:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

body {
  background: #000000;
  color: #ffffff;
  overflow: hidden;
}

.boot-screen {
  height: 100vh;
  display: grid;
  place-items: center;
}

.boot-container {
  display: grid;
  gap: 24px;
  align-items: center;
  grid-template-columns: 80px 1fr;
  max-width: 400px;
}

.os-mark {
  width: 80px;
  height: 80px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  font-size: 32px;
  font-weight: 700;
  color: #000000;
  background: #ffffff;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.boot-text {
  display: grid;
  gap: 8px;
}

.system-name {
  font-size: 28px;
  font-weight: 300;
  letter-spacing: -0.02em;
}

.boot-status {
  font-size: 14px;
  color: #888888;
  font-weight: 400;
}

@media (max-width: 480px) {
  .boot-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .system-name {
    font-size: 24px;
  }
}