* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: #0f172a;
  color: #e2e8f0;
  line-height: 1.6;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 8%;
  background: #1e293b;
  position: sticky;
  top: 0;
}

.logo { color: #38bdf8; }

.navbar nav a {
  color: #e2e8f0;
  text-decoration: none;
  margin-left: 20px;
  padding-bottom: 4px;
}

.navbar nav a:hover,
.navbar nav a.active {
  color: #38bdf8;
  border-bottom: 2px solid #38bdf8;
}

/* Hero (Home) */
.hero {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 8%;
}

.hero h1 { font-size: 3rem; color: #38bdf8; }
.hero .desc { margin: 12px 0 24px; max-width: 500px; }

.btn {
  display: inline-block;
  width: fit-content;
  background: #38bdf8;
  color: #0f172a;
  padding: 10px 24px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
}

.btn:hover { background: #7dd3fc; }

footer {
  text-align: center;
  padding: 20px;
  background: #1e293b;
}

/* Section umum */
.section {
  padding: 40px 8%;
  min-height: 80vh;
}

.title {
  color: #38bdf8;
  margin-bottom: 24px;
}

.subtitle {
  margin: 32px 0 12px;
}

/* Tag / label */
.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.tag {
  background: #1e293b;
  border: 1px solid #38bdf8;
  color: #38bdf8;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
}

/* Project */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: #1e293b;
  padding: 20px;
  border-radius: 10px;
  transition: transform 0.2s;
}

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

.card h3 { color: #38bdf8; margin-bottom: 8px; }
.card .btn { margin-top: 8px; }

/* Learning */
.learning-list {
  display: grid;
  gap: 16px;
  margin-top: 20px;
  max-width: 700px;
}

.learning-item {
  background: #1e293b;
  padding: 16px 20px;
  border-radius: 10px;
}

.learning-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.progress {
  background: #0f172a;
  border-radius: 20px;
  height: 10px;
  overflow: hidden;
  margin-bottom: 6px;
}

.progress-bar {
  background: #38bdf8;
  height: 100%;
  border-radius: 20px;
}

/* Login */
.login-box {
  max-width: 400px;
  margin: 0 auto;
  background: #1e293b;
  padding: 30px;
  border-radius: 10px;
}

.login-box label {
  display: block;
  margin: 12px 0 4px;
}

.login-box input {
  width: 100%;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #0f172a;
  color: #e2e8f0;
}

.login-box input:focus {
  outline: none;
  border-color: #38bdf8;
}

.message {
  color: #f87171;
  margin: 10px 0;
  min-height: 24px;
}

.login-box .btn {
  border: none;
  cursor: pointer;
  width: 100%;
}

/* Tombol hamburger: disembunyikan di layar besar */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #38bdf8;
  font-size: 1.8rem;
  cursor: pointer;
}

.navbar { z-index: 100; }

/* Tampilan HP / layar kecil */
@media (max-width: 700px) {
  .navbar {
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: block;
  }

  .navbar nav {
    display: none;          /* menu tersembunyi dulu */
    flex-direction: column;
    width: 100%;
    margin-top: 12px;
  }

  .navbar nav.open {
    display: flex;          /* tampil saat tombol diklik */
  }

  .navbar nav a {
    margin: 0;
    padding: 10px 0;
    border-bottom: 1px solid #334155;
  }

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

  .profile-card {
    flex-direction: column;
    text-align: center;
  }
}