:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a24;--bg-card: linear-gradient(135deg, #16161f 0%, #1a1a28 100%);--bg-card-hover: linear-gradient(135deg, #1c1c2a 0%, #202030 100%);--accent-gold: #d4af37;--accent-gold-light: #f4d03f;--accent-purple: #8b5cf6;--accent-purple-light: #a78bfa;--accent-teal: #14b8a6;--danger: #ef4444;--danger-light: #fca5a5;--warning: #f59e0b;--warning-light: #fcd34d;--success: #10b981;--success-light: #6ee7b7;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--border-subtle: rgba(255, 255, 255, .06);--border-light: rgba(255, 255, 255, .1);--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 rgba(212, 175, 55, .1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding:2rem;max-width:1600px;margin:0 auto;width:100%}.header{background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);padding:1rem 2rem;position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header-content{max-width:1600px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:.75rem}.logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--accent-purple) 0%,var(--accent-gold) 100%);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff}.logo-text{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent-gold) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-tabs{display:flex;gap:.5rem}.nav-tab{padding:.625rem 1.25rem;border:none;background:transparent;color:var(--text-secondary);font-family:var(--font-sans);font-size:.9rem;font-weight:500;cursor:pointer;border-radius:var(--radius-sm);transition:all .2s ease;display:flex;align-items:center;gap:.5rem}.nav-tab:hover{background:var(--bg-tertiary);color:var(--text-primary)}.nav-tab.active{background:var(--accent-purple);color:#fff}.cards-section{margin-bottom:2rem}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.section-title{font-size:1.75rem;font-weight:700;color:var(--text-primary)}.section-subtitle{color:var(--text-muted);font-size:.9rem;margin-top:.25rem}.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:1.5rem}.credit-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem;transition:all .3s ease;position:relative;overflow:hidden}.credit-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent-purple),var(--accent-gold));opacity:0;transition:opacity .3s ease}.credit-card:hover{background:var(--bg-card-hover);border-color:var(--border-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}.credit-card:hover:before{opacity:1}.credit-card.warning-30{border-color:var(--warning);box-shadow:0 0 20px #f59e0b1a}.credit-card.warning-7{border-color:var(--danger);box-shadow:0 0 20px #ef444426;animation:pulse-danger 2s infinite}@keyframes pulse-danger{0%,to{box-shadow:0 0 20px #ef444426}50%{box-shadow:0 0 30px #ef444440}}.card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:1rem}.card-issuer-badge{padding:.375rem .75rem;background:var(--bg-tertiary);border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;color:var(--accent-gold);text-transform:uppercase;letter-spacing:.5px}.card-type-badge{padding:.25rem .5rem;font-size:.7rem;border-radius:4px;font-weight:500}.card-type-badge.personal{background:#8b5cf633;color:var(--accent-purple-light)}.card-type-badge.business{background:#14b8a633;color:var(--accent-teal)}.card-main-info{margin-bottom:1rem}.card-name{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:.25rem}.card-type-name{color:var(--text-secondary);font-size:.9rem}.card-number{font-family:var(--font-mono);font-size:1.1rem;color:var(--text-muted);letter-spacing:2px;margin:1rem 0}.card-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;padding-top:1rem;border-top:1px solid var(--border-subtle)}.stat-item{display:flex;flex-direction:column;gap:.25rem}.stat-label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.stat-value{font-size:1rem;font-weight:600;color:var(--text-primary);font-family:var(--font-mono)}.stat-value.balance{color:var(--danger)}.stat-value.fee{color:var(--warning)}.alert-badge{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .5rem;border-radius:4px;font-size:.7rem;font-weight:600;margin-top:.5rem}.alert-badge.warning-30{background:#f59e0b26;color:var(--warning)}.alert-badge.warning-7{background:#ef444426;color:var(--danger)}.card-actions{display:flex;gap:.5rem;margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border-subtle)}.card-action-btn{flex:1;padding:.5rem;border:1px solid var(--border-subtle);background:transparent;color:var(--text-secondary);font-size:.8rem;font-weight:500;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:.375rem}.card-action-btn:hover{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border-light)}.card-action-btn.delete:hover{background:#ef44441a;color:var(--danger);border-color:var(--danger)}.balance-transfers{margin-top:1rem;padding:.75rem;background:#0003;border-radius:var(--radius-sm)}.bt-title{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:.5rem}.bt-item{display:flex;justify-content:space-between;align-items:center;padding:.5rem 0;border-bottom:1px solid var(--border-subtle)}.bt-item:last-child{border-bottom:none}.bt-amount{font-family:var(--font-mono);font-weight:600;color:var(--accent-purple-light)}.bt-due{font-size:.8rem;color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;border:none;border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary{background:linear-gradient(135deg,var(--accent-purple) 0%,var(--accent-gold) 