:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --accent-color: #000000;
  --transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: var(--bg-color);
  font-family: 'Inter', -apple-system, sans-serif;
}

.parallax {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1000px;
}

.parallax__container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
}

.parallax__canvas {
  max-width: 100%;
  max-height: 100%;
  margin: auto;
  display: block;
  transition: transform 0.1s ease-out; 
}

@media (max-width: 768px) {
  .parallax {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
  }

  .btn-start {
    padding: 18px 50px;
    width: 80%;
    max-width: 300px;
    font-size: 18px;
    -webkit-tap-highlight-color: transparent;
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  .parallax__canvas {
    height: 90vh;
    width: auto;
  }
  
  .loader__text {
    font-size: 12px;
  }
}

body {
  overscroll-behavior: none;
  touch-action: none;
}

.loader {
  position: absolute;
  inset: 0;
  background: var(--bg-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: opacity var(--transition), visibility var(--transition);
}

.loader--hidden {
  opacity: 0;
  visibility: hidden;
}

.loader__text {
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #999;
}

.btn-start {
  padding: 15px 40px;
  background: transparent;
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  cursor: pointer;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: all 0.3s ease;
  outline: none;
}

.btn-start:hover {
  background: var(--accent-color);
  color: #fff;
}