/* ============================================================
   ALTULA — style.css
   Page layout: header, hero slider, sections, footer
   Breakpoints:
     < 768px            mobile
     768px — 1024px     tablet portrait
     1024px — 1280px    tablet landscape / small laptop
     1280px — 1920px    desktop
     >= 1920px          2K / 4K
   ============================================================ */

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background-color var(--transition), box-shadow var(--transition),
    height var(--transition);
}

.site-header.is-scrolled {
  height: 4.5rem;
  background-color: rgba(13, 27, 36, 0.96);
  box-shadow: 0 0.5rem 2rem rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(0.5rem);
}

/* Remove backdrop-filter while the mobile drawer is open so the fixed
   positioned .main-nav is not trapped inside the header containing block. */
.site-header.is-scrolled.is-nav-open {
  backdrop-filter: none;
}

.site-header .container {
  max-width: var(--container-wide);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.site-logo {
  flex-shrink: 0;
}

.site-logo img {
  height: 2rem;
  width: auto;
}

.main-nav .nav-list {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 2.4vw, 2.75rem);
}

.nav-item {
  position: relative;
}

.main-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.88);
  padding-block: 0.5rem;
}

.main-nav .nav-list > .nav-item > a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-gold);
  transition: width var(--transition);
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--color-gold);
}

.main-nav .nav-list > .nav-item > a:hover::after,
.main-nav .nav-list > .nav-item > a.is-active::after {
  width: 100%;
}

.main-nav .caret {
  width: 0.625rem;
  height: 0.625rem;
  transition: transform var(--transition);
}

/* Dropdown sub-menu (desktop, shown on hover / keyboard focus) */
.sub-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  min-width: 16rem;
  padding: 0.75rem 0;
  background-color: rgba(13, 27, 36, 0.97);
  border-top: 2px solid var(--color-gold);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 0.5rem);
  transition: opacity var(--transition), transform var(--transition),
    visibility var(--transition);
}

.has-sub:hover .sub-menu,
.has-sub:focus-within .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

.has-sub:hover > a .caret,
.has-sub:focus-within > a .caret {
  transform: rotate(180deg);
}

.sub-menu a {
  display: block;
  padding: 0.625rem 1.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: none;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
}

.sub-menu a:hover {
  color: var(--color-gold);
  background-color: rgba(200, 164, 95, 0.08);
}

.header-cta {
  flex-shrink: 0;
  padding: 0.75rem 1.5rem;
}

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.375rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.5rem;
  z-index: calc(var(--z-nav-mobile) + 1);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(0.5rem) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-0.5rem) rotate(-45deg);
}

/* ============================================================
   Hero slider
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 40rem;
  max-height: 70rem;
  overflow: hidden;
  background-color: var(--color-ink);
  color: var(--color-white);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.9s ease, visibility 0.9s ease;
}

.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}

.hero-slide__media,
.hero-slide__media video,
.hero-slide__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-slide__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(13, 27, 36, 0.88) 0%,
    rgba(13, 27, 36, 0.55) 45%,
    rgba(13, 27, 36, 0.25) 100%
  );
}

.hero-slide .container {
  position: relative;
  z-index: 2;
  max-width: var(--container-wide);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-slide__content {
  max-width: 44rem;
  padding-top: var(--header-h);
}

.hero-slide__eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.85);
}

.hero-slide__count {
  margin-top: clamp(1.5rem, 3vh, 2.75rem);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.65);
}

.hero-slide__count .current {
  color: var(--color-gold);
}

.hero-slide__title {
  margin-top: 0.75rem;
  font-size: var(--fs-hero);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: 0.01em;
}

.hero-slide__text {
  margin-top: 1.5rem;
  max-width: 34rem;
  font-size: var(--fs-lead);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
}

.hero-slide__actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: clamp(2rem, 4vh, 3rem);
}

/* Hero controls: prev / next arrows, bottom-left (per design) */
.hero-controls {
  position: absolute;
  z-index: 3;
  left: var(--gutter);
  bottom: clamp(2rem, 6vh, 4.5rem);
  display: flex;
  gap: 0.625rem;
  max-width: var(--container-wide);
}

@media (min-width: 100rem) {
  .hero-controls {
    left: calc((100% - var(--container-wide)) / 2 + var(--gutter));
  }
}

.hero-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--radius);
  color: var(--color-white);
  transition: all var(--transition);
}

.hero-arrow:hover {
  border-color: var(--color-gold);
  background-color: var(--color-gold);
}

