/* ============ NAV ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--side-padding);
  backdrop-filter: blur(16px) saturate(160%);
  background: oklch(0.15 0.014 250 / 0.55);
  border-bottom: 1px solid var(--border);
  transition: transform var(--dur-md) var(--ease-out), opacity var(--dur-sm) var(--ease-out);
}

.nav--hidden {
  transform: translateY(-100%);
}

.nav__mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-label);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.nav__avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px var(--border-strong);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__links a {
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  transition: color var(--dur-sm) ease, opacity var(--dur-sm) var(--ease-out);
}

.nav__links a:hover {
  color: var(--text-primary);
}

.nav__icon {
  display: inline-flex;
  padding-left: var(--space-lg);
  border-left: 1px solid var(--border-strong);
}

.nav__icon svg {
  width: 1.15rem;
  height: 1.15rem;
}

.nav__links .nav__icon:hover {
  color: var(--accent);
}

/* The nav has no room left for a sixth link below this width */
@media (max-width: 960px) {
  .nav__links .nav__link--wide {
    display: none;
  }
}

@media (max-width: 640px) {
  .nav__links {
    gap: var(--space-md);
  }
  .nav__links a {
    font-size: var(--text-overline);
  }
  .nav__icon {
    padding-left: var(--space-md);
  }
}

@media (max-width: 480px) {
  .nav__links a:not(.nav__icon) {
    display: none;
  }
  .nav__icon {
    padding-left: 0;
    border-left: 0;
  }
}

/* ============ LOCALE TOGGLE ============ */
/* [EN] / FR: the accent brackets are the selection, and they travel to the locale you pick */
.locale-toggle {
  --cell: 44px;
  display: grid;
  grid-template-columns: var(--cell) 1ch var(--cell);
  align-items: center;
  /* 44px touch targets without growing the nav row */
  margin-block: -9px;
  padding-left: var(--space-xs);
  /* Drawn rather than a border: it must match .nav__icon's short rule, not span the 44px targets */
  background: linear-gradient(var(--border-strong), var(--border-strong)) left center / 1px 1.15rem no-repeat;
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.06em;
}

.locale-toggle__option {
  grid-row: 1;
  block-size: var(--cell);
  padding: 0;
  font: inherit;
  letter-spacing: inherit;
  color: var(--text-tertiary);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color var(--dur-sm) ease;
}

.locale-toggle__option[data-locale="en-US"] {
  grid-column: 1;
}

.locale-toggle__option[data-locale="fr-FR"] {
  grid-column: 3;
}

.locale-toggle__option:hover {
  color: var(--text-secondary);
}

.locale-toggle__option[aria-pressed="true"] {
  color: var(--text-primary);
  cursor: default;
}

.locale-toggle__option:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: -8px;
  border-radius: var(--radius-sm);
}

.locale-toggle__sep {
  grid-column: 2;
  grid-row: 1;
  text-align: center;
  color: var(--text-disabled);
}

.locale-toggle__brackets {
  grid-area: 1 / 1;
  justify-self: center;
  display: flex;
  justify-content: space-between;
  inline-size: 4.6ch;
  color: var(--accent);
  pointer-events: none;
  transition: transform var(--dur-md) var(--ease-out);
}

.locale-toggle__brackets::before {
  content: "[";
}

.locale-toggle__brackets::after {
  content: "]";
}

.locale-toggle:has([data-locale="fr-FR"][aria-pressed="true"]) .locale-toggle__brackets {
  transform: translateX(calc(var(--cell) + 1ch));
}

/* ============ PROGRESS BAR ============ */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 101;
  will-change: transform;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
}

.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 30%, transparent 75%);
  opacity: 0.6;
}

.hero__scanline {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, transparent, var(--accent-muted), transparent);
  height: 40%;
  animation: scan 9s var(--ease-in-out) infinite;
}

.hero__content {
  padding-block: var(--space-2xl);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  align-items: center;
  gap: var(--space-xl);
}

