/*
 * Layar kunci akses. Menutupi seluruh layar sampai kode dimasukkan; isi aplikasi di
 * belakangnya disembunyikan lewat kelas `terkunci` pada elemen html agar tidak
 * sempat terbaca sekilas saat pemuatan.
 */

html.terkunci { overflow: hidden; }
html.terkunci body > *:not(.gerbang) { visibility: hidden; }

.gerbang {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
  padding: 20px;
  /* Key-art kantor pusat di balik selubung teal, sama dengan panel merek layar masuk. */
  background:
    linear-gradient(160deg, rgba(6, 40, 44, .93) 0%, rgba(10, 83, 89, .78) 50%, rgba(6, 30, 34, .82) 100%),
    url('../assets/2d/latar/latar-kantor-pusat.webp') center 40% / cover no-repeat,
    #0a3a3f;
  overflow: auto;
}

.gerbang-kotak {
  display: grid;
  gap: 10px;
  width: 100%;
  max-width: 400px;
  padding: 30px 28px 24px;
  border-radius: 22px;
  background: #fffefb;
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .08);
  text-align: left;
  animation: gerbang-masuk .55s cubic-bezier(.2, .8, .2, 1);
}
@keyframes gerbang-masuk { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.gerbang-eyebrow { margin: 4px 0 0; font-size: 10.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: #86827a; text-align: center; }

.gerbang-merek { display: flex; justify-content: center; margin-bottom: 2px; }
.gerbang-judul { font-size: 23px; font-weight: 600; letter-spacing: -.022em; margin: 0; text-align: center; }
.gerbang-teks { margin: 0 0 6px; font-size: 12.5px; line-height: 1.55; color: #55524c; text-align: center; }

.gerbang-label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #7f7b74;
}

.gerbang-isian {
  width: 100%;
  min-height: 48px;
  padding: 11px 14px;
  border: 1px solid #d5ccbc;
  border-radius: 12px;
  background: #fff;
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .22em;
  text-align: center;
  text-transform: uppercase;
  color: #1b1e21;
}
.gerbang-isian:focus { outline: 2px solid #0f6e75; outline-offset: 1px; border-color: #0f6e75; }

.gerbang-tombol {
  width: 100%;
  min-height: 48px;
  margin-top: 2px;
  border: 0;
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(10, 83, 89, .24);
  background: #0f6e75;
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.gerbang-tombol:hover { background: #0a5359; }

.gerbang-pesan { min-height: 16px; margin: 0; font-size: 12px; line-height: 1.45; color: #a23c26; }
.gerbang-pesan:empty { min-height: 0; }
.gerbang-kaki { margin: 4px 0 0; font-size: 10.5px; color: #7f7b74; text-align: center; }

@keyframes gerbang-goyang {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
}
.gerbang-goyang { animation: gerbang-goyang .38s ease-out; }

@media (prefers-reduced-motion: reduce) {
  .gerbang-goyang, .gerbang-kotak { animation: none; }
}