.circle-keyboard-container {
  position: relative;
  width: 400px;
  height: 400px;
  margin: 50px auto;
  background: #f5f5f5;
}

/* Center Button Container */
.center-button-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  z-index: 1;
}

/* Center Button Sections */
.center-section {
  position: absolute;
  background: white;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
  border: 2px solid #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Top-left: Backspace (triangle) */
.top-left{
  top: 0;
  left: 0;
  width: 70px;
  height: 70px;
  border-radius: 70px 0 0 0;
}

/* Top-right: Enter*/
.top-right {
  top: 0;
  right: 0;
  width: 70px;
  height: 70px;
  border-radius: 0 70px 0 0;
}

/* Bottom: Space */
.bottom-left {
  bottom: 0;
  left: 0;
  width: 70px;
  height: 70px;
  border-radius: 0 0 0 70px;
}

.bottom-left.active {
  background: #4CAF50 !important;
  color: white;
  border-color: #45a049;
}

.bottom-right {
    bottom: 0;
    right: 0;
    width: 70px;
    height: 70px;
    border-radius: 0 0 70px 0;
}

.middle-left {
  top: 50%;
  left: 50%;
  transform: translate(-100%, -50%);
  width: 30px;
  height: 55px;
  border-radius: 35px 0 0 35px;
  z-index: 15;
}

.middle-right {
  top: 50%;
  left: 50%;
  transform: translate(0%, -50%);
  width: 30px;
  height: 55px;
  border-radius: 0 35px 35px 0;
  z-index: 15;
}

/* 8 Circle Buttons */
.circle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 70px;
  height: 70px;
  margin: -35px 0 0 -35px;
  border-radius: 50%;
  border: 2px solid #ddd;
  background: white;
  font-size: 24px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  z-index: 1;
}

.second-ring {
    width: 50px;
    height: 50px;
    font-size: 20px;
    font-weight: normal;
    margin: -25px 0 0 -25px;
}

.third-ring {
    width: 40px;
    height: 40px;
    font-size: 18px;
    font-weight: normal;
    margin: -20px 0 0 -20px;
}

.fourth-ring {
    width: 30px;
    height: 30px;
    font-size: 16px;
    font-weight: lighter;
    margin: -20px 0 0 -20px;
}

.circle-button:hover, .center-section:hover {
  background: #e8e8e8;
  border-color: #999;
}

.circle-button:active, .center-section:active {
  background: #d0d0d0;
}