/* ========================================
   Twin Screw Extruder Parts - Multi-Language Site
   Style: Industrial / Rigorous / Engineering
   ======================================== */

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

:root {
  --c-bg:        #f0f2f4;   /* cool industrial white */
  --c-bg-alt:    #e4e7eb;   /* light steel grey */
  --c-bg-dark:   #151b21;   /* deep charcoal / gunmetal */
  --c-text:      #1a1e24;   /* dark slate text */
  --c-text-soft: #4a5560;   /* steel grey text */
  --c-accent:    #2563a8;   /* industrial blue */
  --c-accent-dk: #1a4a7a;   /* darker industrial blue */
  --c-line:      #c5ccd4;   /* cool grey border */
  --c-red:       #c23b2b;   /* safety / industrial red */
  --c-steel:     #5a646e;   /* steel grey for machinery */

  --f-serif:  'Inter', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --f-sans:   'Inter', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  --f-mono:   'Roboto Mono', 'Courier New', monospace;

  --w-max:    1200px;
  --radius:   0px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--f-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  overflow-x: hidden;
  /* subtle industrial texture */
  background-image:
    radial-gradient(ellipse at top, rgba(37,99,168,0.03), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(90,100,110,0.02), transparent 60%);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--f-sans);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.8rem); }

p { margin-bottom: 1rem; }

a {
  color: var(--c-accent-dk);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover { color: var(--c-red); }

/* ---------- Layout Helpers ---------- */
.container {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 5rem 0; }
.section--alt { background: var(--c-bg-alt); }

.text-center { text-align: center; }

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(240, 242, 244, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line);
  transition: padding 0.3s ease;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  max-width: var(--w-max);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-sans);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: 0.03em;
}

.logo__icon {
  width: 36px; height: 36px;
  flex-shrink: 0;
}

/* raster logo (transparent PNG) */
.logo__img {
  display: block;
  height: 34px;
  width: auto;
  max-width: 100%;
}

@media (max-width: 480px) {
  .logo__img { height: 27px; }
}

.logo__sub {
  font-family: var(--f-sans);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--c-text-soft);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__link {
  font-family: var(--f-sans);
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--c-text);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  padding: 4px 0;
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--c-accent);
  transition: width 0.3s ease;
}
.nav__link:hover::after,
.nav__link--active::after { width: 100%; }

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  border-left: 1px solid var(--c-line);
  padding-left: 20px;
  margin-left: 8px;
}

.lang-switcher__btn {
  background: none;
  border: 1px solid transparent;
  padding: 4px 8px;
  font-size: 0.72rem;
  font-family: var(--f-sans);
  color: var(--c-text-soft);
  cursor: pointer;
  border-radius: var(--radius);
  transition: all 0.25s ease;
  letter-spacing: 0.05em;
}
.lang-switcher__btn:hover { color: var(--c-text); border-color: var(--c-line); }
.lang-switcher__btn--active {
  color: var(--c-bg);
  background: var(--c-accent);
  border-color: var(--c-accent);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--c-text);
  transition: 0.3s;
}

@media (max-width: 900px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }
  .nav--open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: var(--c-bg);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--c-line);
  }
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 92px 24px 56px;
}

/* the animation now flows below the headline instead of sitting behind it */
.hero__bg {
  position: relative;
  inset: auto;
  order: 2;
  width: 100%;
  max-width: 900px;
  min-width: 0;
  margin: 2.75rem auto 0;
  z-index: 1;
}

@media (max-width: 768px) {
  .hero { padding: 84px 18px 40px; }
  .hero__bg { margin-top: 1.75rem; }
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
  max-width: 780px;
  padding: 0 24px;
}

.hero__eyebrow {
  font-family: var(--f-sans);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-accent-dk);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-family: var(--f-sans);
  font-size: clamp(2.1rem, 4.6vw, 3.5rem);
  font-weight: 700;
  color: var(--c-text);
  margin-bottom: 1.5rem;
  line-height: 1.15;
}

