* {
  box-sizing: border-box;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

html,
body {
  min-height: 100%;
  background: var(--color-bg-base);
  color: var(--color-fg);
  font-family: var(--font-body);
  line-height: 1.55;
}

a {
  color: var(--color-brand-mint);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration: underline;
}

a:visited {
  color: var(--color-brand-mint);
}

:focus-visible {
  outline: 2px solid var(--color-brand-mint);
  outline-offset: 3px;
}

/* Programmatic FocusOnNavigate / skip-link target — not a control. */
#main:focus,
#main:focus-visible {
  outline: none;
}

.boot {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--color-bg-base);
}

.boot__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--color-fg-emphasis);
  letter-spacing: -0.015em;
  opacity: 0.85;
}

#blazor-error-ui {
  display: none;
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  padding: 0.75rem 1rem;
  background: var(--color-bg-mid);
  border-top: 1px solid color-mix(in srgb, var(--color-brand-coral) 40%, transparent);
  color: var(--color-fg);
  z-index: 1000;
}

#blazor-error-ui .reload {
  margin-inline-start: 0.75rem;
}

.skip-link {
  position: absolute;
  inset-inline-start: 1rem;
  top: -3rem;
  z-index: 50;
  padding: 0.5rem 0.75rem;
  background: var(--color-brand-mint);
  color: var(--color-bg-deep);
  border-radius: 8px;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem 1.5rem;
  background: color-mix(in srgb, var(--color-bg-base) 72%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background 200ms ease, border-color 200ms ease;
}

.site-header.is-solid {
  background: var(--color-bg-base);
  border-bottom-color: color-mix(in srgb, var(--color-grid-line) 18%, transparent);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--color-fg-emphasis);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

/* Beat global a:visited mint — wordmark stays fg-emphasis. */
.site-header__brand:link,
.site-header__brand:visited {
  color: var(--color-fg-emphasis);
}

.site-header__brand:hover {
  text-decoration: none;
}

.site-header__mark {
  width: auto;
  height: 38px;
  display: block;
}

.site-header__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.15rem;
}

.site-header__nav a:link,
.site-header__nav a:visited {
  color: var(--color-fg);
  text-decoration: none;
  font-size: 1rem;
}

.site-header__nav a:hover,
.site-header__nav a:visited:hover {
  color: var(--color-fg-emphasis);
  text-decoration: underline;
}

.site-header__controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Language switcher: progressive <details> + <a> — works before WASM hydrate. */
.lang-switch {
  position: relative;
}

.lang-switch__summary {
  list-style: none;
  cursor: pointer;
  height: 32px;
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--color-brand-ink) 18%, transparent);
  background: color-mix(in srgb, var(--color-bg-haze) 80%, transparent);
  color: var(--color-fg);
  padding: 0 0.65rem;
  font: inherit;
  font-size: 0.875rem;
  line-height: 1;
  max-width: 11.5rem;
}

.lang-switch__summary::-webkit-details-marker {
  display: none;
}

.lang-switch__summary:hover,
.lang-switch__summary:focus-visible {
  border-color: color-mix(in srgb, var(--color-brand-mint) 40%, transparent);
}

.lang-switch__list {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 0.35rem);
  z-index: 50;
  margin: 0;
  padding: 0.35rem;
  list-style: none;
  min-width: 100%;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--color-brand-ink) 18%, transparent);
  background: var(--color-bg-base);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--color-bg-deep) 45%, transparent);
}

.lang-switch__item {
  display: block;
  width: 100%;
  padding: 0.4rem 0.55rem;
  border-radius: 6px;
  color: var(--color-fg);
  text-decoration: none;
  font-size: 0.875rem;
  white-space: nowrap;
  text-align: start;
  box-sizing: border-box;
}

/* Beat global a:visited mint — locale list must be uniform. */
a.lang-switch__item:link,
a.lang-switch__item:visited {
  color: var(--color-fg);
  text-decoration: none;
}

button.lang-switch__item {
  appearance: none;
  margin: 0;
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

a.lang-switch__item:hover,
a.lang-switch__item:visited:hover,
button.lang-switch__item:hover {
  color: var(--color-fg-emphasis);
  background: color-mix(in srgb, var(--color-brand-mint) 10%, transparent);
  text-decoration: none;
}

