/*
 * Visual refresh
 *
 * Layered on top of naringu.css: keeps the monochrome, hairline-border look
 * and adds a shaded frame, a monospace meta layer, post cards,
 * the latent-walk hero and page transitions.
 */

:root {
  --ink: #000;
  --paper: #fff;
  --muted: #505050;
  --mono: "IBM Plex Mono", Menlo, Monaco, "Courier New", monospace;
}

/* Page transitions: cross-fade between pages, sidebar and masthead stay put */
@view-transition {
  navigation: auto;
}
.sidebar {
  view-transition-name: sidebar;
}
.masthead {
  view-transition-name: masthead;
}

/*
 * Shaded frame
 *
 * Sidebar, masthead and footer are light-grey "frame" panels around the dark
 * spectrogram stage; the white content box sits on it with a flat offset shade.
 */
:root {
  --frame: #efefef;
  --frame-line: #d6d6d6;
}
.theme-6dd .sidebar,
.sidebar,
.masthead,
.footer {
  background-color: var(--frame);
}
/* Frame panels read as one block: no borders between or around them */
html,
body,
.sidebar,
.masthead,
.footer {
  border: none;
}
.sidebar-nav-item {
  border-top-color: var(--frame-line);
}
.sidebar-nav {
  border-bottom-color: var(--frame-line);
}
.container.content {
  border: 1px solid var(--ink);
}
.masthead .container {
  background: transparent;
}
.masthead-title small,
.footer {
  font-family: var(--mono);
}
.masthead-title small {
  font-size: .7rem;
  color: var(--muted);
  margin-left: .35rem;
}

/* Monospace meta layer */
.post-date,
.meta-text,
.category-tag,
.venue-chip,
.post-list-date,
.post-card-meta time,
.hero-kicker,
.hero-stats,
.latent-walk span,
.latent-walk figcaption,
.category-label p {
  font-family: var(--mono);
}
.category-tag {
  font-weight: 500;
  letter-spacing: .02em;
}

/* Venue chip: filled counterpart to the outlined category tags */
.venue-chip {
  display: inline-block;
  font-size: .65rem;
  font-weight: 500;
  padding: .25rem .5rem;
  border: 1px solid var(--ink);
  border-radius: 3px;
  background: var(--ink);
  color: var(--paper);
  letter-spacing: .02em;
}

/* Own name in author lists */
.author-me {
  color: var(--ink);
  font-weight: 700;
  font-style: normal;
}

/* Sidebar: inverted active item */
.theme-6dd .sidebar .sidebar-nav-item.active,
.sidebar a.sidebar-nav-item:hover,
.sidebar a.sidebar-nav-item:focus {
  background-color: var(--ink);
  color: var(--paper);
}

/* Links in running text: underline slides in */
.post p a,
.page p a,
.page li a {
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0% 1px;
  transition: background-size .25s ease;
}
.post p a:hover,
.page p a:hover,
.page li a:hover,
.post p a:focus,
.page p a:focus,
.page li a:focus {
  text-decoration: none;
  background-size: 100% 1px;
}

/*
 * Home: hero
 */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--ink);
}
.hero-kicker {
  margin: 0 0 .5rem;
  font-size: .75rem;
  color: var(--muted);
}
.hero-title {
  margin: 0 0 1rem;
  font-size: 1.6rem;
  line-height: 1.25;
  color: var(--ink);
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0;
  font-size: .75rem;
}
.hero-stats span {
  padding: .2rem .5rem;
  border: 1px solid var(--ink);
}
.hero-stats b {
  font-weight: 500;
}

/* Latent walk: frames light up one after another */
.latent-walk {
  margin: 0;
}
.latent-walk-frames {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .5rem;
}
.latent-walk-frame {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}
.latent-walk-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  margin: 0;
  border: 1px solid var(--ink);
  border-radius: 0;
  image-rendering: pixelated;
  filter: grayscale(1) contrast(1.1);
  opacity: .55;
  animation: latent-walk 7.5s infinite;
  animation-delay: calc(var(--i) * 1.5s);
}
.latent-walk-frame span {
  font-size: .6rem;
  line-height: 1.2;
  color: var(--muted);
  text-align: center;
}
.latent-walk figcaption {
  margin-top: .75rem;
  font-size: .65rem;
  color: var(--muted);
}

