/* Base */
:root {
  --bg: #0b1120;
  --bg-elev: #0f172a;
  --surface: #111827;
  --muted: #94a3b8;
  --text: #e5e7eb;
  --primary: #0ea5e9;
  --primary-600: #0284c7;
  --ring: 0 0 0 4px color-mix(in oklab, var(--primary) 25%, transparent);
  color-scheme: light dark;
}

html.dark {
  --bg: #0b1120;
  --bg-elev: #0f172a;
  --surface: #111827;
  --muted: #94a3b8;
  --text: #e5e7eb;
  --primary: #38bdf8;
  --primary-600: #0891b2;
}

@media (prefers-color-scheme: light) {
  :root:not(.dark) {
    --bg: #f8fafc;
    --bg-elev: #ffffff;
    --surface: #ffffff;
    --muted: #475569;
    --text: #0f172a;
    --primary: #0ea5e9;
    --primary-600: #0284c7;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: min(1120px, 92%); margin-inline: auto; }
.skip-link { position: absolute; left: -999rem; top: auto; }
.skip-link:focus { left: 1rem; top: 1rem; background: var(--bg-elev); color: var(--text); padding: .5rem .75rem; border-radius: .5rem; }

/* Header */
.topbar { background: var(--bg-elev); border-bottom: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .5rem 0; font-size: .875rem; color: var(--muted); }
.topbar .link { color: var(--muted); }

.navbar { position: sticky; top: 0; z-index: 50; background: color-mix(in oklab, var(--bg) 90%, var(--bg-elev)); backdrop-filter: saturate(180%) blur(6px); border-bottom: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .75rem 0; }
.logo { font-weight: 800; letter-spacing: .2px; font-size: 1.25rem; color: var(--text); }
.logo span { color: var(--primary); }

.nav-links { display: flex; align-items: center; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--text); }
.nav-links .cta-inline { display: none; }

.nav-toggle { display: none; background: transparent; border: 0; width: 40px; height: 32px; padding: 0; cursor: pointer; }
.nav-toggle .bar { display: block; width: 100%; height: 2px; background: var(--text); margin: 6px 0; transition: transform .3s, opacity .3s; }

.theme-toggle { border: 1px solid color-mix(in oklab, var(--muted) 30%, transparent); background: var(--bg-elev); color: var(--text); padding: .4rem .6rem; border-radius: .5rem; cursor: pointer; }

/* Hero */
.hero { position: relative; padding: 4rem 0 2rem; overflow: hidden; background: linear-gradient(135deg, color-mix(in oklab, var(--primary) 8%, transparent), transparent 50%); }
.hero .hero-grid { display: grid; gap: 2rem; grid-template-columns: 1.1fr .9fr; align-items: center; }
.hero h1 { font-size: clamp(1.8rem, 2.5vw, 2.6rem); line-height: 1.2; margin: 0 0 1rem; background: linear-gradient(135deg, var(--text), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.lead { font-size: 1.05rem; color: var(--muted); margin: 0 0 1.25rem; }
.badges { display: flex; flex-wrap: wrap; gap: .5rem .75rem; list-style: none; padding: 0; margin: 1rem 0 0; color: var(--muted); font-size: 0.95rem; }
.badges li { background: color-mix(in oklab, var(--primary) 10%, transparent); padding: 0.4rem 0.8rem; border-radius: 0.5rem; border: 1px solid color-mix(in oklab, var(--primary) 20%, transparent); }
.actions { display: flex; gap: .75rem; align-items: center; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; border: 1px solid transparent; background: var(--bg-elev); color: var(--text); padding: .7rem 1rem; border-radius: .75rem; cursor: pointer; text-decoration: none; font-weight: 600; }
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--primary); color: white; box-shadow: 0 8px 24px -8px color-mix(in oklab, var(--primary) 60%, transparent); }
.btn-primary:hover { background: var(--primary-600); }
.btn-ghost { background: transparent; border-color: color-mix(in oklab, var(--muted) 30%, transparent); }
.btn-sm { padding: .5rem .75rem; font-size: .9rem; border-radius: .6rem; }

.device-card { background: linear-gradient(135deg, color-mix(in oklab, var(--primary) 20%, transparent), transparent); border: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); border-radius: 1rem; aspect-ratio: 16/10; display: grid; place-items: center; }
.device-card.small { aspect-ratio: 4/3; }
.device-card img { width: 85%; filter: drop-shadow(0 10px 30px rgba(0,0,0,.3)); }

.wave { position: absolute; left: 0; right: 0; bottom: -1px; height: 140px; background: radial-gradient(120% 140% at 50% 0%, color-mix(in oklab, var(--primary) 15%, transparent), transparent 60%); pointer-events: none; }

/* Sections */
.section { padding: 3.5rem 0; }
.section.alt { background: color-mix(in oklab, var(--bg) 92%, var(--bg-elev)); }
.section-header { text-align: center; margin-bottom: 2rem; }
.section-header h2 { margin: 0; font-size: clamp(1.4rem, 2vw, 2rem); }
.section-header p { margin: .5rem auto 0; color: var(--muted); max-width: 52ch; }