/* ---- Hero credential (portrait as a verified ID) ---- */
.credential {
  --pad: var(--space-sm);
  position: relative;
  padding: var(--pad);
  background: oklch(0.19 0.016 250 / 0.72);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: 0 30px 80px -30px oklch(0.08 0.02 250 / 0.9);
}

.credential__head,
.credential__data,
.credential__status {
  font-size: var(--text-overline);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.credential__head {
  display: flex;
  justify-content: space-between;
  color: var(--text-tertiary);
  padding-bottom: var(--pad);
}

.credential__frame {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--bg-inset);
}

.credential__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 20%;
  filter: brightness(0.78) contrast(1.1);
  -webkit-mask-image: radial-gradient(ellipse 85% 75% at 50% 45%, black 55%, oklch(0 0 0 / 0.55) 100%);
  mask-image: radial-gradient(ellipse 85% 75% at 50% 45%, black 55%, oklch(0 0 0 / 0.55) 100%);
}

/* Tinted monochrome: the `color` blend takes the overlay's hue/chroma, keeping the photo's luminance */
.credential__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: oklch(0.45 0.035 240);
  mix-blend-mode: color;
  transition: opacity var(--dur-lg) var(--ease-out);
}

/* Reticle corners */
.credential__frame::before {
  --c: var(--accent);
  --l: 18px;
  --w: 1.5px;
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(var(--c), var(--c)) top left / var(--l) var(--w),
    linear-gradient(var(--c), var(--c)) top left / var(--w) var(--l),
    linear-gradient(var(--c), var(--c)) top right / var(--l) var(--w),
    linear-gradient(var(--c), var(--c)) top right / var(--w) var(--l),
    linear-gradient(var(--c), var(--c)) bottom left / var(--l) var(--w),
    linear-gradient(var(--c), var(--c)) bottom left / var(--w) var(--l),
    linear-gradient(var(--c), var(--c)) bottom right / var(--l) var(--w),
    linear-gradient(var(--c), var(--c)) bottom right / var(--w) var(--l);
  background-repeat: no-repeat;
  opacity: 0.85;
}

.credential__beam {
  position: absolute;
  inset: 0 0 auto;
  z-index: 1;
  height: 30%;
  background: linear-gradient(180deg, transparent, var(--accent-muted) 70%, var(--accent) 100%);
  opacity: 0;
  transform: translateY(-100%);
}

.credential.is-visible .credential__beam {
  animation: credential-scan 1.6s var(--ease-in-out) 0.5s both;
}

.credential__data {
  display: grid;
  gap: 6px;
  padding-block: var(--pad);
  border-bottom: 1px dashed var(--border-strong);
}

.credential__data div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
}

.credential__data dt {
  color: var(--text-tertiary);
}

.credential__data dd {
  color: var(--text-secondary);
  text-transform: none;
  letter-spacing: 0.02em;
}

.credential__status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--pad);
}

.credential__verified {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  opacity: 0;
  transform: scale(0.85);
  transform-origin: left center;
}

.credential.is-visible .credential__verified {
  animation: credential-verified var(--dur-md) var(--ease-spring) 2s both;
}

.credential__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.credential__alg {
  color: var(--text-disabled);
}

@media (hover: hover) {
  .credential:hover .credential__frame::after {
    opacity: 0;
  }
}

@media (max-width: 900px) {
  .hero__content {
    grid-template-columns: 1fr;
    padding-bottom: var(--space-2xl);
  }

  .credential {
    display: grid;
    grid-template-columns: 96px 1fr;
    grid-template-areas:
      "head head"
      "frame data"
      "status status";
    column-gap: var(--space-sm);
    max-width: 420px;
  }

  .credential__head { grid-area: head; }
  .credential__frame { grid-area: frame; }
  .credential__data { grid-area: data; align-content: center; border-bottom: 0; }
  .credential__status { grid-area: status; border-top: 1px dashed var(--border-strong); }

  .credential__frame::before {
    --l: 10px;
    inset: 6px;
  }
}

.hero__title {
  font-size: var(--text-display);
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin-top: var(--space-md);
}

