/* ============================================
   BLACK MAMBA DRILLS — Design System & Styles
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap');

/* --- CSS Custom Properties --- */
:root {
  /* Brand Colors */
  --gold-50: #FFF9E6;
  --gold-100: #FFF0B3;
  --gold-200: #FFE680;
  --gold-300: #FFDB4D;
  --gold-400: #FFD11A;
  --gold-500: #E6B800;
  --gold-600: #CC9E00;
  --gold-700: #B38600;
  --gold-800: #996D00;
  --gold-900: #805500;

  --black-50: #F5F5F5;
  --black-100: #E0E0E0;
  --black-200: #B0B0B0;
  --black-300: #808080;
  --black-400: #505050;
  --black-500: #2A2A2A;
  --black-600: #1F1F1F;
  --black-700: #171717;
  --black-800: #0F0F0F;
  --black-900: #080808;

  /* Semantic Colors */
  --bg-primary: #0A0A0A;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-card-hover: #1C1C1C;
  --bg-glass: rgba(22, 22, 22, 0.75);

  --text-primary: #FFFFFF;
  --text-secondary: #A0A0A0;
  --text-muted: #666666;
  --text-accent: var(--gold-400);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(255, 209, 26, 0.2);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, var(--gold-400), var(--gold-600));
  --gradient-dark: linear-gradient(180deg, #0A0A0A 0%, #111111 100%);
  --gradient-hero: linear-gradient(180deg, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.85) 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,209,26,0.04) 0%, rgba(255,209,26,0) 100%);

  /* Typography */
  --font-display: 'Outfit', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Borders & Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-gold: 0 4px 24px rgba(255, 209, 26, 0.15);
  --shadow-gold-lg: 0 8px 40px rgba(255, 209, 26, 0.25);

  /* Transitions */
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --transition-fast: 200ms var(--ease-out);
  --transition-normal: 350ms var(--ease-out);
  --transition-slow: 600ms var(--ease-in-out);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul { list-style: none; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
  background: var(--black-400);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--gold-600);
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--gradient-gold);
  border-radius: var(--radius-full);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

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

/* --- Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-xl) 0;
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.navbar.scrolled {
  padding: var(--space-sm) 0;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav-logo-img {
  height: 70px;
  width: auto;
  object-fit: contain;
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  filter: drop-shadow(0 0 12px rgba(255, 209, 26, 0.35));
}

.nav-logo:hover .nav-logo-img {
  filter: drop-shadow(0 0 20px rgba(255, 209, 26, 0.55));
  transform: scale(1.04);
}

.navbar.scrolled .nav-logo-img {
  height: 44px;
  filter: drop-shadow(0 0 8px rgba(255, 209, 26, 0.25));
}

.footer-brand .nav-logo-img {
  height: 72px;
  filter: drop-shadow(0 0 14px rgba(255, 209, 26, 0.3));
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  transition: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  text-shadow: 0 0 20px rgba(255, 209, 26, 0.15);
}

.navbar.scrolled .nav-logo-text {
  font-size: 1.2rem;
}

.nav-logo-text span {
  color: var(--gold-400);
}

.footer-brand .nav-logo-text {
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-gold);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  font-family: var(--font-display) !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  background: var(--gradient-gold) !important;
  color: var(--bg-primary) !important;
  padding: var(--space-sm) var(--space-xl) !important;
  border-radius: var(--radius-full) !important;
  transition: all var(--transition-fast) !important;
  letter-spacing: 0.04em !important;
}

.nav-cta::after { display: none !important; }

.nav-cta:hover {
  box-shadow: var(--shadow-gold) !important;
  transform: translateY(-2px) !important;
}

/* Mobile Menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  width: 28px;
  height: 24px;
  justify-content: center;
  background: none;
  border: none;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  0% { transform: scale(1.05); }
  100% { transform: scale(1.15); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 10, 0.4) 0%,
    rgba(10, 10, 10, 0.6) 40%,
    rgba(10, 10, 10, 0.92) 100%
  );
  z-index: 1;
}

