:root{--bg: #f6f7f9;--surface: #ffffff;--surface-2: #f0f2f5;--border: #d9dde3;--text: #1c2330;--muted: #5f6b7a;--accent: #0f6cbd;--region: #5b5fc7;--hub: #0f6cbd;--spoke: #2e8b57;--platform: #8764b8;--subnet: #4f8fd6;--special: #c4651c;--error: #c50f1f;--error-bg: #fde7e9;--warning: #8a5a00;--warning-bg: #fff4ce;--ok: #107c10;color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #14171c;--surface: #1c2027;--surface-2: #252a33;--border: #353b46;--text: #e6e9ee;--muted: #9aa4b2;--accent: #4ea1ff;--region: #8b8ff0;--hub: #3b8de0;--spoke: #3fae6f;--platform: #a586d6;--subnet: #5e9ee6;--special: #e08a45;--error: #ff8a95;--error-bg: #3d1a1e;--warning: #f2c94c;--warning-bg: #3a3017;--ok: #6ccb5f;color-scheme:dark}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.4 Segoe UI,system-ui,-apple-system,sans-serif}input,select,button{font:inherit;color:inherit;background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:4px 6px}input:focus,select:focus,button:focus-visible{outline:2px solid var(--accent);outline-offset:-1px}button{cursor:pointer}button:hover{background:var(--surface-2)}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover{background:var(--accent);filter:brightness(1.1)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10;display:flex;align-items:center;justify-content:center;padding:24px 16px;background:#00000073}.dialog{display:flex;flex-direction:column;width:min(1000px,100%);max-height:100%;padding:16px 20px;border-radius:10px;background:var(--surface);border:1px solid var(--border);box-shadow:0 12px 40px #0000004d}.dialog h2{margin:0 auto 0 0;font-size:16px}.dialog p{margin:8px 0 0}.dialog .naming{margin-top:10px}.dialog .naming input{width:90px}.save-chip{cursor:pointer;white-space:nowrap}.save-chip.saved{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,var(--border))}.save-chip.unsaved{color:var(--warning);border-color:color-mix(in srgb,var(--warning) 40%,var(--border))}.current-design{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface-2)}.save-state{margin-left:10px;font-size:12px}.save-state.saved{color:var(--ok)}.save-state.unsaved{color:var(--warning)}.design-list{margin-top:12px;overflow:auto;min-height:120px}.design-list table{margin:0}.design-list td{vertical-align:middle}.design-list tr.selected td{background:color-mix(in srgb,var(--accent) 10%,var(--surface))}.design-name{width:240px;font-weight:600;margin-right:6px}.design-list .actions{white-space:nowrap;text-align:right}.design-list .actions button{margin-left:4px;font-size:12px;padding:2px 8px}.design-list .empty{padding:16px;margin:0}button.danger:hover{color:var(--error);border-color:var(--error)}.issues li.ok{color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--surface))}.file-tabs{display:flex;flex-wrap:wrap;gap:4px;margin-top:12px;border-bottom:1px solid var(--border)}.file-tabs button{display:inline-flex;align-items:baseline;gap:8px;border:none;border-bottom:2px solid transparent;border-radius:4px 4px 0 0;background:transparent;font-family:Cascadia Code,Consolas,monospace;font-size:13px}.file-tabs button.active{border-bottom-color:var(--accent);background:var(--surface-2)}.file-tabs .muted{font-family:Segoe UI,system-ui,sans-serif;font-size:11px}.dialog .code{margin-top:0;border-top-left-radius:0}.code{flex:1;min-height:200px;overflow:auto;margin:12px 0 0;padding:12px;border-radius:6px;border:1px solid var(--border);background:var(--bg);font:12.5px/1.5 Cascadia Code,Consolas,monospace;white-space:pre}.dialog .footer{justify-content:flex-end}button.icon{border:none;background:transparent;color:var(--muted);padding:2px 6px}button.icon:hover{color:var(--error)}select:disabled{opacity:.5}code{font-family:Cascadia