/* Useful Ventures publish theme v3
   Aura: emrah.ca terminal minimalism. IBM Plex Mono, near black canvas,
   uppercase letterspaced labels, soft cyan accent, quiet grays.
   Flat nav, no page title header, no backlinks block, gentle animations. */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --uv-bg: #0a0a0a;
  --uv-surface: #111111;
  --uv-text: #e5e7eb;
  --uv-gray: #9ca3af;
  --uv-faint: #6b7280;
  --uv-border: rgba(255, 255, 255, 0.1);
  --uv-border-strong: rgba(255, 255, 255, 0.18);
  --uv-accent: #7ec8e3;
  --uv-accent-dim: rgba(126, 200, 227, 0.7);

  --uv-bg-l: #f4f3f1;
  --uv-surface-l: #ebeae8;
  --uv-text-l: #1a1a1a;
  --uv-gray-l: #555555;
  --uv-faint-l: #888888;
  --uv-border-l: rgba(0, 0, 0, 0.12);
  --uv-accent-l: #16949b;
}

.theme-dark {
  --background-primary: var(--uv-bg);
  --background-secondary: var(--uv-bg);
  --background-modifier-border: var(--uv-border);
  --text-normal: var(--uv-text);
  --text-muted: var(--uv-gray);
  --text-faint: var(--uv-faint);
  --text-accent: var(--uv-accent);
  --text-accent-hover: var(--uv-accent);
  --interactive-accent: var(--uv-accent);
  --link-color: var(--uv-text);
  --link-color-hover: var(--uv-accent);
  --link-external-color: var(--uv-text);
  --link-external-color-hover: var(--uv-accent);
  --hr-color: var(--uv-border);
  --blockquote-border-color: var(--uv-accent-dim);
}

.theme-light {
  --background-primary: var(--uv-bg-l);
  --background-secondary: var(--uv-bg-l);
  --background-modifier-border: var(--uv-border-l);
  --text-normal: var(--uv-text-l);
  --text-muted: var(--uv-gray-l);
  --text-faint: var(--uv-faint-l);
  --text-accent: var(--uv-accent-l);
  --text-accent-hover: var(--uv-accent-l);
  --interactive-accent: var(--uv-accent-l);
  --link-color: var(--uv-text-l);
  --link-color-hover: var(--uv-accent-l);
  --link-external-color: var(--uv-text-l);
  --link-external-color-hover: var(--uv-accent-l);
  --hr-color: var(--uv-border-l);
  --blockquote-border-color: var(--uv-accent-l);
}

body {
  --font-text-theme: 'IBM Plex Mono', 'Courier New', monospace;
  --font-interface-theme: 'IBM Plex Mono', 'Courier New', monospace;
  --font-monospace-theme: 'IBM Plex Mono', Menlo, monospace;
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

/* ---------- Kill the chrome Gokul does not want ---------- */

/* No page title breadcrumb/header above content */
.page-header,
.published-container .page-header,
.markdown-preview-view .mod-header .inline-title,
.inline-title {
  display: none !important;
}

/* No "Links to this page" backlinks block */
.backlinks,
.published-section.mod-backlinks {
  display: none !important;
}

/* No graph in the right rail */
.graph-view-outer,
.published-section.mod-graph {
  display: none !important;
}

/* Hide frontmatter from readers */
.frontmatter,
.el-pre.mod-frontmatter,
.metadata-container,
.mod-header .metadata-container {
  display: none !important;
}

/* ---------- Animations ---------- */

@keyframes uv-fade-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes uv-blink {
  50% { opacity: 0; }
}

/* Content fades up on page load */
.markdown-preview-view .markdown-preview-sizer > div {
  animation: uv-fade-up 0.5s ease both;
}

/* Stagger the first few blocks */
.markdown-preview-view .markdown-preview-sizer > div:nth-child(1) { animation-delay: 0.02s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(2) { animation-delay: 0.06s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(3) { animation-delay: 0.1s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(4) { animation-delay: 0.14s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(5) { animation-delay: 0.18s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(6) { animation-delay: 0.22s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(7) { animation-delay: 0.26s; }
.markdown-preview-view .markdown-preview-sizer > div:nth-child(8) { animation-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  .markdown-preview-view .markdown-preview-sizer > div {
    animation: none;
  }
  .site-header-text::after {
    animation: none;
  }
}

