/* Dark minimal theme for Image Optimizer */
body {
  background-color: #0d1117;
  color: #e6edf3;
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background-color: #161b22;
  padding: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #21262d;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

nav a {
  margin-right: 1rem;
  color: #58a6ff;
  text-decoration: none;
  font-size: 1rem;
}
nav a:last-child {
  margin-right: 0;
}
nav a:hover {
  text-decoration: underline;
}

main {
  flex: 1;
  padding: 2rem;
}

form {
  display: flex;
  flex-direction: column;
  max-width: 400px;
}

label {
  margin-bottom: 0.5rem;
}

input[type="file"] {
  margin-top: 0.5rem;
  background-color: #161b22;
  border: 1px solid #30363d;
  color: #e6edf3;
  padding: 0.5rem;
  border-radius: 4px;
}

button {
  margin-top: 1rem;
  padding: 0.7rem;
  background-color: #238636;
  color: #ffffff;
  border: none;
  cursor: pointer;
  border-radius: 4px;
  font-size: 1rem;
}
button:hover {
  background-color: #2ea043;
}

#result {
  margin-top: 1rem;
}

#download-link {
  color: #58a6ff;
  text-decoration: underline;
  word-break: break-all;
}

footer {
  background-color: #161b22;
  padding: 1rem;
  text-align: center;
  color: #8b949e;
  border-top: 1px solid #21262d;
}