@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Merriweather:wght@300;400;700&family=Poppins:wght@300;400;500;600&display=swap";body{font-family:system-ui,-apple-system,sans-serif}:root{--accent: linear-gradient(90deg, #667eea, #764ba2);--accent-solid: #667eea}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;margin:0;padding:0;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;line-height:1.6}.app{min-height:100vh;max-width:1200px;margin:0 auto;padding:1rem;position:relative;display:grid;grid-template-rows:auto 1fr;gap:1rem}.app.light{background:linear-gradient(135deg,#667eea,#764ba2)}.app.dark{background:linear-gradient(135deg,#1a1a2e,#16213e)}.app.sepia{background:linear-gradient(135deg,#8b6914,#a0621a)}.app h1{text-align:center;color:#fff;margin-bottom:2rem;font-size:clamp(1.75rem,5vw,3rem);font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.3);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.upload-section{text-align:center;margin-bottom:2rem;padding:1.5rem;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;border:1px solid rgba(255,255,255,.2);transition:all .3s ease}.upload-section.drag-over{background:#fff3;border-color:#fff6;transform:scale(1.02)}#file-input{display:none}.upload-button{display:inline-flex;align-items:center;gap:.5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:.875rem 1.5rem;border-radius:50px;cursor:pointer;font-size:1rem;font-weight:600;transition:all .3s ease;border:none;box-shadow:0 4px 15px #0003;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.upload-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0000004d}.upload-icon{font-size:1.2rem}.upload-hint{margin-top:1rem;color:#fffc;font-size:.85rem;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.library-controls{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.sort-button{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:50px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #10b9814d;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;align-items:center;gap:.5rem}.sort-button:hover{background:linear-gradient(135deg,#059669,#047857);transform:translateY(-2px);box-shadow:0 6px 20px #10b98166}.auto-sort-indicator{background:#10b9811a;color:#059669;padding:.5rem 1rem;border-radius:25px;font-size:.8rem;font-weight:500;border:1px solid rgba(16,185,129,.2);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.bookshelf{min-height:300px;width:100%}.books-grid{display:grid;grid-template-columns:1fr;gap:1rem;margin-top:1.5rem;width:100%}.book-card{background:linear-gradient(145deg,#fff,#f0f0f0);border-radius:12px;padding:0;box-shadow:0 6px 24px #0000001a;border:1px solid rgba(255,255,255,.2);overflow:hidden;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;height:220px;width:100%;position:relative}.book-card:hover{box-shadow:0 8px 32px #00000026}.delete-button{position:absolute;top:8px;right:8px;background:#dc2626e6;border:none;border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center;font-size:.75rem;cursor:pointer;z-index:10;opacity:0;transition:all .2s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);box-shadow:0 2px 8px #0003}.book-card:hover .delete-button{opacity:1}.delete-button:hover{background:#b91c1cf2;transform:scale(1.1);box-shadow:0 3px 12px #0000004d}.book-cover-placeholder{background:linear-gradient(135deg,#e2e8f0,#cbd5e1);height:140px;display:flex;align-items:center;justify-content:center;position:relative;border-bottom:1px solid rgba(0,0,0,.1)}.book-cover-placeholder:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#667eea,#764ba2)}.book-icon{font-size:2.5rem;opacity:.6;color:#64748b}.book-info{padding:1rem;flex:1;display:flex;flex-direction:column;justify-content:space-between}.book-title{font-weight:600;color:#1e293b;font-size:1rem;line-height:1.4;margin-bottom:.5rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.book-meta{display:flex;justify-content:space-between;align-items:center;gap:.5rem;flex-wrap:wrap}.book-size{font-size:.8rem;color:#64748b;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.book-pages{font-size:.75rem;color:#94a3b8;font-weight:500;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.empty-state{text-align:center;padding:3rem 