/*
 * Likewise theme for mdBook.
 * Matches the styling of getlikewise.ai (dark-only, purple accent).
 */

:root {
  --likewise-bg-1: #07091a;
  --likewise-bg-2: #0f1230;
  --likewise-fg: #f4f3ff;
  --likewise-fg-muted: rgb(244 243 255 / 0.65);
  --likewise-fg-subtle: rgb(244 243 255 / 0.45);
  --likewise-accent: #a78bfa;
  --likewise-accent-strong: #7c5cff;
  --likewise-border: rgb(244 243 255 / 0.18);
  --likewise-border-subtle: rgb(244 243 255 / 0.08);
  --likewise-surface: rgb(244 243 255 / 0.04);
  --likewise-surface-strong: rgb(244 243 255 / 0.06);

  --content-max-width: 760px;
}

/* Override mdbook's navy theme to be Likewise. */
.navy {
  --bg: var(--likewise-bg-1);
  --fg: var(--likewise-fg);

  --sidebar-bg: transparent;
  --sidebar-fg: rgb(244 243 255 / 0.78);
  --sidebar-non-existant: var(--likewise-fg-subtle);
  --sidebar-active: var(--likewise-accent);
  --sidebar-spacer: var(--likewise-border-subtle);

  --scrollbar: rgb(244 243 255 / 0.2);

  --icons: rgb(244 243 255 / 0.55);
  --icons-hover: var(--likewise-accent);

  --links: var(--likewise-accent);

  --inline-code-color: #d6c7ff;

  --theme-popup-bg: var(--likewise-bg-2);
  --theme-popup-border: var(--likewise-border);
  --theme-hover: var(--likewise-surface);

  --quote-bg: rgb(167 139 250 / 0.06);
  --quote-border: var(--likewise-accent);

  --warning-border: #ff9966;

  --table-border-color: var(--likewise-border);
  --table-header-bg: var(--likewise-surface-strong);
  --table-alternate-bg: var(--likewise-surface);

  --searchbar-border-color: var(--likewise-border);
  --searchbar-bg: var(--likewise-surface);
  --searchbar-fg: var(--likewise-fg);
  --searchbar-shadow-color: rgb(0 0 0 / 0.5);
  --searchresults-header-fg: var(--likewise-fg-muted);
  --searchresults-border-color: var(--likewise-border);
  --searchresults-li-bg: var(--likewise-surface);
  --search-mark-bg: var(--likewise-accent-strong);

  --color-scheme: dark;
}

/* Page background uses the same gradient as getlikewise.ai. */
html.navy,
html.navy body {
  background:
    radial-gradient(1200px 600px at 12% 10%, #1a164d 0%, transparent 60%),
    radial-gradient(900px 500px at 88% 90%, #2a1a3f 0%, transparent 55%),
    linear-gradient(180deg, var(--likewise-bg-1) 0%, var(--likewise-bg-2) 100%);
  background-attachment: fixed;
  color: var(--likewise-fg);
}

html {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-feature-settings: "ss01", "cv11";
  line-height: 1.5;
}

/* Top menu bar — transparent, subtle bottom rule. */
#menu-bar,
#menu-bar.bordered,
.menu-bar {
  background: transparent;
  border-bottom: 1px solid var(--likewise-border-subtle);
}

.menu-title {
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--likewise-fg);
}

/* Sparkle in front of the book title, matching the marketing brand mark. */
.menu-title::before {
  content: "✦ ";
  color: var(--likewise-accent);
  font-weight: 400;
}

/* Hide the theme switcher — single dark theme. */
#theme-toggle,
.left-buttons #theme-toggle {
  display: none !important;
}

/* Sidebar */
.sidebar {
  background: rgb(7 9 26 / 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-right: 1px solid var(--likewise-border-subtle);
}

.sidebar .sidebar-scrollbox {
  padding: 1rem 1.25rem;
}

.chapter li.chapter-item {
  font-size: 1.5rem;
  line-height: 1.45;
  margin: 0;
}

.chapter li.chapter-item a {
  padding: 0.4rem 0.6rem;
  border-radius: 0.4rem;
  transition: background-color 120ms ease, color 120ms ease;
}

.chapter li.chapter-item a:hover {
  background: var(--likewise-surface);
  color: var(--likewise-fg);
  text-decoration: none;
}

.chapter li.chapter-item a.active {
  background: rgb(167 139 250 / 0.12);
  color: var(--likewise-accent);
  font-weight: 600;
}

