:root {
  --samsung-blue: #034EA2;
  --dark-blue: #012e6b;
  --light-gray: #f4f4f4;
  --accent-blue: #0066cc;
}

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

html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--light-gray);
  color: #111;
  line-height: 1.6;
}

/* Navigation Bar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--samsung-blue);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar .logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-img {
    height: 60px;
    width: auto;
}

    .navbar .menu {
      display: flex;
      gap: 2rem;
    }

        .navbar .menu a {
          color: white;
          text-decoration: none;
          font-weight: 500;
          font-size: 1rem;
          transition: all 0.3s ease;
          padding: 0.5rem 1rem;
          border-radius: 5px;
        }

            .navbar .menu a:hover {
              background-color: rgba(255,255,255,0.1);
              color: #cce4ff;
            }
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
/* Hero Section */
header {
  background: linear-gradient(135deg, var(--samsung-blue) 0%, var(--dark-blue) 100%);
  color: white;
  padding: 5rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('index_bg.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.15;
  z-index: 1;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-image {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.2;
  z-index: 1;
}

.hero-image img {
  width: 400px;
  height: auto;
}

header h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  letter-spacing: -1px;
}

header .tagline {
  font-size: 1.4rem;
  color: #e0e0e0;
  margin-bottom: 2rem;
  font-weight: 300;
}

.cta-button {
    display: inline-block;
    background-color: white;
    color: var(--samsung-blue);
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 1rem;
    pointer-events: auto;
    opacity: 1;
    position: relative;
    z-index: 10;
}

.cta-button:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: auto;
}

.section h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: var(--samsung-blue);
  text-align: left;
  font-weight: 700;
}

.section p {
  font-size: 1.1rem;
  text-align: left;
  max-width: 800px;
  margin: 0 auto 2rem;
  color: #555;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
  padding: 2.5rem;
  transition: all 0.3s ease;
  border: 1px solid #e0e0e0;
  animation: fadeInUp 0.6s ease forwards;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.card-icon {
  width: 50px;
  height: 50px;
  background: var(--samsung-blue);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.card-icon::before {
  content: "⚡";
  color: white;
  font-size: 1.5rem;
}

.card:nth-child(1) .card-icon::before { content: "💻"; }
.card:nth-child(2) .card-icon::before { content: "☁️"; }
.card:nth-child(3) .card-icon::before { content: "🤖"; }
.card:nth-child(4) .card-icon::before { content: "⚙️"; }

.card h3 {
  margin-bottom: 1rem;
  color: var(--dark-blue);
  font-size: 1.3rem;
  font-weight: 600;
}

.card p {
  color: #666;
  text-align: left;
  margin: 0;
  font-size: 1rem;
}

.card i {
    transition: transform 0.3s ease;
}

.card:hover i {
    transform: scale(1.2);
}

/* Contact Section */
#contact {
  background: white;
  border-radius: 20px;
  margin: 2rem auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.contact-item {
  text-align: center;
  padding: 1rem;
}

.contact-item a {
  color: var(--samsung-blue);
  text-decoration: none;
  font-weight: 500;
}

.contact-item a:hover {
  text-decoration: underline;
}

footer {
  background: var(--samsung-blue);
  color: #e0e0e0;
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
  }

  .navbar .menu {
    gap: 1rem;
    align-self: flex-start;
  }

  header h1 {
    font-size: 2.5rem;
  }

  header .tagline {
    font-size: 1.2rem;
  }



  .section {
    padding: 2rem 1rem;
  }

  .section h2 {
    font-size: 2rem;
  }
}

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