:root{
  --bg:#0f1720;
  --card:#0b1220;
  --accent:#2b7cff;
  --text:#e6eef8;
  --muted:#9fb1d8;
  --surface:#0b1220;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;background:var(--bg);color:var(--text)}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:rgba(255,255,255,0.05);backdrop-filter:blur(6px)}
.actions .btn{margin-left:8px}
.main{display:flex;height:calc(100vh - 64px)}
.sidebar{width:340px;border-right:1px solid rgba(255,255,255,0.03);padding:12px;background:var(--surface);overflow:auto}
.editor{flex:1;padding:16px;display:flex;flex-direction:column;gap:8px;overflow:auto}
.editor-toolbar{display:flex;gap:8px;flex-wrap:wrap}
.btn{padding:8px 10px;border-radius:10px;border:1px solid rgba(255,255,255,0.1);background:transparent;color:var(--text)}
#noteTitle{padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.1);font-weight:700;background:transparent;color:var(--text)}
.note-body{min-height:300px;padding:14px;border-radius:12px;border:1px solid rgba(255,255,255,0.1);background:var(--card);overflow:auto;color:var(--text)}
.notes-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.note-item{padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,0.1);background:rgba(255,255,255,0.02);display:flex;justify-content:space-between;align-items:center;cursor:pointer}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .25s ease}
.modal.show{opacity:1;pointer-events:auto}
.modal-content{background:var(--card);padding:18px;border-radius:12px;width:320px;color:var(--text)}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--accent);color:white;padding:10px 16px;border-radius:10px;opacity:0;transition:opacity .4s ease}
.toast.show{opacity:1}
.hidden{display:none}
.images-container{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.images-container img{max-width:140px;border-radius:10px;object-fit:cover;border:1px solid rgba(255,255,255,0.1)}
@media (max-width:700px){.sidebar{width:45%}}