:root {
  --bg-primary: #0a0b10;
  --bg-secondary: #121520;
  --bg-card: rgba(22, 27, 41, 0.7);
  --bg-card-hover: rgba(28, 35, 54, 0.9);
  --border-color: rgba(0, 229, 255, 0.15);
  --border-glow: rgba(0, 229, 255, 0.4);
  
  --cyan-neon: #00e5ff;
  --purple-neon: #8a2be2;
  --blue-neon: #0070f3;
  --accent-gradient: linear-gradient(135deg, #00e5ff 0%, #7928ca 100%);
  --glow-shadow: 0 0 20px rgba(0, 229, 255, 0.35);
  
  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(0, 229, 255, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 85% 65%, rgba(138, 43, 226, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 11, 16, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-img {
  height: 52px;
  width: auto;
  border-radius: 50%;
  filter: drop-shadow(0 0 10px rgba(0, 229, 255, 0.4));
  transition: var(--transition);
}

.logo-img:hover {
  transform: scale(1.05) rotate(2deg);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--cyan-neon);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--cyan-neon);
  transition: var(--transition);
}

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

.btn-whatsapp-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--cyan-neon);
  border-radius: var(--radius-sm);
  color: var(--cyan-neon);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.btn-whatsapp-nav:hover {
  background: var(--cyan-neon);
  color: #000;
  box-shadow: var(--glow-shadow);
  transform: translateY(-2px);
}

/* HERO SECTION */
.hero {
  padding: 100px 0 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 60px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  color: var(--cyan-neon);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--cyan-neon);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--cyan-neon);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--accent-gradient);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 26px rgba(0, 229, 255, 0.5);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--cyan-neon);
  color: var(--cyan-neon);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-glow {
  position: absolute;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.25) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 1;
}

.hero-card {
  position: relative;
  z-index: 2;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.hero-img {
  width: 100%;
  max-width: 360px;
  border-radius: var(--radius-md);
  display: block;
}

.hero-stats {
  display: flex;
  justify-content: space-around;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.stat-value {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--cyan-neon);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* FEATURES STRIP */
.features-strip {
  padding: 40px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}

.feature-box {
  display: flex;
  align-items: center;
  gap: 16px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--cyan-neon);
}

.feature-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.feature-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* CATALOG SECTION */
.catalog-section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-tag {
  color: var(--cyan-neon);
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
  display: inline-block;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.section-subtitle {
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto;
}

/* FILTER BUTTONS */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 22px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--cyan-neon);
  color: #000;
  border-color: var(--cyan-neon);
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.35);
}

/* PRODUCTS GRID */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--cyan-neon);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.2);
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: rgba(0, 229, 255, 0.15);
  border: 1px solid var(--cyan-neon);
  color: var(--cyan-neon);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 50px;
  z-index: 2;
}

.product-preview {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 18px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
  border-radius: var(--radius-sm);
}

.filament-spool {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 12px solid #222;
  box-shadow: inset 0 0 15px rgba(0, 0, 0, 0.8), 0 0 20px var(--spool-color, var(--cyan-neon));
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.product-card:hover .filament-spool {
  transform: scale(1.06) rotate(15deg);
}

.spool-inner {
  width: 50px;
  height: 50px;
  background: #111;
  border: 4px solid #333;
  border-radius: 50%;
}

.product-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-category {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 4px;
}

.product-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-specs {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.product-price {
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
}

.product-price span {
  font-size: 0.85rem;
  color: var(--cyan-neon);
  font-weight: 600;
}

.btn-buy {
  padding: 10px 16px;
  background: rgba(0, 229, 255, 0.12);
  border: 1px solid var(--cyan-neon);
  color: var(--cyan-neon);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.btn-buy:hover {
  background: var(--cyan-neon);
  color: #000;
  box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
}

/* ABOUT / STUDIO SECTION */
.about-section {
  padding: 90px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
}

.about-card-img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.about-qr-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
  padding: 16px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--radius-md);
}

.about-qr-img {
  width: 90px;
  height: 90px;
  border-radius: 8px;
}

.about-qr-text {
  text-align: left;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.about-qr-text strong {
  display: block;
  color: var(--cyan-neon);
  font-size: 0.95rem;
}

/* FOOTER */
.footer {
  padding: 70px 0 30px;
  background: #06070a;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 50px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.footer-links a:hover {
  color: var(--cyan-neon);
  transform: translateX(4px);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* WHATSAPP FLOAT BUTTON */
.whatsapp-float {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-4px);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid, .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-description {
    margin: 0 auto 30px;
  }
  .hero-actions {
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
}