:root {
      --bg-color: #050505;
      --card-bg: #111111;
      --border-color: #333333;
      --accent: #72c2ff;
      --text-main: #f5f5f5;
      --text-muted: #72c2ff;
      --link: #72c2ff;
    }

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

    .page {
      width: 100%;
      max-width: 1100px;
    }

    header {
      margin-bottom: 2rem;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 1rem;
    }

    .site-title {
      font-size: clamp(2.2rem, 4.5vw, 3.2rem);
      letter-spacing: 0.08em;
      text-transform: uppercase;
    }

    .site-subtitle {
      margin-top: 0.5rem;
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    .layout {
      display: grid;
      grid-template-columns: minmax(0, 3fr) minmax(240px, 1.2fr);
      gap: 2rem;
      align-items: flex-start;
    }

    @media (max-width: 800px) {
      .layout {
        grid-template-columns: 1fr;
      }
    }

    .main-content {
      background: #0a0a0a;
      border: 1px solid var(--border-color);
      border-radius: 1rem;
      padding: 1.75rem 1.5rem;
    }

    .main-content h1 {
      font-size: 2rem;
      margin-bottom: 0.75rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    .main-content h2 {
      font-size: 1.3rem;
      margin-top: 1.5rem;
      margin-bottom: 0.5rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--accent);
    }

    .main-content p {
      font-size: 1.125rem;  /* 18px */
      line-height: 1.7;
      color: var(--text-main);
    }

    .main-content p.muted {
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    .tagline-block {
  margin: 1rem 0 1.5rem;
  color: var(--text-muted);
  font-size: 1.05rem;
  border-left: none;
  padding-left: 0;
}

.tagline-block strong {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: clamp(1.2rem, 3.0vw, 2.0rem);
  font-weight: 700;
  display: block;
  margin-bottom: 1rem;
}

    .highlight {
      color: var(--accent);
      font-weight: 500;
    }

/* Let main fill the remaining space */
.layout .page {
  flex: 1;
  margin: 0;
  padding: 0; /* we’re using layout padding instead */
}

/* SIDEBAR ON THE RIGHT */
.sidebar {
  flex-shrink: 0;
  width: 230px;
  border-radius: 1.25rem;
  border: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, #0c131d, #05070a);
  position: sticky;
  top: 1.5rem;
  align-self: flex-start;
}

.sidebar-inner {
  padding: 1.4rem 1.25rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 1.85rem;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sidebar-heading {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-links a {
  font-size: 0.9rem;
  color: var(--text-main);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity 0.15s ease, transform 0.1s ease, color 0.15s ease;
}

.sidebar-links a:hover {
  opacity: 1;
  color: var(--accent);
  transform: translateX(2px);
}

/* MOBILE: stack, sidebar below main */
@media (max-width: 768px) {
  .layout {
    flex-direction: column;
    padding: 1.75rem 1.25rem 2.5rem;
  }

  .sidebar {
    position: static;
    width: 100%;
  }
}
    footer {
      margin-top: 2.5rem;
      font-size: 0.8rem;
      color: var(--text-muted);
      text-align: center;
    }
/* BOOK TITLES — force these colors even though they are links */
a.book-title:link,
a.book-title:visited {
  color: #cddfa0;     /* your book title color */
  font-weight: 500;
  text-decoration: none; /* optional */
}

a.book-title:hover,
a.book-title:active {
  color: #72c2ff;     /* hover/active color */
  text-decoration: underline; /* optional */
}

@media (max-width: 900px) {
  .left-banner {
    display: none;
  }

  body {
    padding: 2rem 1rem; /* no extra left padding on small screens */
  }
}