/* ══════════════════════════════════════════════════════
   THE COLLISION v4 — steffikieffer.ai
   50+ READABLE. Big type. High contrast. No grey.
   ══════════════════════════════════════════════════════ */

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 18px; }

body {
  font-family: var(--body);
  color: var(--ink-on-dark);
  background: var(--dark);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }

h1, h2, h3, h4 {
  font-family: var(--heading);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
}

a { color: inherit; text-decoration: none; }

/* ── Accessibility ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); border: 0;
}

.skip-link {
  position: absolute; top: -100px; left: 16px;
  background: var(--yellow); color: var(--dark);
  padding: 12px 24px; font-family: var(--heading);
  font-weight: 700; z-index: 200;
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus { top: 16px; }

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .marquee__track { animation: none !important; }
}

/* ── Utilities ── */
.highlight {
  background: linear-gradient(to top, var(--yellow) 38%, transparent 38%);
  padding: 0 0.08em;
  color: var(--dark) !important;
}

.highlight-solid {
  background: var(--yellow);
  color: var(--dark) !important;
  padding: 0.01em 0.08em;
  display: inline;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.section-label {
  font-family: var(--heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: var(--space-lg);
}
.section-label--on-dark { color: var(--purple); }

/* ── Buttons — ALWAYS all caps ── */
.btn {
  display: inline-block;
  font-family: var(--heading);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.btn--yellow {
  background: var(--yellow);
  color: var(--dark);
  padding: 18px 44px;
}
.btn--yellow:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 50px var(--yellow-glow);
  color: var(--dark);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  padding: 18px 44px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.btn--outline:hover {
  border-color: var(--white);
  transform: translateY(-2px);
  color: var(--white);
}

.btn--lg {
  font-size: 1.1rem;
  padding: 22px 56px;
}

.btn--sm {
  font-size: 0.8rem;
  padding: 12px 28px;
}

/* ── Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: 0.12s; }
.reveal-d2 { transition-delay: 0.24s; }


/* ══════════════════════════════════════════════════════
   NAVIGATION — Big, bold, readable for 50+
   ══════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 24px 0;
  transition: all 0.5s var(--ease-out);
}

.nav:not(.nav--solid) .nav__links a:not(.nav__cta) {
  mix-blend-mode: difference;
}
.nav:not(.nav--solid) .nav__logo {
  mix-blend-mode: difference;
}

.nav--solid {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 14px 0;
}

.nav__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav__links a {
  font-family: var(--heading);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.02em;
  transition: opacity var(--duration-fast);
  opacity: 0.85;
}
.nav__links a:hover { opacity: 1; }

.nav__lang {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.nav__lang span { opacity: 0.3; }
.nav__lang a { opacity: 0.45; }
.nav__lang a:hover { opacity: 1; }
.nav__lang--active { opacity: 1 !important; }

.nav__cta {
  background: var(--yellow) !important;
  color: var(--dark) !important;
  font-weight: 700 !important;
  font-size: 1.05rem !important;
  padding: 14px 32px;
  opacity: 1 !important;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out) !important;
}
.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px var(--yellow-glow);
}

.nav__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 14px;
  z-index: 101;
  min-width: 48px;
  min-height: 48px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.nav__hamburger span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--white);
  transition: all var(--duration-base) var(--ease-out);
  transform-origin: center;
}


/* ══════════════════════════════════════════════════════
   HERO — Bold text on cinematic photos
   ══════════════════════════════════════════════════════ */
.hero {
  background: var(--dark);
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 2s ease;
  will-change: opacity, transform;
}

.hero__bg img.active {
  opacity: 1;
  animation: kenBurns 8s ease-in-out forwards;
}

@keyframes kenBurns {
  0% { transform: scale(1.0); }
  100% { transform: scale(1.08); }
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.88) 0%,
    rgba(10, 10, 10, 0.6) 40%,
    rgba(10, 10, 10, 0.3) 70%,
    rgba(10, 10, 10, 0.15) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
  width: 100%;
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-3xl);
}

.hero__brand {
  font-family: var(--heading);
  font-size: clamp(5rem, 14vw, 12rem);
  font-weight: 800;
  line-height: 0.88;
  color: var(--white);
  letter-spacing: -0.05em;
  margin-bottom: var(--space-md);
}

.hero__claim {
  font-family: var(--heading);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: 0.02em;
  color: var(--yellow);
  margin-bottom: var(--space-xl);
  line-height: 1.1;
}

