:root {
  --bg: #f7f5f0;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --ink-soft: #5d5a53;
  --line: #cfcabd;
  --tile: #eeebe3;
  --tile-hover: #e4e0d6;
  --tile-on: #4a4740;
  --tile-on-ink: #ffffff;

  /* Difficulty bands, easiest to trickiest. */
  --l0: #e3b23c;
  --l1: #7fa650;
  --l2: #5b8fc9;
  --l3: #9a72c2;
  --band-ink: #17140f;

  --radius: 8px;
  --gap: 8px;
  --board-max: 620px;
  --font: "Libre Franklin", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16151a;
    --surface: #1f1e24;
    --ink: #f2f0ea;
    --ink-soft: #a9a49a;
    --line: #3a3843;
    --tile: #2c2b33;
    --tile-hover: #383741;
    --tile-on: #cfcabd;
    --tile-on-ink: #16151a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px max(12px, env(safe-area-inset-left)) 10px max(12px, env(safe-area-inset-right));
  border-bottom: 1px solid var(--line);
}

.wordmark {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.icon-btn:hover { background: var(--tile); }
.icon-btn svg { width: 22px; height: 22px; }

/* ---------- stage ---------- */

.stage {
  flex: 1;
  width: 100%;
  max-width: var(--board-max);
  margin: 0 auto;
  padding: 20px 12px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tagline {
  margin: 4px 0 2px;
  font-size: 1rem;
}

.puzzle-label {
  margin: 0 0 16px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ---------- board ---------- */

.board {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--gap);
}

.row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
}

.tile {
  position: relative;
  display: grid;
  place-items: center;
  text-align: center;
  aspect-ratio: 1 / 0.62;
  padding: 4px 3px;
  border: 0;
  border-radius: var(--radius);
  background: var(--tile);
  color: var(--ink);
  font-family: inherit;
  font-size: clamp(0.72rem, 3.4vw, 1rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.05;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
  transition: background-color 90ms ease, transform 90ms ease, color 90ms ease;
}
.tile:hover { background: var(--tile-hover); }
.tile:focus-visible { outline: 3px solid var(--l2); outline-offset: 2px; }
.tile:active { transform: scale(0.97); }

/* fitText sets the span's font-size in px; these keep long phrases wrapping
   sanely inside the tile rather than clipping or forcing it wider. */
.tile-text {
  display: block;
  width: 100%;
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
}

.tile.on {
  background: var(--tile-on);
  color: var(--tile-on-ink);
}

.tile.pop { animation: pop 160ms ease; }
@keyframes pop { 50% { transform: scale(1.06); } }

.tile.shake { animation: shake 380ms ease; }
@keyframes shake {
  10%, 90% { transform: translateX(-3px); }
  30%, 70% { transform: translateX(5px); }
  50%      { transform: translateX(-5px); }
}

/* the little hop a correct group does before it resolves */
.tile.hop { animation: hop 380ms ease; }
@keyframes hop { 40% { transform: translateY(-9px); } }

/* ---------- solved band ---------- */

.band {
  display: grid;
  place-items: center;
  gap: 2px;
  aspect-ratio: 4 / 0.62;
  border-radius: var(--radius);
  color: var(--band-ink);
  padding: 6px;
  text-align: center;
  animation: reveal 260ms ease;
}
@keyframes reveal { from { opacity: 0; transform: scale(0.96); } }

.band.l0 { background: var(--l0); }
.band.l1 { background: var(--l1); }
.band.l2 { background: var(--l2); }
.band.l3 { background: var(--l3); }

.band-name {
  font-size: clamp(0.68rem, 2.7vw, 0.92rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  overflow-wrap: break-word;
}
.band-words {
  font-size: clamp(0.62rem, 2.4vw, 0.85rem);
  letter-spacing: 0.02em;
  overflow-wrap: break-word;
}

