/* ===================================================
   LuxLight — Delta Light inspired design
   Monochromatic luxury, architectural lighting aesthetic
   =================================================== */

/* --- Custom Properties --- */
:root {
  --color-black: #000000;
  --color-white: #ffffff;
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text: #000000;
  --color-text-muted: #606971;
  --color-gray-100: #eef2f4;
  --color-gray-200: #d8dcdf;
  --color-gray-300: #c0c5c9;
  --color-gray-400: #a7aeb4;
  --color-gray-500: #8e979f;
  --color-gray-600: #75808a;
  --color-gray-700: #606971;
  --color-gray-800: #464c53;
  --color-gray-900: #33383d;

  --font-body: "Inter", Helvetica, Arial, sans-serif;
  --font-heading: "Montserrat", Helvetica, Arial, sans-serif;

  --font-size-xs: clamp(0.69rem, 0.5vw + 0.5rem, 0.75rem);
  --font-size-sm: clamp(0.75rem, 0.5vw + 0.6rem, 0.875rem);
  --font-size-base: clamp(0.94rem, 0.3vw + 0.88rem, 1rem);
  --font-size-lead: clamp(1.06rem, 0.4vw + 0.96rem, 1.19rem);
  --font-size-h4: clamp(0.94rem, 0.5vw + 0.82rem, 1.25rem);
  --font-size-h3: clamp(1rem, 1vw + 0.75rem, 1.63rem);
  --font-size-h2: clamp(1.38rem, 1.2vw + 1rem, 2rem);
  --font-size-h1: clamp(1.5rem, 3vw + 0.75rem, 3rem);

  --spacing-1: 4px;
  --spacing-2: 8px;
  --spacing-3: 12px;
  --spacing-4: 16px;
  --spacing-5: 24px;
  --spacing-6: 32px;
  --spacing-7: 48px;
  --spacing-8: 64px;
  --spacing-9: 96px;
  --spacing-10: 144px;

  --container-max: 1324px;
  --container-padding: clamp(16px, 4vw, 64px);
  --transition: 0.3s ease;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

button {
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  font-family: inherit;
}

/* --- Container --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-inline: var(--container-padding);
}

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--spacing-6) var(--container-padding);
  color: var(--color-white);
  pointer-events: none;
  transition: color 0.5s ease, background 0.5s ease;
}

.header.header--scrolled {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  padding: var(--spacing-4) var(--container-padding);
}

.header > * {
  pointer-events: auto;
}

.logo {
  display: block;
  width: clamp(152px, 15vw, 240px);
  color: inherit;
  transition: opacity var(--transition);
}

.logo:hover { opacity: 0.7; }

.logo svg {
  width: 100%;
  height: auto;
}

/* Desktop Nav */
.nav-desktop {
  display: none;
  gap: var(--spacing-7);
  padding-top: var(--spacing-2);
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
    align-items: flex-start;
  }
}

.nav-primary {
  display: flex;
  gap: var(--spacing-6);
}

.nav-secondary {
  display: flex;
  gap: var(--spacing-5);
}

.nav-link {
  font-family: var(--font-heading);
  transition: opacity var(--transition);
  position: relative;
}

.nav-link:hover { opacity: 0.6; }

.nav-link--large {
  font-size: clamp(1.25rem, 1vw + 1rem, 1.5rem);
  font-weight: 700;
}

.nav-link--small {
  font-size: var(--font-size-base);
  font-weight: 500;
  padding-top: 6px;
}

.nav-link--small::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width var(--transition);
}

.nav-link--small:hover::after { width: 100%; }

/* Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  z-index: 110;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  background: currentColor;
  transition: transform 0.4s ease, opacity 0.3s ease;
}

.menu-toggle.active span:first-child {
  transform: translateY(4px) rotate(45deg);
}

.menu-toggle.active span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .menu-toggle { display: none; }
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 105;
  background: var(--color-black);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu__inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-6);
  text-align: center;
}

.mobile-menu__link {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-white);
  transition: opacity var(--transition);
}

.mobile-menu__link:hover { opacity: 0.6; }

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-9) var(--container-padding) var(--spacing-8);
  background: var(--color-black);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    url("images/hero-main.jpg");
  background-size: cover;
  background-position: center;
  opacity: 0.4;
  animation: heroFadeIn 2s ease-out forwards;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    35% 45% at 20% 16%,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.85) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h1);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-5);
  animation: fadeUp 1s ease-out 0.5s both;
}

