:root{--bg: #0d0d10;--rail: #131318;--rail-border: rgba(255, 255, 255, .07);--text: #e8e8ea;--muted: #9a9aa2;--accent: #d35041;--rail-w: 232px;--rail-w-collapsed: 64px;--topbar-h: 44px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.hub{display:flex;height:100vh;width:100vw;overflow:hidden}.rail{width:var(--rail-w);flex:0 0 var(--rail-w);background:var(--rail);border-right:1px solid var(--rail-border);display:flex;flex-direction:column;padding:14px 12px;transition:width .18s ease,flex-basis .18s ease}.is-collapsed .rail{width:var(--rail-w-collapsed);flex-basis:var(--rail-w-collapsed)}.brand{display:flex;align-items:center;gap:10px;padding:6px 6px 16px}.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--accent);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;flex:0 0 auto}.brand-word{font-weight:600;letter-spacing:.12em;font-size:14px;white-space:nowrap;overflow:hidden;transition:opacity .12s ease}.is-collapsed .brand-word{opacity:0;width:0}.nav{display:flex;flex-direction:column;gap:4px;flex:1}.nav-item{display:flex;align-items:center;gap:12px;width:100%;padding:10px;border:0;border-radius:10px;background:transparent;color:var(--muted);font:inherit;font-size:14px;font-weight:500;text-align:left;cursor:pointer;transition:background .12s,color .12s}.nav-item:hover{background:#ffffff0d;color:var(--text)}.nav-item.is-active{background:color-mix(in srgb,var(--accent) 16%,transparent);color:#fff}.nav-item.is-active .nav-icon{color:var(--accent)}.nav-icon{display:flex;flex:0 0 auto;width:22px;height:22px}.nav-icon svg{width:22px;height:22px}.nav-label{white-space:nowrap;overflow:hidden;transition:opacity .12s ease}.is-collapsed .nav-label{opacity:0;width:0}.is-collapsed .nav-item{justify-content:center;gap:0}.collapse-btn{margin-top:8px;display:flex;align-items:center;gap:12px;padding:10px;border:0;border-radius:10px;background:transparent;color:var(--muted);font:inherit;font-size:13px;cursor:pointer}.collapse-btn:hover{background:#ffffff0d;color:var(--text)}.collapse-btn svg{width:20px;height:20px;flex:0 0 auto}.is-collapsed .collapse-btn{justify-content:center}.stage{flex:1;display:flex;flex-direction:column;min-width:0;background:#fff}.topbar{height:var(--topbar-h);flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 10px 0 16px;background:var(--rail);border-bottom:1px solid var(--rail-border);color:var(--text)}.topbar-title{font-size:13px;font-weight:600;letter-spacing:.02em}.topbar-actions{display:flex;gap:4px}.topbar-actions button,.topbar-actions a{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;border:0;background:transparent;color:var(--muted);cursor:pointer}.topbar-actions button:hover,.topbar-actions a:hover{background:#ffffff12;color:var(--text)}.topbar-actions svg{width:17px;height:17px}.frames{position:relative;flex:1;min-height:0}.frame-wrap{position:absolute;top:0;right:0;bottom:0;left:0;display:none;background:#fff}.frame-wrap.is-active{display:block}.frame-wrap iframe{width:100%;height:100%;border:0;display:block}.frame-loading{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;display:flex;align-items:center;justify-content:center;gap:10px;background:#fff;color:#8a8a92;font-size:14px}.spinner{width:18px;height:18px;border:2px solid rgba(0,0,0,.12);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.hub-loading{height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-screen{height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px}.login-card{width:100%;max-width:340px;display:flex;flex-direction:column;gap:12px;background:var(--rail);border:1px solid var(--rail-border);border-radius:16px;padding:28px 24px}.login-brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:.12em;font-size:16px;color:var(--text)}.login-sub{margin:0 0 8px;color:var(--muted);font-size:13px}.login-card input{height:40px;border-radius:10px;border:1px solid var(--rail-border);background:#0b0b0e;color:var(--text);padding:0 12px;font:inherit;font-size:14px}.login-card input:focus{outline:none;border-color:var(--accent)}.login-card button{height:40px;border:0;border-radius:10px;background:var(--accent);color:#fff;font:inherit;font-size:14px;font-weight:600;cursor:pointer;margin-top:4px}.login-card button:disabled{opacity:.6;cursor:default}.login-error{color:#ff8c7a;font-size:13px}@media (max-width: 640px){.rail{width:var(--rail-w-collapsed);flex-basis:var(--rail-w-collapsed)}.rail .nav-label,.rail .brand-word{opacity:0;width:0}.rail .nav-item{justify-content:center;gap:0}}