.line-mask {
  display: block;
  overflow: hidden;
}

.line-inner {
  display: block;
}

/* The name keeps getting rewritten with a Y: the claim is stamped over the real spelling, then fails to stick */
.glyph-id {
  position: relative;
  display: inline-block;
}

/* Out of flow, so the stamp can be wider than the I it covers without displacing a single letter */
.glyph-id__alt {
  position: absolute;
  top: 0;
  left: 50%;
  opacity: 0;
  color: transparent;
  -webkit-text-stroke: 0.04em var(--accent-2);
  user-select: none;
  transform: translateX(-50%);
}

.fonts-ready .glyph-id__alt {
  animation: glyph-id-alt 5.6s var(--ease-out) 1.2s infinite;
}

.hero__subhead {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: var(--space-lg);
  max-width: 22ch;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  margin-top: var(--space-lg);
  color: var(--text-tertiary);
  font-size: var(--text-body-sm);
}

.hero__meta li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--text-primary);
  transition: color var(--dur-md) ease, border-color var(--dur-md) ease;
}

.btn span {
  position: relative;
  z-index: 1;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-md) var(--ease-out);
  z-index: 0;
}

.btn:hover {
  color: var(--bg-primary);
  border-color: var(--accent);
}

.btn:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--side-padding);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 1px;
  height: 32px;
  background: var(--text-tertiary);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: "";
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--accent);
  animation: scroll-line 2s var(--ease-in-out) infinite;
}

@media (max-width: 900px) {
  .hero__scroll-hint {
    display: none;
  }
}

/* ============ STATS ============ */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.metric-card {
  background: var(--bg-surface);
  padding: var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.metric-card__number {
  display: block;
}

.metric-card__value {
  font-size: var(--text-h2);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.metric-card__suffix {
  font-size: var(--text-h2);
  color: var(--accent);
}

.metric-card__label {
  font-size: var(--text-body-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-2xs);
}

@media (max-width: 860px) {
  .stats {
    grid-template-columns: repeat(2, 1fr);
    margin-top: var(--space-lg);
  }
}

/* ============ IDENTITY PRIMER ============ */
.primer {
  position: relative;
  padding-block: var(--space-3xl) var(--space-2xl);
  background: var(--bg-inset);
  border-top: 1px solid var(--border);
  isolation: isolate;
}

.primer__grid-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, black, transparent 45%);
  mask-image: linear-gradient(180deg, black, transparent 45%);
  opacity: 0.4;
}

.primer__statement {
  font-family: var(--font-display);
  font-size: var(--text-h3);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  margin-top: var(--space-md);
  max-width: 52ch;
}

.primer__statement strong {
  font-weight: 400;
  color: var(--text-primary);
}

.primer__layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  grid-template-areas: "intro decoder" "chapters decoder";
  gap: var(--space-2xl);
  align-items: start;
}

.primer__intro {
  grid-area: intro;
}

.primer__chapters {
  grid-area: chapters;
  display: grid;
  gap: var(--space-3xl);
}

.primer__kicker {
  font-size: var(--text-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.primer__heading {
  font-size: var(--text-h2);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-top: var(--space-xs);
  margin-bottom: var(--space-md);
  max-width: 22ch;
}

.primer__sublabel {
  margin-top: var(--space-xl);
}

.primer__rows {
  margin-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.primer__rows > div {
  display: grid;
  grid-template-columns: 12ch 1fr;
  gap: var(--space-md);
  padding-block: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.primer__rows--grants > div {
  grid-template-columns: 15rem 1fr;
}

.primer__rows dt {
  font-size: var(--text-label);
  letter-spacing: 0.06em;
  color: var(--accent);
  padding-top: 0.2em;
}

.primer__rows:not(.primer__rows--grants) dt {
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.primer__rows dd {
  color: var(--text-secondary);
}

.primer__bridge {
  display: inline-block;
  margin-top: var(--space-3xl);
  font-family: var(--font-display);
  font-size: var(--text-h3);
  color: var(--text-secondary);
  transition: color var(--dur-sm) ease;
}

