* {
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
  background: #042453;
  display: flex;
  justify-content: center;
  align-items: center;
}

.upload-container {
  background: #ffffff;
  width: 320px;
  padding: 25px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

h2 {
  margin-bottom: 15px;
}

input[type="file"] {
  margin-bottom: 15px;
}

.preview-box {
  width: 100%;
  height: 180px;
  border: 2px dashed #cbd5f5;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.preview-box img {
  max-width: 100%;
  max-height: 100%;
  display: none;
}

#placeholder {
  font-size: 14px;
  color: #6b7280;
}