/* ============================================
   Post timeline — ```timeline fenced blocks
   Rendered by assets/js/timeline.js: a dot-per-post
   timeline, a toolbar of category chips and a sort
   select, and a grid of post cards with a bar per
   metric and the thumbnail on the right.
   ============================================ */

.ec-tl {
  --ec-tl-c1: #ec4899;   /* brand pink */
  --ec-tl-c2: #2a78d6;   /* blue */
  --ec-tl-c3: #eda100;   /* amber */
  --ec-tl-c4: #008300;   /* green */
  --ec-tl-c5: #0d9488;   /* teal */
  --ec-tl-ink: var(--md-default-fg-color);
  --ec-tl-ink-2: var(--md-default-fg-color--light);
  --ec-tl-bar: var(--md-default-fg-color);
  --ec-tl-hair: color-mix(in srgb, var(--md-default-fg-color) 10%, transparent);
  --ec-tl-surface: color-mix(in srgb, var(--md-default-fg-color) 1.5%, var(--md-default-bg-color));
  position: relative;
  margin: 1em 0 1.5em;
  font-size: 0.7rem;
  line-height: 1.4;
}

[data-md-color-scheme="slate"] .ec-tl {
  --ec-tl-c2: #3987e5;
  --ec-tl-c3: #c98500;
  --ec-tl-surface: var(--md-code-bg-color);
}

.ec-tl--c1 { --c: var(--ec-tl-c1); }
.ec-tl--c2 { --c: var(--ec-tl-c2); }
.ec-tl--c3 { --c: var(--ec-tl-c3); }
.ec-tl--c4 { --c: var(--ec-tl-c4); }
.ec-tl--c5 { --c: var(--ec-tl-c5); }

/* ---- Totals: sums over the posts currently shown ---- */
.ec-tl__totals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(6.5rem, 1fr));
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.ec-tl__total {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  column-gap: 0.35rem;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--ec-tl-hair);
  border-radius: 0.5rem;
  background: var(--ec-tl-surface);
}

.ec-tl__total .ec-tl__icon {
  width: 0.75rem;
  height: 0.75rem;
}

.ec-tl__total-value {
  grid-column: 2;
  font-size: 1rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.ec-tl__total:not(:has(.ec-tl__icon)) .ec-tl__total-value {
  grid-column: 1 / -1;
}

.ec-tl__total-label {
  grid-column: 1 / -1;
  font-size: 0.55rem;
  letter-spacing: 0.02em;
  color: var(--ec-tl-ink-2);
}

/* ---- Toolbar: category chips (also the legend) and sort ---- */
.ec-tl__toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.ec-tl__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  flex: 1 1 auto;
}

.md-typeset .ec-tl__chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.1rem 0.6rem 0.1rem 0.5rem;
  border-radius: 9999px;
  font: inherit;
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--ec-tl-ink-2);
  background: color-mix(in srgb, var(--md-default-fg-color) 4%, transparent);
  border: 1px solid color-mix(in srgb, var(--md-default-fg-color) 12%, transparent);
  cursor: pointer;
  transition: border-color 0.2s ease-out, color 0.2s ease-out, background 0.2s ease-out;
}

.md-typeset .ec-tl__chip::before {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c);
  flex-shrink: 0;
}

.md-typeset .ec-tl__chip:hover {
  border-color: color-mix(in srgb, var(--c) 50%, transparent);
  color: var(--ec-tl-ink);
}

.md-typeset .ec-tl__chip[aria-pressed="true"] {
  color: var(--ec-tl-ink);
  border-color: var(--c);
  background: color-mix(in srgb, var(--c) 12%, transparent);
}

.md-typeset .ec-tl__clear {
  padding: 0.1rem 0.55rem;
  border-radius: 9999px;
  border: 1px dashed color-mix(in srgb, var(--md-default-fg-color) 25%, transparent);
  background: none;
  font: inherit;
  font-size: 0.58rem;
  color: var(--ec-tl-ink-2);
  cursor: pointer;
}

.md-typeset .ec-tl__clear:hover {
  color: var(--ec-tl-ink);
  border-color: var(--ec-tl-ink-2);
}

.ec-tl__count {
  font-weight: 400;
  opacity: 0.7;
}

.ec-tl__sort {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  font-size: 0.58rem;
  color: var(--ec-tl-ink-2);
}

.md-typeset .ec-tl__sort select {
  font: inherit;
  font-size: 0.6rem;
  padding: 0.15rem 0.5rem;
  border-radius: 0.4rem;
  border: 1px solid color-mix(in srgb, var(--md-default-fg-color) 12%, transparent);
  background: var(--md-default-bg-color);
  color: var(--ec-tl-ink);
  cursor: pointer;
}