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

.hero__desc {
  font-size: 1.1rem;
  color: var(--c-text-soft);
  max-width: 500px;
  margin: 0 auto 2rem;
  line-height: 1.8;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-family: var(--f-sans);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-bg);
  background: var(--c-accent);
  border: 1px solid var(--c-accent);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  cursor: pointer;
}
.hero__cta:hover {
  background: var(--c-accent-dk);
  border-color: var(--c-accent-dk);
  color: var(--c-bg);
}

/* ---------- Extruder Animation Container ---------- */
.extruder-anim {
  display: block;
  width: 100%;
  max-width: 900px;
  height: auto;
  margin: 0 auto;
  position: relative;
}

/* The diagram labels are set in SVG user units, so they shrink with the
   drawing. Step them up as the viewport narrows to keep them readable. */
#extruderAnim text { font-size: 11px; letter-spacing: 1.3px; }
@media (max-width: 900px) {
  #extruderAnim text { font-size: 14px; letter-spacing: 1.1px; }
}
@media (max-width: 700px) {
  #extruderAnim text { font-size: 18px; letter-spacing: 1px; }
  #extruderAnim line[stroke="#8b96a1"] { stroke-width: 1.6; }
}
@media (max-width: 520px) {
  #extruderAnim text { font-size: 22px; letter-spacing: 0.8px; }
}

/* ---------- Section Title ---------- */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title__eyebrow {
  font-family: var(--f-sans);
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-accent-dk);
  margin-bottom: 0.75rem;
}

.section-title__heading {
  font-family: var(--f-sans);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--c-text);
}

.section-title__heading em {
  font-style: italic;
  color: var(--c-accent);
}

.divider {
  width: 60px; height: 2px;
  background: var(--c-accent);
  margin: 1.5rem auto 0;
}

/* ---------- Cards / Grid ---------- */
.grid {
  display: grid;
  gap: 30px;
}
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 768px) {
  .grid--3, .grid--2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 2.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 24px rgba(21, 27, 33, 0.1);
}

.card__icon {
  width: 56px; height: 56px;
  margin-bottom: 1.5rem;
  color: var(--c-accent);
}

/* Industry card paired with an application photo */
.card--media { padding: 0; display: flex; flex-direction: column; }
.card--media .card__media {
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-line);
  height: 230px;
  overflow: hidden;
}
.card--media .card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s ease;
}
.card--media:hover .card__media img { transform: scale(1.03); }
.card--media .card__body { padding: 1.8rem 2.2rem 2.2rem; }
.card--media .card__title { margin-bottom: 0.7rem; }

.card__title {
  font-family: var(--f-sans);
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: var(--c-text);
}

.card__desc {
  font-size: 0.95rem;
  color: var(--c-text-soft);
  line-height: 1.7;
}

.card__link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent-dk);
  border-bottom: 1px solid var(--c-accent);
  padding-bottom: 2px;
}

/* ---------- Stats Strip ---------- */
.stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
}

.stat__num {
  font-family: var(--f-sans);
  font-size: 3rem;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1;
}

.stat__label {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin-top: 0.5rem;
}

/* ---------- Events / News List ---------- */
.event-item {
  display: flex;
  gap: 24px;
  padding: 2rem 0;
  border-bottom: 1px solid var(--c-line);
  align-items: flex-start;
}
.event-item:last-child { border-bottom: none; }

.event-item__date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  border-right: 1px solid var(--c-line);
  padding-right: 20px;
}

.event-item__day {
  font-family: var(--f-sans);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1;
}

.event-item__month {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-text-soft);
  margin-top: 0.25rem;
}

.event-item__body { flex: 1; }

.event-item__title {
  font-family: var(--f-sans);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.event-item__desc {
  font-size: 0.92rem;
  color: var(--c-text-soft);
}

/* ---------- Contact Form ---------- */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--f-sans);
  font-size: 0.95rem;
  color: var(--c-text);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: border-color 0.3s ease;
}
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--c-accent);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-family: var(--f-sans);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-bg);
  background: var(--c-accent);
  border: 1px solid var(--c-accent);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.3s ease;
}
.form-submit:hover {
  background: var(--c-accent-dk);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-bg-dark);
  color: var(--c-bg);
  padding: 4rem 0 2rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.7fr 1.15fr 1fr 1fr 0.9fr;
  gap: 32px;
  margin-bottom: 3rem;
}

