/* --- RESET & FONT STYLES --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', 'Segoe UI', sans-serif;
}

body {
    background-color: #f8fafc;
    overflow-x: hidden;
}

/* --- INTRO OVERLAY CONFIGURATION --- */
#intro-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    pointer-events: none; /* Mencegah klik saat transisi */
}

/* Efek Tirai Belah Dua */
.curtain {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, #0f172a, #1e3a8a); /* Warna Biru Navy Elegan */
    transition: transform 1s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 1;
}

.left-curtain { left: 0; }
.right-curtain { right: 0; }

/* Konten di Dalam Intro */
.intro-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #ffffff;
    padding: 0 20px;
    transition: opacity 0.5s ease;
}

/* --- ANIMASI ELEMENT INTRO --- */
.logo-wrapper {
    opacity: 0;
    transform: scale(0.5);
    animation: zoomIn 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards 0.2s;
}

.intro-logo {
    width: 120px;
    height: auto;
    margin-bottom: 20px;
    filter: drop-shadow(0px 4px 10px rgba(0,0,0,0.3));
}

.intro-title {
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.intro-subtitle {
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: 4px;
    color: #38bdf8; /* Warna Biru Muda */
    margin-top: 5px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards 0.9s;
}

/* Loading Bar */
.progress-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    margin: 30px auto 0 auto;
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: #38bdf8;
    animation: fillProgress 2s linear forwards 0.2s;
}

/* --- KEYFRAMES --- */
@keyframes zoomIn {
    to { opacity: 1; transform: scale(1); }
}
@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fillProgress {
    to { width: 100%; }
}

/* --- KETIKA INTRO SELESAI (DIPICU JS) --- */
#intro-overlay.loaded .intro-content {
    opacity: 0;
}
#intro-overlay.loaded .left-curtain {
    transform: translateX(-100%);
}
#intro-overlay.loaded .right-curtain {
    transform: translateX(100%);
}

/* --- RESPONSIVE LAYOUT (HP & TABLET) --- */
@media (max-width: 768px) {
    .intro-logo { width: 90px; }
    .intro-title { font-size: 1.8rem; letter-spacing: 1px; }
    .intro-subtitle { font-size: 1rem; letter-spacing: 2px; }
    .progress-bar { width: 150px; }
}

/* --- KONTEN UTAMA WEBSITE (PREVIEW) --- */
.main-website {
    opacity: 0;
    animation: fadeInMain 1s ease forwards 3.2s;
}
@keyframes fadeInMain { to { opacity: 1; } }

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.web-logo { font-weight: 700; color: #1e3a8a; }
nav a { text-decoration: none; margin-left: 20px; color: #475569; font-weight: 500; }
.hero-section {
    text-align: center;
    padding: 100px 20px;
    max-width: 800px;
    margin: 0 auto;
}
.hero-section h2 { color: #475569; font-size: 1.5rem; font-weight: 400; }
.hero-section h1 { color: #1e3a8a; font-size: 3rem; margin: 10px 0 20px 0; }
.btn-explore {
 --h-button: 48px;
  --w-button: 102px;
  --round: 0.75rem;
  cursor: pointer;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  transition: all 0.25s ease;
  background: radial-gradient(
      65.28% 65.28% at 50% 100%,
      rgba(223, 113, 255, 0.8) 0%,
      rgba(223, 113, 255, 0) 100%
    ),
    linear-gradient(0deg, #7a5af8, #7a5af8);
  border-radius: var(--round);
  border: none;
  outline: none;
  padding: 12px 18px;
}
.button::before,
.button::after {
  content: "";
  position: absolute;
  inset: var(--space);
  transition: all 0.5s ease-in-out;
  border-radius: calc(var(--round) - var(--space));
  z-index: 0;
}
.button::before {
  --space: 1px;
  background: linear-gradient(
    177.95deg,
    rgba(255, 255, 255, 0.19) 0%,
    rgba(255, 255, 255, 0) 100%
  );
}
.button::after {
  --space: 2px;
  background: radial-gradient(
      65.28% 65.28% at 50% 100%,
      rgba(223, 113, 255, 0.8) 0%,
      rgba(223, 113, 255, 0) 100%
    ),
    linear-gradient(0deg, #7a5af8, #7a5af8);
}
.button:active {
  transform: scale(0.95);
}