Code,Consolas,monospace;font-size:13px}.row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}label{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:12px}.muted{color:var(--muted);font-size:12px}.app{max-width:1200px;margin:0 auto;padding:0 16px 48px}.topbar{position:sticky;top:0;z-index:2;background:var(--bg);padding:12px 0 8px;border-bottom:1px solid var(--border);margin-bottom:16px}.plan-name{font-size:18px;font-weight:600;border-color:transparent;background:transparent;min-width:0;flex:1 1 220px}.root{width:140px;font-family:Cascadia Code,Consolas,monospace}.tabs{display:inline-flex}.tabs button{border-radius:0}.tabs button:first-child{border-radius:4px 0 0 4px}.tabs button:last-child{border-radius:0 4px 4px 0;border-left:none}.tabs button.active{background:var(--accent);border-color:var(--accent);color:#fff}.status{font-size:12px;font-weight:600}.status.ok{color:var(--ok)}.status.warning{color:var(--warning)}.status.error{color:var(--error)}.swatch{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--region-color, var(--region));flex:none}.region-tabs{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.region-tabs button{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:6px;border-bottom:3px solid transparent}.region-tabs button.active{border-color:var(--region-color, var(--accent));background:color-mix(in srgb,var(--region-color, var(--accent)) 14%,var(--surface))}.region-tabs .tab-name{font-weight:600}.region-tabs code{color:var(--muted);font-size:12px}.region-tabs .all{color:var(--muted)}.region-tabs .add{color:var(--accent);border-style:dashed}.tab-issues{min-width:18px;padding:0 5px;border-radius:9px;font-size:11px;font-weight:600;color:#fff}.tab-issues.error{background:var(--error)}.tab-issues.warning{background:var(--warning)}.region{--region-color: var(--region);background:var(--surface);border:1px solid var(--border);border-top:6px solid var(--region-color);border-radius:8px;padding:0 16px 12px;margin-bottom:40px;box-shadow:0 1px 3px #00000014}.region-banner{margin:0 -16px 8px;padding:10px 16px;display:grid;gap:8px;background:color-mix(in srgb,var(--region-color) 10%,var(--surface));border-bottom:1px solid color-mix(in srgb,var(--region-color) 35%,var(--border))}.region-banner .swatch{width:14px;height:14px}.region-cidr{display:inline-flex;align-items:center;gap:4px}.region-cidr input{width:150px;font:600 15px Cascadia Code,Consolas,monospace;color:#fff;background:var(--region-color);border-color:transparent}.region-cidr input::placeholder{color:#ffffffb3}.region-cidr input.pinned{border-style:dashed;border-color:#fff}.chip{padding:1px 8px;border-radius:10px;font-size:11px;border:1px solid var(--border);background:var(--surface);color:var(--muted)}button.chip:hover{color:var(--error);border-color:var(--error)}.region-meta{color:var(--muted);font-size:12px;margin-right:auto}.overview{margin-bottom:20px}.overview h2{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:0 0 6px}.overview tr td:first-child{border-left:4px solid var(--region-color)}.overview tr.selected td{background:color-mix(in srgb,var(--region-color) 10%,var(--surface))}button.link{display:inline-flex;align-items:center;gap:8px;border:none;background:none;padding:0;color:var(--accent);font-weight:600}button.link:hover{background:none;text-decoration:underline}.region-name{font-size:18px;font-weight:700;width:200px;background:transparent;border-color:transparent}.region-name:hover{border-color:var(--border)}.vnet{border:1px solid var(--border);border-left:4px solid var(--spoke);border-radius:6px;padding:10px 12px;margin-top:12px;background:var(--surface)}.vnet-hub,.vnet-virtual-hub{border-left-color:var(--hub)}.vnet-platform{border-left-color:var(--platform)}.kind{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);min-width:108px}.vnet .name{width:220px}.pin{width:130px;font-family:Cascadia Code,Consolas,monospace;font-size:13px}.cidr{padding:2px 6px;border-radius:4px;background:var(--surface-2)}.cidr.unallocated{color:var(--error)}.note{color:var(--muted);font-size:12px;margin:8px 0 0}.footer{margin-top:8px}.add{color:var(--accent)}.add-region{width:100%;padding:10px;border-style:dashed;color:var(--accent)}.issues{list-style:none;padding:0;margin:6px 0 0;font-size:12px}.issues li{padding:2px 8px;border-radius:4px;margin-top:2px}.issues li.error{color:var(--error);background:var(--error-bg)}.issues li.warning{color:var(--warning);background:var(--warning-bg)}.bar-wrap{margin-top:10px}.bar{position:relative;height:26px;border-radius:4px;border:1px solid var(--border);overflow:hidden;background:repeating-linear-gradient(45deg,var(--surface-2),var(--surface-2) 6px,var(--surface) 6px,var(--surface) 12px)}.seg{position:absolute;top:0;bottom:0;border-right:1px solid var(--surface);color:#fff;font-size:11px;display:flex;align-items:center;overflow:hidden;min-width:2px}.seg span{padding:0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.seg-region{background:var(--region)}.seg-hub{background:var(--hub)}.seg-platform{background:var(--platform)}.seg-spoke{background:var(--spoke)}.seg-subnet{background:var(--subnet)}.seg-special{background:var(--special)}.bar-caption{margin-top:4px;color:var(--muted);font-size:12px}.tabs.mode{margin-top:10px}.tabs.mode button{font-size:12px;padding:2px 12px}.visual .table-scroll{margin-top:8px;padding:0}table.vsc{margin:0}table.vsc td{vertical-align:middle}table.vsc .name{width:100%;min-width:200px}.leaf-name .row{flex-wrap:nowrap;gap:2px}tr.leaf>td:first-child{border-left:4px solid transparent}tr.leaf-subnet>td:first-child{border-left-color:var(--subnet)}tr.leaf-special>td:first-child{border-left-color:var(--special)}tr.leaf-free>td:not(.join):not(.join-fill){background:repeating-linear-gradient(45deg,transparent,transparent 6px,var(--surface-2) 6px,var(--surface-2) 12px)}tr.leaf-free .name{background:transparent;border-style:dashed}button.divide{font-size:12px;padding:2px 8px}button:disabled{opacity:.4;cursor:not-allowed}.join-head{text-align:center}td.join,td.join-fill{padding:0;width:34px;min-width:34px;border-bottom:none}td.join{position:relative}td.join button{position:absolute;top:1px;right:1px;bottom:1px;left:1px;border:none;border-radius:3px;padding:0;font-size:10px;color:#fff;background:var(--depth)}td.join button:not(:disabled):hover{filter:brightness(1.15)}td.join.depth-0{--depth: #5b5fc7}td.join.depth-1{--depth: #0f6cbd}td.join.depth-2{--depth: #038387}td.join.depth-3{--depth: #2e8b57}td.join.depth-4{--depth: #8a6d00}td.join.depth-5{--depth: #c4651c}.unplaced{margin-top:8px;font-size:12px}table{width:100%;border-collapse:collapse;margin-top:8px}th{text-align:left;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:4px 6px;border-bottom:1px solid var(--border)}td{padding:4px 6px;border-bottom:1px solid var(--surface-2);vertical-align:top}.num{text-align:right;font-variant-numeric:tabular-nums}.subnets .name{width:100%;min-width:180px}.subnets tr.has-error .name{border-color:var(--error)}.table-scroll{overflow-x:auto;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:4px 8px}.summary tr td:first-child{border-left:4px solid var(--region-color)}.summary tr.level-region td{font-weight:600;background:color-mix(in srgb,var(--region-color) 14%,var(--surface));border-top:12px solid var(--surface)}.summary tr.level-vnet td:first-child{padding-left:20px;font-weight:600}.summary tr.level-subnet td:first-child{padding-left:36px}