/* --- Variabel Global & Reset --- */
:root {
  --primary-bg: #0a0a1a;
  --secondary-bg: #1a1a2a;
  --glass-bg: rgba(26, 26, 42, 0.6); /* Latar belakang kaca */
  --accent-color: #00ffff; /* Cyan neon */
  --text-light: #e0e0e0;
  --text-dark: #a0a0b0;
  --border-color: rgba(0, 255, 255, 0.2);
  --shadow-color: rgba(0, 255, 255, 0.1);
}

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

body {
  font-family: "Poppins", sans-serif;
  background-color: var(--primary-bg);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* --- Latar Belakang Binary --- */
.binary-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}
.binary-column {
  position: absolute;
  top: -100%;
  font-family: "Courier New", monospace;
  color: var(--accent-color);
  writing-mode: vertical-rl;
  text-shadow: 0 0 5px var(--shadow-color);
  user-select: none;
  animation: fall linear infinite;
}
@keyframes fall {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(200vh);
  }
}

/* --- Header --- */
header {
  padding: 20px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.logo-container {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.logo-container img {
  height: 40px;
  margin-right: 10px;
}

/* --- Main Content Cards --- */
.card-section {
  padding: 60px 40px;
  text-align: center;
}

.card-section h2 {
  /* --- Perubahan Baru --- */
  font-family: "Oswald", sans-serif; /* Font baru yang "tegas" */
  font-weight: 700; /* Bold */
  text-transform: uppercase; /* Profesional & Disiplin */
  letter-spacing: 1.5px; /* Jarak antar huruf agar rapi */
  color: #ffffff; /* Warna putih bersih (Excellent) */
  text-shadow: 0 0 12px var(--shadow-color), 0 0 25px rgba(0, 255, 255, 0.4); /* Glow (Semangat) */

  /* --- Properti Lama (Dibiarkan) --- */
  font-size: 2.5em;
  min-height: 1.2em;
  margin-bottom: 50px;
  display: inline-block;
  border-right: 3px solid var(--accent-color);
  white-space: nowrap;
  overflow: hidden;
  animation: blink-caret 0.75s step-end infinite;
}
@keyframes blink-caret {
  from,
  to {
    border-color: transparent;
  }
  50% {
    border-color: var(--accent-color);
  }
}

/* Container Kartu (Tampilan Desktop - Grid) */
.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 15px;
  max-width: 1400px;
  margin: 0 auto;
}

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
  height: 100%;
}

.card {
  background: var(--glass-bg);
  border-radius: 15px;
  padding: 15px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  text-align: left;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  will-change: transform, box-shadow;
}
.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 35px var(--shadow-color);
  border-color: var(--accent-color);
}

.card-header {
  display: flex;
  align-items: center;
}

.card .icon {
  font-size: 2em;
  color: var(--accent-color);
  text-shadow: 0 0 10px var(--shadow-color);
  margin-bottom: 0;
  margin-right: 12px;
  flex-shrink: 0;
}

.card h3 {
  font-size: 1.15em;
  color: var(--text-light);
  margin-bottom: 0;
}

/* =========================================== */
/* --- (PERUBAHAN DI SINI) --- */
/* =========================================== */
.card p {
  color: var(--text-dark);
  font-size: 0.9em;
  margin-top: 12px;

  /* --- Tambahan Baru --- */
  background-color: var(--primary-bg); /* Latar belakang lebih gelap */
  padding: 10px;
  border-radius: 8px; /* Radius lebih kecil dari kartu */
  border: 1px solid rgba(0, 255, 255, 0.1); /* Border yg lebih redup */
}
/* =========================================== */
/* --- AKHIR PERUBAHAN --- */
/* =========================================== */

/* --- Media Query Smartphone --- */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    padding: 15px 20px;
    text-align: center;
  }
  .logo-container {
    margin-bottom: 0;
  }
  nav {
    display: none;
  }

  .card-section {
    padding: 40px 20px;
  }

  .card-section h2 {
    /* --- Perubahan Baru (disamakan dgn desktop) --- */
    font-family: "Oswald", sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px; /* Sedikit lebih rapat di mobile */
    color: #ffffff;
    text-shadow: 0 0 12px var(--shadow-color); /* Glow lebih simpel */

    /* --- Properti Lama (Dibiarkan) --- */
    font-size: 1.8em;
    margin-bottom: 30px;
    white-space: normal;
    animation: none;
    border-right: none;
    width: 100%;
    min-height: 0;
  }

  .card-container {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .card h3 {
    font-size: 1.1em;
  }

  .card p {
    font-size: 0.95em; /* Sedikit lebih besar di mobile agar mudah dibaca */
  }
}