.hero__subtitle {
  font-size: var(--font-size-lead);
  color: var(--color-gray-400);
  font-weight: 300;
  margin-bottom: var(--spacing-7);
  animation: fadeUp 1s ease-out 0.8s both;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-3);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--spacing-4) var(--spacing-6);
  border: 1px solid;
  transition: all var(--transition);
  animation: fadeUp 1s ease-out 1.1s both;
}

.btn--light {
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.3);
  background: transparent;
}

.btn--light:hover {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

.btn--dark {
  color: var(--color-black);
  border-color: var(--color-black);
  background: transparent;
}

.btn--dark:hover {
  background: var(--color-black);
  color: var(--color-white);
}

.btn__arrow {
  transition: transform var(--transition);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* --- Section --- */
.section {
  padding: var(--spacing-10) 0;
}

.section__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-8);
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h2);
  font-weight: 700;
  color: var(--color-text);
}

.section__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.section__link:hover { color: var(--color-text); }
.section__link svg { transition: transform var(--transition); }
.section__link:hover svg { transform: translateX(4px); }

/* --- Masonry Grid --- */
.masonry {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-9);
}

@media (min-width: 768px) {
  .masonry {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
    row-gap: var(--spacing-10);
  }

  .masonry .card:nth-child(even) {
    margin-top: var(--spacing-9);
  }
}

/* --- Card --- */
.card {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.card.visible {
  opacity: 1;
  transform: translateY(0);
}

.card__image {
  overflow: hidden;
  margin-bottom: var(--spacing-5);
}

.card__image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 1.2s ease, transform 0.6s ease;
}

.card.visible .card__image img {
  filter: grayscale(0%);
}

.card__image:hover img {
  transform: scale(1.03);
}

.card--large .card__image img {
  aspect-ratio: 16 / 9;
}

@media (min-width: 768px) {
  .card--large {
    grid-column: span 2;
  }
}

.card__body {
  padding: 0 var(--spacing-4);
}

.card__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-3);
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: var(--spacing-4);
  color: var(--color-text);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.card__link:hover { color: var(--color-text); }
.card__link svg { transition: transform var(--transition); }
.card__link:hover svg { transform: translateX(4px); }

/* --- Products Grid --- */
.section--products {
  background: var(--color-surface);
  color: var(--color-black);
  padding: var(--spacing-9) 0;
}

.section--products .section__title { color: var(--color-black); }
.section--products .section__link { color: var(--color-gray-600); }
.section--products .section__link:hover { color: var(--color-black); }

.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-5);
}

@media (min-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
  }
}

/* --- Product Card --- */
.product-card {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.product-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.product-card__image {
  position: relative;
  overflow: hidden;
  margin-bottom: var(--spacing-4);
}

.product-card__image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card__image img {
  transform: scale(1.05);
}

.product-card__pin {
  position: absolute;
  top: var(--spacing-3);
  right: var(--spacing-3);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  border-radius: 50%;
  color: var(--color-gray-600);
  opacity: 0;
  transition: opacity var(--transition), color var(--transition);
}

.product-card:hover .product-card__pin { opacity: 1; }
.product-card__pin:hover { color: var(--color-black); }

.product-card__body {
  padding: 0 var(--spacing-2);
}

.product-card__name {
  font-family: var(--font-heading);
  font-size: var(--font-size-h4);
  font-weight: 500;
  color: var(--color-black);
  margin-bottom: var(--spacing-1);
}

.product-card__count {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* --- About Section --- */
.section--about {
  background: var(--color-gray-100);
  color: var(--color-text);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
  align-items: center;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about__lead {
  font-size: var(--font-size-lead);
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-gray-700);
  margin-top: var(--spacing-6);
  margin-bottom: var(--spacing-5);
}

.about__text {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-7);
}

.about__stats {
  display: flex;
  gap: var(--spacing-8);
}

.stat { display: flex; flex-direction: column; }

.stat__number {
  font-family: var(--font-heading);
  font-size: var(--font-size-h2);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--spacing-2);
}

.stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.about-grid__image img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

/* --- Footer --- */
.footer {
  background: var(--color-black);
  color: var(--color-white);
  border-top: 1px solid var(--color-gray-900);
  padding: var(--spacing-9) 0 var(--spacing-6);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-7);
  margin-bottom: var(--spacing-9);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-5);
  color: var(--color-white);
}