@media (max-width: 1080px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 768px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

.site-footer__title {
  font-family: var(--f-sans);
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--c-bg);
}

.site-footer__text {
  font-size: 0.88rem;
  color: rgba(240, 242, 244, 0.65);
  line-height: 1.8;
}

.site-footer__link {
  display: block;
  font-size: 0.88rem;
  color: rgba(240, 242, 244, 0.65);
  padding: 4px 0;
  transition: color 0.3s;
}
.site-footer__link:hover { color: var(--c-accent); }

.site-footer__bottom {
  border-top: 1px solid rgba(240, 242, 244, 0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(240, 242, 244, 0.4);
}

/* ---------- Page Banner ---------- */
.page-banner {
  padding: 10rem 0 4rem;
  text-align: center;
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-line);
}

.page-banner__eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-accent-dk);
  margin-bottom: 1rem;
}

.page-banner__title {
  font-family: var(--f-sans);
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: var(--c-text);
}

/* ---------- RTL Support for Persian ---------- */
[dir="rtl"] {
  text-align: right;
}
[dir="rtl"] .nav { flex-direction: row-reverse; }
[dir="rtl"] .lang-switcher {
  border-left: none;
  border-right: 1px solid var(--c-line);
  padding-left: 0;
  padding-right: 20px;
  margin-left: 0;
  margin-right: 8px;
}
[dir="rtl"] .event-item {
  flex-direction: row-reverse;
}
[dir="rtl"] .event-item__date {
  border-right: none;
  border-left: 1px solid var(--c-line);
  padding-right: 0;
  padding-left: 20px;
}

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

.fade-up { animation: fadeUp 0.8s ease forwards; }
.fade-up--delay-1 { animation-delay: 0.2s; opacity: 0; }
.fade-up--delay-2 { animation-delay: 0.4s; opacity: 0; }
.fade-up--delay-3 { animation-delay: 0.6s; opacity: 0; }

/* Screw rotation animation */
@keyframes screwSpin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* Material flow animation */
@keyframes materialFlow {
  0%   { transform: translateX(-100%); opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { transform: translateX(700px); opacity: 0; }
}

/* Heat shimmer */
@keyframes heatShimmer {
  0%, 100% { opacity: 0.3; transform: translateY(0); }
  50%      { opacity: 0.6; transform: translateY(-3px); }
}

/* ========================================
   Image Gallery / Showcase Sections
   ======================================== */

/* ---------- Accordion / Collapsible Gallery ---------- */
/*
   Layout: a responsive grid of compact thumbnail tiles.
   When a tile is clicked it "expands" — spanning multiple columns
   and revealing the large image + caption + description inline.
   Only one tile can be expanded at a time (accordion behaviour).
   Pure CSS grid + a single JS class toggle.
*/

.accordion-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.accordion-gallery .gallery__item {
  aspect-ratio: 1 / 1;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  transition: grid-column 0.4s ease, transform 0.35s ease,
              box-shadow 0.35s ease, opacity 0.3s ease;
}

/* Dim non-active tiles when one is expanded */
.accordion-gallery.is-expanded .gallery__item:not(.is-expanded) {
  opacity: 0.45;
  transform: scale(0.96);
}
.accordion-gallery.is-expanded .gallery__item:not(.is-expanded):hover {
  opacity: 0.7;
  transform: scale(0.98);
}

/* Expanded tile: spans full width, reveals content */
.accordion-gallery .gallery__item.is-expanded {
  grid-column: 1 / -1;
  aspect-ratio: auto;
  display: flex;
  flex-direction: row;
  background: var(--c-bg);
  border: 1px solid var(--c-accent);
  box-shadow: 0 10px 32px rgba(21, 27, 33, 0.14);
  opacity: 1 !important;
  transform: scale(1) !important;
}

.accordion-gallery .gallery__item.is-expanded .gallery__img {
  width: 55%;
  max-height: 480px;
  object-fit: cover;
  height: auto;
  flex-shrink: 0;
}

