:root{--color-primary:#2563eb;--color-primary-dark:#1d4ed8;--color-accent:#10b981;--color-accent-dark:#059669;--color-bg:#fff;--color-surface:#f9fafb;--color-border:#e5e7eb;--color-text:#111827;--color-text-secondary:#6b7280;--color-danger:#ef4444;--color-warning:#f59e0b;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a}*{box-sizing:border-box;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--color-surface);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}#root{flex-direction:column;min-height:100vh;display:flex}.app-container{flex-direction:column;flex:1;padding-bottom:80px;display:flex}.screen{flex:1;width:100%;max-width:800px;margin:0 auto;padding:24px}.screen-header{margin-bottom:32px}.screen-title{color:var(--color-text);margin-bottom:8px;font-size:32px;font-weight:700}.screen-subtitle{color:var(--color-text-secondary);font-size:16px}.card{background:var(--color-bg);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);border-radius:12px;margin-bottom:24px;padding:24px}.card-title{color:var(--color-text);margin-bottom:16px;font-size:18px;font-weight:600}.budget-overview{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px;display:grid}.stat-card{background:var(--color-bg);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);border-radius:12px;padding:20px}.stat-label{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:14px;font-weight:500}.stat-value{color:var(--color-text);font-size:32px;font-weight:700}.stat-value.primary{color:var(--color-primary)}.stat-value.accent{color:var(--color-accent)}.stat-value.danger{color:var(--color-danger)}.form{flex-direction:column;gap:20px;display:flex}.form-group{flex-direction:column;gap:8px;display:flex}.form-label{color:var(--color-text);font-size:14px;font-weight:600}.form-input{border:2px solid var(--color-border);color:var(--color-text);background:var(--color-bg);border-radius:8px;padding:12px 16px;font-size:16px;transition:border-color .2s}.form-input:focus{border-color:var(--color-primary);outline:none}.form-input:hover{border-color:var(--color-primary)}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:16px;font-weight:600;transition:all .2s;display:inline-flex}.btn:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.btn-accent{background:var(--color-accent);color:#fff}.btn-accent:hover{background:var(--color-accent-dark)}.btn-danger{background:var(--color-danger);color:#fff}.btn-danger:hover{background:#dc2626}.purchase-list{flex-direction:column;gap:12px;display:flex}.purchase-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;justify-content:space-between;align-items:center;padding:16px;transition:all .2s;display:flex}.purchase-item:hover{border-color:var(--color-primary);box-shadow:var(--shadow-sm)}.purchase-info{flex:1}.purchase-description{color:var(--color-text);margin-bottom:4px;font-size:16px;font-weight:600}.purchase-date{color:var(--color-text-secondary);font-size:14px}.purchase-amount{color:var(--color-text);margin-right:12px;font-size:20px;font-weight:700}.purchase-actions{align-items:center;gap:8px;display:flex}.btn-icon{cursor:pointer;color:var(--color-text-secondary);background:0 0;border:none;border-radius:6px;padding:8px;transition:all .2s}.btn-icon:hover{background:var(--color-surface);color:var(--color-danger)}.empty-state{text-align:center;color:var(--color-text-secondary);padding:48px 24px}.empty-state-icon{opacity:.5;margin-bottom:16px;font-size:48px}.empty-state-title{color:var(--color-text);margin-bottom:8px;font-size:20px;font-weight:600}.empty-state-text{margin-bottom:24px;font-size:16px}.tab-bar{background:var(--color-bg);border-top:1px solid var(--color-border);justify-content:space-around;padding:12px 0;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 10px #0000000d}.tab-button{cursor:pointer;color:var(--color-text-secondary);background:0 0;border:none;flex-direction:column;align-items:center;gap:4px;padding:8px 16px;font-size:14px;font-weight:500;transition:color .2s;display:flex}.tab-button:hover,.tab-button.active{color:var(--color-primary)}.tab-icon{font-size:24px}.chart-container{height:300px;margin-top:16px}.progress-bar{background:var(--color-surface);border-radius:6px;width:100%;height:12px;margin-top:16px;overflow:hidden}.progress-fill{background:var(--color-primary);border-radius:6px;height:100%;transition:width .3s}.progress-fill.warning{background:var(--color-warning)}.progress-fill.danger{background:var(--color-danger)}.success-message{border:1px solid var(--color-accent);color:#065f46;background:#d1fae5;border-radius:8px;align-items:center;gap:12px;margin-bottom:24px;padding:16px;display:flex}@media (width<=640px){.screen{padding:16px}.screen-title{font-size:24px}.budget-overview{grid-template-columns:1fr}.stat-value{font-size:24px}}