100%);color:#fff}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-md),var(--shadow-glow)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-light)}.btn-secondary:hover{background:var(--bg-card-hover);border-color:var(--accent-purple)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:2rem}.modal{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);width:100%;max-width:600px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg)}.modal-header{padding:1.5rem;border-bottom:1px solid var(--border-subtle);display:flex;justify-content:space-between;align-items:center}.modal-title{font-size:1.25rem;font-weight:700}.modal-close{width:36px;height:36px;border:none;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.modal-close:hover{background:var(--danger);color:#fff}.modal-body{padding:1.5rem}.modal-footer{padding:1.5rem;border-top:1px solid var(--border-subtle);display:flex;justify-content:flex-end;gap:.75rem}.form-group{margin-bottom:1.25rem}.form-label{display:block;font-size:.85rem;font-weight:500;color:var(--text-secondary);margin-bottom:.5rem}.form-input,.form-select{width:100%;padding:.75rem 1rem;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-sans);font-size:.95rem;transition:all .2s ease}.form-input:focus,.form-select:focus{outline:none;border-color:var(--accent-purple);box-shadow:0 0 0 3px #8b5cf61a}.form-input::placeholder{color:var(--text-muted)}.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.form-section{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border-subtle)}.form-section-title{font-size:.9rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.bt-form-list{display:flex;flex-direction:column;gap:.75rem}.bt-form-item{display:flex;gap:.75rem;align-items:flex-end}.bt-form-item .form-group{flex:1;margin-bottom:0}.bt-remove-btn{width:40px;height:40px;border:1px solid var(--border-subtle);background:transparent;color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.bt-remove-btn:hover{background:#ef44441a;color:var(--danger);border-color:var(--danger)}.add-bt-btn{display:flex;align-items:center;gap:.5rem;padding:.625rem 1rem;background:transparent;border:1px dashed var(--border-light);color:var(--text-secondary);font-size:.85rem;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease;margin-top:.5rem}.add-bt-btn:hover{border-color:var(--accent-purple);color:var(--accent-purple);background:#8b5cf60d}.charts-section{padding:2rem 0}.charts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:1.5rem}.chart-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem}.chart-title{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.chart-container{height:300px;position:relative}.summary-section{margin-bottom:2rem}.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}.summary-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.5rem;position:relative;overflow:hidden}.summary-card:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%}.summary-card.balance:before{background:var(--danger)}.summary-card.transfer:before{background:var(--accent-purple)}.summary-card.fee:before{background:var(--warning)}.summary-card.total:before{background:var(--accent-gold)}.summary-icon{width:48px;height:48px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;margin-bottom:1rem}.summary-card.balance .summary-icon{background:#ef44441a;color:var(--danger)}.summary-card.transfer .summary-icon{background:#8b5cf61a;color:var(--accent-purple)}.summary-card.fee .summary-icon{background:#f59e0b1a;color:var(--warning)}.summary-card.total .summary-icon{background:#d4af371a;color:var(--accent-gold)}.summary-label{font-size:.85rem;color:var(--text-muted);margin-bottom:.25rem}.summary-value{font-size:1.75rem;font-weight:700;font-family:var(--font-mono);color:var(--text-primary)}.empty-state{text-align:center;padding:4rem 2rem;background:var(--bg-card);border:1px dashed var(--border-light);border-radius:var(--radius-lg)}.empty-icon{width:80px;height:80px;margin:0 auto 1.5rem;background:var(--bg-tertiary);border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}.empty-title{font-size:1.25rem;font-weight:600;margin-bottom:.5rem}.empty-text{color:var(--text-muted);margin-bottom:1.5rem}.loading{display:flex;align-items:center;justify-content:center;padding:4rem}.spinner{width:48px;height:48px;border:3px solid var(--border-subtle);border-top-color:var(--accent-purple);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast-container{position:fixed;bottom:2rem;right:2rem;z-index:1100;display:flex;flex-direction:column;gap:.75rem}.toast{padding:1rem 1.25rem;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:.75rem;min-width:280px;animation:slideIn .3s ease}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast.success{border-left:3px solid var(--success)}.toast.error{border-left:3px solid var(--danger)}.toast-icon{flex-shrink:0}.toast.success .toast-icon{color:var(--success)}.toast.error .toast-icon{color:var(--danger)}@media (max-width: 768px){.main-content,.header{padding:1rem}.header-content{flex-direction:column;gap:1rem}.cards-grid,.charts-grid,.form-row,.summary-grid{grid-template-columns:1fr}.modal{margin:1rem}}.view-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}.view-tab{padding:.5rem 1rem;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.85rem;cursor:pointer;transition:all .2s ease}.view-tab:hover{border-color:var(--border-light);color:var(--text-primary)}.view-tab.active{background:var(--accent-purple);border-color:var(--accent-purple);color:#fff}.downgrade-option{margin-top:.75rem;padding:.5rem .75rem;background:#10b9811a;border-radius:var(--radius-sm);font-size:.8rem;color:var(--success);display:flex;align-items:center;gap:.5rem}