:root{--primary: #059669;--primary-hover: #047857;--primary-light: #D1FAE5;--primary-dark: #065F46;--black: #111827;--gray-900: #1F2937;--gray-700: #374151;--gray-500: #6B7280;--gray-300: #D1D5DB;--gray-200: #E5E7EB;--gray-100: #F3F4F6;--gray-50: #F9FAFB;--white: #FFFFFF;--warning: #F59E0B;--warning-bg: #FEF3C7;--error: #DC2626;--success: #10B981;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px -1px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1)}*{box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--gray-50);color:var(--black);margin:0;padding:0;min-height:100vh}.header{background:var(--white);border-bottom:1px solid var(--gray-200);padding:20px 0;position:sticky;top:0;z-index:100}.header-content{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.logo{display:flex;align-items:center;gap:12px}.logo-icon{width:40px;height:40px}.logo-icon img{width:100%;height:100%}.logo-text{font-size:24px;font-weight:700;color:var(--black);letter-spacing:-.5px}.logo-text span{color:var(--primary)}.header-badge{background:var(--primary-light);color:var(--primary-dark);padding:6px 12px;border-radius:20px;font-size:13px;font-weight:500}.container{max-width:1200px;margin:0 auto;padding:32px 24px}.hero{text-align:center;margin-bottom:40px}.hero h1{font-size:36px;font-weight:700;color:var(--black);margin:0 0 12px;letter-spacing:-.5px}.hero p{font-size:18px;color:var(--gray-500);margin:0}.section{background:var(--white);border-radius:16px;padding:28px;margin-bottom:24px;border:1px solid var(--gray-200);box-shadow:var(--shadow)}.section-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.section-icon{width:44px;height:44px;background:var(--primary-light);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px}.section h2{font-size:20px;font-weight:600;color:var(--black);margin:0}.section-description{color:var(--gray-500);font-size:14px;margin-bottom:20px;line-height:1.6}.section-description code{background:var(--gray-100);color:var(--primary-dark);padding:2px 8px;border-radius:6px;font-family:SF Mono,Monaco,Consolas,monospace;font-size:13px}.button-group{display:flex;gap:12px;flex-wrap:wrap}button{font-family:inherit;font-size:14px;font-weight:500;padding:12px 20px;border-radius:10px;border:none;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px}button.primary{background:var(--primary);color:var(--white)}button.primary:hover{background:var(--primary-hover);box-shadow:var(--shadow-md);transform:translateY(-1px)}button.secondary{background:var(--white);color:var(--gray-700);border:1px solid var(--gray-300)}button.secondary:hover{background:var(--gray-50);border-color:var(--gray-400)}button.outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}button.outline:hover{background:var(--primary-light)}button:disabled{background:var(--gray-200);color:var(--gray-500);cursor:not-allowed;transform:none;box-shadow:none}.drop-zone{border:2px dashed var(--gray-300);border-radius:16px;padding:48px 24px;text-align:center;cursor:pointer;transition:all .2s ease;background:var(--gray-50);margin-bottom:20px}.drop-zone:hover{border-color:var(--primary);background:var(--primary-light)}.drop-zone.dragover{border-color:var(--primary);background:var(--primary-light);border-style:solid}.drop-zone input{display:none}.drop-zone-icon{width:64px;height:64px;background:var(--white);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:28px;box-shadow:var(--shadow)}.drop-zone-title{font-size:16px;font-weight:600;color:var(--black);margin:0 0 8px}.drop-zone-subtitle{font-size:14px;color:var(--gray-500);margin:0}.drop-zone-formats{display:flex;gap:8px;justify-content:center;margin-top:16px}.format-badge{background:var(--white);color:var(--gray-700);padding:4px 12px;border-radius:6px;font-size:12px;font-weight:500;border:1px solid var(--gray-200)}#preview{overflow-x:auto;border-radius:12px;border:1px solid var(--gray-200)}table{border-collapse:collapse;width:100%;font-size:13px;table-layout:fixed}th,td{border:1px solid var(--gray-200);padding:8px 12px;text-align:left;vertical-align:top;word-wrap:break-word;overflow-wrap:break-word;white-space:normal;min-width:60px;overflow:hidden;position:relative}th{background:var(--black);color:var(--white);font-weight:600;position:sticky;top:0;white-space:nowrap;vertical-align:middle;min-width:60px;-webkit-user-select:none;user-select:none}th:first-child{background:var(--gray-900);min-width:50px;width:50px}tbody tr:nth-child(2n){background:var(--gray-50)}tbody tr:hover{background:var(--primary-light)}tbody td:first-child,tbody th:first-child{background:var(--gray-100);font-weight:500;color:var(--gray-700);text-align:center;vertical-align:middle;min-width:50px;width:50px}th .resize-handle{position:absolute;right:0;top:0;bottom:0;width:6px;cursor:col-resize;background:transparent;transition:background .2s}th .resize-handle:hover,th .resize-handle.resizing{background:var(--primary)}tbody th .row-resize-handle{position:absolute;left:0;right:0;bottom:0;height:5px;cursor:row-resize;background:transparent;transition:background .2s}tbody th .row-resize-handle:hover,tbody th .row-resize-handle.resizing{background:var(--primary)}body.col-resizing{cursor:col-resize!important;-webkit-user-select:none;user-select:none}body.row-resizing{cursor:row-resize!important;-webkit-user-select:none;user-select:none}body.col-resizing *,body.row-resizing *{cursor:inherit!important}.stats{background:var(--primary-light);padding:16px 20px;border-radius:12px;margin-bottom:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px}.stat-item{text-align:center}.stat-value{font-size:24px;font-weight:700;color:var(--primary-dark)}.stat-label{font-size:12px;color:var(--gray-700);text-transform:uppercase;letter-spacing:.5px}.warnings{background:var(--warning-bg);padding:16px 20px;border-radius:12px;margin-bottom:20px;border-left:4px solid var(--warning)}.warnings-title{font-weight:600;color:var(--gray-900);margin:0 0 8px;display:flex;align-items:center;gap:8px}.warnings ul{margin:0;padding-left:20px;color:var(--gray-700)}.warnings li{margin:4px 0}.sheet-tabs{display:flex;gap:4px;margin-bottom:16px;flex-wrap:wrap;background:var(--gray-100);padding:4px;border-radius:12px}.sheet-tab{padding:10px 18px;background:transparent;border:none;border-radius:8px;cursor:pointer;font-size:13px;font-weight:500;color:var(--gray-600);transition:all .2s ease}.sheet-tab:hover{background:var(--white);color:var(--black)}.sheet-tab.active{background:var(--white);color:var(--primary);box-shadow:var(--shadow-sm)}.console{background:var(--gray-900);border-radius:12px;overflow:hidden}.console-header{background:var(--black);padding:12px 16px;display:flex;align-items:center;gap:8px}.console-dot{width:12px;height:12px;border-radius:50%}.console-dot.red{background:#ef4444}.console-dot.yellow{background:#f59e0b}.console-dot.green{background:#10b981}.console-title{color:var(--gray-400);font-size:13px;font-weight:500;margin-left:8px}#log{font-family:SF Mono,Monaco,Consolas,monospace;font-size:12px;color:var(--gray-300);padding:16px;max-height:200px;overflow-y:auto;line-height:1.6}#log .error{color:#f87171}#log .success{color:#34d399}#log .info{color:#60a5fa}.footer{text-align:center;padding:32px 24px;color:var(--gray-500);font-size:14px}.footer a{color:var(--primary);text-decoration:none}.footer a:hover{text-decoration:underline}.preview-info{color:var(--gray-500);font-size:13px;margin-top:12px;padding:12px;background:var(--gray-50);border-radius:8px;text-align:center}.empty-state{text-align:center;padding:40px 20px;color:var(--gray-500)}.empty-state-icon{font-size:48px;margin-bottom:16px}td.selected{outline:2px solid var(--primary);outline-offset:-2px;background-color:var(--primary-light)!important}th.col-selected,th.row-selected{background:var(--primary)!important;color:#fff}td.col-selected,td.row-selected{background-color:#05966926!important}td.col-selected.row-selected{background-color:#05966940!important}thead th:not(:first-child){cursor:pointer}tbody th{cursor:pointer}td.editing{padding:0;overflow:visible;position:relative}td.editing input{position:absolute;left:0;top:0;min-width:100%;width:auto;height:100%;min-height:32px;border:none;padding:8px 12px;font-size:inherit;font-family:inherit;background:var(--white);outline:2px solid var(--primary);box-sizing:border-box;z-index:10}td.modified:after{content:"";position:absolute;top:2px;right:2px;width:6px;height:6px;background:var(--primary);border-radius:50%}tbody td:not(:first-child){cursor:cell}td.has-comment:before{content:"";position:absolute;top:0;right:0;width:0;height:0;border-style:solid;border-width:0 8px 8px 0;border-color:transparent #F59E0B transparent transparent}.edit-hint{color:var(--gray-500);font-size:12px;margin-top:8px;text-align:center}.edit-hint kbd{background:var(--gray-200);padding:2px 6px;border-radius:4px;font-family:inherit;font-size:11px}.context-menu{position:fixed;background:var(--white);border:1px solid var(--gray-200);border-radius:8px;box-shadow:var(--shadow-lg);min-width:180px;z-index:1000;padding:4px 0;display:none}.context-menu.visible{display:block}.context-menu-item{display:flex;align-items:center;gap:10px;padding:8px 14px;cursor:pointer;font-size:13px;color:var(--gray-700);transition:background .15s}.context-menu-item:hover{background:var(--gray-100)}.context-menu-item.disabled{color:var(--gray-400);cursor:not-allowed}.context-menu-item.disabled:hover{background:transparent}.context-menu-item .icon{width:16px;text-align:center;font-size:14px}.context-menu-item .shortcut{margin-left:auto;font-size:11px;color:var(--gray-400)}.context-menu-divider{height:1px;background:var(--gray-200);margin:4px 