/* Info box */
.info-box {
  background: var(--gray-light);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
  margin: 24px 0;
}
.info-box h4 {
  color: var(--berkeley-blue);
  margin-bottom: 8px;
  font-size: 1rem;
  font-weight: 600;
}
.info-box p {
  color: var(--berkeley-blue);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

/* Usage section */
.usage-section {
  background: var(--gray-light);
  border-radius: 8px;
  padding: 24px;
  margin: 24px 0; /* vertical margins only */
  border: 1px solid var(--border-color);
  width: 100%; /* remain responsive on small screens */
}
.usage-section h4 { color: var(--berkeley-blue); margin-bottom: 12px; }
.usage-section ol { margin-left: 24px; }
.usage-section li { margin: 8px 0; color: var(--berkeley-blue); }

/* Shortcuts table */
.shortcuts-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  border-top: 1px solid var(--border-color);
  font-size: 0.95rem; /* slightly smaller to match surrounding text */
  table-layout: fixed; /* help long text wrap */
}
.shortcuts-table th,
.shortcuts-table td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.shortcuts-table th {
  background: var(--gray-light);
  font-weight: 600;
  color: var(--berkeley-blue);
  border-top: 1px solid var(--border-color);
}
.shortcuts-table td { color: var(--berkeley-blue); }
.shortcuts-table code {
  background: var(--gray-light);
  color: var(--berkeley-blue);
  padding: 4px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  white-space: normal;
}

/* Contact section */
.contact-section {
  background: var(--gray-light);
  padding: 40px 0;
  margin-top: 32px;
}
.contact-section h1 {
  color: var(--berkeley-blue);
  margin-top: 0;
  border: 0;
  padding: 0;
  text-align: center;
}
.contact-section a {
  color: var(--berkeley-blue-80);
  text-decoration: none;
  font-weight: 500;
}
.contact-section a:hover { text-decoration: underline; color: var(--berkeley-blue); }
.contact-section p { color: var(--berkeley-blue); }

.creator-section {
  margin-bottom: 32px;
  text-align: left;
}

.creator-section h4 {
  margin-bottom: 4px;
  color: var(--berkeley-blue);
  text-align: left;
  font-style: italic;
}

.creator-message {
  color: var(--berkeley-blue);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 4px;
  margin-bottom: 12px;
  font-style: italic;
}

.creator-signature {
  font-style: italic;
  color: var(--berkeley-blue-80);
  font-size: 0.95rem;
  margin: 0;
  text-align: right;
}

.creator-signature cite {
  font-style: inherit;
}

.contact-section-main {
  text-align: center;
  margin-bottom: 24px;
}

.contact-section-main h4 {
  margin-bottom: 0px;
  color: var(--berkeley-blue);
  font-style: italic;
}

.contact-section-main p {
  text-align: center;
}

.email-link {
  font-size: 0.9rem;

  margin: 8px 0;
  color: var(--berkeley-blue-80);
  text-decoration: none;
  font-style: italic;
}

.email-link:hover,
.email-link:focus {
  color: var(--berkeley-blue);
  text-decoration: underline;
}

/* Footer */
.last-updated {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.last-updated a {
  color: inherit;
}

/* Equation layout for Combined Actions */
.equation-layout {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin: 24px 0;
}
.equation-operator {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 8px;
  flex-shrink: 0;
}

.equation-operator .operator-symbol {
  font-size: 2rem;
  font-weight: 700;
  color: var(--berkeley-blue);
  background: var(--gray-light);
  border: 2px solid var(--berkeley-blue-20);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
}

.equation-operator.equals .operator-symbol {
  background: linear-gradient(135deg, var(--gray-light) 0%, var(--berkeley-blue-10) 100%);
}

.equation-operator.plus .operator-symbol {
  background: linear-gradient(135deg, var(--gray-light) 0%, var(--berkeley-blue-10) 100%);
}

.equation-operator:hover .operator-symbol {
  transform: scale(1.05);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Responsive tweaks for widgets */
@media (max-width: 768px) {
  .shortcuts-table { font-size: 0.9rem; width: 100%; }
  .shortcuts-table th,
  .shortcuts-table td { padding: 12px; white-space: normal; word-break: break-word; }
  
  /* Tighter equation layout for mobile */
  .equation-layout {
    gap: 8px;
    margin: 16px 0;
    justify-content: center;
  }
  
  /* Smaller equation operators on mobile */
  .equation-operator .operator-symbol {
    font-size: 1.2rem;
    width: 32px;
    height: 32px;
  }
  
  .equation-operator {
    padding: 4px;
  }
}

/* Extra small screens - stack vertically */
@media (max-width: 480px) {
  .equation-layout {
    flex-direction: column;
    gap: 8px;
    align-items: center;
  }
}