/* /portfolio/: the timeline as a git graph. Loaded only on that page, after blog.css. */

/* Lane colours: work is main (teal), education a long-lived branch (purple), projects short branches (red). */
.tl-entry[data-lane="experience"], .tl-filter[data-lane="experience"] { --lane: var(--sig); }
.tl-entry[data-lane="education"], .tl-filter[data-lane="education"] { --lane: var(--pay); }
.tl-entry[data-lane="project"], .tl-filter[data-lane="project"] { --lane: var(--hdr); }
.tl-filter[data-lane=""] { --lane: var(--ink); }
:root { --gold: #c98a04; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --gold: #f5b83d; } }
:root[data-theme="dark"] { --gold: #f5b83d; }

.tl-hero .lede p { margin: 0; }
/* Header nav on the right, as on the home page. */
.nav.nav-end { margin-left: auto; }
/* Under the title: the command the graph below draws. */
.tl-cmd { margin: -8px 0 18px; font-family: var(--mono); font-size: 13px; color: var(--faint); }
.tl-cmd span { color: var(--sig); margin-right: 4px; }

/* Filters, pinned under the header */
.tl-controls { position: sticky; top: 61px; z-index: 10; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 20px; margin: 8px calc(-1 * var(--gutter)) 32px; padding: 12px var(--gutter);
  background: var(--glass-bar); -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur); border-bottom: 1px solid var(--glass-line); }
.tl-filters { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; }
.tl-filter { flex: none; display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; font-family: var(--mono); font-size: 12.5px; color: var(--muted);
  background: var(--glass-fill); border: 1px solid var(--glass-line); box-shadow: var(--glass-hl); transition: color 160ms, border-color 160ms, background 160ms; }
.tl-filter span { font-size: 11px; color: var(--faint); }
.tl-filter:hover { color: var(--ink); }
.tl-filter[aria-pressed="true"] { color: var(--lane); border-color: color-mix(in srgb, var(--lane) 50%, var(--glass-line)); background: linear-gradient(155deg, color-mix(in srgb, var(--lane) 14%, transparent), transparent), var(--glass-fill); }
.lane-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--lane); box-shadow: 0 0 0 3px color-mix(in srgb, var(--lane) 22%, transparent); }
.tl-hint { margin: 0; font-family: var(--mono); font-size: 12px; color: var(--faint); }
.tl-hint b { color: var(--pay); font-weight: 500; }

/* Year · graph · entries · mini-map */
.tl { position: relative; display: grid; grid-template-columns: 136px 108px minmax(0, 1fr) 24px; column-gap: 8px; padding-bottom: 24px;
  overflow-x: clip; /* cards wait off to the right before sliding in; don't let that widen the page */ }
.tl-year { grid-column: 1; grid-row: 1; position: sticky; top: 150px; align-self: start; font-family: var(--display); font-weight: 800; font-size: 52px; line-height: 1; letter-spacing: -.04em;
  background: linear-gradient(180deg, var(--ink), color-mix(in srgb, var(--ink) 35%, transparent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tl-year .d { display: inline-block; }
.tl-rail { grid-column: 2; grid-row: 1; position: relative; }
.tl-graph { position: absolute; inset: 0 auto auto 0; width: 100%; overflow: visible; }
.tl-list { grid-column: 3; grid-row: 1; list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.tl-minimap { grid-column: 4; grid-row: 1; position: sticky; top: 150px; align-self: start; display: flex; flex-direction: column; align-items: center; gap: 7px; padding: 10px 0; }
.tl-minimap a { --lane: var(--sig); width: 8px; height: 8px; border-radius: 50%; background: var(--lane); opacity: .3; transition: opacity 200ms, transform 200ms var(--ease); }
.tl-minimap a[data-lane="education"] { --lane: var(--pay); }
.tl-minimap a[data-lane="project"] { --lane: var(--hdr); }
.tl-minimap a:hover { opacity: .8; }
.tl-minimap a.active { opacity: 1; transform: scale(1.5); box-shadow: 0 0 0 3px color-mix(in srgb, var(--lane) 25%, transparent); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* The graph */
.tl-graph .seg { fill: none; stroke-width: 3; stroke-linecap: round; }
.tl-graph .gap { fill: none; stroke-width: 2; stroke-linecap: round; stroke-dasharray: 1 7; opacity: .7; }
.tl-graph .branch { fill: none; stroke-width: 2.5; stroke-linecap: round; }
.tl-graph [data-lane="experience"] { stroke: var(--sig); }
.tl-graph [data-lane="education"] { stroke: var(--pay); }
.tl-graph [data-lane="project"] { stroke: var(--hdr); }
.tl-graph .node { fill: var(--bg); stroke-width: 3; transition: opacity 300ms, r 300ms; }
.tl-graph .node.now { fill: var(--sig); filter: drop-shadow(0 0 5px color-mix(in srgb, var(--sig) 75%, transparent)); }
/* Present-day ripples (timeline.js animates their radius). */
.tl-graph .radar circle { fill: none; stroke: var(--sig); stroke-width: 1.5; }
.tl-graph .radar.off { display: none; }
.tl-graph .star { fill: var(--gold); stroke: var(--bg); stroke-width: 2; }
.tl-graph .dimmed { opacity: .15; transition: opacity 300ms; }
.tl-graph .trace { fill: none; stroke: var(--pay); stroke-width: 2; stroke-dasharray: 4 6; opacity: .9; animation: trace-flow 1s linear infinite; }
@keyframes trace-flow { to { stroke-dashoffset: -20; } }
.tl-graph .node.hit { stroke: var(--pay); filter: drop-shadow(0 0 6px color-mix(in srgb, var(--pay) 70%, transparent)); }

