* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  margin: 0;
  background: #121212;
  color: #f5f5f5;
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  margin-bottom: 8px;
}

.card {
  background: #1f1f1f;
  padding: 16px;
  border-radius: 16px;
  margin-bottom: 16px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

label {
  display: block;
  margin-bottom: 12px;
}

label input,
label textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #333;
  background: #0f0f0f;
  color: #f1f1f1;
  padding: 8px 12px;
  margin-top: 4px;
  font-family: inherit;
}

textarea {
  font-family: inherit;
}

button {
  background: linear-gradient(135deg, #6d7cff, #3b82f6);
  border: none;
  padding: 10px 20px;
  color: white;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease;
}

button:hover {
  transform: translateY(-1px);
}

.button-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.monospace {
  background: #0c0c0c;
  border-radius: 12px;
  padding: 12px;
  border: 1px solid #333;
  min-height: 80px;
}

.note {
  font-size: 0.9rem;
  margin-top: 8px;
  color: #b0b0b0;
}

@media (min-width: 768px) {
  label {
    display: flex;
    gap: 12px;
    align-items: center;
  }

  label input,
  label textarea {
    width: auto;
    flex: 1;
  }

  .stretch textarea {
    width: 100%;
  }
}