.footer__list li { margin-bottom: var(--spacing-3); }

.footer__list a {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  transition: color var(--transition);
}

.footer__list a:hover { color: var(--color-white); }

.footer__text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-5);
}

.footer__subscribe {
  display: flex;
  border-bottom: 1px solid var(--color-gray-800);
  margin-bottom: var(--spacing-6);
}

.footer__input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  padding: var(--spacing-3) 0;
  outline: none;
}

.footer__input::placeholder {
  color: var(--color-gray-600);
}

.footer__submit {
  color: var(--color-gray-500);
  padding: var(--spacing-3);
  transition: color var(--transition);
}

.footer__submit:hover { color: var(--color-white); }

.footer__social {
  display: flex;
  gap: var(--spacing-5);
}

.footer__social a {
  color: var(--color-gray-500);
  transition: color var(--transition);
}

.footer__social a:hover { color: var(--color-white); }

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--color-gray-900);
  font-size: var(--font-size-xs);
  color: var(--color-gray-600);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-5);
}

.footer__legal a {
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.footer__legal a:hover { color: var(--color-white); }

/* --- Scroll to top --- */
.scroll-top {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  color: var(--color-black);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  z-index: 50;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--color-gray-200);
}

/* --- Card excerpt --- */
.card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-4);
}

/* --- Flyout Panels --- */
.flyout {
  position: fixed;
  inset: 0;
  z-index: 200;
  pointer-events: none;
  visibility: hidden;
}

.flyout.active {
  pointer-events: auto;
  visibility: visible;
}

.flyout__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.flyout.active .flyout__backdrop { opacity: 1; }

.flyout__panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  max-width: 860px;
  height: 100%;
  background: var(--color-white);
  color: var(--color-text);
  transform: translateX(-100%);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.flyout__panel--narrow { max-width: 640px; }

.flyout__panel--search {
  max-width: 100%;
  left: 0;
  right: 0;
  height: auto;
  max-height: 80vh;
  transform: translateY(-100%);
}

.flyout.active .flyout__panel { transform: translate(0); }

.flyout__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-6) var(--spacing-7);
  border-bottom: 1px solid var(--color-gray-200);
  flex-shrink: 0;
}

.flyout__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: 700;
}

.flyout__close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.flyout__close:hover { color: var(--color-text); }

.flyout__body {
  padding: var(--spacing-7);
  flex: 1;
}

.flyout__columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-7);
}

@media (min-width: 640px) {
  .flyout__columns {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .flyout__columns {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.flyout__nav-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-4);
}

.flyout__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.flyout__list a {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  transition: color var(--transition);
  display: block;
  padding: var(--spacing-1) 0;
}

.flyout__list a:hover { color: var(--color-text); }

.flyout__list--inline {
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--spacing-5);
}

/* Flyout: Featured card */
.flyout__col--featured { display: none; }

@media (min-width: 768px) {
  .flyout__col--featured { display: block; }
}

.flyout__featured {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.flyout__featured img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.flyout__featured-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-500);
}

.flyout__featured-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h4);
  font-weight: 500;
}

/* Flyout: Product grid */
.flyout__product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-5);
}

@media (min-width: 640px) {
  .flyout__product-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
  .flyout__product-grid { grid-template-columns: repeat(4, 1fr); }
}

.flyout__product-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  transition: opacity var(--transition);
}

.flyout__product-item:hover { opacity: 0.7; }

.flyout__product-img {
  overflow: hidden;
}

.flyout__product-img img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.flyout__product-item:hover .flyout__product-img img {
  transform: scale(1.05);
}

.flyout__product-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.flyout__product-count {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

.flyout__product-footer {
  margin-top: var(--spacing-7);
  padding-top: var(--spacing-5);
  border-top: 1px solid var(--color-gray-200);
}

.flyout__all-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.flyout__all-link:hover { color: var(--color-text); }
.flyout__all-link svg { transition: transform var(--transition); }
.flyout__all-link:hover svg { transform: translateX(4px); }

/* Flyout: Search */
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  flex: 1;
  color: var(--color-gray-500);
}

.search-bar__input {
  flex: 1;
  border: none;
  background: none;
  font-family: var(--font-body);
  font-size: var(--font-size-h3);
  color: var(--color-text);
  outline: none;
}

