:root {
  --primary-color: #00d2ff;
  --secondary-color: #3a7bd5;
  --bg-dark: #0a0a0a;
  --bg-light: #121212;
  --text-main: #ffffff;
  --text-muted: #a0a0a0;
  --container-width: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: opacity 0.3s, color 0.3s;
}

a:hover {
  opacity: 0.8;
}

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header & Nav */
.header {
  padding: 30px 0;
  position: absolute;
  width: 100%;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  height: 100px;
  width: auto;
}

.logo-text {
  font-weight: 700;
  font-size: 1.6rem;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  color: var(--text-main);
  font-weight: 500;
  font-size: 1rem;
}

.nav-links a:hover {
  color: var(--primary-color);
  opacity: 1;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: radial-gradient(circle at 80% 20%, rgba(0, 210, 255, 0.15) 0%, transparent 40%),
              radial-gradient(circle at 20% 80%, rgba(58, 123, 213, 0.1) 0%, transparent 40%),
              linear-gradient(180deg, #0a0a0a 0%, #001219 100%);
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3%3Cpath fill='%23121212' fill-opacity='1' d='M0,160L48,176C96,192,192,224,288,224C384,224,480,192,576,165.3C672,139,768,117,864,128C960,139,1056,181,1152,192C1248,203,1344,181,1392,170.7L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
  background-size: cover;
  background-repeat: no-repeat;
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 850px;
}

.hero h1 {
  font-size: clamp(2.2rem, 8vw, 4.5rem);
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 30%, #a0a0a0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-tagline {
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  color: var(--text-muted);
  margin-bottom: 48px;
  max-width: 650px;
  font-weight: 400;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.btn {
  display: inline-block;
  padding: 18px 36px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(0, 210, 255, 0.25);
  opacity: 1;
}

/* Sections */
.section {
  padding: 120px 0;
}

.section.dark {
  background-color: var(--bg-light);
}

.section-header {
  margin-bottom: 72px;
}

.section-header h2 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  margin-bottom: 24px;
  font-weight: 700;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.25rem;
  max-width: 750px;
}

/* About Section */
.about .section-content {
  max-width: 850px;
}

.about p {
  font-size: 1.25rem;
  margin-bottom: 24px;
  color: var(--text-muted);
  font-weight: 300;
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.service-card {
  background: rgba(255, 255, 255, 0.02);
  padding: 48px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  transition: border-color 0.4s, background 0.4s, transform 0.4s;
}

.service-card:hover {
  border-color: rgba(0, 210, 255, 0.3);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-5px);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 28px;
  display: block;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 16px;
  line-height: 1.3;
  font-weight: 600;
}

.service-card p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.5;
}

/* Leadership Section */
.leadership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.leadership-item {
  display: flex;
  flex-direction: column;
}

.leadership-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.leadership-item h3 {
  font-size: 1.4rem;
  margin-bottom: 12px;
  font-weight: 600;
}

.leadership-item p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Expertise Section */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.expertise-card {
  background: rgba(255, 255, 255, 0.03);
  padding: 40px;
  border-radius: 20px;
  border-left: 4px solid var(--primary-color);
}

.expertise-card h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  color: var(--text-main);
}

.expertise-card ul {
  list-style: none;
}

.expertise-card li {
  color: var(--text-muted);
  margin-bottom: 12px;
  position: relative;
  padding-left: 20px;
}

.expertise-card li::before {
  content: "•";
  color: var(--primary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* Contact Section */
.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 48px;
}

.contact-item strong {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary-color);
  margin-bottom: 12px;
}

.contact-item p {
  font-size: 1.15rem;
  font-weight: 400;
}

.contact-item a {
  color: var(--text-main);
}

.contact-item a:hover {
  color: var(--primary-color);
}

/* Footer */
.footer {
  padding: 60px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 992px) {
  .hero {
    padding-top: 140px;
  }
}

@media (max-width: 768px) {
  .logo-img {
    height: 80px;
  }

  .nav-links {
    display: none;
  }

  .section {
    padding: 80px 0;
  }

  .hero {
    min-height: auto;
    padding: 160px 0 100px;
  }

  .service-card {
    padding: 32px;
  }
}