/* ============================================================
   components.css — hero, portrait, timeline, cards, contact
   ============================================================ */

:root {
  --shell-w: calc(var(--col-scale) + var(--shell-gap) + var(--col-flow));
}

.shell { max-width: calc(var(--shell-w) + var(--gutter) * 2); margin-inline: auto; }

/* ── hero ─────────────────────────────────────────────────── */
.hero {
  max-width: calc(var(--shell-w) + var(--gutter) * 2);
  margin-inline: auto;
  padding: calc(var(--masthead-h) + var(--space-2xl)) var(--gutter) var(--space-xl);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  align-items: center;
}

.hero__lede > * + * { margin-top: var(--space-m); }

.hero__name {
  font-size: var(--step-7);
  font-weight: 800;
  font-variation-settings: 'wdth' 118;
  line-height: 0.87;
  letter-spacing: -0.038em;
  margin-top: var(--space-s);
}

.hero__role {
  font-family: var(--font-prose);
  font-size: var(--step-2);
  font-style: italic;
  font-weight: 300;
  line-height: 1.32;
  color: var(--ink);
  max-width: 24ch;
  padding-top: var(--space-2xs);
}

.hero__intro {
  max-width: 46ch;
  color: var(--ink-soft);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding-top: var(--space-2xs);
}

/* ── buttons ──────────────────────────────────────────────── */
.btn {
  --btn-ink: var(--ink);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.7rem var(--space-m);
  border: var(--hair) solid var(--rule);
  color: var(--btn-ink);
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  overflow: hidden;
  transition: color var(--dur-mid) var(--ease-out),
              border-color var(--dur-mid) var(--ease-out);
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-mid) var(--ease-out);
  z-index: -1;
}

.btn:hover { border-color: var(--ink); }
.btn:hover::before { transform: scaleX(1); }
.btn:hover { color: var(--bg); }

.btn--primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn--primary::before { background: var(--signal); }
.btn--primary:hover { color: var(--bg); border-color: var(--signal); }

/* ── portrait ─────────────────────────────────────────────── */
.portrait { position: relative; }

.portrait__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: var(--bg-sunk);
  border: var(--hair) solid var(--rule);
}

.portrait__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08) brightness(0.98);
  transform: scale(1.04);
  transition: filter 1400ms var(--ease-out), transform 1600ms var(--ease-out);
}

/* duotone: the machine's view */
.portrait__duotone {
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, var(--signal) 0%, var(--graphite) 55%, var(--live) 100%);
  mix-blend-mode: var(--portrait-blend);
  opacity: var(--portrait-shade);
  transition: opacity 1400ms var(--ease-out);
  pointer-events: none;
}

/* sensor grid — stays after resolve, quietly */
.portrait__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, currentColor var(--hair), transparent var(--hair)),
    linear-gradient(to bottom, currentColor var(--hair), transparent var(--hair));
  background-size: 2.5rem 2.5rem;
  color: var(--vellum);
  opacity: var(--grid-alpha);
  pointer-events: none;
}

/* the scan sweep, driven once on load */
.portrait__scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 28%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    color-mix(in srgb, var(--signal-lift) 26%, transparent) 55%,
    color-mix(in srgb, var(--signal-lift) 85%, transparent) 96%,
    transparent 100%
  );
  opacity: 0;
  pointer-events: none;
}

.portrait__reg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: var(--signal-lift);
  stroke-width: 1.5;
  pointer-events: none;
}

.portrait__reg path { vector-effect: non-scaling-stroke; }

.portrait[data-resolved='true'] .portrait__img {
  filter: grayscale(0) contrast(1) brightness(1);
  transform: scale(1);
}

.portrait[data-resolved='true'] .portrait__duotone { opacity: 0; }

.portrait__caption {
  display: flex;
  justify-content: space-between;
  gap: var(--space-s);
  margin-top: var(--space-xs);
  color: var(--ink-faint);
}

