/* ============================================
   LogicTrix Infotech — Design System
   ============================================ */

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

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Color Palette */
  --color-bg-primary:    #0a0e1a;
  --color-bg-secondary:  #0f1526;
  --color-bg-card:       rgba(15, 21, 38, 0.7);
  --color-bg-glass:      rgba(255, 255, 255, 0.04);
  --color-bg-glass-hover:rgba(255, 255, 255, 0.08);

  --color-accent-blue:   #3b82f6;
  --color-accent-cyan:   #06b6d4;
  --color-accent-purple: #8b5cf6;
  --color-accent-green:  #22c55e;
  --color-accent-pink:   #ec4899;
  --color-accent-orange: #f97316;

  --color-text-primary:  #f1f5f9;
  --color-text-secondary:#94a3b8;
  --color-text-muted:    #64748b;

  --color-border:        rgba(255, 255, 255, 0.06);
  --color-border-hover:  rgba(255, 255, 255, 0.12);

  /* Gradients */
  --gradient-hero:       linear-gradient(135deg, #0a0e1a 0%, #0f1526 40%, #131b33 100%);
  --gradient-accent:     linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-accent-alt: linear-gradient(135deg, #06b6d4, #3b82f6);
  --gradient-card:       linear-gradient(145deg, rgba(59,130,246,0.08), rgba(139,92,246,0.04));
  --gradient-whatsapp:   linear-gradient(135deg, #22c55e, #16a34a);
  --gradient-instagram:  linear-gradient(135deg, #ec4899, #f97316);

  /* Shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 30px rgba(59,130,246,0.15);
  --shadow-glow-strong: 0 0 60px rgba(59,130,246,0.25);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 120px 0;
  --container-max:   1200px;
  --nav-height:      80px;

  /* Transitions */
  --transition-fast:   150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:   500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Border Radius */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full:50%;
}

/* ---------- 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-primary);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul, ol { list-style: none; }

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--gradient-accent-alt);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

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

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-bg-glass);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-2px);
}

.btn-icon {
  font-size: 1.1em;
}

/* ---------- Navigation ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 1001;
}

.nav-logo img {
  height: 42px;
  width: auto;
}

.nav-logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-logo-text .accent {
  color: var(--color-accent-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  position: relative;
  padding: 4px 0;
}

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

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

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

.nav-cta {
  padding: 10px 24px !important;
  font-size: 0.88rem !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  z-index: 1001;
  background: none;
  border: none;
  padding: 4px;
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,26,0.3) 0%, rgba(10,14,26,0.7) 50%, var(--color-bg-primary) 100%);
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent-blue);
  opacity: 0;
  animation: particleFloat 8s infinite;
}

@keyframes particleFloat {
  0%   { opacity: 0; transform: translateY(100vh) scale(0); }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-10vh) scale(1.2); }
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content { max-width: 600px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.2);
  border-radius: var(--radius-xl);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-accent-green);
  margin-bottom: 28px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(1.3); }
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
}

.hero h1 .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 520px;
}

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

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--color-border);
}

.hero-stat h3 {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-accent-alt);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

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

.hero-visual-img {
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border: 1px solid var(--color-border);
}

.hero-float-card {
  position: absolute;
  padding: 14px 20px;
  background: rgba(15,21,38,0.85);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: floatCard 6s ease-in-out infinite;
}

.hero-float-card.card-1 {
  top: 10%;
  right: -10%;
  animation-delay: 0s;
}

.hero-float-card.card-2 {
  bottom: 15%;
  left: -5%;
  animation-delay: 2s;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

.float-card-icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.float-card-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.float-card-value {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ---------- Trusted By / Logos Bar ---------- */
.trusted-bar {
  padding: 60px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.trusted-bar .container {
  text-align: center;
}

.trusted-bar p {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 32px;
}

.trusted-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.trusted-logo-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

.trusted-logo-item:hover {
  color: var(--color-text-secondary);
}

.trusted-logo-item svg,
.trusted-logo-item img {
  width: 28px;
  height: 28px;
  opacity: 0.6;
}

/* ---------- Services Section ---------- */
.services {
  padding: var(--section-padding);
  position: relative;
}

.services-header {
  text-align: center;
  margin-bottom: 72px;
}

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

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 36px 30px;
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.service-icon.icon-blue   { background: rgba(59,130,246,0.12); color: #3b82f6; }
.service-icon.icon-purple { background: rgba(139,92,246,0.12); color: #8b5cf6; }
.service-icon.icon-green  { background: rgba(34,197,94,0.12);  color: #22c55e; }
.service-icon.icon-cyan   { background: rgba(6,182,212,0.12);  color: #06b6d4; }
.service-icon.icon-pink   { background: rgba(236,72,153,0.12); color: #ec4899; }
.service-icon.icon-orange { background: rgba(249,115,22,0.12); color: #f97316; }

