:root {
  --bg-primary: #0A0E17;
  --bg-secondary: #111827;
  --bg-card: #1a1f2e;
  --bg-card-hover: #222840;
  --accent: #00D4FF;
  --accent-alt: #0EA5E9;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255,255,255,0.06);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-links a:hover::after { width: 100%; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: var(--font);
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  color: var(--bg-primary);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}
.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
}
.btn-outline:hover {
  background: var(--accent);
  color: var(--bg-primary);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  width: 26px; height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.15;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,14,23,0.6) 0%, var(--bg-primary) 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
}
.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: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 24px;
}
.hero-badge::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--accent), var(--accent-alt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}
.hero-stats {
  display: flex;
  gap: 40px;
}
.hero-stat {
  text-align: center;
}
.hero-stat-circle {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
  margin: 0 auto 8px;
  position: relative;
  background: rgba(0,212,255,0.05);
}
.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.hero-right {
  position: relative;
}
.hero-feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.hero-feature-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-alt));
}
.hero-feature-box h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.hero-feature-box h3 span { color: var(--accent); }
.feature-labels {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.feature-label {
  padding: 6px 18px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  padding: 4px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.section-subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ===== SERVICES ===== */
.services { background: var(--bg-secondary); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,212,255,0.2);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 56px; height: 56px;
  background: var(--accent-glow);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
}
.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
}
.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}
.services-cta {
  text-align: center;
  margin-top: 48px;
}

/* ===== STATS ===== */
.stats {
  background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(14,165,233,0.05));
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item {
  text-align: center;
  padding: 24px;
}
.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}
.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ===== FEATURES ===== */
.features .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.features-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}
.features-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  color: var(--text-secondary);
}
.features-list li .check {
  width: 24px; height: 24px;
  background: var(--accent-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
  font-size: 0.75rem;
  margin-top: 2px;
}
.features-boxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}
.feature-box:hover {
  border-color: rgba(0,212,255,0.2);
  transform: translateY(-4px);
}
.feature-box-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}
.feature-box h4 {
  font-size: 0.95rem;
  margin-bottom: 6px;
}
.feature-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== PROCESS ===== */
.process { background: var(--bg-secondary); }
.timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  padding-left: 60px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-alt), transparent);
}
.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  transition: var(--transition);
}
.timeline-item:hover {
  border-color: rgba(0,212,255,0.2);
  transform: translateX(6px);
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -48px;
  top: 28px;
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg-secondary);
  box-shadow: 0 0 12px rgba(0,212,255,0.4);
}
.timeline-number {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 4px;
}
.timeline-item h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}
.timeline-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== CLIENTS ===== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.client-card:hover {
  border-color: rgba(0,212,255,0.2);
  transform: translateY(-4px);
}
.client-logo {
  width: 48px; height: 48px;
  background: var(--accent-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--accent);
}
.client-card span {
  font-weight: 600;
  font-size: 0.95rem;
}

/* ===== PROJECTS ===== */
.projects { background: var(--bg-secondary); }
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}
.filter-tab {
  padding: 8px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
}
.filter-tab:hover, .filter-tab.active {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  border-color: rgba(0,212,255,0.2);
}
.project-card[data-visible="false"] {
  display: none;
}
.project-img {
  height: 200px;
  overflow: hidden;
  position: relative;
}
.project-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.project-card:hover .project-img img {
  transform: scale(1.05);
}
.project-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,14,23,0.8) 100%);
}
.project-info {
  padding: 24px;
}
.project-tag {
  display: inline-block;
  padding: 3px 12px;
  background: var(--accent-glow);
  border-radius: 50px;
  font-size: 0.7rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.project-info h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.project-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: var(--transition);
}
.testimonial-card:hover {
  border-color: rgba(0,212,255,0.2);
  transform: translateY(-4px);
}
.testimonial-stars {
  color: #fbbf24;
  font-size: 0.9rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.testimonial-card blockquote {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent);
  font-size: 1rem;
}
.testimonial-author h4 {
  font-size: 0.95rem;
}
.testimonial-author span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== CONTACT ===== */
.contact { background: var(--bg-secondary); }
.contact .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 20px;
}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-info-icon {
  width: 48px; height: 48px;
  background: var(--accent-glow);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}
.contact-info-item h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}
.contact-info-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-form h3 {
  font-size: 1.3rem;
  margin-bottom: 24px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}
.form-group textarea {
  height: 120px;
  resize: vertical;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-about p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 340px;
}
.footer h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer h4::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 30px; height: 2px;
  background: var(--accent);
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.footer-contact li span:first-child {
  color: var(--accent);
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ===== RESPONSIVE 1024px ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero h1 { font-size: 2.8rem; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .features .container { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(4, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .contact .container { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== RESPONSIVE 768px ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    gap: 20px;
  }
  .hamburger { display: flex; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { gap: 20px; }
  .hero-stat-circle { width: 64px; height: 64px; font-size: 1rem; }
  .section-title { font-size: 2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .features-boxes { grid-template-columns: 1fr 1fr; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-buttons { flex-direction: column; }
  .filter-tabs { gap: 8px; }
  .filter-tab { padding: 6px 16px; font-size: 0.8rem; }
}