:root{--bg-color: #1A1A1A;--card-bg-color: #242424;--text-color: #E0E0E0;--label-color: #BDBDBD;--border-color: #424242;--primary-color: #007BFF;--primary-hover-color: #0056b3;--secondary-color: #6c757d;--secondary-hover-color: #5a6268;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}body.light-mode{--bg-color: #f4f4f9;--card-bg-color: #ffffff;--text-color: #212529;--label-color: #6c757d;--border-color: #dee2e6}*{box-sizing:border-box}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-color);margin:0;padding:2rem 1rem;display:flex;justify-content:center;transition:background-color .3s,color .3s;text-transform:uppercase}.container{width:100%;max-width:1200px}header{text-align:center;margin-bottom:2rem;position:relative}header h1{margin:0 0 .5rem;font-size:2rem;letter-spacing:1.5px}header p{margin:0;color:var(--label-color);font-size:.9rem}.theme-toggle{position:absolute;top:0;right:0;cursor:pointer;color:var(--label-color);transition:color .2s ease-in-out}.theme-toggle:hover{color:var(--text-color)}.actions{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem}.btn{padding:.75rem 1.5rem;border:none;border-radius:6px;font-size:1rem;font-weight:500;color:#fff;cursor:pointer;transition:background-color .2s ease-in-out,opacity .2s ease-in-out}.btn-primary{background-color:var(--primary-color)}.btn-primary:hover{background-color:var(--primary-hover-color)}.btn:disabled{background-color:var(--secondary-color);cursor:not-allowed;opacity:.65}.btn-secondary{background-color:var(--secondary-color)}.btn-secondary:hover:not(:disabled){background-color:var(--secondary-hover-color)}.card{background-color:var(--card-bg-color);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;margin-bottom:2rem;transition:background-color .3s,border-color .3s}.card h2{margin-top:0;margin-bottom:1.5rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color);font-size:1.25rem}.card-title-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color)}.card-title-bar h2{margin:0;padding:0;border:none}.page-nav{display:flex;gap:.5rem}.page-nav .btn{padding:.5rem 1rem;font-size:.9rem}.grid-container{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group.grid-span-2{grid-column:1 / -1}.form-group label{font-size:.9rem;color:var(--label-color);font-weight:500}.form-group label .format-hint{font-weight:400;font-size:.75rem;color:var(--secondary-color);margin-left:0;line-height:1.3}.input-wrapper{display:flex;align-items:flex-start;gap:.5rem}input[type=text],textarea{width:100%;background-color:var(--bg-color);border:1px solid var(--border-color);border-radius:4px;padding:.6rem;color:var(--text-color);font-family:var(--font-family);font-size:1rem;transition:border-color .2s,box-shadow .2s,background-color .3s,color .3s;text-transform:uppercase}input[type=text]:focus,textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff40}input[readonly]{background-color:#2c2c2c;cursor:not-allowed}body.light-mode input[readonly]{background-color:#e9ecef}textarea{resize:vertical;min-height:50px}.input-wrapper .btn-copy,.input-wrapper .btn-track{padding:.6rem .8rem;background-color:var(--secondary-color);color:#fff;border:none;border-radius:4px;cursor:pointer;transition:background-color .2s ease-in-out;flex-shrink:0;align-self:flex-start}.input-wrapper .btn-track{background-color:#17a2b8}.input-wrapper .btn-copy:hover{background-color:var(--secondary-hover-color)}.input-wrapper .btn-track:hover{background-color:#138496}.totals-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.totals-container .form-group.full-width{grid-column:1 / -1}#file-list{display:flex;flex-direction:column;gap:.5rem}.file-item{background-color:var(--bg-color);padding:.75rem;border-radius:4px;border:1px solid var(--border-color);font-size:.9rem;color:var(--text-color);transition:background-color .3s,border-color .3s}#drop-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#000000bf;z-index:1000;display:none;align-items:center;justify-content:center}body.drag-over #drop-overlay{display:flex}.drop-message{border:3px dashed var(--primary-color);border-radius:12px;padding:3rem 4rem;text-align:center;color:#fff;background-color:var(--card-bg-color);box-shadow:0 8px 32px #0000005e}.drop-message svg{margin-bottom:1rem;color:var(--primary-color)}.drop-message p{margin:0;font-size:1.2rem;font-weight:500;color:var(--text-color)}@media(max-width:900px){.grid-container{grid-template-columns:1fr}}