.notification-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:2000;padding:24px;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.notification-modal.confirm .notification-icon,.notification-modal.warning .notification-icon{background:#fbbf2426;color:var(--warning)}.notification-modal.info .notification-icon{background:#3b82f626;color:#3b82f6}.notification-message{font-size:14px;color:var(--text-secondary);margin:0;line-height:1.6;white-space:pre-wrap}.loading-spinner-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}.loading-spinner{position:relative;display:inline-block}.spinner-small{width:16px;height:16px}.spinner-medium{width:32px;height:32px}.spinner-large{width:48px;height:48px}.spinner-circle{width:100%;height:100%;border:3px solid transparent;border-top-color:var(--accent-primary);border-right-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}.spinner-small .spinner-circle{border-width:2px}.spinner-large .spinner-circle{border-width:4px}.loading-text{font-size:14px;color:var(--text-secondary);margin:0;font-weight:500;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;z-index:1500;animation:fadeIn .2s ease}.loading-overlay-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:32px 48px;box-shadow:0 20px 60px #0009;display:flex;flex-direction:column;align-items:center;gap:20px}.inline-loading{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:14px}.inline-loading .loading-spinner{flex-shrink:0}@media (max-width: 480px){.notification-modal{padding:24px;max-width:100%}.notification-icon{width:56px;height:56px}.notification-title{font-size:18px}.notification-message{font-size:13px}.notification-actions{flex-direction:column}.notification-actions button{max-width:100%}.loading-overlay-content{padding:24px 32px}}.library-container{min-height:100vh;background:var(--bg-primary);color:var(--text-primary);display:flex;flex-direction:column}.library-header{display:flex;align-items:center;justify-content:space-between;padding:24px 48px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.library-brand{display:flex;align-items:center;gap:16px}.library-logo{width:48px;height:48px;object-fit:contain;filter:drop-shadow(0 2px 8px rgba(212,165,116,.3))}.library-brand-text{display:flex;flex-direction:column;gap:2px}.library-brand-title{font-size:24px;font-weight:700;letter-spacing:2px;margin:0;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.library-brand-subtitle{font-size:13px;color:var(--text-secondary);margin:0;font-weight:500}.btn-create{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;background:var(--accent-primary);color:var(--bg-primary);border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-create:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #d4a5744d}.library-subheader{display:flex;align-items:center;justify-content:space-between;padding:6px 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#3a2f1f;border-radius:8px;opacity:.3;z-index:0}.empty-icon{color:var(--accent-primary);margin-bottom:24px;opacity:.6;position:relative;z-index:1}.empty-title{font-size:24px;font-weight:600;margin:0 0 12px;color:var(--text-primary);position:relative;z-index:1}.empty-description{font-size:15px;color:var(--text-secondary);margin:0 0 32px;max-width:400px;position:relative;z-index:1}.btn-create-first{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;background:var(--accent-primary);color:var(--bg-primary);border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;position:relative;z-index:1}.btn-create-first:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 4px 16px #d4a5744d}.bookshelf-container{width:100%;animation:fadeIn .5s ease;position:relative}.bookshelf-shelf{position:relative;background:linear-gradient(180deg,#1a1410,#2d2419,#1a1410);border:2px solid #3a2f1f;border-radius:8px;padding:32px 24px 24px;box-shadow:inset 0 2px 8px #00000080,0 4px 16px #0006;overflow-x:auto;overflow-y:visible;width:100%}.bookshelf-shelf:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:repeating-linear-gradient(90deg,transparent,transparent 2px,rgba(0,0,0,.05) 2px,rgba(0,0,0,.05) 4px);pointer-events:none;border-radius:6px}.notebooks-bookshelf{display:flex!important;flex-direction:row!important;flex-wrap:nowrap!important;gap:8px;padding:8px 0;min-height:320px;align-items:flex-end;justify-content:flex-start;width:max-content;min-width:100%;position:relative}.bookshelf-shelf::-webkit-scrollbar{height:10px}.bookshelf-shelf::-webkit-scrollbar-track{background:#0003;border-radius:5px;margin:0 24px}.bookshelf-shelf::-webkit-scrollbar-thumb{background:var(--accent-primary);border-radius:5px}.bookshelf-shelf::-webkit-scrollbar-thumb:hover{background:var(--accent-hover)}.book-spine{width:60px;min-width:60px;max-width:60px;height:280px;background:linear-gradient(90deg,var(--notebook-color) 0%,var(--notebook-color) 70%,rgba(0,0,0,.2) 100%);border:1px solid rgba(0,0,0,.3);border-radius:4px 4px 0 0;cursor:pointer;position:relative;display:flex;flex-direction:column;align-items:center;padding:16px 8px;gap:12px;flex-shrink:0!important;flex-grow:0!important;transition:all .3s ease;box-shadow:2px 0 8px #0000004d,inset -1px 0 2px #ffffff1a,inset 1px 0 2px #0000004d;float:none;margin:0}.book-spine:before{content:"";position:absolute;left:-2px;top:0;width:2px;height:100%;background:linear-gradient(180deg,#00000080,#0003,#00000080)}.book-spine:after{content:"";position:absolute;right:0;top:0;width:1px;height:100%;background:linear-gradient(180deg,#ffffff26,#ffffff0d,#ffffff26)}.book-spine:hover{transform:translateY(-12px);box-shadow:2px -4px 16px #0006,inset -1px 0 2px #ffffff26,inset 1px 0 2px #0000004d,0 8px 20px #00000080;z-index:10}.book-actions{position:absolute;top:-48px;left:50%;transform:translate(-50%);display:flex;gap:6px;opacity:0;transition:opacity .3s ease;z-index:20;background:var(--bg-secondary);padding:6px;border-radius:8px;border:1px solid var(--border-color);box-shadow:0 4px 12px #00000080}.book-spine:hover .book-actions{opacity:1}.book-action-btn{width:32px;height:32px;border-radius:6px;background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}.book-action-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--accent-primary)}.book-action-btn.delete:hover{background:var(--error);color:#fff;border-color:var(--error)}.book-icon{font-size:28px;flex-shrink:0;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3))}.book-title-container{flex:1;display:flex;align-items:center;justify-content:center;width:100%;overflow:hidden}.book-title{writing-mode:vertical-rl;text-orientation:mixed;font-size:13px;font-weight:600;color:#fffffff2;text-shadow:0 1px 3px rgba(0,0,0,.4);letter-spacing:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-height:180px}.book-count{display:flex;flex-direction:column;align-items:center;gap:2px;flex-shrink:0}.book-count-number{font-size:16px;font-weight:700;color:#fffffff2;text-shadow:0 1px 3px rgba(0,0,0,.4)}.book-count-label{font-size:9px;font-weight:600;color:#ffffffbf;text-transform:uppercase;letter-spacing:.5px;text-shadow:0 1px 2px rgba(0,0,0,.4)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:24px;animation:fadeIn .2s ease}.modal-content{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;max-width:500px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #00000080;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:24px 24px 20px;border-bottom:1px solid var(--border-color)}.modal-title{font-size:20px;font-weight:600;margin:0;color:var(--text-primary)}.modal-close{width:36px;height:36px;border-radius:6px;background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease}.modal-close:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--accent-primary)}.modal-body{padding:24px}.modal-footer{display:flex;gap:12px;justify-content:flex-end;padding:20px 24px 24px;border-top:1px solid var(--border-color)}.form-group{margin-bottom:24px}.form-group:last-child{margin-bottom:0}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}.form-input{width:100%;padding:12px 14px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;font-size:15px;color:var(--text-primary);font-family:inherit;transition:all .2s ease}.form-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #d4a5741a}.form-input::placeholder{color:var(--text-tertiary)}.icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}.icon-button{aspect-ratio:1;background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:8px;font-size:24px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;padding:0}.icon-button:hover{border-color:var(--accent-primary);background:var(--bg-hover);transform:scale(1.05)}.icon-button.selected{border-color:var(--accent-primary);background:#d4a57426;box-shadow:0 0 0 3px #d4a5741a}.color-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}.color-button{aspect-ratio:1;border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;color:#fff;padding:0;position:relative}.color-button:hover{transform:scale(1.1);box-shadow:0 4px 12px #0000004d}.color-button.selected{border-color:#fff;box-shadow:0 0 0 3px #fff3;transform:scale(1.1)}.btn-primary{padding:10px 20px;background:var(--accent-primary);color:var(--bg-primary);border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #d4a5744d}.btn-secondary{padding:10px 20px;background:transparent;color:var(--text-primary);border:1px solid var(--border-color);border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--accent-primary)}@media (max-width: 768px){.library-header{padding:16px 20px;flex-direction:column;gap:12px;align-items:flex-start}.library-brand{width:100%;justify-content:space-between}.btn-create{padding:10px 16px;font-size:13px}.library-subheader{padding:12px}.library-title-section{padding-left:20px;padding-top:8px}.library-title{font-size:20px}.library-description{font-size:11px}.library-main{padding:24px 16px}.library-empty-state{padding:60px 20px;min-height:50vh}.empty-icon{font-size:56px}.empty-title{font-size:20px}.empty-description{font-size:14px}.btn-create-first{padding:12px 20px;font-size:14px}.bookshelf-shelf{padding:24px 16px 