:root{--color-white: #ffffff;--color-black: #000000;--color-transparent: transparent;--background: #f8fafc;--surface: var(--color-white);--surface-elevated: var(--color-white);--border: #e2e8f0;--border-light: #f1f5f9;--border-focus: #3b82f6;--text-primary: #1e293b;--text-secondary: #455060;--text-muted: #5c697c;--text-inverse: var(--color-white);--primary: #f97316;--primary-hover: #ea580c;--secondary: #6b7280;--secondary-hover: #4b5563;--success: #10b981;--success-hover: #059669;--warning: #f59e0b;--warning-hover: #d97706;--danger: #ef4444;--danger-hover: #dc2626;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius: 6px;--radius-lg: 8px;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--font-size-xs: 12px;--font-size-sm: 14px;--font-size-base: 16px;--font-size-lg: 18px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-base: 1.5;--sidebar-width: 350px}*,*:before,*:after{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Lato,sans-serif;font-size:var(--font-size-base);line-height:var(--line-height-base);color:var(--text-primary);background:var(--background);height:100vh;overflow:hidden}.app{display:flex;flex-direction:column;height:100vh}.header-left{display:flex;align-items:center;gap:var(--spacing-md)}.header-title{font-size:var(--font-size-2xl);font-weight:var(--font-weight-bold);color:var(--text-primary);margin:0}.header-center{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--text-secondary);font-size:var(--font-size-sm)}.header-stats{display:flex;align-items:center;gap:var(--spacing-xs)}.header-right{display:flex;align-items:center;gap:var(--spacing-sm)}.main-content{display:flex;flex:1;overflow:hidden}.chart-area{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--surface);position:relative}.chart-header{padding:var(--spacing-lg);border-bottom:1px solid var(--border-light)}.chart-title{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);margin:0 0 var(--spacing-xs) 0;color:var(--text-primary)}.chart-subtitle{font-size:var(--font-size-sm);color:var(--text-secondary);margin:0}.chart-container{flex:1;position:relative;overflow:hidden}.sidebar{width:var(--sidebar-width);flex-shrink:0;background:var(--surface);border-left:1px solid var(--border);display:flex;flex-direction:column;height:100vh;overflow-x:hidden;overflow-y:scroll;transition:transform .3s ease-in-out;transform:translate(0)}.sidebar--dimmed{opacity:.5}.sidebar.collapsed{display:none}.sidebar-toggle{position:absolute;top:var(--spacing-lg);right:var(--spacing-lg);z-index:1000;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:var(--spacing-sm);width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow-sm)}.sidebar-toggle:hover{background:var(--border-light);box-shadow:var(--shadow-md)}.sidebar-toggle .toggle-icon{width:20px;height:20px;color:var(--text-primary);transition:transform .3s ease}.main-content.sidebar-collapsed .sidebar-toggle .toggle-icon{transform:rotate(180deg)}.sidebar-header{padding:var(--spacing-lg);border-bottom:1px solid var(--border-light)}.sidebar-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);margin:0;color:var(--text-primary);display:flex;align-items:center;gap:var(--spacing-xs)}.sidebar-content{flex:1;padding:var(--spacing-lg) var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-xl);overflow-y:scroll;overflow-x:hidden;min-height:0;min-width:0}.btn{padding:8px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:var(--spacing-xs);text-decoration:none;background:var(--surface);color:var(--text-primary);white-space:nowrap;width:100%}.btn:hover{background:var(--border-light);border-color:var(--secondary)}.btn:focus{outline:2px solid var(--border-focus);outline-offset:2px}.btn-primary{background:var(--primary);color:var(--text-inverse);border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.btn-secondary{background:var(--surface);color:var(--text-secondary);border-color:var(--border)}.btn-icon{width:32px;height:32px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:var(--radius)}.file-input{position:absolute;opacity:0;width:0;height:0}.csv-help{font-size:var(--font-size-sm);color:var(--text-secondary);background:var(--background);padding:var(--spacing-md);border-radius:var(--radius);margin-bottom:var(--spacing-md);border:1px solid var(--border-light)}.csv-help-title{font-weight:var(--font-weight-semibold);margin-bottom:var(--spacing-xs);color:var(--text-primary)}.csv-help-title-example{font-weight:var(--font-weight-normal);color:var(--text-secondary)}.button-group{display:flex;flex-direction:column;gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.guest-list-section{flex:1;display:flex;flex-direction:column;gap:var(--spacing-sm)}.filter-toggle-group{display:flex;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.filter-toggle{flex:1;padding:var(--spacing-xs) var(--spacing-sm);border:none;background:var(--surface);color:var(--text-secondary);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:all .2s ease;border-right:1px solid var(--border)}.filter-toggle:last-child{border-right:none}.filter-toggle:hover{background:var(--border-light);color:var(--text-primary)}.filter-toggle.active{background:var(--primary);color:var(--text-inverse)}.filter-toggle.active:hover{background:var(--primary-hover)}.guest-list-header{border-bottom:1px solid var(--border);background:var(--surface-hover)}.guest-list-header>div{cursor:pointer;-webkit-user-select:none;user-select:none;transition:background .2s ease;position:relative;display:flex;align-items:center}.guest-list-header>div.sortable{cursor:pointer}.guest-list-header>div:not(.single-line-header):hover{text-decoration:underline}.guest-list-header>div.sort-active{background:var(--border-light);font-weight:600}.single-line-header{display:flex;align-items:flex-start;justify-content:start;gap:5px;flex-wrap:wrap}.header-part{cursor:pointer;display:inline-flex;align-items:center;gap:2px}.header-part:hover{text-decoration:underline}.header-part.sort-active{font-weight:600}.header-separator{color:var(--text-muted);-webkit-user-select:none;user-select:none;pointer-events:none}.sort-indicator{display:flex;align-items:flex-start;margin-left:2px;opacity:0;transition:opacity .2s ease;flex-shrink:0}.guest-list-header>div.sort-active .sort-indicator,.header-section.sort-active .sort-indicator{opacity:1}.header-part.sort-active .sort-indicator{opacity:1;display:inline-flex;align-items:flex-start}.sort-indicator svg{width:14px;height:14px;stroke-width:2}.section-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);margin:0;color:var(--text-primary)}.section-header{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-md)}.section-header.no-margin{margin-bottom:0}.section-header>.sidebar-section-title{margin:0}.btn-add-guest{padding:var(--spacing-xs) var(--spacing-sm);display:flex;align-items:center;justify-content:center;background:var(--primary);color:var(--text-inverse);border:1px solid var(--primary);border-radius:var(--radius);font-size:var(--font-size-sm);font-weight:var(--font-weight-normal);cursor:pointer;transition:all .2s ease;flex-shrink:0}.btn-add-guest:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:scale(1.05)}.btn-add-guest:focus{outline:2px solid var(--border-focus);outline-offset:2px}.guest-search{display:flex}.search-input{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border);border-radius:var(--radius);font-size:var(--font-size-sm);background:var(--surface);color:var(--text-primary);transition:border-color .2s ease}.search-input:focus{outline:none;border-color:var(--border-focus)}.search-input::placeholder{color:var(--text-muted)}.guest-list-container{--custom-field-count: 0;width:100%;flex:1;background:var(--surface);max-height:300px;overflow-y:auto;position:relative;border:1px solid var(--border-light);border-radius:var(--radius)}.guest-list-container:after{content:"";position:absolute;bottom:0;left:0;right:0;height:20px;background:linear-gradient(transparent,rgba(0,0,0,.15));pointer-events:none;opacity:0;transition:opacity .2s ease}.guest-list-container.has-overflow:after{opacity:1}.guest-list{max-height:300px;overflow-y:scroll}.guest-list-header{display:grid;grid-template-columns:1.5fr repeat(var(--custom-field-count),1fr);gap:var(--spacing-xs);position:sticky;top:0;background:var(--surface);font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);padding:12px;border-bottom:2px solid var(--border-light);z-index:1;transition:box-shadow .2s ease}.guest-list-header.has-shadow{box-shadow:0 2px 8px #00000026}.guest-item{position:relative;display:grid;grid-template-columns:1.5fr repeat(var(--custom-field-count),1fr);align-items:start;gap:var(--spacing-xs);padding:8px 12px;background:var(--background);font-size:var(--font-size-sm);color:var(--text-primary);min-height:28px;margin:0;font-weight:var(--font-weight-normal);cursor:grab;-webkit-user-select:none;user-select:none;outline:none;line-height:1.1}.guest-item:active{cursor:grabbing}.guest-item.dragging{opacity:.5}.guest-item:focus{outline:2px solid var(--border-focus);outline-offset:2px}.guest-item:nth-child(2n){background:var(--surface)}.guest-item:hover{background:var(--border-light)}.guest-item:last-child{margin-bottom:0}.guest-drag-ghost{position:fixed;pointer-events:none;z-index:1000;opacity:.8;box-shadow:var(--shadow-md)}.guest-name-cell{flex:1;display:flex;flex-direction:column;line-height:1.1;gap:0px}.guest-name{text-overflow:ellipsis;overflow:hidden;white-space:nowrap;color:var(--text-primary);cursor:inherit;-webkit-user-select:none;user-select:none;font-weight:var(--font-weight-medium)}.guest-seat-info{font-size:var(--font-size-xs);color:var(--text-muted);text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.custom-field-cell{font-size:var(--font-size-xs);color:var(--text-secondary);overflow-wrap:anywhere}.seat-button{position:absolute;top:50%;right:4px;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:24px;height:24px;border:none;border-radius:var(--radius);cursor:pointer;transition:all .2s ease;opacity:0;pointer-events:none}.guest-item:hover .seat-button{opacity:1;pointer-events:auto}.seat-button:hover{background:var(--primary-hover);transform:translateY(-50%) scale(1.05)}.seat-button:focus{outline:2px solid var(--border-focus);outline-offset:2px}.seat-button svg{width:16px;height:16px;fill:#fff}.notification{position:absolute;top:var(--spacing-lg);left:var(--spacing-lg);background:var(--surface);padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:1001;max-width:320px;transform:translate(-100%);opacity:0;transition:all .3s ease;border:1px solid var(--border);border-left:4px solid var(--success)}.notification.show{transform:translate(0);opacity:1}.notification.error{border-left-color:var(--danger)}.notification.warning{border-left-color:var(--warning)}.notification-title{font-weight:var(--font-weight-semibold);margin-bottom:var(--spacing-xs);font-size:var(--font-size-sm);color:var(--text-primary)}.notification-message{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.4}dialog .notification{position:fixed;top:var(--spacing-lg);left:var(--spacing-lg);z-index:1}.modal-dialog{padding:0;border:none;border-radius:8px;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;max-width:90vw;max-height:90vh;background:transparent}.modal-dialog::backdrop{background:rgba(0,0,0,.5);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-overlay{background:white;border-radius:8px;overflow:hidden;max-height:90vh;display:flex;flex-direction:column}.modal-container{display:flex;flex-direction:column;max-height:90vh}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid #e5e7eb;background:#f9fafb}.modal-title{margin:0;font-size:1.25rem;font-weight:600;color:#111827}.modal-close{background:none;border:none;font-size:1.5rem;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border-radius:4px;color:#6b7280;cursor:pointer;transition:all .2s}.modal-close:hover{background:#e5e7eb;color:#374151}.modal-content{flex:1;padding:1.5rem;overflow-y:auto}.modal-buttons{display:flex;gap:.75rem;justify-content:flex-end;padding:1.5rem;border-top:1px solid #e5e7eb;background:#f9fafb}.modal-btn{padding:.5rem 1rem;border:1px solid #d1d5db;border-radius:6px;background:white;color:#374151;font-weight:500;cursor:pointer;transition:all .2s}.modal-btn:hover{background:#f3f4f6;border-color:#9ca3af}.modal-btn-primary{background:#3b82f6;border-color:#3b82f6;color:#fff}.modal-btn-primary:hover{background:#2563eb;border-color:#2563eb}.modal-btn:disabled{opacity:.5;cursor:not-allowed}.edit-guest-form{margin-bottom:1rem}.edit-guest-description{margin:0 0 1rem;color:var(--text-secondary)}.form-field{margin-bottom:1rem}.form-label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-primary)}.form-input{width:100%;padding:.5rem;border:1px solid var(--border);border-radius:var(--radius);font-size:var(--font-size-sm);box-sizing:border-box}.form-input:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 2px #3b82f61a}.seating-fields{display:flex;gap:1rem;align-items:end}.seating-fields .form-field{flex:1}.error-message{margin-top:.5rem;color:var(--danger);font-size:var(--font-size-sm);display:none}.csv-preview-table-container{max-height:300px;overflow-y:auto;border:1px solid #e5e7eb;border-radius:6px;margin:1rem 0}.csv-preview-table{width:100%;border-collapse:collapse;font-size:.875rem}.csv-preview-table th,.csv-preview-table td{padding:.5rem;text-align:left;border-bottom:1px solid #e5e7eb}.csv-preview-table th{background:#f3f4f6;font-weight:600;color:#374151;position:sticky;top:0;z-index:1;border-bottom:2px solid #d1d5db}.csv-preview-table td{border-bottom:1px solid #f1f5f9}.csv-preview-table tr:nth-child(2n) td{background:#f9fafb}.header-mapping{margin:1rem 0}.header-mapping-row{display:flex;align-items:center;gap:1rem;margin-bottom:.75rem;padding:.75rem;background:#f9fafb;border-radius:6px;border:1px solid #e5e7eb}.header-mapping-label{font-weight:500;color:#374151;min-width:120px}.header-mapping-select{flex:1;padding:.5rem;border:1px solid #d1d5db;border-radius:4px;background:white}.validation-errors{margin:1rem 0;padding:1rem;background:#fef2f2;border:1px solid #fecaca;border-radius:6px}.validation-errors h4{margin:0 0 .5rem;color:#dc2626;font-size:.875rem;font-weight:600}.validation-errors ul{margin:0;padding-left:1.25rem;color:#7f1d1d;font-size:.875rem}.validation-errors