/* NAH Site — Version 4
   Fresh brief direction: corporate platform, not an iteration of V1/V2/V3. */

.v4-only { display: none !important; }

[data-version="v4"] body {
  background: var(--hero-tint);
}

[data-version="v4"] .legacy-main,
[data-version="v4"] .footer--v1,
[data-version="v4"] .footer--v2,
[data-version="v4"] .scroll-progress {
  display: none !important;
}

[data-version="v4"] .v4-only { display: block !important; }
[data-version="v4"] .v4-brand { display: inline-flex !important; }

[data-version="v4"] .header {
  background: color-mix(in srgb, var(--hero-tint) 86%, transparent);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(45, 45, 45, 0.08);
}

[data-version="v4"] .header.is-scrolled {
  background: color-mix(in srgb, var(--hero-tint) 94%, transparent);
  box-shadow: none;
}

[data-version="v4"] .nav__list a {
  color: var(--color-text-muted);
}

[data-version="v4"] .logo {
  opacity: 1;
}

[data-version="v4"] .header .logo__variant {
  display: none;
}

[data-version="v4"] .header .logo__word {
  color: var(--color-charcoal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 800;
}

.version-panel__badge--v4 {
  background: var(--color-charcoal);
}

[data-version="v4"] .version-panel__btn[data-version="v4"].is-active {
  background: var(--color-accent-muted);
  box-shadow: inset 0 0 0 1.5px var(--color-accent);
}

.v4-main {
  color: var(--color-charcoal);
  background:
    radial-gradient(circle at 12% 10%, var(--glow-primary), transparent 28rem),
    linear-gradient(180deg, var(--hero-tint) 0%, var(--color-white) 38%, var(--hero-tint) 100%);
}

.v4-hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--header-h) + 4rem) 0 5rem;
  overflow: hidden;
}

.v4-hero__grain {
  position: absolute;
  inset: 0;
  opacity: 0.45;
  background-image:
    linear-gradient(rgba(45, 45, 45, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 45, 45, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  pointer-events: none;
}

.v4-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(22rem, 0.95fr);
  gap: 4rem;
  align-items: center;
}

.v4-brand {
  align-items: center;
  gap: 0.85rem;
  color: var(--color-charcoal);
}

.v4-brand__mark {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 0.48rem);
  gap: 0.18rem;
  height: 2.25rem;
  align-items: end;
}

.v4-brand__mark span {
  display: block;
  width: 0.48rem;
  border-radius: 999px 999px 0.2rem 0.2rem;
  background: var(--color-primary);
  transition: background 0.4s var(--ease-out);
}

.v4-brand__mark span:nth-child(1) { height: 1.35rem; }
.v4-brand__mark span:nth-child(2) { height: 2.25rem; background: var(--color-charcoal); }
.v4-brand__mark span:nth-child(3) { height: 1.7rem; background: var(--color-accent); }

.v4-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.v4-brand__text strong {
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: var(--color-charcoal);
}

.v4-brand__text small {
  margin-top: 0.35rem;
  font-size: 0.68rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.v4-kicker,
.v4-label {
  margin: 3rem 0 1rem;
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  transition: color 0.4s var(--ease-out);
}

.v4-hero h1 {
  max-width: 13ch;
  font-family: var(--font-serif);
  font-size: clamp(4rem, 9vw, 8.5rem);
  line-height: 0.86;
  letter-spacing: -0.06em;
  color: var(--color-charcoal);
}

.v4-lead {
  max-width: 42rem;
  margin-top: 2rem;
  font-size: clamp(1.05rem, 1.4vw, 1.35rem);
  line-height: 1.65;
  color: var(--color-text);
}

.v4-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.2rem;
}

.v4-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
  transition: transform 0.25s, background 0.25s, color 0.25s;
}

.v4-btn:hover {
  transform: translateY(-2px);
}

.v4-btn--primary {
  color: var(--color-white);
  background: var(--color-charcoal);
}

