:root {
  --ink: #e8e2d4;
  --muted: #9a917e;
  --faint: #6e6758;
  --paper: #14110e;
  --panel: #1c1814;
  --line: #2e2922;
  --accent: #c4a35a;
  --green: #6f8f62;
  --font: "Iowan Old Style", Palatino, Georgia, serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--font); }
body { max-width: 980px; margin: 0 auto; padding: 28px 22px 80px; }

header { display: flex; justify-content: space-between; gap: 16px; align-items: end; margin-bottom: 22px; }

.explorer {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 22px;
  align-items: start;
  margin-bottom: 20px;
}
.board {
  width: 280px;
  height: 280px;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);
  border: 1px solid var(--line);
}
.sq {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  cursor: pointer;
  user-select: none;
  line-height: 1;
}
.sq.light { background: #e8d5b0; color: #1c1814; }
.sq.dark { background: #b58863; color: #1c1814; }
.sq.sel { outline: 2px solid var(--accent); outline-offset: -2px; }
.sq.hit { box-shadow: inset 0 0 0 3px #6f8f62; }
.explorer-nav { display: flex; gap: 8px; margin-top: 10px; }
.explorer-nav button {
  font: 13px var(--mono);
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 6px 10px;
  cursor: pointer;
}
.opening-name { margin: 8px 0 6px; font-size: 26px; letter-spacing: -0.02em; }
.opening-line { margin: 0; color: var(--muted); font-family: var(--mono); font-size: 14px; }

@media (max-width: 720px) {
  .explorer { grid-template-columns: 1fr; }
}
.eyebrow { margin: 0 0 4px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; color: var(--faint); }
h1 { margin: 0; font-size: 32px; font-weight: 600; letter-spacing: -0.03em; }
.counts { margin: 0; color: var(--muted); font-family: var(--mono); font-size: 13px; }

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  margin-bottom: 18px;
}
.filters label { display: flex; flex-direction: column; gap: 6px; font-size: 12px; color: var(--muted); font-family: var(--mono); text-transform: uppercase; letter-spacing: 0.08em; position: relative; }
.filters input, .filters select {
  font: 15px/1.3 var(--font);
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-transform: none;
  letter-spacing: 0;
}
.elo-pair { display: flex; align-items: center; gap: 6px; }
.elo-pair select { width: 100%; min-width: 0; }
.suggest {
  position: absolute;
  z-index: 8;
  left: 0;
  right: 0;
  top: calc(100% - 2px);
  margin: 0;
  padding: 4px 0;
  list-style: none;
  background: var(--paper);
  border: 1px solid var(--line);
  max-height: 260px;
  overflow: auto;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font);
}
.suggest[hidden] { display: none; }
.suggest li {
  padding: 7px 10px;
  font: 14px/1.3 var(--font);
  color: var(--ink);
  cursor: pointer;
}
.suggest li.active, .suggest li:hover { background: var(--panel); color: var(--accent); }

.results { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--panel);
  text-decoration: none;
  color: inherit;
}
.card:hover { border-color: var(--accent); }
.card h2 { margin: 0; font-size: 18px; font-weight: 600; }
.meta { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; align-content: start; }
.tag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; padding: 3px 7px; border: 1px solid var(--line); color: var(--muted); cursor: help; }
.tag.exact { color: var(--green); border-color: #3d5a36; }
.tag.transpose { color: var(--accent); border-color: #5a4a28; }
.tag.color-white { color: #ddd; }
.tag.color-black { color: #bbb; }
.tag.live { color: var(--green); }
.tag.lesson { color: var(--accent); border-color: #5a4a28; }
.empty { color: var(--muted); }

@media (max-width: 640px) {
  .card { grid-template-columns: 1fr; }
  .tags { justify-content: flex-start; }
}