.file-upload-container{border-radius:20px;padding:2.5rem;text-align:center;cursor:pointer;transition:all .2s ease-in-out;box-shadow:inset 7px 7px 14px #bebebe,inset -7px -7px 14px #fff}.file-upload-container:hover{background:#d4d4d4}.file-input{display:none}.file-label{color:#5a5a5a;font-weight:500}.file-list-ul{list-style:none;padding:0 10px 0 0;margin-top:1rem;max-height:140px;overflow-y:auto}.file-list-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;border-radius:12px;margin-bottom:.75rem;font-size:.9rem;background:#e0e0e0;box-shadow:5px 5px 10px #bebebe,-5px -5px 10px #fff}.file-name{color:#5a5a5a;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-right:1rem}.remove-file-button{height:30px;width:30px;border-radius:50%;background:#e0e0e0;border:none;display:flex;align-items:center;justify-content:center;color:#9a9a9a;font-size:1.2rem;font-weight:700;cursor:pointer;line-height:1;transition:all .2s ease-in-out;box-shadow:inset 3px 3px 6px #bebebe,inset -3px -3px 6px #fff}.remove-file-button:hover{color:#e66;box-shadow:inset 4px 4px 8px #bebebe,inset -4px -4px 8px #fff}:root{--background-color: #e0e0e0;--light-shadow: #ffffff;--dark-shadow: #bebebe;--text-color: #5a5a5a;--primary-color: #007bff}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--background-color);margin:0;display:flex;justify-content:center;align-items:center;min-height:100vh}.app-container{width:100%;max-width:500px;padding:2.5rem;border-radius:30px;background:var(--background-color);box-shadow:10px 10px 20px var(--dark-shadow),-10px -10px 20px var(--light-shadow);text-align:center}.app-header h1{margin:0;color:var(--text-color);font-size:2rem;font-weight:600;display:flex;align-items:center;justify-content:center;gap:10px}.app-header p{color:var(--text-color);opacity:.8;margin-bottom:2.5rem}.file-list-container{margin-top:1.5rem}.file-list-container h2{font-size:1rem;color:var(--text-color);margin-bottom:.5rem;font-weight:500}button,.download-button{border-radius:12px;border:none;cursor:pointer;font-weight:700;transition:all .2s ease-in-out;background:var(--background-color);box-shadow:6px 6px 12px var(--dark-shadow),-6px -6px 12px var(--light-shadow)}button:hover,.download-button:hover{box-shadow:4px 4px 8px var(--dark-shadow),-4px -4px 8px var(--light-shadow)}button:active,.download-button:active{box-shadow:inset 6px 6px 12px var(--dark-shadow),inset -6px -6px 12px var(--light-shadow);color:#333}button:disabled{opacity:.5;cursor:not-allowed;box-shadow:inset 4px 4px 8px var(--dark-shadow),inset -4px -4px 8px var(--light-shadow)}.combine-button{width:100%;padding:1rem;font-size:1rem;color:var(--primary-color);margin-top:1.5rem}.download-container{padding:1rem;text-align:center}.download-container h3{color:var(--text-color);font-weight:500}.download-actions{display:flex;justify-content:center;align-items:center;gap:1rem;margin-top:1.5rem}.download-button{display:inline-block;padding:1rem 1.5rem;font-size:1rem;color:#28a745;text-decoration:none}.start-over-button{padding:1rem 1.2rem;font-size:1rem;color:var(--text-color)}