:root {
  --ink: #0f0f0f;
  --paper: #f3f1ed;
  --accent: #cb4b16;
  --shadow: rgba(0, 0, 0, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Mono", "Courier New", monospace;
  color: var(--ink);
  background: radial-gradient(circle at top, #fef6e4, #f3f1ed 45%, #e9e4dc 100%);
  min-height: 100vh;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

.panel {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 20px 60px var(--shadow);
}

h1, h2 {
  margin: 0 0 16px;
  font-family: "IBM Plex Serif", "Times New Roman", serif;
}

p {
  line-height: 1.6;
}

.code-box {
  font-family: "Space Mono", monospace;
  font-size: 20px;
  letter-spacing: 1px;
  background: #111;
  color: #39ff14;
  padding: 16px;
  border-radius: 12px;
  display: inline-block;
}

.button {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

form {
  margin-top: 20px;
}

input[type="text"] {
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid #ccc;
  width: min(420px, 100%);
  font-size: 16px;
}

.error {
  color: #b22222;
  margin-top: 12px;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid #ddd;
}