:root {
  color-scheme: dark;
  --bg: #0f1115;
  --fg: #e7e9ee;
  --muted: #9aa3b2;
  --card: #171a21;
  --border: #242936;
  --border-strong: #2f3647;
  --accent: #7cc4ff;
  --good: #6aaa64;       /* wordle green */
  --warn: #c9b458;       /* wordle yellow */
  --bad: #787c7e;        /* wordle gray */
  --radius: 8px;
  --maxw: 720px;
  font-family: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body { display: flex; flex-direction: column; min-height: 100vh; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  max-width: var(--maxw); width: 100%; margin: 0 auto;
}
.topbar .brand { color: var(--muted); font-size: 0.9rem; }
.topbar .title { font-weight: 700; }
.topbar .title a { color: inherit; text-decoration: none; }
.topbar .title a:hover { color: var(--accent); text-decoration: none; }
.topbar .stats { margin-left: auto; color: var(--muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }

main {
  flex: 1; width: 100%; max-width: var(--maxw); margin: 0 auto;
  padding: 1rem; display: flex; flex-direction: column; gap: 1rem;
}

.foot {
  max-width: var(--maxw); width: 100%; margin: 0 auto;
  padding: 1rem; font-size: 0.85rem; border-top: 1px solid var(--border);
}

.muted { color: var(--muted); }
.hidden { display: none !important; }

/* ---- Mode tabs ---- */
.mode-tabs { display: inline-flex; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 3px; align-self: flex-start; }
.tab {
  background: transparent; color: var(--muted); border: 0;
  padding: 0.45rem 0.9rem; border-radius: 6px; cursor: pointer;
  font: inherit; line-height: 1.1;
}
.tab.active { background: var(--border-strong); color: var(--fg); }
.tab:hover:not(.active) { color: var(--fg); }

/* ---- Ghost buttons ---- */
.ghost {
  background: transparent; color: var(--muted); border: 1px solid transparent;
  border-radius: 6px; cursor: pointer; font: inherit; padding: 0.25rem 0.55rem;
}
.ghost:hover { color: var(--fg); border-color: var(--border-strong); }
.ghost.small { font-size: 0.8rem; padding: 0.1rem 0.4rem; }

/* ---- Panel ---- */
.panel { display: flex; flex-direction: column; gap: 0.75rem; }
.panel-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }

.board-help, .hint {
  color: var(--muted); font-size: 0.85rem;
}
.board-help em { font-style: normal; font-weight: 600; padding: 0 0.25rem; border-radius: 4px; }
em.t-abs  { background: rgba(120, 124, 126, 0.25); color: #c8ccce; }
em.t-pres { background: rgba(201, 180, 88, 0.22); color: var(--warn); }
em.t-cor  { background: rgba(106, 170, 100, 0.22); color: var(--good); }

/* ---- Board ---- */
.board {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 6px;
  align-self: center;
}
.board-row {
  display: grid;
  grid-template-columns: repeat(5, 56px);
  gap: 6px;
}
.tile {
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: var(--card);
  border: 2px solid var(--border-strong);
  color: var(--fg);
  font-size: 1.6rem; font-weight: 700; text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  user-select: none;
  transition: background 100ms ease, border-color 100ms ease, transform 80ms ease;
  outline: none;
}
.tile:focus { outline: none; }
.tile:hover { border-color: var(--accent); }
.tile.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(124, 196, 255, 0.25);
  position: relative;
  z-index: 1;
}
.tile.empty { color: transparent; }
.tile.filled { transform: scale(1); }
.tile.s-abs  { background: var(--bad);  border-color: var(--bad);  color: #fff; }
.tile.s-pres { background: var(--warn); border-color: var(--warn); color: #fff; }
.tile.s-cor  { background: var(--good); border-color: var(--good); color: #fff; }
.tile.active.s-abs,
.tile.active.s-pres,
.tile.active.s-cor { box-shadow: 0 0 0 2px rgba(124, 196, 255, 0.6); }

@media (max-width: 480px) {
  .board-row { grid-template-columns: repeat(5, 48px); }
  .tile { width: 48px; height: 48px; font-size: 1.4rem; }
}
@media (max-width: 360px) {
  .board-row { grid-template-columns: repeat(5, 42px); gap: 4px; }
  .tile { width: 42px; height: 42px; font-size: 1.2rem; }
}

