:root{
  --bg:#0f1115;
  --surface:#171a21;
  --muted:#9aa4b2;
  --text:#e7ecf3;
  --primary:#4f8cff;
  --primary-2:#3768cc;
  --success:#23c164;
  --danger:#ef5350;
  --border:#2b303b;
  --kpi:#1d2330;
  --chip:#10141b;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
h1,h2,h3{margin:0 0 .5rem}
small.muted{color:var(--muted);font-weight:400}

.app-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,#121620,#0f1115)
}
.brand{display:flex;gap:12px;align-items:center}
.logo{font-size:28px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.5))}
.app-header h1{font-size:20px}
.app-header p{margin:.2rem 0 0;color:var(--muted);font-size:13px}
.back-home{color:#fff;text-decoration:none;background:var(--primary);padding:10px 14px;border-radius:10px;font-weight:700}
.back-home:hover{background:var(--primary-2)}

.container{max-width:1200px;margin:24px auto;padding:0 16px}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:16px;margin-bottom:20px;
  box-shadow:0 10px 30px rgba(0,0,0,.35)
}
.card-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}
.grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;padding:16px}
@media (max-width:980px){.grid{grid-template-columns:1fr}}

.inputs .input-group{background:#141822;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:12px}
.inputs .input-group h3{font-size:16px;margin-bottom:12px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:700px){.row{grid-template-columns:1fr}}

label{display:flex;flex-direction:column;gap:6px;font-size:14px}
input{
  background:#0f141d;border:1px solid #2a3140;border-radius:10px;color:var(--text);
  padding:10px 12px;outline:none;transition:.15s
}
input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,140,255,.15)}

.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.btn{
  appearance:none;border:1px solid var(--border);background:#111522;color:#fff;border-radius:10px;
  padding:10px 14px;cursor:pointer;font-weight:700;transition:.15s
}
.btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,0,0,.25)}
.btn.primary{background:var(--primary);border-color:transparent}
.btn.primary:hover{background:var(--primary-2)}
.btn.success{background:var(--success);border-color:transparent}
.btn.danger{background:var(--danger);border-color:transparent}
.btn.subtle{background:#0f141d}

.outputs .summary{background:#141822;border:1px solid var(--border);border-radius:12px;padding:14px;margin-bottom:12px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
@media (max-width:700px){.kpis{grid-template-columns:repeat(2,1fr)}}
.kpi{background:var(--kpi);border:1px solid var(--border);border-radius:12px;padding:12px}
.kpi-label{color:var(--muted);font-size:13px}
.kpi-value{font-size:24px;font-weight:800;letter-spacing:.3px;margin-top:4px}
.kpi-sub{color:var(--muted);font-size:12px;margin-top:2px}
.npv-irr{display:flex;gap:16px;margin-top:10px;flex-wrap:wrap}
.npv-irr-item{background:#0f141d;border:1px solid var(--border);border-radius:10px;padding:8px 10px}
.npv-irr-item .label{color:var(--muted);margin-right:8px}

.summary-text{margin-top:10px;color:#c8d2df}

.charts{background:#141822;border:1px solid var(--border);border-radius:12px;padding:12px;display:grid;gap:12px}

.compare-wrap{padding:16px;display:grid;gap:16px}
.table-scroll{overflow:auto;border:1px solid var(--border);border-radius:12px}
.compare-table{width:100%;border-collapse:collapse;min-width:760px}
.compare-table th,.compare-table td{border-bottom:1px solid var(--border);padding:10px 12px;text-align:right}
.compare-table th:first-child,.compare-table td:first-child{text-align:left}
.compare-table tbody tr.highlight{background:linear-gradient(90deg,#0f141d,#101826)}
.compare-chart{background:#141822;border:1px solid var(--border);border-radius:12px;padding:12px}

.switch{position:relative;display:inline-block;width:54px;height:30px}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background:#2c3446;border-radius:30px;transition:.2s}
.slider:before{position:absolute;content:"";height:22px;width:22px;left:4px;top:4px;background:#fff;border-radius:50%;transition:.2s}
input:checked + .slider{background:var(--primary)}
input:checked + .slider:before{transform:translateX(24px)}
.switch-label{margin-left:8px;color:var(--muted)}

.app-footer{opacity:.8;text-align:center;padding:22px;color:var(--muted);border-top:1px solid var(--border)}