:root{--bg: #0a0a0a;--bg-elev: #141414;--bg-elev-2: #1c1c1c;--border: #262626;--fg: #f5f5f5;--fg-dim: #a3a3a3;--fg-mute: #6b6b6b;--accent: #ffffff;--user-bubble: #1f3a5f;--asst-bubble: #1c1c1c;--danger: #ef4444;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,system-ui,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;width:100%;background:var(--bg);color:var(--fg);-webkit-tap-highlight-color:transparent;overflow:hidden}button{font-family:inherit;cursor:pointer}.app{display:grid;grid-template-columns:280px 1fr;height:100dvh;width:100vw}@media (max-width: 768px){.app{grid-template-columns:1fr}.sidebar{position:fixed;inset:0 auto 0 0;width:80%;max-width:320px;z-index:10;transform:translate(-100%);transition:transform .2s ease}.sidebar.open{transform:translate(0)}}.sidebar{background:var(--bg-elev);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-header{padding:max(16px,calc(env(safe-area-inset-top) + 8px)) 16px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px}.sidebar-close{background:none;border:none;color:var(--fg);font-size:22px;line-height:1;padding:6px 10px;cursor:pointer;flex-shrink:0}.sidebar-backdrop{position:fixed;inset:0;background:#00000080;z-index:9}.sidebar-title{font-size:18px;font-weight:700;letter-spacing:.5px}.sidebar-subtitle{font-size:11px;color:var(--fg-mute);margin-top:2px;text-transform:uppercase;letter-spacing:.8px}.doc-list{flex:1;overflow-y:auto;padding:8px}.doc-item{padding:10px 12px;border-radius:8px;font-size:13px;color:var(--fg-dim);margin-bottom:4px;cursor:default;display:flex;flex-direction:column;gap:2px}.doc-item:hover{background:var(--bg-elev-2);color:var(--fg)}.doc-meta{font-size:11px;color:var(--fg-mute)}.empty-state{padding:24px 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textarea{flex:1;resize:none;background:var(--bg-elev);color:var(--fg);border:1px solid var(--border);border-radius:12px;padding:10px 14px;font-size:15px;font-family:inherit;outline:none;max-height:140px;min-height:44px;line-height:1.4}.composer textarea:focus{border-color:var(--fg-mute)}.composer button{background:var(--fg);color:#000;border:none;border-radius:12px;padding:0 18px;font-weight:600;font-size:14px;height:44px;align-self:flex-end}.composer button:disabled{background:var(--bg-elev-2);color:var(--fg-mute);cursor:not-allowed}.composer .camera-btn{background:var(--bg-elev);color:var(--fg);border:1px solid var(--border);width:44px;padding:0;font-size:20px;align-self:flex-end}.composer .camera-btn:disabled{background:var(--bg-elev);opacity:.4}.image-preview{display:flex;align-items:center;gap:10px;padding:8px 12px;margin:0 12px;background:var(--bg-elev);border:1px solid var(--border);border-radius:12px}.image-preview button{background:transparent;color:var(--fg-mute);border:none;font-size:16px;cursor:pointer}.loader-screen{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:100;flex-direction:column;gap:24px;padding:24px}.loader-content{max-width:420px;width:100%;text-align:center}.loader-title{font-size:22px;font-weight:700;margin-bottom:8px}.loader-stage{color:var(--fg-dim);font-size:14px;margin-bottom:16px;min-height:20px}.progress-bar{width:100%;height:6px;background:var(--bg-elev-2);border-radius:999px;overflow:hidden}.progress-fill{height:100%;background:var(--fg);transition:width .3s ease}.loader-detail{font-size:12px;color:var(--fg-mute);margin-top:10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.loader-error{color:var(--danger);font-size:13px;margin-top:16px;line-height:1.5}.update-btn{position:fixed;top:max(8px,calc(env(safe-area-inset-top) + 4px));right:10px;z-index:50;font-size:12px;padding:5px 10px;border-radius:14px;border:1px solid rgba(255,255,255,.18);background:#28282ed9;color:#cfcfd6;backdrop-filter:blur(6px)}.update-btn:disabled{opacity:.6}