:root {
  color-scheme: light dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background: #f5f6f8;
  color: #1f2328;
}

@media (prefers-color-scheme: dark) {
  body {
    background: #111418;
    color: #e6e8eb;
  }
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

h1 {
  font-size: 22px;
  margin: 0 0 20px;
}

.source-box {
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.6);
}

@media (prefers-color-scheme: dark) {
  .source-box {
    border-color: #30363d;
    background: #161b22;
  }
}

.source-box h2 {
  margin: 0 0 10px;
  font-size: 16px;
}

form {
  display: flex;
  gap: 8px;
}

input {
  flex: 1;
  min-width: 0;
  padding: 12px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  font-size: 16px;
}

button {
  padding: 12px 18px;
  border: none;
  border-radius: 8px;
  background: #0969da;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.status {
  min-height: 20px;
  margin: 14px 0;
  color: #8250df;
}

#result {
  margin-top: 12px;
  padding: 16px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.6);
}

@media (prefers-color-scheme: dark) {
  input,
  #result {
    border-color: #30363d;
    background: #161b22;
  }
}

#title {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
}

.meta {
  margin: 0 0 16px;
  font-size: 13px;
  opacity: 0.75;
}

.badge {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 10px;
  border-radius: 999px;
  background: #0969da;
  color: #fff;
  font-size: 13px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
}

select {
  width: 100%;
  padding: 10px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  font-size: 15px;
  margin-bottom: 16px;
}

#download {
  width: 100%;
  padding: 14px;
  font-size: 17px;
}

.tip {
  margin: 12px 0 0;
  font-size: 12px;
  opacity: 0.65;
  text-align: center;
}

.progress-wrap {
  margin-top: 16px;
}

.progress {
  height: 8px;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(127, 127, 127, 0.25);
}

#progressBar {
  width: 0;
  height: 100%;
  background: #0969da;
  transition: width 0.2s ease;
}

#progressText {
  margin: 8px 0 0;
  text-align: center;
}