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

body {
  font-family: Arial, sans-serif;
  color: #222;
  background: #fff;
  line-height: 1.6;
}

.container {
  width: 90%;
  max-width: 1150px;
  margin: auto;
}

.header {
  background: #111827;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

.logo span {
  color: #38bdf8;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  margin-left: 25px;
  font-size: 15px;
}

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

.menu-btn {
  display: none;
  font-size: 28px;
  cursor: pointer;
}

.hero {
  min-height: 90vh;
  background: linear-gradient(135deg, #111827, #1e3a8a);
  color: #fff;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 10px;
}

.hero h1 span {
  color: #38bdf8;
}

.hero h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

.hero p {
  max-width: 650px;
  font-size: 18px;
  color: #dbeafe;
}

.hero-buttons {
  margin-top: 30px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  margin-right: 10px;
  font-weight: bold;
  transition: 0.3s;
}

.primary {
  background: #38bdf8;
  color: #111827;
}

.primary:hover {
  background: #0ea5e9;
}

.secondary {
  border: 2px solid #38bdf8;
  color: #38bdf8;
}

.secondary:hover {
  background: #38bdf8;
  color: #111827;
}

.hero-card {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 18px;
  backdrop-filter: blur(8px);
}

.hero-card h3 {
  margin-bottom: 15px;
  color: #38bdf8;
}

.section {
  padding: 80px 0;
}

.light {
  background: #f8fafc;
}

.section-title {
  text-align: center;
  font-size: 34px;
  margin-bottom: 35px;
  color: #111827;
}

.about-text {
  max-width: 850px;
  margin: auto;
  text-align: center;
  font-size: 18px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.skill {
  background: #fff;
  padding: 20px;
  text-align: center;
  border-radius: 12px;
  font-weight: bold;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.project-card {
  padding: 25px;
  border-radius: 15px;
  background: #fff;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  transition: 0.3s;
}

.project-card:hover {
  transform: translateY(-8px);
}

.project-card h3 {
  color: #1e3a8a;
  margin-bottom: 12px;
}

.project-card span {
  display: block;
  margin-top: 15px;
  color: #0ea5e9;
  font-weight: bold;
}

.contact-box {
  text-align: center;
}

.contact-box p {
  margin-bottom: 25px;
  font-size: 18px;
}

.footer {
  background: #111827;
  color: #fff;
  text-align: center;
  padding: 20px;
}

@media (max-width: 768px) {
  .menu-btn {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: #111827;
    padding: 20px;
  }

  .nav-links a {
    display: block;
    margin: 15px 0;
  }

  .hero-content,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero {
    padding: 60px 0;
  }
}