/* Entry cards */
.tl-card { position: relative; padding: 20px 22px 18px 26px; border-radius: 20px; background: var(--glass-fill); border: 1px solid var(--glass-line); box-shadow: var(--glass-hl);
  transition: border-color 250ms, opacity 300ms, filter 300ms, box-shadow 300ms, transform 300ms var(--ease); }
.tl-card::before { content: ''; position: absolute; left: 0; top: 20px; bottom: 20px; width: 3px; border-radius: 0 3px 3px 0; background: var(--lane); opacity: .85; }
.tl-card:hover { border-color: color-mix(in srgb, var(--lane) 45%, var(--glass-line)); }
.tl-card-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 14px; align-items: start; }
.tl-card-head:not(:has(.tl-logo)) { grid-template-columns: minmax(0, 1fr) auto; }
.tl-logo { width: 48px; height: 48px; border-radius: 12px; object-fit: cover; background: #fff; border: 1px solid var(--glass-line); }
.tl-when { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; margin: 0; font-family: var(--mono); font-size: 12px; color: var(--faint); }
.tl-when .now { color: var(--sig); font-weight: 500; }
.tl-dur { padding: 1px 8px; border-radius: 999px; border: 1px solid var(--glass-line); color: var(--muted); }
.tl-card h3 { margin: 4px 0 2px; font-family: var(--display); font-weight: 700; font-size: 22px; letter-spacing: -.02em; line-height: 1.2; }
.tl-org { margin: 0; font-size: 14px; color: var(--muted); }
.tl-org a { color: inherit; text-decoration-color: color-mix(in srgb, var(--muted) 40%, transparent); }
.tl-org a:hover { color: var(--ink); }
.tl-lane-tag { font-family: var(--mono); font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--lane); padding: 3px 9px; border-radius: 999px; border: 1px solid color-mix(in srgb, var(--lane) 35%, var(--glass-line)); white-space: nowrap; }
.tl-summary { margin: 12px 0 0; color: var(--muted); font-size: 15.5px; line-height: 1.65; }
.tl-stack { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 0; padding: 0; }
.chip { font-family: var(--mono); font-size: 12px; padding: 4px 10px; border-radius: 999px; color: var(--muted); background: color-mix(in srgb, var(--sunk) 55%, transparent); border: 1px solid var(--glass-line); cursor: pointer; transition: color 160ms, border-color 160ms, background 160ms; }
.chip:hover, .chip.on { color: var(--pay); border-color: color-mix(in srgb, var(--pay) 55%, var(--glass-line)); background: color-mix(in srgb, var(--pay) 10%, transparent); }

/* Details: open by default when there is nothing to hide; folded otherwise */
.tl-more { display: grid; grid-template-rows: 1fr; }
.tl-card.collapsible .tl-more { grid-template-rows: 0fr; transition: grid-template-rows 450ms var(--ease); }
.tl-card.collapsible.open .tl-more { grid-template-rows: 1fr; }
.tl-more-inner { min-height: 0; overflow: hidden; }
.tl-highlights { margin: 16px 0 0; padding-left: 18px; display: grid; gap: 8px; color: var(--muted); font-size: 15px; line-height: 1.6; }
.tl-highlights li::marker { color: var(--lane); }
.tl-links { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; }
.tl-links a { font-family: var(--mono); font-size: 12px; padding: 6px 12px; border-radius: 999px; text-decoration: none; color: var(--ink); background: var(--glass-fill); border: 1px solid var(--glass-line); box-shadow: var(--glass-hl); transition: border-color 160ms, color 160ms; }
.tl-links a:hover { color: var(--lane); border-color: color-mix(in srgb, var(--lane) 50%, var(--glass-line)); }
.tl-links a span { color: var(--faint); }
.tl-toggle { display: inline-flex; align-items: center; gap: 8px; margin-top: 14px; padding: 0; background: none; border: 0; font-family: var(--mono); font-size: 12px; color: var(--muted); }
.tl-toggle:hover { color: var(--ink); }
.tl-toggle i { width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: translateY(-2px) rotate(45deg); transition: transform 300ms var(--ease); }
.tl-card.open .tl-toggle i { transform: translateY(1px) rotate(-135deg); }

