*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */

.site-header {
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
}

.site-header .logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* Hero */

.hero {
  padding: 48px 0 32px;
  text-align: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 44px);
  margin: 0 0 12px;
}

.hero p {
  color: var(--color-muted);
  margin: 0;
}

/* Main */

.site-main {
  min-height: 60vh;
  padding: 24px 0 64px;
}

/* Game grid */

.game-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (min-width: 640px) {
  .game-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .game-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.game-card {
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  touch-action: manipulation;
}

.game-card .thumb {
  aspect-ratio: 3 / 2;
  width: 100%;
  object-fit: cover;
}

.game-card .info {
  padding: 12px 16px 16px;
}

/* Game play page */

.game-stage {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  background: var(--color-text);
  border-radius: var(--radius-card);
  overflow: hidden;
}

/* Footer */

.site-footer {
  background: var(--color-surface);
  padding: 32px 0;
  text-align: center;
  color: var(--color-muted);
}

/* Utility */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}