/* CSS Variables */
:root {
  --primary-color: #00D4AA;
  --primary-dark: #00B894;
  --primary-light: #00E5B8;
  --secondary-color: #6C5CE7;
  --accent-color: #FD79A8;
  
  --bg-primary: #0D1117;
  --bg-secondary: #161B22;
  --bg-tertiary: #21262D;
  --bg-card: #1C2128;
  
  --text-primary: #F0F6FC;
  --text-secondary: #8B949E;
  --text-muted: #6E7681;
  
  --border-color: #30363D;
  --border-hover: #484F58;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.3);
  
  --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  --gradient-hero: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  --border-radius-full: 9999px;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-light);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Loading Screen */
#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  text-align: center;
}

.binary-code {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.binary-code span {
  font-family: 'Courier New', monospace;
  font-size: 1.2rem;
  color: var(--primary-color);
  opacity: 0;
  animation: binaryFade 2s infinite;
}

.binary-code span:nth-child(1) { animation-delay: 0s; }
.binary-code span:nth-child(2) { animation-delay: 0.2s; }
.binary-code span:nth-child(3) { animation-delay: 0.4s; }
.binary-code span:nth-child(4) { animation-delay: 0.6s; }
.binary-code span:nth-child(5) { animation-delay: 0.8s; }

@keyframes binaryFade {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(13, 17, 23, 0.98);
  box-shadow: var(--shadow-lg);
}

.nav-container {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  gap: 8rem;
}

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

.nav-logo .logo-img {
  height: 40px;
  width: auto;
  transition: transform var(--transition-fast);
}

.nav-logo .logo-img:hover {
  transform: scale(1.05);
}

.nav-logo .logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  align-items: center;
  margin-left: auto;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
  background: rgba(0, 212, 170, 0.1);
}

.nav-link.contact-btn {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-full);
}

.nav-link.contact-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger .bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  transition: var(--transition-fast);
  border-radius: 2px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.particles {
  position: absolute;
  width: 100%;
  height: 100%;
}

.grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: none;
  opacity: 0;
  display: none;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.hero-content {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards;
}

.hero-title {
  margin-bottom: var(--spacing-xl);
}

.title-line {
  display: block;
}

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

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-2xl);
  max-width: 500px;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

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

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.hero-visual {
  opacity: 0;
  transform: translateX(30px);
  animation: fadeInRight 1s ease 0.3s forwards;
}

.code-animation {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  font-family: 'Courier New', monospace;
  position: relative;
  overflow: hidden;
}

.code-animation::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 170, 0.1), transparent);
  animation: scanLine 3s infinite;
}

.code-line {
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  animation: typeWriter 0.5s ease forwards;
}

.code-line:nth-child(1) { animation-delay: 1s; }
.code-line:nth-child(2) { animation-delay: 1.5s; }
.code-line:nth-child(3) { animation-delay: 2s; }
.code-line:nth-child(4) { animation-delay: 2.5s; }

.code-line.indent {
  padding-left: var(--spacing-lg);
}

.code-keyword { color: #FF7B72; }
.code-variable { color: #79C0FF; }
.code-operator { color: #FF7B72; }
.code-string { color: #A5D6FF; }
.code-function { color: #D2A8FF; }
.code-bracket { color: var(--text-primary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius-full);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-normal);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

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

/* Section Styles */
section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-text h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.feature-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.feature-content h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.feature-content p {
  margin: 0;
  font-size: 0.875rem;
}

.about-visual {
  display: flex;
  justify-content: center;
}

.tech-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.tech-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  text-align: center;
  font-weight: 600;
  color: var(--primary-color);
  transition: all var(--transition-normal);
}

.tech-item:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-glow);
}

/* Services Section */
.services {
  position: relative;
  overflow: hidden;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

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

.service-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-xl);
}

.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(0, 212, 170, 0.1);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--primary-color);
}

.service-icon svg {
  width: 30px;
  height: 30px;
}

.service-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.service-features {
  list-style: none;
  margin-top: var(--spacing-lg);
}

.service-features li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Workflow Section */
.workflow {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.workflow-steps {
  display: grid;
  gap: var(--spacing-2xl);
}

.workflow-step {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: var(--spacing-xl);
  align-items: flex-start;
  position: relative;
}

.workflow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 30px;
  top: 80px;
  width: 2px;
  height: calc(100% + var(--spacing-2xl));
  background: linear-gradient(to bottom, var(--primary-color), transparent);
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: white;
  position: relative;
  z-index: 1;
}

.step-icon {
  width: 60px;
  height: 60px;
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

.step-icon svg {
  width: 30px;
  height: 30px;
}

.step-content h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.step-content ul {
  list-style: none;
  margin-top: var(--spacing-md);
}

.step-content li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
}

.step-content li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--primary-color);
}

/* Portfolio Section */
.portfolio {
  position: relative;
  overflow: hidden;
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.portfolio-item {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
}

.portfolio-image {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  position: relative;
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-info {
  text-align: center;
  padding: var(--spacing-lg);
}

.portfolio-info h3 {
  color: white;
  margin-bottom: var(--spacing-sm);
}

.portfolio-info p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-md);
}

.portfolio-tags {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.portfolio-tags span {
  background: rgba(0, 212, 170, 0.2);
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

/* Testimonials Section */
.testimonials {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
}

.testimonial-content {
  margin-bottom: var(--spacing-lg);
}

.quote-icon {
  font-size: 3rem;
  color: var(--primary-color);
  line-height: 1;
  margin-bottom: var(--spacing-md);
}

.testimonial-content p {
  font-style: italic;
  margin: 0;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

.author-info h4 {
  color: var(--text-primary);
  margin: 0;
  font-size: 1rem;
}

.author-info p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.875rem;
}

/* FAQ Section */
.faq {
  position: relative;
  overflow: hidden;
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item:hover {
  border-color: var(--primary-color);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: rgba(0, 212, 170, 0.05);
}

.faq-question h3 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.125rem;
}

.faq-toggle {
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-answer p {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  margin: 0;
}

/* Contact Section */
.contact {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: rgba(0, 212, 170, 0.1);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-details h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.contact-details p {
  margin: 0;
  color: var(--text-secondary);
}

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

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  color: var(--text-primary);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

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

.contact-options {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.contact-options .btn {
  flex: 1;
  min-width: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.contact-options .btn svg {
  flex-shrink: 0;
}

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-logo .logo-img {
  height: 40px;
}

.footer-logo .logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.footer-description {
  max-width: 300px;
  margin-bottom: var(--spacing-lg);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

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

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-color);
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.newsletter-form input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--primary-color);
}

.newsletter-form .btn {
  padding: var(--spacing-sm) var(--spacing-lg);
}

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

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-lg);
}

.footer-bottom-links a {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

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

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

@keyframes typeWriter {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scanLine {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-2xl);
    transition: left var(--transition-normal);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .nav-logo .logo-text {
    font-size: 1rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .workflow-step {
    grid-template-columns: auto 1fr;
    gap: var(--spacing-lg);
  }
  
  .step-icon {
    display: none;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-container {
    padding: var(--spacing-md);
  }
  
  section {
    padding: var(--spacing-2xl) 0;
  }
  
  .hero-stats {
    flex-direction: row;
    justify-content: space-around;
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .back-to-top {
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
  }
}

/* Utility Classes */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all var(--transition-slow);
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all var(--transition-slow);
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}