:root{--sidebar-width:220px;--brand-color:#1a56db;--bg:#f9fafb;--sidebar-bg:#071d2b;--sidebar-text:#cbd5e1;--sidebar-active:#fff;--sidebar-active-bg:#ffffff1a;--border:#e5e7eb}body{background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}input,textarea,select{font-size:max(16px,1em)}.app-shell{height:100dvh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--sidebar-bg);height:100%;color:var(--sidebar-text);flex-direction:column;flex-shrink:0;display:flex;overflow:hidden}.sidebar-brand{text-align:center;border-bottom:1px solid #ffffff14;padding:24px 20px 20px}.sidebar-logo{width:auto;height:52px;margin:0 auto;display:block}.brand-name{color:#fff;letter-spacing:-.5px;font-size:22px;font-weight:700}.sidebar-nav{-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;gap:2px;min-height:0;padding:12px 0;display:flex;overflow-y:auto}.nav-item{color:var(--sidebar-text);border-radius:6px;margin:0 8px;padding:10px 20px;font-size:14px;text-decoration:none;transition:background .15s;display:block}.nav-item:hover{color:var(--sidebar-active);background:#ffffff12}.nav-item.active{background:var(--sidebar-active-bg);color:var(--sidebar-active);font-weight:600}.sidebar-footer{border-top:1px solid #ffffff14;padding:16px}.user-info{flex-direction:column;gap:2px;margin-bottom:10px;display:flex}.user-name{color:#fff;font-size:13px;font-weight:500}.user-role{color:var(--sidebar-text);opacity:.7;font-size:11px}.logout-btn{width:100%;color:var(--sidebar-text);cursor:pointer;background:#ffffff14;border:none;border-radius:6px;padding:8px;font-size:13px;transition:background .15s}.logout-btn:hover{color:#fff;background:#ffffff26}.main-content{flex:1;padding:32px 40px;transition:padding-right .25s;overflow-y:auto}body.context-panel-open .main-content{padding-right:380px}.loading{color:#6b7280;justify-content:center;align-items:center;height:100vh;font-size:16px;display:flex}.hamburger-btn{z-index:1200;background:var(--sidebar-bg);cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;width:40px;height:40px;display:none;position:fixed;top:12px;left:12px;box-shadow:0 2px 8px #00000040}.sidebar-overlay{z-index:1100;background:#00000073;display:none;position:fixed;inset:0}@media (width<=768px){.hamburger-btn{display:flex}.sidebar{z-index:1150;width:260px;transition:transform .25s;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.open{display:block}.main-content{padding:60px 16px 16px}}.chat-container{background:#fff;border:1px solid #e5e7eb;border-radius:10px;height:560px;overflow:hidden}@media (width<=768px){.chat-container{height:420px}}@media (height<=600px){.sidebar-brand{padding:12px 20px}.sidebar-logo{height:36px}.sidebar-footer{padding:10px 16px}}.login-page{background:#f0f4ff;justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{text-align:center;background:#fff;border-radius:12px;width:100%;max-width:360px;padding:48px 40px;box-shadow:0 4px 24px #00000014}.login-brand{color:#1a56db;letter-spacing:-1px;margin-bottom:8px;font-size:36px;font-weight:800}.login-tagline{color:#6b7280;margin-bottom:32px;font-size:14px;line-height:1.5}.login-btn{color:#fff;cursor:pointer;background:#1a56db;border:none;border-radius:8px;width:100%;margin-bottom:16px;padding:12px;font-size:15px;font-weight:600;transition:background .15s}.login-btn:hover{background:#1e429f}.login-note{color:#9ca3af;font-size:12px;line-height:1.5}.chat-panel-shell{height:100%;display:flex}.chat-rail{background:#f9fafb;border-right:1px solid #e5e7eb;flex-shrink:0;width:210px;height:100%;overflow-y:auto}.chat-main{flex-direction:column;flex:1;min-width:0;height:100%;display:flex}@media (width<=768px){.chat-rail{width:72px}.chat-rail .chat-rail-label,.chat-rail .chat-rail-text{display:none}.chat-rail .chat-rail-btn{flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:8px 6px}}*{box-sizing:border-box;margin:0;padding:0}@keyframes spin{to{transform:rotate(360deg)}}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}#root{flex-direction:column;width:100%;min-height:100svh;display:flex}