/* Ensure SVGs inside icon containers inherit color and size correctly */
.service-icon svg,
.product-feature-icon svg,
.project-icon svg,
.about-value-icon svg,
.float-card-icon svg,
.btn-icon svg,
.footer-social a svg,
.back-to-top svg,
.project-status svg {
  flex-shrink: 0;
  display: block;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.service-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 12px;
  background: rgba(59,130,246,0.08);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent-blue);
}

/* ---------- Product Section (Vartalaap) ---------- */
.product {
  padding: var(--section-padding);
  position: relative;
  background: var(--color-bg-secondary);
}

.product-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.product-visual {
  position: relative;
}

.product-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow-strong);
  border: 1px solid var(--color-border);
}

.product-content { max-width: 540px; }

.product-content .section-title {
  margin-bottom: 20px;
}

.product-content > p {
  margin-bottom: 36px;
}

.product-features {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
}

.product-feature {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.product-feature-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1.3rem;
}

.product-feature-icon.wa   { background: rgba(34,197,94,0.12); }
.product-feature-icon.ig   { background: rgba(236,72,153,0.12); }
.product-feature-icon.mail { background: rgba(59,130,246,0.12); }
.product-feature-icon.api  { background: rgba(6,182,212,0.12); }

.product-feature h4 {
  font-size: 0.98rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.product-feature p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.meta-partner {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 36px;
  padding: 16px 20px;
  background: rgba(59,130,246,0.05);
  border: 1px solid rgba(59,130,246,0.12);
  border-radius: var(--radius-md);
}

.meta-partner img {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
}

.meta-partner-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.meta-partner-text span {
  display: block;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ---------- Projects / Portfolio ---------- */
.projects {
  padding: var(--section-padding);
  position: relative;
}

.projects-header {
  text-align: center;
  margin-bottom: 72px;
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  position: relative;
  padding: 36px 32px;
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

.project-card:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}

.project-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.5rem;
}

.project-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-status.completed {
  background: rgba(34,197,94,0.1);
  color: var(--color-accent-green);
}

.project-status.live {
  background: rgba(59,130,246,0.1);
  color: var(--color-accent-blue);
}

.project-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.project-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.project-tech {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.project-tech span {
  padding: 4px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

/* ---------- About Section ---------- */
.about {
  padding: var(--section-padding);
  background: var(--color-bg-secondary);
  position: relative;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.about-content .section-subtitle {
  margin-bottom: 32px;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}

.about-value {
  padding: 20px;
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.about-value:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-border-hover);
}

.about-value-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.about-value h4 {
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-value p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ---------- CTA Section ---------- */
.cta {
  padding: var(--section-padding);
  position: relative;
  overflow: hidden;
}

.cta-inner {
  position: relative;
  text-align: center;
  padding: 80px 40px;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.cta-inner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(59,130,246,0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(139,92,246,0.06) 0%, transparent 50%);
  animation: ctaGlow 8s ease-in-out infinite alternate;
}

@keyframes ctaGlow {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(10deg); }
}

.cta-inner > * {
  position: relative;
  z-index: 1;
}

.cta h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta p {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer {
  padding: 80px 0 40px;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-bg-glass);
  border: 1px solid var(--color-border);
  font-size: 1.1rem;
  transition: all var(--transition-base);
}

.footer-social a:hover {
  background: var(--color-bg-glass-hover);
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  transform: translateY(-2px);
}

.footer-column h4 {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 20px;
  color: var(--color-text-primary);
}

.footer-column a {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  padding: 6px 0;
  transition: all var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-accent-blue);
  padding-left: 6px;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-bottom-links a:hover {
  color: var(--color-accent-blue);
}

/* ---------- Scroll Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }
.reveal-delay-6 { transition-delay: 600ms; }

/* ---------- Counter Animation ---------- */
.counter { display: inline-block; }

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  border: none;
  border-radius: var(--radius-full);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  box-shadow: 0 4px 20px rgba(59,130,246,0.3);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.5);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); }

  .hero p { margin: 0 auto 36px; }

  .hero-buttons { justify-content: center; }

  .hero-stats { justify-content: center; }

  .hero-visual { display: none; }

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

  .product-inner,
  .about-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .product-content,
  .about-content {
    max-width: 100%;
  }

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

@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
    --nav-height: 68px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    flex-direction: column;
    background: rgba(10,14,26,0.98);
    backdrop-filter: blur(20px);
    padding: 100px 40px 40px;
    gap: 24px;
    align-items: flex-start;
    transition: right var(--transition-base);
    border-left: 1px solid var(--color-border);
  }

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

  .nav-links a {
    font-size: 1.05rem;
  }

  .nav-hamburger {
    display: flex;
  }

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

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

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .about-values {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .cta-inner {
    padding: 60px 24px;
  }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }

  .hero h1 { font-size: 2rem; }

  .section-title { font-size: 1.8rem; }

  .hero-buttons { flex-direction: column; align-items: center; }

  .btn { width: 100%; justify-content: center; }
}

/* ---------- Mobile Nav Overlay ---------- */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}