:root{--color-background: #0a0a0b;--color-surface: #131316;--color-surface-hover: #1a1a1f;--color-border: #2a2a30;--color-border-hover: #3a3a42;--color-border-focus: #f7931a;--color-text-primary: #ffffff;--color-text-secondary: #a0a0a8;--color-text-muted: #606068;--color-accent: #f7931a;--color-accent-hover: #ffa733;--color-accent-glow: rgba(247, 147, 26, .3);--color-success: #00d26a;--color-success-glow: rgba(0, 210, 106, .2);--color-error: #ff4757;--color-error-glow: rgba(255, 71, 87, .2);--color-warning: #ffa502;--gradient-accent: linear-gradient(135deg, #f7931a 0%, #ffab40 100%);--gradient-surface: linear-gradient(180deg, #131316 0%, #0a0a0b 100%);--border-radius: 12px;--border-radius-lg: 16px;--border-radius-xl: 24px;--border-width: 1px;--font-mono: "SF Mono", "Fira Code", "Monaco", monospace;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 20px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 40px rgba(0, 0, 0, .5);--shadow-glow: 0 0 40px var(--color-accent-glow)}*,*: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,sans-serif;background:var(--color-background);color:var(--color-text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse at top,rgba(247,147,26,.08) 0%,transparent 50%),radial-gradient(ellipse at bottom,rgba(247,147,26,.05) 0%,transparent 50%);pointer-events:none;z-index:-1}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;letter-spacing:-.02em}h1{font-size:2.5rem}h2{font-size:1.75rem}h3{font-size:1.25rem}.container{width:100%;max-width:440px;margin:0 auto;padding:0 20px}.page{flex:1;display:flex;flex-direction:column;padding-bottom:40px;animation:fadeIn .4s ease-out}.page.page-center{padding-top:40px}.page-center{justify-content:center;align-items:center}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.card{background:var(--gradient-surface);border:var(--border-width) solid var(--color-border);border-radius:var(--border-radius-lg);padding:28px;box-shadow:var(--shadow-md);animation:slideUp .5s ease-out;position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent)}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.card-header{margin-bottom:24px;text-align:center}.card-title{font-size:1.5rem;font-weight:700;margin-bottom:8px;background:linear-gradient(135deg,#fff,#a0a0a8);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.card-description{font-size:.9rem;color:var(--color-text-secondary)}.input-group{margin-bottom:20px}.input-label{display:block;font-size:.85rem;font-weight:500;margin-bottom:8px;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.input{width:100%;background:var(--color-surface);border:var(--border-width) solid var(--color-border);border-radius:var(--border-radius);padding:14px 16px;font-size:1rem;font-family:inherit;color:var(--color-text-primary);outline:none;transition:all .3s cubic-bezier(.4,0,.2,1)}.input:hover{border-color:var(--color-border-hover);background:var(--color-surface-hover)}.input:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-glow)}.input::placeholder{color:var(--color-text-muted)}.input-mono{font-family:var(--font-mono);font-size:.9rem}.input-error{border-color:var(--color-error);box-shadow:0 0 0 3px var(--color-error-glow)}.input-hint{font-size:.75rem;color:var(--color-text-muted);margin-top:6px}.input-error-text{font-size:.75rem;color:var(--color-error);margin-top:6px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:transparent;border:var(--border-width) solid var(--color-border);border-radius:var(--border-radius);padding:14px 28px;font-size:1rem;font-weight:600;font-family:inherit;color:var(--color-text-primary);cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);text-decoration:none;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .5s}.btn:hover:before{left:100%}.btn:hover:not(:disabled){border-color:var(--color-text-primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}.btn:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--gradient-accent);border:none;color:#000;-webkit-text-fill-color:#000;font-weight:700;box-shadow:var(--shadow-glow)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 0 60px var(--color-accent-glow)}.btn-block{width:100%}.btn-sm{padding:10px 18px;font-size:.875rem}.btn-lg{padding:18px 36px;font-size:1.125rem}.balance{text-align:center;padding:32px 0;animation:fadeIn .6s ease-out .2s both}.balance-amount{font-size:3rem;font-weight:700;font-family:var(--font-mono);background:linear-gradient(135deg,#fff 0%,var(--color-accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.02em}.balance-unit{font-size:1.25rem;font-weight:600;-webkit-text-fill-color:var(--color-text-muted);margin-left:8px}.balance-sats{font-size:1.1rem;font-family:var(--font-mono);color:var(--color-text-secondary);margin-top:4px;letter-spacing:.02em}.balance-fiat{font-size:1rem;color:var(--color-text-secondary);margin-top:12px;display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}.fiat-value{font-weight:500;padding:6px 