:root{--color-primary-50: #e8f4fd;--color-primary-100: #c5e3fa;--color-primary-200: #9dcff6;--color-primary-300: #75bbf2;--color-primary-400: #57abef;--color-primary-500: #4a90d9;--color-primary-600: #3a7bc8;--color-primary-700: #2a66b7;--color-primary-800: #1a51a6;--color-primary-900: #0a3c95;--color-gray-50: #fafafa;--color-gray-100: #f5f5f5;--color-gray-200: #eeeeee;--color-gray-300: #e0e0e0;--color-gray-400: #bdbdbd;--color-gray-500: #9e9e9e;--color-gray-600: #757575;--color-gray-700: #616161;--color-gray-800: #424242;--color-gray-900: #212121;--color-success-light: #e8f5e9;--color-success: #4caf50;--color-success-dark: #388e3c;--color-warning-light: #fff8e1;--color-warning: #ff9800;--color-warning-dark: #f57c00;--color-error-light: #ffebee;--color-error: #f44336;--color-error-dark: #d32f2f;--color-info-light: #e3f2fd;--color-info: #2196f3;--color-info-dark: #1976d2;--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #f0f2f5;--bg-inverse: #212121;--text-primary: #212121;--text-secondary: #616161;--text-tertiary: #9e9e9e;--text-inverse: #ffffff;--text-link: var(--color-primary-500);--text-link-hover: var(--color-primary-700);--border-light: #e0e0e0;--border-medium: #bdbdbd;--border-dark: #9e9e9e;--border-focus: var(--color-primary-500);--font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-family-mono: "SF Mono", "Monaco", "Inconsolata", "Fira Mono", "Droid Sans Mono", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 1.875rem;--font-size-4xl: 2.25rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--space-0: 0;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 12px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--transition-fast: .15s ease;--transition-normal: .2s ease;--transition-slow: .3s ease;--z-dropdown: 100;--z-sticky: 200;--z-modal-backdrop: 300;--z-modal: 400;--z-toast: 500;--z-tooltip: 600}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family-base);font-size:var(--font-size-base);line-height:var(--line-height-normal);color:var(--text-primary);background-color:var(--bg-primary);min-height:100vh}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:var(--font-weight-semibold);line-height:var(--line-height-tight);color:var(--text-primary)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{margin-bottom:var(--space-4)}a{color:var(--text-link);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--text-link-hover)}input,textarea,select,button{font-family:inherit;font-size:inherit}:focus-visible{outline:2px solid var(--border-focus);outline-offset:2px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-gray-400);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-gray-500)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.text-xs{font-size:var(--font-size-xs)}.text-sm{font-size:var(--font-size-sm)}.text-base{font-size:var(--font-size-base)}.text-lg{font-size:var(--font-size-lg)}.text-xl{font-size:var(--font-size-xl)}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-tertiary{color:var(--text-tertiary)}.font-normal{font-weight:var(--font-weight-normal)}.font-medium{font-weight:var(--font-weight-medium)}.font-semibold{font-weight:var(--font-weight-semibold)}.font-bold{font-weight:var(--font-weight-bold)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:var(--space-1)}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.p-2{padding:var(--space-2)}.p-3{padding:var(--space-3)}.p-4{padding:var(--space-4)}.p-6{padding:var(--space-6)}.m-0{margin:0}.mt-2{margin-top:var(--space-2)}.mt-4{margin-top:var(--space-4)}.mb-2{margin-bottom:var(--space-2)}.mb-4{margin-bottom:var(--space-4)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);border:none;border-radius:var(--radius-md);font-weight:var(--font-weight-medium);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--color-primary-500);color:var(--text-inverse)}.btn-primary:hover:not(:disabled){background-color:var(--color-primary-600)}.btn-primary:active:not(:disabled){background-color:var(--color-primary-700)}.btn-secondary{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-light)}.btn-secondary:hover:not(:disabled){background-color:var(--color-gray-200);border-color:var(--border-medium)}.btn-secondary:active:not(:disabled){background-color:var(--color-gray-300)}.btn-ghost{background-color:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background-color:var(--color-gray-100);color:var(--text-primary)}.btn-ghost:active:not(:disabled){background-color:var(--color-gray-200)}.btn-danger{background-color:var(--color-error);color:var(--text-inverse)}.btn-danger:hover:not(:disabled){background-color:var(--color-error-dark)}.btn-sm{padding:var(--space-1) var(--space-3);font-size:var(--font-size-sm);height:32px}.btn-md{padding:var(--space-2) var(--space-4);font-size:var(--font-size-sm);height:40px}.btn-lg{padding:var(--space-3) var(--space-6);font-size:var(--font-size-base);height:48px}.btn-full{width:100%}.btn-icon{display:inline-flex;align-items:center;justify-content:center}.btn-icon-left{margin-right:var(--space-1)}.btn-icon-right{margin-left:var(--space-1)}.btn-loading{position:relative;color:transparent}.btn-loading .btn-text{visibility:hidden}.btn-spinner{position:absolute;width:16px;height:16px;border:2px solid currentColor;border-right-color:transparent;border-radius:var(--radius-full);animation:btn-spin .6s linear infinite}.btn-primary .btn-spinner,.btn-danger .btn-spinner{border-color:#ffffff4d;border-right-color:transparent;border-top-color:#fff}@keyframes btn-spin{to{transform:rotate(360deg)}}.input-wrapper{display:flex;flex-direction:column;gap:var(--space-1)}.input-full{width:100%}.input-label{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--text-primary)}.input-container{position:relative;display:flex;align-items:center}.input-field{width:100%;height:40px;padding:var(--space-2) var(--space-3);font-size:var(--font-size-sm);color:var(--text-primary);background-color:var(--bg-primary);border:1px solid var(--border-light);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-field::placeholder{color:var(--text-tertiary)}.input-field:hover:not(:disabled){border-color:var(--border-medium)}.input-field:focus{outline:none;border-color:var(--color-primary-500);box-shadow:0 0 0 3px var(--color-primary-50)}.input-field:disabled{background-color:var(--bg-secondary);cursor:not-allowed;opacity:.7}.input-field.has-left-icon{padding-left:40px}.input-field.has-right-icon{padding-right:40px}.input-icon{position:absolute;display:flex;align-items:center;justify-content:center;width:40px;height:100%;color:var(--text-tertiary);pointer-events:none}.input-icon-left{left:0}.input-icon-right{right:0}.input-error .input-field{border-color:var(--color-error)}.input-error .input-field:focus{box-shadow:0 0 0 3px var(--color-error-light)}.input-error-text{font-size:var(--font-size-xs);color:var(--color-error)}.input-hint{font-size:var(--font-size-xs);color:var(--text-tertiary)}.modal-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background-color:#00000080;z-index:var(--z-modal-backdrop);padding:var(--space-4);animation:modal-fade-in .2s ease}.modal{background-color:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);max-height:calc(100vh - var(--space-8));display:flex;flex-direction:column;z-index:var(--z-modal);animation:modal-slide-in .2s ease}.modal-sm{width:100%;max-width:400px}.modal-md{width:100%;max-width:500px}.modal-lg{width:100%;max-width:700px}.modal-xl{width:100%;max-width:900px}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--border-light)}.modal-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--text-primary);margin:0}.modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;background:none;border:none;border-radius:var(--radius-md);color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast)}.modal-close:hover{background-color:var(--color-gray-100);color:var(--text-primary)}.modal-body{flex:1;padding:var(--space-6);overflow-y:auto}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--space-3);padding:var(--space-4) var(--space-6);border-top:1px solid var(--border-light)}@keyframes modal-fade-in{0%{opacity:0}to{opacity:1}}@keyframes modal-slide-in{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.card{background-color:var(--bg-primary);border-radius:var(--radius-lg)}.card-default{border:1px solid var(--border-light)}.card-outlined{border:1px solid var(--border-medium)}.card-elevated{border:none;box-shadow:var(--shadow-md)}.card-padding-none{padding:0}.card-padding-sm{padding:var(--space-3)}.card-padding-md{padding:var(--space-4)}.card-padding-lg{padding:var(--space-6)}.card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-4);padding-bottom:var(--space-4);margin-bottom:var(--space-4);border-bottom:1px solid var(--border-light)}.card-header-content{flex:1;min-width:0}.card-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--text-primary);margin:0}.card-subtitle{font-size:var(--font-size-sm);color:var(--text-secondary);margin:var(--space-1) 0 0}.card-header-action{flex-shrink:0}.card-body{color:var(--text-secondary)}.card-footer{display:flex;align-items:center;gap:var(--space-3);padding-top:var(--space-4);margin-top:var(--space-4);border-top:1px solid var(--border-light)}.loader{border-radius:var(--radius-full);border-style:solid;border-right-color:transparent;animation:loader-spin .75s linear infinite}.loader-sm{width:16px;height:16px;border-width:2px}.loader-md{width:24px;height:24px;border-width:3px}.loader-lg{width:40px;height:40px;border-width:4px}.loader-primary{border-color:var(--color-primary-200);border-top-color:var(--color-primary-500)}.loader-white{border-color:#ffffff4d;border-top-color:#fff}.loader-gray{border-color:var(--color-gray-200);border-top-color:var(--color-gray-500)}@keyframes loader-spin{to{transform:rotate(360deg)}}.loading-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background-color:#ffffffe6;z-index:var(--z-modal)}.loading-content{display:flex;flex-direction:column;align-items:center;gap:var(--space-4)}.loading-message{font-size:var(--font-size-sm);color:var(--text-secondary);margin:0}.loading-centered{display:flex;align-items:center;justify-content:center;padding:var(--space-8)}.error-boundary{display:flex;align-items:center;justify-content:center;min-height:400px;padding:var(--space-8)}.error-boundary-content{text-align:center;max-width:400px}.error-boundary-icon{display:flex;align-items:center;justify-content:center;width:80px;height:80px;margin:0 auto var(--space-6);background-color:var(--color-error-light);border-radius:var(--radius-full);color:var(--color-error)}.error-boundary-title{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);color:var(--text-primary);margin:0 0 var(--space-2)}.error-boundary-message{font-size:var(--font-size-sm);color:var(--text-secondary);margin:0 0 var(--space-6)}.error-boundary-details{text-align:left;margin-bottom:var(--space-6);padding:var(--space-3);background-color:var(--bg-secondary);border-radius:var(--radius-md);font-size:var(--font-size-xs)}.error-boundary-details summary{cursor:pointer;color:var(--text-secondary);margin-bottom:var(--space-2)}.error-boundary-details pre{margin:0;padding:var(--space-2);background-color:var(--bg-tertiary);border-radius:var(--radius-sm);overflow-x:auto;color:var(--color-error);font-family:var(--font-family-mono)}.error-boundary-actions{display:flex;justify-content:center;gap:var(--space-3)}.error-message{display:flex;align-items:flex-start;gap:var(--space-3);padding:var(--space-4);background-color:var(--color-error-light);border:1px solid var(--color-error);border-radius:var(--radius-md)}.error-message-icon{flex-shrink:0;color:var(--color-error)}.error-message-content{flex:1;min-width:0}.error-message-title{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-error-dark);margin:0 0 var(--space-1)}.error-message-text{font-size:var(--font-size-sm);color:var(--color-error-dark);margin:0}.toast-container{position:fixed;bottom:var(--space-6);right:var(--space-6);display:flex;flex-direction:column;gap:var(--space-2);z-index:var(--z-toast);max-width:400px}.toast{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);animation:toast-enter .2s ease}.toast-exit{animation:toast-exit .2s ease forwards}.toast-success{background-color:var(--color-success-light);border:1px solid var(--color-success);color:var(--color-success-dark)}.toast-error{background-color:var(--color-error-light);border:1px solid var(--color-error);color:var(--color-error-dark)}.toast-warning{background-color:var(--color-warning-light);border:1px solid var(--color-warning);color:var(--color-warning-dark)}.toast-info{background-color:var(--color-info-light);border:1px solid var(--color-info);color:var(--color-info-dark)}.toast-icon{flex-shrink:0;display:flex;align-items:center;justify-content:center}.toast-message{flex:1;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);line-height:var(--line-height-normal)}.toast-close{flex-shrink:0;display:flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;opacity:.7;transition:opacity var(--transition-fast)}.toast-close:hover{opacity:1}@keyframes toast-enter{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes toast-exit{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}@media(max-width:480px){.toast-container{left:var(--space-4);right:var(--space-4);max-width:none}}.image-frame{box-sizing:border-box;border:2px solid transparent;cursor:pointer;transition:border-color .2s ease;overflow:hidden}.image-frame:hover{border-color:#4a90d980}.image-frame.selected{border-color:#4a90d9;box-shadow:0 0 0 2px #4a90d94d}.image-frame.empty{background-color:#f5f5f5;border-style:dashed;border-color:#ccc}.image-frame.empty:hover{border-color:#4a90d9;background-color:#e8f4fd}.frame-content{width:100%;height:100%;position:relative;overflow:hidden}.frame-image-container{width:100%;height:100%;overflow:hidden;position:relative}.frame-image-container