/**
 * AI Skunkworks — index page
 */

/* ——— Hero ——— */
.index-hero h1.index-hero__title {
  font-family: var(--sans);
  font-size: clamp(52px, 9.5vw, 136px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin: 0;
}

.index-hero__tagline {
  max-width: 34ch;
  margin: var(--space-md) 0 0;
  font-size: clamp(1.375rem, 2.4vw, 1.875rem);
  font-weight: 500;
  line-height: 1.3;
  color: var(--ink);
}

.index-hero__about {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--line);
}

.index-hero__about-title {
  font-family: var(--sans);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 var(--space-xs);
  padding-left: var(--space-xs);
  border-left: 3px solid var(--accent);
  line-height: 1.2;
}

.index-hero__about-col p,
.index-hero__do {
  max-width: 62ch;
  margin: 0;
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--ink-dim);
}

.index-hero__do {
  padding-left: 1.1em;
}

.index-hero__do li + li {
  margin-top: var(--space-2xs);
}

.index-hero__do li::marker {
  color: var(--accent);
}

@media (max-width: 52rem) {
  .index-hero__about {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

.index-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 40px;
}

/* ——— Premise / section grid ——— */
.index-hero + .page-section,
.page-section {
  padding: 100px 0;
  margin-bottom: 0;
  border-top: 1px solid var(--line);
}

.page-section__grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 60px;
}

.page-section__kicker {
  position: sticky;
  top: calc(var(--classification-banner-h) + 80px);
  align-self: start;
}

.page-section__kicker .page-section__label {
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  margin-bottom: var(--space-2xs);
}

.page-section__kicker-sub {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.page-section__head {
  margin-bottom: var(--space-lg);
}

.page-section__head h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--type-h2-section);
}

.premise__para {
  margin: 0 0 1.25rem;
  font-family: var(--serif);
  font-weight: 300;
  font-size: var(--type-pullprose);
  line-height: 1.35;
  color: var(--ink);
}

.premise__para:last-child {
  margin-bottom: 0;
}

.premise__para em {
  font-style: italic;
  color: var(--accent);
}

/* ——— Operational layers ——— */
.layers__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.layer-card {
  display: flex;
  flex-direction: column;
  padding: 32px;
  background: var(--paper);
}

.layer-card__label {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
}

.layer-card__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--type-h3-card);
  line-height: 1.1;
  color: var(--ink);
}

.layer-card__sub {
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.layer-card__body {
  margin: 0;
  font-size: var(--type-body);
  line-height: 1.65;
  color: var(--ink-dim);
}

/* ——— Ops grid (divisions preview) ——— */
.ops-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.ops-grid__item {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  padding: 32px;
  background: var(--paper);
}

.ops-grid__item--span-5 {
  grid-column: span 5;
}

.ops-grid__item--span-6 {
  grid-column: span 6;
}

.ops-grid__item--span-7 {
  grid-column: span 7;
}

.ops-grid__item--featured::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 360px;
  height: 360px;
  border: 1px dashed var(--accent);
  border-radius: 50%;
  opacity: 0.5;
  pointer-events: none;
  animation: ops-featured-rotate 30s linear infinite;
}

@keyframes ops-featured-rotate {
  to {
    transform: rotate(360deg);
  }
}

.ops-grid__head {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: 24px;
}

.ops-grid__id {
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  color: var(--ink-faint);
}

.ops-grid__tag {
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.ops-grid__tag::first-letter {
  color: var(--accent);
}

.ops-grid__title {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--type-h3-card);
  line-height: 1.1;
  color: var(--ink);
}

.ops-grid__body {
  margin: 0 0 24px;
  font-size: var(--type-body);
  line-height: 1.65;
  color: var(--ink-dim);
}

.ops-grid__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.ops-grid__link {
  color: var(--accent);
  text-decoration: none;
}

