:root{
  --navy:#0f2b3d;
  --gold:#c79a3b;
  --muted:#6b7a86;
  --bg:#f4f6f8;
  --card:#ffffff;
  --radius:12px;
  --glass: rgba(255,255,255,0.6);
  --accent:#8e44ad;
}

body.dark {
  --navy:#e6eef5;
  --gold:#f0c97a;
  --muted:#bfc9cf;
  --bg:#0b1114;
  --card:#0f1720;
  --glass: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--navy);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  transition:background .25s,color .25s;
}

/* Header */
.site-header{
  background:linear-gradient(90deg,var(--navy), #12324a);
  color:white;
  padding:24px 0;
  box-shadow:0 6px 18px rgba(15,43,61,0.12);
}
.header-inner{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:0 24px;
}
.brand{display:flex;align-items:center;gap:12px}
.logo{width:56px;height:56px;object-fit:contain;background:rgba(255,255,255,0.06);border-radius:8px;padding:8px}
.brand-text h1{margin:0;font-size:1.05rem;letter-spacing:0.2px}
.brand-text .tag{margin:0;font-size:0.85rem;opacity:0.9}

/* Header actions */
.header-actions{display:flex;align-items:center;gap:12px}
.btn-ghost{
  background:transparent;border:1px solid rgba(255,255,255,0.12);color:white;padding:8px 12px;border-radius:8px;cursor:pointer;
}
.switch{position:relative;display:inline-block;width:44px;height:24px}
.switch input{display:none}
.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background:#ccc;border-radius:24px;transition:.3s}
.slider:before{content:"";position:absolute;height:18px;width:18px;left:3px;top:3px;background:white;border-radius:50%;transition:.3s}
input:checked + .slider{background:var(--gold)}
input:checked + .slider:before{transform:translateX(20px)}
.toggle-label{color:rgba(255,255,255,0.9);font-size:0.85rem}

/* Layout */
.container{
  max-width:1200px;
  margin:32px auto;
  display:grid;
  grid-template-columns: 440px 1fr;
  gap:24px;
  padding:0 24px;
}
.pdf-header{
  display:none;
  grid-column:1 / -1;
  background:var(--card);
  padding:18px 20px;
  border-radius:var(--radius);
  box-shadow:0 8px 24px rgba(11,17,20,0.06);
  margin-bottom:20px;
}
.pdf-header.pdf-visible{
  display:grid;
  grid-template-columns: auto 1fr;
  gap:20px;
  align-items:start;
}
.pdf-logo{width:120px;max-width:100%;height:auto;display:block}
.pdf-header-right{font-size:0.95rem;line-height:1.55;color:var(--navy)}
.pdf-header-right .pdf-name{font-weight:700;margin-bottom:6px}
.card{
  background:var(--card);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:0 8px 30px rgba(11,17,20,0.06);
  transition:background .25s, box-shadow .25s;
}

/* Inputs */
.inputs h2, .results h2{margin:0 0 12px 0;font-size:1rem;color:var(--navy);letter-spacing:0.6px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{display:flex;flex-direction:column}
.form-group.full{grid-column:1 / -1}
.form-group label{display:block;font-size:0.85rem;color:var(--muted);margin-bottom:6px}
input[type="number"], input[type="date"], select{
  width:100%;padding:10px;border-radius:8px;border:1px solid #e6eef3;background:transparent;
  font-size:0.95rem;color:var(--navy);
}
.small-input{margin-top:8px;padding:8px;width:120px}
.hint{font-size:0.8rem;color:var(--muted);margin-top:6px}

/* Hidden helper */
.hidden{display:none}

/* Actions */
.actions-row{display:flex;gap:16px;margin-top:18px}
.btn-primary{
  background:linear-gradient(180deg,var(--gold), #b07f2f);
  color:var(--navy);border:none;padding:12px 16px;border-radius:10px;font-weight:700;cursor:pointer;
}
.btn-primary:hover{transform:translateY(-2px)}
/* Ghost buttons inside the input actions row (not header) */
.actions-row .btn-ghost{background:transparent;border:1px solid #dfe7ea;padding:10px 14px;border-radius:10px;cursor:pointer;color:var(--navy)}

/* Results */
.summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.summary-card{padding:16px;border-radius:10px;background:var(--glass);border:1px solid rgba(0,0,0,0.03)}
.summary-card h3{margin:0 0 8px 0;font-size:0.95rem}
.summary-card p{margin:10px 0;font-size:0.95rem;line-height:1.5}
.summary-card .net{font-weight:700;color:var(--navy);margin-top:12px}
.risk-grid-compact{display:flex;gap:8px;margin-top:10px}
.risk-grid-compact div{flex:1;background:rgba(0,0,0,0.02);padding:8px;border-radius:8px;text-align:center}
.fv{font-weight:700;color:var(--gold);margin-top:6px}

/* Charts */
.chart-grid{display:grid;grid-template-columns:1fr;gap:18px}
.chart-card{padding:16px;border-radius:10px;background:var(--glass)}
/* make full-width charts taller for readability */
.chart-card.chart-full canvas{width:100% !important;height:380px !important}
canvas{width:100% !important;height:260px !important}

/* Analysis */
.analysis-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.analysis-card{padding:16px;border-radius:10px;background:var(--glass)}

/* Monte Carlo */
.mc-row{display:flex;gap:16px;align-items:center}
.mc-summary{flex:1;padding:16px;background:var(--glass);border-radius:10px}
.mc-canvas{flex:2;height:160px !important}

/* Footer */
.site-footer{padding:18px 0;text-align:center;color:var(--muted)}
.footer-inner{max-width:1100px;margin:0 auto;padding:0 16px}

/* Responsive */
@media (max-width:1000px){
  .container{grid-template-columns:1fr; padding:0 12px}
  .chart-grid{grid-template-columns:1fr}
  .summary-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
}