.search-bar__input::placeholder { color: var(--color-gray-400); }

.search-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
}

.search-tag {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  border: 1px solid var(--color-gray-200);
  border-radius: 20px;
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  transition: all var(--transition);
}

.search-tag:hover {
  border-color: var(--color-text);
  color: var(--color-text);
}

/* --- Mobile Menu: Nested --- */
.mobile-menu__section { width: 100%; }

.mobile-menu__link--expandable {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  background: none;
  border: none;
  width: 100%;
}

.mobile-menu__link--expandable svg {
  transition: transform 0.3s ease;
}

.mobile-menu__link--expandable.active svg {
  transform: rotate(180deg);
}

.mobile-menu__sub {
  display: none;
  flex-direction: column;
  gap: var(--spacing-3);
  padding: var(--spacing-4) 0;
}

.mobile-menu__sub.active {
  display: flex;
}

.mobile-menu__sub a {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-gray-400);
  transition: color var(--transition);
}

.mobile-menu__sub a:hover { color: var(--color-white); }

.mobile-menu__all {
  font-weight: 500;
  text-transform: uppercase;
  font-size: var(--font-size-sm) !important;
  letter-spacing: 0.05em;
  margin-top: var(--spacing-2);
  color: var(--color-gray-500) !important;
}

/* --- Nav icon links --- */
.nav-link--icon {
  display: inline-flex;
  align-items: center;
  padding-top: 6px;
}

/* ===================================================
   INNER PAGES
   =================================================== */

/* --- Page light body --- */
.page--light { background: var(--color-white); color: var(--color-text); }

/* --- Static header (inner pages) --- */
.header--static {
  position: sticky;
  mix-blend-mode: normal;
}

.nav-link--active { opacity: 0.5; }

/* --- Breadcrumb --- */
.breadcrumb {
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--color-gray-100);
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-top: 0;
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-gray-500);
  transition: color var(--transition);
}

.breadcrumb a:hover { color: var(--color-text); }

.breadcrumb__sep { color: var(--color-gray-300); }
.breadcrumb__current { color: var(--color-text); }

/* ===================================================
   CATALOG PAGE
   =================================================== */
.catalog { padding: var(--spacing-7) 0 var(--spacing-9); }

.catalog__header {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-7);
}

.catalog__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h1);
  font-weight: 700;
}

.catalog__count {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.catalog__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-7);
}

@media (min-width: 768px) {
  .catalog__layout {
    grid-template-columns: 260px 1fr;
  }
}

/* --- Filters --- */
.catalog__sidebar {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.filter__group {
  border-bottom: 1px solid var(--color-gray-100);
}

.filter__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--spacing-4) 0;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
}

.filter__header svg {
  transition: transform 0.3s ease;
  color: var(--color-gray-400);
}

.filter__group.collapsed .filter__header svg {
  transform: rotate(-90deg);
}

.filter__body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  padding-bottom: var(--spacing-4);
}

.filter__group.collapsed .filter__body { display: none; }

.filter__option {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  cursor: pointer;
  padding: var(--spacing-1) 0;
}

.filter__option input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-text);
  cursor: pointer;
}

.filter__option em {
  font-style: normal;
  color: var(--color-gray-400);
  font-size: var(--font-size-xs);
}

/* --- Catalog Toolbar --- */
.catalog__toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
  padding-bottom: var(--spacing-4);
  border-bottom: 1px solid var(--color-gray-100);
}

.catalog__sort {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.catalog__sort select {
  border: none;
  background: none;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  outline: none;
}

.catalog__view {
  display: flex;
  gap: var(--spacing-2);
}

.catalog__view-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  transition: color var(--transition);
}

.catalog__view-btn:hover,
.catalog__view-btn.active { color: var(--color-text); }

/* --- Catalog Grid --- */
.catalog__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-5);
}

@media (min-width: 640px) {
  .catalog__grid { grid-template-columns: repeat(3, 1fr); }
}

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

@media (min-width: 640px) {
  .catalog__grid--compact { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
  .catalog__grid--compact { grid-template-columns: repeat(4, 1fr); }
}

/* --- Catalog Card --- */
.catalog-card {
  display: flex;
  flex-direction: column;
  transition: opacity var(--transition);
}

.catalog-card:hover { opacity: 0.8; }

.catalog-card__image {
  overflow: hidden;
  margin-bottom: var(--spacing-3);
  background: var(--color-gray-100);
}

.catalog-card__image img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.catalog-card:hover .catalog-card__image img {
  transform: scale(1.04);
}