.lang-switch__item.is-current {
  color: var(--color-fg-emphasis);
  font-weight: 600;
}

.theme-toggle {
  appearance: none;
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--color-brand-ink) 14%, transparent);
  background: transparent;
  color: var(--color-fg-muted);
  cursor: pointer;
}

.theme-toggle:hover:not(:disabled) {
  color: var(--color-fg-emphasis);
  border-color: color-mix(in srgb, var(--color-brand-mint) 35%, transparent);
  background: color-mix(in srgb, var(--color-brand-mint) 8%, transparent);
}

.theme-toggle__icon {
  width: 15px;
  height: 15px;
  display: block;
}

/*
 * pending-hydrate — fifth control state (design system § interaction states).
 * Distinct from disabled: soft mint pulse while WASM interactive runtime loads.
 * Respect prefers-reduced-motion: static muted + no sweep.
 */
.control--pending-hydrate {
  position: relative;
  cursor: wait;
  color: var(--color-fg-muted);
  border-color: color-mix(in srgb, var(--color-brand-mint) 28%, transparent);
  animation: pending-hydrate-pulse 1.4s ease-in-out infinite;
}

.control--pending-hydrate::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(
    105deg,
    transparent 35%,
    color-mix(in srgb, var(--color-brand-mint) 22%, transparent) 50%,
    transparent 65%
  );
  background-size: 220% 100%;
  animation: pending-hydrate-sweep 1.5s linear infinite;
}

@keyframes pending-hydrate-pulse {
  0%,
  100% {
    opacity: 0.72;
  }
  50% {
    opacity: 1;
  }
}

@keyframes pending-hydrate-sweep {
  0% {
    background-position: 120% 0;
  }
  100% {
    background-position: -120% 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .control--pending-hydrate {
    animation: none;
    opacity: 0.7;
  }

  .control--pending-hydrate::after {
    animation: none;
    background: none;
  }
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 5.5rem 1.5rem 4rem;
  overflow: hidden;
  background-color: var(--color-bg-base);
}

/*
 * Themed assets: both dark + light in DOM; visibility follows html[data-theme]
 * (set by App.razor inline script before paint — no ThemeService wait).
 */
.themed-asset {
  display: contents;
}

.themed-asset__light {
  display: none !important;
}

html[data-theme="light"] .themed-asset__dark {
  display: none !important;
}

html[data-theme="light"] img.themed-asset__light {
  display: block !important;
}

/* Inline logos in flex headers */
html[data-theme="light"] img.themed-asset__light.site-header__mark,
html[data-theme="light"] img.themed-asset__light.brand__mark {
  display: block !important;
}

html[data-theme="light"] picture.themed-asset__light {
  display: block !important;
}

.hero__terrain {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__terrain svg,
.hero__terrain-svg,
.hero__terrain-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 48rem;
  text-align: center;
}

/* Enter motion only on prerender/SSR — skip on interactive remount (avoids opacity-0 flash). */
.hero__inner--enter {
  animation: hero-enter 650ms ease-out both;
}

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35em;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--color-fg-emphasis);
  text-shadow: 0 2px 28px color-mix(in srgb, var(--color-bg-vignette) 55%, transparent);
}

.brand__mark {
  display: block;
  height: 2.1em;
  width: auto;
  flex-shrink: 0;
}

.brand__name {
  line-height: 1;
}

.hero__headline {
  margin-top: 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  letter-spacing: -0.02em;
  color: var(--color-fg-heading);
  line-height: 1.25;
}

.hero__supporting {
  margin-top: 0.85rem;
  color: var(--color-fg-muted);
  font-size: 1.05rem;
  max-width: 36rem;
  margin-inline: auto;
}

.status-chip {
  display: inline-flex;
  margin-top: 1.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 8px;
  background: var(--color-bg-haze);
  border: 1px solid color-mix(in srgb, var(--color-brand-ink) 18%, transparent);
  color: var(--color-fg-muted);
  font-size: 0.875rem;
}

