*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--teal: #1a7a8a;--teal-dark: #0d5f6e;--teal-bg: #e8f5f7;--navy: #0d1f2d;--text: #1a1a2e;--muted: #5a6a7a;--border: #d0dde0;--bg: #f0f4f6;--card: #ffffff;--radius: 6px;--shadow: 0 2px 12px rgba(0,0,0,.08)}body{font-family:Inter,Segoe UI,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}.app-shell{display:flex;flex-direction:column;min-height:100vh}.topbar{background:var(--navy);color:#fff;padding:0 28px;height:52px;display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:100}.topbar-logo{font-size:1.15em;font-weight:700;letter-spacing:1.5px;color:#7dd8e8}.topbar-sub{font-size:.8em;color:#8aaabb}.workspace{display:grid;grid-template-columns:380px 1fr;gap:20px;padding:20px 24px;flex:1}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.card-header{padding:14px 18px;background:var(--teal);color:#fff;font-weight:600;font-size:.82em;letter-spacing:1.2px;text-transform:uppercase;display:flex;justify-content:space-between;align-items:center}.card-body{padding:18px}.field{margin-bottom:13px}.field label{display:block;font-size:.8em;font-weight:600;color:var(--muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.8px}input[type=number],input[type=text],select,textarea{width:100%;padding:7px 10px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9em;color:var(--text);background:#fff;transition:border-color .15s}input:focus,select:focus{outline:none;border-color:var(--teal)}.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}.toggle-group{display:flex;gap:0;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.toggle-btn{flex:1;padding:6px 0;border:none;background:#fff;cursor:pointer;font-size:.85em;font-weight:500;color:var(--muted);transition:background .15s,color .15s}.toggle-btn.active{background:var(--teal);color:#fff}.section-title{font-size:.75em;font-weight:700;color:var(--teal);text-transform:uppercase;letter-spacing:1.5px;margin:16px 0 10px;padding-bottom:5px;border-bottom:1px solid var(--teal-bg)}.advanced-toggle{font-size:.78em;color:var(--teal);cursor:pointer;text-decoration:underline;margin-bottom:10px;display:inline-block}.run-btn{width:100%;padding:11px;background:var(--teal);color:#fff;border:none;border-radius:var(--radius);font-size:.95em;font-weight:700;letter-spacing:1px;cursor:pointer;transition:background .15s;margin-top:16px}.run-btn:hover{background:var(--teal-dark)}.run-btn:disabled{background:#aac8ce;cursor:not-allowed}.results-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.chart-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.chart-title{font-size:.78em;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}.placeholder{display:flex;align-items:center;justify-content:center;height:200px;color:#abc;font-size:.9em}.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:.75em;font-weight:600}.badge-green{background:#d4f5e2;color:#1a7a50}.badge-amber{background:#fef3cd;color:#856404}.badge-red{background:#fde8e8;color:#8a1a1a}.error-box{background:#fde8e8;border:1px solid #f5a0a0;border-radius:var(--radius);padding:12px 14px;color:#8a1a1a;font-size:.85em;margin-top:12px}.info-row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:14px}.stat{background:var(--teal-bg);border-radius:var(--radius);padding:10px 14px;flex:1;min-width:100px}.stat-val{font-size:1.2em;font-weight:700;color:var(--teal)}.stat-lbl{font-size:.75em;color:var(--muted);margin-top:2px}.spinner{display:inline-block;width:16px;height:16px;border:2px solid #fff;border-top-color:transparent;border-radius:50%;animation:spin .6s linear infinite;margin-right:8px;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 900px){.workspace,.results-grid{grid-template-columns:1fr}}