1rem;color:#fff;grid-column:1 / -1}.empty-animation{margin-bottom:1.5rem;display:flex;justify-content:center}.empty-state h2{font-size:clamp(1.5rem,4vw,2rem);font-weight:600;margin-bottom:1rem;text-shadow:0 2px 4px rgba(0,0,0,.3);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.empty-state p{font-size:clamp(.9rem,3vw,1.1rem);opacity:.9;margin-bottom:1.5rem;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.empty-state .upload-hint{background:#ffffff1a;padding:.875rem 1.25rem;border-radius:10px;font-size:.85rem;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border:1px solid rgba(255,255,255,.2);display:inline-block;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.reader{min-height:100vh;transition:all .3s ease;position:relative;display:grid;grid-template-rows:auto auto auto 1fr;gap:1rem;padding-top:4px}.reader.light{background:#fff;color:#333}.reader.dark{background:#1a1a1a;color:#e0e0e0}.reader.sepia{background:#f4f1ea;color:#5c4b37}.scroll-progress-container{position:fixed;top:0;left:0;right:0;height:4px;background:#0000001a;z-index:1000}.scroll-progress-bar{height:100%;background:var(--accent);transform-origin:left;transition:transform .1s ease-out}.reader-header{display:flex;flex-direction:column;gap:1rem;padding:1rem 0;border-bottom:1px solid;margin-bottom:1rem}.reader.light .reader-header{border-bottom-color:#e0e0e0}.reader.dark .reader-header{border-bottom-color:#333}.reader.sepia .reader-header{border-bottom-color:#d4c4a8}.back-button{background:none;border:2px solid;padding:.75rem 1.25rem;border-radius:50px;cursor:pointer;font-size:.85rem;font-weight:500;transition:all .2s;white-space:nowrap;align-self:flex-start;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.reader.light .back-button{border-color:#667eea;color:#667eea}.reader.light .back-button:hover{background:#667eea;color:#fff}.reader.dark .back-button{border-color:#4a9eff;color:#4a9eff}.reader.dark .back-button:hover{background:#4a9eff;color:#1a1a1a}.reader.sepia .back-button{border-color:#8b6914;color:#8b6914}.reader.sepia .back-button:hover{background:#8b6914;color:#f4f1ea}.book-info{flex:1}.reader-header .book-title{font-size:clamp(1.1rem,4vw,1.5rem);font-weight:600;margin-bottom:.5rem;line-height:1.3;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.book-stats{display:flex;align-items:center;gap:.5rem;font-size:clamp(.75rem,2vw,.9rem);opacity:.7;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;flex-wrap:wrap}.controls{display:flex;flex-direction:column;gap:1rem;margin-bottom:1rem;align-items:center}.control-group{display:flex;flex-direction:column;align-items:center;gap:.5rem;width:100%;max-width:200px}.control-group label{font-weight:500;font-size:clamp(.8rem,2vw,.9rem);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.font-slider{width:100%;max-width:160px;height:6px;border-radius:3px;background:#ddd;outline:none;-webkit-appearance:none;cursor:pointer}.font-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 2px 6px #0003;transition:all .2s ease}.font-slider::-webkit-slider-thumb:hover{transform:scale(1.1);box-shadow:0 3px 8px #0000004d}.font-slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--accent);cursor:pointer;border:none;box-shadow:0 2px 6px #0003}.theme-select{padding:.75rem 1rem;border-radius:8px;border:1px solid;background:transparent;font-size:clamp(.8rem,2vw,.9rem);cursor:pointer;width:100%;max-width:160px;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.reader.light .theme-select{border-color:#ccc;color:#333}.reader.dark .theme-select{border-color:#555;color:#e0e0e0;background:#2a2a2a}.reader.sepia .theme-select{border-color:#d4c4a8;color:#5c4b37;background:#f4f1ea}.text-content{white-space:pre-wrap;line-height:1.7;height:60vh;overflow-y:auto;padding:1rem;border-radius:10px;border:1px