/* ---------- Reading area ---------- */

.markdown-preview-view {
  --file-line-width: 700px;
  padding-top: 56px;
  padding-bottom: 96px;
}

.markdown-preview-view h1,
.markdown-rendered h1 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 1em;
}

.markdown-preview-view h1::before,
.markdown-rendered h1::before {
  content: '> ';
  color: var(--text-accent);
}

.markdown-preview-view h2,
.markdown-rendered h2 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-faint);
  margin-top: 3.2em;
  margin-bottom: 1.1em;
  padding-bottom: 0.6em;
  border-bottom: 1px solid var(--background-modifier-border);
}

.markdown-preview-view h2::before,
.markdown-rendered h2::before {
  content: '// ';
  color: var(--text-accent);
  letter-spacing: 0;
}

.markdown-preview-view h3,
.markdown-rendered h3 {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 2.2em;
}

.markdown-preview-view p,
.markdown-preview-view li {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.markdown-preview-view strong {
  color: var(--text-normal);
  font-weight: 600;
}

.markdown-preview-view h1 + p {
  color: var(--text-normal);
  font-size: 1.05rem;
  font-weight: 500;
}

/* ---------- Links ---------- */

.markdown-preview-view a,
.markdown-preview-view a.internal-link,
.markdown-preview-view a.external-link {
  color: var(--text-normal);
  text-decoration: none;
  border-bottom: 1px dashed var(--uv-accent-dim);
  background-image: none;
  padding-right: 0;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.theme-light .markdown-preview-view a,
.theme-light .markdown-preview-view a.internal-link,
.theme-light .markdown-preview-view a.external-link {
  border-bottom-color: var(--uv-accent-l);
}

.markdown-preview-view a:hover {
  color: var(--text-accent);
  border-bottom-style: solid;
}

.external-link {
  background-image: none !important;
}

.external-link::after {
  content: ' ↗';
  color: var(--text-faint);
  font-size: 0.8em;
}

/* ---------- Lists ---------- */

.markdown-preview-view ul {
  list-style: none;
  padding-inline-start: 1.3em;
}

.markdown-preview-view ul > li::before {
  content: '–';
  color: var(--text-accent);
  display: inline-block;
  width: 1.3em;
  margin-left: -1.3em;
}

.markdown-preview-view li {
  margin-bottom: 0.5em;
}

/* ---------- Header ---------- */

.site-header {
  background-color: var(--background-primary);
  border-bottom: 1px solid var(--background-modifier-border);
}

.site-header-text {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: lowercase;
  letter-spacing: 0.05em;
}

.site-header-text::after {
  content: '_';
  color: var(--text-accent);
  animation: uv-blink 1.2s steps(1) infinite;
}

/* ---------- Left navigation: flat, clean, no folder chrome ---------- */

.nav-view-outer {
  background-color: var(--background-primary);
  border-right: 1px solid var(--background-modifier-border);
  padding-top: 24px;
}

/* Hide collapse arrows entirely for a flat look */
.nav-view-outer .collapse-icon,
.nav-view-outer .tree-item-icon {
  display: none !important;
}

.nav-folder-title,
.nav-file-title {
  font-family: 'IBM Plex Mono', monospace;
  padding: 7px 18px;
  border-radius: 0;
  transition: color 0.15s ease, padding-left 0.2s ease;
}

.nav-folder-title {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.nav-file-title {
  font-size: 0.82rem;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.nav-file-title:hover,
.nav-folder-title:hover {
  color: var(--text-accent);
  background: none;
  padding-left: 24px;
}

.nav-file-title.is-active {
  color: var(--text-accent);
  background: none;
  font-weight: 600;
}

.nav-file-title.is-active::before {
  content: '> ';
}

/* Children flatten: no indent guides */
.nav-folder-children {
  margin-left: 0 !important;
  padding-left: 0 !important;
  border-left: none !important;
}