.primer__bridge:hover {
  color: var(--accent);
}

/* ---- Decoder: the hero credential, read segment by segment ---- */
.primer__decoder {
  grid-area: decoder;
  position: sticky;
  top: 120px;
  padding: var(--space-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  font-size: var(--text-overline);
}

.primer__jwt {
  word-break: break-all;
  line-height: 1.5;
  color: var(--text-disabled);
  padding-bottom: var(--space-sm);
  border-bottom: 1px dashed var(--border-strong);
}

.primer__seg {
  transition: color var(--dur-md) ease;
}

.primer__seg--payload {
  color: var(--accent);
}

.primer__seg--sig {
  color: var(--accent-2);
}

.primer__claims {
  display: grid;
  gap: 4px;
  padding-block: var(--space-sm);
  color: var(--text-secondary);
  white-space: pre;
}

.primer__claim {
  padding-left: 2ch;
  transition: opacity var(--dur-md) var(--ease-out), transform var(--dur-md) var(--ease-out), color var(--dur-md) ease;
  transition-delay: calc(var(--i, 0) * 60ms);
}

.primer__claim b {
  font-weight: 400;
  color: var(--text-tertiary);
}

.primer__brace {
  color: var(--text-tertiary);
}

.primer__status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-sm);
  border-top: 1px dashed var(--border-strong);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.primer__verified {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  transform-origin: left center;
  transition: opacity var(--dur-md) ease, transform var(--dur-md) var(--ease-spring);
}

/* Progressive decoding only once main.js drives it; without JS the token reads fully decoded */
.primer.is-live .primer__seg {
  color: var(--text-disabled);
}

.primer.is-live .primer__seg.is-current--header {
  color: var(--text-primary);
}

.primer.is-live .primer__seg.is-current--payload {
  color: var(--accent);
}

.primer.is-live .primer__seg.is-current--sig {
  color: var(--accent-2);
}

.primer.is-live .primer__claim {
  opacity: 0.15;
  transform: translateX(-6px);
}

.primer.is-live .primer__claim.is-decoded {
  opacity: 1;
  transform: none;
}

.primer.is-live .primer__claim.is-current {
  color: var(--accent-strong);
}

.primer.is-live .primer__verified {
  opacity: 0;
  transform: scale(0.85);
}

.primer.is-live .primer__verified.is-decoded {
  opacity: 1;
  transform: none;
}

@media (max-width: 900px) {
  .primer__layout {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "intro" "decoder" "chapters";
    gap: var(--space-xl);
  }

  /* A compact strip that stays in view: the chapters carry the content, the strip only shows which part is being read */
  .primer__decoder {
    top: var(--space-xs);
    z-index: 1;
    padding: var(--space-xs) var(--space-sm);
    background: oklch(0.19 0.016 250 / 0.85);
    backdrop-filter: blur(10px);
  }

  .primer__jwt {
    display: flex;
    white-space: nowrap;
    border-bottom: 0;
    padding-bottom: 0;
  }

  .primer__seg {
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1 1 0;
    min-width: 0;
  }

  .primer__seg--header {
    flex-grow: 0.6;
  }

  .primer__claims,
  .primer__status {
    display: none;
  }

  .primer__rows > div,
  .primer__rows--grants > div {
    grid-template-columns: 1fr;
    gap: var(--space-2xs);
  }
}

/* ============ ABOUT ============ */
.about {
  padding-block: var(--space-3xl);
  background: var(--bg-surface);
  border-block: 1px solid var(--border);
}

.about__grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about__label {
  position: sticky;
  top: 120px;
}

.about__body p + p {
  margin-top: var(--space-md);
}

@media (max-width: 780px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  .about__label {
    position: static;
  }
}

/* ============ BENTO / FOCUS ============ */
.section-full > .container + .bento {
  margin-top: var(--space-xl);
}

.bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.bento__card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-md);
  grid-column: span 2;
  transition: border-color var(--dur-md) ease, transform var(--dur-md) var(--ease-out), background var(--dur-md) ease;
}

