*,:before,:after{box-sizing:border-box}*{margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:16px}body{text-rendering:optimizespeed;min-height:100vh;line-height:1.5}img,picture,video,canvas,svg{max-width:100%;display:block}input,button,textarea,select{font:inherit}button{cursor:pointer;color:inherit;background:0 0;border:none;padding:0}@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}:focus-visible{outline-offset:2px;outline:2px solid #4caf50}:focus:not(:focus-visible){outline:none}*{-webkit-user-select:text;user-select:text}button,input[type=submit],input[type=button]{-webkit-user-select:none;user-select:none}:root{--color-bg-primary:#0f172a;--color-bg-secondary:#1e293b;--color-bg-card:#1e293b;--color-bg-card-hover:#334155;--color-text-primary:#f8fafc;--color-text-secondary:#cbd5e1;--color-text-muted:#94a3b8;--color-accent-primary:#3b82f6;--color-accent-secondary:#8b5cf6;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--color-encrypt:#10b981;--color-decrypt:#f59e0b;--gradient-primary:linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-success:linear-gradient(135deg, #10b981 0%, #059669 100%);--gradient-warning:linear-gradient(135deg, #f59e0b 0%, #d97706 100%);--gradient-card:linear-gradient(135deg, #1e293b 0%, #334155 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var(--spacing-lg);border-radius:var(--border-radius-full);box-shadow:var(--shadow-md);flex-wrap:wrap;justify-content:center;display:flex}.address-display{align-items:center;gap:var(--spacing-sm);display:flex}.address-label{color:var(--color-text-muted);font-size:.875rem}.address-value{background:var(--color-bg-primary);padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--border-radius-sm);color:var(--color-accent-primary);font-family:Monaco,Courier New,monospace;font-size:.875rem}button{border-radius:var(--border-radius-md);cursor:pointer;transition:all var(--transition-normal);padding:var(--spacing-md) var(--spacing-xl);border:none;outline:none;font-family:inherit;font-size:1rem;font-weight:600}button:disabled{opacity:.5;cursor:not-allowed}.connect-button{background:var(--gradient-primary);color:#fff;padding:var(--spacing-md) var(--spacing-2xl);box-shadow:var(--shadow-lg);min-width:250px;font-size:1.125rem}.connect-button:hover:not(:disabled){box-shadow:var(--shadow-xl),var(--shadow-glow);transform:translateY(-2px)}.connect-button:active:not(:disabled){transform:translateY(0)}.disconnect-button{background:var(--color-bg-primary);color:var(--color-text-secondary);padding:var(--spacing-sm) var(--spacing-lg);border:1px solid var(--color-text-muted);font-size:.875rem}.disconnect-button:hover:not(:disabled){background:var(--color-error);color:#fff;border-color:var(--color-error)}.error-banner{background:var(--color-error);color:#fff;padding:var(--spacing-md);border-radius:var(--border-radius-md);margin-bottom:var(--spacing-lg);box-shadow:var(--shadow-md);justify-content:space-between;align-items:center;display:flex}.error-close{color:#fff;background:0 0;justify-content:center;align-items:center;width:2rem;height:2rem;padding:0;font-size:1.5rem;display:flex}.error-close:hover{background:#fff3;border-radius:50%}.main-content{gap:var(--spacing-lg);flex-direction:column;flex:1;display:flex}.card{background:var(--gradient-card);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-lg);border:1px solid #ffffff1a}.card-header{margin-bottom:var(--spacing-xl)}.card-header h2{margin-bottom:var(--spacing-sm);color:var(--color-text-primary);font-size:1.5rem}.card-description{color:var(--color-text-secondary);font-size:.95rem}.crypto-card{background:linear-gradient(135deg,#1e293b,#334155)}.form-group{margin-bottom:var(--spacing-lg)}.form-label{margin-bottom:var(--spacing-sm);color:var(--color-text-primary);font-size:.95rem;font-weight:600;display:block}.form-input{width:100%;padding:var(--spacing-md);background:var(--color-bg-primary);border-radius:var(--border-radius-md);color:var(--color-text-primary);transition:all var(--transition-fast);border:2px solid #0000;font-family:inherit;font-size:1rem}.form-input:focus{border-color:var(--color-accent-primary);outline:none;box-shadow:0 0 0 3px #3b82f61a}.form-input:disabled{opacity:.6;cursor:not-allowed}.textarea{resize:vertical;min-height:120px;font-family:Monaco,Courier New,monospace;line-height:1.5}.encrypted-output{word-break:break-all;border:2px solid #10b98133;font-size:.85rem;color:#10b981!important;background:#0a0f1a!important}.encrypted-wrapper{position:relative}.copy-button{top:var(--spacing-sm);right:var(--spacing-sm);background:var(--color-accent-primary);color:#fff;border-radius:var(--border-radius-sm);justify-content:center;align-items:center;width:2.5rem;height:2.5rem;padding:0;font-size:1.25rem;display:flex;position:absolute}.copy-button:hover{background:var(--color-success);transform:scale(1.1)}.input-hint{margin-top:var(--spacing-xs);color:var(--color-text-muted);text-align:right;font-size:.75rem}.crypto-buttons{gap:var(--spacing-md);margin-bottom:var(--spacing-lg);grid-template-columns:1fr 