/* ==========================================================================
   Site background
   ========================================================================== */

html {
  background-color: #eeeeee;
}

body {
  position: relative;
  isolation: isolate;
  background-color: transparent;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: var(--site-background-image);
  background-position: var(--site-background-position);
  background-size: var(--site-background-size);
  background-repeat: var(--site-background-repeat);
  opacity: var(--site-background-opacity);
}

/* Keep article text readable while allowing the site background to show through. */
.layout--single .page__content {
  padding: clamp(1.15rem, 2.5vw, 2rem);
  color: #252a32;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.52), rgba(244, 249, 252, 0.28));
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 1.1rem;
  box-shadow:
    0 1rem 3rem rgba(31, 38, 50, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    inset 0 -1px 0 rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
  backdrop-filter: blur(22px) saturate(1.35);
}

@media (max-width: 600px) {
  .layout--single .page__content {
    padding: 1rem;
    border-radius: 0.85rem;
  }
}

/* Use the spare outer gutter on wide screens to separate the TOC from the article. */
@media (min-width: 1440px) {
  .layout--single .sidebar__right {
    margin-inline-end: calc(
      -300px - clamp(2rem, calc(33.333vw - 426.667px), 6rem)
    );
  }
}

/* Author profile: a calm, opaque panel instead of another glass surface. */
.sidebar {
  opacity: 1;
}

.sidebar > .h-card {
  position: relative;
  isolation: isolate;
  box-sizing: border-box;
  padding: clamp(1.05rem, 1.8vw, 1.4rem);
  color: #3c4852;
  background:
    radial-gradient(circle at 92% 7%, rgba(72, 181, 166, 0.2) 0 2.8rem, transparent 2.85rem),
    radial-gradient(circle at 107% 20%, rgba(255, 183, 100, 0.16) 0 5rem, transparent 5.05rem),
    linear-gradient(145deg, #fffaf0 0%, #edf6f2 100%);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 1.25rem 1.25rem 0.85rem 1.25rem;
  box-shadow:
    0 1rem 2.4rem rgba(39, 51, 58, 0.18),
    inset 0 1px 0 #ffffff,
    inset 0 -1px 0 rgba(64, 124, 119, 0.08);
}

.sidebar > .h-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.25rem;
  right: 1.25rem;
  height: 0.24rem;
  background: linear-gradient(90deg, #2ba6b6, #6d65df 52%, #ef9b63);
  border-radius: 0 0 999px 999px;
  box-shadow: 0 0.3rem 0.85rem rgba(74, 127, 175, 0.24);
  pointer-events: none;
}

.sidebar > .h-card .author__name,
.sidebar > .h-card .author__name a {
  color: #26343d;
}

.sidebar > .h-card .author__bio,
.sidebar > .h-card .author__urls,
.sidebar > .h-card .author__urls a {
  color: #52616a;
}

.sidebar > .h-card .author__bio {
  line-height: 1.75;
}

.sidebar > .h-card .author__urls li {
  margin-block: 0.12rem;
}

.sidebar > .h-card .author__urls li[itemprop="homeLocation"] {
  padding: 0.42rem 0.5rem;
}

.sidebar > .h-card .author__urls a {
  display: flex;
  align-items: center;
  margin-bottom: 0;
  padding: 0.42rem 0.5rem;
  border-radius: 0.65rem;
  transition:
    color 180ms ease,
    background-color 180ms ease,
    transform 180ms ease;
}

.sidebar > .h-card .author__urls i {
  display: inline-grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  margin-inline-end: 0.15rem;
  color: #318c92;
  background: rgba(49, 140, 146, 0.1);
  border-radius: 50%;
}

.sidebar > .h-card .author__urls a:hover,
.sidebar > .h-card .author__urls a:focus-visible {
  color: #007f8f;
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.72);
  transform: translateX(0.18rem);
  outline: none;
}

@media (min-width: 1024px) {
  .sidebar > .h-card .author__avatar {
    width: 7.2rem;
    height: 7.2rem;
    margin: 0.35rem auto 0.9rem;
  }

