:root{--primary: #2ea3f2;--primary-hover: #1a8fd8;--primary-light: #f8fbfe;--primary-light-hover: #eef7fd;--text-primary: #333333;--text-secondary: #666666;--text-muted: #999999;--background: #ffffff;--border: #e0e0e0;--border-light: #f0f0f0;--error: #e74c3c;--success: #27ae60;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius: 12px;--radius-sm: 8px;--transition: all .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Open Sans,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-primary);background:var(--background);line-height:1.6;min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh}.header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-light)}.logo{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--primary)}.logo-icon{width:28px;height:28px}.logo-text{font-family:Montserrat,sans-serif;font-weight:700;font-size:1.25rem;letter-spacing:-.02em}.main{flex:1;display:flex;align-items:center;justify-content:center;padding:2rem 1.5rem}.container{width:100%;max-width:480px}.title{font-family:Montserrat,sans-serif;font-size:2rem;font-weight:700;text-align:center;color:var(--text-primary);margin-bottom:.5rem}.subtitle{text-align:center;color:var(--text-secondary);font-size:.95rem;margin-bottom:2rem}.section{transition:var(--transition)}.hidden{display:none!important}.drop-zone{border:2px dashed var(--primary);border-radius:var(--radius);background:var(--primary-light);padding:3rem 2rem;text-align:center;cursor:pointer;transition:var(--transition)}.drop-zone:hover{background:var(--primary-light-hover);border-color:var(--primary-hover)}.drop-zone.drag-over{background:var(--primary-light-hover);border-style:solid;border-color:var(--primary);transform:scale(1.01)}.drop-zone-content{pointer-events:none}.drop-zone-icon{width:64px;height:64px;color:var(--primary);margin-bottom:1rem}.drop-zone-text{font-family:Montserrat,sans-serif;font-weight:600;font-size:1.1rem;color:var(--text-primary);margin-bottom:.25rem}.drop-zone-hint{font-size:.875rem;color:var(--text-muted)}.file-list{display:flex;flex-direction:column;gap:.5rem;max-height:240px;overflow-y:auto;margin-bottom:1rem}.file-list::-webkit-scrollbar{width:6px}.file-list::-webkit-scrollbar-track{background:var(--border-light);border-radius:3px}.file-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.file-list::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.file-info{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:var(--primary-light);border-radius:var(--radius-sm)}.file-icon{width:40px;height:40px;color:var(--primary);flex-shrink:0}.file-details{flex:1;min-width:0}.file-name{display:block;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{font-size:.8rem;color:var(--text-muted)}.remove-file{width:32px;height:32px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0}.remove-file:hover{background:#0000000d;color:var(--error)}.remove-file svg{width:18px;height:18px}.password-form{display:flex;flex-direction:column;gap:1rem}.input-group{display:flex;flex-direction:column;gap:.375rem}.label{font-size:.875rem;font-weight:500;color:var(--text-primary)}.input-wrapper{position:relative;display:flex;align-items:center}.input{width:100%;padding:.75rem 3rem .75rem 1rem;font-size:1rem;font-family:inherit;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--background);color:var(--text-primary);transition:var(--transition)}.input::placeholder{color:var(--text-muted)}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #2ea3f21a}.input.error{border-color:var(--error)}.toggle-password{position:absolute;right:.75rem;background:none;border:none;color:var(--text-muted);cursor:pointer;padding:.25rem;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.toggle-password:hover{color:var(--text-secondary)}.toggle-password svg{width:20px;height:20px}.error-message{font-size:.8rem;color:var(--error);margin-top:.25rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1.5rem;font-family:Montserrat,sans-serif;font-size:1rem;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);text-decoration:none}.btn-icon{width:20px;height:20px}.btn-primary{background:var(--primary);color:#fff;width:100%;margin-top:.5rem}.btn-primary:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--primary-light);color:var(--primary);border:1px solid var(--primary)}.btn-secondary:hover{background:var(--primary-light-hover)}.btn-add-more{background:transparent;color:var(--primary);border:1px dashed var(--primary);width:100%;padding:.75rem 1rem;margin-bottom:1.5rem}.btn-add-more:hover{background:var(--primary-light);border-style:solid}.processing{text-align:center;padding:3rem 2rem}.spinner{width:48px;height:48px;border:3px solid var(--border-light);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}@keyframes spin{to{transform:rotate(360deg)}}.processing-text{font-size:1rem;color:var(--text-secondary)}.processing-progress{font-size:.85rem;color:var(--text-muted);margin-top:.5rem}.success{text-align:center;padding:2rem}.success-icon{width:64px;height:64px;color:var(--success);margin-bottom:1rem}.success-title{font-family:Montserrat,sans-serif;font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:.5rem}.success-text{color:var(--text-secondary);margin-bottom:1.5rem}.error-box{text-align:center;padding:2rem;background:#fef2f2;border-radius:var(--radius)}.error-icon{width:48px;height:48px;color:var(--error);margin-bottom:1rem}.error-text{color:var(--error);margin-bottom:1.5rem}.footer{padding:1.5rem;text-align:center;border-top:1px solid var(--border-light)}.footer-text{display:inline-flex;align-items:center;gap:.5rem;font-size:.875rem;color:var(--text-secondary);margin-bottom:.5rem}.shield-icon{width:16px;height:16px;color:var(--success)}.copyright{font-size:.75rem;color:var(--text-muted)}@media(max-width:640px){.title{font-size:1.5rem}.subtitle{font-size:.875rem}.drop-zone{padding:2rem 1.5rem}.drop-zone-icon{width:48px;height:48px}}