14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:20px;font-family:var(--font-mono);font-size:.9rem;transition:all .2s ease}.fiat-value:hover{border-color:var(--color-accent);background:#f7931a1a}.fiat-value.usd{color:#4ade80}.fiat-value.gbp{color:#60a5fa}.fiat-value.eur{color:#c084fc}.fiat-separator{display:none}.balance-pending{font-size:.9rem;color:var(--color-warning);margin-top:12px;padding:8px 16px;background:#ffa5021a;border-radius:20px;display:inline-block}.tx-list{list-style:none}.tx-item{display:flex;align-items:center;justify-content:space-between;padding:16px;margin:0 -16px;border-radius:var(--border-radius);cursor:pointer;transition:all .2s ease;border-bottom:1px solid var(--color-border)}.tx-item:last-child{border-bottom:none}.tx-item:hover{background:var(--color-surface-hover);transform:translate(4px)}.tx-info{display:flex;flex-direction:column;gap:4px}.tx-type{font-weight:600;font-size:.95rem}.tx-type.receive{color:var(--color-success)}.tx-type.send{color:var(--color-text-primary)}.tx-date{font-size:.8rem;color:var(--color-text-muted)}.tx-amount{text-align:right;font-family:var(--font-mono)}.tx-amount-btc{font-weight:600;font-size:.95rem}.tx-amount-btc.positive{color:var(--color-success)}.tx-amount-btc.positive:before{content:"+"}.tx-status{font-size:.75rem;color:var(--color-text-muted);margin-top:2px}.tx-status.pending{color:var(--color-warning)}.fee-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}.fee-option{background:var(--color-surface);border:var(--border-width) solid var(--color-border);border-radius:var(--border-radius);padding:14px 10px;text-align:center;cursor:pointer;transition:all .3s ease;color:var(--color-text-primary);-webkit-text-fill-color:var(--color-text-primary)}.fee-option:hover{border-color:var(--color-border-hover);transform:translateY(-2px)}.fee-option.selected{border-color:var(--color-accent);background:#f7931a26;box-shadow:0 0 20px var(--color-accent-glow)}.fee-option.selected .fee-option-label{color:var(--color-accent);-webkit-text-fill-color:var(--color-accent)}.fee-option.selected .fee-option-rate{color:var(--color-text-primary);-webkit-text-fill-color:var(--color-text-primary)}.fee-option-label{font-size:.7rem;color:var(--color-text-muted);-webkit-text-fill-color:var(--color-text-muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.05em}.fee-option-rate{font-weight:700;font-family:var(--font-mono);font-size:.95rem;color:var(--color-text-primary);-webkit-text-fill-color:var(--color-text-primary)}.address-display{text-align:center;padding:24px}.address-qr{margin-bottom:24px;padding:20px;background:#fff;border-radius:var(--border-radius-lg);display:inline-block;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{box-shadow:0 0 20px #f7931a33}50%{box-shadow:0 0 40px #f7931a66}}.address-text{font-family:var(--font-mono);font-size:.85rem;word-break:break-all;background:var(--color-surface);padding:16px;border-radius:var(--border-radius);border:1px solid var(--color-border);color:var(--color-text-secondary)}.copy-btn{margin-top:20px}.header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--color-border);background:#0a0a0bf2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0;z-index:100}.page>.header+.container,.page>.header~.container{padding-top:28px}.header-logo{font-weight:700;font-size:1.2rem;display:flex;align-items:center;gap:10px;color:var(--color-accent)}.header-actions{display:flex;gap:12px}.action-buttons{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0;animation:fadeIn .6s ease-out .3s both}.quick-links{display:flex;justify-content:center;gap:20px;margin-bottom:24px;animation:fadeIn .6s ease-out .4s both}.quick-link{display:flex;align-items:center;gap:6px;padding:8px 16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:20px;color:var(--color-text-secondary);text-decoration:none;font-size:.85rem;transition:all .2s ease}.quick-link:hover{border-color:var(--color-accent);color:var(--color-accent);transform:translateY(-2px)}.quick-link-icon{font-size:1rem}.preview-section{background:var(--color-surface);border-radius:var(--border-radius);padding:16px;margin:16px 0;border:1px solid var(--color-border)}.preview-title{font-size:.7rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:12px}.preview-row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;font-size:.9rem}.preview-row:not(:last-child){border-bottom:1px solid