  .sidebar > .h-card .author__avatar img {
    width: 100%;
    height: 100%;
    max-width: none;
    padding: 0.35rem;
    object-fit: cover;
    background: #ffffff;
    border: 1px solid rgba(48, 126, 132, 0.38);
    box-shadow:
      0 0 0 0.28rem rgba(255, 255, 255, 0.64),
      0 0.7rem 1.3rem rgba(31, 73, 77, 0.22);
  }

  .sidebar > .h-card .author__content {
    text-align: center;
  }

  .sidebar > .h-card .author__name {
    letter-spacing: 0.015em;
  }

  .sidebar > .h-card .author__name::after {
    content: "";
    display: block;
    width: 2.2rem;
    height: 0.18rem;
    margin: 0.6rem auto 0.15rem;
    background: linear-gradient(90deg, #2ba6b6, #6d65df);
    border-radius: 999px;
  }

  .sidebar > .h-card .author__bio {
    margin-bottom: 0.55rem;
    padding-bottom: 0.85rem;
    text-align: left;
    border-bottom: 1px solid rgba(54, 101, 104, 0.13);
  }
}

@media (max-width: 600px) {
  .sidebar > .h-card {
    padding: 0.85rem;
    border-radius: 0.85rem;
  }
}

/* Let the global background continue through the navigation bar. */
.masthead {
  background-color: rgba(255, 255, 255, 0.22);
  border-bottom-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 0.35rem 1.4rem rgba(34, 40, 49, 0.08);
  -webkit-backdrop-filter: blur(12px) saturate(1.15);
  backdrop-filter: blur(12px) saturate(1.15);
}

.masthead .greedy-nav {
  background: transparent;
}

.masthead .greedy-nav .visible-links a {
  margin: 0 0.22rem;
  padding: 0.55rem 0.8rem;
  transition: filter 180ms ease;
}

/* Disable Minimal Mistakes' blue underline reveal. */
.masthead .greedy-nav .visible-links a::before {
  content: none;
  display: none;
}

.masthead .greedy-nav .visible-links a:hover,
.masthead .greedy-nav .visible-links a:focus-visible,
.masthead .greedy-nav .hidden-links a:hover,
.masthead .greedy-nav .hidden-links a:focus-visible {
  color: transparent;
  background-color: transparent;
  background-image: linear-gradient(
    90deg,
    #00c6ff 0%,
    #7b61ff 22%,
    #ff4ecd 45%,
    #ff9f43 68%,
    #35e6a5 86%,
    #00c6ff 100%
  );
  background-size: 300% 100%;
  background-position: 0 50%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter:
    drop-shadow(0 0 0.28rem rgba(0, 198, 255, 0.7))
    drop-shadow(0 0 0.5rem rgba(255, 78, 205, 0.4));
  box-shadow: none;
  transform: none;
  animation: nav-spectrum-flow 3s linear infinite;
  outline: none;
}

@keyframes nav-spectrum-flow {
  from {
    background-position: 0 50%;
  }

  to {
    background-position: 300% 50%;
  }
}

.masthead .search__toggle,
.masthead .greedy-nav__toggle {
  border-radius: 0.7rem;
  transition: filter 180ms ease;
}

.masthead .search__toggle:hover,
.masthead .search__toggle:focus-visible,
.masthead .greedy-nav__toggle:hover,
.masthead .greedy-nav__toggle:focus-visible {
  transform: none;
  background-color: transparent;
  box-shadow: none;
  filter: drop-shadow(0 0 0.42rem rgba(0, 146, 202, 0.72));
  outline: none;
}

.masthead .greedy-nav .hidden-links {
  background: rgba(255, 255, 255, 0.88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

/* ========================================================================== 
   Post cards
   ========================================================================== */

