/* Duotrigordle Bot — direct, light, Wordle-canonical. */

:root {
  --bg: #ffffff;
  --paper: #fafafa;
  --rule: #e3e3e3;
  --ink: #1a1a1b;
  --ink-soft: #3a3a3c;
  --muted: #787c7e;

  --green: #6aaa64;
  --yellow: #c9b458;
  --grey: #787c7e;
  --tile-border: #d3d6da;
  --tile-empty: #ffffff;

  --accent: #1a73e8;

  --sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 15px/1.55 var(--sans);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 2px; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }
b, strong { font-weight: 600; }

main { max-width: 920px; margin: 0 auto; padding: 24px 24px 8px; }

.intro { margin: 0 0 18px; font-size: 15px; color: var(--ink-soft); }
.intro b { color: var(--ink); }

/* Visually hidden but still announced by screen readers and indexed by crawlers. */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px; border: 0;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* tabs */
.tabs { display: inline-flex; border: 1px solid var(--ink); border-radius: 4px; overflow: hidden; margin-bottom: 8px; }
.tab {
  appearance: none; background: #fff; color: var(--ink-soft);
  border: 0; border-right: 1px solid var(--rule);
  font: 500 12px/1 var(--mono); letter-spacing: 0.03em;
  padding: 8px 12px; cursor: pointer;
  transition: background .15s, color .15s;
}
.tab:last-child { border-right: 0; }
.tab:hover { background: var(--paper); color: var(--ink); }
.tab.active { background: var(--ink); color: #fff; }

/* card */
.card { border: 1px solid var(--rule); border-radius: 4px; background: #fff; padding: 16px; }

.controls { display: flex; gap: 6px; flex-wrap: wrap; }
.controls input {
  flex: 1; min-width: 180px;
  background: #fff; color: var(--ink);
  border: 1px solid var(--rule); border-radius: 3px;
  font: 13px var(--mono); padding: 8px 10px;
  outline: none;
}
.controls input:focus { border-color: var(--ink); }
.controls input[type=number] { flex: 0 0 110px; min-width: 110px; }
.controls input#practiceWord, .controls input#byhandWord {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  flex: 0 0 200px; min-width: 200px;
}

.btn {
  appearance: none;
  font: 500 12px/1 var(--mono);
  padding: 8px 14px; border-radius: 3px;
  border: 1px solid var(--ink);
  background: #fff; color: var(--ink);
  cursor: pointer;
  transition: background .15s, color .15s;
}
.btn:hover { background: var(--paper); }
.btn.primary { background: var(--ink); color: #fff; }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn[disabled] { opacity: .4; cursor: not-allowed; background: #fff; color: var(--ink); }

.progress { height: 2px; background: var(--paper); margin-top: 10px; border-radius: 1px; overflow: hidden; }
.progress > i { display: block; height: 100%; width: 0; background: var(--ink); transition: width .15s; }
.status { margin-top: 10px; font: 12px var(--mono); color: var(--muted); min-height: 16px; }
.status b { color: var(--ink); }

.layout {
  margin-top: 14px;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .layout { grid-template-columns: 1fr; } }

.head, .log-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 6px; margin-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}
.label {
  font: 500 11px/1 var(--mono);
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted);
}
.info { font: 12px var(--mono); color: var(--ink-soft); }
.info b { color: var(--ink); }
.pill {
  display: inline-block; padding: 1px 7px;
  border: 1px solid var(--rule); border-radius: 10px;
  font: 11px var(--mono);
}
.pill b { color: var(--ink); }

/* ============================================================
   mini-boards: Wordle-style stack of colored rows per board
   ============================================================ */
.boards-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
}
@media (max-width: 760px) { .boards-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 380px) { .boards-grid { grid-template-columns: repeat(3, 1fr); } }

.mini {
  display: flex; flex-direction: column; align-items: center;
  gap: 3px;
}
.mini .stack {
  width: 100%;
  display: grid;
  grid-auto-rows: 1fr;
  gap: 2px;
}
.mini .row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 2px; }
.mini .cell {
  aspect-ratio: 1 / 1;
  display: grid; place-items: center;
  background: var(--tile-empty);
  border: 1px solid var(--tile-border);
  border-radius: 1px;
  font: 700 10px/1 var(--mono);
  color: var(--ink);
  min-width: 0;
}
/* color classes — b/y/g (black=grey eliminated, y=yellow, g=green) */
.mini .cell.b { background: var(--grey); border-color: var(--grey); color: #fff; }
.mini .cell.y { background: var(--yellow); border-color: var(--yellow); color: #fff; }
.mini .cell.g { background: var(--green); border-color: var(--green); color: #fff; }
.mini .cell.empty { background: transparent; border-color: var(--rule); }

.mini .ct {
  font: 500 10px var(--mono);
  color: var(--ink-soft);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.mini.solved .ct { color: var(--green); font-weight: 700; }
.mini.justsolved .row:last-child .cell { animation: pop .4s ease; }
@keyframes pop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.15); }
  100% { transform: scale(1); }
}

/* By-hand input row: clickable / keyboard-focusable to cycle colors */
.mini .row.input .cell { cursor: pointer; }
.mini .row.input .cell.empty { background: #fff; border-style: dashed; color: var(--muted); }
.mini .row.input { outline: 1px solid transparent; }
.mini.locked .row.input { display: none; }