var(--color-border)}.preview-label{color:var(--color-text-secondary)}.preview-value{font-family:var(--font-mono);font-weight:500;color:var(--color-text-primary)}.preview-value.address{font-size:.75rem;max-width:180px;overflow:hidden;text-overflow:ellipsis}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:20px;z-index:1000;animation:fadeIn .2s ease-out}.modal{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-xl);padding:28px;max-width:400px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:modalSlide .3s cubic-bezier(.34,1.56,.64,1)}@keyframes modalSlide{0%{opacity:0;transform:scale(.95) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-title{font-size:1.35rem;font-weight:700;margin-bottom:20px;text-align:center}.modal-actions{display:flex;gap:12px;margin-top:24px}.modal-actions .btn{flex:1}.success-icon{width:72px;height:72px;border-radius:50%;background:var(--gradient-accent);color:#000;display:flex;align-items:center;justify-content:center;margin:0 auto 24px;box-shadow:var(--shadow-glow);animation:successPop .5s cubic-bezier(.34,1.56,.64,1)}@keyframes successPop{0%{transform:scale(0)}50%{transform:scale(1.1)}to{transform:scale(1)}}.error-message{background:var(--color-error-glow);border:1px solid var(--color-error);color:var(--color-error);padding:14px 18px;border-radius:var(--border-radius);font-size:.9rem;margin-bottom:20px;animation:shake .4s ease-out}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}.loading{display:flex;align-items:center;justify-content:center;gap:12px;color:var(--color-text-secondary)}.spinner{width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.divider{display:flex;align-items:center;gap:16px;margin:28px 0}.divider:before,.divider:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--color-border),transparent)}.divider-text{font-size:.75rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.1em}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.btc-symbol{font-size:4rem;margin-bottom:20px;display:inline-block;animation:float 3s ease-in-out infinite;background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 0 20px var(--color-accent-glow))}.text-center{text-align:center}.text-mono{font-family:var(--font-mono)}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.text-muted{color:var(--color-text-secondary)}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.gap-4{gap:16px}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--color-background)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-border-hover)}::selection{background:var(--color-accent);color:#000}.notification-toast{position:fixed;top:20px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:12px;padding:16px 20px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg),0 0 40px #00000080;cursor:pointer;z-index:1000;animation:slideDown .4s cubic-bezier(.16,1,.3,1);max-width:calc(100% - 40px)}.notification-toast.receive{border-color:var(--color-success);box-shadow:var(--shadow-lg),0 0 30px var(--color-success-glow)}.notification-toast.send{border-color:var(--color-accent);box-shadow:var(--shadow-lg),0 0 30px var(--color-accent-glow)}.notification-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:700;flex-shrink:0}.notification-toast.receive .notification-icon{background:var(--color-success-glow);color:var(--color-success)}.notification-toast.send .notification-icon{background:var(--color-accent-glow);color:var(--color-accent)}.notification-content{flex:1;min-width:0}.notification-title{font-weight:600;font-size:.95rem;color:var(--color-text-primary)}.notification-amount{font-family:var(--font-mono);font-size:.85rem;margin-top:2px}.notification-toast.receive .notification-amount{color:var(--color-success)}.notification-toast.send .notification-amount{color:var(--color-accent)}.notification-close{background:none;border:none;color:var(--color-text-muted);font-size:1.5rem;cursor:pointer;padding:0 4px;line-height:1;opacity:.6;transition:opacity .2s}.notification-close:hover{opacity:1}@keyframes slideDown{0%{opacity:0;transform:translate(-50%) translateY(-20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.utxo-list{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto;padding:4px}.utxo-item{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius);cursor:pointer;transition:all .2s ease}.utxo-item:hover{border-color:var(--color-border-hover);background:var(--color-surface-hover)}.utxo-item.selected{border-color:var(--color-accent);background:#f7931a1a;box-shadow:0 0 15px var(--color-accent-glow)}.utxo-item.pending{opacity:.5;cursor:not-allowed}.utxo-checkbox{flex-shrink:0}.utxo-checkbox input{width:18px;height:18px;accent-color:var(--color-accent);cursor:pointer}.utxo-info{flex:1;min-width:0}.utxo-txid{font-family:var(--font-mono);font-size:.75rem;color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis}.utxo-status{font-size:.7rem;color:var(--color-text-muted);margin-top:2px}.utxo-value{text-align:right;flex-shrink:0}.utxo-sats{font-family:var(--font-mono);font-weight:600;font-size:.9rem}.utxo-btc{font-family:var(--font-mono);font-size:.7rem;color:var(--color-text-muted)}.utxo-summary{display:flex;justify-content:space-between;align-items:center;padding:14px 0 0;margin-top:12px;border-top:1px solid var(--color-border);font-size:.9rem;font-weight:600}.output-entry{padding:16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius);margin-bottom:12px}.