@import url("https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600&family=Syne:wght@600;800&display=swap");

/* Variabel warna, ukuran judul, dan warna dasar Bootstrap. */
:root {
  --bg: #101216;
  --surface: #171a20;
  --fg: #ecebe8;
  --mute: #8d929c;
  --soft: #b6b9c0;
  --line: #272b33;
  --accent: #b9c7e0;
  --heading-size: clamp(2.4rem, 5.2vw, 4.4rem);
  --bs-body-bg: var(--bg);
  --bs-body-color: var(--fg);
}

/* Gaya dasar halaman, tautan, fokus keyboard, dan judul. */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font: 400 1.0625rem/1.65 "Instrument Sans", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1; }
a { color: inherit; text-decoration: none; }
a:focus-visible, .nav-check:focus-visible + .nav-burger {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 4px;
}
h1, h2, h3 {
  font-family: "Syne", system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
h1 {
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.98;
}
.container { max-width: 1180px; }

/* Identitas situs dan tampilan navigasi desktop maupun mobile. */
.brand { font: 800 1.5rem/1 "Syne", system-ui, sans-serif; letter-spacing: -0.03em; }
.nav-check { position: absolute; opacity: 0; pointer-events: none; }
.nav-burger {
  cursor: pointer; color: var(--mute); border: 1px solid var(--line);
  border-radius: 50rem; padding: 0.3rem 1rem; font-size: 0.9rem;
}
.nav-links { display: flex; gap: 2.25rem; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--mute); font-size: 0.95rem; font-weight: 500;
  padding-bottom: 0.25rem; border-bottom: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); border-color: var(--fg); }
@media (max-width: 991.98px) {
  .nav-links { display: none; width: 100%; flex-direction: column; gap: 1rem; padding: 1.75rem 0 0.5rem; }
  .nav-check:checked ~ .nav-links { display: flex; }
}
@media (min-width: 992px) { .nav-burger { display: none; } }

/* Tata letak dan komponen bagian perkenalan di halaman utama. */
.hero { padding: 3rem 0 2rem; margin-top: 0; }
.hero h1 { font-size: var(--heading-size); margin: 0 0 1.5rem; animation: rise 1s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
.sub { font: 600 clamp(1.1rem, 2vw, 1.4rem)/1.3 "Syne", system-ui, sans-serif; letter-spacing: -0.02em; color: var(--accent); margin-bottom: 1.5rem; }
.lead-text { color: var(--soft); max-width: 52ch; }
.avatar { width: min(100%, 380px); aspect-ratio: 1; object-fit: cover; border-radius: 50%; background: var(--surface); border: 1px solid var(--line); }
.btn-main, .btn-ghost {
  display: inline-block; border-radius: 50rem; padding: 0.75rem 1.75rem;
  font-weight: 600; transition: background 0.25s, color 0.25s, border-color 0.25s;
}
.btn-main { background: var(--fg); color: var(--bg); border: 1px solid var(--fg); }
.btn-main:hover { background: transparent; color: var(--fg); }
.btn-ghost { border: 1px solid var(--line); color: var(--fg); }
.btn-ghost:hover { border-color: var(--fg); }

/* Gaya judul halaman, bagian, item informasi, dan tautan kontak. */
.page-title { font-size: var(--heading-size); margin: 2.5rem 0 4rem; }
.sec { margin-top: 6rem; }
.side-title, .sec h2 { font-size: 1.8rem; }
.sec h2 { margin-bottom: 1.75rem; }
.item { border-top: 1px solid var(--line); padding: 2rem 0; margin: 0; }
.sec .item:last-child, .item.last { border-bottom: 1px solid var(--line); }
.label { color: var(--mute); font-size: 0.95rem; }
.item h3 { font-size: 1.4rem; margin: 0 0 0.5rem; }
.item p { margin: 0; color: var(--soft); max-width: 60ch; }
.item-link { transition: color 0.25s; }
.item-link:hover { color: var(--accent); }
.big { font: 600 clamp(1.15rem, 2.6vw, 1.9rem)/1.25 "Syne", system-ui, sans-serif; letter-spacing: -0.02em; overflow-wrap: anywhere; }

/* Tampilan garis waktu untuk menyusun riwayat secara kronologis. */
.tl { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.tl li { position: relative; padding: 0 0 2.25rem 1.75rem; }
.tl li:last-child { padding-bottom: 0; }
.tl li::before { content: ""; position: absolute; left: -4px; top: 0.65rem; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.tl small { display: block; color: var(--mute); font-size: 0.95rem; }
.tl h3 { font-size: 1.4rem; margin: 0; }
.tl p { margin: 0.25rem 0 0; color: var(--soft); }
.foot { border-top: 1px solid var(--line); color: var(--mute); font-size: 0.9rem; margin-top: 7rem; padding: 2rem 12px; }

/* Animasi judul dan penghormatan terhadap preferensi gerakan pengguna. */
@keyframes rise { from { opacity: 0; transform: translateY(24px); } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

/* Jarak untuk ikon Font Awesome */
i.fa-solid, i.fa-regular, i.fa-brands { margin-right: 8px; }
.nav-links i { margin-right: 6px; }

/* Navigasi tetap di atas saat menggulir halaman */
header.container {
  position: sticky;
  top: 0;
  z-index: 1030;
  background-color: var(--bg);
  border-bottom: 1px solid var(--line);
}