.v4-btn--light {
  color: var(--color-charcoal);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(45, 45, 45, 0.1);
}

.v4-hero__panel {
  position: relative;
  min-height: 34rem;
  border-radius: 2rem;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.32)),
    url("https://images.unsplash.com/photo-1582719471384-894fbb16e074?w=1000&q=80") center/cover;
  box-shadow: 0 32px 90px var(--glow-primary);
  overflow: hidden;
}

.v4-hero__panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--color-charcoal), transparent 55%);
  opacity: 0.5;
}

.v4-bottle {
  position: absolute;
  right: 12%;
  bottom: 13%;
  z-index: 1;
  width: 8rem;
  height: 17rem;
  border-radius: 2.4rem 2.4rem 1.4rem 1.4rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: inset 0 0 30px rgba(255, 255, 255, 0.8), 0 22px 55px rgba(23, 21, 18, 0.25);
  transform: rotate(-8deg);
}

.v4-bottle__cap {
  position: absolute;
  top: -2.1rem;
  left: 2.2rem;
  width: 3.6rem;
  height: 2.5rem;
  border-radius: 0.8rem 0.8rem 0.25rem 0.25rem;
  background: var(--color-primary);
  transition: background 0.4s var(--ease-out);
}

.v4-bottle__label {
  position: absolute;
  left: 1.1rem;
  right: 1.1rem;
  top: 6.6rem;
  padding: 1rem 0;
  border-radius: 1rem;
  background: var(--color-charcoal);
  color: var(--color-white);
  text-align: center;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.v4-bottle__line {
  position: absolute;
  left: 2.2rem;
  right: 2.2rem;
  bottom: 2.2rem;
  height: 0.22rem;
  border-radius: 999px;
  background: var(--color-accent);
  transition: background 0.4s var(--ease-out);
}

.v4-panel-card {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 14rem;
  padding: 0.85rem 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 38px rgba(23, 21, 18, 0.16);
}

.v4-panel-card strong {
  font-size: 2rem;
  color: var(--color-primary);
  transition: color 0.4s var(--ease-out);
}

.v4-panel-card span {
  font-size: 0.82rem;
  line-height: 1.25;
  color: var(--color-text);
}

.v4-panel-card--one {
  top: 2rem;
  left: 2rem;
}

.v4-panel-card--two {
  right: 2rem;
  bottom: 2rem;
}

.v4-proof {
  padding: 1.25rem 0;
  background: var(--color-charcoal);
  color: var(--color-white);
}

.v4-proof__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.v4-proof__grid div {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 1rem 0;
}

.v4-proof__grid strong {
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  line-height: 1;
  color: var(--color-primary-light);
  transition: color 0.4s var(--ease-out);
}

.v4-proof__grid span {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.68);
}

.v4-section {
  padding: 7rem 0;
}

.v4-split,
.v4-science__grid,
.v4-contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
}

.v4-section h2 {
  font-size: clamp(2.4rem, 5vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
  color: var(--color-charcoal);
}

.v4-rich-text,
.v4-science__grid p,
.v4-contact p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.v4-rich-text p + p {
  margin-top: 1.3rem;
}

.v4-section--warm {
  background: var(--hero-tint);
}

.v4-section-head {
  max-width: 52rem;
  margin-bottom: 3rem;
}

.v4-section-head--center {
  margin-inline: auto;
  text-align: center;
}

.v4-portfolio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.v4-product {
  position: relative;
  min-height: 18rem;
  padding: 1.4rem;
  border-radius: 1.4rem;
  background: var(--color-white);
  border: 1px solid rgba(45, 45, 45, 0.08);
  box-shadow: 0 12px 34px rgba(45, 45, 45, 0.05);
  overflow: hidden;
}

.v4-product::after {
  content: "";
  position: absolute;
  right: -4rem;
  bottom: -4rem;
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  background: var(--color-primary-muted);
  transition: background 0.4s var(--ease-out);
}