/* Section headings inside the sidebar (Part 1, Part 2, Annex, etc.) */
.chapter li.part-title {
  color: var(--likewise-fg-subtle);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 1.15rem;
  padding: 1.6rem 0.6rem 0.5rem;
}

/* Content typography
   mdBook sets :root { font-size: 62.5% } so 1rem = 10px here. */
.content {
  font-size: 1.75rem;
  line-height: 1.7;
}

.content main {
  padding: 1.5rem 0 5rem;
}

.content h1,
.content h2,
.content h3,
.content h4,
.content h5 {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--likewise-fg);
}

.content h1 {
  font-size: clamp(3.2rem, 5vw, 4rem);
  line-height: 1.1;
  margin: 0 0 1.75rem;
}

.content h2 {
  font-size: clamp(2.4rem, 3.4vw, 2.9rem);
  line-height: 1.2;
  margin: 3rem 0 1.1rem;
}

.content h3 {
  font-size: clamp(1.9rem, 2.4vw, 2.2rem);
  margin: 2.25rem 0 0.85rem;
}

.content h4 {
  font-size: 1.75rem;
  margin: 1.75rem 0 0.6rem;
}

/* Slight tightening on paragraphs */
.content p {
  margin: 0 0 1rem;
}

/* Links — accent purple, dotted underline like the marketing site's CTA */
.content a:link,
.content a:visited {
  color: var(--likewise-accent);
  text-decoration: none;
  border-bottom: 1px dashed rgb(167 139 250 / 0.4);
  padding-bottom: 1px;
  transition: color 200ms ease, border-color 200ms ease;
}

.content a:hover {
  color: var(--likewise-accent);
  border-bottom-color: var(--likewise-accent);
}

/* Header anchor links — keep them subtle */
.content a.header {
  border-bottom: none;
  color: inherit;
}
.content a.header:hover {
  color: var(--likewise-accent);
}

/* Inline code */
.content code {
  background: var(--likewise-surface);
  color: var(--inline-code-color);
  border: 1px solid var(--likewise-border-subtle);
  padding: 0.1em 0.4em;
  border-radius: 0.35em;
  font-size: 0.88em;
}

/* Code blocks */
.content pre {
  background: rgb(7 9 26 / 0.6);
  border: 1px solid var(--likewise-border-subtle);
  border-radius: 0.6rem;
  padding: 1rem;
}

.content pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: 0.9em;
}

/* Tables */
.content table {
  border-collapse: collapse;
  border: 1px solid var(--likewise-border);
  border-radius: 0.6rem;
  overflow: hidden;
  margin: 1.5rem 0;
}

.content table th,
.content table td {
  border: 1px solid var(--likewise-border-subtle);
  padding: 0.6rem 0.85rem;
}

.content table th {
  background: var(--likewise-surface-strong);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.content table tr:nth-child(even) td {
  background: var(--likewise-surface);
}

/* Blockquotes — used for the "Part 2 of the spec" callout boxes */
.content blockquote {
  border-left: 3px solid var(--likewise-accent);
  background: rgb(167 139 250 / 0.06);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 0.5rem 0.5rem 0;
  color: var(--likewise-fg);
}

.content blockquote p:last-child {
  margin-bottom: 0;
}

/* Horizontal rules — subtle */
.content hr {
  border: 0;
  border-top: 1px solid var(--likewise-border-subtle);
  margin: 2.5rem 0;
}

/* Lists */
.content ul,
.content ol {
  padding-left: 1.5rem;
}

.content li {
  margin-bottom: 0.35rem;
}

/* Search bar */
#searchbar {
  background: var(--likewise-surface);
  border: 1px solid var(--likewise-border);
  border-radius: 0.5rem;
}

#searchbar:focus,
#searchbar:focus-visible {
  outline: 2px solid var(--likewise-accent);
  outline-offset: 2px;
  border-color: transparent;
}

/* "Print" / nav buttons in the menu bar */
.icon-button {
  color: var(--likewise-fg-muted);
}

.icon-button:hover {
  color: var(--likewise-accent);
  background: var(--likewise-surface);
}

/* Page navigation arrows (prev/next) */
.nav-chapters {
  color: var(--likewise-fg-subtle);
  transition: color 150ms ease;
}

.nav-chapters:hover {
  color: var(--likewise-accent);
}

/* Mobile responsive tweaks */
@media (max-width: 760px) {
  .content h1 { margin-bottom: 1.25rem; }
  .menu-title::before { content: "✦ "; }
}