@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700&display=swap";:root{--bg-gradient-start: #ffffff;--bg-gradient-end: #ffffff;--panel-bg: rgba(255, 255, 255, .75);--panel-border: rgba(0, 0, 0, .08);--text-primary: #0f172a;--text-secondary: #475569;--accent: #0284c7;--accent-hover: #0369a1;--accent-glow: rgba(2, 132, 199, .15);--book-bg: #f8fafc;--book-cover-bg: linear-gradient(135deg, #334155 0%, #1e293b 100%);--book-cover-border: #475569;--page-bg: #ffffff;--page-border: rgba(0, 0, 0, .08);--page-shadow-color: rgba(0, 0, 0, .1);--spine-shadow: linear-gradient(to right, rgba(0, 0, 0, .12) 0%, rgba(0, 0, 0, 0) 100%);--page-gradient: linear-gradient(to right, rgba(0, 0, 0, .04) 0%, rgba(0, 0, 0, 0) 5%, rgba(0, 0, 0, 0) 95%, rgba(0, 0, 0, .04) 100%);--slider-track: rgba(0, 0, 0, .08);--slider-thumb: #0284c7}[data-theme=warm]{--bg-gradient-start: #f5f2eb;--bg-gradient-end: #e6dfd3;--panel-bg: rgba(253, 252, 249, .85);--panel-border: rgba(0, 0, 0, .06);--text-primary: #2d2a24;--text-secondary: #706b5e;--accent: #d97706;--accent-hover: #b45309;--accent-glow: rgba(217, 119, 6, .15);--book-bg: #e2d9c8;--book-cover-bg: linear-gradient(135deg, #5c4033 0%, #3d2b1f 100%);--book-cover-border: #4a3728;--page-bg: #fffcf7;--page-border: rgba(0, 0, 0, .08);--page-shadow-color: rgba(0, 0, 0, .12);--spine-shadow: linear-gradient(to right, rgba(0, 0, 0, .15) 0%, rgba(0, 0, 0, 0) 100%);--page-gradient: linear-gradient(to right, rgba(0, 0, 0, .06) 0%, rgba(0, 0, 0, 0) 4%, rgba(0, 0, 0, 0) 96%, rgba(0, 0, 0, .06) 100%);--slider-track: rgba(0, 0, 0, .08);--slider-thumb: #d97706}*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Inter,system-ui,-apple-system,sans-serif;background:linear-gradient(135deg,var(--bg-gradient-start) 0%,var(--bg-gradient-end) 100%);color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column;overflow:hidden;transition:background .5s ease}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;position:relative;z-index:1}.glass-panel{background:var(--panel-bg);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border:1px solid var(--panel-border);box-shadow:0 8px 32px #0003}.control-bar{position:absolute;top:16px;left:20px;right:80px;display:flex;justify-content:space-between;align-items:center;padding:12px 24px;border-radius:16px;z-index:100;transition:transform .4s cubic-bezier(.4,0,.2,1),opacity .4s}.brand-section{display:flex;align-items:center;gap:12px}.brand-icon{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-hover) 100%);color:#fff;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;font-family:Outfit,sans-serif;box-shadow:0 4px 12px var(--accent-glow)}.doc-title{font-family:Outfit,sans-serif;font-size:16px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}.center-controls{display:flex;align-items:center;gap:8px}.page-input-container{display:flex;align-items:center;background:#0003;border:1px solid var(--panel-border);border-radius:8px;padding:4px 10px;font-size:14px}.page-input{width:45px;background:transparent;border:none;color:var(--text-primary);text-align:center;font-family:Outfit,sans-serif;font-weight:600;font-size:14px;outline:none}.page-input::-webkit-outer-spin-button,.page-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.page-input[type=number]{-moz-appearance:textfield}.page-total{color:var(--text-secondary);margin-left:2px}.nav-btn{background:transparent;border:1px solid var(--panel-border);color:var(--text-primary);width:34px;height:34px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}.nav-btn:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 10px var(--accent-glow)}.nav-btn:disabled{opacity:.4;cursor:not-allowed}.right-controls{display:flex;align-items:center;gap:12px}.zoom-container{display:flex;align-items:center;background:#00000026;border:1px solid