20px}.notebooks-bookshelf{min-height:280px}.book-spine{width:55px;height:260px}.book-spine:hover{transform:translateY(-8px)}.book-actions{top:-44px;gap:4px;padding:4px}.book-action-btn{width:36px;height:36px}.book-title{font-size:12px}.icon-grid,.color-grid{grid-template-columns:repeat(4,1fr);gap:12px}.icon-button,.color-button{min-height:48px}.modal-content{max-width:95%;margin:20px}.modal-header{padding:16px 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16px}.empty-icon{font-size:48px}.empty-title{font-size:18px}.empty-description{font-size:13px}.btn-create-first{padding:10px 18px;font-size:13px}.bookshelf-shelf{padding:20px 12px 16px}.notebooks-bookshelf{min-height:240px;gap:4px}.book-spine{width:50px;height:240px;padding:12px 6px}.book-spine:hover{transform:translateY(-6px)}.book-actions{top:-40px;gap:3px;padding:3px}.book-action-btn{width:32px;height:32px}.book-icon{font-size:24px}.book-title{font-size:11px;letter-spacing:.5px}.book-count-number{font-size:14px}.book-count-label{font-size:8px}.icon-grid,.color-grid{grid-template-columns:repeat(3,1fr);gap:10px}.icon-button,.color-button{min-height:44px}.modal-content{margin:16px}.modal-header{padding:14px 16px}.modal-title{font-size:16px}.modal-body{padding:16px}.modal-footer{padding:12px 16px}.form-input{padding:10px;font-size:13px}.btn-primary,.btn-secondary{padding:10px 16px;font-size:13px;min-width:100px}.notification-modal{max-width:92%;padding:20px}.notification-icon{width:48px;height:48px}.notification-title{font-size:16px}.notification-message{font-size:12px}.btn-danger{padding:10px 16px;font-size:13px}}.notification-overlay{z-index:2000}.notification-modal{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;max-width:420px;width:100%;padding:32px;box-shadow:0 20px 60px #0009;animation:notificationSlideIn .3s ease;display:flex;flex-direction:column;align-items:center;text-align:center;gap:20px}@keyframes notificationSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}.notification-icon{width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.notification-modal.error .notification-icon{background:#ef444426;color:var(--error)}.notification-modal.success .notification-icon{background:#4ade8026;color:var(--success)}.notification-modal.confirm .notification-icon{background:#fbbf2426;color:var(--warning)}.notification-content{display:flex;flex-direction:column;gap:8px}.notification-title{font-size:20px;font-weight:600;margin:0;color:var(--text-primary)}.notification-message{font-size:14px;color:var(--text-secondary);margin:0;line-height:1.6}.notification-actions{display:flex;gap:12px;justify-content:center;width:100%;margin-top:8px}.notification-actions button{flex:1;max-width:150px}.btn-danger{padding:10px 20px;background:var(--error);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-danger:hover{background:#dc2626;transform:translateY(-1px);box-shadow:0 4px 12px #ef44444d}.modal-content::-webkit-scrollbar{width:8px}.modal-content::-webkit-scrollbar-track{background:transparent}.modal-content::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.modal-content::-webkit-scrollbar-thumb:hover{background:var(--accent-primary)}*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0a0a0a;--bg-secondary: #121212;--bg-tertiary: #1a1a1a;--bg-hover: #262626;--border-color: #2a2a2a;--text-primary: #ececec;--text-secondary: #a3a3a3;--text-tertiary: #737373;--accent-primary: #d4a574;--accent-secondary: #c49563;--accent-tertiary: #b88552;--accent-hover: #e0b585;--gradient-primary: linear-gradient(135deg, #d4a574 0%, #c49563 100%);--gradient-secondary: linear-gradient(135deg, #1a1a1a 0%, #262626 100%);--gradient-accent: linear-gradient(135deg, #d4a574 0%, #b88552 100%);--success: #4ade80;--error: #f87171;--warning: #fbbf24;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .5);--shadow-md: 0 2px 8px rgba(0, 0, 0, .6);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .7);--shadow-xl: 0 8px 32px rgba(0, 0, 0, .8);--shadow-glow: 0 0 16px rgba(212, 165, 116, .15);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--primary-alpha: #333333;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease}@keyframes gradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}@keyframes glow{0%,to{box-shadow:0 0 16px #d4a57426}50%{box-shadow:0 0 24px #d4a57440}}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}html{background:#0a0a0a;height:100%;overflow:hidden}body{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-primary);color:var(--text-primary);line-height:1.5;overflow:hidden;height:100%;margin:0;padding:0}#root{height:100%;min-height:100vh;display:flex;flex-direction:column;position:relative;z-index:1;background:var(--bg-primary)}.app{display:flex;flex-direction:column;height:100%;min-height:100vh;overflow:hidden;background:var(--bg-primary);flex:1}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-tertiary) 100%);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-md);z-index:100;position:relative}.app-header:after{content:"";position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent 0%,var(--accent-primary) 50%,transparent 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