.catalog-card__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.catalog-card__name {
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: 500;
}

.catalog-card__series {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

.catalog-card__spec {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
}

/* --- Pagination --- */
.catalog__pagination {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-8);
  padding-top: var(--spacing-5);
  border-top: 1px solid var(--color-gray-100);
  font-size: var(--font-size-sm);
}

.pagination__current {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-text);
  color: var(--color-white);
  font-weight: 500;
}

.pagination__link {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.pagination__link:hover { color: var(--color-text); }

.pagination__dots { color: var(--color-gray-400); }

.pagination__next {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-left: auto;
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition);
}

.pagination__next:hover { color: var(--color-text); }

/* ===================================================
   PRODUCT PAGE
   =================================================== */
.product { padding: var(--spacing-7) 0 var(--spacing-9); }

.product__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-7);
  margin-bottom: var(--spacing-9);
}

@media (min-width: 768px) {
  .product__layout {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
  }
}

/* Gallery */
.gallery__main {
  margin-bottom: var(--spacing-4);
  background: var(--color-gray-100);
  overflow: hidden;
}

.gallery__main img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.gallery__thumbs {
  display: flex;
  gap: var(--spacing-3);
}

.gallery__thumb {
  width: 72px;
  height: 72px;
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition);
  padding: 0;
}

.gallery__thumb.active { border-color: var(--color-text); }
.gallery__thumb:hover { border-color: var(--color-gray-400); }

.gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Product Info */
.product__meta {
  display: flex;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-3);
}

.product__series {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-500);
  font-weight: 500;
}

.product__sku {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
}

.product__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h1);
  font-weight: 700;
  margin-bottom: var(--spacing-3);
}

.product__subtitle {
  font-size: var(--font-size-lead);
  color: var(--color-gray-600);
  font-weight: 300;
  margin-bottom: var(--spacing-6);
}

/* Highlights */
.product__highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-4);
  padding: var(--spacing-5);
  background: var(--color-gray-100);
  margin-bottom: var(--spacing-6);
}

.highlight { display: flex; flex-direction: column; text-align: center; }

.highlight__value {
  font-family: var(--font-heading);
  font-size: var(--font-size-h4);
  font-weight: 700;
}

.highlight__label {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

/* Configurator */
.product__config {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-5);
  margin-bottom: var(--spacing-6);
}

.config__label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-3);
}

.config__swatches {
  display: flex;
  gap: var(--spacing-3);
}

.swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
}

.swatch:hover { transform: scale(1.1); }
.swatch--active { border-color: var(--color-text) !important; }

.config__options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-2);
}

.config__opt {
  padding: var(--spacing-2) var(--spacing-4);
  border: 1px solid var(--color-gray-200);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-gray-700);
  transition: all var(--transition);
  cursor: pointer;
}

.config__opt:hover { border-color: var(--color-gray-500); }

.config__opt--active {
  background: var(--color-text);
  color: var(--color-white);
  border-color: var(--color-text);
}

/* Product Actions */
.product__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.btn--full { width: 100%; justify-content: center; }

.btn--outline {
  color: var(--color-text);
  border-color: var(--color-gray-300);
  background: transparent;
}

.btn--outline:hover {
  border-color: var(--color-text);
}

.product__download-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  transition: color var(--transition);
  padding: var(--spacing-2) 0;
}

.product__download-link:hover { color: var(--color-text); }

/* --- Tabs --- */
.tabs {
  border-top: 1px solid var(--color-gray-200);
}

.tabs__nav {
  display: flex;
  gap: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-gray-200);
}

.tabs__btn {
  padding: var(--spacing-4) var(--spacing-5);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-gray-500);
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.tabs__btn:hover { color: var(--color-text); }

.tabs__btn.active {
  color: var(--color-text);
  border-bottom-color: var(--color-text);
}

.tabs__panel {
  display: none;
  padding: var(--spacing-6) 0;
}

.tabs__panel.active { display: block; }

/* Spec Table */
.spec-table { width: 100%; border-collapse: collapse; }

.spec-table td {
  padding: var(--spacing-3) var(--spacing-4);
  border-bottom: 1px solid var(--color-gray-100);
  font-size: var(--font-size-sm);
  vertical-align: top;
}

.spec-table td:first-child {
  color: var(--color-gray-500);
  width: 40%;
  font-weight: 500;
}