.hero-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 30% 50%,
    rgba(255, 209, 26, 0.05) 0%,
    transparent 60%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(255, 209, 26, 0.1);
  border: 1px solid rgba(255, 209, 26, 0.2);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gold-400);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-400);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s var(--ease-out) 0.4s both;
}

.hero-title .line {
  display: block;
}

.hero-description {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s var(--ease-out) 0.6s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  animation: fadeInUp 0.8s var(--ease-out) 0.8s both;
}

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

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  background: var(--gradient-gold);
  color: var(--bg-primary);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.btn-primary:hover {
  box-shadow: var(--shadow-gold-lg);
  transform: translateY(-3px);
}

.btn-primary svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.btn-outline:hover {
  border-color: var(--gold-400);
  color: var(--gold-400);
  background: rgba(255, 209, 26, 0.05);
}

/* Hero Stats */
.hero-stats {
  position: absolute;
  bottom: var(--space-4xl);
  right: var(--space-xl);
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  animation: fadeInUp 0.8s var(--ease-out) 1s both;
}

.hero-stat {
  text-align: right;
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  animation: fadeInUp 0.8s var(--ease-out) 1.2s both;
}

.scroll-indicator .mouse {
  width: 24px;
  height: 38px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .mouse::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--gold-400);
  border-radius: var(--radius-full);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

.scroll-indicator span {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
  padding: var(--space-5xl) 0;
  background: var(--bg-secondary);
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.features-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.features-header .section-label {
  justify-content: center;
}

.features-header .section-subtitle {
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 52px;
  height: 52px;
  background: rgba(255, 209, 26, 0.08);
  border: 1px solid rgba(255, 209, 26, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  transition: all var(--transition-fast);
}

.feature-card:hover .feature-icon {
  background: rgba(255, 209, 26, 0.12);
  border-color: rgba(255, 209, 26, 0.3);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--gold-400);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   PRODUCT / SPECS SECTION
   ============================================ */
.product {
  padding: var(--space-5xl) 0;
  position: relative;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.product-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.product-image-wrapper::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  z-index: 1;
  pointer-events: none;
}

.product-image-wrapper img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-image-wrapper:hover img {
  transform: scale(1.05);
}

.product-model-badge {
  position: absolute;
  top: var(--space-lg);
  left: var(--space-lg);
  z-index: 2;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(10px);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-accent);
}

.product-model-badge span {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gold-400);
  letter-spacing: 0.08em;
}

.product-info .section-title {
  margin-top: var(--space-md);
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

.spec-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
}

.spec-item:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.spec-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.spec-value {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gold-400);
}

/* ============================================
   APPLICATIONS SECTION
   ============================================ */
.applications {
  padding: var(--space-5xl) 0;
  background: var(--bg-secondary);
  position: relative;
}

.applications::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.applications-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.applications-header .section-label {
  justify-content: center;
}

.applications-header .section-subtitle {
  margin: 0 auto;
}

.applications-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.application-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 380px;
  cursor: pointer;
  group: true;
}

.application-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.application-card:hover img {
  transform: scale(1.1);
}

.application-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 30%,
    rgba(10, 10, 10, 0.95) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-2xl);
  transition: background var(--transition-normal);
}

.application-card:hover .application-overlay {
  background: linear-gradient(
    180deg,
    rgba(10, 10, 10, 0.2) 0%,
    rgba(10, 10, 10, 0.98) 100%
  );
}

.application-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold-400);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-sm);
}

.application-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.application-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-normal);
}

.application-card:hover p {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   GALLERY SECTION
   ============================================ */
.gallery {
  padding: var(--space-5xl) 0;
  position: relative;
}

.gallery-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.gallery-header .section-label {
  justify-content: center;
}

.gallery-header .section-subtitle {
  margin: 0 auto;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
}

.gallery-item.featured {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-normal);
}

.gallery-item:hover .gallery-item-overlay {
  background: rgba(10, 10, 10, 0.4);
}

.gallery-item-overlay svg {
  width: 32px;
  height: 32px;
  color: var(--gold-400);
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition-normal);
}