.portrait__caption-mid { text-transform: none; letter-spacing: 0.06em; }

@media (max-width: 56.25rem) {
  .portrait__caption-mid { display: none; }
}

/* ── telemetry strip ──────────────────────────────────────── */
/* Dividers are per-cell borders rather than grid gaps showing a background
   colour. With an odd number of cells a gap-based rule paints any empty grid
   slot as a solid block; borders leave it blank. */
.telemetry {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: var(--space-2xl);
  border-block: var(--hair) solid var(--rule);
}

.telemetry__cell {
  padding: var(--space-m) var(--space-s);
  padding-left: var(--space-m);
  border-left: var(--hair) solid var(--rule);
}

.telemetry__cell:first-child { border-left: 0; padding-left: 0; }

.telemetry dt { color: var(--ink-faint); margin-bottom: var(--space-3xs); }

.telemetry dd {
  font-family: var(--font-display);
  font-weight: 600;
  font-variation-settings: 'wdth' 108;
  font-size: var(--step-1);
  letter-spacing: -0.015em;
  font-variant-numeric: tabular-nums;
}

/* ── scroll cue ───────────────────────────────────────────── */
.scroll-cue {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-l);
  color: var(--ink-faint);
}

.scroll-cue__line {
  flex: 1;
  max-width: 6rem;
  height: var(--hair);
  background: linear-gradient(to right, var(--ink-faint), transparent);
}

/* ── domains (chapter 02) ─────────────────────────────────── */
.domains {
  margin-top: var(--space-xl);
  border-top: var(--hair) solid var(--rule);
}

.domain {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr);
  gap: var(--space-s);
  padding-block: var(--space-l);
  border-bottom: var(--hair) solid var(--rule);
}

.domain__index { color: var(--signal); padding-top: 0.35rem; }

.domain__text { min-width: 0; }

.domain__title {
  font-size: var(--step-2);
  font-variation-settings: 'wdth' 106;
  margin-bottom: var(--space-2xs);
}

.domain__body { color: var(--ink-soft); max-width: var(--measure); }

/* ── pull quote ───────────────────────────────────────────── */
.pullquote {
  margin-block: var(--space-xl);
  padding-left: var(--space-l);
  border-left: 2px solid var(--signal);
  max-width: 34rem;
}

.pullquote p {
  font-family: var(--font-prose);
  font-size: var(--step-3);
  font-weight: 300;
  font-style: italic;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-wrap: balance;
}

/* ── timeline ─────────────────────────────────────────────── */
.timeline {
  position: relative;
  margin-top: var(--space-xl);
  padding-block: var(--space-s);
  /* Entrance motion offsets unseen cards horizontally. Keep that transform
     from enlarging the page's scrollable width at tablet breakpoints. */
  overflow-x: clip;
}

.timeline__spine {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: var(--hair);
  background: var(--rule);
  transform: translateX(-50%);
}

.timeline__spine-fill {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, var(--signal), var(--live));
  transform: scaleY(0);
  transform-origin: top;
}

.milestone {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: var(--space-2xl);
}

/* Opposite-side cards interlock slightly so the zigzag doesn't leave a
   column of dead space. The offset is small enough that same-side cards
   (two rows apart) still clear each other even if one grows. */
.milestone + .milestone { margin-top: calc(-1 * var(--space-xl)); }

.milestone[data-side='left'] .milestone__card  { grid-column: 1; justify-self: end; }
.milestone[data-side='right'] .milestone__card { grid-column: 2; justify-self: start; }

.milestone__node {
  position: absolute;
  left: 50%;
  top: 1.6rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--bg);
  border: var(--hair) solid var(--ink-faint);
  transform: translate(-50%, -50%) rotate(45deg);
  transition: background-color var(--dur-mid) var(--ease-out),
              border-color var(--dur-mid) var(--ease-out);
  z-index: 2;
}

.milestone.is-seen .milestone__node {
  background: var(--signal);
  border-color: var(--signal);
}

.milestone--now .milestone__node {
  width: 0.7rem;
  height: 0.7rem;
}

.milestone--now.is-seen .milestone__node {
  background: var(--live);
  border-color: var(--live);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--live) 18%, transparent);
}

