/* Litepaper page — extends style.css's dark theme with long-form reading typography */

.lp-header {
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
  backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur);
}

.lp-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px 24px;
}

.lp-back {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--fg);
  text-decoration: none;
}

.lp-back:hover {
  color: var(--accent);
}

.lp-source {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  text-decoration: none;
  transition: border-color 0.15s ease;
}

.lp-source:hover {
  border-color: var(--accent);
}

.lp-article {
  max-width: var(--prose, 760px);
  padding-top: 56px;
  padding-bottom: 80px;
}

.lp-title-block h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.lp-subtitle {
  font-size: 1.2rem;
  color: var(--fg-dim);
  margin: 0 0 24px;
  max-width: none;
  line-height: 1.5;
}

.lp-meta {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--fg-dim);
  line-height: 1.8;
  max-width: none;
}

.lp-meta a {
  color: var(--accent);
}

.lp-article hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.lp-article h2 {
  font-size: 1.55rem;
  margin: 52px 0 16px;
  letter-spacing: -0.01em;
}

.lp-article h2:first-of-type {
  margin-top: 0;
}

.lp-article h3 {
  font-size: 1.2rem;
  margin: 36px 0 14px;
  color: var(--fg);
}

.lp-article p {
  color: var(--fg-dim);
  max-width: none;
  margin: 0 0 18px;
  font-size: 1.02rem;
}

.lp-article strong {
  color: var(--fg);
}

.lp-article em {
  color: var(--fg);
  font-style: italic;
}

.lp-article code {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.88em;
  color: var(--accent);
}

.lp-article ul,
.lp-article ol {
  color: var(--fg-dim);
  margin: 0 0 20px;
  padding-left: 24px;
}

.lp-article li {
  margin-bottom: 10px;
  line-height: 1.65;
}

.lp-article li strong {
  color: var(--fg);
}

.lp-table-wrap {
  overflow-x: auto;
  margin: 20px 0 28px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur);
}

.lp-article table {
  border-collapse: collapse;
  width: 100%;
  min-width: 560px;
  font-size: 0.92rem;
}

.lp-article thead {
  background: rgba(0, 212, 255, 0.04);
}

.lp-article th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--fg-dim);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.lp-article td {
  padding: 14px 16px;
  color: var(--fg-dim);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.55;
}

.lp-article tbody tr:last-child td {
  border-bottom: none;
}

.lp-article td:first-child {
  color: var(--fg);
  font-weight: 600;
  white-space: nowrap;
}

.lp-diagram {
  background: var(--card-bg);
  backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  margin: 24px 0 32px;
  overflow-x: auto;
  box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.05), 0 0 24px rgba(139, 92, 246, 0.06);
}

.lp-diagram .mermaid {
  display: flex;
  justify-content: center;
}

.lp-tagline {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin: 28px 0;
}

.lp-disclaimer {
  font-size: 0.85rem;
  color: var(--fg-dim);
  max-width: none;
}

@media (max-width: 600px) {
  .lp-article {
    padding-top: 40px;
  }
  .lp-header-inner {
    padding: 14px 20px;
  }
  .lp-diagram {
    padding: 16px 12px;
  }
}