.cards-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.card { background: var(--bg-elev); border: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); border-radius: .9rem; padding: 1rem; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease; }
.card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px -8px color-mix(in oklab, var(--primary) 30%, transparent); border-color: color-mix(in oklab, var(--primary) 40%, transparent); }
.card h3 { margin: 0 0 .5rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); }
.card img { border-radius: 0.6rem; margin-bottom: 0.75rem; }

/* Services with 3D gallery */
.service-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
.service-card { background: var(--bg-elev); border: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); border-radius: 1rem; padding: 1rem; display: grid; gap: 1rem; }
.service-card header h3 { margin: 0 0 .25rem; font-size: 1.15rem; }

.service-gallery { display: grid; gap: 1rem; }

/* Professional 3-up Carousel Design */
.sg-window { 
  position: relative; 
  height: 380px; 
  display: flex; 
  align-items: center; 
  justify-content: center;
  background: linear-gradient(135deg, color-mix(in oklab, var(--primary) 8%, transparent), color-mix(in oklab, var(--bg-elev) 95%, transparent));
  border-radius: 1.2rem;
  padding: 1rem;
  overflow: hidden;
}
.sg-carousel { 
  position: relative; 
  width: 100%; 
  height: 100%; 
  transform-style: preserve-3d; 
  perspective: 1400px; 
}
.sg-item { 
  position: absolute; 
  top: 0; 
  left: 0; 
  width: 100%; 
  height: 100%; 
  display: grid; 
  place-items: center; 
  transition: all .6s cubic-bezier(.25,1,.5,1);
}
.sg-item img { 
  width: 65%; 
  height: auto; 
  max-height: 280px;
  object-fit: cover; 
  border-radius: 1rem; 
  box-shadow: 0 25px 60px -20px rgba(0,0,0,.5), 0 8px 25px -8px rgba(0,0,0,.3); 
  border: 2px solid color-mix(in oklab, var(--bg-elev) 80%, var(--muted));
}

/* States: prev, current, next */
.sg-item.is-current { 
  transform: translateX(0) translateZ(0) scale(1); 
  z-index: 3; 
  opacity: 1; 
}
.sg-item.is-next { 
  transform: translateX(42%) scale(.78) translateY(12%) translateZ(-180px); 
  z-index: 2; 
  opacity: .6; 
  cursor: pointer; 
}
.sg-item.is-prev { 
  transform: translateX(-42%) scale(.78) translateY(12%) translateZ(-180px); 
  z-index: 2; 
  opacity: .6; 
  cursor: pointer; 
}
.sg-item.is-next:hover, .sg-item.is-prev:hover { 
  opacity: .8; 
  transform: translateX(var(--tx)) scale(.82) translateY(8%) translateZ(-160px); 
}

/* Professional mobile controls */
.sg-controls { 
  position: absolute; 
  bottom: 1rem; 
  left: 50%; 
  transform: translateX(-50%); 
  display: none; 
  align-items: center; 
  justify-content: center; 
  gap: 1rem; 
  z-index: 4;
}
.sg-prev, .sg-next { 
  pointer-events: auto; 
  border: 2px solid color-mix(in oklab, var(--primary) 40%, transparent); 
  background: color-mix(in oklab, var(--bg-elev) 95%, var(--primary)); 
  color: var(--primary); 
  width: 48px; 
  height: 48px; 
  border-radius: 50%; 
  display: grid; 
  place-items: center; 
  cursor: pointer; 
  box-shadow: 0 8px 25px rgba(0,0,0,.15); 
  transition: all .3s ease;
  font-size: 18px;
  font-weight: bold;
}
.sg-prev:hover, .sg-next:hover { 
  background: var(--primary); 
  color: white;
  transform: scale(1.1);
  box-shadow: 0 12px 35px rgba(0,0,0,.25);
}



.sg-thumbs { 
  display: flex; 
  gap: .75rem; 
  justify-content: center;
  flex-wrap: wrap;
  padding: .75rem 0;
  margin-top: .5rem;
}
.sg-thumb { 
  width: 80px; 
  height: 60px; 
  border-radius: .75rem; 
  overflow: hidden; 
  border: 2px solid color-mix(in oklab, var(--muted) 30%, transparent); 
  cursor: pointer; 
  position: relative;
  transition: all .3s ease;
  background: var(--bg-elev);
}
.sg-thumb:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,.2);
}
.sg-thumb img { 
  width: 100%; 
  height: 100%; 
  object-fit: cover; 
  display: block;
  transition: transform .3s ease;
}
.sg-thumb:hover img {
  transform: scale(1.05);
}
.sg-thumb.active { 
  outline: 3px solid var(--primary); 
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary), 0 8px 25px color-mix(in oklab, var(--primary) 25%, transparent);
}