.hero__tagline {
  font-family: var(--heading);
  font-weight: 500;
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  line-height: 1.45;
  color: var(--white);
  max-width: 620px;
  margin-bottom: var(--space-lg);
}

.hero__name {
  font-family: var(--heading);
  font-weight: 600;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: var(--space-xl);
}


/* ══════════════════════════════════════════════════════
   MARQUEE
   ══════════════════════════════════════════════════════ */
.marquee {
  background: var(--yellow);
  padding: 20px 0;
  overflow: hidden;
  white-space: nowrap;
}

.marquee__track {
  display: inline-flex;
  animation: marqueeScroll 25s linear infinite;
}

.marquee__track span {
  font-family: var(--heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dark);
  padding: 0 var(--space-xl);
  flex-shrink: 0;
}

.marquee__track span::after {
  content: ' · ';
  padding-left: var(--space-xl);
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}


/* ══════════════════════════════════════════════════════
   LOGOS
   ══════════════════════════════════════════════════════ */
.logos {
  background: var(--light);
  padding: var(--space-sm) 0 var(--space-md);
  border-bottom: 1px solid rgba(10, 10, 10, 0.06);
}

.logos__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.logos__grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg) var(--space-xl);
  flex-wrap: wrap;
}

.logos__grid span {
  font-family: var(--heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-on-light);
  opacity: 0.4;
  white-space: nowrap;
  transition: opacity var(--duration-base);
}
.logos__grid span:hover { opacity: 0.8; }


/* ══════════════════════════════════════════════════════
   KEYNOTES — Text left, photo right, detail cards below
   ══════════════════════════════════════════════════════ */
.keynotes {
  background: var(--light);
  color: var(--ink-on-light);
  padding: var(--space-4xl) 0;
}

.keynotes__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

/* Intro: text left, photo right */
.keynotes__intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
  margin-bottom: var(--space-3xl);
}

.keynotes__text h2 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  color: var(--ink-on-light);
  margin-bottom: var(--space-lg);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.keynotes__text p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--ink-on-light);
  opacity: 0.75;
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

.keynotes__photo { overflow: hidden; }

.keynotes__photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(15%) contrast(1.05);
  transition: filter 0.8s var(--ease-out), transform 0.6s var(--ease-out);
}
.keynotes__photo:hover img {
  filter: grayscale(0%) contrast(1);
  transform: scale(1.02);
}

/* Keynote detail cards — 2×2 grid */
.keynotes__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.keynote-card {
  padding: var(--space-xl);
  background: var(--white);
  border: 1px solid rgba(10, 10, 10, 0.08);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--duration-base) var(--ease-out), transform var(--duration-base) var(--ease-out);
}
.keynote-card:hover {
  box-shadow: 0 16px 48px rgba(10, 10, 10, 0.1), 0 4px 12px rgba(10, 10, 10, 0.06);
  transform: translateY(-4px);
}

/* Badge — simple text label, consistent with section-label */
.keynote-card__badge {
  display: block;
  font-family: var(--heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: var(--space-sm);
}
.keynote-card__badge--signature {
  color: var(--purple);
}

/* Title */
.keynote-card__title {
  display: block;
  font-family: var(--heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink-on-light);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

/* Tension line — the unspoken question */
.keynote-card__tension {
  display: block;
  font-family: var(--body);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--ink-on-light);
  opacity: 0.65;
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

/* Description */
.keynote-card__desc {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ink-on-light);
  opacity: 0.75;
  margin-bottom: var(--space-lg);
}

/* Takeaway block */
.keynote-card__takeaway {
  background: var(--light);
  border-left: 3px solid var(--purple);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-lg);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--ink-on-light);
}
.keynote-card__takeaway-label {
  display: block;
  font-family: var(--heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--dark);
  margin-bottom: var(--space-sm);
}

/* Meta: audience + format */
.keynote-card__meta {
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-on-light);
  opacity: 0.7;
}
.keynote-card__audience {
  margin-bottom: var(--space-sm);
}
.keynote-card__audience strong,
.keynote-card__meta strong {
  font-weight: 700;
  opacity: 1;
}
.keynote-card__format {
  font-family: var(--heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--dark);
  opacity: 0.5;
}

