/* Order Book — compact Polymarket style */
.ob-container{margin-bottom:12px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden}
.ob-head{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-bottom:1px solid var(--border)}
.ob-title{font-size:11px;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.3px}
.ob-sp{font-size:10px;color:var(--text-muted);font-family:'JetBrains Mono',monospace}
.ob-cols{display:grid;grid-template-columns:1fr 1fr 1fr;padding:3px 10px;font-size:9px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.4px}
.ob-cols span:nth-child(2){text-align:center}
.ob-cols span:last-child{text-align:right}
.ob-r{display:grid;grid-template-columns:1fr 1fr 1fr;padding:3px 10px;font-size:11px;font-family:'JetBrains Mono',monospace;position:relative;cursor:pointer;line-height:18px}
.ob-r:active{background:rgba(255,255,255,0.05)}
.ob-r span{position:relative;z-index:1}
.ob-s{text-align:center;color:var(--text-secondary)}
.ob-t{text-align:right;color:var(--text-muted)}
.ob-p.bid{color:var(--accent-green)}
.ob-p.ask{color:var(--accent-red)}
.ob-bar{position:absolute;top:0;right:0;bottom:0;z-index:0;opacity:.1}
.ob-bar.bid{background:var(--accent-green)}
.ob-bar.ask{background:var(--accent-red)}
.ob-mid{padding:4px 10px;text-align:center;font-family:'JetBrains Mono',monospace;font-size:13px;font-weight:700;color:var(--text-primary);background:var(--bg-input);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.ob-loading{padding:20px;text-align:center;font-size:20px;opacity:0.5;animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:0.3}50%{opacity:0.7}}
.ob-empty{padding:24px;text-align:center;font-size:13px;color:var(--text-muted);font-style:italic}
.ob-empty-side{padding:8px 10px;text-align:center;font-size:11px;color:var(--text-muted);opacity:0.6}