:root{--primary-color: #0070f3;--error-color: #ff0000;--text-color: #e0e0e0;--background-color: #121212;--card-background: #1e1e1e;--border-color: #333;--control-background: #252525;--control-hover: #3a3a3a}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;margin:0;padding:0;background:var(--background-color);color:var(--text-color);height:100vh;overflow:hidden}.site-header{background:var(--card-background);padding:0;box-shadow:0 2px 8px #0003;position:relative;z-index:10}.header-container{max-width:1200px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;justify-content:space-between}.site-header h1{margin:0;font-size:1.5rem;white-space:nowrap}.document-controls{display:flex;align-items:center;gap:20px;flex-wrap:nowrap}.control-group{display:flex;align-items:center;background:var(--control-background);border-radius:8px;padding:4px 8px;gap:8px;box-sizing:border-box;height:42px}.control-btn{background:none;color:var(--text-color);border:none;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;cursor:pointer;font-size:16px;transition:background-color .2s;margin:0;padding:0;line-height:1}.control-btn:hover{background-color:var(--control-hover)}.control-btn:disabled{opacity:.4;cursor:not-allowed}.control-btn span{font-weight:700;display:flex;align-items:center;justify-content:center;line-height:1}.page-info,.zoom-info{color:var(--text-color);font-size:14px;padding:0 6px;display:flex;align-items:center;justify-content:center;height:100%;line-height:1}.page-info span{display:inline-flex;align-items:center;justify-content:center;height:100%;line-height:1}.container{max-width:100%;margin:0;padding:0;height:calc(100vh - 64px);display:flex;flex-direction:column;overflow:hidden}#error{padding:10px 20px;background:#ff00001a;border-radius:4px;margin:10px 20px}#viewer-container{background:var(--card-background);border-radius:0;box-shadow:none;flex:1;position:relative;overflow:hidden;display:flex;flex-direction:column}.auth-container{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.auth-box{background:var(--card-background);padding:2.5rem 2rem;border-radius:8px;box-shadow:0 4px 12px #0000004d;width:90%;max-width:360px;text-align:center;margin:0 auto}.auth-form{display:flex;flex-direction:column;gap:1.25rem;width:100%}.form-group{margin-bottom:0;width:100%}.form-group input{width:100%;box-sizing:border-box;padding:.75rem;border:1px solid var(--border-color);border-radius:4px;font-size:1rem;background-color:var(--background-color);color:var(--text-color)}.form-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #0070f333}.auth-form button{background:var(--primary-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:4px;font-size:1rem;cursor:pointer;transition:opacity .2s;margin-top:.5rem;width:100%}.auth-form button:hover{opacity:.9}.auth-form .error-message{color:var(--error-color);text-align:center;padding:.5rem;margin:0;font-size:.9rem}.error-message{color:var(--error-color);text-align:center;padding:.5rem}#canvas-container{height:100%;overflow:auto;text-align:center;background-color:var(--background-color);flex:1;padding:20px 0;position:relative}#scroll-container{height:100%;overflow-y:auto;background-color:var(--background-color);flex:1;padding:20px 0}#pagination-controls,#scroll-page-counter,.zoom-controls{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:4px 8px;background:var(--control-background);border-radius:8px;box-shadow:none;margin-bottom:0;color:var(--text-color);height:42px;box-sizing:border-box}.loading{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;color:var(--text-color)}.loading-spinner{border:4px solid rgba(255,255,255,.1);border-left-color:var(--primary-color);border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto 20px}button{background:var(--primary-color);color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer;font-size:14px;transition:opacity .2s}button:disabled{opacity:.5;cursor:not-allowed}button:hover:not(:disabled){opacity:.9}.zoom-controls{display:flex;align-items:center;gap:10px;height:42px;box-sizing:border-box}@keyframes