/* Expanded text panel */
.accordion-gallery .acc-detail {
  display: none;
  flex: 1;
  padding: 2rem 2.25rem;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.accordion-gallery .gallery__item.is-expanded .acc-detail {
  display: flex;
}

.accordion-gallery .gallery__item.is-expanded .gallery__caption {
  display: none; /* replaced by acc-detail */
}

.acc-detail__cat {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent-dk);
  margin-bottom: 0.6rem;
}

.acc-detail__title {
  font-family: var(--f-sans);
  font-size: 1.6rem;
  line-height: 1.25;
  margin-bottom: 1rem;
  color: var(--c-text);
}

.acc-detail__desc {
  font-size: 0.92rem;
  color: var(--c-text-soft);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.acc-detail__actions {
  display: flex;
  gap: 16px;
  align-items: center;
}

.acc-detail__expand {
  font-family: var(--f-sans);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent-dk);
  border-bottom: 1px solid var(--c-accent);
  padding-bottom: 2px;
  cursor: pointer;
  transition: color 0.25s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.acc-detail__expand:hover { color: var(--c-red); }

.acc-detail__collapse {
  font-family: var(--f-sans);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  background: none;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 6px 14px;
  cursor: pointer;
  transition: all 0.25s;
}
.acc-detail__collapse:hover {
  color: var(--c-text);
  border-color: var(--c-accent);
}

/* Small "+" indicator on collapsed tiles */
.acc-plus {
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(240, 242, 244, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--c-accent-dk);
  transition: transform 0.3s ease, opacity 0.3s ease;
  pointer-events: none;
  z-index: 3;
}
.gallery__item:hover .acc-plus {
  transform: rotate(90deg) scale(1.1);
}
.gallery__item.is-expanded .acc-plus { display: none; }

/* On collapsed tiles, show a small permanent label at bottom */
.acc-mini-label {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 24px 10px 8px;
  background: linear-gradient(to top, rgba(15,20,26,0.85), transparent);
  color: var(--c-bg);
  font-size: 0.72rem;
  line-height: 1.3;
  text-align: center;
  transition: opacity 0.3s;
}
.gallery__item.is-expanded .acc-mini-label { display: none; }

/* Responsive: stacked on narrow screens */
@media (max-width: 640px) {
  .accordion-gallery {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 8px;
  }
  .accordion-gallery .gallery__item.is-expanded {
    flex-direction: column;
  }
  .accordion-gallery .gallery__item.is-expanded .gallery__img {
    width: 100%;
    max-height: 280px;
  }
  .accordion-gallery .gallery__item.is-expanded .acc-detail {
    padding: 1.25rem 1.5rem;
  }
  .acc-detail__title { font-size: 1.25rem; }
}

/* ---------- Gallery Filter Tabs ---------- */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--c-line);
}

.gallery-filter {
  font-family: var(--f-sans);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  background: transparent;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 8px 16px;
  cursor: pointer;
  transition: all 0.25s ease;
}
.gallery-filter:hover {
  color: var(--c-text);
  border-color: var(--c-accent);
}
.gallery-filter--active {
  color: var(--c-bg);
  background: var(--c-accent);
  border-color: var(--c-accent);
}

/* ---------- Gallery Grid ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.gallery--4 {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.gallery__item {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg-alt);
  cursor: pointer;
  aspect-ratio: 4 / 3;
}

.gallery__item--tall { aspect-ratio: 3 / 4; }
.gallery__item--wide { aspect-ratio: 16 / 9; }
.gallery__item--square { aspect-ratio: 1 / 1; }

.gallery__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease, filter 0.5s ease;
  filter: saturate(0.88) contrast(1.05);
}

.gallery__item:hover .gallery__img {
  transform: scale(1.06);
  filter: saturate(0.95) contrast(1.08);
}

/* Caption overlay */
.gallery__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 40px 18px 16px;
  background: linear-gradient(to top, rgba(15, 20, 26, 0.9), rgba(15, 20, 26, 0.55) 55%, transparent);
  color: var(--c-bg);
  transform: translateY(8px);
  opacity: 0;
  transition: transform 0.35s ease, opacity 0.35s ease;
  pointer-events: none;
}

