/* manual.css — layout + theme for the markdown-driven /docs reference. */

.dm-shell {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr) 220px;
  gap: 0;
  max-width: 1320px;
  margin: 0 auto;
  align-items: start;
}

/* ── left sidebar ── */
.dm-sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  padding: 1.6rem 1rem 3rem 1.25rem;
  border-right: 1px solid var(--line);
}
.dm-sidebar-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1rem;
  font: 800 0.95rem/1 'League Spartan', ui-sans-serif, system-ui, sans-serif;
  letter-spacing: -0.01em;
  color: var(--text);
  text-transform: uppercase;
}
.dm-sidebar-head .dm-kbd {
  margin-left: auto;
  font: 600 0.68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  padding: 0.2rem 0.35rem;
}
#dm-sidebar-nav { display: flex; flex-direction: column; gap: 1.15rem; }
.dm-nav-group { display: flex; flex-direction: column; gap: 0.08rem; }
.dm-nav-group-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.35rem;
  padding: 0 0.65rem;
  font: 700 0.68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
}
.dm-nav-group-head .dm-kbd {
  margin-left: auto;
  font: 600 0.62rem/1 ui-monospace, monospace;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  padding: 0.15rem 0.3rem;
  text-transform: none;
  letter-spacing: 0;
}
.dm-nav-link {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 0.5rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.3;
  border-left: 2px solid transparent;
  transition: background 0.15s ease, color 0.15s ease;
}
.dm-nav-link:hover { background: color-mix(in srgb, var(--card) 70%, transparent); color: var(--text); }
.dm-nav-link.is-active {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border-left-color: var(--accent);
  font-weight: 600;
}
.dm-nav-link--child {
  padding-left: 1.15rem;
  font-size: 0.86rem;
}

/* ── main column ── */
.dm-main { min-width: 0; padding: 0 2.4rem 5rem; }
.dm-topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  padding: 1rem 0 0.9rem;
  margin-bottom: 1.4rem;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.dm-crumb {
  font-size: 0.82rem;
  color: var(--muted);
  margin-right: auto;
}
.dm-crumb b { color: var(--text); font-weight: 600; }
.dm-toolbar { display: flex; gap: 0.45rem; flex-wrap: wrap; }
.dm-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.12s ease;
}
.dm-btn:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); transform: translateY(-1px); }
.dm-btn .ico { font-size: 0.85em; opacity: 0.8; }
.dm-btn--primary { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }

.dm-sidebar-toggle {
  display: none;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: var(--card);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

/* ── markdown content ── */
.dm-content { min-width: 0; }
.dm-content.is-loading { opacity: 0.4; }
.dm-content h1 {
  font-size: clamp(1.85rem, 3.4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.12;
  margin: 0 0 0.9rem;
  color: var(--text);
}
.dm-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 2.4rem 0 0.9rem;
  padding-top: 0.6rem;
  color: var(--text);
  scroll-margin-top: 5rem;
}
.dm-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.8rem 0 0.7rem;
  color: var(--text);
  scroll-margin-top: 5rem;
}
.dm-content h4 { font-size: 0.98rem; font-weight: 700; margin: 1.4rem 0 0.5rem; color: var(--text); }
.dm-content p { margin: 0 0 1rem; color: var(--text); line-height: 1.7; font-size: 0.98rem; }
.dm-content a { color: var(--accent); text-decoration: none; }
.dm-content a:hover { text-decoration: underline; }
.dm-content ul, .dm-content ol { margin: 0 0 1rem; padding-left: 1.4rem; color: var(--text); line-height: 1.7; }
.dm-content li { margin: 0.25rem 0; }
.dm-content li::marker { color: var(--muted); }
.dm-content strong { color: var(--text); font-weight: 700; }
.dm-content hr { border: 0; border-top: 1px solid var(--line); margin: 2.2rem 0; }

.dm-content :not(pre) > code {
  font: 0.84em/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: color-mix(in srgb, var(--accent) 75%, var(--text));
  padding: 0.12em 0.38em;
  border-radius: 0.35rem;
  word-break: break-word;
}