/* ---- Rail: daily users with a dot per post ---- */
.ec-tl__rail {
  position: relative;
  width: 100%;
  margin-bottom: 0.75rem;
}

.ec-tl__popup {
  position: absolute;
  z-index: 5;
  display: flex;
  width: min(21rem, calc(100vw - 2rem));
  min-height: 5rem;
  overflow: hidden;
  border: 1px solid var(--ec-tl-hair);
  border-radius: 0.55rem;
  background: var(--md-default-bg-color);
  box-shadow: var(--ec-shadow-md);
  color: var(--ec-tl-ink);
  pointer-events: none;
}

.ec-tl__popup[hidden] {
  display: none;
}

.ec-tl__popup.is-session {
  width: auto;
  max-width: min(16rem, calc(100vw - 2rem));
  min-height: 0;
}

.ec-tl__popup-body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
  padding: 0.55rem 0.65rem;
}

.ec-tl__popup-title {
  font-size: 0.7rem;
  font-weight: 600;
  line-height: 1.3;
}

.ec-tl__popup-date {
  color: var(--ec-tl-ink-2);
  font-size: 0.58rem;
}

.ec-tl__popup-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.15rem 0.5rem;
  margin-top: 0.2rem;
}

.ec-tl__popup-stat {
  display: flex;
  justify-content: space-between;
  gap: 0.3rem;
  color: var(--ec-tl-ink-2);
  font-size: 0.58rem;
  white-space: nowrap;
}

.ec-tl__popup-value {
  color: var(--ec-tl-ink);
  font-variant-numeric: tabular-nums;
}

.ec-tl__popup-image {
  flex: 0 0 5rem;
  width: 5rem;
  object-fit: cover;
}

.ec-tl__rail svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.ec-tl__axis {
  stroke: color-mix(in srgb, var(--md-default-fg-color) 18%, transparent);
  stroke-width: 1;
}

.ec-tl__tick {
  stroke: color-mix(in srgb, var(--md-default-fg-color) 18%, transparent);
  stroke-width: 1;
}

.ec-tl__label {
  fill: var(--ec-tl-ink-2);
  font-family: var(--ec-font-body, sans-serif);
  font-size: 10px;
}

.ec-tl__dot {
  cursor: pointer;
  outline: none;
}

.ec-tl__dot circle {
  fill: var(--c);
  stroke: var(--md-default-bg-color);
  stroke-width: 2;
  transition: r 0.15s ease-out, opacity 0.2s ease-out;
}

.ec-tl__dot .ec-tl__hit {
  fill: transparent;
  stroke: none;
}

.ec-tl__dot.is-dim circle:not(.ec-tl__hit) {
  opacity: 0.18;
}

.ec-tl__dot.is-active circle:not(.ec-tl__hit),
.ec-tl__dot:hover circle:not(.ec-tl__hit),
.ec-tl__dot:focus-visible circle:not(.ec-tl__hit) {
  r: 7.5;
  opacity: 1;
}

.ec-tl__dot.is-selected circle:not(.ec-tl__hit) {
  r: 7.5;
  opacity: 1;
  stroke: var(--c);
  stroke-width: 2.5;
  fill: var(--md-default-bg-color);
}

.ec-tl__dot:focus-visible circle:not(.ec-tl__hit) {
  stroke: var(--c);
  stroke-width: 3;
}

/* Sessions: hollow diamonds below the axis, no category colour */
.ec-tl__session {
  cursor: pointer;
  outline: none;
}

.ec-tl__session .ec-tl__diamond {
  fill: var(--md-default-bg-color);
  stroke: var(--ec-tl-ink-2);
  stroke-width: 1.5;
  transition: opacity 0.2s ease-out;
}

.ec-tl__session .ec-tl__hit {
  fill: transparent;
  stroke: none;
}

.ec-tl__session:hover .ec-tl__diamond,
.ec-tl__session:focus-visible .ec-tl__diamond {
  fill: var(--ec-tl-ink-2);
  stroke: var(--ec-tl-ink);
}

.ec-tl__session.is-dim .ec-tl__diamond {
  opacity: 0.25;
}

/* the diamond key in the Sessions total keeps its outline style */
.ec-tl__total .ec-tl__session {
  cursor: default;
  opacity: 1;
  fill: none;
}

