:root{--bg:#0a0e14;--bg-soft:#0f141c;--bg-elev:#141a24;--line:#1e2632;--line-soft:#161d27;--text:#d7e0ee;--text-dim:#8693a8;--text-mute:#5b6678;--phos:#34d399;--phos-soft:#34d39922;--amber:#f6c177;--red:#f87171;--blue:#7aa2f7;--shadow:0 4px 24px -8px rgba(0, 0, 0, .6);--font-mono:ui-monospace, "JetBrains Mono", "Fira Code", "SF Mono", Menlo, monospace;--font-sans:ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif}*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:14px;line-height:1.5;background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);background-size:32px 32px,32px 32px;background-position:-1px -1px;display:flex;flex-direction:column;overflow:hidden}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;border-bottom:1px solid var(--line);background:linear-gradient(to bottom,#0d121a,#0a0e14);height:52px;flex-shrink:0;z-index:5}.brand{display:flex;align-items:center;gap:10px;color:var(--phos);font-weight:600;letter-spacing:.02em}.brand svg{color:var(--phos);filter:drop-shadow(0 0 6px var(--phos-soft))}.brand-name{font-size:15px;color:var(--text)}.brand-tag{color:var(--text-mute);font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.04em}.topbar-actions{display:flex;gap:8px;align-items:center}.pill{font-family:var(--font-mono);font-size:11px;padding:4px 10px;border-radius:999px;background:var(--bg-elev);border:1px solid var(--line);color:var(--text-dim);white-space:nowrap}.pill-warn{color:var(--amber);border-color:#f6c17744}.pill-ok{color:var(--phos);border-color:var(--phos-soft)}.pill-err{color:var(--red);border-color:#f8717144}.ghost-btn{background:var(--bg-elev);color:var(--text);border:1px solid var(--line);padding:6px 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var(--line-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-item:last-child{border-bottom:none}.session-item.active{color:var(--phos)}.session-item.focused,.session-item:hover{background:var(--phos-soft)}.session-item .session-meta{color:var(--text-mute);font-size:10px;margin-left:6px}.session-empty{padding:8px;color:var(--text-mute);font-family:var(--font-mono);font-size:12px;font-style:italic}.ver-divider{width:1px;align-self:stretch;background:var(--line);margin:0 2px}.ver-label{font-family:var(--font-mono);font-size:11px;color:var(--text-mute);min-width:38px;text-align:center}.ver-label.dirty{color:var(--amber)}.splitter{background:0 0;position:relative;z-index:5;flex-shrink:0}.splitter::before{content:'';position:absolute;background:var(--line);transition:background .15s}.splitter:hover::before,.splitter.dragging::before{background:var(--phos)}.splitter-h{cursor:col-resize;width:6px}.splitter-h::before{top:18px;bottom:18px;left:2px;right:2px;border-radius:2px}.splitter-v{cursor:row-resize;height:6px}.splitter-v::before{left:24px;right:24px;top:2px;bottom:2px;border-radius:2px}body.is-resizing,body.is-resizing *{user-select:none;pointer-events:none}body.is-resizing .splitter{pointer-events:auto}body.is-resizing .iframe-wrap::after{content:'';position:absolute;inset:0}@media(max-width:960px){.splitter-h{width:auto;height:6px;cursor:row-resize}.splitter-h::before{top:2px;bottom:2px;left:24px;right:24px}}