0}.context-menu-submenu{position:relative}.context-menu-submenu:after{content:"›";margin-left:auto;font-size:14px;color:var(--gray-400)}.context-menu-submenu .submenu{position:absolute;left:100%;top:-4px;background:var(--white);border:1px solid var(--gray-200);border-radius:8px;box-shadow:var(--shadow-lg);min-width:140px;padding:4px 0;display:none}.context-menu-submenu:hover .submenu{display:block}.color-picker-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;padding:8px}.color-swatch{width:20px;height:20px;border-radius:4px;cursor:pointer;border:1px solid var(--gray-200);transition:transform .1s,box-shadow .1s}.color-swatch:hover{transform:scale(1.15);box-shadow:var(--shadow)}.color-swatch.no-color{background:linear-gradient(135deg,#fff 45%,#ef4444,#fff 55%)}.comment-tooltip{position:fixed;background:#fef3c7;border:1px solid #F59E0B;border-radius:6px;padding:8px 12px;font-size:12px;max-width:250px;z-index:999;box-shadow:var(--shadow-md);display:none}.comment-tooltip.visible{display:block}.comment-tooltip-author{font-weight:600;color:var(--gray-700);margin-bottom:4px}.comment-tooltip-text{color:var(--gray-600);line-height:1.4}th .filter-btn{position:absolute;right:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;background:transparent;border:none;cursor:pointer;opacity:.6;font-size:10px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:3px;transition:all .15s}th .filter-btn:hover{opacity:1;background:#fff3}th .filter-btn.active{opacity:1;background:var(--primary);color:#fff}th:first-child .filter-btn{display:none}.filter-dropdown{position:fixed;background:var(--white);border:1px solid var(--gray-200);border-radius:8px;box-shadow:var(--shadow-lg);min-width:200px;max-width:280px;z-index:1001;display:none}.filter-dropdown.visible{display:block}.filter-dropdown-header{padding:12px;border-bottom:1px solid var(--gray-200);display:flex;align-items:center;justify-content:space-between}.filter-dropdown-title{font-weight:600;font-size:13px;color:var(--gray-700)}.filter-dropdown-clear{font-size:12px;color:var(--primary);cursor:pointer;background:none;border:none;padding:4px 8px}.filter-dropdown-clear:hover{text-decoration:underline}.filter-search{padding:8px 12px;border-bottom:1px solid var(--gray-200)}.filter-search input{width:100%;padding:6px 10px;border:1px solid var(--gray-300);border-radius:6px;font-size:12px;outline:none}.filter-search input:focus{border-color:var(--primary)}.filter-options{max-height:200px;overflow-y:auto;padding:8px 0}.filter-option{display:flex;align-items:center;gap:8px;padding:6px 12px;cursor:pointer;font-size:12px;color:var(--gray-700);transition:background .15s}.filter-option:hover{background:var(--gray-100)}.filter-option input[type=checkbox]{accent-color:var(--primary)}.filter-option-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.filter-option-count{color:var(--gray-400);font-size:11px}.filter-dropdown-footer{padding:8px 12px;border-top:1px solid var(--gray-200);display:flex;gap:8px}.filter-dropdown-footer button{flex:1;padding:6px 12px;font-size:12px;border-radius:6px}tr.filtered-out{display:none!important}th.has-filter:after{content:"";position:absolute;top:4px;right:4px;width:6px;height:6px;background:var(--primary);border-radius:50%}.toolbar-row{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:12px;padding:12px;background:var(--gray-100);border-radius:8px}.search-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;width:100%}.toolbar-input{padding:8px 12px;border:1px solid var(--gray-300);border-radius:6px;font-size:14px;width:150px;background:var(--white)}.toolbar-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-light)}.toolbar-btn{padding:8px 12px;border:1px solid var(--gray-300);background:var(--white);border-radius:6px;font-size:13px;cursor:pointer;transition:all .15s;white-space:nowrap}.toolbar-btn:hover{background:var(--gray-100);border-color:var(--gray-400)}.toolbar-btn:active{background:var(--gray-200)}.toolbar-group{display:flex;align-items:center;gap:6px;padding:4px 8px;background:var(--white);border-radius:6px;border:1px solid var(--gray-200)}.toolbar-label{font-size:12px;font-weight:500;color:var(--gray-500);margin-right:4px}.toolbar-hint{font-size:13px;color:var(--gray-500);margin:0;padding:8px 12px;background:var(--primary-light);border-radius:6px}.toolbar-hint strong{color:var(--primary-dark)}td.search-highlight{outline:2px solid var(--primary)!important;background-color:var(--primary-light)!important}td.search-current{outline:3px solid var(--warning)!important;background-color:var(--warning-bg)!important}td.cell-selected{background-color:#3b82f626!important}td.cell-selected.selected{background-color:#3b82f64d!important;outline:2px solid #3B82F6}#preview.selecting{-webkit-user-select:none;user-select:none}