:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel2: #1f262d;
  --border: #2a323b;
  --text: #e8eef5;
  --muted: #9aa6b2;
  --accent: #4ade80;
  --warn: #fb7185;
  --link: #93c5fd;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: ui-sans-serif, -apple-system, "SF Pro Text", Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

header {
  padding: 1.5rem 2rem 0.5rem;
  border-bottom: 1px solid var(--border);
}
header h1 { margin: 0; font-size: 1.4rem; font-weight: 600; }
header .subtitle { margin: 0.4rem 0 1rem; color: var(--muted); font-size: 0.9rem; }

main {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  max-width: 1600px;
  margin: 0 auto;
}
main > * { min-width: 0; }   /* let grid items shrink past content size */

aside#inputs {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  position: sticky;
  top: 1rem;
  align-self: start;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
}

aside h2 { margin: 0 0 1rem; font-size: 1rem; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; color: var(--muted); }

#scenario-form { display: flex; flex-direction: column; gap: 0.85rem; }

#scenario-form label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}
#scenario-form label small { color: var(--muted); font-size: 0.75rem; opacity: 0.8; }

#scenario-form input[type="number"] {
  background: var(--panel2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 0.6rem;
  border-radius: 6px;
  font-size: 0.95rem;
  width: 100%;
}

#scenario-form fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem 0.6rem;
  background: var(--panel2);
}
#scenario-form legend { padding: 0 0.4rem; color: var(--muted); font-size: 0.8rem; }
#scenario-form .radio {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.9rem; color: var(--text);
  flex-direction: row;
}
#scenario-form .radio input { width: auto; }

#scenario-form details summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0.25rem 0;
}
#scenario-form details[open] summary { margin-bottom: 0.5rem; }

button#recalc-btn {
  background: var(--accent);
  color: #053018;
  border: 0;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.95rem;
}
button#recalc-btn:disabled { opacity: 0.6; cursor: wait; }

p#status { font-size: 0.8rem; margin: 0; color: var(--muted); min-height: 1em; }

section#results {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  overflow-x: auto;   /* let wide tables scroll horizontally inside the card */
}
.card h2 { margin: 0 0 1rem; font-size: 1rem; font-weight: 600; letter-spacing: 0.02em; text-transform: uppercase; color: var(--muted); }
.card h2 small { font-weight: 400; text-transform: none; opacity: 0.8; margin-left: 0.5rem; }

.filters {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
  font-size: 0.85rem;
}
.filter-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
.filter-toggle input { margin: 0; }

#best-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  color: var(--accent);
}
#best-card dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 1.5rem;
  row-gap: 0.4rem;
  margin: 0;
  font-size: 0.95rem;
}
#best-card dt { color: var(--muted); }
#best-card dd { margin: 0; }

table#leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
table#leaderboard th, table#leaderboard td {
  padding: 0.5rem 0.6rem;
  text-align: right;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table#leaderboard th:nth-child(2), table#leaderboard td:nth-child(2) { text-align: left; max-width: 280px; white-space: normal; }
table#leaderboard th:first-child, table#leaderboard td:first-child { text-align: right; color: var(--muted); }
table#leaderboard thead th {
  position: sticky; top: 0;
  background: var(--panel2);
  border-bottom: 2px solid var(--border);
  cursor: help;
  font-weight: 600;
  user-select: none;
}
table#leaderboard thead th[data-sort] { cursor: pointer; }
table#leaderboard thead th[data-sort]:hover { color: var(--accent); }
table#leaderboard thead th.sort-asc::after  { content: " ↑"; color: var(--accent); }
table#leaderboard thead th.sort-desc::after { content: " ↓"; color: var(--accent); }
table#leaderboard td.pos { color: var(--accent); }
table#leaderboard td.neg { color: var(--warn); }

dl.legend {
  margin: 1rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  display: grid;
  grid-template-columns: max-content 1fr;
  column-gap: 0.75rem;
  row-gap: 0.2rem;
}
dl.legend dt { font-weight: 600; color: var(--text); }
dl.legend dd { margin: 0; }