/* by-hand mode gets a wider grid + bigger clickable cells */
.boards-grid.byhand {
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
@media (max-width: 760px) { .boards-grid.byhand { grid-template-columns: repeat(2, 1fr); } }
.boards-grid.byhand .mini { gap: 5px; }
.boards-grid.byhand .mini .cell { font-size: 15px; border-radius: 2px; }
.boards-grid.byhand .mini .row.input {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 3px;
  margin-top: 4px;
}
.boards-grid.byhand .mini .row.input .cell {
  transition: transform .08s ease, filter .08s ease, box-shadow .08s ease;
  position: relative;
}
.boards-grid.byhand .mini .row.input .cell:hover,
.boards-grid.byhand .mini .row.input .cell.kfocus {
  transform: scale(1.12);
  filter: brightness(1.1);
  z-index: 2;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.18);
}
.boards-grid.byhand .mini .row.input .cell.kfocus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.boards-grid.byhand .mini .row.input .cell:active {
  transform: scale(0.94);
  filter: brightness(0.95);
}
.boards-grid.byhand .mini .row.input .cell.tap { animation: tap .25s ease; }
@keyframes tap {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.22); filter: brightness(1.2); }
  100% { transform: scale(1); }
}

/* The "next guess" appender under daily mode is visually quieter. */
.controls.sub { margin-top: 6px; }
.controls.sub input { font-size: 12px; }
.controls.sub input#dailyNext {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  flex: 0 0 220px;
}

/* ============================================================
   top-5 candidates panel
   ============================================================ */
.thinking-pane { min-width: 0; }
.cands { list-style: none; padding: 0; margin: 0 0 12px; }
.cand {
  display: grid; grid-template-columns: 22px 1fr auto;
  gap: 10px; align-items: center;
  padding: 6px 4px;
  border-bottom: 1px solid var(--rule);
  position: relative;
  transition: background .2s;
}
.cand:last-child { border-bottom: 0; }
.cand .rank { font: 11px var(--mono); color: var(--muted); }
.cand .word { display: inline-grid; grid-template-columns: repeat(5, 1fr); gap: 3px; }
.cand .word .ct {
  display: grid; place-items: center;
  background: #fff; border: 1px solid var(--tile-border);
  border-radius: 2px; aspect-ratio: 1/1; min-width: 24px;
  font: 700 14px var(--mono); color: var(--ink);
}
.cand .meta { font: 11px var(--mono); color: var(--muted); white-space: nowrap; }
.cand .meta b { color: var(--ink); font-weight: 700; }
.cand.chosen { background: rgba(106, 170, 100, 0.07); }
.cand.chosen::before {
  content: ""; position: absolute; left: -8px; top: 50%;
  width: 3px; height: 70%; background: var(--green);
  transform: translateY(-50%); border-radius: 2px;
}
.cand.chosen .rank { color: var(--green); }
.cand.placeholder { opacity: .45; }
.cand.placeholder .word .ct { color: var(--muted); border-style: dashed; }
.cand.flash { animation: flash .45s ease; }
@keyframes flash { 0% { background: rgba(106, 170, 100, 0.32); } 100% { background: rgba(106, 170, 100, 0.07); } }
.cand.clickable { cursor: pointer; }
.cand.clickable:hover { background: var(--paper); }

.log {
  font: 12px var(--mono); color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--rule); border-radius: 3px;
  padding: 8px 10px;
  max-height: 140px; overflow-y: auto;
}
.log div { line-height: 1.6; }
.log b { color: var(--ink); }
.log .plus { color: var(--green); font-weight: 700; }
.log .you { color: var(--accent); }

/* results / install */
.results, .install { margin-top: 44px; }
.results h2, .install h2 { font-size: 18px; font-weight: 600; margin: 0 0 12px; }
.results table { width: 100%; border-collapse: collapse; font-size: 14px; }
.results th, .results td {
  text-align: right; padding: 10px 8px;
  border-bottom: 1px solid var(--rule);
  font-variant-numeric: tabular-nums;
}
.results th:first-child, .results td:first-child { text-align: left; }
.results thead th {
  font: 500 11px var(--mono); color: var(--muted);
  letter-spacing: 0.1em; text-transform: uppercase;
  border-bottom-color: var(--ink);
}
.results tr.best td { background: rgba(106, 170, 100, 0.06); }
.muted { color: var(--muted); }
.footnote { font-size: 13px; color: var(--ink-soft); margin-top: 10px; }

.install ol { padding-left: 20px; margin: 8px 0 0; }
.install li { margin-bottom: 6px; color: var(--ink-soft); font-size: 14px; }
code {
  background: var(--paper); border: 1px solid var(--rule);
  padding: 1px 5px; border-radius: 3px;
  font: 12px var(--mono); color: var(--accent);
}

footer {
  margin: 60px auto 28px; max-width: 920px; padding: 16px 24px;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font: 11px var(--mono); color: var(--muted);
}

@media (max-width: 520px) {
  main { padding: 18px 16px 0; }
  .card { padding: 12px; }
  .tabs { display: flex; width: 100%; }
  .tab { flex: 1; padding: 8px 4px; }
  .controls input#practiceWord, .controls input#byhandWord { flex: 1; min-width: 0; }
  .mini .cell { font-size: 8px; }
  .cand .word .ct { font-size: 12px; min-width: 20px; }
}