:root{--bg: #0b1020;--card: #141b30;--accent: #2dd4bf;--accent-dim: #14b8a6;--text: #e6edf7;--muted: #8fa3c0;--error: #f87171;--border: #25314f}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:radial-gradient(1200px 600px at 20% -10%,#16224a 0%,var(--bg) 55%);color:var(--text)}.login-wrap{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:40px 36px;box-shadow:0 20px 60px #00000073}.login-logo{display:flex;justify-content:center;margin-bottom:6px}.login-logo img{display:block;width:100%;max-width:300px;height:auto}.login-sub{text-align:center;color:var(--muted);font-size:13px;margin-bottom:28px}.field{margin-bottom:16px}.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.field input{width:100%;padding:11px 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.big{font-size:26px;font-weight:800;color:var(--accent)}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.topbar .brand{display:block;height:44px;width:auto}.topbar .user{color:var(--muted);font-size:14px}.topbar .logout{background:none;border:1px solid var(--border);color:var(--muted);border-radius:8px;padding:7px 14px;cursor:pointer;font-size:13px}.topbar .logout:hover{color:var(--error);border-color:var(--error)}.topbar-right{display:flex;align-items:center;gap:10px;min-width:0}.lang{position:relative;display:flex;align-items:center;gap:6px}.lang-toggle{display:inline-flex;align-items:center;gap:6px;background:none;border:1px solid var(--border);color:var(--muted);border-radius:8px;padding:5px 8px;cursor:pointer;font-size:12px;font-weight:700}.lang-toggle img{display:block;width:20px;height:auto;border-radius:2px;opacity:.2;transition:opacity .15s}.lang-toggle:hover img,.lang-toggle[aria-expanded=true] 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img{opacity:1}.lang-item.active{color:var(--accent);font-weight:700}.lang-item:disabled{opacity:.4;cursor:not-allowed}.lang-badge{margin-left:auto;font-size:10px;color:var(--muted);white-space:nowrap}.lang-note{margin-top:8px;font-size:11px;color:var(--muted)}.nav{margin-bottom:24px}.nav-links{display:flex;flex-wrap:wrap;gap:6px;list-style:none}.nav-link{display:inline-block;padding:8px 14px;border:1px solid transparent;border-radius:8px;color:var(--muted);text-decoration:none;font-size:14px}.nav-link:hover{color:var(--text);border-color:var(--border)}.nav-link.active{background:var(--accent);color:#06231e;font-weight:700}.nav-toggle{display:none;align-items:center;gap:8px;background:none;border:1px solid var(--border);color:var(--text);border-radius:8px;padding:8px 14px;cursor:pointer;font-size:14px}.nav-burger{font-size:15px;line-height:1}.page h2{font-size:22px;margin-bottom:8px}.page p.muted{color:var(--muted);font-size:14px;max-width:62ch}.soon{display:inline-block;margin-top:14px;padding:3px 10px;border:1px solid var(--accent);border-radius:999px;color:var(--accent);font-size:11px;letter-spacing:1px;text-transform:uppercase}.topo-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:12px 0 10px}.topo-select,.topo-name-input{background:#0d1428;border:1px solid var(--border);color:var(--text);border-radius:8px;padding:9px 12px;font-size:14px;outline:none;transition:border-color .15s}.topo-select:focus,.topo-name-input:focus{border-color:var(--accent)}.topo-name-input{flex:1;min-width:150px}.btn-sm{width:auto;padding:9px 14px;font-size:13px}.btn-danger{background:transparent;border:1px solid var(--error);color:var(--error)}.btn-danger:hover:not(:disabled){background:#f871711f;color:var(--error)}.btn-danger:disabled{opacity:.5;cursor:not-allowed}.topo-main{display:grid;grid-template-columns:minmax(330px,460px) 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var(--border);border-radius:12px;padding:8px}.topo-graph{display:block}.topo-canvas{display:block;width:100%;height:auto;touch-action:none}.topo-popup-bg{fill:#0d1428;stroke:#25314f;stroke-width:1}.topo-popup-title{fill:var(--text);font-size:12px;font-weight:700}.topo-popup-hr{stroke:#25314f;stroke-width:1}.topo-popup-item{fill:#8fa3c0;font-size:11px;cursor:pointer;-webkit-user-select:none;user-select:none}.topo-popup-item:hover{fill:#2dd4bf}.topo-popup-item.busy,.topo-popup-item.busy:hover{fill:#f87171}.topo-canvas-link{font-size:12px;font-weight:700;pointer-events:none}.topo-canvas-port{font-size:10px;font-weight:700;pointer-events:none}.topo-edge{stroke:#3b4a6b;stroke-width:1.5}.topo-edge-back{stroke:#a78bfa;stroke-dasharray:5 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.user{font-size:12px}.welcome h1{letter-spacing:3px}.bg-logo{width:380px}.login-lang{top:10px;right:10px}.topo-editor{grid-template-columns:1fr}.topo-port{min-width:34px;padding:5px 3px}.topo-toolbar .topo-select{width:100%}.topo-main{grid-template-columns:1fr}.topo-slider input[type=range]{width:100px}}@media (max-width: 420px){.login-wrap{padding:14px}.login-card{padding:26px 18px}.dash h2{font-size:20px}}