/* ---- Manual mode ---- */
fieldset.pins, fieldset.letter-map {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 0.5rem 0.75rem 0.75rem; margin: 0;
}
fieldset.pins legend, fieldset.letter-map legend {
  padding: 0 0.4rem; color: var(--muted); font-size: 0.85rem;
  display: inline-flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
}
fieldset.pins .hint, fieldset.letter-map .hint { white-space: nowrap; }
.letter-map .sep { color: var(--border-strong); opacity: 0.6; }
.letter-map em { font-style: normal; padding: 0 0.25rem; border-radius: 4px; font-weight: 600; }

.pins-row {
  display: flex; gap: 6px; margin-top: 0.4rem; flex-wrap: wrap;
  align-items: center;
}
.pin-cell {
  flex: 0 0 auto;
  width: 44px; height: 44px;
  display: block;
}
.pin {
  appearance: none; -webkit-appearance: none;
  box-sizing: border-box;
  display: block;
  width: 100%; height: 100%;
  background: var(--card);
  border: 2px solid var(--border-strong);
  background-clip: padding-box;
  color: var(--fg);
  padding: 0; margin: 0;
  text-align: center;
  font: inherit; font-size: 1.2rem; font-weight: 700; text-transform: uppercase;
  border-radius: 6px;
  outline: none;
  vertical-align: middle;
  line-height: 1;
}
.pin:focus {
  box-shadow: 0 0 0 2px rgba(124, 196, 255, 0.45);
  position: relative;
  z-index: 1;
}
/* Keep the dark border in all states so the visible box size never changes. */
.pin.s-cor  { background: var(--good); color: #fff; }
.pin.s-pres { background: var(--warn); color: #fff; }

.letters {
  display: grid; grid-template-columns: repeat(13, minmax(0, 1fr));
  gap: 4px; margin-top: 0.4rem;
}
.ltr {
  appearance: none; border: 1px solid var(--border-strong); background: var(--card); color: var(--fg);
  font: inherit; font-weight: 600; cursor: pointer; padding: 0.45rem 0; border-radius: 6px;
  text-transform: lowercase;
  transition: background 80ms ease, color 80ms ease, border-color 80ms ease;
}
.ltr:hover { border-color: var(--accent); }
.ltr.req  { background: rgba(201, 180, 88, 0.22); border-color: var(--warn); color: var(--warn); }
.ltr.forb { background: rgba(120, 124, 126, 0.22); border-color: var(--bad);  color: #c8ccce; text-decoration: line-through; }

/* ---- Options ---- */
.options { display: flex; gap: 1.25rem; flex-wrap: wrap; color: var(--muted); font-size: 0.9rem; }
.checkbox { display: inline-flex; align-items: center; gap: 0.4rem; cursor: pointer; }
.checkbox input { accent-color: var(--accent); }

/* ---- Results ---- */
.results { display: flex; flex-direction: column; gap: 0.5rem; }
.results-header {
  display: flex; align-items: baseline; gap: 0.5rem;
  font-variant-numeric: tabular-nums;
}
.results-header #count { font-weight: 700; }
.rows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 6px;
}
.word {
  display: inline-block;
  padding: 0.4rem 0.55rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit; font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
  text-align: center;
  letter-spacing: 0.04em;
  color: var(--fg);
}
.word.solution {
  background: rgba(106, 170, 100, 0.12);
  border-color: rgba(106, 170, 100, 0.55);
  color: #c4e0b8;
  font-weight: 700;
}
.word.solution::after {
  content: ' ★';
  color: var(--good);
  font-size: 0.7rem;
  vertical-align: top;
  margin-left: 1px;
}
.empty { padding: 2rem; text-align: center; }

/* ---- Mobile ---- */
@media (max-width: 600px) {
  main { padding: 0.75rem; gap: 0.75rem; }
  .topbar { padding: 0.6rem 0.75rem; gap: 0.6rem; flex-wrap: wrap; }
  .topbar .title { font-size: 0.95rem; }
  .topbar .stats { font-size: 0.75rem; flex-basis: 100%; margin-left: 0; }
  .options { gap: 0.75rem; }
  .rows { grid-template-columns: repeat(auto-fill, minmax(80px, 1fr)); }
  .word { font-size: 0.9rem; padding: 0.35rem 0.4rem; }
  fieldset.pins, fieldset.letter-map { padding: 0.4rem 0.6rem 0.6rem; }
  .letters { grid-template-columns: repeat(13, minmax(0, 1fr)); gap: 3px; }
  .ltr { padding: 0.5rem 0; font-size: 0.95rem; }
}

@media (max-width: 420px) {
  .pin-cell { width: 38px; height: 38px; }
  .pin { font-size: 1.05rem; }
  .pins-row { gap: 5px; }
  .letters { grid-template-columns: repeat(7, minmax(0, 1fr)); }
}