* {
  font-family: Inter, system-ui, Segoe UI, Arial, sans-serif;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #f3f4f6;
  color: #111827;
  width: 100%;
  min-height: 100vh;
}

header {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-direction: column;
}

.controls {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 15px;
  margin-bottom: 0;
  flex-wrap: wrap;
}

.controls > button {
  margin-bottom: 0;
}

h1 {
  text-align: center;
  font-weight: 700;
  font-size: 30px;
}

h2 {
  font-size: 30px;
}

button {
  padding: 8px 12px;
  border-radius: 8px;
  border: 0;
  background: #e5e7eb;
  color: #111827;
  cursor: pointer;
}

.game-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin: 1px 0;
  width: 100%;
}

.grid-container {
  display: grid;
  justify-content: center;
  grid-gap: 8px;
  grid-template-columns: repeat(6, 100px);
  grid-template-rows: repeat(2, calc(100px / 2 * 3));
}

.card {
  height: calc(100px / 2 * 3);
  width: 100px;
  border-radius: 10px;
  background-color: #cedfeb;
  position: relative;
  transform-style: preserve-3d;
  transition: all 0.375s ease-in-out;
}

.front-image {
  width: 45px;
  height: 45px;
}

.card.flipped {
  transform: rotateY(180deg);
}

.front,
.back {
  backface-visibility: hidden;
  position: absolute;
  border-radius: 10px;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
}

.card .front {
  display: flex;
  justify-content: center;
  align-items: center;
  transform: rotateY(180deg);
}

.card .back {
  background-color: rgb(0, 153, 255);
}

.info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.score-actions {
  display: flex;
  align-items: center;
  gap: 15px;
}

.Bp {
  text-align: center;
  font-weight: bold;
  font-size: 30px;
}

.actions {
  display: flex;
  gap: 10px;
}

.actions button {
  padding: 8px 16px;
  font-size: 30px;
  border-radius: 10px;
  color: #111827;
  background: #e5e7eb;
}

.popv {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.popv-conteudo {
  background: #ffffff;
  padding: 25px;
  border-radius: 15px;
  text-align: center;
  width: 300px;
  max-width: 90%;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  animation: aparecer 0.3s ease-out;
  color: #111827;
}

.popv .btn {
  display: inline-block;
  margin: 10px;
  padding: 10px 20px;
  background-color: #3b82f6;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
}

.popv .btn:hover {
  background-color: #60a5fa;
}

#comoj {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

#comoj .conteudo {
  background: white;
  padding: 18px;
  border-radius: 10px;
  max-width: 90%;
  color: #111827;
}

@media (prefers-color-scheme: dark) {
  body {
    background-color: #111827;
    color: #e6edf3;
  }

  button,
  .actions button {
    background: #1f2937;
    color: #e6edf3;
  }

  .card {
    background-color: #1f2937;
  }

  .card .back {
    background-image: url("data:image/svg+xml,<svg id='patternId' width='100%' height='100%' xmlns='http://www.w3.org/2000/svg'><defs><pattern id='a' patternUnits='userSpaceOnUse' width='40' height='40' patternTransform='scale(2) rotate(0)'><rect x='0' y='0' width='100%' height='100%' fill='hsla(240,6.7%,17.6%,1)'/><path d='M0 0h10v20H0zM30 0v10H10V0zM10 10h10v20H10zM40 10v10H20V10zM20 20h10v20h-10zM50 20v10h-20V20zM30 30h10v20H30zM20 30v10H0V30zM10 20v10H-10V20z' stroke-width='1' stroke='hsla(47,80.9%,61%,1)' fill='none'/></pattern></defs><rect width='800%' height='800%' fill='url(%23a)'/></svg>");
  }

  .popv {
    background-color: rgba(255, 255, 255, 0.045);
  }

  #comoj .conteudo,
  .popv-conteudo {
    background: #0f1724;
    color: #e6edf3;
  }
}

@media (max-width: 1440px) {
  .grid-container {
    grid-template-columns: repeat(6, 90px);
    grid-template-rows: repeat(2, calc(90px / 2 * 3));
  }

  .card {
    width: 90px;
    height: calc(90px / 2 * 3);
  }

  .front-image {
    width: 40px;
    height: 40px;
  }

  .actions button {
    font-size: 26px;
    padding: 7px 14px;
  }
}

@media (max-width: 1024px) {
  .grid-container {
    grid-template-columns: repeat(6, 80px);
    grid-template-rows: repeat(2, calc(80px / 2 * 3));
  }

  .card {
    width: 80px;
    height: calc(80px / 2 * 3);
  }

  .front-image {
    width: 35px;
    height: 35px;
  }

  .actions button {
    font-size: 24px;
    padding: 6px 12px;
  }
}

@media (max-width: 768px) {
  .grid-container {
    grid-template-columns: repeat(6, 70px);
    grid-template-rows: repeat(2, calc(70px / 2 * 3));
  }

  .card {
    width: 70px;
    height: calc(70px / 2 * 3);
  }

  .front-image {
    width: 30px;
    height: 30px;
  }

  h1,
  h2 {
    font-size: 24px;
  }

  .Bp {
    font-size: 24px;
  }

  .actions button {
    font-size: 20px;
  }
}

@media (max-width: 480px) {
  .grid-container {
    grid-template-columns: repeat(6, 60px);
    grid-template-rows: repeat(2, calc(60px / 2 * 3));
  }

  .card {
    width: 60px;
    height: calc(60px / 2 * 3);
  }

  .front-image {
    width: 25px;
    height: 25px;
  }

  h1,
  h2 {
    font-size: 20px;
  }

  .Bp {
    font-size: 20px;
  }

  .actions button {
    font-size: 16px;
  }

  .game-area {
    margin: 0 auto;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
  }
}