:root{color-scheme:light dark;--bg:#f6f7f9;--card:#fff;--fg:#14171c;--mut:#667085;--bd:#e3e6ea;--ac:#2563eb;--acf:#fff;--dan:#dc2626;--pin:#f59e0b}
@media (prefers-color-scheme:dark){:root{--bg:#0f1115;--card:#171a21;--fg:#e8eaed;--mut:#9aa3af;--bd:#2a2f38;--ac:#3b82f6;--dan:#ef4444}}
*{box-sizing:border-box}
body{margin:0;font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg)}
header{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--bd);padding:10px 16px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
header h1{font-size:17px;margin:0 8px 0 0}
header input{flex:1;min-width:140px}
main{max-width:900px;margin:0 auto;padding:16px}
input,textarea,select,button{font:inherit;color:inherit;background:var(--card);border:1px solid var(--bd);border-radius:8px;padding:8px 10px}
textarea{width:100%;min-height:96px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
button{cursor:pointer}
button.pri{background:var(--ac);color:var(--acf);border-color:var(--ac)}
button.dan{color:var(--dan)}
button:hover{filter:brightness(1.08)}
.box{background:var(--card);border:1px solid var(--bd);border-radius:12px;padding:12px;margin-bottom:16px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:8px}
.grow{flex:1}
.hint{color:var(--mut);font-size:12.5px}
.drop{outline:3px dashed var(--ac);outline-offset:-6px}
.item{background:var(--card);border:1px solid var(--bd);border-radius:12px;padding:10px 12px;margin-bottom:10px}
.item.pinned{border-color:var(--pin)}
.meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--mut);font-size:12.5px;align-items:center}
.meta .sp{flex:1}
.item pre{margin:8px 0 0;white-space:pre-wrap;word-break:break-word;max-height:260px;overflow:auto;font:13px/1.4 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.item img{display:block;max-width:100%;max-height:240px;margin-top:8px;border-radius:8px;cursor:zoom-in}
.acts{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.acts button{padding:5px 10px;font-size:13px}
.fname{font-weight:600;margin-top:6px;word-break:break-all}
#toasts{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:6px;z-index:9}
.toast{background:#111;color:#fff;padding:8px 14px;border-radius:8px;font-size:14px;box-shadow:0 4px 14px #0004}
.toast.err{background:var(--dan)}
.empty{text-align:center;color:var(--mut);padding:30px}
.login{max-width:360px;margin:12vh auto;padding:24px}
.login input{width:100%;margin:12px 0}
.login button{width:100%}
.err{color:var(--dan)}