/* Make leaderboard rows look clickable */
table#leaderboard tbody tr { cursor: pointer; }
table#leaderboard tbody tr a { color: inherit; text-decoration: underline dotted; text-underline-offset: 2px; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 100; display: flex;
         align-items: stretch; justify-content: center; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.7); }
.modal-card {
  position: relative; background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; max-width: 1200px; width: calc(100% - 2rem);
  margin: 1rem auto; padding: 1.25rem; overflow-y: auto; max-height: calc(100vh - 2rem);
}
.modal-card header { display: flex; justify-content: space-between;
                     align-items: baseline; margin-bottom: 0.75rem; }
.modal-card h2 { margin: 0; font-size: 1.1rem; }
.modal-card h2 .shop-link { font-size: 0.75rem; font-weight: 400; margin-left: 0.75rem; color: var(--muted); }
.modal-card h2 .shop-link:hover { color: var(--link); }
.modal-close { background: none; border: 0; font-size: 1.6rem; line-height: 1;
               color: var(--muted); cursor: pointer; padding: 0 0.5rem; }
.modal-close:hover { color: var(--text); }
.modal-controls { display: flex; gap: 0.6rem; align-items: center;
                  flex-wrap: wrap; margin-bottom: 0.75rem; font-size: 0.85rem; }
.modal-controls button, .modal-controls input, .modal-controls select {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.35rem 0.6rem; font-size: 0.85rem;
}
.modal-controls button { cursor: pointer; }
.modal-summary {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.5rem 1.25rem; padding: 0.6rem 0.75rem; background: var(--panel2);
  border: 1px solid var(--border); border-radius: 8px; margin-bottom: 0.75rem;
  font-size: 0.85rem;
}
.modal-summary div { display: flex; justify-content: space-between; gap: 0.5rem; }
.modal-summary div strong { color: var(--accent); }
.modal-strategy {
  border: 1px solid var(--border); border-radius: 8px; background: var(--panel2);
  padding: 0.45rem 0.75rem 0.6rem; margin-bottom: 0.75rem;
  display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; align-items: center;
}
.modal-strategy legend { padding: 0 0.4rem; font-size: 0.78rem; color: var(--muted); }
.modal-strategy .radio { display: inline-flex; align-items: center; gap: 0.4rem;
                         font-size: 0.85rem; color: var(--text); cursor: pointer; }
.modal-strategy .radio input { margin: 0; }
.modal-charts { display: flex; flex-direction: column; gap: 0.6rem; }
.modal-charts figure { margin: 0; background: var(--panel); border: 1px solid var(--border);
                      border-radius: 8px; padding: 0.6rem 0.75rem 1rem; }
.modal-charts figcaption { font-size: 0.78rem; color: var(--muted); margin-bottom: 0.3rem; }
.modal-charts .chart { width: 100%; height: 150px; }
.modal-charts figure:nth-child(4) .chart { height: 230px; }   /* taller grid panel (4th now) */

/* uPlot dark-theme tweaks */
.uplot { color: var(--text); }
.uplot .u-legend { color: var(--text); font-size: 0.75rem; padding: 1rem 0 0.6rem; }
.uplot .u-legend th, .uplot .u-legend td { color: var(--text); padding: 0 0.4rem; }
.uplot .u-legend .u-marker { display: inline-block; }
.uplot .u-axis { color: var(--muted); }
.uplot .u-cursor-x, .uplot .u-cursor-y { stroke: var(--accent); }
table#leaderboard tbody tr:hover { background: var(--panel2); }
table#leaderboard tbody tr:first-child { background: rgba(74, 222, 128, 0.08); }

footer {
  border-top: 1px solid var(--border);
  padding: 1rem 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}

@media (max-width: 920px) {
  main { grid-template-columns: 1fr; padding: 1rem; gap: 1rem; }
  aside#inputs {
    position: static;
    max-height: none;
    overflow: visible;
  }
  header { padding: 1rem 1rem 0.5rem; }
  header h1 { font-size: 1.2rem; }
  header .subtitle { font-size: 0.85rem; }
  /* Make wide tables horizontally scrollable instead of overflowing the card. */
  .card { overflow-x: auto; }
  table#leaderboard { font-size: 0.8rem; }
  table#leaderboard th, table#leaderboard td { padding: 0.4rem 0.45rem; }
  #best-card dl { grid-template-columns: 1fr; row-gap: 0.15rem; }
  #best-card dt { color: var(--muted); margin-top: 0.4rem; }
  footer { padding: 1rem; text-align: left; }
}