@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&display=swap");

:root {
  --primary-color: #2563eb;
  --secondary-color: #1e293b;
  --accent-color: #3b82f6;
  --bg-color: #f8fafc;
  --text-color: #334155;
  --white: #ffffff;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: "Inter", sans-serif;
  line-height: 1.7;
  color: var(--text-color);
  background-color: var(--bg-color);
}

/* HEADER */
header {
  background: linear-gradient(
    135deg,
    var(--secondary-color),
    var(--primary-color)
  );
  color: var(--white);
  padding: 4rem 2rem;
  text-align: center;
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

header p {
  font-weight: 300;
  opacity: 0.9;
}

/* 3. NAVIGASI */
nav {
  background-color: var(--white);
  padding: 1rem;
  display: flex;
  justify-content: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav a {
  color: var(--secondary-color);
  text-decoration: none;
  margin: 0 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--primary-color);
}

/* 4. LAYOUT UTAMA (FLEXBOX) */
main {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 3rem auto;
  padding: 0 1.5rem;
  gap: 2rem;
}

/* 5. ARTIKEL & KONTEN */
article {
  flex: 2.5;
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

article h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--secondary-color);
  border-left: 5px solid var(--primary-color);
  padding-left: 1rem;
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.project-card {
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1.5rem;
  transition: transform 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

/* 6. ASIDE (SIDEBAR) */
aside {
  flex: 1;
  background: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-align: center;
  align-self: flex-start;
}

aside img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid #f1f5f9;
  margin-bottom: 1.5rem;
}

aside h3 {
  margin-bottom: 0.5rem;
  color: var(--secondary-color);
}

.info-list {
  text-align: left;
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.info-item {
  margin-bottom: 0.8rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #f1f5f9;
}

/* 7. FOOTER */
footer {
  background-color: var(--secondary-color);
  color: var(--white);
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
}

/* 8. MEDIA QUERIES (RESPONSIVE) */
@media (max-width: 850px) {
  main {
    flex-direction: column-reverse;
  }

  article,
  aside {
    flex: 100%;
  }

  nav {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
}