:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-light: #3b82f6;--color-success: #059669;--color-success-light: #d1fae5;--color-success-dark: #047857;--color-warning: #d97706;--color-warning-light: #fef3c7;--color-error: #dc2626;--color-error-light: #fee2e2;--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-border-focus: #93c5fd;--color-text: #1e293b;--color-text-secondary: #64748b;--color-text-muted: #94a3b8;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--transition: .15s 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:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5;min-height:100vh}.container{max-width:800px;margin:0 auto;padding:24px}.header{margin-bottom:24px}.header-content{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.logo{font-size:1.75rem;font-weight:700;color:var(--color-text);letter-spacing:-.025em}.badge{display:inline-flex;align-items:center;padding:6px 12px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-radius:9999px}.badge-security{background:var(--color-success-light);color:var(--color-success-dark)}.security-banner{display:flex;align-items:flex-start;gap:16px;padding:20px;background:linear-gradient(135deg,var(--color-success-light) 0%,#ecfdf5 100%);border:1px solid #a7f3d0;border-radius:var(--radius-lg);margin-bottom:32px}.security-icon{flex-shrink:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--color-success);color:#fff;border-radius:50%}.security-text p{margin:0;font-size:.9375rem;color:var(--color-success-dark)}.security-text p+p{margin-top:4px;opacity:.9}.form-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);margin-bottom:20px;overflow:hidden}.section-header{display:flex;align-items:center;gap:12px;padding:16px 20px;background:#f8fafc;border-bottom:1px solid var(--color-border)}.section-number{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--color-primary);color:#fff;font-size:.875rem;font-weight:600;border-radius:50%}.section-header h2{font-size:1rem;font-weight:600;color:var(--color-text)}.section-content{padding:20px}.form-group{margin-bottom:16px}.form-group:last-child{margin-bottom:0}.form-row{display:flex;gap:16px}.form-row .form-group{flex:1}.form-row .form-group.flex-grow{flex:2}label{display:block;font-size:.875rem;font-weight:500;color:var(--color-text);margin-bottom:6px}input[type=text],input[type=password],select,textarea{width:100%;padding:10px 14px;font-size:.9375rem;color:var(--color-text);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition),box-shadow var(--transition)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--color-border-focus);box-shadow:0 0 0 3px #3b82f61a}input::placeholder,textarea::placeholder{color:var(--color-text-muted)}textarea{resize:vertical;font-family:SF Mono,Monaco,Cascadia Code,Consolas,monospace;font-size:.8125rem;line-height:1.6}select{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:40px}.helper-text{display:block;font-size:.8125rem;color:var(--color-text-muted);margin-top:6px}.file-input-wrapper{position:relative}.file-input-wrapper input[type=file]{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer;z-index:2}.file-input-display{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--color-surface);border:1px dashed var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition),background-color var(--transition)}.file-input-wrapper:hover .file-input-display{border-color:var(--color-primary);background:#f8fafc}.file-placeholder{color:var(--color-text-muted);font-size:.9375rem}.file-input-display.has-file .file-placeholder{color:var(--color-text)}.password-input-wrapper{position:relative}.password-input-wrapper input{padding-right:44px}.toggle-password{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;padding:4px;color:var(--color-text-muted);transition:color var(--transition)}.toggle-password:hover{color:var(--color-text)}.cert-status{margin-top:16px;padding:12px 16px;border-radius:var(--radius-md);background:#f8fafc;border:1px solid var(--color-border)}.cert-status.valid{background:var(--color-success-light);border-color:#a7f3d0}.cert-status.invalid{background:var(--color-error-light);border-color:#fca5a5}.cert-info{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.875rem}.status-indicator{width:8px;height:8px;border-radius:50%;background:var(--color-text-muted)}.cert-status.valid .status-indicator{background:var(--color-success)}.cert-status.invalid .status-indicator{background:var(--color-error)}.cert-subject{font-weight:500}.cert-validity{color:var(--color-text-secondary)}.tabs{display:flex;gap:4px;padding:4px;background:#f1f5f9;border-radius:var(--radius-md);margin-bottom:16px}.tab{flex:1;padding:8px 