:root {
  --tamano: 350px;
  --grados: 45deg;
  --rotacion: 0deg;
  --color-impar: turquoise;
  --color-par: yellow;
  --color-borde: #000;
  --color-flecha: black;
  --color-centro: red;
  --color-divisor: #449;
}

/* Popup */
.popup-ruleta {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.ruleta-container {
  background: #fff;
  padding: 20px;
  border-radius: 20px;
  text-align: center;
  position: relative;
  display: inline-block;
}

/* Ruleta */
#ruleta {
  position: relative;
  width: var(--tamano);
  height: var(--tamano);
  background-color: red;
  border-radius: 50%;
  border: calc(var(--tamano)/30) solid var(--color-borde);
  will-change: transform;
  transition: transform 10s cubic-bezier(0,0,0.3,1);
  transform: rotate(var(--rotacion));
  box-shadow: 0px 0px calc(var(--tamano)/20) black;
  margin: auto;
}

/* Triángulo indicador */
#triangulo {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: calc(var(--tamano)/15) solid transparent;
  border-right: calc(var(--tamano)/15) solid transparent;
  border-bottom: calc(var(--tamano)/5) solid var(--color-flecha);
}

/* Triángulo centro */
#triangulo:after {
  position: absolute;
  width: calc(var(--tamano)/15);
  height: calc(var(--tamano)/15);
  top: 100%;
  left: 50%;
  transform: translate(-50%, 260%);
  content: "";
  background-color: var(--color-centro);
  border-radius: 50%;
  box-shadow: 0px 0px calc(var(--tamano)/20) black;
}

/* Sectores y divisores */
#sectores, #divisores, #caras {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

/* Sectores */
#sectores div {
  position: absolute;
  top: 0%; left: 50%;
  width: calc(var(--tamano)/2); height: calc(var(--tamano)/2);
  transform-origin: 0% 100%;
  transform: rotate(calc(-90deg + var(--grados)/2 + var(--grados)*var(--posicion))) skew(calc((90deg - var(--grados))*-1));
}

#sectores div::before {
  position: absolute;
  width: inherit; height: inherit;
  border-radius: 0 100% 0 0;
  background-image: linear-gradient(45deg,var(--color-impar),black);
  content: "";
  transform-origin: 0% 100%;
  transform: skew(90deg - var(--grados));
}

#ruleta div:nth-child(even)::before {
  background-image: linear-gradient(45deg,var(--color-par),black);
}

/* Divisores */
#divisores div {
  position: absolute;
  top: 50%; left: 50%;
  width: calc(var(--tamano)/40); height: calc(var(--tamano)/2);
  background-color: var(--color-divisor);
  transform-origin: 0 0;
  transform: rotate(calc(var(--grados)/2 + var(--grados)*var(--posicion))) translate(-50%,-100%);
}

/* Caras */
#caras div {
  position: absolute;
  top: 50%; left: 50%;
  width: calc(var(--tamano)/6); height: calc(var(--tamano)/6);
  background-color: blueviolet;
  border-radius: 50%;
  transform-origin: 0 0;
  transform: rotate(calc(var(--grados)*var(--posicion))) translate(0, calc(-1*var(--tamano)/2.7)) translate(-50%,-50%);
}

/* Posiciones */
div:nth-child(1) {--posicion:0}
div:nth-child(2) {--posicion:1}
div:nth-child(3) {--posicion:2}
div:nth-child(4) {--posicion:3}
div:nth-child(5) {--posicion:4}
div:nth-child(6) {--posicion:5}
div:nth-child(7) {--posicion:6}
div:nth-child(8) {--posicion:7}