/* ==== Design Tokens (Ultra-dark palette) ==== */
:root{
  --c-black:#000000;       /* header/footer, deepest */
  --c-bg:#111111;          /* page background */
  --c-card:#1e1e1e;        /* product/spec cards + product image bg */
  --c-ink:#f8f9fa;         /* text & accents */

  /* Derived tokens */
  --color-primary:var(--c-black);
  --color-secondary:var(--c-bg);
  --color-tertiary:var(--c-card);
  --color-surface:var(--c-card);
  --color-text-light:var(--c-ink);

  --primary-gradient:linear-gradient(135deg, var(--c-black) 0%, var(--c-bg) 100%);
  --secondary-gradient:linear-gradient(135deg, var(--c-bg) 0%, var(--c-card) 100%);
  --tertiary-gradient:linear-gradient(135deg, var(--c-card) 0%, var(--c-black) 100%);

  /* Semantic */
  --accent:var(--c-ink);              /* filled buttons */
  --accent-light:var(--c-ink);
  --surface-light:var(--c-card);
  --hover-glow:rgba(248,249,250,.1);

  --text-primary:var(--c-ink);
  --text-secondary:rgba(248,249,250,.75);
  --text-light:rgba(248,249,250,.25);
  --text-dark:var(--c-ink);

  --bg-light:var(--c-bg);
  --bg-dark:var(--c-black);

  --shadow-light:0 4px 20px rgba(0,0,0,.45);
  --shadow-medium:0 8px 30px rgba(0,0,0,.55);
  --shadow-heavy:0 15px 35px rgba(0,0,0,.65);

  --border-radius:15px; --transition:all .3s ease;
  --header-height:72px;

  /* Unified product card sizing */
  --card-min: 280px;
  --card-max: 300px;
  --card-img-h: 270px;
}

*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;
  line-height:1.6;
  color:var(--text-primary);
  background:var(--bg-light);
  overflow-x:hidden
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button:focus,a:focus,input:focus{outline:2px solid var(--text-primary);outline-offset:2px}
.loading{opacity:.7;pointer-events:none}

/* ==== Header (IDENTICAL on all pages) ==== */
.header{
  position:fixed;top:0;width:100%;
  background:var(--bg-dark);color:var(--text-primary);
  backdrop-filter:blur(20px);z-index:1000;transition:var(--transition);
  border-bottom:1px solid var(--text-light)
}
.logo a{ color:var(--text-primary); text-decoration:none; }
/* === Mobile hero video === */
.hero-mobile-video{display:none;position:absolute;inset:0;z-index:1}
.hero-video{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}

/* Show video only on small screens; hide carousel/overlay there */
@media (max-width: 768px){
  .hero-mobile-video{display:block}
  .carousel-container,.hero-overlay,.carousel-nav{display:none !important}
  .hero{height:100svh}
}


.header.scrolled{box-shadow:var(--shadow-light)}
.nav-container{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:2rem;padding:.75rem 1rem}
.logo{font-size:1.8rem;font-weight:800;color:var(--text-primary);z-index:1001}
.nav-menu{
  display:none;position:fixed;top:0;left:0;width:100%;height:100vh;
  background:var(--bg-dark);backdrop-filter:blur(20px);
  flex-direction:column;align-items:center;justify-content:center;gap:2rem;
  list-style:none;transition:var(--transition)
}
.nav-menu.active{display:flex}
.nav-menu li{opacity:0;transform:translateY(20px);animation:slideInUp .3s ease forwards}
@keyframes slideInUp{to{opacity:1;transform:translateY(0)}}
.nav-menu a{
  color:var(--text-primary);font-weight:600;font-size:1.3rem;
  padding:1rem 2rem;border-radius:12px;transition:var(--transition);position:relative
}
/* === Logo image support === */
.logo-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  text-decoration: none;
}
.logo-img {
  height: clamp(32px, 6vw, 56px);
  width: auto;
  display: block;
}
/* Visually hidden text for accessibility */
.logo-text {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.nav-menu a:hover{background:var(--hover-glow);transform:translateY(-2px)}
.nav-right{grid-column:3;justify-self:end;display:flex;align-items:center;gap:1rem;z-index:1001}
.lang-switcher{position:relative;display:inline-flex;align-items:center;cursor:pointer}
.lang-flag{font-size:1.2rem;padding:.4rem;border-radius:50%;transition:var(--transition);opacity:.85}
.lang-flag.active,.lang-flag:hover{opacity:1;background:var(--hover-glow);transform:scale(1.1)}
.lang-options{
  display:none;position:absolute;top:120%;right:0;background:var(--bg-dark);
  backdrop-filter:blur(10px);box-shadow:var(--shadow-light);border-radius:8px;
  flex-direction:column;padding:.5rem;z-index:1002;border:1px solid var(--text-light)
}
.lang-switcher.open .lang-options{display:flex}
.hamburger{display:flex;flex-direction:column;gap:4px;padding:12px;cursor:pointer;border-radius:10px;touch-action:manipulation}
.hamburger:active{background:var(--hover-glow)}
.hamburger span{width:22px;height:2px;background:var(--text-primary);border-radius:2px;transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(7px,-6px)}

