*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Helvetica, Arial, sans-serif;
  background: #0d1117;
  color: #e6edf3;
  min-height: 100vh;
  line-height: 1.5;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 32px;
}

h1 {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.accent { color: #e6edf3; }
.muted { color: #8b949e; }

.subtitle {
  margin-top: 8px;
  color: #8b949e;
  font-size: 16px;
}

/* Input */
.input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
}

#repoUrl {
  flex: 1;
  padding: 10px 14px;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 6px;
  color: #e6edf3;
  font-size: 15px;
  font-family: "SFMono-Regular", Consolas, monospace;
  outline: none;
  transition: border-color 0.15s;
}

#repoUrl:focus {
  border-color: #58a6ff;
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15);
}

#repoUrl::placeholder {
  color: #484f58;
}

#generateBtn {
  padding: 10px 24px;
  background: #238636;
  border: 1px solid rgba(240, 246, 252, 0.1);
  border-radius: 6px;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}

#generateBtn:hover { background: #2ea043; }
#generateBtn:active { background: #238636; }
#generateBtn:disabled {
  background: #21262d;
  color: #484f58;
  cursor: not-allowed;
}

/* Status */
#status {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 24px;
  font-size: 14px;
}

#status.hidden { display: none; }
#status.error {
  background: rgba(248, 81, 73, 0.1);
  border: 1px solid rgba(248, 81, 73, 0.3);
  color: #f85149;
}
#status.success {
  background: rgba(63, 185, 80, 0.1);
  border: 1px solid rgba(63, 185, 80, 0.3);
  color: #3fb950;
}
#status.loading {
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.3);
  color: #58a6ff;
}

/* Result */
#result.hidden { display: none; }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: #161b22;
  border: 1px solid #30363d;
  border-radius: 6px 6px 0 0;
}

.toolbar h2 {
  font-size: 14px;
  font-weight: 600;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

#lineCount {
  font-size: 12px;
}

.toolbar-actions button {
  padding: 5px 14px;
  background: #21262d;
  border: 1px solid #30363d;
  border-radius: 6px;
  color: #e6edf3;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.15s;
}

.toolbar-actions button:hover { background: #30363d; }
.toolbar-actions button:active { background: #21262d; }

#preview {
  background: #0d1117;
  border: 1px solid #30363d;
  border-top: none;
  border-radius: 0 0 6px 6px;
  padding: 24px;
  overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 600px;
  overflow-y: auto;
}

/* Footer */
footer {
  text-align: center;
  margin-top: 48px;
  font-size: 13px;
}

footer a {
  color: #58a6ff;
  text-decoration: none;
}

footer a:hover { text-decoration: underline; }

/* Badge */
.badge {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.badge.backend {
  background: rgba(63, 185, 80, 0.15);
  color: #3fb950;
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.badge.pages {
  background: rgba(88, 166, 255, 0.15);
  color: #58a6ff;
  border: 1px solid rgba(88, 166, 255, 0.3);
}

.badge.loading {
  background: rgba(139, 148, 158, 0.15);
  color: #8b949e;
  border: 1px solid rgba(139, 148, 158, 0.3);
}

/* Scrollbar */
#preview::-webkit-scrollbar { width: 8px; }
#preview::-webkit-scrollbar-track { background: #161b22; }
#preview::-webkit-scrollbar-thumb { background: #30363d; border-radius: 4px; }