body {
  display: grid;
  min-width: 320px;
  min-height: 100vh;
}

.page-shell {
  display: grid;
  padding: 28px;
  place-items: center;
}

.game-card {
  width: min(100%, 560px);
  padding: clamp(28px, 6vw, 48px);
  border: 1px solid var(--line);
  border-radius: 34px;
  background: linear-gradient(135deg, var(--surface), #f7f1e4);
  box-shadow: var(--shadow);
  text-align: center;
}

.game-navigation {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.game-navigation .brand-lock {
  gap: 8px;
  text-align: left;
}

.game-navigation .brand-mark {
  width: 38px;
  height: 38px;
  font-size: 21px;
}

.game-navigation .brand-name {
  font-size: 1.05rem;
}

.game-navigation .brand-name small {
  font-size: 0.53rem;
}

.back-link {
  color: var(--navy);
  font: 800 0.82rem var(--sans);
  text-decoration: none;
}

.back-link:hover {
  color: var(--gold-dark);
  text-decoration: underline;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  color: var(--navy);
  font: 800 clamp(2.2rem, 7vw, 3.7rem) / 1 var(--serif);
}

h2 {
  margin-bottom: 18px;
  color: var(--navy);
  font: 800 clamp(1.55rem, 4vw, 2rem) / 1.1 var(--serif);
}

.intro {
  margin-bottom: 14px;
  color: #3e4142;
  font-size: 1.05rem;
  line-height: 1.55;
}

.game-highlights {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0 0 30px;
}

.game-highlights span {
  padding: 8px 11px;
  border: 1px solid #c7b76d;
  border-radius: 999px;
  color: var(--navy);
  background: #fff6d6;
  font: 900 0.72rem/1 var(--sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.difficulty-screen {
  text-align: left;
}

.difficulty-intro {
  margin: -8px 0 16px;
  color: #50504a;
  font-size: 0.98rem;
  line-height: 1.45;
}

.difficulty-options {
  display: grid;
  gap: 12px;
}

.difficulty-option {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  width: 100%;
  padding: 17px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--navy);
  background: rgba(255, 253, 246, 0.88);
  cursor: pointer;
  text-align: left;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.difficulty-option:hover {
  border-color: var(--gold);
  box-shadow: var(--soft);
  transform: translateY(-2px);
}

.difficulty-option:focus-visible {
  outline: 3px solid var(--gold-2);
  outline-offset: 3px;
}

.difficulty-option:nth-child(2) {
  background: linear-gradient(135deg, var(--gold-soft), #fffaf0);
  border-color: #c8ba78;
}

.difficulty-option:nth-child(3) {
  color: var(--white);
  background: linear-gradient(145deg, var(--navy), var(--navy-3));
  border-color: var(--navy-3);
}

.difficulty-name {
  font: 900 0.74rem var(--sans);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.difficulty-option strong {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font: 800 1.3rem var(--serif);
}

.difficulty-option small {
  color: var(--muted);
  font: 0.88rem var(--serif);
}

.difficulty-option:nth-child(3) small {
  color: #dbe4eb;
}

.game-area[hidden],
.difficulty-screen[hidden] {
  display: none;
}

.selected-level {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 7px 11px;
  border: 1px solid #d4c889;
  border-radius: 999px;
  color: var(--navy);
  background: var(--gold-soft);
  font: 800 0.73rem var(--sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.instruction {
  margin-bottom: 28px;
  color: #3e4142;
  font-size: 1.05rem;
  line-height: 1.55;
}

.guess-form {
  text-align: left;
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--gold-dark);
  font: 900 0.72rem var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.input-row {
  display: flex;
  gap: 10px;
}

input {
  width: 100%;
  min-width: 0;
  min-height: 54px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: var(--white);
  font-size: 1.1rem;
}

.button {
  min-height: 54px;
  padding: 12px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #071523;
  background: var(--gold-2);
}

.button-primary:hover {
  background: var(--gold);
}

.button-secondary {
  border-color: var(--line);
  color: var(--navy);
  background: var(--surface);
}

.button-secondary:hover {
  background: var(--navy-soft);
}

.button-tertiary {
  border-color: transparent;
  color: var(--navy);
  background: transparent;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.feedback {
  min-height: 48px;
  margin: 24px 0 8px;
  color: var(--gold-dark);
  font: 800 0.98rem var(--sans);
  line-height: 1.45;
}

.guess-history {
  margin: 0 0 24px;
  padding: 16px;
  border: 1px solid #b9cfae;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(255, 253, 246, 0.9), rgba(239, 248, 240, 0.86));
  box-shadow: 0 8px 18px rgba(21, 86, 76, 0.1);
  text-align: left;
}

.guess-history__title {
  margin-bottom: 12px;
  color: var(--navy);
  font: 900 0.78rem var(--sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.attempts {
  color: var(--muted);
}

.guess-history__empty {
  margin: 0;
  color: var(--muted);
  font: 0.95rem / 1.4 var(--serif);
}

.guess-history__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guess-history__item {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--navy);
  background: var(--navy-soft);
  font: 800 0.78rem var(--sans);
}

.guess-history__item strong {
  font-size: 1rem;
}

.guess-history__item--higher {
  border-color: #b8d6be;
  background: #e8f3ec;
}

.guess-history__item--lower {
  border-color: #ecc5b5;
  background: #f9ebe5;
}

.guess-history__item--correct {
  border-color: #93c6a1;
  color: #083c2d;
  background: #d8efdf;
}

.game-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

@media (max-width: 420px) {
  .page-shell {
    padding: 12px;
  }

  .game-card {
    border-radius: 22px;
  }

  .game-navigation {
    flex-direction: column-reverse;
    align-items: center;
    margin-bottom: 26px;
  }

  .input-row {
    flex-direction: column;
  }

  .game-actions .button {
    width: 100%;
  }
}