/* A milestone (award) is a slim pill on the main line */
.tl-milestone { display: inline-flex; align-items: center; gap: 12px; padding: 10px 18px 10px 14px; border-radius: 999px; background: linear-gradient(155deg, color-mix(in srgb, var(--gold) 16%, transparent), transparent 70%), var(--glass-fill);
  border: 1px solid color-mix(in srgb, var(--gold) 45%, var(--glass-line)); box-shadow: var(--glass-hl); transition: opacity 300ms; }
.tl-milestone .star { color: var(--gold); font-size: 18px; line-height: 1; }
.tl-milestone b { display: block; font-weight: 600; font-size: 15px; }
.tl-milestone div span { font-size: 13px; color: var(--muted); }

/* Focus states: filters and skill traces dim everything else */
.tl-entry.dim .tl-card, .tl-entry.dim .tl-milestone { opacity: .28; filter: saturate(.4); }
.tl-entry.traced .tl-card { border-color: color-mix(in srgb, var(--pay) 60%, var(--glass-line)); box-shadow: var(--glass-hl), 0 0 0 1px color-mix(in srgb, var(--pay) 45%, transparent), 0 20px 50px -28px color-mix(in srgb, var(--pay) 80%, transparent); }

/* Demo overlay */
dialog.tl-video { width: min(960px, calc(100vw - 32px)); padding: 0; border: 1px solid var(--glass-line); border-radius: 20px; background: #000; overflow: hidden; box-shadow: 0 40px 100px -30px rgb(0 0 0 / .7); }
dialog.tl-video::backdrop { background: rgb(6 8 12 / .6); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
dialog.tl-video [data-close] { position: absolute; top: 10px; right: 14px; z-index: 2; color: #fff; }
.tl-video-frame { aspect-ratio: 16 / 9; }
.tl-video-frame iframe { width: 100%; height: 100%; border: 0; display: block; }

@media (max-width: 1100px) {
  .tl { grid-template-columns: 104px 96px minmax(0, 1fr); }
  .tl-year { font-size: 40px; }
  .tl-minimap { display: none; }
}
@media (max-width: 760px) {
  .tl { grid-template-columns: 52px minmax(0, 1fr); column-gap: 10px; }
  .tl-year { display: none; }
  .tl-rail { grid-column: 1; }
  .tl-list { grid-column: 2; }
  .tl-hint { display: none; }
  .tl-controls { top: 101px; }
  .tl-card { padding: 16px 16px 14px 20px; }
  .tl-card-head { grid-template-columns: auto minmax(0, 1fr); }
  .tl-lane-tag { display: none; }
  .tl-logo { width: 40px; height: 40px; }
  .tl-card h3 { font-size: 19px; }
}
@media (prefers-reduced-motion: reduce) {
  .tl-graph .trace { animation: none; }
  .tl-card.collapsible .tl-more { transition: none; }
}

/* ── Motion (only when GSAP runs; see timeline.js) ─────────── */
.tl-graph .bead { transform-box: fill-box; transform-origin: center; }
.tl-graph .bead.off { transform: scale(0); }
.tl-graph .ring { fill: none; stroke-width: 2; }
.tl-graph .head { fill: var(--sig); transition: opacity 300ms; filter: drop-shadow(0 0 4px var(--sig)) drop-shadow(0 0 12px color-mix(in srgb, var(--sig) 70%, transparent)); }
.tl-year { perspective: 600px; }
.tl-year:has(.d) { background: none; }
.tl-year .d { display: inline-block; backface-visibility: hidden; transform-origin: 50% 55%;
  background: linear-gradient(180deg, var(--ink), color-mix(in srgb, var(--ink) 35%, transparent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.tl-motion .tl-card { transition-property: border-color, opacity, filter, box-shadow; transform-style: preserve-3d; }
.tl-stats { margin-top: 22px; }