.gallery__item:hover .gallery__caption,
.gallery__item:focus-visible .gallery__caption {
  transform: translateY(0);
  opacity: 1;
}

.gallery__caption-title {
  font-family: var(--f-sans);
  font-size: 1.05rem;
  line-height: 1.3;
  margin-bottom: 2px;
}

.gallery__caption-sub {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(244, 237, 224, 0.65);
}

/* Permanent small label for product shots */
.gallery__tag {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  background: rgba(240, 242, 244, 0.92);
  color: var(--c-text-soft);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

/* ---------- Feature Strip (product cards with image) ---------- */
.product-card {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 24px rgba(21, 27, 33, 0.1);
}

.product-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-bg-alt);
}

.product-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover .product-card__img { transform: scale(1.05); }

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

.product-card__title {
  font-family: var(--f-sans);
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

.product-card__desc {
  font-size: 0.92rem;
  color: var(--c-text-soft);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.product-card__list {
  list-style: none;
  margin-top: auto;
  padding-top: 0.5rem;
}
.product-card__list li {
  font-size: 0.84rem;
  color: var(--c-text-soft);
  padding: 5px 0 5px 20px;
  position: relative;
}
.product-card__list li::before {
  content: '';
  position: absolute;
  left: 0; top: 14px;
  width: 8px; height: 1px;
  background: var(--c-accent);
}

/* ---------- Wide Feature Image (factory) ---------- */
.feature-image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
  margin-bottom: 2rem;
}
.feature-image img {
  width: 100%;
  display: block;
  object-fit: cover;
  max-height: 520px;
}
.feature-image--tall { max-width: 560px; margin-left: auto; margin-right: auto; }
.feature-image--tall img { max-height: 640px; }

/* ---------- Two-column media layout ---------- */
.media-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
/* grid/flex children default to min-width:auto, which lets wide horizontal
   scrollers (photo strips) blow out the column and the whole page width */
.media-split > * { min-width: 0; }
@media (max-width: 900px) {
  .media-split { grid-template-columns: 1fr; gap: 2rem; }
}
.media-split--reverse .media-split__media { order: 2; }
@media (max-width: 900px) {
  .media-split--reverse .media-split__media { order: 0; }
}

/* ---------- Caption under image ---------- */
.media-caption {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--c-text-soft);
  margin-top: 0.75rem;
  padding-left: 12px;
  border-left: 2px solid var(--c-accent);
}

/* ---------- Equipment list (machines) ---------- */
.equip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.equip {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg);
}
.equip__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-bg-alt);
}
.equip__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.equip:hover .equip__media img { transform: scale(1.05); }
.equip__body { padding: 1.25rem 1.4rem 1.5rem; }
.equip__title {
  font-family: var(--f-sans);
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
}
.equip__desc {
  font-size: 0.83rem;
  color: var(--c-text-soft);
  line-height: 1.6;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(15, 18, 22, 0.96);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem 2rem;
}
.lightbox--open { display: flex; }

.lightbox__figure {
  max-width: 1100px;
  width: 100%;
  text-align: center;
  animation: fadeUp 0.3s ease;
}
.lightbox__img {
  max-width: 100%;
  max-height: 78vh;
  object-fit: contain;
  border: 1px solid rgba(240, 242, 244, 0.12);
  border-radius: var(--radius);
  background: #fff;
}
.lightbox__caption {
  color: rgba(240, 242, 244, 0.88);
  font-family: var(--f-sans);
  font-size: 1.15rem;
  margin-top: 1rem;
}
.lightbox__counter {
  color: rgba(240, 242, 244, 0.45);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  margin-top: 0.4rem;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  background: rgba(240, 242, 244, 0.1);
  border: 1px solid rgba(240, 242, 244, 0.2);
  color: var(--c-bg);
  cursor: pointer;
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: background 0.25s ease;
}
.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover { background: rgba(240, 242, 244, 0.22); }