16px;font-size:.875rem;font-weight:500;color:var(--color-text-secondary);background:transparent;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition)}.tab:hover{color:var(--color-text)}.tab.active{background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-sm)}.tab-content{display:none}.tab-content.active{display:block}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:.9375rem;font-weight:500;padding:10px 20px;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{font-size:.8125rem;padding:6px 12px}.btn-lg{font-size:1rem;padding:14px 28px}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-dark)}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:#f8fafc;border-color:var(--color-text-muted)}.form-actions{text-align:center;margin-top:8px}.form-actions .btn{min-width:200px}.results-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;margin-top:32px;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.results-section .section-header{padding:0;background:none;border:none;margin-bottom:24px}.results-section .section-header svg{color:var(--color-success)}.results-section .section-header h2{font-size:1.25rem}.results-grid{display:grid;grid-template-columns:1fr;gap:20px;margin-bottom:24px}@media (min-width: 640px){.results-grid{grid-template-columns:1fr auto}}.result-card{background:#f8fafc;border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}.result-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.result-header h3{font-size:.875rem;font-weight:600}.result-card textarea{border:none;border-radius:0;background:transparent;min-height:200px;resize:none}.qr-card{min-width:200px}.qr-container{display:flex;align-items:center;justify-content:center;padding:20px;background:#fff}.qr-container img{max-width:160px;height:auto}.signature-info{display:flex;flex-direction:column;gap:12px;padding:16px;background:#f8fafc;border-radius:var(--radius-md)}.info-item{display:flex;flex-wrap:wrap;gap:8px;font-size:.875rem}.info-label{font-weight:500;color:var(--color-text-secondary);min-width:100px}.info-value{color:var(--color-text);word-break:break-all}.info-value.mono{font-family:SF Mono,Monaco,Cascadia Code,Consolas,monospace;font-size:.8125rem}.footer{text-align:center;padding:32px 0 16px;font-size:.8125rem;color:var(--color-text-muted)}.footer p{margin:4px 0}.footer-tech{opacity:.7}.notification{position:fixed;bottom:24px;left:50%;transform:translate(-50%) translateY(100px);padding:12px 24px;background:var(--color-text);color:#fff;font-size:.9375rem;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:1000;transition:transform .3s ease}.notification.show{transform:translate(-50%) translateY(0)}.notification.error{background:var(--color-error)}.notification.success{background:var(--color-success)}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:#ffffffe6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1001}.spinner{width:48px;height:48px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay p{font-size:1rem;color:var(--color-text-secondary)}.hidden{display:none!important}@media (max-width: 640px){.container{padding:16px}.header-content{justify-content:center;text-align:center}.logo{font-size:1.5rem}.security-banner{flex-direction:column;text-align:center;align-items:center}.form-row{flex-direction:column;gap:12px}.section-content{padding:16px}.result-header{flex-direction:column;gap:12px;align-items:flex-start}.info-item{flex-direction:column;gap:4px}.info-label{min-width:auto}}.login-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:var(--color-bg);z-index:2000;transition:opacity .5s ease}.login-overlay.hidden{opacity:0;pointer-events:none}.login-card{background:var(--color-surface);padding:40px;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center;max-width:400px;width:90%}.login-icon{width:64px;height:64px;background:var(--color-primary-light);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 24px}.login-title{font-size:1.5rem;margin-bottom:8px;color:var(--color-text)}.login-subtitle{color:var(--color-text-secondary);margin-bottom:24px;font-size:.95rem}.pin-input-group{margin-bottom:24px}.pin-input{font-size:2rem;letter-spacing:.5rem;text-align:center;width:100%;padding:12px;border:2px solid var(--color-border);border-radius:var(--radius-md);margin-bottom:8px}.pin-input:focus{border-color:var(--color-primary);outline:none}.login-error{color:var(--color-error);font-size:.875rem;height:20px;opacity:0;transition:opacity .2s}.login-error.show{opacity:1}