/* Desktop header layout */
@media (min-width:1024px){
  .nav-menu{position:static;display:flex !important;flex-direction:row;width:auto;height:auto;background:none;backdrop-filter:none;gap:1rem;justify-content:center;flex-wrap:wrap}
  .nav-menu li{opacity:1;transform:none;animation:none}
  .nav-menu a{font-size:.95rem;padding:.5rem .8rem;line-height:1;display:flex;align-items:center}
  .nav-menu a::after{content:'';position:absolute;width:0;height:2px;bottom:-5px;left:50%;background:var(--text-primary);transition:var(--transition);transform:translateX(-50%)}
  .nav-menu a:hover::after{width:100%}
  .hamburger{display:none}
}

/* ==== Sections & Product Cards ==== */
.section{padding:4rem 1.5rem;max-width:1200px;margin:0 auto}
.section-title{font-size:clamp(2rem,5vw,2.8rem);text-align:center;margin-bottom:3rem;font-weight:700;color:var(--text-primary)}

.product-card{
  background:var(--surface-light);
  border-radius:var(--border-radius);
  box-shadow:var(--shadow-light);
  overflow:hidden;transition:var(--transition);cursor:pointer;
  border:1px solid var(--text-light)
}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-medium);border-color:var(--text-primary)}
.product-image{width:100%;height:var(--card-img-h);background:var(--c-card);display:flex;align-items:center;justify-content:center;color:var(--text-primary)}
.product-image img{width:100%;height:100%;object-fit:cover}
.product-info{padding:1.5rem}
.product-name{font-size:1.1rem;font-weight:600;margin-bottom:.5rem;color:var(--text-primary)}
.product-price{font-size:1.3rem;font-weight:700;color:var(--text-primary);margin-bottom:1rem;opacity:.95}
.order-button{
  width:100%;
  background:#000000;            /* solid black */
  color:#f8f9fa;                 /* light text */
  border:1px solid var(--text-light);
  padding:.8rem;border-radius:10px;font-weight:700;cursor:pointer;
  transition:var(--transition);min-height:44px;
  font-size:1.1rem;
}
.order-button:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(0,0,0,.6);
  background:#000000;            /* stay black on hover */
}
/* Page back arrow (below hero stripe) */
/* Icon-only back button (no visible box) */
.page-back{
  max-width:1200px;
  margin:0 auto;
  padding:.5rem 1.5rem 0;
}

.back-arrow{
  display:inline-flex;
  align-items:center;
  justify-content:center;

  /* keep a comfortable hit area but no visible box */
  padding:.4rem;
  background:transparent;
  border:none;

  color:var(--text-primary);   /* drives the SVG via currentColor */
  border-radius:8px;           /* invisible (no bg/border), keeps focus ring shape */
  line-height:1;
  transition:color .2s ease, transform .08s ease;
}

.back-arrow svg{
  width:30px;                  /* ← bigger icon */
  height:30px;
  display:block;
}

/* Interaction: subtle nudge & color only (no box) */
.back-arrow:hover,
.back-arrow:focus-visible{
  color:#ffffff;               /* tweak if you want a different hover color */
  outline:none;
  transform:translateX(-2px);
}

.back-arrow:active{
  transform:translateX(-1px);
}


.see-all-button{
  display:flex;align-items:center;justify-content:center;margin:3rem auto 0;
  background:transparent;color:var(--text-primary);border:2px solid var(--text-primary);
  padding:1rem 2rem;border-radius:50px;font-weight:700;cursor:pointer;transition:var(--transition);min-height:44px
}
.see-all-button:hover{background:var(--text-primary);color:var(--bg-dark);transform:translateY(-2px)}

/* ==== Footer ==== */
.footer{background:var(--bg-dark);color:var(--text-primary);padding:3rem 1.5rem 1rem}
.footer-content{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr;gap:2rem;margin-bottom:2rem}
.footer-section{text-align:center}
.footer-section h3{margin-bottom:1.5rem;font-size:1.3rem;font-weight:700}
.contact-info{display:flex;flex-direction:column;gap:1rem;align-items:center}
.contact-item{display:flex;align-items:center;gap:.8rem;color:var(--text-primary);font-size:1rem;transition:var(--transition);padding:.5rem;border-radius:8px}
.contact-item:hover{background:var(--hover-glow);transform:translateY(-2px)}
.about-brand-link{
  background:transparent;color:var(--text-primary);border:2px solid var(--text-primary);
  padding:1rem 2rem;border-radius:50px;font-weight:700;transition:var(--transition);display:inline-block;min-height:44px;line-height:1.2
}
.about-brand-link:hover{background:var(--text-primary);color:var(--bg-dark);transform:translateY(-3px);box-shadow:0 5px 15px rgba(0,0,0,.35)}
.social-icons{display:flex;gap:1.5rem;justify-content:center}
.social-icon{
  width:50px;height:50px;background:var(--text-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:var(--bg-dark);font-size:1.4rem;transition:var(--transition);text-decoration:none;position:relative;overflow:hidden
}
.social-icon:hover{transform:translateY(-3px) scale(1.1)}
.footer-bottom{text-align:center;padding-top:2rem;margin-top:2rem;border-top:1px solid var(--text-light);color:var(--text-secondary)}

