:root {
  --bg: #faf5ea;
  --panel: #fffdf6;
  --panel-2: #f4edda;
  --border: #e3d7ba;
  --text: #232a3a;
  --muted: #7a7466;
  --accent: #15803d;
  --accent-soft: rgba(21, 128, 61, 0.08);
  --sp500: #0284c7;
  --ndx: #7c3aed;
  --invested: #a8a29e;
  --danger: #dc2626;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.site-header {
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #fffdf6, var(--bg));
}

.brand { display: flex; align-items: center; gap: 0.9rem; }
.brand h1 { margin: 0; font-size: 1.5rem; letter-spacing: 0.02em; }
.tagline { margin: 0.15rem 0 0; color: var(--muted); font-size: 0.9rem; }

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
  align-items: start;
}

.controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 1.5rem;
  box-shadow: 0 1px 3px rgba(120, 100, 60, 0.08);
}

.control-group h2 {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.picker { display: flex; flex-direction: column; gap: 0.6rem; }

.pick-card {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
  user-select: none;
}
.pick-card:hover:not(.disabled) { border-color: var(--accent); }
.pick-card.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.pick-card.disabled { opacity: 0.45; cursor: not-allowed; background: var(--panel-2); }

.pick-card .dot {
  width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--muted);
  flex-shrink: 0;
}
.pick-card.selected .dot { border-color: var(--accent); background: var(--accent); }
.pick-card .swatch { width: 12px; height: 12px; border-radius: 4px; flex-shrink: 0; }

.pick-card .name { font-weight: 600; font-size: 0.95rem; }
.pick-card .desc { display: block; font-weight: 400; font-size: 0.8rem; color: var(--muted); }

.badge {
  margin-left: auto;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--panel-2);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}

.field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 0.9rem; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.field-row .field { margin-bottom: 0.9rem; min-width: 0; }
.field-row input, .field-row select { min-width: 0; }
.field > span { font-size: 0.9rem; color: var(--muted); }

.input-wrap { position: relative; }
.input-wrap .prefix {
  position: absolute; left: 0.8rem; top: 50%;
  transform: translateY(-50%); color: var(--muted);
}
input[type="number"], input[type="text"], select {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-size: 1rem;
  color-scheme: light;
}
.input-wrap input { padding-left: 1.7rem; }
input[type="number"]:focus, input[type="text"]:focus, select:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent);
}

.hint { font-size: 0.8rem; color: var(--muted); margin: 0; }
.hint.error { color: var(--danger); }

.check-field {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.9rem; margin-bottom: 0.9rem; cursor: pointer;
}
.check-field input { width: 1.1rem; height: 1.1rem; accent-color: var(--accent); }

.desc-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.92rem;
  line-height: 1.65;
  box-shadow: 0 1px 3px rgba(120, 100, 60, 0.08);
}
.desc-card p { margin: 0; }
.desc-card .approx-note {
  display: block; margin-top: 0.6rem; padding-top: 0.6rem;
  border-top: 1px dashed var(--border);
  color: var(--muted); font-size: 0.85rem;
}

.vs-bh { display: block; margin-top: 0.25rem; color: var(--muted); font-size: 0.82rem; }

.results { display: flex; flex-direction: column; gap: 1.25rem; min-width: 0; }

.chart-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(120, 100, 60, 0.08);
}
.chart-head h2 { margin: 0; font-size: 1.1rem; }
.chart-head p { margin: 0.25rem 0 0.75rem; color: var(--muted); font-size: 0.85rem; }
.chart-wrap { position: relative; height: 420px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.25rem; }

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  border-top: 3px solid var(--accent);
  box-shadow: 0 1px 3px rgba(120, 100, 60, 0.08);
}
.stat-card h3 { margin: 0 0 1rem; font-size: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.stat-card h3 .swatch { width: 12px; height: 12px; border-radius: 4px; }

.stat-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 0.45rem 0; border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}
.stat-row:last-child { border-bottom: none; }
.stat-row .label { color: var(--muted); }
.stat-row .value { font-weight: 600; font-variant-numeric: tabular-nums; }
.value.positive { color: var(--accent); }
.value.negative { color: var(--danger); }

.verdict {
  margin-top: 0.9rem; padding: 0.6rem 0.8rem;
  background: var(--accent-soft);
  border: 1px solid rgba(21, 128, 61, 0.3);
  border-radius: 8px; font-size: 0.88rem;
}

.site-footer {
  padding: 1.5rem 2rem 2.5rem;
  max-width: 1400px; margin: 0 auto;
  color: var(--muted); font-size: 0.8rem; line-height: 1.6;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; padding: 1rem; }
  .controls { position: static; }
  .chart-wrap { height: 320px; }
  .site-header { padding: 1rem; }
}