/* ── General typography ── */
body {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #2c2c2c;
}

h1, h2, h3, h4 {
  font-weight: 700;
  color: #1a1a2e;
}

h2 {
  border-bottom: 3px solid #e63946;
  padding-bottom: 0.3rem;
  margin-top: 2.5rem;
}

h3 {
  color: #457b9d;
  margin-top: 2rem;
}

h4 {
  color: #1d3557;
}

/* ── Blockquote ── */
blockquote {
  border-left: 5px solid #e63946;
  background-color: #fff0f0;
  padding: 1rem 1.5rem;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: #333;
}

/* ── Tables ── */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

thead {
  background-color: #1d3557;
  color: white;
}

thead th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
}

tbody tr:nth-child(even) {
  background-color: #f0f4f8;
}

tbody tr:hover {
  background-color: #dce8f5;
  transition: background-color 0.2s ease;
}

tbody td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid #dee2e6;
  vertical-align: top;
}

/* ── Four areas grid ── */
.four-areas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0;
}

.area-card {
  background: linear-gradient(135deg, #1d3557, #457b9d);
  color: white;
  padding: 1.25rem 1.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.area-card h4 {
  color: #a8dadc;
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
}

.area-card p {
  margin: 0;
  font-size: 0.9rem;
  opacity: 0.9;
}

/* ── Callout tweaks ── */
.callout {
  border-radius: 8px;
  margin: 1.5rem 0;
}

.callout-tip {
  border-left-color: #2a9d8f;
}

.callout-warning {
  border-left-color: #e9c46a;
}

.callout-important {
  border-left-color: #e63946;
  background-color: #fff5f5;
}

/* ── Horizontal rule ── */
hr {
  border: none;
  border-top: 1px solid #dee2e6;
  margin: 2.5rem 0;
}

/* ── Responsive: stack grid on small screens ── */
@media (max-width: 600px) {
  .four-areas-grid {
    grid-template-columns: 1fr;
  }
}