* {
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  /* min-height: 700px; */
}
.quiz-app {
  margin: 10px auto 60px;
  width: 800px;
  background-color: #f8f8f8;
  padding: 15px;
}

/* quiz info */
.quiz-app .quiz-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: white;
  padding: 20px;
}

.quiz-app .quiz-info .category {
  flex: 1;
}
.quiz-app .quiz-info .count {
  flex: 1;
  text-align: right;
}

/* quiz area */
.quiz-app .quiz-area {
  background-color: white;
  padding: 20px;
  margin-top: 15px;
}
.quiz-app .quiz-area h2 {
  margin: 0;
}
.quiz-app .answers-area {
  background-color: white;
  padding: 0 20px 20px;
}

/* answer */
.quiz-app .answers-area .answer {
  background-color: #f9f9f9;
  padding: 15px;
}
.quiz-app .answers-area .answer:not(:last-child) {
  border-bottom: 1px solid #dfdfdf;
}
.quiz-app .answers-area .answer input[type="radio"]:checked + label {
  color: #0075ff;
}
.quiz-app .answers-area .answer label {
  font-weight: bold;
  color: #777;
  font-size: 14px;
  margin-left: 5px;
  position: relative;
  top: -2px;
  cursor: pointer;
}

/* confirm box */
.confirm-box {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}
.confirm-content {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  text-align: center;
  width: 400px;
}
.confirm-content button {
  margin: 10px;
  padding: 8px 16px;
  cursor: pointer;
  border-radius: 5px;
  border: 1px solid #0075ff;
  background-color: white;
  font-size: 20px;
  font-weight: bold;
}

/* submit */
.quiz-app .submit-btn {
  background-color: #0075ff;
  color: white;
  border: none;
  border-radius: 6px;
  display: block;
  width: 95%;
  padding: 10px 15px;
  font-weight: bold;
  font-size: 18px;
  cursor: pointer;
  margin: 20px auto;
}
.quiz-app .submit-btn:focus {
  outline: none;
}
.buttons {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* next & prev */
#next-btn,
#prev-btn {
  background-color: #0075ff;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 10px 60px;
  font-weight: bold;
  font-size: 18px;
  cursor: pointer;
  margin: 15px 20px 0;
}

/* bullets */
.quiz-app .bullets {
  border-top: 1px solid #dfdfdf;
  background-color: white;
  display: flex !important;
  padding: 20px;
  margin-bottom: 5px;
}

.quiz-app .bullets .spans-container {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 5px 0;
}
.quiz-app .bullets .spans-container span {
  width: 35px;
  height: 35px;
  background-color: #ddd;
  margin-right: 5px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: #0075ff;
}
.quiz-app .bullets .spans-container span.on {
  background-color: #0075ff;
  color: white;
}
.quiz-app .results {
  padding: 10px 0 0;
  text-align: center;
  font-size: 18px;
  font-weight: bold;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-direction: column;
  margin: 15px 0 10px;
}

/* countdown */
.countdown {
  font-size: 20px;
  font-weight: bold;
  color: #000;
  opacity: 1;
  display: block;
}

/* result */
.quiz-app .results span {
  font-weight: bold;
}
.quiz-app .results span.bad {
  color: #dc0a0a;
}
.quiz-app .results span.good {
  color: #009688;
}
.quiz-app .results span.perfect {
  color: #0075ff;
}

/* lang */
.lang-btn {
  display: block;
  align-items: center;
  justify-content: center;
}

/* msgbox */
.msg-box {
  display: flex;
  position: fixed;
  top: 20%;
  left: 50%;
  transform: translateX(-50%) scale(0.5);
  background-color: white;
  padding: 30px;
  border: 2px solid #0075ff;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  z-index: 9999;
  transition: all 0.3s ease-in;
  opacity: 0;
}
.msg-box.show {
  display: block;
  opacity: 1;
  transform: translateX(-50%) scale(1);
}
#closeMsg {
  border: 2px solid #0075ff;
  border-radius: 5px;
  padding: 5px 15px;
  margin: 15px 0 0 0;
  /* text-align: center; */
}

/* dropdown */
.quiz-app .dropdown .dropdown-toggle {
  width: 620px;
  font-size: 25px;
  font-weight: bold;
}
.quiz-app .dropdown .dropdown-menu {
  width: 380px;
  padding: 5px;
  margin: 5px 0 !important;
}
.quiz-app .dropdown li {
  margin: 15px 0;
  font-weight: bold !important;
  font-size: 30px;
}

.quiz-area,
.answers-area,
.bullets,
#next-btn,
#prev-btn,
.submit-btn,
.countdown,
.count {
  opacity: 0;
  transform: translateY(12px); /* subtle start */
  transition: transform 0.28s ease, opacity 0.28s ease;
}
.show {
  opacity: 1;
  max-width: 1000px;
}
.visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* lock */
.locked {
  opacity: 0.6s;
  pointer-events: none;
}