.page-main {
  background: var(--color-bg-base);
}

.section {
  padding: 4.5rem 1.5rem;
}

.section--compact {
  padding-block: 3rem;
}

.section__inner {
  max-width: 72rem;
  margin: 0 auto;
}

.section__inner--narrow {
  max-width: 40rem;
}

.split {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 960px) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .split--reverse .split__copy {
    order: 2;
  }

  .split--reverse .split__media {
    order: 1;
  }

  .split--sticky .split__media {
    position: sticky;
    top: 6rem;
    align-self: start;
  }
}

.split__copy {
  max-width: 40rem;
}

.section__title {
  font-family: var(--font-body);
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--color-fg-heading);
  margin-bottom: 0.75rem;
}

.section__body {
  color: var(--color-fg-muted);
}

.section__body p + p {
  margin-top: 0.85rem;
}

.split__media img,
.illu {
  display: block;
  width: 100%;
  height: auto;
}

.illu--tip.is-revealed {
  animation: mascot-tip 180ms ease-out;
}

@keyframes mascot-tip {
  0% {
    transform: rotate(0deg);
  }
  40% {
    transform: rotate(-2deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 550ms ease, transform 550ms ease;
}

.reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal__stagger > *:nth-child(1) {
  transition-delay: 0ms;
}

.reveal__stagger > *:nth-child(2) {
  transition-delay: 90ms;
}

.reveal__stagger > *:nth-child(3) {
  transition-delay: 160ms;
}

.live-preview {
  border: 1px dashed color-mix(in srgb, var(--color-grid-line) 35%, transparent);
  border-radius: 10px;
  padding: 2rem 1.25rem;
  background: color-mix(in srgb, var(--color-bg-mid) 65%, transparent);
}

.live-preview__demo {
  margin-top: 1.5rem;
}

/* Stream-row joke: asset stuck oscillating in uncertainty (SVG + CSS, no GIF). */
.uncertain-row {
  display: grid;
  grid-template-columns: minmax(4.5rem, auto) 1fr auto minmax(4.5rem, 7rem);
  align-items: center;
  gap: 0.85rem 1rem;
  padding: 0.85rem 1rem;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--color-brand-ink) 12%, transparent);
  background: color-mix(in srgb, var(--color-bg-deep) 55%, transparent);
  font-variant-numeric: tabular-nums;
}

.uncertain-row__meta {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 0;
}

.uncertain-row__ticker {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--color-fg-emphasis);
}

.uncertain-row__label {
  font-size: 0.7rem;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  color: var(--color-fg-muted);
}

.uncertain-row__spark {
  width: 100%;
  max-width: 11rem;
  height: 2.25rem;
  color: var(--color-brand-mint);
  justify-self: stretch;
}

.uncertain-row__spark-line {
  transform-origin: 60px 18px;
  animation: uncertain-spark 2.8s ease-in-out infinite;
}

.uncertain-row__readout {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-width: 4.5rem;
  justify-content: flex-end;
}

.uncertain-row__arrow {
  display: inline-grid;
  place-items: center;
  color: var(--color-brand-mint);
  animation: uncertain-arrow 2.8s ease-in-out infinite;
}

.uncertain-row__score {
  position: relative;
  display: inline-block;
  width: 2.75rem;
  height: 1.15em;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-fg-emphasis);
}

.uncertain-row__score-a,
.uncertain-row__score-b {
  position: absolute;
  inset-inline-start: 0;
  top: 0;
}

.uncertain-row__score-a {
  animation: uncertain-score-a 2.8s ease-in-out infinite;
}

.uncertain-row__score-b {
  animation: uncertain-score-b 2.8s ease-in-out infinite;
}

.uncertain-row__confidence {
  height: 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-brand-ink) 12%, transparent);
  overflow: hidden;
}

.uncertain-row__confidence-fill {
  height: 100%;
  width: 48%;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--color-brand-coral) 70%, transparent),
    var(--color-brand-mint)
  );
  transform-origin: left center;
  animation: uncertain-bar 2.8s ease-in-out infinite;
}

@keyframes uncertain-spark {
  0%,
  100% {
    transform: translateY(3px) scaleY(0.92);
    color: var(--color-brand-coral);
  }
  50% {
    transform: translateY(-3px) scaleY(1.05);
    color: var(--color-brand-mint);
  }
}

