:root{--bg:#faf4ee;--panel:#ffffff;--border:#dcd7d1;--text:#333333;--muted:#666666;--accent:#85a28c;--accent-hover:#6b8a6f;--tooltip-bg:#ffffff;--tooltip-fg:#333333}[data-theme=dark]{--bg:#121212;--panel:#1e1e1e;--border:#333333;--text:#e6e6e6;--muted:#b0b0b0;--accent:#5da37a;--accent-hover:#4a8964;--tooltip-bg:rgba(255,255,255,0.12);--tooltip-fg:#ffffff}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg);color:var(--text)}.App{height:100vh;overflow:hidden}button,input{font-family:inherit}.cl-internal-b3fm6y{background-color:var(--panel)!important;border:1px solid var(--border)!important;border-radius:8px!important}.cl-internal-b3fm6y input{background-color:initial!important;border:none!important;outline:none!important;color:var(--text)!important}.cl-internal-b3fm6y button{background-color:var(--accent)!important;color:white!important;border:none!important;border-radius:6px!important;padding:8px 16px!important;cursor:pointer!important;font-weight:500!important}.cl-internal-b3fm6y button:hover{background-color:var(--accent-hover)!important}.setup-container{max-width:600px;margin:50px auto;padding:30px;background:white;border-radius:8px;box-shadow:0 2px 10px rgba(0,0,0,.1);text-align:left}.setup-container h1{color:#333;margin-bottom:20px}.setup-container p{color:#666;line-height:1.6;margin-bottom:20px}.setup-container ol{margin-left:20px;margin-bottom:20px}.setup-container li{margin-bottom:10px;line-height:1.6}.setup-container code{background:#f5f5f5;padding:2px 6px;border-radius:4px;font-family:monospace}.setup-container a{color:#007bff;text-decoration:none}.setup-container a:hover{text-decoration:underline}.sign-in-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background:var(--bg);color:var(--text);text-align:center}.sign-in-container h1{margin-bottom:10px;font-size:2.2rem}.sign-in-container p{margin-bottom:24px;font-size:1.1rem;opacity:.9}.dashboard{display:flex;flex-direction:column;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.header{justify-content:space-between;padding:8px 12px;height:60px}.header,.logo-container{display:flex;align-items:center}.logo-container{gap:12px;cursor:pointer;color:var(--text)}.logo{width:40px;height:40px;border-radius:8px;object-fit:cover}.logo-container h1{font-size:24px;font-weight:600;color:var(--text);margin:0}.search-container{flex:1 1;max-width:400px;margin:0 20px}.search-input{display:flex;align-items:center;background-color:var(--panel);border:1px solid var(--border);border-radius:8px;padding:8px 12px;gap:8px}.search-input input{flex:1 1;border:none;outline:none;font-size:14px;background:transparent;color:var(--text)}.search-input svg{color:var(--muted)}.header-actions{display:flex;gap:8px}.icon-button{background:none;border:none;padding:8px;border-radius:6px;cursor:pointer;transition:background-color .2s}.icon-button:hover{background-color:rgba(0,0,0,.05)}.main-content{display:flex;flex:1 1;overflow:hidden}.sidebar{width:60px;padding:12px 0;display:flex;flex-direction:column;align-items:center;gap:12px}.sidebar-button{background:none;border:none;padding:8px;border-radius:10px;cursor:pointer;color:var(--text);transition:background-color .2s}.sidebar-button:hover{background:rgba(0,0,0,.06)}.drawer{width:320px;height:calc(100vh - 60px);position:relative;padding:16px}.drawer-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:12px;margin-bottom:12px}.drawer-header h3{margin:0;font-size:20px;color:var(--text);text-decoration:underline}.drawer-close{background:none;border:none;cursor:pointer;color:var(--text)}.drawer-content{overflow-y:auto;height:calc(100% - 48px)}.tabs-container{display:flex;flex-direction:column;gap:8px}.tab{display:flex;align-items:center;justify-content:space-between;background-color:var(--accent);color:white;padding:10px 12px;border-radius:12px;font-size:14px;cursor:pointer}.tab.active{background-color:var(--accent-hover);box-shadow:inset 0 0 0 2px rgba(107,138,111,.3)}.tab-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1 1}.tab-close{background:none;border:none;color:white;cursor:pointer;padding:2px 4px;margin-left:10px}.filter-section{margin-bottom:16px}.filter-section h4{margin:0 0 8px}.content{flex:1 1;padding:20px;overflow-y:auto}.home-view,.search-view{max-width:1200px;margin:0 auto}.home-view h2,.search-view h2{font-size:24px;font-weight:600;color:var(--text);margin-bottom:20px}.workbooks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));grid-gap:20px;gap:20px}.workbook-card{border-radius:8px;overflow:hidden;cursor:pointer;transition:transform .2s,box-shadow .2s}.workbook-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}.workbook-thumbnail{height:200px;overflow:hidden}.workbook-thumbnail img{width:100%;height:100%;object-fit:cover}.workbook-content{padding:16px}.workbook-title{font-size:18px;font-weight:600;color:var(--text);margin:0 0 8px;line-height:1.3}.workbook-description{font-size:14px;color:var(--muted);margin:0 0 12px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.workbook-tags{display:flex;flex-wrap:wrap;gap:4px}.tag{background-color:rgba(0,0,0,.06);padding:2px 8px;border-radius:12px;font-size:12px}.load-more-container{display:flex;justify-content:center;margin:20px 0 0}.load-more-button{background:var(--accent);color:white;border:none;padding:10px 