.entries-list .archive-card-wrap {
  margin-bottom: 1.25rem;
}

.archive__item--card {
  position: relative;
  min-height: 10rem;
  padding: 1.4rem 1.5rem;
  overflow: hidden;
  isolation: isolate;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(57, 62, 70, 0.13);
  border-radius: 1rem;
  box-shadow: 0 0.35rem 1.25rem rgba(34, 40, 49, 0.08);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease,
    background-color 220ms ease;
}

.archive__item--card:hover,
.archive__item--card:focus-within {
  transform: translateY(-0.35rem);
  background: rgba(255, 255, 255, 0.97);
  border-color: rgba(0, 146, 202, 0.7);
  box-shadow:
    0 1.15rem 2.5rem rgba(34, 40, 49, 0.18),
    0 0 0 0.2rem rgba(0, 146, 202, 0.1);
}

.archive__item-card-cover {
  position: absolute;
  inset: 0 0 0 auto;
  z-index: -2;
  width: 62%;
  max-width: 38rem;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, rgba(0, 0, 0, 0.28) 24%, #000 68%);
  mask-image: linear-gradient(to right, transparent 0%, rgba(0, 0, 0, 0.28) 24%, #000 68%);
}

.archive__item-card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0.82) 0%,
    rgba(255, 255, 255, 0.28) 42%,
    rgba(255, 255, 255, 0.04) 100%
  );
}

.archive__item-card-cover img {
  width: calc(100% + 2rem);
  height: 100%;
  max-width: none;
  object-fit: cover;
  transform: translateX(1rem) scale(1.04);
  transition: transform 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.archive__item--card:hover .archive__item-card-cover img,
.archive__item--card:focus-within .archive__item-card-cover img {
  transform: translateX(-0.8rem) scale(1.08);
}

.archive__item--card .archive__item-card-content {
  position: static;
  width: 74%;
  max-width: 42rem;
}

.archive__item--card .archive__item-title {
  margin-top: 0;
}

.archive__item--card .archive__item-title a {
  color: inherit;
  text-decoration: none !important;
  border-bottom: 0;
  background-image: none;
  transition: none;
}

/* Stretch the primary post link across the card without nesting block content in an anchor. */
.archive__item--card .archive__item-card-link {
  position: static;
}

.archive__item--card .archive__item-card-link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
}

.archive__item--card .archive__item-permalink {
  position: relative;
  z-index: 4;
}

.archive__item--card:hover .archive__item-title a,
.archive__item--card:focus-within .archive__item-title a {
  color: inherit;
  text-decoration: none !important;
}

@media (max-width: 600px) {
  .archive__item--card {
    min-height: 9rem;
    padding: 1.1rem;
  }

  .archive__item-card-cover {
    width: 68%;
    opacity: 0.72;
  }

  .archive__item--card .archive__item-card-content {
    width: 86%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .masthead .greedy-nav .visible-links a:hover,
  .masthead .greedy-nav .visible-links a:focus-visible,
  .masthead .greedy-nav .hidden-links a:hover,
  .masthead .greedy-nav .hidden-links a:focus-visible {
    animation: none;
    background-position: 50% 50%;
  }

  .archive__item--card,
  .archive__item-card-cover img {
    transition: none;
  }

  .archive__item--card:hover,
  .archive__item--card:focus-within,
  .archive__item--card:hover .archive__item-card-cover img,
  .archive__item--card:focus-within .archive__item-card-cover img {
    transform: none;
  }
}

/* ==========================================================================
   Post series and GitBook-like chapter navigation
   ========================================================================== */

.series-card__eyebrow,
.series-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem 0.85rem;
  color: #5d6875;
  font-size: 0.78rem;
}

.series-card__eyebrow {
  margin-bottom: 0.45rem;
  font-weight: 700;
}

.series-card__badge {
  padding: 0.18rem 0.52rem;
  color: #ffffff;
  letter-spacing: 0.08em;
  background: linear-gradient(120deg, #0092ca, #7259df);
  border-radius: 999px;
}

.series-card__description {
  margin-bottom: 0.8rem;
}

.series-card__meta {
  margin: 0;
}

.series-card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.series-page {
  width: 100%;
  margin: 1rem 0 3rem;
}