.lightbox__close { top: 1.2rem; right: 1.2rem; font-size: 1.3rem; }
.lightbox__prev  { left: 1.2rem; top: 50%; transform: translateY(-50%); }
.lightbox__next  { right: 1.2rem; top: 50%; transform: translateY(-50%); }

@media (max-width: 640px) {
  .lightbox__prev { left: 0.4rem; }
  .lightbox__next { right: 0.4rem; }
  .lightbox__close { top: 0.6rem; right: 0.6rem; }
}

/* ---------- Photo strip (horizontal scroll) ---------- */
.strip {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: thin;
}
.strip::-webkit-scrollbar { height: 6px; }
.strip::-webkit-scrollbar-track { background: var(--c-bg-alt); }
.strip::-webkit-scrollbar-thumb { background: var(--c-line); border-radius: 3px; }

.strip__item {
  flex: 0 0 auto;
  width: 300px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg);
  cursor: pointer;
}
.strip__item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.45s ease;
}
.strip__item:hover img { transform: scale(1.05); }
.strip__label {
  padding: 0.85rem 1rem;
  font-family: var(--f-sans);
  font-size: 0.95rem;
}

/* ---------- Stats with photo strip ---------- */
.milestone {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 24px;
  text-align: center;
  padding: 2.5rem 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

/* ---------- Utility ---------- */
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.pt-0 { padding-top: 0; }
.text-soft { color: var(--c-text-soft); }
.italic { font-style: italic; }

/* ---------- SEO Product Pages ---------- */
.breadcrumb {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 1.1rem 24px 0;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--c-text-soft);
}
.breadcrumb a { color: var(--c-text-soft); text-decoration: none; border-bottom: 1px solid transparent; }
.breadcrumb a:hover { color: var(--c-accent); border-bottom-color: var(--c-accent); }
.breadcrumb span { opacity: 0.45; margin: 0 0.45em; }

.prose { max-width: 780px; }
.prose p { margin: 0 0 1.1rem; color: var(--c-text-soft); line-height: 1.75; }
.prose h2 {
  font-family: var(--f-sans);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 600;
  color: var(--c-text);
  margin: 2.4rem 0 0.9rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--c-line);
  letter-spacing: -0.01em;
}
.prose h2:first-child { border-top: 0; padding-top: 0; margin-top: 0; }
.prose ul { margin: 0 0 1.3rem; padding-left: 1.1rem; color: var(--c-text-soft); line-height: 1.8; }
.prose li { margin-bottom: 0.4rem; }
.prose strong { color: var(--c-text); font-weight: 600; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6rem 0 0;
  font-size: 0.88rem;
}
.spec-table caption {
  text-align: left;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  padding-bottom: 0.7rem;
}
.spec-table th,
.spec-table td {
  text-align: left;
  padding: 0.72rem 0.9rem;
  border-bottom: 1px solid var(--c-line);
  vertical-align: top;
}
.spec-table th {
  width: 34%;
  font-weight: 500;
  color: var(--c-text-soft);
  background: var(--c-bg-alt);
  border-right: 1px solid var(--c-line);
}
.spec-table td { color: var(--c-text); font-family: var(--f-mono); font-size: 0.84rem; }
.spec-note {
  margin: 0.9rem 0 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--c-text-soft);
}

.section--alt { background: var(--c-bg-alt); }

.faq { max-width: 780px; }
.faq__item {
  border-bottom: 1px solid var(--c-line);
  padding: 0.2rem 0;
}
.faq__q {
  cursor: pointer;
  list-style: none;
  padding: 1.05rem 2rem 1.05rem 0;
  font-weight: 500;
  color: var(--c-text);
  position: relative;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after {
  content: "+";
  position: absolute;
  right: 0.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--c-accent);
  line-height: 1;
}
.faq__item[open] .faq__q::after { content: "\2013"; }
.faq__a { padding: 0 2rem 1.2rem 0; color: var(--c-text-soft); line-height: 1.75; margin: 0; }

