:root {
  --base-font-size: 16px;
  --min-font-size: 14px;
  --max-font-size: 22px;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  font-size: var(--base-font-size);
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0b0614;
  color: #f9f5ff;
}
#app {
  max-width: 720px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 1.5rem 1rem 2rem;
}
.app-header {
  text-align: center;
  margin-bottom: 1.25rem;
}
#kwehst-logo {
  display: block;
  margin: 0 auto 0.75rem;
  max-width: 180px;
  max-height: 120px;
  object-fit: contain;
}
.text-size-controls {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}
.text-size-controls button {
  border: none;
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  background: #22213a;
  color: white;
  cursor: pointer;
}
.main-menu {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.menu-btn {
  border: none;
  border-radius: 0.9rem;
  padding: 0.9rem;
  background: #6c35c7;
  color: white;
  cursor: pointer;
}
.content-section {
  display: none;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 1rem;
  padding: 1rem;
}
.content-section.active {
  display: block;
}
.menu-btn {
  font-size: 1.25rem;
  padding: 1.1rem 0.6rem;
}