.bento__card:hover {
  border-color: var(--border-strong);
  background: var(--bg-elevated);
  transform: translateY(-3px);
}

.bento__num {
  color: var(--accent);
  font-size: var(--text-body-sm);
}

.bento__card h3 {
  font-size: var(--text-h3);
  margin-top: var(--space-sm);
  letter-spacing: -0.01em;
}

.bento__card p {
  margin-top: var(--space-xs);
  color: var(--text-secondary);
  max-width: 48ch;
}

@media (max-width: 900px) {
  .bento {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento__card {
    grid-column: span 2;
  }
}

/* ============ AI PRACTICE ============ */
.ai-practice {
  padding-block: var(--space-3xl);
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, var(--accent-muted), transparent 60%),
    var(--bg-primary);
}

.ai-practice__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ai-practice__statement {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-top: var(--space-md);
  max-width: 22ch;
}

.ai-practice__body {
  margin-top: var(--space-lg);
  max-width: 60ch;
}

.ai-practice__pillars {
  list-style: none;
  padding: 0;
  margin-top: var(--space-2xl);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
}

.ai-practice__pillar {
  padding: var(--space-lg) var(--space-md) 0;
}

.ai-practice__pillar:first-child {
  padding-left: 0;
}

.ai-practice__pillar + .ai-practice__pillar {
  border-left: 1px solid var(--border);
}

.ai-practice__num {
  color: var(--accent);
  font-size: var(--text-body-sm);
}

.ai-practice__pillar h3 {
  font-size: var(--text-h3);
  margin-top: var(--space-sm);
  letter-spacing: -0.01em;
}

.ai-practice__pillar p {
  margin-top: var(--space-xs);
  color: var(--text-secondary);
  max-width: 32ch;
}

.ai-practice__coda {
  margin-top: var(--space-2xl);
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  color: var(--accent);
}

@media (max-width: 900px) {
  .ai-practice__pillars {
    grid-template-columns: 1fr;
    border-top: 0;
  }
  .ai-practice__pillar {
    border-top: 1px solid var(--border);
    padding: var(--space-md) 0;
  }
  .ai-practice__pillar + .ai-practice__pillar {
    border-left: 0;
  }
}

/* ============ STACK / MARQUEE ============ */
.stack {
  padding-block: var(--space-2xl);
  border-block: 1px solid var(--border);
  background: var(--bg-surface);
}

.marquee {
  margin-top: var(--space-lg);
  display: flex;
  overflow: hidden;
  user-select: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, black 8%, black 92%, transparent);
}

.marquee__track {
  display: flex;
  gap: var(--space-md);
  padding-inline: var(--space-md);
  flex-shrink: 0;
  animation: marquee 40s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.tag {
  flex-shrink: 0;
  padding: 0.6em 1.2em;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  background: var(--bg-elevated);
}

.stack__note {
  margin-top: var(--space-lg);
  color: var(--text-tertiary);
  font-size: var(--text-body-sm);
}

/* ============ CONTACT ============ */
.contact {
  padding-block: var(--space-3xl);
  background: var(--bg-inset);
  border-top: 1px solid var(--border);
}

.contact__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact__title {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-top: var(--space-md);
}

.contact__email {
  display: inline-block;
  margin-top: var(--space-xl);
  font-size: var(--text-h3);
  color: var(--accent-strong);
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.15em;
  transition: opacity var(--dur-sm) ease;
}

.contact__email:hover {
  opacity: 0.8;
}

.contact__meta {
  margin-top: var(--space-lg);
  color: var(--text-tertiary);
  font-size: var(--text-body-sm);
  line-height: 1.7;
}

/* ============ EXPERIENCE / TIMELINE ============ */
.experience {
  background: var(--bg-surface);
  border-block: 1px solid var(--border);
}

.timeline {
  margin-top: var(--space-xl);
}

.xp {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-lg);
}

.xp__period {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  padding-top: 2px;
}

.xp__years {
  font-size: var(--text-body-sm);
  color: var(--text-primary);
}

.xp__duration {
  font-size: var(--text-overline);
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

