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

body {
  font-family: 'Poppins', sans-serif;
  background: #f9fafc;
  color: #333;
  line-height: 1.6;
}

/* Container */
.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* Header */
.header {
  background: #0f172a;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  color: #38bdf8;
  font-weight: 700;
  font-size: 1.5rem;
}

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

.nav-links a {
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #38bdf8;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: white;
  padding: 6rem 0;
  text-align: center;
}

.hero-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero-content span {
  color: #facc15;
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* Button */
.btn-primary {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: white;
  color: #2563eb;
  font-weight: 600;
  text-decoration: none;
  border-radius: 50px;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background: #0f172a;
  color: white;
}

/* Sections */
.section {
  padding: 5rem 0;
  text-align: center;
}

.bg-light {
  background: #f1f5f9;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: #0f172a;
}

.section-text {
  max-width: 700px;
  margin: auto;
  color: #555;
}

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

.card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.card h3 {
  margin-bottom: 1rem;
  color: #2563eb;
}

/* Footer */
.footer {
  background: #0f172a;
  color: white;
  text-align: center;
  padding: 1.5rem 0;
  margin-top: 3rem;
}