@media (min-width:768px){
  .nav-container{padding:1rem 3rem}
  .logo{font-size:2rem}
  .footer-content{grid-template-columns:repeat(3,1fr);text-align:center}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}

/* ==== Service Centers (nice padding & alignment) ==== */
.service-centers{
  display:grid;
  grid-template-columns:1fr;
  gap:1.25rem;
  margin-top:1.25rem;
}

@media (min-width:768px){
  .service-centers{ grid-template-columns:repeat(2,1fr); }
}
@media (min-width:1024px){
  .service-centers{ grid-template-columns:repeat(3,1fr); }
}

.service-card{
  background:var(--c-card);
  color:var(--text-primary);
  border:1px solid var(--text-light);
  border-radius:var(--border-radius);
  padding:1.25rem 1.25rem;                 /* ← real inner padding */
  box-shadow:var(--shadow-light);
  transition:var(--transition);
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-medium);
  border-color:var(--text-primary);
}

.service-title{
  font-weight:800;
  font-size:1.1rem;
  margin-bottom:.75rem;
  letter-spacing:.2px;
}

.service-info{
  display:flex;                             /* emoji + text/link aligned */
  align-items:center;
  gap:.6rem;
  padding:.4rem 0;                          /* vertical rhythm */
  line-height:1.5;
  color:var(--text-secondary);
}

/* subtle separators between rows (not on the first one) */
.service-info + .service-info{
  border-top:1px solid rgba(248,249,250,.08);
  margin-top:.4rem;
  padding-top:.8rem;
}

.service-link{
  color:var(--text-primary);
  font-weight:600;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:var(--transition);
}
.service-link:hover{
  border-bottom-color:var(--text-primary);
}


/* ==== Modal (SHARED across all pages) ==== */
.modal{
  display:none;position:fixed;inset:0;
  background:rgba(0,0,0,.85);
  z-index:2000;align-items:center;justify-content:center;padding:1rem
}
.modal.active{display:flex}
.modal-content{
  background:var(--c-card);
  color:var(--text-primary);
  padding:2rem;border-radius:var(--border-radius);
  max-width:400px;width:100%;text-align:center;
  border:1px solid var(--text-light);
  box-shadow:var(--shadow-medium)
}
.modal-title{font-size:1.4rem;margin-bottom:1.5rem;font-weight:700}
.form-group label{color:var(--text-secondary);font-weight:600;display:block;margin-bottom:.5rem;text-align:left}
.form-group input{
  width:100%;padding:1rem;border:1px solid var(--text-light);
  border-radius:10px;background:var(--c-bg);color:var(--text-primary);
  transition:var(--transition)
}
.form-group input::placeholder{color:var(--text-secondary)}
.form-group input:focus{outline:none;border-color:var(--text-primary);box-shadow:0 0 0 3px rgba(248,249,250,.15)}
.modal-buttons{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}
.btn-submit{
  background:#000000;            /* solid black */
  color:#f8f9fa;                 /* light text */
  border:1px solid var(--text-light);
  padding:1rem;border-radius:10px;font-weight:800;cursor:pointer;
  transition:var(--transition);min-height:44px
}
.btn-submit:hover{
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(0,0,0,.6);
  background:#000000;            /* stay black on hover */
}
.btn-cancel{
  background:transparent;color:var(--text-secondary);border:2px solid var(--text-light);
  padding:1rem;border-radius:10px;font-weight:800;cursor:pointer;transition:var(--transition);min-height:44px
}
.btn-cancel:hover{border-color:var(--text-primary);color:var(--text-primary);background:var(--hover-glow)}
@media (min-width:768px){ .modal-buttons{flex-direction:row;justify-content:center} }

/* === Product page: image gallery === */
.product-gallery{position:relative;border-radius:16px;overflow:hidden;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08)}
.product-track{display:flex;gap:0;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.product-track::-webkit-scrollbar{height:6px}
.product-track::-webkit-scrollbar-thumb{background:rgba(255,255,255,.2);border-radius:6px}
.product-slide{flex:0 0 100%;scroll-snap-align:center;position:relative}
.product-slide img{display:block;width:100%;height:auto;object-fit:contain;background:transparent}
/* Keep a nice aspect on taller phones */
@media (max-width:768px){
  .product-slide{min-height:62vh;display:flex;align-items:center;justify-content:center}
  .product-slide img{max-height:62vh}
}
@media (min-width:769px){
  .product-slide{min-height:420px;display:flex;align-items:center;justify-content:center}
  .product-slide img{max-height:520px}
}
.product-dots{position:absolute;left:0;right:0;bottom:10px;display:flex;justify-content:center;gap:8px;z-index:2;pointer-events:none}
.product-dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.35);transform:scale(.9);transition:transform .2s ease,background .2s ease}
.product-dot.active{background:rgba(255,255,255,.95);transform:scale(1.1)}