:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Arial;color:#192539;background:#f5f7fb}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.55}#app{min-height:100vh}.login{max-width:420px;margin:12vh auto;padding:32px;background:white;border-radius:18px;box-shadow:0 10px 50px #28354d16}.login input{width:100%;margin:18px 0}.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{background:#fff;border-right:1px solid #e2e7ef;padding:22px 12px}.brand{font-weight:700;font-size:18px;padding:10px 12px 24px;color:#1659c6}.nav{display:block;width:100%;padding:12px 14px;border:0;background:transparent;text-align:left;border-radius:10px;color:#46536a;margin-bottom:4px}.nav.active{background:#eaf2ff;color:#1263dd}.main{padding:22px;min-width:0}.top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}.top h1{font-size:23px;font-weight:600;margin:0}.top small{color:#728198}.actions{display:flex;gap:8px;flex-wrap:wrap}.btn{border:1px solid #dce2eb;background:white;color:#243149;padding:9px 14px;border-radius:9px}.btn.primary{color:white;background:#1967e5;border-color:#1967e5}.cards{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.chip{background:#ebf6ef;color:#266644;padding:8px 12px;border-radius:9px;font-size:12px}.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:16px}.card{background:white;border:1px solid #e4e9f1;border-radius:13px;padding:17px;min-width:0}.card h2{font-size:16px;margin:0 0 14px;font-weight:600}.projects{display:flex;flex-direction:column;gap:7px}.project{border:1px solid #e2e8f2;background:white;border-radius:9px;text-align:left;padding:13px;overflow:hidden;text-overflow:ellipsis}.project.active{border-color:#8db6fa;background:#f0f6ff}.muted{font-size:13px;color:#77849a}.preview{width:100%;height:min(66vh,720px);border:1px solid #dee5ed;background:#f8fafc;border-radius:10px}.empty{display:grid;place-items:center;min-height:50vh;text-align:center;color:#65748a}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.input{border:1px solid #d9e1ec;border-radius:9px;padding:11px;width:100%;background:white}.form{display:flex;gap:9px;flex-wrap:wrap}.form input{flex:1;min-width:175px}.files{display:grid;grid-template-columns:280px minmax(0,1fr);gap:12px}.tree{height:66vh;overflow:auto;font-size:13px}.node{display:block;width:100%;border:0;background:transparent;text-align:left;padding:6px 5px;border-radius:6px;color:#3d4b61}.node:hover{background:#edf4ff}pre{white-space:pre;overflow:auto;background:#fbfcff;padding:16px;border-radius:8px;max-height:66vh;font-size:12px;line-height:1.6}.stack{display:grid;gap:12px}.hint{background:#f1f6ff;border-radius:10px;padding:13px;font-size:13px;color:#546985}.mobile-toggle{display:none}.status{color:#b94c35;font-size:13px}@media(max-width:850px){.shell{grid-template-columns:1fr}.sidebar{display:flex;overflow:auto;border-right:0;border-bottom:1px solid #e2e7ef;padding:8px}.brand{white-space:nowrap;padding:12px}.nav{width:auto;white-space:nowrap;margin:0}.main{padding:14px}.layout,.files{grid-template-columns:1fr}.top{align-items:flex-start;flex-direction:column}.preview{height:55vh}.tree{max-height:32vh}}