:root {
  --primary-color: #0d6efd;
  --secondary-color: #0dcaf0;
  --bg-color: #050510;
  --surface-color: rgba(20, 20, 35, 0.6);
  --surface-border: rgba(255, 255, 255, 0.1);
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --transition-speed: 0.3s;
}

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

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

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

/* Glassmorphism Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(5, 5, 16, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--surface-border);
  transition: all var(--transition-speed) ease;
}

.navbar.scrolled {
  padding: 1rem 5%;
  background: rgba(5, 5, 16, 0.85);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--primary-color);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links li a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: color var(--transition-speed);
  position: relative;
}

.nav-links li a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary-color);
  transition: width var(--transition-speed);
}

.nav-links li a:hover {
  color: var(--secondary-color);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  text-align: center;
  padding: 0 20px;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../images/hero_bg.png');
  background-size: cover;
  background-position: center;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(5, 5, 16, 0.5) 0%, rgba(5, 5, 16, 1) 100%);
  z-index: -1;
}

.hero-content {
  max-width: 900px;
  animation: fadeInUp 1s ease-out;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.1;
  background: linear-gradient(90deg, #ffffff, var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 50px;
  transition: all var(--transition-speed);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 4px 15px rgba(13, 110, 253, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 110, 253, 0.5);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(5px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

/* Sections */
section {
  padding: 6rem 5%;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.section-title::after {
  content: '';
  position: absolute;
  width: 50px;
  height: 3px;
  background: var(--primary-color);
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 2px;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.service-card {
  background: var(--surface-color);
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all var(--transition-speed);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.service-card:hover::before {
  transform: translateX(100%);
}

.service-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.service-icon {
  width: 70px;
  height: 70px;
  background: rgba(13, 110, 253, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--secondary-color);
}

.service-icon svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Featured App */
.app-section {
  background: linear-gradient(to right, rgba(5, 5, 16, 0.9), rgba(13, 110, 253, 0.05));
  border-top: 1px solid var(--surface-border);
  border-bottom: 1px solid var(--surface-border);
}

.app-container {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.app-content {
  flex: 1;
}

.app-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.app-content p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.app-features {
  list-style: none;
  margin-bottom: 2rem;
}

.app-features li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.app-features li svg {
  width: 20px;
  height: 20px;
  color: var(--secondary-color);
  fill: currentColor;
}

.app-image {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

.app-image img {
  max-width: 100%;
  border-radius: 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

/* Infrastructure */
.infra-container {
  display: flex;
  flex-direction: row-reverse;
  align-items: center;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
}

.infra-image img {
  max-width: 100%;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.infra-content {
  flex: 1;
}

/* Footer */
footer {
  background: #020205;
  padding: 4rem 5% 2rem;
  border-top: 1px solid var(--surface-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto 3rem;
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 1rem;
  max-width: 300px;
}

.footer-links h4 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
}

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

.footer-links ul li {
  margin-bottom: 0.8rem;
}

.footer-links ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-speed);
}

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

.footer-bottom {
  text-align: center;
  color: var(--text-secondary);
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  font-size: 0.9rem;
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease-out;
}

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

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

/* Responsive */
@media (max-width: 992px) {
  .hero h1 { font-size: 3rem; }
  .app-container, .infra-container { flex-direction: column; text-align: center; }
  .app-features li { justify-content: center; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background: rgba(10, 10, 20, 0.95);
    backdrop-filter: blur(15px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right 0.4s ease;
    border-left: 1px solid var(--surface-border);
  }
  .nav-links.active {
    right: 0;
  }
  .mobile-menu-btn {
    display: block;
    z-index: 1001;
  }
  .hero h1 { font-size: 2.5rem; }
  .section-title { font-size: 2rem; }
}