* {
  margin: 0;
  padding: 0%;
  box-sizing: border-box;
  font-family: "Roboto", sans-serif;
}

html,
body {
  width: 100%;
  height: 100%;
}

/* General Styles */
body {
  background-color: #f4f7f6;
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

header,
footer {
  text-align: center;
  margin: 10px 0;
}

header h1 {
  font-size: 2.5em;
  color: #2c3e50;
}

main {
  overflow: auto;
  width: 100%;
  max-width: 800px;
  height: 80vh;
  max-height: 90vh;
  margin: 0 auto;
  padding: 10px 20px;
  background-color: #fff;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);

  &::-webkit-scrollbar {
    display: none; /* For Chrome, Safari, and Opera */
  }
}

h2 {
  font-size: 1.8em;
  color: #34495e;
  border-bottom: 2px solid #2980b9;
  padding-bottom: 10px;
  margin-bottom: 20px;
}

/* Device name prompt */
#device-name-prompt {
  display: flex;
  justify-content: center;
  gap: 10px;
  align-items: center;
}

#device-name-input {
  font-family: inherit;
  width: 130px;
  border: 0;
  border-bottom: 2px solid gray;
  outline: 0;
  font-size: 1rem;
  color: gray;
  text-align: center;
  padding: 2px 0;
  background: transparent;

  &::placeholder {
    font-size: 0.8rem;
    opacity: 0.5;
  }
}

.button-span {
  display: inline-block;
}

.set-button,
.tick {
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: sans-serif;
}

.set-button {
  width: 35px;
  height: 20px;
  background: dodgerblue;
  border-radius: 7px;
  transition: all 0.3s cubic-bezier(0.67, 0.17, 0.4, 0.83);
}

.set-button svg {
  transform: rotate(180deg);
  transition: all 0.5s;
}

.button__circle {
  width: 20px;
  height: 20px;
  background: mediumseagreen;
  border-radius: 50%;
  transform: rotate(-180deg);
}

.set-button:hover {
  cursor: pointer;
}

.tick {
  color: white;
  font-size: 0.8rem;
  transition: all 0.9s;
}

/* Upload Section Styles */
.upload-section {
  background-color: #ecf0f1;
  border-radius: 10px;
  padding: 30px;
  margin: 10px 0;
  text-align: center;
}

/* Styling for file name display */
.file-name-display {
  margin-top: 10px;
  font-size: 0.9em;
  color: #2c3e50;
  font-weight: bold;
  text-align: center;
}

.upload-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.file-label {
  background-color: #3498db;
  color: #fff;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  display: inline-block;
  font-size: 1em;
  transition: background-color 0.3s ease;
}

.file-label:hover {
  background-color: #2980b9;
}

.file-label input[type="file"] {
  display: none;
}

.file-text {
  margin-right: 10px;
}

.upload-btn {
  background-color: #2ecc71;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  font-size: 1em;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.upload-btn:hover {
  background-color: #27ae60;
}

/* Styling for "No files available" message */
.no-files-message {
  font-size: 1.2em;
  color: #7f8c8d;
  text-align: center;
  margin-bottom: 20px;
  display: none; /* Initially hidden */
}

/* Device List and File List Styles */
#device-list,
#file-list {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

#device-list li,
#file-list li {
  background-color: #ecf0f1;
  margin-bottom: 10px;
  padding: 10px 20px;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

#device-list li:hover,
#file-list li:hover {
  background-color: #bdc3c7;
}

#file-list a {
  color: #2980b9;
  text-decoration: none;
  font-weight: bold;
}

#file-list a:hover {
  text-decoration: underline;
}

/* Responsive Styles */
@media (max-width: 600px) {
  .upload-container {
    flex-direction: column;
    align-items: stretch;
  }

  .file-label,
  .upload-btn {
    width: 100%;
    text-align: center;
  }

  #device-name-prompt {
    display: block;
  }
}