.hero-arrow svg {
  width: 1.125rem;
  height: 1.125rem;
}

/* Hero progress dots, bottom-right */
.hero-dots {
  position: absolute;
  z-index: 3;
  right: var(--gutter);
  bottom: clamp(2rem, 6vh, 4.5rem);
  display: flex;
  gap: 0.75rem;
}

.hero-dots .dot {
  width: 2.25rem;
  height: 3px;
  background-color: rgba(255, 255, 255, 0.3);
  transition: background-color var(--transition);
}

.hero-dots .dot.is-active {
  background-color: var(--color-gold);
}

/* ============================================================
   Brand section
   ============================================================ */
.brand-grid, .e-con.e-grid.brand-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.brand-media {
  position: relative;
}

.brand-media img {
  width: 100%;
  aspect-ratio: 4 / 3.4;
  object-fit: cover;
  border-radius: var(--radius);
}

.brand-media::after {
  content: "";
  position: absolute;
  right: -1.25rem;
  bottom: -1.25rem;
  width: 55%;
  height: 55%;
  border: 1px solid var(--color-gold);
  border-radius: var(--radius);
  z-index: -1;
}

.brand-body .section-title, .brand-body .section-title.elementor-widget-heading {
  margin-top: 1.125rem;
  margin-bottom: 1.75rem;
}

.brand-body p + p {
  margin-top: 1.25rem;
}

.brand-body .btn {
  margin-top: 2.25rem;
}

/* ============================================================
   Designer section (dark, quote style)
   ============================================================ */
.designer {
  position: relative;
  background:
    linear-gradient(rgba(13, 27, 36, 0.92), rgba(13, 27, 36, 0.92)),
    var(--designer-bg, none) center / cover no-repeat fixed;
}

.designer-quote {
  max-width: 52rem;
  margin-inline: auto;
  text-align: center;
}

.designer-quote .eyebrow {
  justify-content: center;
}

.designer-quote__lead, .designer-quote__lead .elementor-heading-title {
  margin-top: 1.75rem;
  font-size: clamp(1.375rem, 2.4vw, 2rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-white);
}

.designer-quote__body {
  margin-top: 1.75rem;
  font-size: var(--fs-lead);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.72);
}

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

.designer-quote__sign {
  margin-top: 2.5rem;
  font-size: 0.875rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
}

/* ============================================================
   Products section
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 2.5vw, 2.5rem);
}

.product-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
  transform: translateY(-0.375rem);
  box-shadow: var(--shadow-card);
}

.product-card__media {
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .product-card__media img {
  transform: scale(1.06);
}

.product-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.75rem;
}

.product-card__index {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-gold);
}

.product-card__title {
  margin-top: 0.625rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.35;
}

.product-card__text {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  flex: 1;
}

.product-card .link-more {
  margin-top: 1.5rem;
}

/* Card footer: View Details on the left, Configure Now on the right */
.product-card__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.product-card__actions .link-more {
  margin-top: 0;
  flex-shrink: 0;
}

.product-card__configure {
  flex-shrink: 0;
  gap: 0.375rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
}

/* ============================================================
   Use cases section
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 2.5vw, 2.5rem);
}

.case-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 3 / 3.6;
  background-color: var(--color-ink);
}

.case-card__media,
.case-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card__media img {
  transition: transform 0.7s ease;
}

.case-card:hover .case-card__media img {
  transform: scale(1.07);
}

.case-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(13, 27, 36, 0.05) 30%,
    rgba(13, 27, 36, 0.82) 100%
  );
  transition: background var(--transition);
}

.case-card:hover .case-card__media::after {
  background: linear-gradient(
    180deg,
    rgba(13, 27, 36, 0.15) 20%,
    rgba(13, 27, 36, 0.9) 100%
  );
}

.case-card__body {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 2;
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  color: var(--color-white);
}

.case-card__subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.case-card__title {
  margin-top: 0.5rem;
  font-size: clamp(1.375rem, 2vw, 1.75rem);
  font-weight: 700;
  line-height: 1.25;
}

.case-card__text {
  margin-top: 0.625rem;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.78);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, opacity 0.45s ease, margin 0.45s ease;
}

.case-card:hover .case-card__text {
  max-height: 8rem;
  opacity: 1;
}

/* ============================================================
   Inquiries section (latest customer Q&A)
   ============================================================ */
.inquiry-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 2.5vw, 2.25rem);
}

