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

.page-shell {
  display: grid;
  min-height: 100vh;
  padding: 28px;
  place-items: center;
}

.game-card {
  width: min(100%, 940px);
  padding: clamp(26px, 5vw, 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: 34px;
}

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

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

.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,
h2 {
  color: var(--navy);
  font-family: var(--serif);
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(2.35rem, 7vw, 4.15rem);
  line-height: 1;
}

h2 {
  margin-bottom: 8px;
  font-size: clamp(1.65rem, 4vw, 2.25rem);
  line-height: 1.08;
}

.intro {
  max-width: 590px;
  margin: 0 auto 22px;
  color: #3e4142;
  font-size: 1.08rem;
  line-height: 1.58;
}

.mechanic-preview {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0 auto 28px;
}

.mechanic-preview p {
  margin: 0;
  padding: 7px 10px;
  border: 1px solid #d8cd9a;
  border-radius: 999px;
  color: var(--navy);
  background: rgba(239, 232, 201, 0.58);
  font: 800 0.72rem var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mechanic-preview span {
  margin-right: 4px;
  color: var(--gold-dark);
  font-size: 1rem;
}

.level-instruction {
  margin-bottom: 12px;
  color: var(--gold-dark);
  font: 800 0.84rem var(--sans);
}

.difficulty-options {
  display: grid;
  gap: 10px;
  max-width: 580px;
  margin: 0 auto;
  text-align: left;
}

.difficulty-option {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3px 14px;
  min-height: 72px;
  padding: 14px 16px;
  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,
.answer-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-option span {
  font: 900 0.76rem var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.difficulty-option strong {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font: 800 1.15rem var(--serif);
}

.difficulty-option small {
  color: var(--muted);
  font: 0.86rem var(--serif);
}

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

.game-interface[hidden],
.start-screen[hidden] {
  display: none;
}

.game-status {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  width: min(100%, 470px);
  margin: 0 auto 14px;
}

.game-status p {
  margin: 0;
  padding: 10px 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  background: rgba(255, 253, 246, 0.78);
  font: 800 0.65rem var(--sans);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.game-status strong {
  display: block;
  margin-top: 2px;
  color: var(--navy);
  font-size: 1.08rem;
}

.selected-mode,
.modifier-name {
  display: inline-flex;
  margin: 0 4px 10px;
  padding: 6px 10px;
  border-radius: 999px;
  font: 800 0.68rem var(--sans);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.selected-mode {
  border: 1px solid #d4c889;
  color: var(--navy);
  background: var(--gold-soft);
}

.modifier-name {
  border: 1px solid #c7d1da;
  color: var(--navy-3);
  background: #edf2f5;
}

.puzzle-instruction {
  max-width: 560px;
  margin: 0 auto 10px;
  color: #3e4142;
  line-height: 1.5;
}

.mechanic-guide {
  display: grid;
  gap: 5px;
  width: min(100%, 420px);
  min-height: 70px;
  margin: 0 auto 18px;
  padding: 9px 12px;
  border: 1px solid #d6d1c0;
  border-radius: 14px;
  color: var(--navy);
  background: rgba(255, 253, 246, 0.73);
}

.mechanic-guide p {
  margin: 0;
  color: var(--muted);
  font: 0.78rem/1.3 var(--sans);
}

.guide-visual {
  display: flex;
  min-height: 29px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--sans);
}

.guide-visual--giro span {
  color: var(--navy);
  font-size: 1.38rem;
  line-height: 1;
}

.guide-visual--giro b {
  color: var(--gold-dark);
  font-size: 0.68rem;
  white-space: nowrap;
}

.guide-side-count {
  display: grid;
  width: 26px;
  height: 26px;
  color: var(--navy);
  background: #9ac9de;
  font: 900 0.72rem/1 var(--sans);
  place-items: center;
}

.guide-side-count--triangle {
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  padding-top: 5px;
}

.guide-side-count--square {
  border-radius: 4px;
  color: #8f412f;
  background: #eeb097;
}

.guide-side-count--fusion {
  clip-path: polygon(50% 0, 89% 19%, 98% 61%, 72% 95%, 28% 95%, 2% 61%, 11% 19%);
  color: #665b20;
  background: #e5cf72;
}

.guide-visual--fusao b,
.guide-visual--roubo b {
  color: var(--gold-dark);
  font: 900 1rem/1 var(--sans);
}

.guide-property {
  padding: 5px 8px;
  border-radius: 999px;
  font: 800 0.66rem/1 var(--sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.guide-property--shape {
  border: 1px solid #7db1c8;
  color: #176485;
  background: #e2f1f7;
}

.guide-property--color {
  border: 1px solid #e4a187;
  color: #9a4a35;
  background: #fae3db;
}

.guide-property--result {
  border: 1px solid #d4c47a;
  color: #65591a;
  background: #f4edc8;
}

.matrix-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(5px, 1vw, 10px);
  width: min(100%, 420px);
  margin: 0 auto 14px;
  padding: clamp(9px, 2vw, 14px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 246, 0.57);
}

.matrix-cell {
  position: relative;
  display: grid;
  min-height: clamp(76px, 16vw, 112px);
  padding: 8px;
  border: 1px solid rgba(215, 208, 190, 0.9);
  border-radius: 13px;
  color: var(--navy);
  background: var(--white);
  place-items: center;
  transition: background 180ms ease, border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.matrix-cell.has-cue {
  padding-bottom: 25px;
}