.ops-grid__link:hover {
  text-decoration: underline;
}

/* ——— Marquee ——— */
.marquee {
  margin: 60px 0;
  padding: 18px 0;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 60%, transparent);
}

.marquee__track {
  display: flex;
  gap: 60px;
  width: max-content;
  white-space: nowrap;
  animation: marqueeScroll 40s linear infinite;
}

.marquee__seg {
  font-family: var(--mono);
  font-size: 0.875rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.marquee__seg em {
  margin: 0 20px;
  font-style: normal;
  color: var(--accent);
}

@keyframes marqueeScroll {
  to {
    transform: translateX(-50%);
  }
}

/* ——— Affiliations ——— */
.affiliations {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding: 60px var(--space-md);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
  text-align: center;
}

.affiliations__label {
  margin: 0 0 24px;
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.affiliations__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.affiliation {
  font-family: var(--mono);
  font-size: 1rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink);
}

.affiliation__sep {
  font-size: 0.875rem;
  color: var(--accent);
}

.affiliations__sub {
  margin: 20px 0 0;
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ——— Charter preview ——— */
.charter-preview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.charter-preview__para {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-weight: 300;
  font-size: var(--type-pullprose);
  line-height: 1.35;
  color: var(--ink);
}

.charter-preview__para em {
  font-style: italic;
  color: var(--accent);
}

.tenets {
  list-style: none;
  counter-reset: tenet;
  margin: 0;
  padding: 0;
}

.tenets li {
  position: relative;
  counter-increment: tenet;
  padding: 18px 0 18px 5.25rem;
  border-top: 1px solid var(--line);
}

.tenets li:last-child {
  border-bottom: 1px solid var(--line);
}

.tenets li::before {
  content: "TENET." counter(tenet, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 18px;
  width: 4.5rem;
  font-family: var(--mono);
  font-size: var(--type-mono-label);
  letter-spacing: 0.22em;
  color: var(--accent);
}

.tenets li strong {
  display: block;
  font-weight: 500;
  color: var(--ink);
}

.tenets li span {
  font-size: var(--type-body);
  line-height: 1.55;
  color: var(--ink-dim);
}

.charter-preview__more {
  display: block;
  margin-top: 40px;
  font-family: var(--mono);
  font-size: 0.875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--accent);
}

.charter-preview__more:hover {
  text-decoration: underline;
}

/* ——— Responsive ——— */
@media (max-width: 64rem) {
  .layers__grid {
    grid-template-columns: 1fr;
  }

  .ops-grid__item--span-5,
  .ops-grid__item--span-6,
  .ops-grid__item--span-7 {
    grid-column: span 12;
  }

  .ops-grid__item--featured::after {
    display: none;
  }
}

@media (max-width: 56.25rem) {
  .charter-preview__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 45rem) {
  .page-section {
    padding: 64px 0;
  }

  .page-section__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .page-section__kicker {
    position: static;
  }

  .index-hero h1.index-hero__title {
    font-size: clamp(44px, 13.5vw, 96px);
  }
}

@media (prefers-reduced-motion: reduce) {
    .ops-grid__item--featured::after,
  .marquee__track {
    animation: none;
  }
}

/* ——— Hero split: intro + twister ——— */
.index-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center;
  gap: var(--space-lg);
}

.index-hero__split .index-hero__cta {
  margin-top: var(--space-lg);
}

@media (max-width: 52rem) {
  .index-hero__split {
    grid-template-columns: 1fr;
  }
  .twister {
    max-width: 26rem;
    margin-inline: auto;
  }
}

/* ——— Twister animation ——— */
.twister {
  margin: 0;
  width: 100%;
}

.twister__svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.twister__shadow {
  fill: rgba(var(--accent-rgb), 0.14);
}

.twister__ring {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1.4;
  stroke-dasharray: 10 6 2 6;
  stroke-linecap: round;
  animation: twister-spin linear infinite;
}

