:root{--primary-blue:#3b82f6;--primary-text:#1e293b;--secondary-text:#475569;--light-bg:#f8fafc;--border-color:#e2e8f0;--hover-bg:#f1f5f9;--shadow-sm:0 1px 3px #0000001a;--shadow-md:0 4px 6px #0000001a;--error-red:#dc2626;--error-bg:#dc26261a;--error-active:#dc262633}*{box-sizing:border-box;margin:0;padding:0}body,html{box-sizing:border-box;height:100%;margin:0;padding:0;overflow:hidden}.body{background-color:var(--light-bg);flex-direction:column;align-items:center;width:100%;height:calc(100vh - 3.75rem);padding:1rem;display:flex}.main-area{width:100%;max-width:1920px;height:100%;box-shadow:var(--shadow-sm);background-color:#fff;border-radius:.75rem;flex-direction:row;align-items:stretch;gap:1rem;padding:1rem;display:flex}.body:has(.dropzone-container){background:#f4f6f8;padding:0}.main-area:has(.dropzone-container){max-width:none;box-shadow:none;background:0 0;border-radius:0;gap:0;padding:0}.pdf-area{background-color:var(--light-bg);border:2px dashed var(--border-color);border-radius:.5rem;flex-wrap:wrap;flex:1;align-content:flex-start;gap:1rem;min-width:0;height:calc(100% - 2.25rem);padding:1rem;transition:all .2s;display:flex;overflow-y:auto}.pdf-area:hover{border-color:var(--primary-blue);background-color:var(--hover-bg)}.control-area{width:24rem;min-width:24rem;max-width:24rem;box-shadow:var(--shadow-sm);border:1px solid var(--border-color);isolation:isolate;background-color:#fff;border-radius:.75rem;flex-direction:column;display:flex}.control-area.hidden{display:none}.control-title{color:var(--primary-text);text-align:center;border-bottom:1px solid var(--border-color);background-color:#fff;margin:0;padding:1.25rem;font-size:1.5rem;font-weight:600}.control-body{flex-direction:column;flex:1;gap:.5rem;min-height:0;padding:1rem;display:flex;position:relative;overflow-y:auto}.control-body:after{content:"";background-color:var(--primary-blue);opacity:0;pointer-events:none;height:2px;transition:opacity .2s;position:absolute;left:1rem;right:1rem}.control-body.drop-active:after{opacity:1}.control-button-group{flex-direction:column;display:flex}.control-button{background-color:var(--primary-blue);color:#fff;cursor:pointer;border:none;border-radius:.375rem;justify-content:center;align-items:center;width:calc(100% - 1rem);height:3.5rem;margin:.5rem;padding:.75rem 1.5rem;font-size:large;font-weight:500;transition:all .2s;display:flex}.control-button:hover{box-shadow:var(--shadow-sm);background-color:#2563eb;transform:translateY(-1px)}.upload-hint{text-align:center;color:var(--secondary-text);padding:2rem;font-size:1.125rem}.overlay{z-index:1000;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#ffffffe6;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.spinner{border:4px solid var(--border-color);border-left-color:var(--primary-blue);border-radius:50%;width:2.5rem;height:2.5rem;animation:1s linear infinite spin}.add-range-button{background-color:var(--hover-bg);color:var(--primary-text);border:1px solid var(--border-color);cursor:pointer;border-radius:.375rem;width:100%;padding:.5rem 1rem;font-size:.875rem;transition:all .2s}.add-range-button:hover{border-color:var(--primary-blue);background-color:#fff}.merge-option{border-bottom:1px solid var(--border-color);align-items:center;padding:1rem;display:flex}.merge-option input{margin-right:.5rem}.merge-option label{color:var(--primary-text);font-size:1rem}.styled-checkbox{appearance:none;cursor:pointer;background-color:#fff;border:2px solid #e2e8f0;border-radius:.375rem;width:20px;height:20px;transition:all .2s;position:relative}.styled-checkbox:hover{border-color:var(--primary-blue)}.styled-checkbox:checked{background-color:var(--primary-blue);border-color:var(--primary-blue)}.styled-checkbox:checked:before{content:"✓";color:#fff;font-size:.875rem;font-weight:700;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}@keyframes spin{to{transform:rotate(360deg)}}@media (width<=768px){.body{padding:0}.main-area{box-shadow:none;background-color:#0000;flex-direction:column;gap:0;padding:0}.control-title,.content-container,.pdf-area{display:none}.control-area{border-radius:0;width:100%;min-width:100%;max-width:100%;height:100%}.control-body{padding:.75rem}.control-button-group{flex-direction:row}.control-button{height:3rem;margin:.75rem;font-size:medium}}.pdf-area::-webkit-scrollbar{width:8px}.control-body::-webkit-scrollbar{width:8px}.pdf-area::-webkit-scrollbar-track{background:0 0}.control-body::-webkit-scrollbar-track{background:0 0}.pdf-area::-webkit-scrollbar-thumb{background-color:var(--border-color);border:2px solid var(--light-bg);border-radius:4px}.control-body::-webkit-scrollbar-thumb{background-color:var(--border-color);border:2px solid var(--light-bg);border-radius:4px}.control-body::-webkit-scrollbar-thumb{border:2px solid #fff}@media (hover:none) and (pointer:coarse){.control-body{gap:.75rem}.control-button{min-height:3.5rem}}.page-selection-area{border:1px solid var(--border-color);background-color:var(--light-bg);border-radius:.375rem;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));width:100%;height:100%;padding:0;display:grid;overflow:hidden auto}.page-selection-area::-webkit-scrollbar{width:8px}.page-selection-area::-webkit-scrollbar-track{background:0 0}.page-selection-area::-webkit-scrollbar-thumb{background-color:var(--border-color);border:2px solid var(--light-bg);border-radius:4px}@media (width>=768px){.page-selection-area{display:none}}.control-button-group{gap:.5rem;padding:.5rem;display:flex}.control-button{flex:1;height:3rem;margin:0}.clear-button{color:var(--primary-text);border:1px solid var(--border-color);background-color:#fff}.clear-button:hover:not(:disabled){background-color:var(--hover-bg);border-color:var(--primary-blue);color:var(--primary-blue)}.clear-button:disabled{background-color:var(--light-bg);color:var(--secondary-text);cursor:not-allowed}@media (width<=768px){.control-button-group{z-index:100;background:#fff;padding:1rem;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 4px #0000001a}.control-button{height:3.5rem;font-size:1rem}}