img{width:100%;height:100%;object-fit:cover}.low-res-badge{position:absolute;top:8px;left:8px;width:24px;height:24px;background-color:#f39c12;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.875rem;box-shadow:0 2px 4px #0003}.frame-placeholder{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.frame-number{font-size:2rem;font-weight:700;color:#ccc}.drop-hint{font-size:.75rem;color:#999}.frame-actions{position:absolute;bottom:8px;right:8px;display:flex;gap:4px}.frame-action-btn{padding:4px 12px;border:none;border-radius:4px;background-color:#000000b3;color:#fff;font-size:.75rem;cursor:pointer;transition:background-color .2s ease}.frame-action-btn:hover{background-color:#000000e6}.frame-remove-btn{position:absolute;top:8px;right:8px;width:28px;height:28px;border:none;border-radius:50%;background-color:#0009;color:#fff;font-size:1.25rem;line-height:1;cursor:pointer;opacity:0;transition:opacity .2s ease,background-color .2s ease;display:flex;align-items:center;justify-content:center;z-index:10}.image-frame.has-image:hover .frame-remove-btn,.image-frame.selected .frame-remove-btn{opacity:1}.frame-remove-btn:hover{background-color:#e74c3c}.title-editor-display{cursor:text;padding:4px 8px;border-radius:4px;transition:background-color .2s ease;min-height:1.5em;display:inline-block}.title-editor-display:hover{background-color:#4a90d91a}.title-editor-display:focus{outline:2px solid #4a90d9;outline-offset:2px}.title-editor-display.placeholder{color:#999;font-style:italic}.title-editor-input{border:2px solid #4a90d9;border-radius:4px;padding:4px 8px;background-color:#fff;width:100%;box-sizing:border-box}.title-editor-input:focus{outline:none;box-shadow:0 0 0 3px #4a90d933}.description-editor-display{cursor:text;padding:4px 8px;border-radius:4px;transition:background-color .2s ease;min-height:2em;white-space:pre-wrap}.description-editor-display:hover{background-color:#4a90d91a}.description-editor-display:focus{outline:2px solid #4a90d9;outline-offset:2px}.description-editor-display.placeholder{color:#999;font-style:italic}.description-editor-wrapper{position:relative}.description-editor-textarea{border:2px solid #4a90d9;border-radius:4px;padding:4px 8px;background-color:#fff;width:100%;box-sizing:border-box;resize:vertical;min-height:3em;line-height:1.4}.description-editor-textarea:focus{outline:none;box-shadow:0 0 0 3px #4a90d933}.description-editor-counter{position:absolute;bottom:4px;right:8px;font-size:.75rem;color:#999}.image-page{width:100%;height:100%;background-color:#fff;display:flex;flex-direction:column;overflow:hidden}.page-header{padding:16px;text-align:center;flex-shrink:0}.cover-title{font-size:1.5rem;font-weight:700;color:#333}.month-title{font-size:1.25rem;font-weight:600;color:#333;text-transform:uppercase;letter-spacing:.1em}.page-frames{flex:1;position:relative;margin:0 16px;min-height:0}.page-footer{padding:12px 16px;text-align:center;flex-shrink:0}.page-description{font-size:.875rem;color:#666;font-style:italic;min-height:1.5em}.calendar-page{width:100%;height:100%;background-color:var(--cal-bg, white);display:flex;flex-direction:column;padding:24px;box-sizing:border-box}.calendar-header{text-align:center;margin-bottom:24px}.calendar-month-name{font-size:1.75rem;font-weight:700;margin:0;text-transform:uppercase;letter-spacing:.15em}.calendar-year{font-size:1rem}.calendar-grid{flex:1;display:flex;flex-direction:column}.calendar-row{display:flex;flex:1;min-height:0;align-items:stretch}.calendar-row.header-row{flex:none;height:auto;padding-bottom:8px;border-bottom:2px solid var(--cal-accent, #333);margin-bottom:4px}.week-number-cell{width:40px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.75rem;color:var(--cal-week-text, #999);font-weight:500;background-color:var(--cal-week-bg, transparent)}.week-number-cell.header{font-weight:700;color:var(--cal-header-text, #666);background-color:var(--cal-header-bg, transparent)}.day-header{flex:1;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem;color:var(--cal-header-text, #333);background-color:var(--cal-header-bg, transparent)}.day-header.weekend{color:var(--cal-weekend-text, #c0392b)}.day-cell{flex:1;position:relative;padding:2px 4px;font-size:.7rem;color:var(--cal-day-text, #333);border-bottom:1px solid var(--cal-border, #eee)}.day-number{position:absolute;top:2px;left:3px;font-size:.55rem;font-weight:500;line-height:1}.day-cell.empty{color:transparent}.day-cell.weekend{color:var(--cal-weekend-text, #c0392b)}.spread-view{display:flex;align-items:center;justify-content:center;transform-origin:center center;transition:transform .2s ease}.spread-container{display:flex;box-shadow:0 4px 20px 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