var(--panel-border);border-radius:8px;padding:2px}.zoom-btn{background:transparent;border:none;color:var(--text-primary);width:30px;height:30px;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;font-size:14px;font-weight:600}.zoom-btn:hover{background:#ffffff1a}.zoom-text{font-size:12px;font-weight:600;width:48px;text-align:center;font-family:Outfit,sans-serif;color:var(--text-secondary)}.action-btn{background:transparent;border:1px solid var(--panel-border);color:var(--text-primary);width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.action-btn:hover{background:#ffffff1a;color:var(--accent);border-color:var(--accent)}.book-viewport{flex:1;display:flex;align-items:center;justify-content:center;padding:20px 40px;perspective:2200px;overflow:auto;position:relative;touch-action:none}.book-cover{position:relative;display:flex;align-items:center;justify-content:center;background:var(--book-cover-bg);border:4px solid var(--book-cover-border);border-radius:12px;box-shadow:0 25px 50px -12px #00000080,0 0 40px #0003 inset,0 4px 20px #0000004d;padding:10px;transition:all .5s ease;transform-style:preserve-3d}.book-cover:after{content:"";position:absolute;top:0;bottom:0;left:calc(50% - 8px);width:16px;background:linear-gradient(to right,#0006,#ffffff26,#0000001a,#ffffff26,#0006);box-shadow:0 0 10px #00000080;z-index:100;pointer-events:none}.book{position:relative;width:100%;height:100%;transform-style:preserve-3d;background-color:var(--page-bg);box-shadow:0 0 15px #0003;border-radius:4px}.sheet{position:absolute;top:0;right:0;width:50%;height:100%;transform-origin:left center;transform-style:preserve-3d;z-index:1;pointer-events:none}.sheet.flipped{transform:rotateY(-180deg)}.page{position:absolute;top:0;left:0;width:100%;height:100%;background-color:var(--page-bg);backface-visibility:hidden;display:flex;flex-direction:column;overflow:hidden;-webkit-user-select:none;user-select:none;box-shadow:1px 0 0 var(--page-border) inset,-1px 0 0 var(--page-border) inset}.page.front{z-index:2;border-radius:0 4px 4px 0;box-shadow:5px 0 15px var(--page-shadow-color)}.page.back{transform:rotateY(180deg);z-index:1;border-radius:4px 0 0 4px;box-shadow:-5px 0 15px var(--page-shadow-color)}.page:before{content:"";position:absolute;top:0;left:0;width:100%;height:100%;background:var(--page-gradient);pointer-events:none;z-index:5}.page.front:after{content:"";position:absolute;top:0;left:0;width:25px;height:100%;background:var(--spine-shadow);pointer-events:none;z-index:6}.page.back:after{content:"";position:absolute;top:0;right:0;width:25px;height:100%;background:linear-gradient(to left,#0003,#0000);pointer-events:none;z-index:6}.page-content{flex:1;position:relative;display:flex;align-items:center;justify-content:center;width:100%;height:100%;overflow:hidden;padding:10px}.page-content canvas{width:100%;height:100%;object-fit:contain;box-shadow:0 2px 8px #0000000d}.page-skeleton{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;justify-content:center;align-items:center;background:var(--page-bg);z-index:4;gap:16px;color:var(--text-secondary)}.spinner{width:32px;height:32px;border:3px solid rgba(0,0,0,.05);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.page-skeleton span{font-size:12px;font-weight:500;font-family:Outfit,sans-serif;letter-spacing:.05em;text-transform:uppercase}.page-number{position:absolute;bottom:12px;font-size:11px;font-weight:600;font-family:Outfit,sans-serif;color:var(--text-secondary);z-index:10;opacity:.7}.page.front .page-number{right:20px}.page.back .page-number{left:20px}.click-zone{position:absolute;top:0;width:15%;height:100%;z-index:50;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;color:#fff;font-size:32px;text-shadow:0 2px 8px rgba(0,0,0,.5);pointer-events:auto}.click-zone-left{left:0;background:linear-gradient(to right,#00000026,#0000);border-top-left-radius:12px;border-bottom-left-radius:12px}.click-zone-right{right:0;background:linear-gradient(to left,#00000026,#0000);border-top-right-radius:12px;border-bottom-right-radius:12px}.click-zone:hover{opacity:1}.click-zone span{background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px #0000004d}.book-viewport.zoomed{align-items:flex-start;justify-content:flex-start;overflow:auto}.book-viewport.zoomed .book-cover{transform-origin:top left}.bottom-bar{position:absolute;bottom:16px;left:20px;right:20px;padding:12px 24px;border-radius:16px;display:flex;align-items:center;gap:16px;z-index:100;transition:transform .4s cubic-bezier(.4,0,.2,1),opacity .4s}.slider-container{flex:1;display:flex;align-items:center;position:relative}.progress-slider{width:100%;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--slider-track);height:6px;border-radius:3px;outline:none;cursor:pointer;transition:background .3s}.progress-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--slider-thumb);box-shadow:0 0 10px var(--accent-glow);cursor:pointer;transition:transform .1s,background-color .2s}.progress-slider::-webkit-slider-thumb:hover{transform:scale(1.2);background:var(--accent-hover)}.progress-slider::-moz-range-thumb{width:16px;height:16px;border:none;border-radius:50%;background:var(--slider-thumb);box-shadow:0 0 10px var(--accent-glow);cursor:pointer;transition:transform .1s,background-color .2s}.progress-slider::-moz-range-thumb:hover{transform:scale(1.2);background:var(--accent-hover)}.loading-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:9999;gap:20px;opacity:1;transition:opacity .5s ease}.loading-overlay.hidden{opacity:0;pointer-events:none}.loading-spinner{width:50px;height:50px;border:4px solid rgba(0,0,0,.05);border-top-color:var(--accent);border-radius:50%;animation:spin 1s cubic-bezier(.5,0,.5,1) infinite}.loading-text{font-family:Outfit,sans-serif;font-weight:500;font-size:16px;color:var(--text-primary);letter-spacing:.05em}.loading-progress{width:200px;height:4px;background:#00000014;border-radius:2px;overflow:hidden;position:relative}.loading-progress-bar{height:100%;width:0%;background:linear-gradient(to right,var(--accent),var(--accent-hover));transition:width .1s ease}.keyboard-hint{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary);font-weight:500}.key-cap{background:#ffffff1a;border:1px solid var(--panel-border);border-radius:4px;padding:2px 6px;font-family:monospace;font-size:10px}@media(max-width:900px){.book-viewport{padding:10px}.book-cover{padding:4px;border-width:2px}.book-cover:after{display:none}.sheet{width:100%;left:0;right:auto;transform-origin:center center}.sheet.flipped{transform:rotateY(0);opacity:0;pointer-events:none}.page{border-radius:8px!important;box-shadow:0 4px 12px #00000026!important}.page:after{display:none!important}.page.back{transform:rotateY(0);display:none}.sheet.flipped-single .page.back{display:flex;z-index:10}.sheet.flipped-single .page.front,.keyboard-hint{display:none}}.menu-toggle-btn{position:absolute;top:16px;right:20px;z-index:1000;width:44px;height:44px;border-radius:50%!important;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px #0000004d!important;cursor:pointer;transition:transform .3s cubic-bezier(.4,0,.2,1),background .3s,border-color .3s!important}.menu-toggle-btn:hover{transform:scale(1.1);background:var(--accent)!important;border-color:var(--accent)!important;color:#fff!important}.menu-toggle-btn svg{transition:transform .3s ease}.controls-hidden .control-bar{transform:translateY(-100px);opacity:0;pointer-events:none}.controls-hidden .bottom-bar{transform:translateY(100px);opacity:0;pointer-events:none}@media(max-width:900px){.control-bar{right:68px!important;left:10px!important;top:10px!important;padding:8px 16px!important}.menu-toggle-btn{top:10px!important;right:10px!important;width:38px!important;height:38px!important}.bottom-bar{left:10px!important;right:10px!important;bottom:10px!important;padding:8px 16px!important}}.permanent-progress-bar{position:absolute;bottom:0;left:0;height:3px;background:linear-gradient(to right,var(--accent),var(--accent-hover));z-index:1000;width:0%;transition:width .2s ease,background .3s;box-shadow:0 0 6px var(--accent-glow);pointer-events:none}