.xp__body {
  position: relative;
  border-left: 1px solid var(--border);
  padding-left: var(--space-lg);
  padding-bottom: var(--space-2xl);
}

.xp:last-child .xp__body {
  padding-bottom: 0;
}

.xp__body::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border-strong);
  box-shadow: 0 0 0 4px var(--bg-surface);
  transition: background var(--dur-md) ease;
}

.xp--current .xp__body {
  border-left-color: var(--accent-muted);
}

.xp--current .xp__body::before {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg-surface), 0 0 12px var(--accent);
}

.xp:hover .xp__body::before {
  background: var(--accent);
}

.xp__role {
  font-size: var(--text-h3);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.xp__company {
  margin-top: var(--space-2xs);
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--accent-strong);
}

.xp__place {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text-tertiary);
  font-size: var(--text-body-sm);
}

.xp__company .xp__place::before {
  content: "· ";
  color: var(--text-disabled);
}

.xp__summary {
  margin-top: var(--space-sm);
  color: var(--text-secondary);
  max-width: 60ch;
}

.xp__points {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.xp__points li {
  position: relative;
  padding-left: var(--space-md);
  color: var(--text-secondary);
  font-size: var(--text-body-sm);
  max-width: 62ch;
}

.xp__points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.xp__tags {
  margin-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.xp__tags li {
  padding: 0.35em 0.75em;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: var(--text-overline);
  color: var(--text-tertiary);
  background: var(--bg-elevated);
}

@media (max-width: 720px) {
  .xp {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  .xp__period {
    flex-direction: row;
    align-items: baseline;
    gap: var(--space-sm);
    padding-left: var(--space-lg);
  }
  .xp__body {
    border-left: none;
    padding-left: var(--space-lg);
  }
  .xp__body::before {
    left: 0;
  }
  .xp__body,
  .xp__period {
    position: relative;
  }
  .xp {
    border-left: 1px solid var(--border);
  }
  .xp--current {
    border-left-color: var(--accent-muted);
  }
  .xp:last-child {
    border-left-color: transparent;
  }
}

/* ============ CREDENTIALS (education & certifications) ============ */
.credentials {
  padding-block: var(--space-3xl);
}

.credentials__grid {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.credentials__col-title {
  font-size: var(--text-body-sm);
  color: var(--accent);
  letter-spacing: 0.06em;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.credentials__list {
  display: flex;
  flex-direction: column;
}

.cred {
  display: flex;
  gap: var(--space-md);
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.cred__meta {
  flex-shrink: 0;
  width: 92px;
  font-size: var(--text-body-sm);
  color: var(--text-tertiary);
  padding-top: 0.2em;
}

.cred__badge {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  color: var(--accent);
}

.cred__badge svg {
  width: 22px;
  height: 22px;
}

.cred__title {
  font-size: var(--text-h3);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.cred__sub {
  margin-top: var(--space-2xs);
  color: var(--text-secondary);
  font-size: var(--text-body-sm);
}

.cred__org {
  margin-top: var(--space-2xs);
  color: var(--text-tertiary);
  font-size: var(--text-body-sm);
}

@media (max-width: 780px) {
  .credentials__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .cred {
    flex-direction: column;
    gap: var(--space-xs);
  }
  .cred__meta {
    width: auto;
  }
}

/* ============ FOOTER ============ */
.footer {
  padding-block: var(--space-lg);
  background: var(--bg-inset);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-tertiary);
  font-size: var(--text-body-sm);
}

/* ============ INTROSPECT TRIGGERS ============ */
/* Any element carrying data-introspect. JS strips the ones with no matching <template>. */

/* Inline entities read as tokens, not as text: the shape is the affordance, not the colour */
.entity {
  position: relative;
  display: inline-block;
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
  cursor: pointer;
  border: 0;
  /* the chip eats most of its own padding back, so it barely shifts the line
     while still leaving the adjacent punctuation outside its edge */
  margin-inline: -0.1em;
  padding: 0.08em 0.28em;
  border-radius: 3px;
  background: var(--accent-muted);
  box-shadow: inset 0 -1px 0 0 oklch(0.80 0.15 195 / 0.55);
  transition: background var(--dur-sm) ease, color var(--dur-sm) ease, box-shadow var(--dur-sm) ease;
}