1fr 1fr;display:grid}.crypto-button{padding:var(--spacing-md);border-radius:var(--border-radius-md);box-shadow:var(--shadow-md);font-size:1rem}.encrypt-button{background:var(--gradient-success);color:#fff}.encrypt-button:hover:not(:disabled){box-shadow:var(--shadow-lg);transform:translateY(-2px)}.decrypt-button{background:var(--gradient-warning);color:#fff}.decrypt-button:hover:not(:disabled){box-shadow:var(--shadow-lg);transform:translateY(-2px)}.clear-button{background:var(--color-bg-primary);color:var(--color-text-secondary);border:1px solid var(--color-text-muted)}.clear-button:hover:not(:disabled){background:var(--color-error);color:#fff;border-color:var(--color-error)}.error-message{border:1px solid 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#ffffff1a;max-width:600px}.welcome-icon{margin-bottom:var(--spacing-lg);font-size:5rem;animation:2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.05)}}.welcome-card h2{margin-bottom:var(--spacing-md);font-size:1.75rem}.welcome-card>p{color:var(--color-text-secondary);margin-bottom:var(--spacing-2xl);line-height:1.7}.features-grid{gap:var(--spacing-lg);margin-top:var(--spacing-2xl);grid-template-columns:repeat(2,1fr);display:grid}.feature{background:var(--color-bg-primary);padding:var(--spacing-lg);border-radius:var(--border-radius-md);transition:all var(--transition-normal)}.feature:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}.feature-icon{margin-bottom:var(--spacing-sm);font-size:2.5rem;display:block}.feature h3{margin-bottom:var(--spacing-xs);color:var(--color-text-primary);font-size:1.125rem}.feature p{color:var(--color-text-muted);font-size:.875rem}.footer{text-align:center;padding:var(--spacing-2xl) var(--spacing-md);margin-top:var(--spacing-2xl);color:var(--color-text-muted);border-top:1px solid #ffffff1a;font-size:.875rem}.footer p{margin-bottom:var(--spacing-sm)}.footer strong{color:var(--color-accent-primary)}.footer-note{color:var(--color-success);font-size:.8rem}@media (width<=768px){.container{padding:var(--spacing-sm)}.header{padding:var(--spacing-lg) var(--spacing-sm)}.header h1{font-size:1.5rem}.header-icon{font-size:3rem}.subtitle{font-size:.9rem}.card{padding:var(--spacing-lg)}.crypto-buttons{gap:var(--spacing-sm);grid-template-columns:1fr}.connect-button{width:100%;min-width:auto}.connected-info{gap:var(--spacing-sm);flex-direction:column;width:100%}.disconnect-button{width:100%}.features-grid{gap:var(--spacing-md);grid-template-columns:1fr}.welcome-card{padding:var(--spacing-xl)}.welcome-icon{font-size:4rem}}@media (width<=480px){.header h1{font-size:1.25rem}.header-icon{font-size:2.5rem}.card-header h2{font-size:1.25rem}.form-label{font-size:.875rem}.form-input{padding:var(--spacing-sm);font-size:.9rem}.crypto-button{padding:var(--spacing-sm) var(--spacing-md);font-size:.9rem}button{padding:var(--spacing-sm) var(--spacing-lg);font-size:.9rem}.info-box{padding:var(--spacing-md)}.info-list li{font-size:.85rem}}@media (hover:none) and (pointer:coarse){button{min-height:44px}.crypto-button{min-height:48px}.form-input{font-size:16px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}:focus-visible{outline:2px solid var(--color-accent-primary);outline-offset:2px}.session-status{align-items:center;gap:var(--spacing-sm);color:var(--color-text-muted);margin-bottom:var(--spacing-lg);padding:var(--spacing-sm) var(--spacing-md);background:var(--color-bg-primary);border-radius:var(--border-radius-md);border:1px solid #ffffff14;font-size:.85rem;display:flex}.session-status .dot{background:var(--color-text-muted);border-radius:50%;flex-shrink:0;width:.5rem;height:.5rem}.session-status.active{color:var(--color-success)}.session-status.active .dot{background:var(--color-success);box-shadow:0 0 6px var(--color-success)}.hint-banner{justify-content:space-between;align-items:center;gap:var(--spacing-md);color:var(--color-text-secondary);padding:var(--spacing-md);border-radius:var(--border-radius-md);margin-bottom:var(--spacing-lg);background:#3b82f61a;border:1px solid #3b82f64d;flex-wrap:wrap;display:flex}.hint-banner button{padding:var(--spacing-xs) var(--spacing-md);background:var(--color-accent-primary);color:#fff;border-radius:var(--border-radius-sm);font-size:.85rem}.hint-banner button:hover:not(:disabled){background:var(--color-accent-secondary)}.error-message .error-detail{margin-top:var(--spacing-xs);color:var(--color-text-muted);font-size:.8rem;display:block}