:root {
  --primary: #1e90ff;
  --primary-dark: #0066cc;
  --light-bg: #f0f8ff;
  --text: #333;
  --white: #fff;
  --shadow: 0 4px 12px rgba(0,0,0,0.1);
}

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

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--light-bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
}

.logo span {
  color: #ffcc00;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  transition: opacity 0.3s;
}

.nav-links a:hover {
  opacity: 0.8;
}

/* Hero */
.hero {
  display: flex;
  align-items: center;
  gap: 3rem;
  padding: 4rem 0;
}

.profile-img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--primary);
  box-shadow: var(--shadow);
}

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-dark);
}

.hero-content p {
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  text-decoration: none;
  transition: transform 0.3s, background 0.3s;
}

.social-icons a:hover {
  transform: translateY(-3px);
  background: var(--primary-dark);
}

/* Sections */
section {
  padding: 3rem 0;
}

#keahlian {
  background-color: #e6f2ff;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 2.5rem;
  color: var(--primary-dark);
}

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

.card {
  background: var(--white);
  padding: 1.8rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  color: var(--primary);
  margin-bottom: 0.8rem;
}

.card p {
  color: #555;
}

/* Skills */
.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.skill {
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
  }

  .hero-content h1 {
    font-size: 2rem;
  }
}