.gallery-item:hover .gallery-item-overlay svg {
  opacity: 1;
  transform: scale(1);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  backdrop-filter: blur(20px);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.lightbox.active img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: var(--space-xl);
  right: var(--space-xl);
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: white;
  font-size: 1.2rem;
}

.lightbox-close:hover {
  background: rgba(255, 209, 26, 0.2);
  border-color: var(--gold-400);
  color: var(--gold-400);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: white;
  font-size: 1.2rem;
}

.lightbox-nav:hover {
  background: rgba(255, 209, 26, 0.2);
  border-color: var(--gold-400);
  color: var(--gold-400);
}

.lightbox-prev { left: var(--space-xl); }
.lightbox-next { right: var(--space-xl); }

/* ============================================
   SPECS DETAIL SECTION
   ============================================ */
.specs-detail {
  padding: var(--space-5xl) 0;
  background: var(--bg-secondary);
  position: relative;
}

.specs-detail::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.specs-detail-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.specs-detail-header .section-label {
  justify-content: center;
}

.specs-detail-header .section-subtitle {
  margin: 0 auto;
}

.specs-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.spec-tab {
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  letter-spacing: 0.04em;
}

.spec-tab.active,
.spec-tab:hover {
  background: rgba(255, 209, 26, 0.1);
  border-color: var(--gold-400);
  color: var(--gold-400);
}

.specs-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table tr {
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-fast);
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-table tr:hover {
  background: rgba(255, 209, 26, 0.03);
}

.specs-table td {
  padding: var(--space-lg) var(--space-xl);
  font-size: 0.95rem;
}

.specs-table td:first-child {
  color: var(--text-secondary);
  font-weight: 500;
  width: 45%;
}

.specs-table td:last-child {
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-display);
}

/* ============================================
   CONTACT / CTA SECTION
   ============================================ */
.contact {
  padding: var(--space-5xl) 0;
  position: relative;
}

.contact-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.contact-wrapper::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 209, 26, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  position: relative;
  z-index: 1;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.contact-info p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: var(--space-2xl);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.contact-method-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 209, 26, 0.08);
  border: 1px solid rgba(255, 209, 26, 0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-method-icon svg {
  width: 20px;
  height: 20px;
  color: var(--gold-400);
}

.contact-method-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-method-text a,
.contact-method-text span {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.contact-method-text a:hover {
  color: var(--gold-400);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--gold-400);
  background: rgba(255, 209, 26, 0.03);
  box-shadow: 0 0 0 3px rgba(255, 209, 26, 0.08);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-4xl) 0 var(--space-xl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: var(--space-lg);
  max-width: 320px;
}

.footer h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.footer ul li {
  margin-bottom: var(--space-sm);
}

.footer ul li a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer ul li a:hover {
  color: var(--gold-400);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: rgba(255, 209, 26, 0.1);
  border-color: var(--gold-400);
}

.footer-social svg {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-social a:hover svg {
  color: var(--gold-400);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-2xl);
    padding: var(--space-2xl);
    transition: right var(--transition-normal);
    border-left: 1px solid var(--border-subtle);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-stats {
    display: none;
  }

  .hero-title {
    font-size: clamp(2.2rem, 8vw, 3.5rem);
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .applications-grid {
    grid-template-columns: 1fr;
  }

  .application-card {
    height: 280px;
  }

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

  .gallery-item.featured {
    grid-column: span 2;
  }

  .specs-tabs {
    flex-wrap: wrap;
  }

  .specs-table td {
    padding: var(--space-md);
    font-size: 0.85rem;
  }

  .contact-wrapper {
    padding: var(--space-2xl);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

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

  .gallery-item.featured {
    grid-column: span 1;
    grid-row: span 1;
  }

  .specs-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Particle Canvas Background --- */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  opacity: 0.3;
}

/* ============================================
   FLOATING WHATSAPP BUTTON
   ============================================ */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  z-index: 999;
  transition: all 0.3s var(--ease-out);
  animation: pulse-wa 2s infinite;
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

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

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

@keyframes pulse-wa {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

@media (max-width: 480px) {
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
  }

  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}