/* Products */
.tabs { display: flex; gap: .5rem; justify-content: center; margin-bottom: 1rem; flex-wrap: wrap; }
.tab { background: transparent; border: 1px solid color-mix(in oklab, var(--muted) 30%, transparent); color: var(--text); padding: .5rem .9rem; border-radius: .75rem; cursor: pointer; }
.tab.active { background: var(--primary); border-color: var(--primary); color: white; }

.tab-panels .panel { display: none; }
.tab-panels .panel.active { display: block; }

.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.product { background: var(--bg-elev); border: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); border-radius: .9rem; padding: 1rem; display: grid; gap: .5rem; }
.product-media { aspect-ratio: 16 / 10; border-radius: .6rem; background: radial-gradient(90% 90% at 50% 20%, color-mix(in oklab, var(--primary) 20%, transparent), transparent); border: 1px dashed color-mix(in oklab, var(--muted) 25%, transparent); }
.product-media img { width: 100%; height: 100%; object-fit: cover; border-radius: .6rem; }
.product h3 { margin: .5rem 0 0; font-size: 1rem; }
.product p { margin: 0; color: var(--muted); font-size: .95rem; }
.product .attrs { list-style: none; padding: .25rem 0 0; margin: .25rem 0 0; color: var(--muted); font-size: .9rem; display: grid; gap: .15rem; }
.product .attrs .k { color: var(--text); opacity: .9; }
.product-actions { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-top: .5rem; }
.price { font-weight: 700; color: var(--text); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; align-items: center; }
.list { list-style: none; padding: 0; margin: 0; color: var(--muted); }
.list li { margin: .35rem 0; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; align-items: start; }
.info-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px -8px color-mix(in oklab, var(--primary) 30%, transparent); border-color: color-mix(in oklab, var(--primary) 50%, transparent); }
.form { background: var(--bg-elev); border: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); border-radius: .9rem; padding: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.field { display: grid; gap: .35rem; }
.field.full { grid-column: 1 / -1; }
label { font-weight: 600; }
input, textarea { width: 100%; border: 1px solid color-mix(in oklab, var(--muted) 30%, transparent); background: transparent; color: var(--text); border-radius: .6rem; padding: .6rem .7rem; transition: border-color 0.2s, box-shadow 0.2s; }
input:focus, textarea:focus { outline: none; box-shadow: var(--ring); border-color: var(--primary); }
.form-actions { display: flex; gap: .6rem; align-items: center; }
.form-note { color: var(--muted); font-size: .9rem; }

/* Footer */
.site-footer { background: color-mix(in oklab, var(--bg) 92%, var(--bg-elev)); border-top: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1rem; padding: 2rem 0 1rem; }
.footer-grid h4 { margin: 0 0 .75rem; }
.muted { color: var(--muted); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 0; border-top: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); color: var(--muted); }

/* WhatsApp FAB */
.whatsapp-fab { position: fixed; right: 16px; bottom: 16px; display: grid; place-items: center; width: 56px; height: 56px; background: #25D366; color: #fff; border-radius: 999px; box-shadow: 0 10px 24px rgba(0,0,0,.25); font-size: 24px; text-decoration: none; }
.whatsapp-fab:hover { filter: brightness(0.95); text-decoration: none; }

/* Product Detail */
.product-detail { display: grid; grid-template-columns: 1.1fr .9fr; gap: 1rem; align-items: start; }
.gallery { display: grid; gap: .75rem; }
.gallery .main-image { background: var(--bg-elev); border: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); border-radius: .9rem; padding: .5rem; display: grid; place-items: center; }
.gallery .main-image img { width: 100%; height: auto; border-radius: .6rem; }
.thumbs { display: grid; grid-template-columns: repeat(6, 1fr); gap: .5rem; }
.thumb { background: var(--bg-elev); border: 1px solid color-mix(in oklab, var(--muted) 25%, transparent); border-radius: .5rem; padding: .25rem; cursor: pointer; }
.thumb img { width: 100%; height: 64px; object-fit: cover; border-radius: .35rem; display: block; }
.thumb.active { outline: 2px solid var(--primary); border-color: var(--primary); }
.detail-info h2 { margin: 0 0 .5rem; font-size: 1.1rem; }

/* Responsive */
@media (max-width: 980px) {
  .hero .hero-grid { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .product-detail { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-block; }
  .nav-links { position: fixed; inset: 64px 0 auto 0; transform: translateY(-200%); transition: transform .35s; background: var(--bg); border-bottom: 1px solid color-mix(in oklab, var(--muted) 20%, transparent); padding: 1rem; flex-direction: column; align-items: stretch; }
  .nav-links.open { transform: translateY(0); }
  .nav-links .cta-inline { display: block; }
}

@media (max-width: 560px) {
  .cards-grid { grid-template-columns: 1fr; }
  .sg-window { height: 240px; }
  .sg-item.is-next, .sg-item.is-prev { display: none; }
  .sg-item.is-current { transform: none; }
  .sg-item img { width: 100%; }
  .product-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  /* mobile: show controls */
  .sg-controls { display: flex; }
}