@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg: #1e2444;
  --accent: #f4c430;
  --accent-hover: #e0b020;
  --text: #ffffff;
  --input-bg: #ffffff;
  --input-text: #1e2444;
  --success: #6ee7b7;
  --error: #ff6b6b;
}

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 3rem 1.5rem;
}

main {
  width: 100%;
  max-width: 700px;
  text-align: center;
}

h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 2.5rem;
}

.checker-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

.input-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

label {
  font-size: 0.95rem;
}

#text-input {
  background: var(--input-bg);
  border: none;
  border-radius: 4px;
  color: var(--input-text);
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  padding: 0.45rem 0.75rem;
  outline: none;
  width: 260px;
  height: 36px;
  transition: box-shadow 0.2s;
}

#text-input:focus {
  box-shadow: 0 0 0 2px var(--accent);
}

#check-btn {
  background: var(--accent);
  border: none;
  border-radius: 4px;
  color: var(--input-text);
  cursor: pointer;
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.45rem 1.1rem;
  height: 36px;
  transition: background-color 0.2s, transform 0.1s;
}

#check-btn:hover {
  background: var(--accent-hover);
}

#check-btn:active {
  transform: scale(0.97);
}

#result {
  border: 2px solid var(--accent);
  border-radius: 4px;
  min-height: 110px;
  width: 100%;
  max-width: 420px;
  padding: 1rem 1.25rem;
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  word-break: break-word;
  line-height: 1.4;
}

#result.is-palindrome {
  color: var(--success);
  border-color: var(--success);
}

#result.not-palindrome {
  color: var(--error);
  border-color: var(--error);
}

@media (max-width: 480px) {
  #text-input {
    width: 100%;
  }
  .input-row {
    flex-direction: column;
    align-items: stretch;
  }
  #check-btn {
    width: 100%;
  }
}