:root{--bg-primary:#0f1113;--bg-surface:#1c1f22;--bg-card:#252830;--border-color:#2d3136;--green-primary:#00c11f;--green-hover:#00d622;--gold:#f5a623;--error:#ff4d4f;--text-primary:#fff;--text-secondary:#8a929b;--text-muted:#5a6068}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;min-height:100vh}.page-container{align-items:center;display:flex;flex-direction:column;justify-content:center;min-height:100vh;padding:20px}.card{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:16px;max-width:440px;padding:32px;width:100%}.card-header{margin-bottom:28px;text-align:center}.card-header h1{color:var(--text-primary);font-size:1.5rem;font-weight:700;margin-bottom:8px}.card-header p{color:var(--text-secondary);font-size:.9rem}.logo{margin-bottom:24px;text-align:center}.logo-text{color:var(--green-primary);font-size:2rem;font-weight:800;letter-spacing:2px}.logo-sub{color:var(--text-secondary);font-size:.75rem;letter-spacing:4px;text-transform:uppercase}.form-group{margin-bottom:18px}.form-group label{color:var(--text-secondary);display:block;font-size:.85rem;font-weight:500;margin-bottom:6px}.form-group input,.form-group select{background:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:1rem;outline:none;padding:12px 14px;transition:border-color .2s;width:100%}.form-group input:focus,.form-group select:focus{border-color:var(--green-primary)}.form-group input::-moz-placeholder{color:var(--text-muted)}.form-group input::placeholder{color:var(--text-muted)}.form-group .input-hint{color:var(--text-muted);font-size:.75rem;margin-top:4px}.monto-input{font-size:2.5rem!important;font-weight:700;letter-spacing:2px;text-align:center}.monto-label{color:var(--text-secondary);font-size:1rem;margin-bottom:4px;text-align:center}.btn{border:none;border-radius:10px;cursor:pointer;font-size:1rem;font-weight:600;margin-top:8px;padding:14px;transition:all .2s;width:100%}.btn-primary{background:var(--green-primary);color:#000}.btn-primary:hover:not(:disabled){background:var(--green-hover);transform:translateY(-1px)}.btn-primary:disabled{cursor:not-allowed;opacity:.5}.btn-secondary{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary)}.btn-secondary:hover{border-color:var(--text-secondary)}.btn-gold{background:var(--gold);color:#000}.alert{border-radius:8px;font-size:.9rem;margin-bottom:16px;padding:12px 16px}.alert-error{background:#ff4d4f26;border:1px solid var(--error);color:var(--error)}.alert-success{background:#00c11f26;border:1px solid var(--green-primary);color:var(--green-primary)}.alert-info{background:#8a929b1a;border:1px solid var(--border-color);color:var(--text-secondary)}.resultado-icon{font-size:4rem;margin-bottom:16px;text-align:center}.resultado-monto{color:var(--green-primary);font-size:2.5rem;font-weight:700;margin-bottom:8px;text-align:center}.resultado-codigo{background:var(--bg-card);border-radius:6px;color:var(--text-muted);font-family:monospace;font-size:.8rem;margin-top:16px;padding:8px;text-align:center}.divider{background:var(--border-color);height:1px;margin:20px 0}.link{color:var(--green-primary);cursor:pointer;font-size:.9rem;text-decoration:none}.link:hover{text-decoration:underline}.text-center{text-align:center}.text-muted{color:var(--text-secondary)}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.spinner{animation:spin .8s linear infinite;border:3px solid var(--border-color);border-radius:50%;border-top-color:var(--green-primary);display:inline-block;height:20px;margin-right:8px;vertical-align:middle;width:20px}@keyframes spin{to{transform:rotate(1turn)}}@media(max-width:480px){.card{border-radius:12px;padding:24px 20px}.monto-input{font-size:2rem!important}}