body {
      background-image: url('background.png');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      background-attachment: fixed;
      font-family: 'Roboto', sans-serif;
      color: #fff;
    }
    header {
      background-color: rgba(0, 0, 0, 0.75);
      color: white;
      padding: 2rem 1rem;
      border-bottom: 5px solid #4CAF50;
      text-align: center;
      font-family: 'Orbitron', sans-serif;
      position: relative;
      overflow: hidden;
    }
    .logo-wrapper {
      position: relative;
      display: inline-block;
    }
    .curtain {
      position: absolute;
      top: 0;
      height: 100%;
      width: 50%;
      background: url('curtain.png') center center / cover no-repeat;
      z-index: 2;
      animation: openCurtain 2.5s ease-out forwards;
    }
    .curtain-left { left: 0; animation-delay: 0s; }
    .curtain-right { right: 0; animation-delay: 0s; }
    @keyframes openCurtain {
      0% { width: 50%; opacity: 1; }
      100% { width: 0%; opacity: 0; }
    }
    .logo-animated {
      animation: fadeInLogo 0.5s ease-in-out 0.5s forwards;
      filter: drop-shadow(0 0 10px #4CAF50) drop-shadow(0 0 20px #4CAF50);
      opacity: 0;
      max-width: 300px;
      height: auto;
    }
    @keyframes fadeInLogo {
      0% { opacity: 0; }
      100% { opacity: 1; }
    }
    .flipbook-section {
      background: rgba(255, 255, 255, 0.92);
      padding: 2rem;
      border-radius: 15px;
      box-shadow: 0 0 20px rgba(0,0,0,0.4);
      color: #000;
    }
    .btn-custom {
      background-color: #4CAF50;
      color: white;
      font-weight: bold;
    }
    .btn-custom:hover {
      background-color: #388e3c;
    }
    footer {
      background: #111;
      color: white;
      text-align: center;
      padding: 1rem 0;
      font-size: 0.9rem;
    }
    .hover-card {
      background: rgba(255,255,255,0.92);
      border-radius: 10px;
      box-shadow: 0 0 15px rgba(0,0,0,0.3);
      color: #000;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .hover-card:hover {
      transform: scale(1.05);
      box-shadow: 0 0 30px rgba(0,0,0,0.4);
    }
    .tech-nature {
      background: rgba(0,0,0,0.65);
      border: 2px solid #4CAF50;
      border-radius: 15px;
      padding: 2rem;
      text-align: center;
    }
    .tech-nature h2 {
      font-size: 2rem;
      color: #ffffff;
      font-family: 'Orbitron', sans-serif;
    }
    .tech-nature p {
      font-size: 1.1rem;
      color: #e0f2f1;
      font-family: 'Orbitron', sans-serif;
    }
    h3 {
      color: #000;
      font-family: 'Orbitron', sans-serif;
    }
    @media (max-width: 768px) {
      body {
        background-size: cover;
        background-position: center center;
        background-attachment: scroll;
      }
      header img {
        max-width: 80%;
        height: auto;
      }
    }
    .footer-link {
  color: #ffffff;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s ease;
}

.footer-link:hover {
  color: #2196f3;
  text-shadow: 0 0 10px #2196f3, 0 0 20px #2196f3;
}

    /* Fix Heyzine Flipbook overflow */
iframe {
  max-width: 100%;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
  background: #fff;
}

/* Extra responsiveness */
@media (max-width: 768px) {
  iframe {
    height: 70vw;
    aspect-ratio: auto;
  }
}
.flipbook-wrapper {
  padding: 1rem;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
}
.flipbook-wrapper iframe {
  max-width: 100%;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
  background: #fff;
}

@media (max-width: 768px) {
  .flipbook-wrapper iframe {
    height: 65vw;
    aspect-ratio: auto;
  }
}

.btn-outline-dark {
  border: 2px solid #000;
  color: #000;
  font-weight: bold;
}

.btn-outline-dark:hover {
  background: #000;
  color: #fff;
}
#countdown-section {
  background: radial-gradient(ellipse at center, #0f2027, #203a43, #2c5364);
  border: 2px solid #4CAF50;
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 0 20px #00ff88;
  position: relative;
  z-index: 1;
}

.countdown-box {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  color: #ffffff;
  background: rgba(0,0,0,0.4);
  border-radius: 15px;
  box-shadow: 0 0 20px rgba(0,255,255,0.3);
}

.neon-frame {
  border: 2px solid rgba(0, 255, 255, 0.3);
  box-shadow: 0 0 20px rgba(0,255,255,0.5), inset 0 0 20px rgba(0,255,255,0.3);
  border-radius: 20px;
}

.time-box {
  min-width: 90px;
  padding: 1rem;
  border-radius: 10px;
  background-color: rgba(0,0,0,0.7);
  box-shadow: inset 0 0 10px #00e5ff, 0 0 20px rgba(0,255,0,0.2);
  color: #ffffff;
  text-shadow: 0 0 5px #4CAF50;
}

.pulse {
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Leaves animation (nature effect) */
.leaf-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.leaf {
  position: absolute;
  width: 40px;
  opacity: 0.8;
  animation: fall 10s linear infinite;
}

.leaf1 { left: 10%; animation-delay: 0s; }
.leaf2 { left: 45%; animation-delay: 3s; }
.leaf3 { left: 75%; animation-delay: 6s; }

@keyframes fall {
  0% { top: -100px; transform: rotate(0deg); }
  100% { top: 100%; transform: rotate(0deg); }
}
*{
  font-family: 'Orbitron', sans-serif;
}
.glitch-text {
      font-size: 4rem;
      font-weight: 800;
      position: relative;
      color: #00ff00;
      text-align: center;
      animation: glitch-flicker 0.8s infinite alternate;
    }

    .glitch-text::before,
    .glitch-text::after {
      content: 'ALPHIA 2K25 — A Successful Conclusion!';
      position: absolute;
      left: 0;
      width: 100%;
      opacity: 0.7;
    }

    .glitch-text::before {
      color: red;
      top: -2px;
      left: 2px;
      animation: glitch-anim 1s infinite linear alternate-reverse;
    }

    .glitch-text::after {
      color: blue;
      top: 2px;
      left: -2px;
      animation: glitch-anim 1.2s infinite linear alternate-reverse;
    }

    @keyframes glitch-anim {
      0% { clip-path: inset(0 0 80% 0); }
      20% { clip-path: inset(20% 0 60% 0); }
      40% { clip-path: inset(40% 0 40% 0); }
      60% { clip-path: inset(60% 0 20% 0); }
      80% { clip-path: inset(80% 0 0 0); }
      100% { clip-path: inset(0 0 0 0); }
    }

    @keyframes glitch-flicker {
      0% { opacity: 1; }
      50% { opacity: 0.6; }
      100% { opacity: 1; transform: scale(1.02); }
    }

    .overlay {
      position: fixed;
      top: 0; left: 0;
      width: 100%;
      height: 100%;
      background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 0, 0.02),
        rgba(0, 255, 0, 0.02) 1px,
        transparent 1px,
        transparent 2px
      );
      pointer-events: none;
      z-index: 999;
      animation: scan 3s infinite linear;
    }

    @keyframes scan {
      0% { background-position: 0 0; }
      100% { background-position: 0 100%; }
    }