:root{--header-height:136px;--sidebar-width:438px;--bg:#ffffff;--header-bg:#ffffff;--sidebar-bg:#f7f8f9;--surface:#ffffff;--surface-soft:#f4f5f6;--surface-hover:#eceef1;--text:#111318;--muted:#737985;--border:#dfe3e8;--border-strong:#cfd5dc;--welcome-bg:#edf3f8;--composer-bg:#ffffff;--danger:#bd3d3d;--shadow:0 10px 35px rgba(21,28,38,0.06)}*{box-sizing:border-box}body,html{margin:0;width:100%;min-height:100%}body{overflow:hidden;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit}button{color:inherit}.bridge-app{width:100vw;height:100vh;overflow:hidden;background:var(--bg);color:var(--text)}.bridge-app.dark{--bg:#061d2b;--header-bg:#071d2b;--sidebar-bg:#061924;--surface:#0b2738;--surface-soft:#0d2a3b;--surface-hover:#12354a;--text:#ffffff;--muted:#9fb1bf;--border:#244050;--border-strong:#2a495b;--welcome-bg:#123247;--composer-bg:#0b2638;--danger:#ff9f9f;--shadow:0 12px 34px rgba(0,0,0,0.18)}.center-screen,.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:#f8f9fb}.login-card,.status-card{width:min(100%,430px);background:white;border:1px solid #e1e5ea;border-radius:22px;padding:32px;box-shadow:0 20px 60px rgba(28,38,52,.08);color:#111318}.login-logo{display:block;width:min(280px,100%);max-height:110px;object-fit:contain;object-position:left center;margin-bottom:18px;margin-left:auto;margin-right:auto}.login-card h1{margin:0 0 7px;font-size:28px}.login-card>p{margin:0 0 24px;color:#707782;line-height:1.5}.login-card form{display:grid;grid-gap:16px;gap:16px}.login-card label{display:grid;grid-gap:8px;gap:8px;font-size:14px}.login-card input{width:100%;border:1px solid #dce1e6;background:white;color:#111318;border-radius:12px;padding:12px 14px;outline:none}.login-card input:focus{border-color:#929ca8}.primary-button{border:0;border-radius:12px;background:#101317;color:white;padding:12px 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var(--border);border-radius:16px;background:var(--surface-soft);color:var(--text);display:grid;place-items:center;cursor:pointer}.sidebar-toggle:hover{background:var(--surface-hover)}.mobile-toggle{display:none}.header-brand{min-width:0;height:100%;display:flex;align-items:center;justify-content:flex-start;position:relative}.header-logo{width:min(285px,40vw);max-height:100px;object-fit:contain;object-position:left center;display:block}.header-brand-fallback{display:none;font-size:28px;font-weight:800}.header-actions{justify-self:end}.theme-toggle{min-width:166px;height:54px;padding:0 20px;border:1px solid var(--border);border-radius:17px;background:var(--surface-soft);color:var(--text);display:inline-flex;align-items:center;justify-content:center;gap:9px;cursor:pointer;font-size:16px}.theme-toggle:hover{background:var(--surface-hover)}.bridge-body{height:calc(100vh - var(--header-height));display:grid;grid-template-columns:var(--sidebar-width) minmax(0,1fr);transition:grid-template-columns .18s ease}.bridge-body.sidebar-hidden{grid-template-columns:0 minmax(0,1fr)}.bridge-sidebar{width:var(--sidebar-width);height:100%;min-width:0;background:var(--sidebar-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;transition:width .18s ease,opacity .12s ease;z-index:30}.sidebar-hidden .bridge-sidebar{width:0;opacity:0;border-right:0;pointer-events:none}.sidebar-mobile-header{display:none}.sidebar-top{padding:18px}.new-chat-button{width:100%;border:1px solid var(--border);border-radius:13px;background:var(--surface);padding:11px 13px;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.new-chat-button:hover{background:var(--surface-hover)}.conversation-list{flex:1 1;min-height:0;overflow-y:auto;padding:0 12px 14px}.conversation-item{width:100%;display:flex;align-items:center;border-radius:11px;margin:3px 0}.conversation-item.active,.conversation-item:hover{background:var(--surface-hover)}.conversation-open{flex:1 1;min-width:0;border:0;background:transparent;text-align:left;padding:11px;cursor:pointer}.conversation-open span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.conversation-delete{width:34px;height:34px;margin-right:5px;border:0;border-radius:8px;background:transparent;color:var(--muted);display:grid;place-items:center;cursor:pointer;opacity:0}.conversation-item.active .conversation-delete,.conversation-item:hover .conversation-delete{opacity:1}.conversation-delete:hover{color:var(--danger);background:var(--surface)}.sidebar-user{border-top:1px solid var(--border);padding:13px 15px;justify-content:space-between;gap:12px}.sidebar-user,.user-info{display:flex;align-items:center}.user-info{gap:9px;min-width:0}.user-info>div{display:grid;min-width:0}.user-info 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1;min-width:0;border:0;background:transparent;color:var(--text);padding:12px;text-align:left;cursor:pointer}.prompt-template-select:hover{background:var(--surface-hover)}.prompt-template-title{display:flex;align-items:center;gap:7px}.prompt-template-title strong{font-size:14px}.prompt-template-title span{margin-left:auto;color:var(--muted);font-size:10px;border:1px solid var(--border);border-radius:999px;padding:2px 6px}.prompt-template-item p{margin:7px 0 5px;font-size:12px;line-height:1.4}.prompt-template-item small{color:var(--muted);font-size:10px}