* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  line-height: normal;
  letter-spacing: 1px;
  user-select: none;
}
body {
  font-family: "arial", sans-serif;
  font-size: 16px;
  background-image: linear-gradient(to left, #ce57c4 0%, #df6579 100%);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  height: 100vh;
  overflow: hidden;
}
.card {
  perspective: 1000px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  width: 610px;
  height: 250px;
  cursor: pointer;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.flip {
  position: relative;
}
.front {
  perspective: 1000px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  width: 610px;
  height: 250px;
  backface-visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  background-image: linear-gradient(to right, #1a237e 0%, #283593 52%, #42a5f5 100%);
  box-shadow: 0 20px 40px -14px rgba(0, 0, 0, 0.4);
  border-radius: 5px;
  z-index: 2;
  transition: all 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0s;
}
.front.horizontal {
  transform: rotateY(0deg);
}
.front.horizontal.front-visible {
  transform: rotateY(180deg);
  z-index: 2;
}
.back {
  perspective: 1000px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  width: 610px;
  height: 250px;
  position: absolute;
  top: 0;
  left: 0;
  background-image: linear-gradient(to left, #1a237e 0%, #283593 52%, #42a5f5 100%);
  box-shadow: 0 20px 40px -14px rgba(0, 0, 0, 0.4);
  border-radius: 5px;
  z-index: 1;
  transition: all 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0s;
}
.back.horizontal {
  transform: rotateY(-180deg);
}
.back.horizontal.back-visible {
  transform: rotateY(0deg);
  z-index: 2;
}
.card-content {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  perspective: 1000px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  transform: translateY(-50%) translateZ(50px);
  color: #fff;
  text-align: center;
}
.card-content-left {
  position: absolute;
  top: 50%;
  left: -25%;
  width: 100%;
  perspective: 1000px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  transform: translateY(-50%) translateZ(50px);
  color: #fff;
  text-align: center;
  z-index: 10; /* Keep higher z-index to make buttons clickable */
}
.card-content-right {
  position: absolute;
  top: 50%;
  left: 25%;
  width: 100%; /* Restore to 100% width */
  perspective: 1000px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  transform: translateY(-50%) translateZ(50px);
  color: #fff;
  text-align: center;
  z-index: 5; /* Keep lower z-index than card-content-left */
  pointer-events: none; /* This makes clicks pass through this div */
}
/* Make the iframe and other interactive elements inside card-content-right clickable */
.card-content-right iframe,
.card-content-right a {
  pointer-events: auto;
}
.card-content h2 {
  font-size: 25px;
  margin-bottom: 5px;
}
.card-content p {
  color: rgba(255, 255, 255, 0.85);
}
.switch-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: fixed;
  bottom: 0;
  left: calc(50% - 20px);
  transform: translateY(-50%);
}
.switch-container label {
  position: relative;
  margin-top: 5px;
  color: #555;
}
input.switch {
  -webkit-appearance: none;
  -moz-appearance: none;
  -o-appearance: none;
  width: 40px;
  height: 20px;
  background-color: #fff;
  border: 1px solid #d9dadc;
  border-radius: 50px;
  -webkit-box-shadow: inset -20px 0px 0px 0px #d9dadc;
  box-shadow: inset -20px 0px 0px 0px #d9dadc;
  transition-duration: 0.2s;
}
input.switch:checked {
  box-shadow: inset 20px 0px 0px 1px #8989ba;
}

/* 링크 클릭 영역 확장을 위한 새로운 스타일 */
.contact-link {
  display: flex;
  align-items: center;
  padding: 8px 15px;
  margin: 5px 0;
  border-radius: 5px;
  transition: background-color 0.2s;
  text-decoration: none;
  color: aliceblue;
}
.contact-btn {
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 5px 10px;
  cursor: pointer;
  font-size: 12px;
  transition: background-color 0.2s;
}

.contact-btn:hover {
  background-color: rgba(255, 255, 255, 0.3);
}

.contact-btn:active {
  background-color: rgba(255, 255, 255, 0.4);
}

.contact-link svg {
  margin-right: 10px;
  flex-shrink: 0;
}

.contact-link-text {
  flex-grow: 1;
}