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

@keyframes gradientBG {
  0% {background-position:0% 50%;}
  50% {background-position:100% 50%;}
  100% {background-position:0% 50%;}
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(-45deg,#6a11cb,#2575fc,#ff416c,#ff4b2b);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: #fff;
  overflow: hidden;
}

h1 {
  margin-bottom: 40px;
  font-weight: 700;
  font-size: 3rem;
  text-shadow:0 0 10px rgba(0,0,0,0.3);
}

.button-container {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  justify-content: center;
  width: 90%;
  max-width: 900px;
}

.button {
  flex: 1 1 250px;
  background: rgba(255 255 255 / 0.15);
  color: white;
  text-decoration: none;
  padding: 25px 0;
  text-align: center;
  font-size: 1.5rem;
  border-radius: 12px;
  box-shadow:0 6px 15px rgba(0 0 0 / 0.2);
  backdrop-filter: blur(10px);
  transition:0.3s;
  border: 1.5px solid rgba(255 255 255 / 0.3);
}

.button:hover, .button:focus {
  background: rgba(255 255 255 / 0.3);
  box-shadow:0 8px 20px rgba(0 0 0 / 0.35);
  outline:none;
}

.button:active {
  background: rgba(255 255 255 / 0.4);
  box-shadow:0 4px 10px rgba(0 0 0 / 0.5);
  transform: translateY(2px);
}

@media(max-width:600px) {
  .button{flex:1 1 100%;}
}
/* Gear button styles */
    .gear-button {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background: rgba(255 255 255 / 0.15);
      border: none;
      border-radius: 50%;
      width: 56px;
      height: 56px;
      cursor: pointer;
      box-shadow: 0 6px 15px rgba(0 0 0 / 0.2);
      display: flex;
      justify-content: center;
      align-items: center;
      transition: background 0.3s ease, box-shadow 0.3s ease;
      backdrop-filter: blur(10px);
      border: 1.5px solid rgba(255 255 255 / 0.3);
      color: white;
    }

    .gear-button:hover,
    .gear-button:focus {
      background: rgba(255 255 255 / 0.3);
      box-shadow: 0 8px 20px rgba(0 0 0 / 0.35);
      outline: none;
    }

    .gear-button:active {
      background: rgba(255 255 255 / 0.4);
      box-shadow: 0 4px 10px rgba(0 0 0 / 0.5);
      transform: translateY(2px);
    }

    /* Gear icon - SVG */
    .gear-icon {
      width: 28px;
      height: 28px;
      fill: currentColor;
    }