/* navigation: gaya aktif sesuai tanggung jawab modul. */
.skip-link { position: fixed; top: 8px; left: 16px; z-index: 200; padding: 12px 20px; background: var(--ink); color: var(--paper); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.site-header { height: var(--header); padding-inline: 56px; position: sticky; top: 0; z-index: 100; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); background: var(--paper); }
.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-logo { width: 41px; height: 41px; object-fit: contain; }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: -.045em; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 16px; }
.main-nav a, .nav-dropdown-toggle { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; border: 0; padding: 8px 10px; background: transparent; font-size: 13px; font-weight: 500; }
.main-nav > a[aria-current] { position: relative; }
.main-nav > a[aria-current]::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: 3px; height: 2px; background: var(--purple); }
.main-nav a:hover, .nav-dropdown-toggle:hover { color: var(--purple); }
.main-nav .nav-contact { margin-left: 12px; padding-inline: 20px; border: 1px solid var(--ink); }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle .icon { width: 13px; height: 13px; transition: transform .2s; }
.nav-dropdown.is-open .nav-dropdown-toggle .icon { transform: rotate(180deg); }
.nav-dropdown-menu { display: none; position: absolute; top: calc(100% + 8px); left: 0; min-width: 220px; padding: 12px; background: var(--paper); border: 1px solid var(--line); box-shadow: 0 12px 24px #211c1a0d; }
.nav-dropdown.is-open .nav-dropdown-menu { display: grid; }
.nav-dropdown-menu a { justify-content: flex-start; }
.nav-toggle, .nav-backdrop { display: none; }

@media (min-width: 1600px) {
.site-header { padding-inline: max(56px, calc((100vw - var(--page-width)) / 2)); }
}
@media (max-width: 1100px) {
.site-header { padding-inline: 32px; }
.main-nav { gap: 4px; }
.main-nav .nav-contact { margin-left: 3px; padding-inline: 13px; }
}
@media (max-width: 760px) {
.site-header { height: calc(var(--header) + env(safe-area-inset-top, 0px)); padding: env(safe-area-inset-top, 0px) 20px 0; }
.brand-name { font-size: 16px; }
.brand-logo { width: 32px; height: 32px; }
.nav-toggle { position: relative; z-index: 103; display: flex; width: 44px; height: 44px; padding: 11px 8px; flex-direction: column; justify-content: center; gap: 6px; border: 0; background: transparent; }
.nav-toggle span { display: block; width: 26px; height: 1.5px; background: var(--ink); transition: transform .2s; }
.nav-toggle span:nth-child(3) { display: none; }
.nav-open .nav-toggle span:first-child { transform: translateY(3.75px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }
.main-nav { display: none; position: fixed; left: 0; right: 0; top: calc(var(--header) + env(safe-area-inset-top, 0px)); max-height: calc(100dvh - var(--header) - env(safe-area-inset-top, 0px)); overflow-y: auto; z-index: 102; padding: 22px 24px calc(28px + env(safe-area-inset-bottom, 0px)); background: var(--paper); border-bottom: 1px solid var(--line); }
.nav-open .main-nav { display: flex; flex-direction: column; align-items: stretch; gap: 2px; }
.main-nav > a, .nav-dropdown-toggle { justify-content: space-between; width: 100%; min-height: 48px; font-size: 17px; padding-inline: 0; }
.main-nav > a[aria-current]::after { display: none; }
.main-nav > a[aria-current] { color: var(--purple); }
.main-nav .nav-contact { margin: 14px 0 0; padding-inline: 15px; background: var(--gold); border-color: var(--gold); }
.nav-dropdown-menu { position: static; border: 0; box-shadow: none; padding: 0 0 10px 16px; background: transparent; }
.nav-dropdown-menu a { min-height: 44px; padding-inline: 0; font-size: 14px; }
.nav-open .nav-backdrop { display: block; position: fixed; inset: calc(var(--header) + env(safe-area-inset-top, 0px)) 0 0; width: 100%; height: 100dvh; z-index: 101; background: #211c1a66; border: 0; }
}
@media (max-width: 359px) {
.site-header { padding-inline: 16px; }
}
@media print {
.site-header, .contact-action, .footer-links { display: none; }
}
@media screen and (min-width: 761px) {
.brand-logo { width: 34px; height: 34px; }
}

/* Animasi buka dan tutup menu tanpa mengubah tinggi topbar. */
.nav-dropdown-menu { display: grid; visibility: hidden; opacity: 0; transform: translateY(-6px); pointer-events: none; transition: opacity 200ms ease, transform 240ms cubic-bezier(.22,.61,.36,1), visibility 0s 240ms; }
.nav-dropdown.is-open .nav-dropdown-menu { visibility: visible; opacity: 1; transform: none; pointer-events: auto; transition-delay: 0s; }
@media (max-width: 760px) {
  .main-nav { display: flex; flex-direction: column; align-items: stretch; gap: 2px; visibility: hidden; opacity: 0; transform: translateY(-12px); pointer-events: none; transition: transform 260ms cubic-bezier(.22,.61,.36,1), opacity 180ms ease, visibility 0s 260ms; }
  .nav-open .main-nav { visibility: visible; opacity: 1; transform: none; pointer-events: auto; transition-delay: 0s; }
  .nav-backdrop { display: block; position: fixed; inset: calc(var(--header) + env(safe-area-inset-top, 0px)) 0 0; width: 100%; height: 100dvh; z-index: 101; background: #211c1a66; border: 0; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 240ms ease, visibility 0s 240ms; }
  .nav-open .nav-backdrop { opacity: 1; visibility: visible; pointer-events: auto; transition-delay: 0s; }
  .nav-dropdown-menu { max-height: 0; padding-block: 0; overflow: hidden; transition: max-height 260ms cubic-bezier(.22,.61,.36,1), padding 260ms ease, opacity 180ms ease, visibility 0s 260ms; }
  .nav-dropdown.is-open .nav-dropdown-menu { max-height: 240px; padding-bottom: 10px; }
}