/* Expandable sub-themes */
.keynote-card__subs {
  margin-bottom: var(--space-lg);
  border-top: 1px solid rgba(10, 10, 10, 0.06);
  padding-top: var(--space-md);
}
.keynote-card__subs-toggle {
  background: none;
  border: none;
  font-family: var(--heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  width: 100%;
  text-align: left;
  transition: color var(--duration-fast) var(--ease-out);
}
.keynote-card__subs-toggle:hover {
  color: rgba(10, 10, 10, 0.7);
}
.keynote-card__subs-arrow {
  font-size: 1.1rem;
  font-weight: 400;
  transition: transform var(--duration-base) var(--ease-out);
  margin-left: auto;
}
.keynote-card__subs-toggle[aria-expanded="true"] .keynote-card__subs-arrow {
  transform: rotate(45deg);
}
.keynote-card__subs-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-slow) var(--ease-out);
}
.keynote-card__subs-content.is-open {
  max-height: 400px;
}
.keynote-card__sub {
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(10, 10, 10, 0.04);
}
.keynote-card__sub:last-child {
  border-bottom: none;
}
.keynote-card__sub strong {
  display: block;
  font-family: var(--heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.keynote-card__sub span {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-on-light);
  opacity: 0.65;
}

/* Card CTA */
.keynote-card__cta {
  margin-top: auto;
  align-self: flex-start;
}

.keynotes__note {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink-on-light);
  opacity: 0.6;
  font-style: italic;
  text-align: center;
}


/* ══════════════════════════════════════════════════════
   GALLERY — Light bg, arrows, drag scroll
   ══════════════════════════════════════════════════════ */
.gallery {
  background: var(--light);
  padding: var(--space-xl) 0;
  overflow: hidden;
  cursor: grab;
  position: relative;
}
.gallery:active { cursor: grabbing; }

.gallery__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: var(--dark);
  color: var(--white);
  border: none;
  width: 52px;
  height: 52px;
  font-size: 1.3rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-base);
}
.gallery__arrow:hover {
  background: var(--yellow);
  color: var(--dark);
}
.gallery__arrow--left { left: var(--grid-gutter); }
.gallery__arrow--right { right: var(--grid-gutter); }

.gallery__track {
  display: flex;
  gap: var(--space-md);
  padding: 0 var(--grid-gutter);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
}
.gallery__track::-webkit-scrollbar { display: none; }

.gallery__item {
  flex: 0 0 auto;
  width: clamp(300px, 40vw, 550px);
  scroll-snap-align: start;
  overflow: hidden;
}

.gallery__item img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  filter: grayscale(15%);
  transition: filter 0.6s ease, transform 0.6s ease;
}

.gallery__item:hover img {
  filter: grayscale(0%);
  transform: scale(1.03);
}


/* ══════════════════════════════════════════════════════
   ABOUT — Big image + text side by side
   ══════════════════════════════════════════════════════ */
.about {
  background: var(--dark);
  color: var(--ink-on-dark);
  padding: var(--space-4xl) 0;
}

.about__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about__photo { overflow: hidden; }

.about__photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(15%) contrast(1.05);
  transition: filter 0.8s var(--ease-out);
}
.about__photo:hover img { filter: grayscale(0%) contrast(1); }

.about__content h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--white);
  margin-bottom: var(--space-xl);
  line-height: 1.15;
}

.about__content p {
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--ink-on-dark);
  margin-bottom: var(--space-md);
}

.about__credo {
  margin-top: var(--space-xl);
  font-family: var(--heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--white) !important;
}


/* ══════════════════════════════════════════════════════
   SNAPSHOTS — Organic photo mosaic, raw & personal
   ══════════════════════════════════════════════════════ */
.snapshots {
  background: var(--light);
  padding: var(--space-3xl) 0 var(--space-2xl);
  overflow: hidden;
}

.snapshots__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.snapshots__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--space-md);
}

.snapshots__item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  transition: transform var(--duration-base) var(--ease-out);
}

.snapshots__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.9);
  transition: filter var(--duration-base), transform 0.6s var(--ease-out);
}
.snapshots__item:hover img {
  filter: saturate(1);
  transform: scale(1.03);
}

/* Subtle organic rotations */
.snapshots__item:nth-child(1) { transform: rotate(-1.2deg); }
.snapshots__item:nth-child(2) { transform: rotate(0.8deg); }
.snapshots__item:nth-child(3) { transform: rotate(-0.5deg); }
.snapshots__item:nth-child(4) { transform: rotate(0.6deg); }
.snapshots__item:nth-child(5) { transform: rotate(-0.9deg); }
.snapshots__item:nth-child(6) { transform: rotate(1.1deg); }

