:root {
  --bg: #121213;
  --fg: #ffffff;
  --tile: #3a3a3c;
  --tile-empty: #121213;
  --border: #3a3a3c;
  --border-active: #565758;
  --grey: #3a3a3c;
  --yellow: #b59f3b;
  --green: #538d4e;
  --accent: #538d4e;
  --muted: #818384;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  align-items: center;
}

header {
  text-align: center;
  padding: 1.2rem 1rem 0.4rem;
  border-bottom: 1px solid var(--border);
  width: 100%;
  max-width: 520px;
}

h1 { margin: 0; letter-spacing: 0.08em; font-size: 1.9rem; text-transform: uppercase; }
.tagline { color: var(--muted); font-size: 0.9rem; margin: 0.35rem 0 0.8rem; }

main {
  width: 100%;
  max-width: 420px;
  padding: 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#board {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 6px;
  margin-bottom: 1rem;
}

.row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.tile {
  width: 58px;
  height: 58px;
  border: 2px solid var(--border);
  background: var(--tile-empty);
  color: var(--fg);
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  text-align: center;
  line-height: 54px;
  cursor: pointer;
  user-select: none;
  transition: background 0.1s, border-color 0.1s, transform 0.05s;
}
.tile:active { transform: scale(0.96); }
.tile.filled { border-color: var(--border-active); }
.tile.g { background: var(--green); border-color: var(--green); }
.tile.y { background: var(--yellow); border-color: var(--yellow); }
.tile.x { background: var(--grey); border-color: var(--grey); }

.row.active .tile { cursor: text; }
.row:not(.active) .tile { opacity: 0.85; }

.controls { display: flex; gap: 0.6rem; margin-bottom: 0.5rem; }

button {
  font: inherit;
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border: none;
  border-radius: 6px;
  background: var(--tile);
  color: var(--fg);
  cursor: pointer;
}
button.primary { background: var(--accent); }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.hint { color: var(--muted); font-size: 0.82rem; margin: 0.3rem 0 0.8rem; }

.result {
  width: 100%;
  border-top: 1px solid var(--border);
  padding-top: 0.8rem;
}
.result-head {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.95rem;
  margin-bottom: 0.6rem;
}
#suggestion b { color: var(--green); text-transform: uppercase; letter-spacing: 0.06em; }

.words {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.5rem;
  max-height: 220px;
  overflow-y: auto;
}
.words li {
  background: var(--tile);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-variant: small-caps;
  letter-spacing: 0.04em;
  cursor: pointer;
}
.words li:hover { background: var(--border-active); }

.status { color: var(--muted); font-size: 0.85rem; min-height: 1.2em; }
.status.error { color: #f28b82; }

footer {
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
  padding: 0.8rem;
  border-top: 1px solid var(--border);
  width: 100%;
  max-width: 520px;
}
code { color: #8ab4f8; }