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.output-number{font-size:.8rem;font-weight:600;color:var(--color-accent);text-transform:uppercase;letter-spacing:.05em}.btn-remove{background:none;border:none;color:var(--color-error);font-size:1.5rem;cursor:pointer;padding:0 8px;line-height:1;opacity:.6;transition:opacity .2s}.btn-remove:hover{opacity:1}.output-actions{padding-top:8px}.address-type-badge{display:inline-block;padding:2px 8px;border-radius:10px;font-size:.65rem;font-weight:700;margin-left:8px;text-transform:uppercase;letter-spacing:.05em}.address-type-badge.p2pk{background:#9ca3af33;color:#9ca3af}.address-type-badge.p2pkh{background:#f59e0b33;color:#f59e0b}.address-type-badge.p2sh{background:#8b5cf633;color:#8b5cf6}.address-type-badge.p2wpkh{background:#3b82f633;color:#3b82f6}.address-type-badge.p2wsh{background:#06b6d433;color:#06b6d4}.address-type-badge.p2tr{background:#10b98133;color:#10b981}.address-info{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:.75rem}.address-type-label{color:var(--color-text-secondary)}.address-year{color:var(--color-text-muted)}.tx-summary{background:var(--color-surface);border-radius:var(--border-radius);overflow:hidden}.tx-summary-row{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--color-border)}.tx-summary-row:last-child{border-bottom:none}.tx-summary-row.highlight{background:#f7931a0d}.tx-summary-row.highlight span:last-child{font-weight:700;color:var(--color-accent)}.text-error{color:var(--color-error)!important}.text-warning{color:var(--color-warning)!important}.fee-reference{padding:10px 16px;background:var(--color-surface);font-size:.75rem;color:var(--color-text-muted);border-top:1px solid var(--color-border)}.learn-hero{text-align:center;padding:40px 0;animation:fadeIn .6s ease-out}.learn-hero h1{font-size:2rem;margin-bottom:12px;background:linear-gradient(135deg,#fff 0%,var(--color-accent) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.section-title{font-size:1.5rem;margin-bottom:24px;text-align:center}.analysis-result{margin-top:16px;padding:16px;background:var(--color-surface);border-radius:var(--border-radius);border:1px solid var(--color-border);animation:fadeIn .3s ease-out}.analysis-result.p2pk{border-color:#9ca3af}.analysis-result.p2pkh{border-color:#f59e0b}.analysis-result.p2sh{border-color:#8b5cf6}.analysis-result.p2wpkh{border-color:#3b82f6}.analysis-result.p2wsh{border-color:#06b6d4}.analysis-result.p2tr{border-color:#10b981}.analysis-result.invalid{border-color:var(--color-error)}.analysis-type{display:flex;align-items:center;gap:12px;margin-bottom:12px}.type-badge{display:inline-block;padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:700;letter-spacing:.05em}.type-badge.p2pk{background:#9ca3af33;color:#9ca3af}.type-badge.p2pkh{background:#f59e0b33;color:#f59e0b}.type-badge.p2sh{background:#8b5cf633;color:#8b5cf6}.type-badge.p2wpkh{background:#3b82f633;color:#3b82f6}.type-badge.p2wsh{background:#06b6d433;color:#06b6d4}.type-badge.p2tr{background:#10b98133;color:#10b981}.type-badge.invalid{background:var(--color-error-glow);color:var(--color-error)}.type-badge.small{padding:3px 8px;font-size:.65rem}.type-label{font-weight:600;color:var(--color-text-primary)}.analysis-details{background:#0003;border-radius:var(--border-radius);overflow:hidden}.analysis-row{display:flex;justify-content:space-between;padding:10px 14px;font-size:.85rem;border-bottom:1px solid var(--color-border)}.analysis-row:last-child{border-bottom:none}.analysis-row span:first-child{color:var(--color-text-secondary)}.analysis-row span:last-child{font-weight:500}.analysis-invalid{display:flex;align-items:center;gap:12px;color:var(--color-error)}.timeline-section{padding:40px 0}.timeline{position:relative;padding-left:40px}.timeline:before{content:"";position:absolute;left:15px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--color-accent),var(--color-border))}.timeline-item{position:relative;padding:20px;margin-bottom:20px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--border-radius-lg);cursor:pointer;transition:all .3s 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