.snapshots__item:nth-child(1):hover,
.snapshots__item:nth-child(2):hover,
.snapshots__item:nth-child(3):hover,
.snapshots__item:nth-child(4):hover,
.snapshots__item:nth-child(5):hover,
.snapshots__item:nth-child(6):hover { transform: rotate(0deg); }

/* Tall item spans two rows */
.snapshots__item--tall {
  grid-row: span 2;
}

/* Fixed heights for grid consistency */
.snapshots__item:not(.snapshots__item--tall) img {
  height: 220px;
}
.snapshots__item--tall img {
  height: 100%;
  min-height: 456px;
}

/* Captions */
.snapshots__item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-sm) var(--space-md);
  background: linear-gradient(transparent, rgba(10, 10, 10, 0.7));
  font-family: var(--heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--white);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--duration-base), transform var(--duration-base);
}
.snapshots__item:hover figcaption {
  opacity: 1;
  transform: translateY(0);
}


/* ══════════════════════════════════════════════════════
   12 PRINCIPLES — Interactive tabs: show 3 at a time
   ══════════════════════════════════════════════════════ */
.principles {
  background: var(--light);
  color: var(--ink-on-light);
  padding: var(--space-4xl) 0;
}

.principles__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.principles__header {
  max-width: 750px;
  margin: 0 auto var(--space-xl);
  text-align: center;
}

.principles__header h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  color: var(--ink-on-light);
  line-height: 1.05;
  margin-bottom: var(--space-md);
}

.principles__header p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--ink-on-light);
  opacity: 0.7;
}

/* Tab navigation */
.principles__tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  flex-wrap: wrap;
}

.principles__tab {
  font-family: var(--heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: none;
  border: 2px solid rgba(10, 10, 10, 0.15);
  padding: 14px 28px;
  cursor: pointer;
  color: var(--ink-on-light);
  transition: all var(--duration-base);
}

.principles__tab:hover {
  border-color: var(--yellow);
}

.principles__tab.active {
  background: var(--dark);
  color: var(--yellow);
  border-color: var(--dark);
}

/* Category panels */
.principles__panel {
  display: none;
}

.principles__panel.active {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.principle-card {
  background: var(--white);
  padding: var(--space-xl) var(--space-lg);
  border: 1px solid rgba(10, 10, 10, 0.08);
  text-align: center;
}

.principle-card strong {
  display: block;
  font-family: var(--heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink-on-light);
  margin-bottom: var(--space-sm);
}

.principle-card__why {
  display: block;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-on-light);
  opacity: 0.65;
  margin-top: var(--space-sm);
}


/* ══════════════════════════════════════════════════════
   COLLISION QUOTE — Yellow. Giant type.
   ══════════════════════════════════════════════════════ */
.collision-quote {
  background: var(--yellow);
  padding: var(--space-4xl) 0;
}

.collision-quote__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.collision-quote blockquote {
  font-family: var(--heading);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--dark);
  max-width: 1000px;
  transition: opacity 0.6s ease;
}


/* ══════════════════════════════════════════════════════
   AI RETREAT — Mountain background, white cards
   ══════════════════════════════════════════════════════ */
.retreat {
  color: var(--ink-on-dark);
  padding: var(--space-4xl) 0;
  position: relative;
  overflow: hidden;
}

.retreat__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.retreat__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.retreat__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 10, 0.82) 0%,
    rgba(10, 10, 10, 0.65) 50%,
    rgba(10, 10, 10, 0.82) 100%
  );
}

.retreat__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
  position: relative;
  z-index: 1;
}

.retreat__header {
  margin-bottom: var(--space-3xl);
}

.retreat__header h2 {
  font-size: clamp(3rem, 7vw, 5rem);
  color: var(--white);
  margin-bottom: var(--space-lg);
  line-height: 0.95;
}

.retreat__lead {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--ink-on-dark);
  max-width: 620px;
}

/* White pillar cards */
.retreat__pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.retreat__pillar {
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  transition: transform var(--duration-base) var(--ease-out);
}
.retreat__pillar:hover { transform: translateY(-4px); }

.retreat__pillar h3 {
  font-size: 1.4rem;
  color: var(--dark);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.retreat__pillar p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--ink-on-light);
  opacity: 0.8;
}

