*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Poppins", sans-serif;
  transition:
    background 0.3s,
    color 0.3s,
    border-color 0.3s,
    transform 0.2s,
    box-shadow 0.2s;
}

:root {
  /* Tema terang bawaan */
  --bg: #f4f6f8;
  --bg2: #ffffff;
  --bg3: #f8fafc;
  --border: #e2e8f0;
  --border2: #cbd5e1;
  --text: #0f172a;
  --muted: #64748b;

  --cyan: #07dce0;
  --cyan-hover: #05b8bb;
  --cyan-dim: rgba(7, 220, 224, 0.1);
  --green: #10b981;
  --red: #ef4444;
  --orange: #f59e0b;

  --radius: 8px;
  --radius-lg: 16px;
}

body.dark {
  --bg: #0f172a;
  --bg2: #1e293b;
  --bg3: #334155;
  --border: #334155;
  --border2: #475569;
  --text: #f8fafc;
  --muted: #94a3b8;
}

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg2);
  z-index: 10;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
body.dark header {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.logo {
  font-family: "Oswald", sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: 0.06em;
}
.logo span {
  color: var(--cyan);
}

.theme-toggle {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.theme-toggle:hover {
  background: var(--border2);
}

/* Menu Utama */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem;
  width: 100%;
  max-width: 800px; /* Ukuran lebih lebar untuk menampilkan 2 opsi berdampingan */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  animation: fadeUp 0.5s ease forwards;
}
body.dark .card {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.welcome-header {
  text-align: center;
  margin-bottom: 1.5rem;
}
.card-title {
  font-family: "Oswald", sans-serif;
  font-weight: 700;
  font-size: 2.8rem;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.card-title span {
  color: var(--cyan);
}
.card-sub {
  color: var(--muted);
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 2rem auto;
  width: 50%;
}

.section-title {
  font-family: "Oswald", sans-serif;
  font-size: 1.2rem;
  text-align: center;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

/* PORTAL CARDS (GRID) */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 2 Kolom berdampingan */
  gap: 1.5rem;
}

.portal-card {
  background: var(--bg3);
  border: 2px solid var(--border2);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.portal-card:hover {
  border-color: var(--cyan);
  background: var(--bg2);
  transform: translateY(-5px);
  box-shadow: 0 8px 25px var(--cyan-dim);
}

.portal-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.portal-title {
  font-family: "Oswald", sans-serif;
  font-weight: 600;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.portal-desc {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}

.portal-action {
  margin-top: 1.5rem;
}

.btn-text {
  font-family: "Oswald", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--cyan);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.portal-card:hover .btn-text {
  color: var(--cyan-hover);
  text-decoration: underline;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--bg2);
  margin-top: auto;
}

/* RESPONSIVE MOBILE */
@media (max-width: 650px) {
  header {
    padding: 1rem 1.5rem;
  }
  .logo {
    font-size: 1.5rem;
  }
  .card {
    padding: 2rem 1.5rem;
  }
  .card-title {
    font-size: 2.2rem;
  }

  .portal-grid {
    grid-template-columns: 1fr; /* Jadi 1 kolom bertumpuk di HP */
  }
}