/* Arrival flash: a scan pass over the token, opacity and transform only */
.entity::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 5px;
  background: var(--accent);
  opacity: 0;
  pointer-events: none;
}

/* Hover sweep, left to right */
.entity::after {
  content: "";
  position: absolute;
  left: 1px;
  right: 1px;
  bottom: 0;
  height: 1px;
  background: var(--accent-strong);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-md) var(--ease-out);
}

.entity:hover,
.entity:focus-visible {
  color: var(--text-primary);
  background: var(--accent-active);
  box-shadow: inset 0 -1px 0 0 var(--accent-strong);
}

.entity:hover::after,
.entity:focus-visible::after {
  transform: scaleX(1);
}

.entity:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 3px;
}

.entity.is-lit::before {
  animation: entity-lit 1s var(--ease-out) calc(400ms + var(--s, 0) * 90ms) both;
}

/* Pills: the accent border marks them at rest, even while the marquee is moving */
.tag.entity {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  margin-inline: 0;
  padding: 0.6em 1.2em;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent-muted);
  color: var(--text-primary);
  box-shadow: none;
  transition: color var(--dur-sm) ease, border-color var(--dur-sm) ease, background var(--dur-sm) ease;
}

.tag.entity::after {
  content: none;
}

.tag.entity::before {
  content: "";
  position: static;
  inset: auto;
  width: 5px;
  height: 5px;
  margin-right: 0.7em;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.8;
  transition: opacity var(--dur-sm) ease, box-shadow var(--dur-sm) ease;
}

.tag.entity:hover,
.tag.entity:focus-visible {
  color: var(--text-primary);
  border-color: var(--accent-strong);
  background: var(--accent-active);
  box-shadow: none;
}

.tag.entity:hover::before,
.tag.entity:focus-visible::before {
  opacity: 1;
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.tag.entity.is-lit::before {
  animation: tag-lit 1s var(--ease-out) calc(400ms + var(--s, 0) * 90ms) both;
}

/* Bento cards: the whole surface is the target, the [+] is the sign */
.bento__card {
  position: relative;
}

.card-trigger {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  border-radius: inherit;
}

.card-trigger::before {
  content: "+";
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: var(--text-body-sm);
  line-height: 1;
  color: var(--accent);
  background: var(--accent-muted);
  border-color: oklch(0.80 0.15 195 / 0.45);
  transition: color var(--dur-sm) ease, border-color var(--dur-sm) ease, background var(--dur-sm) ease, transform var(--dur-md) var(--ease-spring);
}

.bento__card:hover .card-trigger::before,
.card-trigger:focus-visible::before {
  color: var(--bg-primary);
  background: var(--accent);
  border-color: var(--accent);
  transform: rotate(90deg);
}

.card-trigger.is-lit::before {
  animation: card-lit 1s var(--ease-out) calc(400ms + var(--s, 0) * 90ms) both;
}

.card-trigger:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

/* ============ INTROSPECT DIALOG ============ */
.introspect {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: visible;
  color: var(--text-primary);
}

.introspect[open] {
  display: grid;
  place-items: center;
  padding: var(--space-lg) var(--side-padding);
}

.introspect::backdrop {
  background:
    radial-gradient(ellipse 70% 60% at 50% 40%, oklch(0.15 0.014 250 / 0.55), oklch(0.09 0.012 250 / 0.92));
  opacity: 0;
  transition: opacity var(--dur-md) var(--ease-out), backdrop-filter var(--dur-md) var(--ease-out);
}

.introspect.is-open::backdrop {
  opacity: 1;
  backdrop-filter: blur(10px) saturate(120%);
}