/* Retreat images */
.retreat__images {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.retreat__img { overflow: hidden; }

.retreat__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(10%);
  transition: filter 0.6s ease, transform 0.6s ease;
}
.retreat__img:hover img {
  filter: grayscale(0%);
  transform: scale(1.02);
}

.retreat__img--large { grid-row: 1 / 3; }
.retreat__img--large img { min-height: 400px; }

/* Retreat details */
.retreat__details {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.retreat__facts {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.retreat__facts span {
  font-family: var(--heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--white);
  padding: 14px 28px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.3);
  transition: all var(--duration-base);
}
.retreat__facts span:hover {
  border-color: var(--yellow);
  color: var(--yellow);
}


/* ══════════════════════════════════════════════════════
   TESTIMONIALS — Light bg, bigger text
   ══════════════════════════════════════════════════════ */
.testimonials {
  background: var(--light);
  color: var(--ink-on-light);
  padding: var(--space-4xl) 0;
}

.testimonials__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.testimonials .section-label {
  color: var(--purple);
}

.testimonials__heading {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--ink-on-light);
  margin-bottom: var(--space-2xl);
  letter-spacing: -0.03em;
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.testimonial {
  background: var(--white);
  padding: var(--space-xl);
  border: 1px solid rgba(10, 10, 10, 0.08);
  transition: border-color var(--duration-base);
}
.testimonial:hover { border-color: var(--yellow); }

.testimonial p {
  font-family: var(--heading);
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--ink-on-light);
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.testimonial footer {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial footer strong {
  font-family: var(--heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-on-light);
}

.testimonial footer span {
  font-size: 0.9rem;
  color: var(--muted-on-light);
}


/* ══════════════════════════════════════════════════════
   LATEST / SOCIAL — Dark bg, 3-col cards
   ══════════════════════════════════════════════════════ */
.latest {
  background: var(--dark);
  color: var(--ink-on-dark);
  padding: var(--space-4xl) 0;
}

.latest__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.latest__heading {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--white);
  margin-bottom: var(--space-2xl);
  letter-spacing: -0.03em;
}

.latest__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.latest__card {
  display: block;
  padding: var(--space-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  transition: border-color var(--duration-base), transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out);
}
.latest__card:hover {
  border-color: var(--purple);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(168, 85, 247, 0.12);
}

.latest__card-label {
  font-family: var(--heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--purple);
  margin-bottom: var(--space-md);
}

.latest__card-title {
  font-family: var(--heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.latest__card-desc {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-on-dark);
  opacity: 0.65;
}

/* Light variant */
.latest--light {
  background: var(--light);
  color: var(--ink-on-light);
}
.latest--light .latest__heading { color: var(--ink-on-light); }
.latest--light .latest__card {
  background: var(--white);
  border-color: rgba(10, 10, 10, 0.08);
}
.latest--light .latest__card:hover {
  border-color: var(--purple);
  box-shadow: 0 12px 40px rgba(168, 85, 247, 0.1);
}
.latest--light .latest__card-title { color: var(--ink-on-light); }
.latest--light .latest__card-desc {
  color: var(--ink-on-light);
  opacity: 0.6;
}

/* Meetup card accent */
.latest__card--meetup .latest__card-label { color: var(--purple); }

/* ══════════════════════════════════════════════════════
   PODCAST — Dark bg.
   ══════════════════════════════════════════════════════ */
.podcast {
  background: var(--dark);
  color: var(--ink-on-dark);
  padding: var(--space-4xl) 0;
}

.podcast__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.podcast__content h2 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  margin-bottom: var(--space-lg);
  color: var(--white);
}

.podcast__content p {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--ink-on-dark);
  max-width: 460px;
  margin-bottom: var(--space-xl);
}

/* Latest episodes */
.podcast__episodes {
  margin-bottom: var(--space-xl);
}

.podcast__episode {
  display: block;
  padding: var(--space-md) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color var(--duration-fast);
}
.podcast__episode:first-child {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.podcast__episode:hover { border-bottom-color: var(--yellow); }

.podcast__episode-title {
  font-family: var(--heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 2px;
}

.podcast__episode-meta {
  font-size: 0.85rem;
  color: var(--muted-on-dark);
}

.podcast__links {
  display: flex;
  gap: var(--space-md);
}

.podcast__links a {
  font-family: var(--heading);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-on-dark);
  padding: 14px 28px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all var(--duration-base);
}
.podcast__links a:hover {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--dark);
}