.series-page__hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(16rem, 0.8fr);
  min-height: 19rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(57, 62, 70, 0.12);
  border-radius: 1.25rem;
  box-shadow: 0 1.1rem 2.8rem rgba(34, 40, 49, 0.13);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.series-page__hero-content {
  position: relative;
  z-index: 2;
  align-self: center;
  padding: clamp(1.6rem, 4vw, 3.2rem);
}

.series-page__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.8rem;
  color: #007da9;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.series-page__hero h1 {
  margin: 0;
  color: #222831;
  font-size: clamp(2rem, 5vw, 3.7rem);
  line-height: 1.08;
}

.series-page__description {
  max-width: 42rem;
  margin: 1rem 0;
  color: #4f5965;
  font-size: 1.05rem;
  line-height: 1.7;
}

.series-page__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.25rem;
}

.series-page__meta span {
  padding: 0.3rem 0.7rem;
  color: #3f4b57;
  font-size: 0.76rem;
  font-weight: 700;
  background: rgba(238, 246, 249, 0.9);
  border: 1px solid rgba(0, 146, 202, 0.12);
  border-radius: 999px;
}

.series-page__cover {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 38%);
  mask-image: linear-gradient(to right, transparent 0%, #000 38%);
}

.series-page__cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(255, 255, 255, 0.48), transparent 55%);
}

.series-page__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

.series-page__hero:hover .series-page__cover img {
  transform: scale(1.035);
}

.series-page__chapters {
  margin-top: 2rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(57, 62, 70, 0.11);
  border-radius: 1.1rem;
  box-shadow: 0 0.7rem 2rem rgba(34, 40, 49, 0.08);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.series-page__section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.series-page__section-heading p {
  margin: 0 0 0.2rem;
  color: #0092ca;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.series-page__section-heading h2 {
  margin: 0;
  color: #222831;
}

.series-page__start {
  flex: 0 0 auto;
  padding: 0.52rem 0.8rem;
  color: #006f99;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  background: rgba(0, 146, 202, 0.08);
  border-radius: 0.65rem;
}

.series-page__start:hover {
  color: #005a7c;
  background: rgba(0, 146, 202, 0.14);
}

.series-chapter-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: series-chapter;
}

.series-chapter-list li + li {
  margin-top: 0.65rem;
}

.series-chapter {
  display: grid;
  grid-template-columns: 2.8rem minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  color: #303844;
  text-decoration: none;
  background: rgba(248, 250, 252, 0.82);
  border: 1px solid rgba(57, 62, 70, 0.09);
  border-radius: 0.8rem;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease;
}

.series-chapter:hover,
.series-chapter:focus-visible {
  color: #222831;
  text-decoration: none;
  transform: translateX(0.3rem);
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(0, 146, 202, 0.35);
  box-shadow: 0 0.55rem 1.3rem rgba(34, 40, 49, 0.1);
  outline: none;
}

.series-chapter__number {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  color: #007fae;
  font-size: 0.85rem;
  font-weight: 800;
  background: rgba(0, 146, 202, 0.1);
  border-radius: 50%;
}

.series-chapter__content {
  min-width: 0;
}

.series-chapter__title,
.series-chapter__excerpt {
  display: block;
}

.series-chapter__title {
  overflow: hidden;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.series-chapter__excerpt {
  margin-top: 0.25rem;
  overflow: hidden;
  color: #68727e;
  font-size: 0.76rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.series-chapter__date {
  color: #7b8490;
  font-size: 0.72rem;
  white-space: nowrap;
}

.series-chapter__arrow {
  color: #0092ca;
  font-size: 1.05rem;
}

.series-context {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem 0.75rem;
  clear: both;
  margin: 0.25rem 0 1.35rem;
  padding: 0.15rem 0 0.15rem 0.75rem;
  color: #4d5864;
  font-size: 0.8rem;
  background: transparent;
  border: 0;
  border-inline-start: 3px solid rgba(0, 146, 202, 0.55);
  border-radius: 0;
}