/* Downloads Grid */
.downloads-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.download-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  border: 1px solid var(--color-gray-100);
  transition: border-color var(--transition);
}

.download-item:hover { border-color: var(--color-gray-300); }

.download-item svg { flex-shrink: 0; color: var(--color-gray-400); }

.download-item strong {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.download-item span {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

/* Related Projects (in tabs) */
.related-projects {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-5);
}

@media (min-width: 640px) {
  .related-projects { grid-template-columns: repeat(2, 1fr); }
}

.related-project {
  display: flex;
  gap: var(--spacing-4);
  align-items: center;
  padding: var(--spacing-3);
  border: 1px solid var(--color-gray-100);
  transition: border-color var(--transition);
}

.related-project:hover { border-color: var(--color-gray-300); }

.related-project img {
  width: 100px;
  height: 70px;
  object-fit: cover;
  flex-shrink: 0;
}

.related-project strong {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: 2px;
}

.related-project span {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

/* ===================================================
   PROJECT PAGE
   =================================================== */

/* Project Hero */
.project-hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.project-hero__bg {
  position: absolute;
  inset: 0;
}

.project-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
}

.project-hero__content {
  position: relative;
  z-index: 2;
  padding: var(--spacing-8) var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
  color: var(--color-white);
}

.project-hero__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-300);
  margin-bottom: var(--spacing-3);
}

.project-hero__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-h1);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-4);
}

.project-hero__meta {
  display: flex;
  gap: var(--spacing-5);
  font-size: var(--font-size-sm);
  color: var(--color-gray-300);
}

/* Project Content */
.project-content {
  background: var(--color-white);
  color: var(--color-text);
  padding: var(--spacing-9) 0;
}

.project__intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-7);
  margin-bottom: var(--spacing-9);
}

@media (min-width: 768px) {
  .project__intro { grid-template-columns: 1fr 1fr; }
}

.project__heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-h2);
  font-weight: 700;
  margin-bottom: var(--spacing-4);
}

.project__lead {
  font-size: var(--font-size-lead);
  font-weight: 300;
  color: var(--color-gray-700);
  line-height: 1.7;
}

.project__intro-col p {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-4);
  line-height: 1.7;
}

/* Project Figures */
.project__figure {
  margin-bottom: var(--spacing-7);
}

.project__figure--full {
  margin-bottom: var(--spacing-9);
}

.project__figure img {
  width: 100%;
  object-fit: cover;
}

.project__figure--full img {
  aspect-ratio: 16 / 7;
}

.project__figure figcaption {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-top: var(--spacing-3);
}

.project__image-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-5);
  margin-bottom: var(--spacing-7);
}

@media (min-width: 768px) {
  .project__image-grid { grid-template-columns: 1fr 1fr; }
}

/* Project Text */
.project__text-block {
  max-width: 680px;
  margin-bottom: var(--spacing-7);
}

.project__subheading {
  font-family: var(--font-heading);
  font-size: var(--font-size-h3);
  font-weight: 600;
  margin-bottom: var(--spacing-4);
}

.project__text-block p {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* Project Products */
.project__products {
  margin-bottom: var(--spacing-9);
  padding-top: var(--spacing-7);
  border-top: 1px solid var(--color-gray-200);
}

.project__products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-5);
  margin-top: var(--spacing-5);
}

@media (min-width: 640px) {
  .project__products-grid { grid-template-columns: repeat(4, 1fr); }
}

.project__product-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
  transition: opacity var(--transition);
}

.project__product-card:hover { opacity: 0.7; }

.project__product-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: var(--color-gray-100);
}

.project__product-card strong {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.project__product-card span {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

/* Project Details */
.project__details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-4) var(--spacing-7);
  padding: var(--spacing-6);
  background: var(--color-gray-100);
}

@media (min-width: 640px) {
  .project__details { grid-template-columns: repeat(3, 1fr); }
}

.project__detail-label {
  display: block;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-500);
  margin-bottom: 2px;
}

.project__detail-value {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* More projects section */
.section--more-projects {
  background: var(--color-white);
  color: var(--color-text);
}

/* --- Animations --- */
@keyframes heroFadeIn {
  from { opacity: 0; transform: scale(1.05); }
  to { opacity: 0.4; transform: scale(1); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Selection --- */
::selection {
  background: rgba(0, 0, 0, 0.12);
  color: var(--color-text);
}

.hero ::selection {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}

.footer ::selection {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
}