@keyframes latent-walk {
  0%, 18% {
    filter: none;
    opacity: 1;
    transform: translate(-3px, -3px);
    box-shadow: 3px 3px 0 var(--ink);
  }
  24%, 100% {
    filter: grayscale(1) contrast(1.1);
    opacity: .55;
    transform: none;
    box-shadow: none;
  }
}

/*
 * Home: post cards
 */
.posts .post-card {
  position: relative;
  margin: 0 0 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--ink);
  background: var(--paper);
  transition: transform .15s ease, box-shadow .15s ease;
}
.posts .post-card:hover,
.posts .post-card:focus-within {
  transform: translate(-4px, -4px);
  box-shadow: 4px 4px 0 var(--ink);
}
/* Every preview sits in the same fixed-height frame, about the height of the text part */
.post-card {
  --teaser-h: 180px;
}
.post-card-teaser {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  height: var(--teaser-h);
  margin: -1.25rem -1.25rem 1rem;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--ink);
  background: var(--paper);
  overflow: hidden;
}
.post-card-teaser img {
  flex: 0 1 auto;
  min-width: 0;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  margin: 0;
  border-radius: 0;
  object-fit: contain;
  filter: grayscale(1);
  transition: filter .3s ease;
}
/* Several separate figures side by side share the frame height */
.post-card-teaser-row img {
  height: 100%;
}
.post-card:hover .post-card-teaser img,
.post-card:focus-within .post-card-teaser img {
  filter: none;
}
.post-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .4rem;
  margin-bottom: .6rem;
}
.post-card-meta time {
  margin-right: .35rem;
  font-size: .75rem;
  color: var(--muted);
}
.post-card-title {
  margin: 0 0 .35rem;
  font-size: 1.35rem;
  line-height: 1.3;
}
.theme-6dd .post .post-card-title a,
.post-card-title a {
  color: var(--ink);
  text-decoration: none;
}
/* Whole card is clickable */
.post-card-title a::after {
  content: "";
  position: absolute;
  inset: 0;
}
.post-card-authors {
  margin-bottom: .6rem;
  font-size: .9rem;
  font-style: italic;
  color: var(--muted);
}
.post-card-excerpt {
  margin: 0;
  font-size: .9rem;
  color: #202020;
}

@media (max-width: 48em) {
  .hero {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .hero-title {
    font-size: 1.3rem;
  }
  .latent-walk-frames {
    gap: .3rem;
  }
  .latent-walk-frame span {
    font-size: .5rem;
  }
  .posts .post-card {
    padding: 1rem;
  }
  .post-card-teaser {
    margin: -1rem -1rem 1rem;
  }
  .post-card-title {
    font-size: 1.15rem;
  }
  .post-card {
    --teaser-h: 130px;
  }
  .post-card-teaser {
    gap: .5rem;
    padding: .5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .latent-walk-frame img {
    animation: none;
    filter: none;
    opacity: 1;
  }
  .posts .post-card,
  .post-card-teaser img {
    transition: none;
  }
}

/* Room for the card hover lift inside the scroll container */
.posts.scrollable-content {
  padding-left: 6px;
  margin-left: -6px;
}

/* Catalogue dates: ISO format in the monospace column */
.post-list-date {
  flex-basis: 6.5rem;
  font-size: .8rem;
}
@media (max-width: 48em) {
  .post-list-date {
    flex-basis: auto;
  }
}