.cell-cue {
  position: absolute;
  right: 6px;
  bottom: 5px;
  left: 6px;
  overflow: hidden;
  color: var(--gold-dark);
  font: 800 0.59rem/1.1 var(--sans);
  letter-spacing: 0.025em;
  text-align: center;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.matrix-cell.is-missing {
  border-style: dashed;
  border-color: var(--gold);
  color: var(--gold-dark);
  background: linear-gradient(145deg, #fff8d9, #efe3ae);
}

.matrix-cell.is-revealed {
  animation: reveal-piece 350ms ease both;
}

.matrix-cell.is-correct-answer {
  border-color: var(--gold);
  background: var(--gold-soft);
  box-shadow: 0 0 0 3px rgba(168, 149, 76, 0.12);
}

.missing-mark {
  font: 800 clamp(2rem, 7vw, 3.2rem) / 1 var(--serif);
}

.token-svg {
  display: block;
  width: min(78%, 78px);
  height: auto;
}

.arrow-token {
  color: var(--navy);
  transform: rotate(var(--turn));
  transition: transform 240ms ease;
}

.shape-token {
  width: min(70%, 70px);
}

.shape-fill {
  fill: var(--shape-fill);
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 3;
}

.shape-shine {
  opacity: 0.7;
}

.color-blue {
  --shape-fill: #78b6d1;
  color: #176485;
}

.color-coral {
  --shape-fill: #e99678;
  color: #a84d38;
}

.color-gold {
  --shape-fill: #e2c65a;
  color: #8d7418;
}

.color-violet {
  --shape-fill: #bfa6dc;
  color: #604480;
}

.fusion-token {
  width: min(75%, 78px);
  color: var(--gold-dark);
}

.fusion-shape {
  fill: #e8d88e;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 3;
}

.rule-hint {
  min-height: 46px;
  max-width: 620px;
  margin: 0 auto 14px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: var(--muted);
  font: 0.92rem/1.42 var(--serif);
}

.rule-hint.is-revealed {
  border-color: #d9ce99;
  color: #534b2c;
  background: rgba(239, 232, 201, 0.57);
}

.answer-options {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px;
  width: min(100%, 580px);
  margin: 0 auto;
}

.answer-option {
  position: relative;
  display: grid;
  min-height: 124px;
  padding: 12px 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--navy);
  background: rgba(255, 253, 246, 0.88);
  cursor: pointer;
  place-items: center;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 160ms ease, background 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.answer-option:hover:not(:disabled) {
  border-color: var(--gold);
  box-shadow: var(--soft);
  transform: translateY(-2px);
}

.answer-option:disabled {
  cursor: default;
}

.answer-option .token-svg {
  width: min(70%, 58px);
}

.answer-number {
  position: absolute;
  top: 8px;
  left: 8px;
  display: grid;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  color: var(--white);
  background: var(--navy);
  font: 800 0.66rem/1 var(--sans);
  place-items: center;
}

.answer-label {
  margin-top: 5px;
  color: var(--muted);
  font: 800 0.64rem/1.25 var(--sans);
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.answer-option.is-correct {
  border-color: #779154;
  background: #e7efd9;
  box-shadow: 0 0 0 3px rgba(119, 145, 84, 0.14);
}

.answer-option.is-wrong {
  border-color: #bd705d;
  background: #f7e5df;
}

.feedback {
  min-height: 25px;
  margin: 15px 0 10px;
  color: var(--gold-dark);
  font: 800 0.9rem var(--sans);
}

.button {
  min-height: 48px;
  padding: 12px 20px;
  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);
}

.next-button[hidden] {
  display: none;
}

.result-dialog {
  width: min(calc(100% - 32px), 510px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.result-dialog::backdrop {
  background: rgba(3, 12, 22, 0.78);
}

.result-dialog__content {
  padding: clamp(28px, 6vw, 42px);
  text-align: center;
}

.result-dialog__content > p:not(.eyebrow) {
  margin-bottom: 22px;
  color: #3e4142;
  font-size: 1.05rem;
  line-height: 1.55;
}

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

@keyframes reveal-piece {
  from {
    opacity: 0;
    transform: scale(0.72) rotate(-9deg);
  }

  to {
    opacity: 1;
    transform: scale(1) rotate(0);
  }
}

@media (max-width: 600px) {
  .page-shell {
    padding: 12px;
  }

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

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

  .selected-mode,
  .modifier-name {
    margin-bottom: 7px;
  }

  .matrix-board {
    width: min(100%, 370px);
  }

  .answer-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: min(100%, 360px);
  }

  .answer-option {
    min-height: 105px;
  }

  .result-dialog__actions .button {
    width: 100%;
  }

  body.game-in-progress .page-shell {
    min-height: 100dvh;
    padding: 0;
    place-items: stretch;
  }

  body.game-in-progress .game-card {
    width: 100%;
    min-height: 100dvh;
    padding: 16px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  body.game-in-progress .game-navigation {
    display: none;
  }

  body.game-in-progress .game-interface {
    display: flex;
    min-height: calc(100dvh - 32px);
    flex-direction: column;
    justify-content: center;
  }
}

@media (max-width: 360px) {
  .game-status p {
    padding-inline: 4px;
    font-size: 0.59rem;
  }

  .matrix-cell {
    min-height: 70px;
  }

  .answer-label {
    font-size: 0.58rem;
  }
}