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

body {
  font-family: "Poppins", sans-serif;
  background: linear-gradient(135deg, #000000, #0a1a3d); /* fix: bukan background-color */
  color: #e2e8f0; /* fix: lowercase dan typo hilang */
  line-height: 1.6;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  min-height: 100vh;
}

header {
  background: #1e293b;
  padding: 15px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav h1 {
  font-size: 1.5rem;
  color: #38bdf8;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav a {
  color: #e2e8f0;
  text-decoration: none;
  transition: 0.2s;
}

nav a:hover {
  color: #38bdf8;
}

#hero {
  background: linear-gradient(135deg, #38bdf8, black);
  color: white;
  text-align: center;
  padding: 100px 20px;
  animation: fadeIn 1.5s ease-in;
}

#hero h2 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.btn {
  display: inline-block;
  background: white;
  color: #0f172a;
  padding: 10px 20px;
  border-radius: 8px;
  margin-top: 20px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s;
}

.btn:hover {
  background: #e2e8f0;
}

section {
  padding: 60px 20px;
  max-width: 900px;
  margin: auto;
}

h2 {
  text-align: center;
  color: #38bdf8;
  margin-bottom: 30px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.card {
  background: #1e293b;
  border-radius: 12px;
  padding: 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease; /* fix typo transfrom */
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 1s forwards; /* fix: tambahin semicolon */
  overflow: hidden;
  position: relative;
  z-index: 1;
  margin: 20px;
}

.card:hover {
  transform: translateY(-10px) scale(1.03);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  background: #334155;
  z-index: 5;
}

#hero, section, .container {
  position: relative;
  z-index: 1;
}

footer {
  background: #1e293b;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  color: #94a3b8;
  position: relative;
  z-index: 10;
  height:100px;
}

@keyframes fadeIn {
  from { opacity: 0; } /* fix: 0 bukan o */
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 1.2s ease forwards;
}

.slide-up {
  animation: slideUp 1.2s ease forwards;
}

.fade-down { /* fix: sebelumnya "fade-dowm" typo */
  animation: fadeIn 1.2s ease-out, slideUp 1.2s ease-out;
}

.hover-up {
  transition: all 0.3s ease;
}

.container {
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

@media (max-width: 600px) {
  .container {
    padding-top: 100px;
  }
}