header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 10%;
  background-color: #ffffff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  font-family: Arial, sans-serif;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  font-size: 1.8em;
  font-weight: bold;
  color: #2a377a;
}

nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
}

nav ul li {
  margin-left: 20px;
}

nav ul li a {
  text-decoration: none;
  color: #333333;
  font-weight: 500;
  transition: color 0.3s ease;
}

nav ul li a:hover {
  color: #7a2a59;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    padding: 10px 5%;
  }
}

@media (max-width: 480px) {
  header {
    padding: 10px 5%;
  }

  .logo {
    font-size: 1.4em;
  }

  nav ul {
    display: none; /* Hide the navigation menu by default */
    flex-direction: column;
    width: 100%;
  }

  nav ul.show {
    display: flex; /* Show the navigation menu when toggled */
  }

  nav ul li {
    margin-left: 0;
    margin-bottom: 10px;
  }

  nav ul li a {
    font-size: 1em;
  }

  .menu-toggle {
    display: block; /* Show the menu toggle button */
    cursor: pointer;
    font-size: 1.4em;
    color: #333333;
  }
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  margin: 0;
  padding: 0;
}

/* About section */
.about {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5% 10%;
  flex-wrap: wrap;
  background-color: #ffffff;
}

.about-text {
  max-width: 50%;
}

.about h1 {
  font-size: 3.5em;
  margin-bottom: 0.5em;
  line-height: 1.2;
  color: #2a377a;
}

.about h1 span {
  color: #7a2a59;
  font-size: 0.75em;
}

.about p {
  font-size: 1.2em;
  margin-bottom: 2em;
  color: #555555;
}

.about .explore-button {
  padding: 1em 2em;
  background-color: #7a2a59;
  color: #ffffff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1em;
  text-decoration: none;
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.about .explore-button:hover {
  background-color: #6b214b;
  transform: translateY(-2px);
}

.about img {
  max-width: 40%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Media queries for responsive design */
@media (max-width: 768px) {
  .about {
    flex-direction: column;
    align-items: center;
  }

  .about-text {
    max-width: 100%;
    text-align: center;
  }

  .about img {
    max-width: 80%;
    margin-bottom: 1em;
  }

  .about h1 {
    font-size: 2.5em;
  }

  .about p {
    font-size: 1em;
  }
}

/* Instruction section */
.instruction {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 50px 10%;
  gap: 100px;
  background-color: #ffffff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.instruction-text {
  max-width: 50%;
}

.instruction h1 {
  font-size: 2em;
  margin-bottom: 15px;
  line-height: 1.2;
  color: #2a377a;
}

.instruction p {
  font-size: 1.2em;
  margin-bottom: 20px;
  color: #666;
}

.instruction img {
  max-width: 40%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
  .instruction {
    flex-direction: column;
    padding: 30px 10%;
  }

  .instruction-text {
    max-width: 100%;
    text-align: center;
    margin: 0 auto;
  }

  .instruction img {
    max-width: 80%;
    margin-bottom: 15px;
  }
}

/* Prediction section */
.predict {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border: 2px solid #5c6bc0;
  margin: 0 20% 50px;
  text-align: center;
  background-color: #e8eaf6;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
}

#ctimage {
  width: auto;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#uploadForm {
  padding: 20px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: #ffffff;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.predict-button,
#predictButton {
  background-color: #f57c00;
  color: #ffffff;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
  font-size: 16px;
  font-weight: 600;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.predict-button:hover,
#predictButton:hover {
  background-color: #e65100;
  transform: translateY(-2px);
}

.predict-button:focus,
#predictButton:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(245, 124, 0, 0.4);
}

.quote {
  justify-content: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  background-color: #ffffff;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.quote p {
  font-family: "Trebuchet MS", "Lucida Sans Unicode", "Lucida Grande",
    "Lucida Sans", Arial, sans-serif;
  font-size: 1.5em;
  color: #7a2a59;
  margin: 0;
}

.kidney {
  justify-content: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  background-color: #ffffff;
  padding: 20px;
}

.kidney video {
  width: auto;
  height: 200px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

@keyframes fade-in {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}

.file-input {
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.predict input[type="file"]::file-selector-button {
  border-radius: 4px;
  padding: 0 16px;
  height: 40px;
  cursor: pointer;
  border: none;
  margin-right: 16px;
  transition: background-color 200ms;
}

/* File upload button hover state */
.predict input[type="file"]::file-selector-button:hover {
  background-color: #6b214b;
}

/* File upload button active state */
.predict input[type="file"]::file-selector-button:active {
  background-color: #5c193d;
}