.link-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--c-line); border: 1px solid var(--c-line); }
.link-cards a {
  display: block;
  padding: 1.5rem 1.4rem;
  background: var(--c-bg);
  text-decoration: none;
  color: var(--c-text);
  transition: background 0.2s ease;
}
.link-cards a:hover { background: var(--c-bg-alt); }
.link-cards__label { display: block; font-weight: 500; margin-bottom: 0.35rem; }
.link-cards__desc { display: block; font-size: 0.82rem; color: var(--c-text-soft); line-height: 1.55; }

[dir="rtl"] .breadcrumb, [dir="rtl"] .prose ul { direction: rtl; }
[dir="rtl"] .spec-table th, [dir="rtl"] .spec-table td { text-align: right; }
[dir="rtl"] .faq__q { padding: 1.05rem 0 1.05rem 2rem; }
[dir="rtl"] .faq__q::after { right: auto; left: 0.2rem; }
[dir="rtl"] .faq__a { padding: 0 0 1.2rem 2rem; }

/* ---------- Knowledge base (added) ---------- */
/* Seven nav items + language switcher: keep labels on one line. */
.nav { gap: 22px; }
.nav__link { white-space: nowrap; }

.link-card__eyebrow {
  display: block;
  font-family: var(--f-sans);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin-bottom: 0.5rem;
}
.link-card strong {
  display: block;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.45rem;
}
.link-card > span:last-child {
  display: block;
  font-size: 0.82rem;
  color: var(--c-text-soft);
  line-height: 1.55;
}
.cta-btn {
  display: inline-block;
  padding: 0.72rem 1.5rem;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--f-sans);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.2s ease;
}
.cta-btn:hover { background: var(--c-accent-dk); }

/* Knowledge article body: tighten heading rhythm inside .prose */
.prose h2 { margin-top: 2.4rem; }
.prose h3 { margin-top: 1.8rem; }
.prose table + p { margin-top: 1.2rem; }

/* ---------- Product detail page gallery ---------- */
.product-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
  margin: 0 0 0.5rem;
}
.product-gallery__item {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.product-gallery__item:hover {
  box-shadow: 0 4px 14px rgba(0,0,0,0.06);
  transform: translateY(-2px);
}
.product-gallery__item picture,
.product-gallery__item img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3/2;
  object-fit: cover;
}
.product-gallery__caption {
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  color: var(--c-text-soft);
  line-height: 1.45;
  border-top: 1px solid var(--c-line);
}

/* ---------- Product trust strip (hard numbers) ---------- */
.trust-strip {
  border-bottom: 1px solid var(--c-line);
  background: var(--c-bg-alt);
}
.trust-strip__inner {
  display: flex;
  flex-wrap: wrap;
  max-width: 1080px;
  margin: 0 auto;
}
.trust-strip__item {
  flex: 1 1 0;
  min-width: 160px;
  padding: 1.05rem 1.1rem;
  text-align: center;
  border-inline-start: 1px solid var(--c-line);
}
.trust-strip__item:first-child { border-inline-start: 0; }
.trust-strip__num {
  font-family: var(--f-sans);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  font-weight: 700;
  color: var(--c-accent-dk);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
.trust-strip__label {
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--c-text-soft);
  margin-top: 0.3rem;
  line-height: 1.35;
}
@media (max-width: 760px) {
  .trust-strip__item {
    flex: 1 1 46%;
    border-inline-start: 0;
    border-top: 1px solid var(--c-line);
  }
  .trust-strip__item:nth-child(-n+2) { border-top: 0; }
  .trust-strip__item:nth-child(even) { border-inline-start: 1px solid var(--c-line); }
}

/* ---------- Product hub cards ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  margin-top: 2.4rem;
}
.prod-card {
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
  text-decoration: none;
  color: var(--c-text);
  transition: background 0.2s ease;
}
.prod-card:hover { background: var(--c-bg-alt); }
.prod-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--c-line);
}
.prod-card__body { padding: 1.2rem 1.15rem 1.4rem; }
.prod-card__title { font-weight: 600; font-size: 0.98rem; margin: 0 0 0.4rem; line-height: 1.35; }
.prod-card__desc { font-size: 0.83rem; color: var(--c-text-soft); line-height: 1.55; margin: 0; }