.inquiry-card {
  display: flex;
  gap: 1.5rem;
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition),
    border-color var(--transition);
}

.inquiry-card:hover {
  transform: translateY(-0.25rem);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-card);
}

.inquiry-card__mark {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--color-gold);
  border-radius: 50%;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gold);
}

.inquiry-card__meta {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.inquiry-card__tag {
  padding: 0.2rem 0.75rem;
  background-color: var(--color-gold-soft);
  border-radius: 1rem;
  font-weight: 600;
  color: var(--color-gold-dark);
}

.inquiry-card__date {
  color: var(--color-muted);
}

.inquiry-card__question {
  margin-top: 0.75rem;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-ink);
  transition: color var(--transition);
}

.inquiry-card:hover .inquiry-card__question {
  color: var(--color-gold-dark);
}

.inquiry-card__answer {
  margin-top: 0.625rem;
  font-size: 0.9375rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   Contact section
   ============================================================ */
.e-con.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr !important;
  gap: clamp(2.5rem, 6vw, 6rem);
}

.contact-info .section-title {
  margin-top: 1.125rem;
}

.contact-info > p {
  margin-top: 1.25rem;
  max-width: 30rem;
}

.contact-list {
  margin-top: 2.25rem;
  display: grid;
  gap: 1.5rem;
}

.contact-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-list .label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.25rem;
}

.contact-list .value {
  color: var(--color-ink);
  font-weight: 600;
}

.e-con-full.e-flex.contact-form {
  display: grid;
  gap: 1.25rem;
  padding: clamp(1.75rem, 3vw, 2.75rem);
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-field label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink);
}

.form-field label .req {
  color: var(--color-gold-dark);
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-bg-alt);
  color: var(--color-ink);
  transition: border-color var(--transition), background-color var(--transition);
}

.form-field select {
  cursor: pointer;
}

/* Unselected required <select> shows its placeholder option in muted gray */
.form-field select:invalid {
  color: var(--color-muted);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-gold);
  background-color: var(--color-white);
}

.form-field textarea {
  min-height: 8.5rem;
  resize: vertical;
}

.contact-form .btn {
  justify-self: start;
}

.form-note {
  font-size: 0.875rem;
  color: var(--color-gold-dark);
  display: none;
}

.form-note.is-visible {
  display: block;
}

.form-note--error {
  color: #d63638;
}

.form-field input.has-error,
.form-field textarea.has-error,
.form-field select.has-error {
  border-color: #d63638;
  background-color: var(--color-white);
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background-color: var(--color-ink);
  color: rgba(255, 255, 255, 0.65);
  padding: clamp(3rem, 6vw, 5rem) 0 2rem;
}

.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2.5rem;
  flex-wrap: wrap;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand img {
  height: 1.75rem;
  width: auto;
  margin-bottom: 1rem;
}

.footer-brand p {
  max-width: 22rem;
  font-size: 0.9375rem;
}

.footer-nav {
  display: flex;
  gap: clamp(2rem, 5vw, 5rem);
  flex-wrap: wrap;
}

.footer-nav h4 {
  margin-bottom: 1rem;
  font-size: 0.8125rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.footer-nav li + li {
  margin-top: 0.625rem;
}

.footer-nav a {
  font-size: 0.9375rem;
}

.footer-nav a:hover {
  color: var(--color-gold);
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1.75rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background-color: var(--color-white);
  color: var(--color-ink);
  transition: background-color var(--transition), color var(--transition),
    transform var(--transition);
}

.footer-social a:hover {
  background-color: var(--color-gold);
  color: var(--color-white);
  transform: translateY(-0.125rem);
}

.footer-social svg {
  width: 1.125rem;
  height: 1.125rem;
  fill: currentColor;
}

.footer-social a img {
  width: 1.125rem;
  height: 1.125rem;
  object-fit: contain;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 2rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.45);
}

/* ============================================================
   Product detail page
   ============================================================ */
.detail-hero {
  padding: calc(var(--header-h) + clamp(3rem, 7vw, 6rem)) 0 clamp(3rem, 6vw, 5rem);
  background-color: var(--color-ink);
  color: var(--color-white);
}

.detail-hero .section-title {
  color: var(--color-white);
  margin-top: 1.125rem;
}