@keyframes uncertain-arrow {
  0%,
  100% {
    transform: rotate(180deg);
    color: var(--color-brand-coral);
  }
  50% {
    transform: rotate(0deg);
    color: var(--color-brand-mint);
  }
}

@keyframes uncertain-score-a {
  0%,
  100% {
    opacity: 1;
  }
  45%,
  55% {
    opacity: 0;
  }
}

@keyframes uncertain-score-b {
  0%,
  100% {
    opacity: 0;
  }
  45%,
  55% {
    opacity: 1;
  }
}

@keyframes uncertain-bar {
  0%,
  100% {
    transform: scaleX(0.72);
    opacity: 0.75;
  }
  50% {
    transform: scaleX(1.05);
    opacity: 1;
  }
}

@media (max-width: 640px) {
  .uncertain-row {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "meta readout"
      "spark spark"
      "conf conf";
  }

  .uncertain-row__meta {
    grid-area: meta;
  }

  .uncertain-row__spark {
    grid-area: spark;
    max-width: none;
  }

  .uncertain-row__readout {
    grid-area: readout;
  }

  .uncertain-row__confidence {
    grid-area: conf;
  }
}

@media (prefers-reduced-motion: reduce) {
  .uncertain-row__spark-line,
  .uncertain-row__arrow,
  .uncertain-row__score-a,
  .uncertain-row__score-b,
  .uncertain-row__confidence-fill {
    animation: none;
  }

  .uncertain-row__spark-line {
    color: var(--color-fg-muted);
    transform: none;
  }

  .uncertain-row__arrow {
    transform: rotate(90deg);
    color: var(--color-fg-muted);
  }

  .uncertain-row__score-a {
    opacity: 1;
  }

  .uncertain-row__score-b {
    opacity: 0;
  }

  .uncertain-row__confidence-fill {
    transform: scaleX(0.88);
    opacity: 0.85;
  }
}

.ai-streams__media {
  position: relative;
  overflow: hidden;
}

.ai-streams__media.is-revealed::after {
  content: "";
  position: absolute;
  inset-inline-end: 12%;
  top: 28%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-brand-mint);
  animation: confidence-beat 700ms ease-out 1;
}

@keyframes confidence-beat {
  0% {
    transform: scale(0.6);
    opacity: 0.2;
  }
  40% {
    transform: scale(1.25);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
}

[data-scrub-media] {
  --scrub: 0;
  filter: saturate(calc(0.85 + (var(--scrub) * 0.2)));
  transform: translateY(calc(var(--scrub) * -8px));
  transition: filter 80ms linear;
}

.status-block {
  display: grid;
  gap: 1.25rem;
  align-items: center;
}

@media (min-width: 640px) {
  .status-block {
    grid-template-columns: 120px 1fr;
  }
}

.status-block__mark {
  width: 120px;
  height: auto;
  justify-self: center;
}

.page-hero {
  padding: 7rem 1.5rem 2.5rem;
}

.page-hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-fg-emphasis);
  max-width: 40rem;
}

.page-hero__media {
  margin-top: 2rem;
  max-width: 72rem;
}

.legal {
  padding: 7rem 1.5rem 4rem;
}

.legal__inner {
  max-width: 40rem;
  margin: 0 auto;
}

.legal__title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-fg-emphasis);
  margin-bottom: 1.25rem;
}

.legal__body {
  color: var(--color-fg-muted);
}

.legal__body p + p {
  margin-top: 1rem;
}

.site-footer {
  padding: 3rem 1.5rem 4rem;
  border-top: 1px solid color-mix(in srgb, var(--color-grid-line) 16%, transparent);
  background: var(--color-bg-base);
}

.site-footer__inner {
  max-width: 72rem;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.site-footer__brand {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-fg-emphasis);
}

.site-footer__risk {
  color: var(--color-fg-muted);
  font-size: 0.875rem;
  max-width: 40rem;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__links a:link,
.site-footer__links a:visited {
  color: var(--color-fg);
  text-decoration: none;
}

.site-footer__links a:hover,
.site-footer__links a:visited:hover {
  color: var(--color-brand-mint);
  text-decoration: underline;
}

.site-footer__copy {
  margin: 0.5rem 0 0;
  color: var(--color-fg-muted);
  font-size: 0.875rem;
}