/*
 * About: "now" box
 */
.now-box {
  position: relative;
  clear: both;
  margin: 2rem 0;
  padding: 1.25rem 1.25rem 1rem;
  border: 1px solid var(--ink);
}
.now-label {
  position: absolute;
  top: -.7rem;
  left: 1rem;
  padding: 0 .4rem;
  background: var(--paper);
  font-family: var(--mono);
  font-size: .75rem;
}
.now-label::before {
  content: "";
  display: inline-block;
  width: .5rem;
  height: .5rem;
  margin-right: .35rem;
  border-radius: 50%;
  background: var(--ink);
  animation: now-pulse 2s ease-in-out infinite;
}
@keyframes now-pulse {
  50% { opacity: .2; }
}
.now-box ul {
  margin-bottom: 1rem;
  padding-left: 1.1rem;
}
.now-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}
.theme-6dd .container a.action-button,
.action-button {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .75rem;
  border: 1px solid var(--ink);
  background-image: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size: .75rem;
  transition: transform .15s ease, box-shadow .15s ease;
}
.theme-6dd .container a.action-button-primary {
  background: var(--ink);
  color: var(--paper);
}
.theme-6dd .container a.action-button:hover,
.theme-6dd .container a.action-button:focus {
  text-decoration: none;
  transform: translate(-2px, -2px);
  box-shadow: 2px 2px 0 var(--ink);
}

/*
 * About: timeline with work (main lane) and education (branch lane)
 */
.tl-legend {
  display: flex;
  gap: 1rem;
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--muted);
}
.tl-legend span::before {
  content: "";
  display: inline-block;
  width: .6rem;
  height: .6rem;
  margin-right: .35rem;
  border: 2px solid var(--ink);
  border-radius: 50%;
  vertical-align: -1px;
}
.tl-legend-work::before {
  background: var(--ink);
}
.timeline {
  margin: 1rem 0 2rem;
  padding: 0;
  list-style: none;
}
.tl-item {
  --w: .6rem;
  --e: 2.2rem;
  --dot: .6rem;
  --origin: 0rem;
  position: relative;
  padding: 0 0 1.5rem 3.6rem;
}
.tl-item::before,
.tl-item::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ink);
}
.tl-item::before {
  left: calc(var(--origin) + var(--w) - 1px);
}
.tl-item::after {
  left: calc(var(--origin) + var(--e) - 1px);
}
.w-none::before,
.e-none::after {
  display: none;
}
.w-from-dot::before {
  top: var(--dot);
}
.w-to-dot::before {
  bottom: auto;
  height: var(--dot);
}
.e-to-dot::after {
  bottom: auto;
  height: var(--dot);
}
.tl-dot {
  position: absolute;
  z-index: 1;
  top: calc(var(--dot) - .4rem);
  width: .8rem;
  height: .8rem;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--ink);
}
.tl-work .tl-dot {
  left: calc(var(--origin) + var(--w) - .4rem);
}
.tl-edu .tl-dot {
  left: calc(var(--origin) + var(--e) - .4rem);
  background: var(--paper);
}
.tl-current .tl-dot {
  box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--ink);
}
/* Work lane branches off the education lane */
.tl-fork {
  position: absolute;
  left: calc(var(--origin) + var(--w) - 1px);
  top: var(--dot);
  width: calc(var(--e) - var(--w));
  height: 1.5rem;
  border-left: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  border-bottom-left-radius: 1rem;
}
.tl-date {
  display: block;
  font-family: var(--mono);
  font-size: .75rem;
  line-height: 1.2rem;
  color: var(--muted);
}
.tl-title {
  margin: .1rem 0 .15rem;
  font-size: 1.1rem;
  color: var(--ink);
}
.tl-org {
  margin-bottom: .25rem;
  font-size: .9rem;
}
.tl-desc {
  margin-bottom: 0;
  font-size: .9rem;
  color: #202020;
}
.tl-details summary {
  cursor: pointer;
  font-size: .9rem;
}
.tl-details ul {
  margin: .35rem 0 0;
  font-size: .9rem;
}