/* ---------- Right rail: outline only ---------- */

.outline-view-outer {
  background-color: var(--background-primary);
}

.outline-view-outer .tree-item-self {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-faint);
}

.outline-view-outer .tree-item-self:hover {
  color: var(--text-normal);
}

/* ---------- Components ---------- */

.popover {
  background-color: var(--uv-surface);
  border: 1px solid var(--uv-border-strong);
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.55);
  animation: uv-fade-up 0.2s ease both;
}

.theme-light .popover {
  background-color: var(--uv-surface-l);
}

.markdown-preview-view blockquote {
  border-left: 2px solid var(--blockquote-border-color);
  color: var(--text-muted);
  font-style: normal;
  background: rgba(255, 255, 255, 0.02);
}

.markdown-preview-view code {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--background-modifier-border);
  border-radius: 3px;
  font-size: 0.85em;
  color: var(--text-accent);
  padding: 0.1em 0.35em;
}

.theme-light .markdown-preview-view code {
  background: rgba(0, 0, 0, 0.04);
}

.markdown-preview-view hr {
  border: none;
  border-top: 1px dashed var(--background-modifier-border);
  margin: 3em 0;
}

button,
.clickable-icon {
  font-family: 'IBM Plex Mono', monospace;
}

/* ---------- Mobile ---------- */

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .markdown-preview-view h1,
  .markdown-rendered h1 {
    font-size: 1.35rem;
  }

  .markdown-preview-view {
    padding-top: 28px;
  }
}

/* ---------- v4: no search, theme toggle pinned top right ---------- */

/* Kill search everywhere */
.search-view-outer,
.search-button,
.published-search-icon {
  display: none !important;
}

/* Theme toggle: lift it out of the sidebar, pin top right, restyle */
.site-body-left-column-site-theme-toggle {
  display: block !important;
  position: fixed;
  top: 14px;
  right: 18px;
  z-index: 200;
}

.site-body-left-column-site-theme-toggle .checkbox-container {
  background-color: transparent;
  border: 1px solid var(--background-modifier-border);
  border-radius: 999px;
  width: 44px;
  height: 24px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.site-body-left-column-site-theme-toggle .checkbox-container:hover {
  border-color: var(--uv-accent-dim);
}

.site-body-left-column-site-theme-toggle .checkbox-container::after {
  background-color: var(--text-muted);
  width: 16px;
  height: 16px;
  top: 3px;
  left: 3px;
  transition: transform 0.25s ease, background-color 0.2s ease;
}

.site-body-left-column-site-theme-toggle .checkbox-container.is-enabled::after {
  transform: translateX(20px);
  background-color: var(--text-accent);
}

.site-body-left-column-site-theme-toggle .checkbox-container input {
  width: 100%;
  height: 100%;
}

/* Keep content clear of the pinned toggle on small screens */
@media (max-width: 600px) {
  .site-body-left-column-site-theme-toggle {
    top: 10px;
    right: 12px;
  }
}

/* ---------- v5: Useful wordmark and favicon fit ---------- */

/* Avoid duplicate branding in the top content header. The left rail is the brand. */
.site-header-logo,
.site-header-text {
  display: none !important;
}

/* Left rail wordmark: use the uploaded Useful logo as the single brand mark. */
.site-body-left-column-site-logo {
  display: block !important;
  width: 140px !important;
  height: auto !important;
  margin: 6px 18px 28px !important;
  opacity: 0.96;
}

.site-body-left-column-site-logo img,
.site-body-left-column-site-logo svg {
  width: 140px !important;
  height: auto !important;
  max-height: 44px !important;
  object-fit: contain !important;
  object-position: left center !important;
}

/* Hide the text site name beside the logo so the word Useful appears once. */
.site-body-left-column-site-name {
  display: none !important;
}

/* White logo becomes dark in light mode. */
.theme-light .site-body-left-column-site-logo img,
.theme-light .site-body-left-column-site-logo svg {
  filter: invert(1);
}

@media (max-width: 600px) {
  .site-body-left-column-site-logo {
    width: 112px !important;
    margin: 2px 18px 22px !important;
  }

  .site-body-left-column-site-logo img,
  .site-body-left-column-site-logo svg {
    width: 112px !important;
  }
}