:root {
  --primary-color: #4a90e2;
  --secondary-color: #f39c12;
  --bg-color: #f4f4f4;
  --text-color: #333;
  --card-bg: #fff;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.dark-mode {
  --bg-color: #1a1a1a;
  --text-color: #f4f4f4;
  --card-bg: #2c2c2c;
  --shadow: 0 4px 6px rgba(255, 255, 255, 0.1);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  background-color: var(--card-bg);
  padding: 20px;
  border-radius: 10px;
  box-shadow: var(--shadow);
}

h1 {
  font-size: 2.5rem;
  margin: 0;
  color: var(--primary-color);
}

.btn, .btn-toggle {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
  font-size: 1rem;
}

.btn:hover, .btn-toggle:hover {
  background-color: darken(var(--primary-color), 10%);
  transform: translateY(-2px);
}

.btn-toggle {
  font-size: 1.2rem;
  padding: 10px;
}

.input-section {
  background-color: var(--card-bg);
  padding: 20px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  margin-bottom: 30px;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: var(--primary-color);
}

input[type="file"], input[type="text"] {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
}

.loading {
  display: none;
  text-align: center;
  margin: 20px 0;
}

.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-left-color: var(--primary-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.frame-controls {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.frame-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.frame-item {
  background-color: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.3s;
}

.frame-item:hover {
  transform: translateY(-5px);
}

.frame-item img {
  width: 100%;
  height: auto;
  display: block;
}

.frame-actions {
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.frame-checkbox {
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.frame-download {
  background-color: var(--secondary-color);
  color: white;
  border: none;
  padding: 5px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.3s;
}

.frame-download:hover {
  background-color: darken(var(--secondary-color), 10%);
  transform: translateY(-2px);
}

.error-message {
  color: #d9534f;
  background-color: #f2dede;
  border: 1px solid #ebccd1;
  padding: 10px;
  border-radius: 5px;
  margin-top: 10px;
  display: none;
}

.hidden {
  display: none;
}

footer {
  text-align: center;
  margin-top: 30px;
  font-size: 0.9rem;
  color: var(--text-color);
  opacity: 0.8;
}


.install-btn {
  margin-bottom: 13px;
}

.install-btn:hover{
  color: darkred;
}