spin{to{transform:rotate(360deg)}}.hidden{display:none!important}.auth-container:not(.hidden){display:flex}.pdf-page{margin-bottom:20px;position:relative}.tap-zone{display:none;position:absolute;top:0;height:100%;width:33.33%;z-index:5;opacity:0;transition:opacity .3s;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation}.tap-zone.left{left:0;background:linear-gradient(to right,rgba(255,255,255,.15),transparent)}.tap-zone.right{right:0;background:linear-gradient(to left,rgba(255,255,255,.15),transparent)}.tap-zone.left:before,.tap-zone.right:before{content:"";position:absolute;top:50%;width:15px;height:30px;opacity:0;transition:opacity .3s;background-repeat:no-repeat;background-size:contain}.tap-zone.left:before{left:20px;transform:translateY(-50%);border-bottom:15px solid transparent;border-top:15px solid transparent;border-right:15px solid rgba(255,255,255,.6);border-left:0}.tap-zone.right:before{right:20px;transform:translateY(-50%);border-bottom:15px solid transparent;border-top:15px solid transparent;border-left:15px solid rgba(255,255,255,.6);border-right:0}.tap-zone-visible .tap-zone{opacity:.3}.tap-zone-visible .tap-zone:before{opacity:1}.tap-zone:active{opacity:.5!important}@media screen and (max-width: 768px){.header-container{padding:8px 10px;height:auto;min-height:56px;flex-direction:column}.site-header h1{font-size:1.3rem;margin-bottom:6px}.document-controls{gap:8px;width:100%;justify-content:center;flex-wrap:wrap;margin-bottom:4px;align-items:center}.control-group{padding:2px 4px;gap:4px;height:32px;display:flex;align-items:center;box-sizing:border-box}.control-btn{width:28px;height:28px;font-size:14px;padding:0;margin:0;line-height:1}.control-btn span{display:flex;align-items:center;justify-content:center;line-height:1}.page-info,.zoom-info{font-size:12px;padding:0 4px;min-width:60px;text-align:center;display:flex;align-items:center;justify-content:center;height:100%;line-height:1}.zoom-info{display:none}.container{height:calc(100vh - 112px)}.tap-zone{display:block}#canvas-container,#scroll-container{-webkit-overflow-scrolling:touch;touch-action:pan-x pan-y;overscroll-behavior:contain;padding:10px 0}.pdf-page canvas{max-width:100%;height:auto!important}.auth-box{padding:1.5rem 1rem;width:95%}.zoom-controls{height:32px;padding:2px 4px}#pagination-controls,#scroll-page-counter,.zoom-controls{padding:2px 4px;height:32px;min-width:auto;gap:4px}}@media screen and (max-width: 480px){.document-controls{gap:6px;flex-direction:row;align-items:center}#pagination-controls,#scroll-page-counter,.zoom-controls{min-width:auto;padding:2px 4px;height:28px;box-sizing:border-box;gap:4px}.control-btn{width:24px;height:24px;font-size:12px;display:flex;align-items:center;justify-content:center;padding:0;margin:0;line-height:1}.control-btn span{font-size:12px;line-height:1;display:flex;align-items:center;justify-content:center}.page-info{font-size:11px;min-width:50px;display:flex;align-items:center;justify-content:center;height:100%;line-height:1}.container{height:calc(100vh - 100px)}.control-group{height:28px;padding:2px 4px}}canvas{display:block;max-width:100%;margin:0 auto}.homepage{display:flex;align-items:center;justify-content:center;height:100%;width:100%;background-color:var(--background-color)}.homepage-content{background:var(--card-background);padding:2.5rem;border-radius:8px;box-shadow:0 4px 12px #0003;max-width:600px;text-align:center;margin:0 20px}.homepage-content h2{color:var(--text-color);margin-top:0;margin-bottom:1.5rem;font-size:2rem}.homepage-content p{margin-bottom:1rem;font-size:1.1rem;line-height:1.6}.homepage-content a{color:var(--primary-color);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s}.homepage-content a:hover{border-bottom-color:var(--primary-color)}@media screen and (max-width: 480px){.homepage-content{padding:1.5rem}.homepage-content h2{font-size:1.5rem}.homepage-content p{font-size:1rem}}