.podcast__visual { overflow: hidden; }
.podcast__visual img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}


/* ══════════════════════════════════════════════════════
   FINALE — Contact + Newsletter
   ══════════════════════════════════════════════════════ */
.finale {
  background: var(--dark);
  color: var(--ink-on-dark);
  padding: var(--space-5xl) 0 var(--space-4xl);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.finale__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
}

.finale__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.finale__left h2 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  color: var(--white);
  line-height: 0.9;
  letter-spacing: -0.05em;
  margin-bottom: var(--space-lg);
}

.finale__left p {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--ink-on-dark);
  max-width: 520px;
  margin-bottom: var(--space-xl);
}

.finale__left .btn {
  margin-bottom: var(--space-xl);
}

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

.finale__info-item strong {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted-on-dark);
  margin-bottom: var(--space-xs);
}

.finale__info-item a,
.finale__info-item span {
  font-size: 1.05rem;
  color: var(--ink-on-dark);
  transition: color var(--duration-fast);
}

.finale__info-item a:hover {
  color: var(--yellow);
}

.finale__right h3 {
  font-family: var(--heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--space-lg);
}

.finale__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.finale__form label {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--muted-on-dark);
  margin-top: var(--space-sm);
}

.finale__form input,
.finale__form select,
.finale__form textarea {
  font-family: var(--body);
  font-size: 1rem;
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  padding: 14px 16px;
  transition: border-color var(--duration-fast);
}

.finale__form input:focus,
.finale__form select:focus,
.finale__form textarea:focus {
  outline: 2px solid var(--yellow);
  outline-offset: -2px;
  border-color: var(--yellow);
}
.finale__form input::placeholder,
.finale__form textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.finale__form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.finale__form select option {
  background: var(--dark);
  color: var(--white);
}

.finale__form textarea {
  resize: vertical;
  min-height: 100px;
}

.finale__consent {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.finale__consent input[type="checkbox"] {
  margin-top: 4px;
  flex-shrink: 0;
  accent-color: var(--yellow);
}

.finale__consent label {
  font-size: 0.8rem;
  text-transform: none;
  letter-spacing: normal;
  line-height: 1.5;
  color: var(--muted-on-dark);
  margin-top: 0;
}

.finale__consent label a {
  color: var(--ink-on-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.finale__consent label a:hover {
  color: var(--yellow);
}

.finale__form .btn {
  margin-top: var(--space-md);
  align-self: flex-start;
}

.finale__form .btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.finale__success {
  text-align: center;
  padding: var(--space-xl) 0;
}

.finale__success strong {
  display: block;
  font-family: var(--heading);
  font-size: 1.8rem;
  color: var(--yellow);
  margin-bottom: var(--space-md);
}

.finale__success p {
  font-size: 1.1rem;
  color: var(--ink-on-dark);
  line-height: 1.7;
}



/* ══════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════ */
.foot {
  background: var(--dark);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: var(--space-lg) 0;
}

.foot__inner {
  max-width: var(--grid-max);
  margin: 0 auto;
  padding: 0 var(--grid-gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.foot__left span, .foot__left a, .foot__right a {
  font-family: var(--heading);
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--muted-on-dark);
  transition: color var(--duration-fast);
}
.foot__left a:hover, .foot__right a:hover { color: var(--white); }

.foot__made {
  color: var(--white) !important;
  opacity: 0.6;
}

.foot__social {
  gap: var(--space-md);
}

.foot__social a {
  display: flex;
  align-items: center;
  color: var(--muted-on-dark);
  transition: color var(--duration-fast);
}

.foot__social a:hover {
  color: var(--yellow);
}

.foot__social svg {
  width: 20px;
  height: 20px;
}


/* ══════════════════════════════════════════════════════
   RESPONSIVE — Tablet
   ══════════════════════════════════════════════════════ */
@media (max-width: 960px) {
  .keynotes__intro { grid-template-columns: 1fr; gap: var(--space-xl); }
  .keynotes__grid { grid-template-columns: 1fr; }
  .keynote-card__title { font-size: 1.3rem; }
  .principles__panel.active { grid-template-columns: 1fr; }

