/* Mobile-first: the base styles target phones; the few @media blocks at the
   bottom widen things for laptops/desktops. */

:root {
  --green: #1d7a46;
  --green-dark: #14592f;
  --bg: #f7f7f2;
  --card: #ffffff;
  --ink: #21272b;
  --ink-soft: #5d6b66;
  --line: #e4e6df;
  --up: #c0392b;     /* costlier — warm red */
  --down: #1d7a46;   /* cheaper — green */
  --same: #5d6b66;   /* dark enough for WCAG AA contrast on white */
  --chip-bg: #e8efe9;
  --radius: 12px;
}

* { box-sizing: border-box; }

/* Visually hidden but read by screen readers (search result counts). */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 880px; margin: 0 auto; padding: 0 14px; }

/* ---------- header ---------- */
.site-header {
  background: linear-gradient(160deg, var(--green-dark), var(--green));
  color: #fff;
  padding: 26px 0 20px;
}
.site-header h1 { margin: 0; font-size: 1.65rem; letter-spacing: -0.5px; }
.tagline { margin: 6px 0 0; opacity: 0.92; font-size: 0.95rem; }
.report-date { margin: 10px 0 0; font-weight: 600; font-size: 1rem; }

/* ---------- movers strip ---------- */
.movers {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 14px 0 2px;
  scrollbar-width: none;
}
.movers::-webkit-scrollbar { display: none; }
.mover {
  flex: 0 0 auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-size: 0.85rem;
  white-space: nowrap;
  cursor: pointer;
}
.mover b { display: block; font-size: 0.92rem; }

/* ---------- controls ---------- */
.controls { padding-top: 12px; position: sticky; top: 0; background: var(--bg); z-index: 5; }
#search {
  width: 100%;
  font-size: 1.05rem;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}
#search:focus { outline: 2px solid var(--green); border-color: var(--green); }

.chips { display: flex; gap: 8px; overflow-x: auto; padding: 10px 0; scrollbar-width: none; }
.chips::-webkit-scrollbar { display: none; }
.chip {
  flex: 0 0 auto;
  border: none;
  background: var(--chip-bg);
  color: var(--green-dark);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 11px 16px; /* comfortable thumb target on phones */
  border-radius: 999px;
  cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--green); color: #fff; }

.legend { color: var(--ink-soft); font-size: 0.8rem; margin: 4px 0 10px; }

/* ---------- commodity list ---------- */
.category-head {
  margin: 18px 0 8px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
  scroll-margin-top: 80px; /* keep rows clear of the sticky search bar
                              when the movers strip scrolls to them */
}
.item-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
}
.item-row:focus-visible { outline: 2px solid var(--green); outline-offset: -2px; }

.item-name { flex: 1 1 auto; min-width: 0; }
.item-name b { font-size: 1rem; }
.item-name small { display: block; color: var(--ink-soft); font-size: 0.8rem; }

.item-price { text-align: right; white-space: nowrap; }
.price-now { font-weight: 700; font-size: 1.05rem; }
.price-unit { color: var(--ink-soft); font-size: 0.78rem; }
.not-traded { color: var(--ink-soft); font-size: 0.85rem; font-style: italic; }

.chg { font-weight: 700; font-size: 0.85rem; white-space: nowrap; }
.chg.up { color: var(--up); }
.chg.down { color: var(--down); }
.chg.same { color: var(--same); }

/* ---------- expanded detail ---------- */
.detail { border-top: 1px solid var(--line); padding: 12px 14px; }
.detail .facts { color: var(--ink-soft); font-size: 0.88rem; margin: 0 0 10px; }
.ranges { display: flex; gap: 6px; margin-bottom: 10px; }
.range-btn {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  padding: 9px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
}
.range-btn[aria-pressed="true"] { background: var(--green); border-color: var(--green); color: #fff; }
.chart-box { position: relative; height: 220px; }
.chart-note { color: var(--ink-soft); font-size: 0.78rem; margin: 8px 0 0; }

/* ---------- footer ---------- */
.empty { color: var(--ink-soft); text-align: center; padding: 30px 0; }
.site-footer {
  margin-top: 36px;
  padding: 22px 0 30px;
  background: #ecede6;
  color: var(--ink-soft);
  font-size: 0.82rem;
}
.site-footer a { color: var(--green-dark); }

/* ---------- wider screens ---------- */
@media (min-width: 700px) {
  .site-header h1 { font-size: 2.1rem; }
  .item-row { padding: 14px 18px; }
  .chart-box { height: 300px; }
  .controls { display: flex; gap: 14px; align-items: center; padding-top: 16px; }
  #search { flex: 1 0 280px; }
  .chips { padding: 0; flex-wrap: wrap; overflow-x: visible; }
}