* {
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #16273d;
}

.banner {
  background: #16273d;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 32px;
}

.banner .logo {
  height: 40px;
}

.banner h1 {
  font-size: 20px;
  margin: 0;
  font-weight: normal;
}

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

.intro {
  color: #333;
  margin-bottom: 24px;
}

.dropzone {
  border: 2px dashed #dd9821;
  border-radius: 8px;
  padding: 48px 24px;
  background: #fff;
  transition: background 0.2s, border-color 0.2s;
}

.dropzone.dragover {
  background: #fff8ea;
  border-color: #16273d;
}

.dropzone .or {
  color: #888;
  margin: 8px 0;
}

#browse-btn {
  background: #dd9821;
  color: #16273d;
  border: none;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: bold;
  border-radius: 4px;
  cursor: pointer;
}

#browse-btn:hover {
  background: #c78a1d;
}

.progress-wrap {
  margin-top: 24px;
  height: 10px;
  background: #e0e0e0;
  border-radius: 5px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: #dd9821;
  transition: width 0.2s ease;
}

.status {
  margin-top: 16px;
  font-weight: bold;
  min-height: 20px;
}

.status.success {
  color: #1a7f37;
}

.status.error {
  color: #c0392b;
}

footer {
  text-align: center;
  color: #888;
  font-size: 12px;
  padding: 24px;
}