  .about__inner { grid-template-columns: 1fr; gap: var(--space-xl); }

  .retreat__pillars { grid-template-columns: 1fr; }
  .retreat__images { grid-template-columns: 1fr; }
  .retreat__img--large { grid-row: auto; }
  .retreat__img--large img { min-height: 280px; }

  .podcast__inner { grid-template-columns: 1fr; gap: var(--space-xl); }
  .podcast__visual { order: -1; max-width: 400px; }

  .latest__grid { grid-template-columns: 1fr; }

  .finale__grid { grid-template-columns: 1fr; gap: var(--space-2xl); }

  .testimonials__grid { grid-template-columns: 1fr; }

  .nav:not(.nav--solid) .nav__links a:not(.nav__cta),
  .nav:not(.nav--solid) .nav__logo { mix-blend-mode: normal; }

  .nav__links {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100svh;
    background: rgba(10, 10, 10, 0.97);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    z-index: 9000;
  }
  .nav__links.active { display: flex; }
  .nav__links a:not(.nav__cta) {
    font-size: 1.5rem !important;
    opacity: 1 !important;
  }
  .nav__links .nav__cta {
    font-size: 1rem !important;
    padding: 12px 28px !important;
    white-space: nowrap;
  }
  .nav__hamburger {
    display: flex;
    position: relative;
    z-index: 9001;
  }
  .nav__hamburger.active span:first-child {
    transform: translateY(5px) rotate(45deg);
  }
  .nav__hamburger.active span:last-child {
    transform: translateY(-5px) rotate(-45deg);
  }
}


/* ══════════════════════════════════════════════════════
   RESPONSIVE — Mobile
   ══════════════════════════════════════════════════════ */
@media (max-width: 639px) {
  html { font-size: 17px; }

  .hero__brand { font-size: clamp(3.5rem, 15vw, 6rem); }
  .hero__content { padding-top: var(--space-3xl); }

  .marquee__track span { font-size: 0.8rem; padding: 0 var(--space-lg); }

  .logos__grid { gap: var(--space-sm) var(--space-md); }
  .logos__grid span { font-size: 0.85rem; }

  .keynotes { padding: var(--space-3xl) 0; }
  .keynotes__intro { grid-template-columns: 1fr; }
  .keynotes__grid { grid-template-columns: 1fr; }
  .keynote-card__title { font-size: 1.3rem; }

  .principles { padding: var(--space-3xl) 0; }
  .principles__tabs { gap: var(--space-sm); }
  .principles__tab { padding: 12px 20px; font-size: 0.85rem; min-height: 44px; }
  .principles__panel.active { grid-template-columns: 1fr; }

  .gallery__item { width: clamp(240px, 75vw, 300px); }
  .gallery__item img { height: 220px; }
  .gallery__arrow { width: 44px; height: 44px; font-size: 1rem; }

  .about { padding: var(--space-3xl) 0; }

  .snapshots { padding: var(--space-2xl) 0; }
  .snapshots__grid { grid-template-columns: repeat(2, 1fr); }
  .snapshots__item--tall { grid-row: span 2; }
  .snapshots__item--tall img { min-height: 320px; }
  .snapshots__item:not(.snapshots__item--tall) img { height: 155px; }

  .testimonials { padding: var(--space-3xl) 0; }

  .collision-quote blockquote { font-size: clamp(2rem, 10vw, 3.5rem); }
  .collision-quote { padding: var(--space-3xl) 0; }

  .retreat { padding: var(--space-3xl) 0; }
  .retreat__pillars { grid-template-columns: 1fr; gap: var(--space-md); }
  .retreat__details { flex-direction: column; align-items: flex-start; }
  .retreat__facts { flex-direction: column; gap: var(--space-sm); }

  .latest { padding: var(--space-3xl) 0; }
  .latest__grid { grid-template-columns: 1fr; }

  .podcast { padding: var(--space-3xl) 0; }
  .podcast__content h2 { font-size: clamp(2.5rem, 12vw, 4rem); }
  .podcast__links { flex-wrap: wrap; }
  .podcast__links a { font-size: 0.9rem; padding: 12px 20px; }

  .finale { padding: var(--space-3xl) 0; }
  .finale__left h2 { font-size: clamp(2.5rem, 12vw, 4rem); }

  .finale__form input,
  .finale__form select,
  .finale__form textarea { font-size: 16px; }

  .foot__inner { flex-direction: column; gap: var(--space-md); text-align: center; }
  .foot__left, .foot__right { flex-wrap: wrap; justify-content: center; }
}