}

/* ---------- 上传页 ---------- */
.upload-main{max-width:820px}
.panel{
  background:rgba(26,31,46,.72);
  border:1px solid var(--line);
  border-radius:18px;padding:28px;
  backdrop-filter:blur(10px);
}
.field{display:block;margin-bottom:22px}
.field span{display:block;font-size:13px;color:var(--dim);margin-bottom:8px}
.field input{
  width:100%;padding:12px 15px;border-radius:11px;
  background:rgba(0,0,0,.35);border:1px solid var(--line);
  color:var(--txt);font-size:15px;outline:none;
  transition:border-color .18s, box-shadow .18s;
}
.field input:focus{
  border-color:rgba(138,180,255,.6);
  box-shadow:0 0 0 3px rgba(138,180,255,.12);
}
.dropzone{
  border:2px dashed rgba(255,255,255,.16);
  border-radius:16px;padding:44px 20px;text-align:center;
  cursor:pointer;transition:.2s;
  background:rgba(255,255,255,.02);
}
.dropzone:hover,.dropzone.over{
  border-color:var(--accent);
  background:rgba(138,180,255,.07);
}
.dz-icon{
  font-size:34px;margin-bottom:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.dropzone p{font-size:14.5px;color:var(--txt)}
.dropzone .hint{font-size:12.5px;color:var(--dim);margin-top:7px}

.preview{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));
  gap:10px;margin-top:20px;
}
.pv-item{
  position:relative;aspect-ratio:1;border-radius:10px;overflow:hidden;
  border:1px solid var(--line);background:#12151d;
}
.pv-item img{width:100%;height:100%;object-fit:cover}
.pv-del{
  position:absolute;top:4px;right:4px;
  width:22px;height:22px;border-radius:50%;
  background:rgba(0,0,0,.7);color:#fff;border:none;
  cursor:pointer;font-size:12px;line-height:1;
}
.pv-del:hover{background:#e05555}

.actions{display:flex;align-items:center;gap:16px;margin-top:24px}
.status{font-size:13.5px;color:var(--dim)}

/* ---------- 大图 ---------- */
.lightbox{
  position:fixed;inset:0;z-index:99;
  background:rgba(6,8,12,.94);
  display:flex;align-items:center;justify-content:center;
  padding:40px;backdrop-filter:blur(6px);
  animation:fade .2s ease;
}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lightbox img{
  max-width:100%;max-height:100%;
  border-radius:8px;box-shadow:0 30px 80px rgba(0,0,0,.7);
}
.lb-close{
  position:absolute;top:22px;right:26px;
  width:42px;height:42px;border-radius:50%;
  background:rgba(255,255,255,.1);color:#fff;border:none;
  font-size:18px;cursor:pointer;transition:.18s;
}
.lb-close:hover{background:rgba(255,255,255,.22)}

footer{
  position:fixed;bottom:0;left:0;right:0;z-index:10;
  text-align:center;padding:14px;font-size:12px;color:var(--dim);
  background:linear-gradient(180deg,transparent,rgba(14,16,22,.9));
}