li{margin-bottom:.25rem}.custom-fields-section{margin-top:auto}.sidebar-section-title{font-size:.875rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-sm);text-transform:uppercase;letter-spacing:.025em}.custom-field-inputs{margin:var(--spacing-md) 0}.custom-field-inputs .form-field{margin-bottom:var(--spacing-sm)}.custom-field-toggles{display:block}.custom-field-visibility-table{width:100%;border-collapse:collapse;font-size:.875rem}.custom-field-visibility-table th{padding:var(--spacing-xs) var(--spacing-sm);text-align:center;font-weight:600;color:var(--text-primary);border-bottom:1px solid var(--border-color)}.field-name-header{text-align:left!important;width:50%}.visibility-header{width:25%;font-size:.8rem}.custom-field-row{border-bottom:1px solid var(--border-light)}.custom-field-row:last-child{border-bottom:none}.field-name-cell{padding:var(--spacing-xs) var(--spacing-sm);color:var(--text-primary);font-weight:500}.visibility-cell{padding:var(--spacing-xs) var(--spacing-sm);text-align:center}.visibility-cell input[type=checkbox]{width:16px;height:16px;cursor:pointer}.version-management{min-width:0}.version-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--spacing-sm)}.version-title{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.025em;flex-shrink:0}.version-controls{display:flex;align-items:stretch;gap:var(--spacing-xs);min-width:0;width:100%}.version-dropdown{flex:1;min-width:0;padding:var(--spacing-xs) var(--spacing-xl) var(--spacing-xs) var(--spacing-sm);border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text-primary);font-size:var(--font-size-sm);cursor:pointer;transition:border-color .2s ease;text-overflow:ellipsis;white-space:nowrap;overflow:hidden;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;background-size:16px}.version-dropdown:hover{border-color:var(--secondary)}.version-dropdown:focus{outline:none;border-color:var(--border-focus)}.version-action-buttons{display:flex;align-items:center;gap:var(--spacing-xs);flex-shrink:0}.btn-version-action{width:28px;height:28px;padding:0;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text-secondary);cursor:pointer;transition:all .2s ease;flex-shrink:0}.btn-version-action:disabled{opacity:.5;cursor:not-allowed}.btn-version-action:hover{background:var(--border-light);color:var(--text-primary);transform:scale(1.05)}.btn-version-action:focus{outline:2px solid var(--border-focus);outline-offset:2px}.btn-version-action svg{width:14px;height:14px;fill:currentColor}.btn-version-action.danger:hover{background:var(--danger);color:var(--text-inverse);border-color:var(--danger)}.history-controls{display:flex;align-items:center;gap:var(--spacing-xs);margin-top:var(--spacing-sm);min-width:0;width:100%}.btn-history{padding:var(--spacing-xs) var(--spacing-sm);display:flex;align-items:center;gap:var(--spacing-xs);border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text-secondary);font-size:var(--font-size-xs);cursor:pointer;transition:all .2s ease;flex:1;min-width:0;white-space:nowrap}.btn-history:hover:not(:disabled){background:var(--border-light);color:var(--text-primary)}.btn-history:disabled{opacity:.5;cursor:not-allowed}.btn-history svg{width:12px;height:12px;fill:currentColor}.save-indicator{display:flex;align-items:center;gap:var(--spacing-xs);margin-left:auto;font-size:var(--font-size-xs);color:var(--text-muted);flex-shrink:0;min-width:fit-content}.save-spinner{width:12px;height:12px;border:2px solid var(--border-light);border-top:2px solid var(--primary);border-radius:50%;animation:spin 1s linear infinite}.save-checkmark{width:12px;height:12px;color:var(--success)}.radio-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.radio-option{display:flex;align-items:flex-start;gap:var(--spacing-sm);padding:var(--spacing-sm);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all .2s ease;background:var(--surface)}.radio-option:hover{background:var(--border-light);border-color:var(--secondary)}.radio-option:has(.radio-input:checked){border-color:var(--primary);background:var(--background)}.radio-input{width:16px;height:16px;margin:0;flex-shrink:0;cursor:pointer}.radio-option-content{flex:1;display:flex;flex-direction:column;gap:var(--spacing-xs)}.radio-label{font-weight:var(--font-weight-medium);color:var(--text-primary);font-size:var(--font-size-sm)}.radio-description{font-size:var(--font-size-xs);color:var(--text-secondary);line-height:1.4}.recenter-button{position:fixed;bottom:20px;left:20px;width:44px;height:44px;border-radius:50%;background:white;border:2px solid #e5e7eb;box-shadow:0 2px 8px #0000001a;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#6b7280;transition:all .2s ease;z-index:1000}.recenter-button:hover{background:#f3f4f6;transform:scale(1.05)}.recenter-button:active{transform:scale(.95)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}