solid;font-family:Merriweather,Georgia,Times New Roman,serif;scroll-behavior:smooth;font-weight:400;width:100%}.reader.light .text-content{border-color:#e0e0e0;background:#fafafa}.reader.dark .text-content{border-color:#333;background:#222}.reader.sepia .text-content{border-color:#d4c4a8;background:#f9f6f0}.floating-theme-toggle{position:fixed;bottom:1.5rem;right:1.5rem;width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);border:none;color:#fff;font-size:1.25rem;cursor:pointer;box-shadow:0 4px 20px #0000004d;z-index:1000;display:flex;align-items:center;justify-content:center;transition:all .3s ease}.floating-theme-toggle:hover{box-shadow:0 6px 25px #0006;transform:translateY(-2px)}.app.dark .floating-theme-toggle{background:linear-gradient(135deg,#4a9eff,#667eea)}.app.sepia .floating-theme-toggle{background:linear-gradient(135deg,#8b6914,#a0621a)}.credit-line{position:fixed;bottom:1rem;left:1rem;z-index:999;pointer-events:none}.credit-text{font-family:Poppins,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:clamp(.7rem,1.5vw,.85rem);font-weight:400;color:#fffc;text-shadow:0 1px 3px rgba(0,0,0,.3);letter-spacing:.3px;pointer-events:auto;cursor:default;transition:all .3s ease;display:inline-block;padding:.5rem .75rem;background:#0000001a;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border-radius:8px;border:1px solid rgba(255,255,255,.1)}.credit-text:hover{opacity:.7;transform:scale(1.02)}.app.light .credit-text{color:#ffffffe6;background:#00000026;border-color:#fff3}.app.dark .credit-text{color:#fffc;background:#ffffff1a;border-color:#ffffff26}.app.sepia .credit-text{color:#ffffffd9;background:#0000001f;border-color:#ffffff2e}.text-content::-webkit-scrollbar{width:6px}.text-content::-webkit-scrollbar-track{background:transparent}.reader.light .text-content::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}.reader.dark .text-content::-webkit-scrollbar-thumb{background:#555;border-radius:3px}.reader.sepia .text-content::-webkit-scrollbar-thumb{background:#d4c4a8;border-radius:3px}@media (min-width: 480px){.books-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.25rem}.book-card{height:240px}.book-cover-placeholder{height:150px}.book-icon{font-size:2.75rem}.upload-section{padding:1.75rem}.text-content{padding:1.25rem;height:65vh}.credit-line{bottom:1.25rem;left:1.25rem}}@media (min-width: 768px){.app{padding:1.25rem}.books-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.book-card{height:260px}.book-cover-placeholder{height:160px}.book-icon{font-size:3rem}.upload-section{padding:2rem;margin-bottom:2.5rem}.upload-button{padding:1rem 2rem;font-size:1.1rem}.library-controls{margin-bottom:2.5rem}.sort-button{padding:1rem 2rem;font-size:1.1rem}.controls{flex-direction:row;justify-content:center;gap:3rem;margin-bottom:1.5rem}.control-group{max-width:none;width:auto}.reader-header{flex-direction:row;align-items:flex-start;padding:1.5rem 0}.text-content{padding:1.5rem;height:70vh}.floating-theme-toggle{width:60px;height:60px;bottom:2rem;right:2rem;font-size:1.5rem}.desktop-only{display:flex}.empty-state{padding:4rem 2rem}.credit-line{bottom:1.5rem;left:1.5rem}.credit-text{font-size:.85rem;padding:.6rem .9rem}}@media (min-width: 1024px){.app{padding:1.5rem}.books-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2rem}.book-card{height:280px}.book-cover-placeholder{height:180px}.upload-section{margin-bottom:3rem}.text-content{padding:2rem}.credit-line{bottom:2rem;left:2rem}.credit-text{font-size:.9rem;padding:.7rem 1rem}}.desktop-only{display:none}@media (max-width: 479px){.credit-line{bottom:.75rem;left:.75rem}.credit-text{font-size:.65rem;padding:.4rem .6rem;border-radius:6px}}@media (prefers-reduced-motion: reduce){.credit-text{transition:none}.credit-text:hover{transform:none}}@media (prefers-contrast: high){.credit-text{background:#000c;border-color:#fffc;color:#fff}}