.dm-anchor {
  margin-left: 0.45rem;
  color: var(--muted);
  opacity: 0;
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.15s ease;
}
.dm-content h2:hover .dm-anchor, .dm-content h3:hover .dm-anchor { opacity: 0.7; }

/* code blocks */
.dm-code {
  position: relative;
  margin: 0 0 1.3rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: color-mix(in srgb, var(--card) 60%, #000 10%);
  overflow: hidden;
}
.dm-code pre { margin: 0; padding: 1rem 1.1rem; overflow-x: auto; }
.dm-code code {
  font: 0.82rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--text);
  white-space: pre;
}
.dm-lang {
  position: absolute;
  top: 0.55rem;
  right: 4.2rem;
  font: 600 0.66rem/1 ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.dm-copy {
  position: absolute;
  top: 0.5rem;
  right: 0.55rem;
  padding: 0.22rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: color-mix(in srgb, var(--card) 90%, transparent);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
}
.dm-copy:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); }

/* tables */
.dm-tablewrap { overflow-x: auto; margin: 0 0 1.3rem; border: 1px solid var(--line); border-radius: 0.7rem; }
.dm-content table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.dm-content th, .dm-content td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.dm-content th { background: color-mix(in srgb, var(--card) 70%, transparent); color: var(--text); font-weight: 700; }
.dm-content td { color: var(--muted); }
.dm-content tr:last-child td { border-bottom: 0; }

/* blockquotes / callouts */
.dm-content blockquote {
  margin: 0 0 1.3rem;
  padding: 0.8rem 1.1rem;
  border-left: 3px solid color-mix(in srgb, var(--accent) 60%, var(--line));
  border-radius: 0 0.5rem 0.5rem 0;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}
.dm-content blockquote p { margin: 0; color: var(--muted); }
.dm-content blockquote p + p { margin-top: 0.6rem; }

/* diagrams */
.dm-figure {
  margin: 0 0 1.5rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background:
    radial-gradient(ellipse 120% 80% at 50% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 70%),
    color-mix(in srgb, var(--card) 50%, transparent);
}
.dm-figure img { display: block; width: 100%; height: auto; border-radius: 0.5rem; }
.dm-content p > img { max-width: 100%; height: auto; border-radius: 0.5rem; }
.dm-figure figcaption { margin-top: 0.6rem; text-align: center; font-size: 0.8rem; color: var(--muted); }

.dm-error { color: var(--muted); }

/* overview card grid (authored as raw HTML inside overview.md is not needed —
   the renderer keeps it markdown; this styles the link list it produces) */

/* ── right TOC ── */
.dm-toc {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  padding: 1.6rem 1.25rem 3rem 1rem;
}
.dm-toc-title {
  margin: 0 0 0.6rem;
  font: 700 0.72rem/1 ui-monospace, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.dm-toc-link {
  display: block;
  padding: 0.25rem 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  line-height: 1.35;
  border-left: 2px solid transparent;
  padding-left: 0.7rem;
  margin-left: -0.7rem;
}
.dm-toc-link:hover { color: var(--text); }
.dm-toc-l3 { padding-left: 1.5rem; font-size: 0.78rem; }

/* toast */
#dm-toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%) translateY(1rem);
  padding: 0.6rem 1.1rem;
  border-radius: 0.6rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 60;
}
#dm-toast.is-on { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── responsive ── */
@media (max-width: 1100px) {
  .dm-shell { grid-template-columns: 240px minmax(0, 1fr); }
  .dm-toc { display: none; }
}
@media (max-width: 820px) {
  .dm-shell { grid-template-columns: minmax(0, 1fr); }
  .dm-sidebar {
    position: fixed;
    z-index: 40;
    top: 0;
    left: 0;
    width: 270px;
    background: var(--bg);
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.4);
  }
  body.dm-sidebar-open .dm-sidebar { transform: translateX(0); }
  .dm-sidebar-toggle { display: inline-flex; }
  .dm-main { padding: 0 1.1rem 4rem; }
}