@import 'normilize.css';
@import 'game.css';

/* fonts */
@font-face {
  font-family: 'OpenSans';
  src: '../fonts/OpenSans-Regular.woff2';
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'OpenSans';
  src: '../fonts/OpenSans-Bold.woff2';
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

body {
  font-family: 'OpenSans', sans-serif;

  margin: 0;
  padding: 0;
  box-sizing: border-box;
  height: 100dvh;

  --gap-size: 25px;
  --line-thickness: 1px;

  --background-color: #111;
  --line-color: #333;

  background-color: var(--background-color);
  background-image:
    repeating-linear-gradient(
      var(--line-color) 0 var(--line-thickness),
      transparent var(--line-thickness) var(--gap-size)
    ),
    repeating-linear-gradient(
      90deg,
      var(--line-color) 0 var(--line-thickness),
      transparent var(--line-thickness) var(--gap-size)
    );
  background-size:
    100% var(--gap-size),
    var(--gap-size) 100%;
  animation: scroll 3s linear infinite;
}

.fading {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
    to top,
    var(--background-color),
    transparent 30%
  );
}

@keyframes scroll {
  0% {
    background-position:
      0 0,
      0 0;
  }
  100% {
    background-position:
      0 var(--gap-size),
      0 0;
  }
}

* {
  padding: 0;
  margin: 0;
  list-style: none;
  text-decoration: none;
  box-sizing: border-box;
  outline: none;
}

.container {
  max-width: 1620;
  padding: 0 20px;
  align-items: center;
  margin: 0 auto;
}

.start-content {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100vh;
  text-align: center;
}

.start-content h1 {
  font-size: 72px;
  margin-bottom: 40px;
  color: white;

  letter-spacing: 2px;

  text-shadow:
    0 0 10px rgba(255, 255, 255, 0.8),
    0 0 20px rgba(255, 255, 255, 0.6),
    0 0 40px rgba(255, 255, 255, 0.4);

  animation: titleFade 1.2s ease;
}

@keyframes titleFade {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.start-content a {
  padding: 15px 50px;
  border-radius: 50px;

  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;

  color: white;
  text-decoration: none;

  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.3);

  backdrop-filter: blur(10px);

  box-shadow:
    0 0 10px rgba(255, 255, 255, 0.3),
    inset 0 0 10px rgba(255, 255, 255, 0.2);

  transition: all 0.25s ease;
}

.start-content a {
  animation: btnPulse 2s infinite alternate;
}

@keyframes btnPulse {
  from {
    box-shadow:
      0 0 10px rgba(255, 255, 255, 0.3),
      inset 0 0 10px rgba(255, 255, 255, 0.2);
  }
  to {
    box-shadow:
      0 0 20px rgba(255, 255, 255, 0.6),
      inset 0 0 20px rgba(255, 255, 255, 0.4);
  }
}

.start-content a:hover {
  transform: scale(1.15);

  background: white;
  color: black;

  box-shadow:
    0 0 20px white,
    0 0 40px white,
    0 0 80px rgba(255, 255, 255, 0.8);
}