/* ========== Reset & Base ========== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Open Sans', sans-serif;
  color: #333;
  overflow-x: hidden;
  background: #fff;
}

/* ========== Navigation ========== */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 71, 161, 0.95);
  backdrop-filter: blur(8px);
  transition: background 0.3s;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
}

.nav-links a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.85);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #4fc3f7;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(135deg, #0d47a1 0%, #1565c0 40%, #1976d2 70%, #1e88e5 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 50%;
  left: 30%;
  transform: translate(-50%, -50%);
  width: 700px;
  height: 700px;
  pointer-events: none;
}

.hero-circle {
  width: 100%;
  height: 100%;
  animation: rotateCircle 60s linear infinite;
}

@keyframes rotateCircle {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-content {
  position: relative;
  text-align: center;
  z-index: 2;
  padding: 0 20px;
}

.hero-title {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 3.2rem;
  color: #fff;
  letter-spacing: 6px;
  margin-bottom: 16px;
}

.hero-tagline {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 400;
  font-size: 1.2rem;
  color: #69f0ae;
  letter-spacing: 4px;
}

/* ========== Section Heading ========== */
.section-heading {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600;
  font-size: 2rem;
  color: #69f0ae;
  letter-spacing: 6px;
  text-align: center;
  margin-bottom: 60px;
}

/* ========== About Section ========== */
.about {
  padding: 100px 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.about-card h3 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: #0d47a1;
  letter-spacing: 3px;
  margin-bottom: 20px;
  text-align: center;
}

.about-card p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #555;
  text-align: center;
}

/* ========== Services Section ========== */
.services {
  padding: 100px 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 50px 40px;
}

.service-card {
  text-align: center;
  padding: 20px;
}

.service-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: #0d47a1;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.service-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: #555;
}

/* ========== Closing Tagline ========== */
.closing-tagline {
  background: linear-gradient(135deg, #0d47a1 0%, #1565c0 50%, #1976d2 100%);
  padding: 80px 32px;
  text-align: center;
}

.closing-tagline h1 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 400;
  font-size: 1.6rem;
  color: #69f0ae;
  letter-spacing: 6px;
}

/* ========== Contact Section ========== */
.contact {
  background: linear-gradient(135deg, #0d47a1 0%, #1565c0 50%, #1976d2 100%);
  padding: 0 32px 80px;
  text-align: center;
}

.contact h2 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  color: #fff;
  letter-spacing: 4px;
  margin-bottom: 30px;
}

.contact-icons {
  display: flex;
  justify-content: center;
  gap: 28px;
}

.contact-icons a {
  color: #4fc3f7;
  transition: color 0.3s, transform 0.3s;
}

.contact-icons a:hover {
  color: #69f0ae;
  transform: translateY(-3px);
}

.contact-icons svg {
  width: 28px;
  height: 28px;
}

.contact-email {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.1rem;
  color: #4fc3f7;
  letter-spacing: 1px;
  margin-top: 14px;
}

/* ========== Footer ========== */
footer {
  background: #0a3780;
  padding: 24px 32px;
  text-align: center;
}

.scroll-top {
  color: #4fc3f7;
  transition: color 0.3s;
}

.scroll-top:hover {
  color: #69f0ae;
}

.scroll-top svg {
  width: 28px;
  height: 28px;
}

/* ========== Animations ========== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(13, 71, 161, 0.98);
    flex-direction: column;
    padding: 20px 0;
    gap: 0;
    text-align: center;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li {
    padding: 12px 0;
  }

  .hamburger {
    display: flex;
  }

  .hero-title {
    font-size: 2rem;
    letter-spacing: 3px;
  }

  .hero-tagline {
    font-size: 1rem;
    letter-spacing: 2px;
  }

  .hero-bg {
    width: 400px;
    height: 400px;
    left: 20%;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section-heading {
    font-size: 1.5rem;
    letter-spacing: 3px;
  }

  .closing-tagline h1 {
    font-size: 1.1rem;
    letter-spacing: 3px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }

  .nav-container {
    padding: 12px 20px;
  }
}