.twister__ring--accent {
  stroke: var(--accent);
  stroke-width: 1.8;
}

.twister__ring--back {
  opacity: 0.5;
}

@keyframes twister-spin {
  to {
    stroke-dashoffset: -96;
  }
}

/* Skunk parts */
.tk__fur { fill: var(--skunk-fur); }
.tk__body { filter: var(--skunk-halo); }
.tk__stripe { fill: none; stroke: var(--skunk-stripe); stroke-width: 1.7; stroke-linecap: round; }
.tk__limb { stroke: var(--skunk-fur); stroke-width: 2.6; stroke-linecap: round; fill: none; }
.tk__nose { fill: var(--accent); }

.tk__goggle { fill: #3a3a3a; stroke: var(--accent); stroke-width: 0.5; }
.tk__lens { fill: var(--signal); }
.tk__glint { stroke: #ffffff; stroke-width: 0.6; stroke-linecap: round; }
.tk__strap { fill: none; stroke: #3a3a3a; stroke-width: 1.2; stroke-linecap: round; }

.tk__collar { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; }
.tk__collar-led { fill: var(--signal); animation: tk-led 0.9s steps(2, jump-none) infinite; }
.tk__collar-led--2 { animation-delay: -0.3s; }
.tk__collar-led--3 { animation-delay: -0.6s; }

.tk__watch-strap { fill: #3a3a3a; }
.tk__watch-face { fill: var(--signal); animation: tk-watch 2s ease-in-out infinite; }

.tk__pod { fill: #3a3a3a; stroke: var(--accent); stroke-width: 0.45; }
.tk__pod-light { fill: var(--accent); animation: tk-led 0.6s steps(2, jump-none) infinite; }
.tk__mast { stroke: #3a3a3a; stroke-width: 0.6; }
.tk__rotor { stroke: var(--ink-dim); stroke-width: 0.7; stroke-linecap: round; }

.tk__leg, .tk__tail, .tk__bob, .tk__rotor { transform-box: fill-box; }
.tk__leg { transform-origin: 50% 0%; animation: tk-gallop 0.3s ease-in-out infinite alternate; animation-delay: var(--tk-delay, 0s); }
.tk__leg--b { animation-direction: alternate-reverse; }
.tk__bob { animation: tk-bob 0.15s ease-in-out infinite alternate; }
.tk__tail { transform-origin: 100% 90%; animation: tk-tail 0.3s ease-in-out infinite alternate; }
.tk__rotor { transform-origin: 50% 50%; animation: tk-rotor 0.12s linear infinite; }

@keyframes tk-gallop { from { transform: rotate(-28deg); } to { transform: rotate(28deg); } }
@keyframes tk-bob { from { transform: translateY(0); } to { transform: translateY(-1.3px); } }
@keyframes tk-tail { from { transform: rotate(-6deg); } to { transform: rotate(8deg); } }
@keyframes tk-rotor { 0% { transform: scaleX(1); } 50% { transform: scaleX(0.15); } 100% { transform: scaleX(1); } }
@keyframes tk-led { 0% { opacity: 1; } 50% { opacity: 0.2; } }
@keyframes tk-watch { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }

:root[data-theme="dark"] .tk__goggle,
:root[data-theme="dark"] .tk__strap,
:root[data-theme="dark"] .tk__watch-strap,
:root[data-theme="dark"] .tk__pod,
:root[data-theme="dark"] .tk__mast {
  fill: #5a5a5a;
}

:root[data-theme="dark"] .tk__strap,
:root[data-theme="dark"] .tk__mast {
  fill: none;
  stroke: #5a5a5a;
}

.twister__svg.is-still .twister__ring,
.twister__svg.is-still .tk__leg,
.twister__svg.is-still .tk__bob,
.twister__svg.is-still .tk__tail,
.twister__svg.is-still .tk__rotor,
.twister__svg.is-still [class*="led"],
.twister__svg.is-still .tk__watch-face {
  animation: none;
}