:root {
        --bg1: #001a33; /* biru sangat gelap */
        --bg2: #0b3d91; /* biru tua */
        --bg3: #0b7bd6; /* biru utama */
        --bg4: #4db8ff; /* biru terang */
        --acc1: #00cfff;
        --acc2: #3399ff;
        --acc3: #66ccff;
        --text: #ffffff;
        --muted: #cdd6f4;
        --glass: rgba(255, 255, 255, 0.06);
        --glass-br: rgba(255, 255, 255, 0.14);
      }
      * {
        box-sizing: border-box;
      }
      html,
      body {
        height: 100%;
      }
      body {
        margin: 0;
        font-family: Poppins, system-ui, sans-serif;
        color: var(--text);
        background: linear-gradient(
          180deg,
          var(--bg1),
          var(--bg2),
          var(--bg3),
          var(--bg4)
        );
        overflow-x: hidden;
      }

      /* ===== Parallax Layers ===== */
      .parallax {
        position: fixed;
        inset: 0;
        pointer-events: none;
        overflow: hidden;
        z-index: -1;
      }
      .layer {
        position: absolute;
        inset: 0;
        background-repeat: no-repeat;
        background-size: cover;
        will-change: transform;
      }

      /* Stars */
      .stars {
        background-image: url("https://www.transparenttextures.com/patterns/stardust.png");
        opacity: 0.4;
      }

      /* Aurora biru */
      .aurora {
        background: radial-gradient(
            600px 300px at 70% 20%,
            rgba(0, 159, 255, 0.25),
            transparent 70%
          ),
          radial-gradient(
            500px 300px at 30% 60%,
            rgba(0, 219, 255, 0.25),
            transparent 70%
          ),
          radial-gradient(
            800px 500px at 50% 80%,
            rgba(77, 184, 255, 0.25),
            transparent 70%
          );
        filter: blur(40px);
        mix-blend-mode: screen;
        opacity: 0.9;
        animation: drift 18s ease-in-out infinite alternate;
      }

     /* ===== Shooting Stars ===== */
.shooting-stars span {
  position: absolute;
  width: 2px;
  height: 80px;
  background: linear-gradient(180deg, white, transparent);
  opacity: 0.8;
  transform: rotate(45deg);
  animation: shoot 3s linear infinite;
}

.shooting-stars span:nth-child(2n) {
  animation-duration: 4s;
}
.shooting-stars span:nth-child(3n) {
  animation-duration: 5s;
}
.shooting-stars span:nth-child(odd) {
  background: linear-gradient(180deg, #a5d8ff, transparent);
}

@keyframes shoot {
  0% {
    transform: translateX(0) translateY(0) rotate(45deg);
    opacity: 1;
  }
  100% {
    transform: translateX(-400px) translateY(400px) rotate(45deg);
    opacity: 0;
  }
}


      /* ===== Content ===== */
      main {
        min-height: 100dvh;
        display: grid;
        place-items: center;
        padding: 4rem 1rem;
      }
      .card {
        width: min(980px, 94vw);
        background: linear-gradient(
          180deg,
          rgba(255, 255, 255, 0.04),
          rgba(255, 255, 255, 0.02)
        );
        border: 1px solid var(--glass-br);
        box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
        border-radius: 28px;
        padding: clamp(1.25rem, 2.5vw, 2.25rem);
        backdrop-filter: blur(12px);
        text-align: center;
        position: relative;
        overflow: hidden;
      }
      .badge {
        display: inline-flex;
        gap: 0.5rem;
        align-items: center;
        padding: 0.35rem 0.75rem;
        border-radius: 999px;
        font-weight: 600;
        font-size: 0.85rem;
        background: linear-gradient(90deg, var(--acc2), var(--acc1));
        color: #001022;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
      }
      h1 {
        font-size: clamp(2rem, 5vw, 3.25rem);
        line-height: 1.05;
        margin: 0.6rem 0 0;
      }
      .subtitle {
        color: var(--muted);
        font-weight: 400;
        margin: 0.45rem 0 1rem;
      }

      /* Countdown */
      .countdown {
        display: flex;
        gap: 12px;
        justify-content: center;
        margin-top: 1.25rem;
        flex-wrap: wrap;
      }
      .countdown .unit {
        background: linear-gradient(
          180deg,
          rgba(255, 255, 255, 0.02),
          rgba(255, 255, 255, 0.01)
        );
        padding: 0.8rem 1rem;
        border-radius: 12px;
        min-width: 90px;
      }
      .countdown .value {
        font-size: 1.5rem;
        font-weight: 800;
        letter-spacing: 0.5px;
      }
      .countdown .label {
        font-size: 0.8rem;
        color: var(--muted);
        margin-top: 0.25rem;
      }

      .typing {
        display: inline-block;
        white-space: nowrap;
        overflow: hidden;
        font-weight: 800;
        letter-spacing: 0.5px;
        color: var(--text);
        border-right: 2px solid #fff; /* kursor */
        animation: typing 5s steps(12, end) infinite alternate,
          blink 0.8s step-end infinite;
      }

      @keyframes typing {
        from {
          width: 0;
        }
        to {
          width: 13ch;
        } /* jumlah karakter "Coming Soon" */
      }

      @keyframes blink {
        50% {
          border-color: transparent;
        }
      }

      .actions {
        margin-top: 1.35rem;
        display: flex;
        gap: 0.75rem;
        justify-content: center;
        flex-wrap: wrap;
      }
      .btn {
        --padx: 1.15rem;
        --pady: 0.8rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        padding: var(--pady) var(--padx);
        border-radius: 12px;
        font-weight: 700;
        letter-spacing: 0.3px;
        text-decoration: none;
        transition: all 0.2s ease;
      }
      .btn-primary {
        background: linear-gradient(
          90deg,
          var(--acc2),
          var(--acc1),
          var(--acc3)
        );
        color: #001022;
        box-shadow: 0 10px 26px rgba(0, 0, 0, 0.28);
      }
      .btn-primary:hover {
        transform: translateY(-3px);
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
      }
      .btn-ghost {
        color: var(--text);
        border: 1px solid var(--glass-br);
        background: var(--glass);
      }

      .note {
        margin-top: 1rem;
        font-size: 0.9rem;
        color: var(--muted);
      }

      .waves {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 200%;
        height: 300px;
        display: flex;
        z-index: -1;
        overflow: hidden;
        animation: waveMove 8s linear infinite;
      }

      .waves svg {
        flex: 0 0 50%;
        height: 100%;
      }

      @keyframes waveMove {
        0% {
          transform: translateX(0);
        }
        100% {
          transform: translateX(-50%);
        }
      }

      /* responsive */
      @media (max-width: 520px) {
        .countdown .value {
          font-size: 1.1rem;
        }
        .countdown .unit {
          min-width: 68px;
          padding: 0.6rem 0.6rem;
        }
      }

      /* Loader Fullscreen */
#loader {
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, var(--bg1), var(--bg3));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#loader.hide {
  opacity: 0;
  visibility: hidden;
}

/* Spinner animasi */
.spinner {
  width: 100px;
  height: 100px;
  border: 6px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--acc1);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}