html, body {
    margin: 0;
    background: linear-gradient(135deg, #0a0a2a 0%, #1a1a3a 100%);
    overflow: hidden;
    font-family: 'Roboto', sans-serif;
}

#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#myButton {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    position: relative;
    z-index: 2;
    opacity: 0;
    visibility: hidden;
}

.window-hint {
    position: fixed;
    bottom: 70px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 17px;
    font-weight: 400;
    text-align: center;
    max-width: 5000px;
    line-height: 1.4;
    pointer-events: none;
    z-index: 2;
    opacity: 0;
}

.start-button {
    appearance: none;
    background: radial-gradient(circle, 
        rgba(42, 42, 138, 0.8) 0%,
        rgba(42, 42, 138, 0.6) 50%,
        rgba(42, 42, 138, 0.4) 75%,
        rgba(42, 42, 138, 0.2) 100%
    );
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-style: none;
    cursor: none !important;
    padding: 15px 30px;
    position: relative;
    transition: all 0.3s ease;
    border-radius: 30px;
    box-shadow: 0 0 20px rgba(74, 74, 154, 0.2);
    backdrop-filter: blur(5px);
}

.button-text {
    color: #fff;
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
    font-family: 'Roboto', sans-serif;
}

.button-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, 
        rgba(255,255,255,0.3) 0%,
        rgba(255,255,255,0.2) 50%,
        rgba(255,255,255,0.1) 100%
    );
    border-radius: 30px;
    opacity: 0;
    transition: all 0.3s ease;
}

.start-button:hover {
    background: radial-gradient(circle, 
        rgba(42, 42, 138, 0.9) 0%,
        rgba(42, 42, 138, 0.7) 50%,
        rgba(42, 42, 138, 0.5) 75%,
        rgba(42, 42, 138, 0.3) 100%
    );
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.3), 0 0 20px rgba(255, 255, 255, 0.5), 0 0 10px rgba(255, 255, 255, 0.8);
}

.start-button:hover .button-glow {
    opacity: 1;
}

.start-button:hover .button-text {
    text-shadow: 0 0 10px rgba(255,255,255,0.5);
}

.start-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
        rgba(255,255,255,0.2) 0%,
        rgba(255,255,255,0.1) 25%,
        rgba(255,255,255,0.2) 50%,
        rgba(255,255,255,0.1) 75%,
        rgba(255,255,255,0.2) 100%
    );
    border-radius: 30px;
    opacity: 0;
    transition: all 0.3s ease;
}

.start-button:hover::before {
    opacity: 0.5;
}

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

.start-button {
    animation: float 3s ease-in-out infinite;
}

@keyframes shrinkToCenter {
  0% {
      opacity: 1;
      transform: scale(1) translate(0, 0);
  }
  100% {
      opacity: 0;
      transform: scale(0.1) translate(0, 0);
  }
}

.shrinking {
  animation: shrinkToCenter 1.5s ease-out forwards;
}

@keyframes fadeIn {
    0% {
        opacity: 0;
        visibility: visible;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 2s ease-out forwards;
}

.message-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-family: 'Roboto', sans-serif;
    font-size: 24px;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 2s ease-in-out;
    z-index: 1000;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.message-container.visible {
    opacity: 1;
    visibility: visible;
}