*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333}.container{max-width:1200px;margin:0 auto;padding:2rem}header{text-align:center;color:#fff;margin-bottom:3rem;padding:2rem 0}header h1{font-size:2.5rem;margin-bottom:.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}header p{font-size:1.1rem;opacity:.9}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(500px,1fr));gap:2rem;margin-top:2rem}.feature-card{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 6px #0000001a}.feature-card h2{color:#667eea;margin-bottom:1.5rem;font-size:1.5rem;display:flex;align-items:center;gap:.5rem}.feature-card h3{color:#764ba2;margin:1.5rem 0 1rem;font-size:1.2rem}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:#555}.form-group input,.form-group textarea{width:100%;padding:.75rem;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;transition:border-color .3s}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#667eea}.form-group textarea{resize:vertical;min-height:100px}.file-input-wrapper{position:relative;overflow:hidden;display:inline-block;width:100%}.file-input-wrapper input[type=file]{font-size:100px;position:absolute;left:0;top:0;opacity:0;cursor:pointer}.file-input-label{display:block;padding:.75rem;border:2px dashed #667eea;border-radius:8px;text-align:center;cursor:pointer;transition:background-color .3s;color:#667eea;font-weight:500}.file-input-label:hover{background-color:#f0f0f0}button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;width:100%;margin-top:.5rem}button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}button:active{transform:translateY(0)}button:disabled{opacity:.6;cursor:not-allowed;transform:none}.items-list{margin-top:1.5rem}.item{background:#f8f9fa;padding:1rem;border-radius:8px;margin-bottom:.75rem;border-left:4px solid #667eea}.item h4{color:#333;margin-bottom:.5rem}.item p{color:#666;font-size:.95rem;margin-bottom:.5rem}.item small{color:#999;font-size:.85rem}.item-actions{margin-top:.5rem}.item-actions button{width:auto;padding:.5rem 1rem;font-size:.9rem;margin-right:.5rem;margin-top:0}.delete-btn{background:linear-gradient(135deg,#f093fb,#f5576c)}.file-item{display:flex;align-items:center;justify-content:space-between;background:#f8f9fa;padding:1rem;border-radius:8px;margin-bottom:.75rem;border-left:4px solid #764ba2}.file-info{flex:1}.file-info h4{color:#333;margin-bottom:.25rem}.file-info small{color:#999;font-size:.85rem}.file-actions{display:flex;gap:.5rem}.file-actions button{width:auto;padding:.5rem 1rem;font-size:.9rem;margin:0}.download-btn{background:linear-gradient(135deg,#4facfe,#00f2fe)}.error{background-color:#fee;color:#c33;padding:1rem;border-radius:8px;margin:1rem 0;border-left:4px solid #c33}.success{background-color:#efe;color:#3c3;padding:1rem;border-radius:8px;margin:1rem 0;border-left:4px solid #3c3}.loading{text-align:center;padding:2rem;color:#667eea;font-size:1.1rem}.empty-state{text-align:center;padding:2rem;color:#999;font-style:italic}
