/* ==========================================================================
   UCB Shared Identity System
   Dipakai bersama oleh landing, opac, repository, dan ejournal
   supaya keempat situs terasa satu keluarga visual.
   ========================================================================== */

/* Palet resmi Universitas Citra Bangsa — merah terang, hitam, putih.
   Merah terang (#F4282D) diambil dari ucb.ac.id/assets/css/style.css
   (dipakai sebagai --primary-color/--rt-primary pada varian body.index-sc mereka). */
:root {
  --ucb-primary: #F4282D;
  --ucb-primary-dark: #C81A1F;
  --ucb-primary-light: #FF5A5E;
  --ucb-accent: #110C2D;
  --ucb-accent-dark: #000000;
  --ucb-ink: #181818;
}

/* --------------------------------------------------------------------------
   Motif tenun ikat Timor/NTT — strip dekoratif zigzag dwiwarna.
   Dipakai sebagai pembatas visual (di bawah navbar / di atas footer)
   sebagai penanda identitas lokal UCB (Kupang, NTT), bukan sekadar garis polos.
   -------------------------------------------------------------------------- */
.ucb-motif-strip {
  height: 14px;
  width: 100%;
  background-image:
    linear-gradient(135deg, var(--ucb-accent) 25%, transparent 25%),
    linear-gradient(225deg, var(--ucb-accent) 25%, transparent 25%),
    linear-gradient(45deg, var(--ucb-accent) 25%, transparent 25%),
    linear-gradient(315deg, var(--ucb-accent) 25%, var(--ucb-primary) 25%);
  background-position: 14px 0, 14px 0, 0 0, 0 0;
  background-size: 28px 28px;
  background-repeat: repeat-x;
  background-color: var(--ucb-primary);
}

.ucb-motif-strip--thin {
  height: 8px;
  background-size: 16px 16px;
  background-position: 8px 0, 8px 0, 0 0, 0 0;
}

/* --------------------------------------------------------------------------
   Scroll-reveal animation utility (dipakai bersama library AOS via CDN,
   ini fallback ringan kalau AOS belum sempat load / JS mati)
   -------------------------------------------------------------------------- */
.ucb-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.ucb-reveal.ucb-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Kartu interaktif (hover elevate + border accent)
   -------------------------------------------------------------------------- */
.ucb-card-hover {
  transition: transform .25s ease, box-shadow .25s ease;
}
.ucb-card-hover:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(11, 61, 145, .18);
}

/* --------------------------------------------------------------------------
   Counter angka berjalan
   -------------------------------------------------------------------------- */
.ucb-counter {
  font-weight: 800;
  font-size: 2.4rem;
  color: var(--ucb-primary);
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Tombol back-to-top
   -------------------------------------------------------------------------- */
.ucb-back-to-top {
  position: fixed;
  bottom: 24px;
  right: 96px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--ucb-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 16px rgba(0,0,0,.25);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s;
  z-index: 1049;
  border: none;
  cursor: pointer;
}
.ucb-back-to-top.ucb-show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.ucb-back-to-top:hover {
  background: var(--ucb-primary-dark);
  color: #fff;
}

/* --------------------------------------------------------------------------
   Navbar mengecil & menegas saat discroll
   -------------------------------------------------------------------------- */
.ucb-navbar-scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,.18) !important;
}

/* --------------------------------------------------------------------------
   Hero dengan overlay gradient + pola halus (dipakai landing & repository)
   -------------------------------------------------------------------------- */
.ucb-hero-pattern {
  position: relative;
  overflow: hidden;
}
.ucb-hero-pattern::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 20%, rgba(255,255,255,.08) 0, transparent 40%),
                     radial-gradient(circle at 80% 60%, rgba(245,166,35,.15) 0, transparent 45%);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Badge identitas kecil "Kupang, NTT" style pill
   -------------------------------------------------------------------------- */
.ucb-pill {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  padding: .35rem .9rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
  backdrop-filter: blur(4px);
}