/* RESET */
* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  background: #000;
  font-family: 'Segoe UI', sans-serif;
  overflow: hidden;
  color: #fff;
}

/* BACKGROUND CANVAS */
#background-canvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
}

/* HEADER */
.header {
  position: absolute;
  top: 30px;
  left: 30px;
  z-index: 2;
}

.logo {
  width: 200px;
  height: auto;
}

/* MAIN CONTENT */
.main-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  padding: 20px;
  text-align: center;
}

.headline {
  font-size: 3rem;
  margin-bottom: 30px;
  text-shadow: 0 0 20px #FFD700;
}

/* BANNER */
.banner-wrapper {
  max-width: 600px;
  width: 90%;
  margin-bottom: 40px;
}

.banner {
  width: 100%;
  animation: floatY 5s ease-in-out infinite;
  filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.4));
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* BUTTONS */
.button-group {
  display: flex;
  gap: 25px;
  flex-wrap: wrap;
}

.btn {
  padding: 14px 36px;
  font-size: 1rem;
  font-weight: bold;
  background: #000;
  border: 2px solid #FFD700;
  border-radius: 30px;
  color: #FFD700;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 0 10px #FFD70055;
  transition: all 0.3s ease;
}

.btn:hover {
  background: #FFD700;
  color: #000;
  animation: vibrate 0.2s infinite, blink 1s infinite;
}

@keyframes vibrate {
  0% { transform: translate(0); }
  25% { transform: translate(1px, -1px); }
  50% { transform: translate(-1px, 1px); }
  75% { transform: translate(1px, 1px); }
  100% { transform: translate(0); }
}

@keyframes blink {
  0%, 100% { box-shadow: 0 0 10px #FFD700; }
  50% { box-shadow: 0 0 20px #FFD700; }
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .headline { font-size: 2rem; }
  .logo { width: 90px; }
  .btn { padding: 12px 24px; font-size: 0.95rem; }
}

@media (max-width: 480px) {
  .button-group { flex-direction: column; gap: 16px; }
  .btn { width: 100%; text-align: center; }
}