@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

:root {
  --bg-dark: #1e1e2f;
  --card-dark: #2c2c3e;
  --primary: #ff7f50;
  --accent: #ffd700;
  --text-light: #f5f5f5;
  --text-muted: #aaa;
  --shadow: rgba(0, 0, 0, 0.3);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

main {
  max-width: 500px;
  width: 100%;
  background-color: var(--card-dark);
  border-radius: 16px;
  box-shadow: 0 8px 24px var(--shadow);
  padding: 2rem;
  text-align: center;
  animation: fadeIn 0.6s ease;
}

h1#title {
  color: var(--primary);
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

label {
  font-size: 1rem;
  color: var(--text-muted);
  text-align: left;
}

input[type="text"] {
  padding: 0.8rem;
  border: 2px solid var(--primary);
  border-radius: 8px;
  background: #1a1a27;
  color: var(--text-light);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

button#check-btn {
  background-color: var(--primary);
  color: var(--bg-dark);
  font-weight: bold;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

button#check-btn:hover {
  background-color: var(--accent);
  transform: scale(1.03);
}

#result {
  margin-top: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
  min-height: 1.5em;
}

#description {
  margin-top: 2rem;
  background-color: #1a1a27;
  padding: 1rem;
  border-left: 4px solid var(--primary);
  border-radius: 8px;
}

#description-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 600px) {
  main {
    padding: 1.5rem;
  }

  h1#title {
    font-size: 1.6rem;
  }

  input[type="text"] {
    font-size: 0.95rem;
  }

  button#check-btn {
    font-size: 0.95rem;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}