/* Long phrase answers need the room; let tall bands grow rather than clip. */
.band {
  aspect-ratio: auto;
  min-height: max(64px, 15vw);
}
@media (min-width: 640px) {
  .band { min-height: 92px; }
}

/* ---------- status ---------- */

.toast {
  min-height: 1.4em;
  margin: 14px 0 0;
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0;
  transition: opacity 140ms ease;
}
.toast.show { opacity: 1; }

.mistakes {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 6px 0 18px;
  font-size: 0.9rem;
}
.mistakes-label { color: var(--ink-soft); }
.dots { display: flex; gap: 8px; }
.dot {
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--tile-on);
  transition: opacity 200ms ease, transform 200ms ease;
}
.dot.spent { opacity: 0.18; transform: scale(0.82); }

/* ---------- buttons ---------- */

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.btn {
  padding: 12px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 90ms ease, opacity 90ms ease;
}
.btn:hover:not(:disabled) { background: var(--tile); }
.btn:disabled { opacity: 0.35; cursor: default; }
.btn-primary {
  background: var(--ink);
  color: var(--bg);
}
.btn-primary:hover:not(:disabled) { background: var(--ink); opacity: 0.85; }

/* ---------- endgame ---------- */

.endgame {
  margin-top: 22px;
  text-align: center;
}
.endgame-title {
  margin: 0 0 10px;
  font-size: 1.15rem;
  font-weight: 700;
}
.share-grid {
  margin: 0 0 16px;
  font-family: inherit;
  font-size: 1.35rem;
  line-height: 1.25;
  letter-spacing: 0.08em;
}

/* ---------- sheets ---------- */

.sheet { position: fixed; inset: 0; z-index: 40; }
.sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  animation: fade 160ms ease;
}
@keyframes fade { from { opacity: 0; } }

.sheet-panel {
  position: absolute;
  inset: auto 0 0 0;
  max-height: 85dvh;
  overflow-y: auto;
  background: var(--surface);
  border-radius: 16px 16px 0 0;
  padding: 16px 18px calc(28px + env(safe-area-inset-bottom));
  animation: rise 200ms ease;
}
@keyframes rise { from { transform: translateY(24px); opacity: 0; } }

@media (min-width: 640px) {
  .sheet-panel {
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    width: min(560px, 92vw);
    border-radius: 14px;
    max-height: 80dvh;
  }
  @keyframes rise { from { transform: translate(-50%, calc(-50% + 16px)); opacity: 0; } }
}

.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.sheet-head h2 { margin: 0; font-size: 1.05rem; letter-spacing: 0.06em; text-transform: uppercase; }
.sheet-note { margin: 0 0 14px; font-size: 0.85rem; color: var(--ink-soft); }

.archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.archive-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: inherit;
  font-family: inherit;
  font-size: 0.92rem;
  text-align: left;
  cursor: pointer;
}
.archive-item:hover { background: var(--tile); }
.archive-item[aria-current="true"] { border-color: var(--ink); border-width: 2px; }

.archive-no { font-weight: 700; min-width: 2.4em; }
.archive-date { flex: 1; color: var(--ink-soft); }
.archive-state { font-size: 0.8rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.archive-state.won { color: var(--l1); }
.archive-state.lost { color: var(--l3); }
.archive-state.part { color: var(--ink-soft); }

.help-body { font-size: 0.94rem; line-height: 1.55; }
.help-body ul { padding-left: 1.2em; }
.help-legend { margin-bottom: 6px; }
.legend { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.legend li { display: flex; align-items: center; gap: 10px; font-size: 0.88rem; color: var(--ink-soft); }
.sw { width: 26px; height: 14px; border-radius: 3px; display: inline-block; }
.sw.l0 { background: var(--l0); }
.sw.l1 { background: var(--l1); }
.sw.l2 { background: var(--l2); }
.sw.l3 { background: var(--l3); }
.help-foot { color: var(--ink-soft); font-size: 0.85rem; }
kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8em;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}