/* ============================================================
   Back to top button
   ============================================================ */
.back-to-top {
  position: fixed;
  right: clamp(1.25rem, 3vw, 2.5rem);
  bottom: clamp(1.25rem, 3vw, 2.5rem);
  z-index: calc(var(--z-header) - 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-gold);
  border-radius: 50%;
  color: var(--color-white);
  box-shadow: 0 0.75rem 1.75rem rgba(13, 27, 36, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.75rem);
  transition: opacity var(--transition), transform var(--transition),
    visibility var(--transition), background-color var(--transition);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.back-to-top:hover {
  background-color: var(--color-gold-dark);
}

.back-to-top svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ============================================================
   Responsive
   ============================================================ */

/* --- >= 1920px : 2K / 4K --- */
@media (min-width: 120rem) {
  :root {
    --fs-body: 1.125rem;
    --fs-lead: 1.25rem;
    --header-h: 6.5rem;
  }

  .container, .e-con.container {
    max-width: var(--container-wide);
  }

  .site-logo img {
    height: 2.5rem;
  }

  .hero-slide__content {
    max-width: 56rem;
  }
}

/* --- 1024px — 1280px : tablet landscape / small laptop --- */
@media (max-width: 80rem) {
  .main-nav .nav-list {
    gap: 1.25rem;
  }

  .main-nav a {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
  }

  .main-nav .sub-menu a {
    font-size: 0.8125rem;
    letter-spacing: 0.06em;
  }

  .header-cta {
    padding: 0.625rem 1.125rem;
  }
}

/* --- 768px — 1024px : tablet portrait --- */
@media (min-width: 64rem) {
    .nav-list .nav-item:last-child{ display:none;}
}


@media (max-width: 64rem) {
  .main-nav,
  .header-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  /* Mobile / tablet drawer navigation */
  .main-nav.is-open {
    position: fixed;
    inset: 0;
    z-index: var(--z-nav-mobile);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    background-color: rgba(13, 27, 36, 0.98);
  }

  .main-nav.is-open .nav-list {
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    padding: 2rem 0;
  }

  .main-nav.is-open a {
    font-size: 1.125rem;
    letter-spacing: 0.24em;
  }

  /* Sub-menus stay expanded inside the drawer */
  .main-nav.is-open .nav-item {
    text-align: center;
  }

  .main-nav.is-open .sub-menu {
    position: static;
    min-width: 0;
    margin-top: 0.75rem;
    padding: 0;
    background: none;
    border: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .main-nav.is-open .sub-menu a {
    padding: 0.375rem 0;
    font-size: 0.9375rem;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.6);
  }

  .main-nav.is-open .caret {
    display: none;
  }

  .brand-grid, .e-con.e-grid.brand-grid, 
  .e-con.contact-grid {
    grid-template-columns: 1fr !important;
  }

  .brand-media {
    max-width: 40rem;
  }

  .product-grid,
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin-inline: auto;
  }

  .case-card:last-child {
    grid-column: 1 / -1;
    aspect-ratio: 16 / 9;
  }
  
  
  .hero-slide__title{ font-size:1.3rem;}
  .hero-slide__text{ font-size:1rem;}
  
}

/* --- < 768px : mobile --- */
@media (max-width: 48rem) {
  :root {
    --header-h: 4.5rem;
    --gutter: 1.25rem;
  }

  .site-logo img {
    height: 1.5rem;
  }

  .hero {
    min-height: 34rem;
    height: 92vh;
  }

  .hero-slide__media::after {
    background: linear-gradient(
      180deg,
      rgba(13, 27, 36, 0.6) 0%,
      rgba(13, 27, 36, 0.82) 100%
    );
  }

  .hero-slide__eyebrow {
    letter-spacing: 0.28em;
  }

  .hero-slide__actions {
    gap: 1rem;
  }

  .hero-controls {
    bottom: 1.5rem;
  }

  .hero-arrow {
    width: 2.5rem;
    height: 2.5rem;
  }

  .hero-dots {
    display: none;
  }

  .product-grid,
  .case-grid,
  .inquiry-grid {
    grid-template-columns: 1fr;
  }

  .inquiry-card {
    gap: 1rem;
  }

  .inquiry-card__mark {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1rem;
  }

  .product-card:last-child {
    max-width: none;
  }

  .case-card:last-child {
    aspect-ratio: 3 / 3.6;
  }

  .case-card__text {
    max-height: none;
    opacity: 1;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .designer {
    background-attachment: scroll; /* fixed attachment is unreliable on iOS */
  }

  .footer-top {
    flex-direction: column;
  }

  .footer-right {
    align-items: flex-start;
  }
}