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

body {
  background-color: #eef2f7;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding-top: 60px;
}

.container {
  background: #ffffff;
  width: 420px;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

h2 {
  text-align: center;
  margin-bottom: 20px;
  color: #1f2937;
}

form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

input[type="file"],
input[type="text"] {
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
}

input[type="file"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: #2563eb;
}

button {
  padding: 10px;
  background-color: #2563eb;
  color: #ffffff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
}

button:active {
  background-color: #6f737d;
}

pre {
  margin-top: 18px;
  padding: 14px;
  background-color: #0f172a;
  color: #e5e7eb;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.4;
  overflow-x: auto;
  max-height: 280px;
}