/* Snake Game Styles aligned with portfolio theme */

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }

:root {
  /* Colors (from portfolio) */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #111111;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-accent: #0066ff;
  --color-accent-dark: #0052cc;
  --color-gradient-start: #0066ff;
  --color-gradient-end: #00d4ff;

  /* Typography */
  --font-primary: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

body {
  margin: 0;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font: 16px/1.6 var(--font-primary);
  display: grid;
  grid-template-rows: auto auto 1fr auto;
}

header.title {
  padding: 16px 18px;
  text-align: center;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-weight: 700;
  letter-spacing: 0.2px;
  position: relative;
}
header.title h1 {
  margin: 0;
  font-size: clamp(1.2rem, 3.5vw, 1.6rem);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-gradient-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Back Home button */
.back-home {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--color-text-primary);
  background: transparent;
  transition: all 0.25s ease;
  font-family: var(--font-primary);
}
.back-home:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--color-accent);
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.hud .score, .hud .best { color: var(--color-text-secondary); }
.hud .controls { display: flex; gap: 10px; }

button {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: var(--font-primary);
}
button:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--color-accent);
}
button:active { transform: translateY(1px); }

.stage {
  position: relative;
  display: grid;
  place-items: center;
  padding: 20px;
}

canvas#board {
  width: min(90vmin, 700px);
  height: min(90vmin, 700px);
  background: radial-gradient(120% 120% at 0% 0%, #0e1330 0%, #0c112a 40%, #0a0f25 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  image-rendering: pixelated;
  box-shadow: 0 20px 60px rgba(0, 102, 255, 0.25), inset 0 0 0 1px rgba(255,255,255,0.03);
}

.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text-primary);
  font-weight: 700;
  text-align: center;
  pointer-events: none;
  background: transparent;
  white-space: pre-line;
}

.help {
  padding: 12px 18px 20px 18px;
  color: var(--color-text-secondary);
  text-align: center;
}

/* Touch controls shown for coarse pointers (most phones) */
.touch-controls {
  display: none;
  position: fixed;
  right: 10px;
  bottom: 10px;
  gap: 8px;
  user-select: none;
}
.touch-controls button {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--color-text-primary);
  font-size: 20px;
}
.touch-controls .middle { display: flex; gap: 8px; align-items: center; }

@media (pointer: coarse) {
  .touch-controls { display: grid; }
}