.ec-tl__total .ec-tl__session .ec-tl__diamond {
  fill: none;
}

.ec-tl__popup-kind {
  font-size: 0.55rem;
  color: var(--ec-tl-ink-2);
}

/* ---- Cards ---- */
.ec-tl__cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14.5rem, 1fr));
  gap: 0.5rem;
}

.md-typeset .ec-tl a.ec-tl__card {
  display: flex;
  align-items: stretch;
  min-width: 0;
  border: 1px solid var(--ec-tl-hair);
  border-left: 3px solid var(--c);
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--ec-tl-surface);
  /* !important: the site-wide link rule is more specific than this one */
  color: var(--ec-tl-ink) !important;
  text-decoration: none !important;
  background-image: none !important;
  box-shadow: var(--ec-shadow-sm);
  transition: transform 0.2s var(--ec-ease-out, ease-out),
              box-shadow 0.2s var(--ec-ease-out, ease-out),
              border-color 0.2s ease-out;
}

.md-typeset .ec-tl a.ec-tl__card:hover,
.md-typeset .ec-tl a.ec-tl__card:focus-visible,
.md-typeset .ec-tl a.ec-tl__card.is-active {
  border-color: color-mix(in srgb, var(--md-default-fg-color) 22%, transparent);
  border-left-color: var(--c);
  box-shadow: var(--ec-shadow-md);
  transform: translateY(-1px);
}

.ec-tl__card[hidden] {
  display: none !important;
}

.ec-tl__body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.4rem 0.55rem 0.4rem 0.6rem;
}

.ec-tl__title {
  font-size: 0.64rem;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.005em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ec-tl__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.4rem;
  font-size: 0.55rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--ec-tl-ink-2);
}

.ec-tl__cat {
  font-weight: 500;
}

/* Bars, one per metric in two columns, filled as a share of the best post */
.ec-tl__bars {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.15rem 0.4rem;
  margin-top: auto;
  padding-top: 0.3rem;
}

.ec-tl__row {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  min-width: 0;
  color: var(--ec-tl-ink-2);
}

.ec-tl__icon {
  flex-shrink: 0;
  width: 0.6rem;
  height: 0.6rem;
  fill: currentColor;
  opacity: 0.6;
}

.ec-tl__row.is-sorted {
  color: var(--ec-tl-ink);
}

.ec-tl__row.is-sorted .ec-tl__icon {
  opacity: 1;
}

.ec-tl__track {
  flex: 1 1 auto;
  min-width: 0;
  height: 4px;
  border-radius: 3px;
  background: color-mix(in srgb, var(--md-default-fg-color) 8%, transparent);
  overflow: hidden;
}

.ec-tl__fill {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: var(--ec-tl-bar);
  opacity: 0.55;
  transition: width 0.35s var(--ec-ease-out, ease-out);
}

.ec-tl__row.is-sorted .ec-tl__fill {
  opacity: 1;
}

.ec-tl__value {
  flex-shrink: 0;
  min-width: 5ch;
  margin-left: 0.2rem;
  text-align: right;
  font-size: 0.53rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.ec-tl__row.is-sorted .ec-tl__value {
  font-weight: 600;
}

/* metric name for screen readers only */
.ec-tl__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Thumbnail down the right edge, fading into the card */
.ec-tl__thumb {
  position: relative;
  flex: 0 0 4.75rem;
  width: 4.75rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--md-default-fg-color) 6%, transparent);
}

.ec-tl__thumb::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1.4rem;
  z-index: 1;
  background: linear-gradient(to right, var(--ec-tl-surface), transparent);
}

.md-content--post .md-content__inner.md-typeset .ec-tl__thumb img,
.ec-tl__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  margin: 0;
  border-radius: 0;
  transition: transform 0.5s var(--ec-ease-out, ease-out);
}

.md-typeset .ec-tl a.ec-tl__card:hover .ec-tl__thumb img,
.md-typeset .ec-tl a.ec-tl__card.is-active .ec-tl__thumb img {
  transform: scale(1.04);
}

/* ---- Empty state ---- */
.ec-tl__empty {
  grid-column: 1 / -1;
  padding: 1rem;
  text-align: center;
  font-size: 0.62rem;
  color: var(--ec-tl-ink-2);
}

/* ---- Responsive ---- */
@media screen and (max-width: 44.9375em) {
  .ec-tl__cards {
    grid-template-columns: 1fr;
  }

  .ec-tl__sort {
    margin-left: 0;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ec-tl *,
  .ec-tl *::before {
    transition: none !important;
  }
}

@media print {
  .ec-tl__toolbar { display: none; }
}