:root{--font-sans:'Inter',-apple-system,sans-serif;--radius:12px;--transition:0.2s ease}
[data-theme="dark"]{--bg:#0F0F1A;--bg-card:rgba(26,26,46,0.95);--bg-input:rgba(99,102,241,0.05);--border:rgba(99,102,241,0.1);--text:#E8E4F0;--text2:#A0A0C0;--text3:#6060A0;--primary:#6366F1;--gradient:linear-gradient(135deg,#6366F1,#8B5CF6)}
*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh}
.app{max-width:960px;margin:0 auto}.header{padding:14px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}
.header h1{font-size:1rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.btn{font-family:var(--font-sans);font-size:.78rem;font-weight:500;padding:6px 12px;border-radius:6px;border:none;cursor:pointer;transition:all var(--transition)}
.btn-ghost{background:transparent;color:var(--text2)}.btn-ghost:hover{background:var(--bg-input)}
.btn-sm{font-size:.72rem;padding:4px 8px}
.board{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;padding:20px}
.column{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column}
.col-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.col-header h2{font-size:.82rem;font-weight:600}
.count{font-size:.72rem;background:var(--bg-input);border-radius:10px;padding:2px 8px;color:var(--text3);font-weight:600}
.col-cards{flex:1;display:flex;flex-direction:column;gap:6px;min-height:100px}
.card{background:var(--bg-input);border:1px solid var(--border);border-radius:8px;padding:10px;font-size:.8rem;cursor:grab;transition:all var(--transition);display:flex;justify-content:space-between;align-items:flex-start}
.card:active{cursor:grabbing;opacity:.8}.card.dragging{opacity:.4}
.card .del{background:none;border:none;color:var(--text3);cursor:pointer;font-size:.72rem;flex-shrink:0}.del:hover{color:#EF4444}
.col-cards.drag-over{background:rgba(99,102,241,0.05);border-radius:8px}
.add-row{display:flex;gap:4px;margin-top:8px}
.add-row input{flex:1;padding:6px 8px;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:6px;font-size:.78rem;outline:none;font-family:var(--font-sans)}
@media(max-width:600px){.board{grid-template-columns:1fr}}