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

body {
  background: #0a0a0a;
  color: #ffffff;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  width: 100%;
  max-width: 480px;
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.logo {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.subtitle {
  font-size: 14px;
  color: #666;
}

.upload-box {
  width: 100%;
  border: 2px dashed #333;
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.upload-box:hover,
.upload-box.dragover {
  border-color: #555;
  background: #111;
}

.upload-icon {
  font-size: 36px;
}

.upload-text {
  font-size: 15px;
  color: #ccc;
}

.upload-hint {
  font-size: 12px;
  color: #444;
}

.progress-area {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: #1e1e1e;
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: #ffffff;
  border-radius: 999px;
  transition: width 0.4s ease;
}

.status-text {
  font-size: 13px;
  color: #888;
  text-align: center;
}

.download-btn {
  width: 100%;
  padding: 16px;
  background: #ffffff;
  color: #000000;
  border-radius: 12px;
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
}

.download-btn:hover {
  background: #e0e0e0;
}

.reset-btn {
  background: none;
  border: none;
  color: #444;
  font-size: 13px;
  cursor: pointer;
  text-decoration: underline;
}

.reset-btn:hover {
  color: #888;
}