/* Desktop: work entries left of the lanes, education entries right */
@media (min-width: 48.01em) {
  .tl-legend {
    justify-content: center;
  }
  .tl-item {
    --origin: calc(50% - 1.4rem);
    display: grid;
    grid-template-columns: minmax(0, 1fr) 2.8rem minmax(0, 1fr);
    padding: 0 0 1.5rem;
  }
  .tl-work .tl-body {
    grid-column: 1;
    padding-right: .75rem;
    text-align: right;
  }
  .tl-edu .tl-body {
    grid-column: 3;
    padding-left: .75rem;
  }
  .tl-work .tl-details ul {
    list-style-position: inside;
    padding-left: 0;
  }
}

@media (max-width: 48em) {
  .tl-item {
    --e: 1.9rem;
    padding-left: 3rem;
  }
}
@media (prefers-reduced-motion: reduce) {
  .now-label::before {
    animation: none;
  }
}

/* University logos next to education entries: black, colour on hover */
.tl-logo {
  display: block;
  height: 30px;
  width: auto;
  max-width: 230px;
  margin: 0 0 .4rem;
  border-radius: 0;
  object-fit: contain;
  filter: brightness(0);
  transition: filter .25s ease;
}
.tl-logo-raster {
  filter: grayscale(1) contrast(1.6);
}
.tl-item:hover .tl-logo {
  filter: none;
}

/*
 * Desktop frame layout: header and footer span the full width, the sidebar
 * sits between them, and the content box gets an outer outline joined to it
 * by diagonals at the corners.
 */
@media (min-width: 48.01em) {
  :root {
    --head-h: 62px;
    --foot-h: 50px;
    --sidebar-w: 14rem;
  }
  .masthead {
    position: relative;
    z-index: 11;
    height: var(--head-h);
    margin-left: calc(-1 * var(--sidebar-w));
    padding-left: var(--sidebar-w);
  }
  /* Sidebar tucks slightly under the footer so no stage pixels show between */
  .sidebar {
    top: var(--head-h);
    bottom: calc(var(--foot-h) - 4px);
  }
  .footer {
    z-index: 11;
  }
  /* Nav buttons: no dividers, 80% wide, centred */
  .sidebar-nav {
    border-bottom: none;
    padding-top: .75rem;
  }
  .sidebar-nav-item,
  .sidebar-nav-item:first-child {
    width: 80%;
    margin: 0 auto .25rem;
    border-top: none;
  }

  /* Black frame: outer page edge, inner edge along the stage, mitred corners */
  body {
    border: 1px solid var(--ink);
  }
  /* Inner edge lines start at the stage corner, not over the sidebar */
  .masthead::after,
  .footer::after {
    content: "";
    position: absolute;
    left: var(--sidebar-w);
    right: 0;
    height: 1px;
    background: var(--ink);
  }
  .masthead::after {
    bottom: 0;
  }
  .footer::after {
    top: 0;
  }
  .sidebar {
    border-right: 1px solid var(--ink);
  }
  .masthead::before,
  .footer::before {
    content: "";
    position: absolute;
    left: 0;
    width: var(--sidebar-w);
    pointer-events: none;
  }
  /* Top-left mitre: page corner to stage corner */
  .masthead::before {
    top: 0;
    bottom: 0;
    background: linear-gradient(to top right, transparent calc(50% - .75px), var(--ink) calc(50% - .75px), var(--ink) calc(50% + .75px), transparent calc(50% + .75px));
  }
  /* Bottom-left mitre */
  .footer::before {
    top: 0;
    bottom: 0;
    background: linear-gradient(to bottom right, transparent calc(50% - .75px), var(--ink) calc(50% - .75px), var(--ink) calc(50% + .75px), transparent calc(50% + .75px));
  }
}


/* 404: endless zoom into nested, rotating squares (Droste effect) */
.droste-wrap {
  clear: both;
  display: flex;
  justify-content: center;
  margin: 1rem 0 2rem;
}
.droste {
  width: min(320px, 80%);
  height: auto;
  color: var(--ink);
}
.droste-zoom {
  animation: droste 1.6s linear infinite;
}
@keyframes droste {
  from { transform: rotate(0deg) scale(1); }
  to { transform: rotate(-8deg) scale(1.16279); }
}
@media (prefers-reduced-motion: reduce) {
  .droste-zoom {
    animation: none;
  }
}