.series-context a {
  color: #007da9;
  font-weight: 700;
  text-decoration: none;
}

.series-context__label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
}

.series-context__directory {
  margin-inline-start: auto;
}

.series-pagination {
  /* Match the theme's floated pagination flow so this starts below the article. */
  float: left;
  float: inline-start;
  clear: both;
  width: 100%;
  box-sizing: border-box;
  margin-top: 2.5rem;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(57, 62, 70, 0.12);
  border-radius: 1rem;
  box-shadow: 0 0.8rem 2rem rgba(34, 40, 49, 0.1);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.series-pagination__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.series-pagination__header > div {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.series-pagination__header a {
  color: #303844;
  font-weight: 800;
  text-decoration: none;
}

.series-pagination__eyebrow,
.series-pagination__count,
.series-pagination__direction {
  color: #6b7480;
  font-size: 0.72rem;
}

.series-pagination__progress {
  height: 0.32rem;
  margin: 0.9rem 0 1rem;
  overflow: hidden;
  background: rgba(57, 62, 70, 0.1);
  border-radius: 999px;
}

.series-pagination__progress span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #0092ca, #7658df, #ff4ecd);
  border-radius: inherit;
}

.series-pagination__links {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: stretch;
}

.series-pagination__link {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 0.75rem 0.85rem;
  color: #303844;
  text-decoration: none;
  background: rgba(246, 249, 251, 0.9);
  border: 1px solid transparent;
  border-radius: 0.75rem;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    box-shadow 160ms ease;
}

.series-pagination__link strong {
  margin-top: 0.22rem;
  overflow: hidden;
  font-size: 0.8rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.series-pagination__link.is-next {
  text-align: right;
}

a.series-pagination__link:hover,
a.series-pagination__link:focus-visible {
  color: #222831;
  text-decoration: none;
  background: #ffffff;
  border-color: rgba(0, 146, 202, 0.3);
  box-shadow: 0 0.4rem 1rem rgba(34, 40, 49, 0.08);
  outline: none;
}

.series-pagination__link.is-disabled {
  color: #9aa1aa;
  background: rgba(246, 249, 251, 0.45);
}

.series-pagination__directory {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  min-width: 3.8rem;
  color: #007da9;
  font-size: 0.7rem;
  text-decoration: none;
  background: rgba(0, 146, 202, 0.08);
  border-radius: 0.75rem;
}

.series-pagination__directory:hover,
.series-pagination__directory:focus-visible {
  color: #006387;
  text-decoration: none;
  background: rgba(0, 146, 202, 0.14);
  outline: none;
}

@media (max-width: 760px) {
  .series-page__hero {
    grid-template-columns: 1fr;
  }

  .series-page__cover {
    position: absolute;
    inset: 0;
    opacity: 0.22;
    -webkit-mask-image: linear-gradient(to right, transparent, #000);
    mask-image: linear-gradient(to right, transparent, #000);
  }

  .series-page__section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .series-chapter {
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
  }

  .series-chapter__date {
    display: none;
  }

  .series-context__directory {
    width: 100%;
    margin-inline-start: 0;
  }

  .series-pagination__header {
    align-items: flex-start;
  }

  .series-pagination__links {
    grid-template-columns: 1fr 3.5rem 1fr;
  }
}

@media (max-width: 480px) {
  .series-pagination__links {
    grid-template-columns: 1fr 1fr;
  }

  .series-pagination__directory {
    grid-column: 1 / -1;
    grid-row: 2;
    min-height: 2.7rem;
  }

  .series-pagination__link.is-next {
    grid-column: 2;
    grid-row: 1;
  }

  .series-pagination__link {
    min-height: 4.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .series-page__cover img,
  .series-chapter,
  .series-pagination__link {
    transition: none;
  }

  .series-page__hero:hover .series-page__cover img,
  .series-chapter:hover,
  .series-chapter:focus-visible {
    transform: none;
  }
}