* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Poppins", sans-serif;
  background-color: transparent;
  margin: 0;
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(8, auto);
  gap: 2rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

/* Contenedor de cada fila región */
.region-row {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0;
  text-align: center;
}

/* Regiones 1-8 en columna 1 */
.region-row:nth-of-type(1) { grid-column: 1; grid-row: 1; }
.region-row:nth-of-type(2) { grid-column: 1; grid-row: 2; }
.region-row:nth-of-type(3) { grid-column: 1; grid-row: 3; }
.region-row:nth-of-type(4) { grid-column: 1; grid-row: 4; }
.region-row:nth-of-type(5) { grid-column: 1; grid-row: 5; }
.region-row:nth-of-type(6) { grid-column: 1; grid-row: 6; }
.region-row:nth-of-type(7) { grid-column: 1; grid-row: 7; }
.region-row:nth-of-type(8) { grid-column: 1; grid-row: 8; }

/* Regiones 9-16 en columna 2 */
.region-row:nth-of-type(9) { grid-column: 2; grid-row: 1; }
.region-row:nth-of-type(10) { grid-column: 2; grid-row: 2; }
.region-row:nth-of-type(11) { grid-column: 2; grid-row: 3; }
.region-row:nth-of-type(12) { grid-column: 2; grid-row: 4; }
.region-row:nth-of-type(13) { grid-column: 2; grid-row: 5; }
.region-row:nth-of-type(14) { grid-column: 2; grid-row: 6; }
.region-row:nth-of-type(15) { grid-column: 2; grid-row: 7; }
.region-row:nth-of-type(16) { grid-column: 2; grid-row: 8; }

/* Estilos base para selector y botón */
select,
button {
  font-family: "Poppins", sans-serif;
  font-size: 1rem;
  padding: 0;
  border-radius: 8px;
  border: none;
  height: 48px;
}

.select-wrapper {
  position: relative;
  display: inline-block;
  width: 100%;
  max-width: 320px;
  min-width: 220px;
}

select {
  background-color: #00953b;
  color: white;
  padding: 0.7rem 2.5rem 0.7rem 1.5rem;
  line-height: 1.4;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
  width: 100%;
}

/* Flecha del select */
.select-wrapper::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 1.5rem;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7' /%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  pointer-events: none;
}

button {
  background-color: #00953b;
  color: white;
  cursor: pointer;
  margin: 0 0 0 1rem;
  width: 130px;
}

button:hover {
  background-color: #4eab64;
}

@media (max-width: 1020px) {

  body {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  /* Reset explicit grid positioning for mobile */
  .region-row:nth-of-type(1) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(2) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(3) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(4) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(5) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(6) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(7) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(8) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(9) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(10) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(11) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(12) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(13) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(14) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(15) { grid-column: auto; grid-row: auto; }
  .region-row:nth-of-type(16) { grid-column: auto; grid-row: auto; }

  button {
    margin: 0 0 0 0.5rem;
  }
}

@media (max-width: 600px) {
  .region-row {
    flex-direction: column;
    align-items: center;
  }

  .select-wrapper {
    display: block;
    margin: 0 auto;
  }

  button {
    display: block;
    margin: 0.5rem auto 0 auto;
  }
}