.v4-product--featured {
  grid-column: span 2;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--color-charcoal) 85%, transparent), color-mix(in srgb, var(--color-primary) 20%, transparent)),
    url("https://images.unsplash.com/photo-1622597467835-fbcbb712061e?w=1000&q=80") center/cover;
  color: var(--color-white);
}

.v4-product span {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.28rem 0.62rem;
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  transition: background 0.4s var(--ease-out);
}

.v4-product h3 {
  position: relative;
  z-index: 1;
  font-size: 1.45rem;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--color-charcoal);
}

.v4-product--featured h3 {
  color: var(--color-white);
}

.v4-product p {
  position: relative;
  z-index: 1;
  max-width: 28rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.v4-product--featured p {
  color: rgba(255, 255, 255, 0.78);
}

.v4-model {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border-radius: 1.4rem;
  background: var(--color-primary-muted);
  border: 1px solid var(--color-primary-muted);
}

.v4-model article {
  padding: 2rem;
  background: color-mix(in srgb, var(--color-white) 58%, transparent);
}

.v4-model span {
  display: block;
  margin-bottom: 2.2rem;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--color-primary);
  transition: color 0.4s var(--ease-out);
}

.v4-model h3 {
  font-size: 1.25rem;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-charcoal);
}

.v4-model p {
  color: var(--color-text-muted);
  line-height: 1.65;
}

.v4-science {
  color: var(--color-white);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--color-charcoal) 95%, transparent), color-mix(in srgb, var(--color-primary) 30%, transparent)),
    url("https://images.unsplash.com/photo-1532187863486-abf9db581962?w=1400&q=80") center/cover;
}

.v4-science h2,
.v4-science .v4-label {
  color: var(--color-white);
}

.v4-science__grid p {
  color: rgba(255, 255, 255, 0.72);
}

.v4-science__grid ul {
  list-style: none;
  display: grid;
  gap: 0.8rem;
  align-content: center;
}

.v4-science__grid li {
  padding: 1rem 1.1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
}

.v4-contact {
  align-items: center;
  padding: 3rem;
  border-radius: 2rem;
  background: var(--color-white);
  box-shadow: 0 24px 80px var(--glow-primary);
}

.v4-contact a {
  display: inline-flex;
  margin-top: 1rem;
  font-weight: 800;
  color: var(--color-primary);
  transition: color 0.4s var(--ease-out);
}

.v4-footer {
  padding: 4rem 0 2rem;
  color: rgba(255, 255, 255, 0.72);
  background: var(--color-charcoal);
  border-top: 1px solid var(--color-primary-muted);
}

.v4-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-primary-muted);
}

.v4-brand--footer {
  color: var(--color-white);
}

.v4-footer p {
  max-width: 24rem;
  margin-top: 1rem;
  line-height: 1.7;
}

.v4-footer nav,
.v4-footer__grid > div:last-child {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.v4-footer a {
  color: rgba(255, 255, 255, 0.72);
  transition: color 0.25s;
}

.v4-footer a:hover {
  color: var(--color-primary-light);
}

.v4-footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.5rem;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.42);
}

.v4-footer__bottom p {
  margin: 0;
}

@media (max-width: 1024px) {
  .v4-hero__grid,
  .v4-split,
  .v4-science__grid,
  .v4-contact {
    grid-template-columns: 1fr;
  }

  .v4-portfolio,
  .v4-model,
  .v4-proof__grid,
  .v4-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .v4-product--featured {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .v4-hero {
    padding-top: calc(var(--header-h) + 2rem);
  }

  .v4-hero__grid,
  .v4-section {
    gap: 2rem;
  }

  .v4-proof__grid,
  .v4-portfolio,
  .v4-model,
  .v4-footer__grid,
  .v4-footer__bottom {
    grid-template-columns: 1fr;
  }

  .v4-footer__bottom {
    display: grid;
  }

  .v4-contact {
    padding: 2rem;
  }
}