*,:before,:after{box-sizing:border-box}:root{--color-bg:#f8fafc;--color-surface:#fff;--color-border:#e2e8f0;--color-text:#1e293b;--color-text-muted:#64748b;--color-primary:#3b82f6;--color-primary-hover:#2563eb;--color-success:#10b981;--color-success-bg:#ecfdf5;--color-danger:#ef4444;--color-danger-hover:#dc2626;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000001a;--radius-sm:4px;--radius-md:8px;--radius-lg:12px}body{color:var(--color-text);background:var(--color-bg);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.5}.app{max-width:1600px;margin:0 auto;padding:24px}header{margin-bottom:32px}header h1{color:var(--color-text);margin:0 0 8px;font-size:28px;font-weight:700}.subtitle{color:var(--color-text-muted);margin:0;font-size:16px}section{margin-bottom:32px}section h2{margin:0 0 16px;font-size:18px;font-weight:600}.mortgage-inputs{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:24px}.inputs-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:20px;display:grid}.input-group{flex-direction:column;gap:6px;display:flex}.input-group label{color:var(--color-text-muted);font-size:13px;font-weight:500}.input-wrapper{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-sm);align-items:center;display:flex;overflow:hidden}.input-wrapper:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px #3b82f61a}.input-prefix,.input-suffix{color:var(--color-text-muted);background:var(--color-surface);white-space:nowrap;padding:8px 12px;font-size:14px}.input-wrapper input{background:0 0;border:none;flex:1;min-width:0;padding:8px 12px;font-size:14px}.input-wrapper input:focus{outline:none}.input-group>input{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);padding:8px 12px;font-size:14px}.input-group>input:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 3px #3b82f61a}.quick-stats{border-top:1px solid var(--color-border);color:var(--color-text-muted);gap:32px;padding-top:16px;font-size:15px;display:flex}.quick-stats strong{color:var(--color-text)}.scenarios-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.scenarios-header h2{margin:0}.scenarios-actions{gap:12px;display:flex}.btn-add,.btn-reset{border-radius:var(--radius-sm);cursor:pointer;padding:8px 16px;font-size:14px;font-weight:500;transition:all .15s}.btn-add{background:var(--color-primary);color:#fff;border:none}.btn-add:hover{background:var(--color-primary-hover)}.btn-reset{background:var(--color-surface);color:var(--color-text-muted);border:1px solid var(--color-border)}.btn-reset:hover{background:var(--color-bg);color:var(--color-text)}.scenarios-grid{gap:24px;padding-bottom:16px;display:flex;overflow-x:auto}.scenario-column{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);flex:0 0 420px;padding:20px}.scenario-header{align-items:center;gap:12px;margin-bottom:16px;display:flex}.scenario-name{border-radius:var(--radius-sm);background:0 0;border:1px solid #0000;flex:1;padding:6px 10px;font-size:16px;font-weight:600}.scenario-name:hover{background:var(--color-bg)}.scenario-name:focus{border-color:var(--color-primary);background:var(--color-surface);outline:none}.btn-remove{border-radius:var(--radius-sm);width:28px;height:28px;color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;padding:0;font-size:20px;line-height:1;transition:all .15s}.btn-remove:hover{color:var(--color-danger);background:#fef2f2}.summary-card{background:var(--color-bg);border-radius:var(--radius-md);margin-bottom:16px;padding:16px}.summary-card h3{display:none}.summary-stats{grid-template-columns:1fr 1fr;gap:12px;display:grid}.stat{flex-direction:column;gap:2px;display:flex}.stat-label{color:var(--color-text-muted);font-size:12px}.stat-value{color:var(--color-text);font-size:15px;font-weight:600}.stat.savings{background:var(--color-success-bg);border-radius:var(--radius-sm);margin:-4px;padding:8px}.stat.savings .stat-value{color:var(--color-success)}.scenario-controls{border-bottom:1px solid var(--color-border);margin-bottom:16px;padding-bottom:16px}.lump-sum-section{margin-top:16px}.lump-sum-header{color:var(--color-text-muted);justify-content:space-between;align-items:center;margin-bottom:8px;font-size:13px;font-weight:500;display:flex}.btn-small{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-surface);color:var(--color-text);cursor:pointer;padding:4px 10px;font-size:12px;font-weight:500;transition:all .15s}.btn-small:hover{background:var(--color-bg);border-color:var(--color-primary);color:var(--color-primary)}.lump-sum-editor{align-items:flex-end;gap:8px;margin-bottom:8px;display:flex}.lump-sum-field{flex-direction:column;flex:1;gap:4px;display:flex}.lump-sum-field label{color:var(--color-text-muted);font-size:11px}.lump-sum-field input{border:1px solid var(--color-border);border-radius:var(--radius-sm);width:100%;padding:6px 10px;font-size:13px}.lump-sum-field input:focus{border-color:var(--color-primary);outline:none}.lump-sum-actions{gap:4px;display:flex}.lump-sum-list{margin:0;padding:0;list-style:none}.lump-sum-list li{background:var(--color-bg);border-radius:var(--radius-sm);justify-content:space-between;align-items:center;margin-bottom:4px;padding:6px 10px;font-size:13px;display:flex}.btn-tiny{width:20px;height:20px;color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;border-radius:50%;padding:0;font-size:14px;transition:all .15s}.btn-tiny:hover{color:var(--color-danger);background:#fef2f2}.schedule-table-container{overflow-x:auto}.schedule-table{border-collapse:collapse;width:100%;font-size:13px}.schedule-table th,.schedule-table td{text-align:right;white-space:nowrap;padding:8px 10px}.schedule-table th:first-child,.schedule-table td:first-child{text-align:center;width:40px}.schedule-table th:nth-child(2),.schedule-table td:nth-child(2){text-align:left}.schedule-table thead th{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--color-border);background:var(--color-bg);font-size:11px;font-weight:600;position:sticky;top:0}.schedule-table tbody tr:hover{background:var(--color-bg)}.schedule-table tbody tr.has-extra{background:var(--color-success-bg)}.schedule-table tbody tr.has-extra:hover{background:#d1fae5}.btn-show-more{border:1px dashed var(--color-border);border-radius:var(--radius-sm);width:100%;color:var(--color-text-muted);cursor:pointer;background:0 0;margin-top:12px;padding:10px;font-size:13px;transition:all .15s}.btn-show-more:hover{background:var(--color-bg);border-color:var(--color-primary);color:var(--color-primary)}@media (width<=768px){.app{padding:16px}.scenarios-grid{flex-direction:column}.scenario-column{flex:auto}.quick-stats{flex-direction:column;gap:8px}.scenarios-header{flex-direction:column;align-items:stretch;gap:12px}.scenarios-actions{justify-content:stretch}.scenarios-actions button{flex:1}}