/* chart */
#resultChart {
  display: none;
  width: 350px;
  height: 350px;
  margin: 20px auto;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 20px;
  background: #fafafa;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
/* show answer */
#showAnswerBtn {
  padding: 10px 15px;
  background: white;
  border-radius: 8px;
  border: 2px solid #0075ff;
  margin: 0 0 25px;
  cursor: pointer;
}

/* slide */
.question-box,
.answers-box {
  position: relative;
  width: 100%;
  animation-duration: 0.6s;
  animation-fill-mode: both;
  animation-timing-function: ease-in-out;
}
.question-box::before,
.answers-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  z-index: -1;
}
.slide-out-left {
  animation-name: slideOutLeft;
}
.slide-out-right {
  animation-name: slideOutRight;
}
.slide-in-right {
  animation-name: slideInRight;
}
.slide-in-left {
  animation-name: slideInLeft;
}

@keyframes slideOutLeft {
  to {
    transform: translateX(-100%);
    opacity: 0;
  }
}
@keyframes slideOutRight {
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
.question-box.animating,
.answers-box.animating {
  pointer-events: none;
}

.show-answers h3 {
  font-size: 20px;
}

.show-answers p {
  font-weight: bold;
  font-size: 19px;
}

/*  footer */
footer {
  background: #fff;
  padding: 8px 0;
  margin-top: 15px auto;
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  border-top: 2px solid #eee;
}
.footer {
  text-align: center;
  margin: 0 auto;
  padding: 5px 20px;
  max-width: 1200px;
}
.footer p {
  margin: 0;
  font-size: 16px;
  color: #222;
}
.footer span {
  font-weight: bold;
  color: #0075ff;
}
.footer i {
  color: #0075ff;
}

@media (max-width: 992px) {
  .quiz-app {
    width: 500px;
    margin: 10px auto 60px;
  }
  .quiz-app .dropdown .dropdown-toggle {
    width: 330px;
    font-size: 22px;
  }
  .quiz-app .dropdown .dropdown-menu {
    width: 330px;
    padding: 5px;
    margin: 5px 0 !important;
  }
  .quiz-app .dropdown li {
    margin: 12px 0;
    font-size: 30px;
  }
  #next-btn,
  #prev-btn {
    padding: 10px 50px;
    font-size: 18px;
    margin: 15px 20px 0;
  }
  .footer {
    padding: 8px;
  }
  .footer p {
    font-size: 16px;
  }
  #resultChart {
    width: 350px !important;
    height: 350px !important;
  }

  .show-answers h3 {
    font-size: 19px;
  }
  .show-answers p {
    font-weight: bold;
    font-size: 18px;
  }
}

@media (max-width: 768px) {
  .quiz-app {
    width: 450px;
  }
  .quiz-app .dropdown .dropdown-toggle {
    width: 280px;
    font-size: 20px;
  }
  .quiz-app .dropdown .dropdown-menu {
    width: 280px;
    padding: 3px;
    margin: 3px 0 !important;
  }
  .quiz-app .dropdown li {
    margin: 5px 0;
    font-size: 25px;
  }
  #next-btn,
  #prev-btn {
    padding: 10px 40px;
    font-size: 17px;
    margin: 15px 5px 0;
  }
  #resultChart {
    width: 300px !important;
    height: 300px !important;
    margin: 20px auto;
    padding: 10px;
  }
  /* show answer */
  #showAnswerBtn {
    padding: 5px 10px;
    margin: 0 0 15px;
  }

  .show-answers h3 {
    font-size: 18px;
  }
  .show-answers p {
    font-weight: bold;
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .quiz-app {
    width: 340px;
  }
  .quiz-app .quiz-info .category {
    font-size: 15px;
    margin-bottom: 0 !important;
  }
  .quiz-app .quiz-info .count {
    font-size: 15px;
  }
  .quiz-app .dropdown .dropdown-toggle {
    width: 180px;
    font-size: 18px;
  }
  .quiz-app .dropdown .dropdown-menu {
    width: 180px;
    padding: 0;
    margin: 0 !important;
  }
  .quiz-app .dropdown li {
    margin: 0;
    font-size: 18px;
  }
  #next-btn,
  #prev-btn {
    padding: 10px 20px;
    font-size: 15px;
    margin: 15px 5px 0;
  }
  .footer p {
    font-size: 12px;
  }
  #resultChart {
    width: 250px !important;
    height: 250px !important;
    margin: 20px auto;
    padding: 10px;
  }
  /* show answer */
  #showAnswerBtn {
    padding: 5px 8px;
    margin: 0 0 10px;
  }

  .show-answers h3 {
    font-size: 16px;
  }

  .show-answers p {
    font-weight: bold;
    font-size: 15px;
  }
}