.fold {
  z-index: 1;
  position: absolute;
  top: 0;
  right: 0;
  height: 1rem;
  width: 1rem;
  display: inline-block;
  transition: all 0.5s ease-in-out;
  background: radial-gradient(
    100% 75% at 55%,
    rgba(223, 113, 255, 0.8) 0%,
    rgba(223, 113, 255, 0) 100%
  );
  box-shadow: 0 0 3px black;
  border-bottom-left-radius: 0.5rem;
  border-top-right-radius: var(--round);
}
.fold::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 150%;
  height: 150%;
  transform: rotate(45deg) translateX(0%) translateY(-18px);
  background-color: #e8e8e8;
  pointer-events: none;
}
.button:hover .fold {
  margin-top: -1rem;
  margin-right: -1rem;
}

.points_wrapper {
  overflow: hidden;
  width: 100%;
  height: 100%;
  pointer-events: none;
  position: absolute;
  z-index: 1;
}

.points_wrapper .point {
  bottom: -10px;
  position: absolute;
  animation: floating-points infinite ease-in-out;
  pointer-events: none;
  width: 2px;
  height: 2px;
  background-color: #fff;
  border-radius: 9999px;
}
@keyframes floating-points {
  0% {
    transform: translateY(0);
  }
  85% {
    opacity: 0;
  }
  100% {
    transform: translateY(-55px);
    opacity: 0;
  }
}
.points_wrapper .point:nth-child(1) {
  left: 10%;
  opacity: 1;
  animation-duration: 2.35s;
  animation-delay: 0.2s;
}
.points_wrapper .point:nth-child(2) {
  left: 30%;
  opacity: 0.7;
  animation-duration: 2.5s;
  animation-delay: 0.5s;
}
.points_wrapper .point:nth-child(3) {
  left: 25%;
  opacity: 0.8;
  animation-duration: 2.2s;
  animation-delay: 0.1s;
}
.points_wrapper .point:nth-child(4) {
  left: 44%;
  opacity: 0.6;
  animation-duration: 2.05s;
}
.points_wrapper .point:nth-child(5) {
  left: 50%;
  opacity: 1;
  animation-duration: 1.9s;
}
.points_wrapper .point:nth-child(6) {
  left: 75%;
  opacity: 0.5;
  animation-duration: 1.5s;
  animation-delay: 1.5s;
}
.points_wrapper .point:nth-child(7) {
  left: 88%;
  opacity: 0.9;
  animation-duration: 2.2s;
  animation-delay: 0.2s;
}
.points_wrapper .point:nth-child(8) {
  left: 58%;
  opacity: 0.8;
  animation-duration: 2.25s;
  animation-delay: 0.2s;
}
.points_wrapper .point:nth-child(9) {
  left: 98%;
  opacity: 0.6;
  animation-duration: 2.6s;
  animation-delay: 0.1s;
}
.points_wrapper .point:nth-child(10) {
  left: 65%;
  opacity: 1;
  animation-duration: 2.5s;
  animation-delay: 0.2s;
}

.inner {
  z-index: 2;
  gap: 6px;
  position: relative;
  width: 100%;
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  transition: color 0.2s ease-in-out;
}

.inner svg.icon {
  width: 18px;
  height: 18px;
  transition: fill 0.1s linear;
}

.button:focus svg.icon {
  fill: white;
}
.button:hover svg.icon {
  fill: transparent;
  animation:
    dasharray 1s linear forwards,
    filled 0.1s linear forwards 0.95s;
}
@keyframes dasharray {
  from {
    stroke-dasharray: 0 0 0 0;
  }
  to {
    stroke-dasharray: 68 68 0 0;
  }
}
@keyframes filled {
  to {
    fill: white;
  }
}