```css
* {
  box-sizing: border-box;
}

:root {
  --ink: #20242a;
  --muted: #68717d;
  --paper: #fffdf8;
  --panel: #f4f0e8;
  --line: #c9c1b3;
  --accent: #315c4c;
  --accent2: #d6a84f;
  --wrong: #b64d46;
  --right: #3d795c;
}

body {
  margin: 0;
  background: #e9e4da;
  color: var(--ink);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 22px 34px;
}


/* -------------------------------------------------
   Header
   ------------------------------------------------- */

.hero {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 24px;
}

h1 {
  font-family: Georgia, serif;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 0.9;
  margin: 0 0 10px;
  letter-spacing: -2px;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.controls label {
  color: var(--muted);
  font-weight: 650;
}

.daily-badge {
  display: inline-flex;
  align-items: center;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--accent);
  font-weight: 750;
  text-decoration: none;
cursor: pointer;
}


/* -------------------------------------------------
   Buttons / controls
   ------------------------------------------------- */

select,
button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 13px;
  background: white;
  font: inherit;
  cursor: pointer;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.secondary {
  background: var(--panel);
}


/* -------------------------------------------------
   Main game layout
   ------------------------------------------------- */

.game {
  display: grid;
  grid-template-columns: minmax(300px, 560px) 1fr;
  gap: 30px;
  align-items: start;
}

.board-wrap {
  background: var(--paper);
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 8px 25px #0000000b;
}


/* -------------------------------------------------
   Status message
   ------------------------------------------------- */

.status {
  min-height: 24px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
}

.status.error {
  color: var(--wrong);
}

.status.success {
  color: var(--right);
}


/* -------------------------------------------------
   Crossword grid
   ------------------------------------------------- */

.grid {
  display: grid;
  width: min(100%, 520px);
  aspect-ratio: 1;
  margin: auto;
  background: #15181b;
  gap: 1px;
  border: 2px solid #15181b;
}

.cell {
  position: relative;
  background: #fffdf8;
  min-width: 0;
}

.cell.block {
  background: #15181b;
}

.cell input {
  width: 100%;
  height: 100%;
  border: 0;
  outline: 0;
  padding: 15% 3% 0;
  background: transparent;
  text-align: center;
  font-weight: 800;
  font-size: clamp(16px, 3.4vw, 29px);
  text-transform: uppercase;
  color: var(--ink);
  caret-color: var(--accent);
}

.cell input:focus {
  box-shadow: inset 0 0 0 3px var(--accent2);
}

.cell .number {
  position: absolute;
  top: 2px;
  left: 3px;
  font-size: clamp(8px, 1.5vw, 12px);
  font-weight: 700;
  color: #4b5258;
  pointer-events: none;
}

.cell.correct {
  background: #e6f2e9;
}

.cell.incorrect {
  background: #f9dfdc;
}


/* -------------------------------------------------
   Check / Share buttons
   ------------------------------------------------- */

.check {
  width: 100%;
  margin-top: 14px;
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  font-weight: 750;
}

.check:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.share {
  width: 100%;
  margin-top: 10px;
  background: var(--accent2);
  color: var(--ink);
  border-color: var(--accent2);
  font-weight: 750;
}

.share[hidden] {
  display: none;
}


/* -------------------------------------------------
   Clues
   ------------------------------------------------- */

.clues {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.clues section {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
}

h2 {
  font-family: Georgia, serif;
  margin: 0 0 10px;
  font-size: 25px;
}

.clue-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.clue-list li {
  list-style: none;
  padding: 5px 4px;
  cursor: pointer;
  line-height: 1.35;
  border-radius: 6px;
}

li:hover {
  background: #eee9df;
}

li.active {
  background: #e7dfce;
  font-weight: 700;
}


/* -------------------------------------------------
   Footer
   ------------------------------------------------- */

footer {
  margin-top: 20px;
  padding: 16px 2px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.footer-top,
.footer-progress {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 15px;
}

.footer-progress {
  margin-top: 8px;
  font-size: 12px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

#progress {
  white-space: nowrap;
  font-weight: 700;
  color: var(--accent);
}


/* -------------------------------------------------
   Tablet
   ------------------------------------------------- */

@media (max-width: 780px) {

  .hero {
    align-items: start;
    flex-direction: column;
  }

  .game {
    grid-template-columns: 1fr;
  }

  .clues {
    grid-template-columns: 1fr 1fr;
  }
}


/* -------------------------------------------------
   Mobile
   ------------------------------------------------- */

@media (max-width: 520px) {

  .app {
    padding: 18px 10px 25px;
  }

  .board-wrap {
    padding: 10px;
  }

  .clues {
    grid-template-columns: 1fr;
  }

  .cell input {
    padding-top: 18%;
  }

  .footer-top {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .footer-progress {
    align-items: flex-start;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}
```