/* Base styles */
body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  margin: 0;
  line-height: 1.6;
}

/* Accent color */
:root {
  --accent-red: #b30000;
}

/* Header banner */
header {
  background: var(--accent-red);
  color: #fff;
  padding: 20px;
}
header h1 { margin: 0; font-size: 1.6rem; color: #fff; }
header p { margin: 4px 0 0; font-size: 1rem; color: #fff; }

/* Layout container */
.container {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  align-self: start;
  background: #e0e0e0;
  border-right: 1px solid #ccc;
  padding: 16px;
  height: fit-content;
}
nav h2 { font-size: 1rem; margin-top: 0; color: var(--accent-red); }
nav ul { list-style: none; padding: 0; margin: 0; }
nav li { margin: 8px 0; }
nav a { text-decoration: none; color: var(--accent-red); font-weight: 600; }

/* Main content */
main { padding: 20px 28px; }
section { margin-bottom: 40px; }

/* Headings in content */
h1, h2, h3 { color: var(--accent-red); }
header h1, header h2, header h3 { color: #fff; }

/* Blocks */
.block {
  border: 1px solid #ddd;
  padding: 16px;
  border-radius: 6px;
  background: #fff;
}

/* Inputs */
.inputs { margin-top: 12px; }
.inputs label {
  font-weight: 600;
  display: block;
  margin: 10px 0 4px;
}
.inputs input[type="text"],
.inputs textarea {
  width: 100%;
  max-width: 560px;
  padding: 8px;
}
.char-hint { font-size: 0.9rem; color: #555; }

/* Actions */
.actions { margin-top: 12px; }
.actions button {
  background: var(--accent-red);
  color: #fff;
  border: none;
  padding: 10px 14px;
  cursor: pointer;
  border-radius: 4px;
}
.actions button:hover { opacity: 0.9; }

/* Results */
.results {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fafafa;
  display: none;
}
.results h3 { margin-top: 0; color: #333; }

/* Footer */
footer {
  padding: 18px 22px;
  border-top: 1px solid #ddd;
  font-size: 0.9rem;
  color: #333;
  grid-column: 1 / -1;
}

/* --- Mobile layout fix --- */
@media (max-width: 768px) {
  .container {
    grid-template-columns: 1fr; /* stack nav above main */
  }

  nav {
    position: relative; /* disable sticky on small screens */
    border-right: none;
    border-bottom: 1px solid #ccc;
    width: 100%; /* stretch full width */
    margin-bottom: 20px;
  }
}