16px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500}.load-more-button:hover{background:var(--accent-hover)}.workbook-view{height:100%;display:flex;flex-direction:column}.workbook-header{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--border);margin-bottom:16px}.workbook-header h2{margin:0;font-size:24px;font-weight:600;color:var(--text)}.close-button{background:none;border:none;padding:8px;border-radius:6px;cursor:pointer;color:var(--muted);transition:background-color .2s}.close-button:hover{background-color:rgba(0,0,0,.06)}.filters-panel{position:fixed;top:60px;right:0;width:300px;height:calc(100vh - 60px);background-color:var(--panel);border-left:1px solid var(--border);box-shadow:-2px 0 8px rgba(0,0,0,.1);z-index:1000;display:flex;flex-direction:column;color:var(--text)}.filters-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.filters-header h3{margin:0;font-size:18px;font-weight:600;color:var(--text)}.filters-content{flex:1 1;padding:16px;overflow-y:auto}.filter-section{margin-bottom:24px}.filter-section h4{font-size:16px;font-weight:600;color:var(--text);margin:0 0 12px}.filter-checkbox{display:flex;align-items:center;gap:8px;padding:4px 0;cursor:pointer;font-size:14px;color:var(--text)}.filter-checkbox input[type=checkbox]{margin:0;accent-color:var(--accent)}.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;background-color:#faf4ee}.auth-card{background-color:#ffffff;padding:40px;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.1);text-align:center;max-width:400px;width:100%}.auth-card h1{font-size:32px;font-weight:600;color:#333;margin:0 0 16px}.auth-card p{margin:0 0 24px}.auth-card p,.loading{font-size:16px;color:#666}.loading{display:flex;align-items:center;justify-content:center;padding:40px}.error-message{position:fixed;top:20px;right:20px;z-index:1000;background:#fee;border:1px solid #fcc;border-radius:8px;padding:16px;max-width:400px;box-shadow:0 4px 12px rgba(0,0,0,.15)}.error-content{display:flex;align-items:flex-start;gap:12px}.error-content h3{margin:0 0 8px;color:#c33;font-size:16px;font-weight:600}.error-content p{margin:0;color:#666;font-size:14px;line-height:1.4;flex:1 1}.error-close{background:none;border:none;color:#999;cursor:pointer;padding:4px;border-radius:4px;transition:color .2s}.error-close:hover{color:#666}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.8);display:flex;align-items:center;justify-content:center;z-index:999}.loading-spinner{background:white;padding:20px 40px;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.15);font-size:16px;color:#666}@media (max-width:768px){.header{padding:8px}.search-container{margin:0 12px}.content{padding:12px}.workbooks-grid{grid-template-columns:1fr}.filters-panel{width:100%;top:60px}}.workbook-iframe-container{position:relative;width:100%;height:calc(100vh - 120px);min-height:600px}.iframe-loading{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.9);display:flex;align-items:center;justify-content:center;border-radius:8px;z-index:10}.workbook-iframe{width:100%;height:100%;border:none}.iframe-fallback,.workbook-iframe{border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.1)}.iframe-fallback{position:absolute;top:0;left:0;right:0;bottom:0;background:white;display:flex;align-items:center;justify-content:center}.fallback-content{text-align:center;padding:40px;max-width:500px}.fallback-content h3{margin-bottom:20px;color:#333}.fallback-content p{margin-bottom:20px;color:#666}.fallback-content ul{text-align:left;margin-bottom:30px;color:#666}.fallback-content li{margin-bottom:8px}.open-external-button{background:#007bff;color:white;border:none;padding:12px 24px;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:background-color .2s}.open-external-button:hover{background:#0056b3}.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:2000}.modal-card{background:var(--panel);color:var(--text);border-radius:12px;padding:20px;width:360px;box-shadow:0 10px 30px rgba(0,0,0,.4)}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.button-secondary{background:rgba(0,0,0,.08);color:var(--text)}.button-primary,.button-secondary{border:none;padding:8px 12px;border-radius:6px;cursor:pointer}.button-primary{background:#c33;color:white}.dashboard{background-color:var(--bg);color:var(--text)}.header{border-bottom:1px solid var(--border)}.header,.sidebar{background-color:var(--panel)}.sidebar{border-right:1px solid var(--border)}.icon-button{color:var(--muted)}.content{color:var(--text)}.workbook-card{background-color:var(--panel);border:1px solid var(--border)}.tag{background-color:#2a2a2a11;color:var(--muted)}.drawer{background:var(--panel);border-right:1px solid var(--border);color:var(--text)}.drawer-header{border-bottom:1px solid var(--border)}.theme-toggle{background:none;border:none;color:var(--text);padding:8px;border-radius:10px;cursor:pointer;transition:background-color .2s;margin-top:0}.theme-toggle:hover{background:rgba(0,0,0,.06)}.tooltip{position:relative}.tooltip:after{content:attr(data-tooltip);position:absolute;left:56px;top:50%;transform:translateY(-50%);white-space:nowrap;background:var(--tooltip-bg);color:var(--tooltip-fg);padding:6px 8px;border-radius:6px;font-size:12px;line-height:1;pointer-events:none;opacity:0;transition:opacity 40ms ease-in;z-index:1500;border:1px solid rgba(0,0,0,.2)}[data-theme=dark] .tooltip:after{border:1px solid rgba(255,255,255,.2)}.tooltip:hover:after{opacity:1}