.milestone__card {
  position: relative;
  width: 100%;
  max-width: 22rem;
  padding: var(--space-m);
  background: var(--bg-raised);
  border: var(--hair) solid var(--rule);
  border-radius: var(--radius);
  transition: border-color var(--dur-mid) var(--ease-out);
}

.milestone__card:hover { border-color: var(--ink-faint); }

/* hairline connector, reaching exactly half the column gap to meet the spine */
.milestone__card::after {
  content: '';
  position: absolute;
  top: 1.6rem;
  width: calc(var(--space-2xl) / 2);
  height: var(--hair);
  background: var(--rule);
}

.milestone[data-side='left'] .milestone__card::after  { left: 100%; }
.milestone[data-side='right'] .milestone__card::after { right: 100%; }

.milestone__year {
  color: var(--signal);
  margin-bottom: var(--space-2xs);
  font-variant-numeric: tabular-nums;
}

.milestone--now .milestone__year { color: var(--live); }

.milestone__title {
  font-size: var(--step-1);
  font-variation-settings: 'wdth' 104;
  margin-bottom: var(--space-3xs);
}

.milestone__org {
  font-family: var(--font-prose);
  font-size: var(--step--1);
  font-style: italic;
  color: var(--ink-faint);
  margin-bottom: var(--space-2xs);
}

.milestone__body {
  font-size: var(--step--1);
  line-height: 1.6;
  color: var(--ink-soft);
}

/* timeline → single rail on narrow screens */
@media (max-width: 56.25rem) {
  .timeline { padding-left: 1.5rem; }
  .timeline__spine { left: 0; transform: none; }
  .milestone { grid-template-columns: minmax(0, 1fr); }
  /* single rail: cards stack, so the interlock offset must not apply */
  .milestone + .milestone { margin-top: var(--space-m); }
  .milestone[data-side='left'] .milestone__card,
  .milestone[data-side='right'] .milestone__card {
    grid-column: 1;
    justify-self: start;
    max-width: 100%;
  }
  .milestone__node { left: 0; }
  .milestone__card::after { width: 1.5rem; }
  .milestone[data-side='left'] .milestone__card::after,
  .milestone[data-side='right'] .milestone__card::after { left: auto; right: 100%; }
}

/* ── contact ──────────────────────────────────────────────── */
.contact {
  margin-top: var(--space-xl);
  border-top: var(--hair) solid var(--rule);
}

.contact__row {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-s);
  padding-block: var(--space-s);
  border-bottom: var(--hair) solid var(--rule);
}

.contact__label { color: var(--ink-faint); }

.contact__link {
  font-family: var(--font-display);
  font-weight: 500;
  font-variation-settings: 'wdth' 104;
  font-size: var(--step-1);
  width: fit-content;
  background-image: linear-gradient(var(--signal), var(--signal));
  background-size: 0% var(--hair);
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size var(--dur-mid) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}

.contact__link:hover { color: var(--signal); background-size: 100% var(--hair); }

/* a row carrying more than one link; wrapped so the two-column grid still
   sees exactly two children and does not push the extra one onto a new row */
.contact__links {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-3xs) var(--space-m);
  min-width: 0;
}

/* ── responsive: hero stacks ──────────────────────────────── */
@media (max-width: 56.25rem) {
  .hero__grid { grid-template-columns: minmax(0, 1fr); }
  .portrait { max-width: 22rem; }
}

/* stack the strip before the cells get too narrow to read */
@media (max-width: 37.5rem) {
  .telemetry { grid-template-columns: minmax(0, 1fr); }
  .telemetry__cell {
    padding-left: 0;
    border-left: 0;
    border-top: var(--hair) solid var(--rule-soft);
  }
  .telemetry__cell:first-child { border-top: 0; }
}

@media (max-width: 30rem) {
  .contact__row { grid-template-columns: minmax(0, 1fr); gap: var(--space-3xs); }
  .domain { grid-template-columns: minmax(0, 1fr); gap: var(--space-2xs); }
}