.introspect__panel {
  position: relative;
  outline: none;
  isolation: isolate;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  width: min(760px, 100%);
  max-height: min(86svh, 800px);
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow:
    0 40px 120px -24px oklch(0.06 0.01 250 / 0.9),
    0 0 100px -50px var(--accent);
  opacity: 0;
  transform: scale(0.94);
  transition: opacity var(--dur-md) var(--ease-out), transform var(--dur-lg) var(--ease-out);
  will-change: transform;
}

.introspect.is-open .introspect__panel {
  opacity: 1;
  transform: none;
}

.introspect__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 70% 0%, black, transparent 70%);
  mask-image: radial-gradient(ellipse 90% 70% at 70% 0%, black, transparent 70%);
  opacity: 0.7;
}

.introspect__panel::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: var(--space-xl);
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(to top, var(--bg-surface), transparent);
}

.introspect__beam {
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 22%;
  z-index: 2;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(180deg, transparent, var(--accent-muted) 55%, var(--accent) 94%, transparent);
  mix-blend-mode: screen;
}

.introspect.is-open .introspect__beam {
  animation: introspect-beam 900ms var(--ease-in-out) 140ms both;
}

.introspect__head {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border);
  background: var(--bg-inset);
  font-size: var(--text-overline);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.introspect__status {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  color: var(--accent);
}

.introspect__status::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px var(--accent-muted);
}

.introspect__route {
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.introspect__close {
  margin-left: auto;
  flex-shrink: 0;
  font: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  color: var(--text-tertiary);
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.35em 0.7em;
  cursor: pointer;
  transition: color var(--dur-sm) ease, border-color var(--dur-sm) ease;
}

.introspect__close:hover,
.introspect__close:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.introspect__close:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

.introspect__body {
  padding: var(--space-lg) var(--space-lg) var(--space-xl);
  overflow-y: auto;
  overscroll-behavior: contain;
  color: var(--text-secondary);
}

/* Decode sweep: each block wipes in left-to-right, staggered behind the beam */
.introspect__body > * {
  opacity: 0;
  transform: translateY(12px);
  clip-path: inset(0 100% 0 0);
  transition:
    opacity var(--dur-md) var(--ease-out),
    transform var(--dur-lg) var(--ease-out),
    clip-path var(--dur-lg) var(--ease-out);
  transition-delay: calc(var(--i, 0) * 70ms + 200ms);
}

.introspect.is-open .introspect__body > * {
  opacity: 1;
  transform: none;
  clip-path: inset(0);
}

/* ---- Introspect content ---- */
.introspect__kicker {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.introspect__title {
  margin-top: var(--space-xs);
  font-size: var(--text-h2);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.introspect__lede {
  margin-top: var(--space-md);
  font-size: var(--text-body-lg);
  line-height: 1.6;
}

.introspect__body p {
  max-width: 62ch;
}

.introspect__body > * + p {
  margin-top: var(--space-md);
}

.introspect__body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.introspect__claims {
  margin-top: var(--space-lg);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.introspect__claims > div {
  background: var(--bg-inset);
  padding: var(--space-sm) var(--space-md);
}

.introspect__claims dt {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
}

.introspect__claims dd {
  margin: 2px 0 0;
  font-size: var(--text-body-sm);
  color: var(--text-primary);
}

.introspect__block {
  margin-top: var(--space-lg);
  padding-left: var(--space-md);
  border-left: 2px solid var(--accent);
}

.introspect__block-title {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.introspect__block p {
  margin-top: var(--space-xs);
}

.introspect__list {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.introspect__list li {
  position: relative;
  padding-left: var(--space-md);
  font-size: var(--text-body-sm);
  color: var(--text-secondary);
  max-width: 62ch;
}

.introspect__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.introspect__foot {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
}

.introspect__sig {
  font-family: var(--font-mono);
  font-size: var(--text-overline);
  letter-spacing: 0.08em;
  color: var(--text-disabled);
}

@media (max-width: 600px) {
  .introspect[open] {
    place-items: end center;
    padding: 0;
  }
  .introspect__panel {
    width: 100%;
    max-height: 90svh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: 0;
  }
  .introspect__body {
    padding: var(--space-md) var(--space-md) var(--space-xl);
  }
}