/* ==========================
   THEME SYSTEM (2 MODE)
========================== */

/* Default = DARK MODE */
:root {
  --bg: #020618;
  --text: #ffffff;
  --muted: #94a3b8;
  --icon-color: #ffffff;

  --hero-gradient: linear-gradient(#020618 0%, #0f1839 50%, #270241 100%);
  --card-bg: linear-gradient(135deg, rgba(29, 41, 61, 0.4) 0%, rgba(15, 23, 43, 0.4) 100%);

  --border-soft: rgba(255, 255, 255, 0.1);
  --nav-border: #374151;

  --nav-bg: linear-gradient(90deg, rgba(0, 184, 219, 0.1) 0%, rgba(43, 127, 255, 0.1) 100%);
  --nav-active-bg: #00819b75;

  --glow-blue: rgba(43, 127, 255, 0.2);
  --glow-cyan: rgba(0, 184, 219, 0.2);

  --hr-middle: rgba(208, 222, 255, 0.8);
  --newsleter-bg: linear-gradient(135deg, rgba(29, 41, 61, 0.50) 0%, rgba(15, 23, 43, 0.53) 100%);
  --box-shadow: rgb(226, 226, 255) 2px, rgba(0, 0, 0, 0.06) 0px 0px 0px 1px;;
}

/* LIGHT MODE */
body.light-mode {
  --bg: #f8fafc;
  --text: #0f172a;
  --text-title: #fff;
  --muted: #475569;
  --icon-color: #000000;

  --hero-gradient: linear-gradient(135deg, #193CB8 0%, #193CB8 50%, #59168B 100%);
  --card-bg: linear-gradient(135deg, rgba(232, 232, 232, 0.4) 0%, rgba(212, 224, 255, 0.4) 100%);

  --border-soft: rgba(15, 23, 42, 0.15);
  --nav-border: rgba(15, 23, 42, 0.15);

  --nav-bg: linear-gradient(90deg, rgba(0, 184, 219, 0.08) 0%, rgba(43, 127, 255, 0.08) 100%);
  --nav-active-bg: rgba(0, 129, 155, 0.18);

  --glow-blue: rgba(43, 127, 255, 0.18);
  --glow-cyan: rgba(0, 184, 219, 0.18);

  --hr-middle: rgba(20, 40, 90, 0.35);
    --newsleter-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.236) 0%, rgba(216, 227, 255, 0.53) 100%);
    --box-shadow: rgb(201, 201, 201) 0px 10px 14px 0px, rgba(171, 171, 171, 0.06) 0px 0px 0px 1px;;
}

body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.navbar {
  /* Opsional */
  z-index: 999;
  padding: 10px;
  width: auto; /* biar mengikuti konten */ /* optional, biar nggak terlalu lebar */
  margin: 10px auto; 
  height: 60px;
}

.navbar-brand, .navbar-nav {
  font-weight: 700;
  font-size: 14px;
  padding: 0 10px;
  /* Ukuran font awal */
  transition: font-size 0.3s ease-in-out;
   left: 0; 
  right: 0;
  background: rgba(131, 131, 131, 0.202);
  border-radius: 30px;
  box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(16.5px);
  -webkit-backdrop-filter: blur(16.5px);
  border: 2px solid rgba(255, 255, 255, 0.32);
}

.navbar .navbar-brand {
  font-size: 14px;
  /* Ukuran font setelah scroll */
  color: var(--text);
}

.navbar-brand:hover {
  font-size: 14px;
  /* Ukuran font setelah scroll */
  color: #333;
}


.nav-link {
  font-size: 14px;
}





.navbar-nav .nav-item .nav-link {
  position: relative;  /* penting untuk pseudo-element */
  color: var(--text);         /* warna default */
  text-decoration: none;
  font-weight: normal;
}

.nav-item .nav-link:hover {
    color: #1e80ff;
    display: inline-block;
    border-radius: 999px;
}

/* Menandai halaman yang sedang aktif dengan background oval lembut */
.nav-link.active {
  background: rgba(30, 128, 255, 0.1); /* Warna biru transparan */
  color: #1e80ff !important;
  font-weight: 600;
  border-radius: 999px;
}

.navbar-toggler {
  border: none;
}

@media (max-width: 768px) {
  .navbar {
    background: transparent;
  }
  
  .navbar:hover {
    background: rgba(215, 233, 255, 0.70);
  border-radius: 16px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(16.5px);
  -webkit-backdrop-filter: blur(16.5px);
  border: 1px solid rgba(215, 233, 255, 0.22);
  }
}

/* ==========================
   BASE
========================== */


.text-secondary {
  color: var(--muted) !important;
}

/* tombol toggle theme */
.theme-toggle {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

/* ==========================
   GRADIENT TEXT
========================== */




.span-custom {
  font-size: 90px;
  background: linear-gradient(90deg, rgba(0, 211, 242, 1) 0%, rgba(43, 127, 255, 1) 50%, rgba(152, 16, 250, 1) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.span-custom-2,
.span-custom-title {
  background: linear-gradient(180deg, rgba(0, 211, 242, 1) 0%, rgba(43, 127, 255, 1));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.span-custom-2 {
  font-size: 32px;
}



.span-custom-title {
  font-size: 24px;
  font-weight: bold;
}

/* ==========================
   BUTTON
========================== */
.btn-primary {
  display: inline-block;
  color: #fff;
  font-size: 14px;
  background: linear-gradient(#00b8db 0%, #155dfc 100%);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.btn-secondary {
  display: inline-block;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}

/* ==========================
   NAV TAB (Visi/Misi/Sejarah)
========================== */
.btn-nav {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  transition: 0.3s;
  gap: 6px;
}

.btn-nav:hover {
  color: var(--text);
  border-color: #155dfc;
}

.active-nav {
  color: var(--text);
  background: var(--nav-active-bg);
  border: 1px solid #84abff;
  box-shadow: 0 0 15px rgba(0, 113, 219, 0.3);
}


.content {
  position: relative;
  z-index: 5;
  color: var(--text);
  text-align: center;
  top: 50%;
  transform: translateY(-50%);
}


.title {
  font-size: 0.8em;
  margin: 0 0 10px 0;
}

.span-custom-title {
  font-size: 24px;
  font-weight: bold;
}

/* ==========================
   FOOTER
========================== */
.newsletter {
  background: var(--newsleter-bg);
}

.form-control {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-soft);
  color: var(--text);
}

hr {
  border: none;
  height: 1px;
  width: 100%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    var(--hr-middle) 50%,
    rgba(255, 255, 255, 0) 100%
  );
}

.lapisan {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(circle at 20% 100%, rgba(43, 127, 255, 0.2) 10%, transparent 20%);
  filter: blur(20px);
}

footer p, footer li, footer a {
  font-size: 14px;
}

/* ==========================
   ANIMATION (1x saja)
========================== */
@keyframes glowPulse {
  0% {
    opacity: 0.6;
    transform: scale(1);
  }
  100% {
    opacity: 1;
    transform: scale(1.08);
  }
}