:root {
  --bg-1: #f7f1e3;
  --bg-2: #e8f5ea;
  --bg-3: #f3efe7;
  --panel: rgba(255, 255, 255, 0.75);
  --panel-strong: #ffffff;
  --ink: #1d1d1f;
  --muted: #5e5a53;
  --accent: #2ec4b6;
  --accent-strong: #198f86;
  --snake: #1b3b3a;
  --snake-head: #2ec4b6;
  --food: #ff6b6b;
  --grid: rgba(44, 44, 52, 0.08);
  --shadow: 0 18px 40px rgba(33, 37, 41, 0.12);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Urbanist", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px circle at 10% 0%, rgba(255, 214, 165, 0.55), transparent 55%),
    radial-gradient(850px circle at 90% 15%, rgba(145, 234, 228, 0.45), transparent 60%),
    radial-gradient(900px circle at 50% 100%, rgba(255, 231, 173, 0.35), transparent 55%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--grid) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.35;
  pointer-events: none;
}

.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 20px 40px;
  display: grid;
  gap: 22px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.topbar h1 {
  margin: 0 0 8px 0;
  font-family: "Orbitron", "Trebuchet MS", sans-serif;
  font-size: 30px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.stats {
  display: grid;
  grid-auto-flow: column;
  gap: 14px;
}

.stat {
  background: var(--panel);
  border: 1px solid rgba(29, 29, 31, 0.08);
  padding: 12px 16px;
  min-width: 110px;
  text-align: center;
  border-radius: 14px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.value {
  font-size: 22px;
  font-weight: 700;
}

.board-wrap {
  position: relative;
  display: grid;
  place-items: center;
  background: var(--panel);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(29, 29, 31, 0.08);
  backdrop-filter: blur(12px);
}

.board-wrap::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: calc(var(--radius) - 8px);
  border: 2px solid rgba(46, 196, 182, 0.18);
  pointer-events: none;
}

#board {
  background: #fbfaf8;
  border: 2px solid rgba(29, 29, 31, 0.8);
  border-radius: 12px;
  box-shadow: 0 22px 50px rgba(17, 25, 35, 0.18);
  max-width: 100%;
  height: auto;
}

.overlay {
  position: absolute;
  inset: 18px;
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  background: rgba(250, 248, 244, 0.72);
  border-radius: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
  backdrop-filter: blur(6px);
}

.overlay.show {
  opacity: 1;
}

.controls {
  display: grid;
  gap: 16px;
}

.buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid rgba(29, 29, 31, 0.8);
  background: linear-gradient(140deg, #ffffff, #f3f1ed);
  color: var(--ink);
  padding: 10px 16px;
  font-size: 14px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 10px 16px rgba(29, 29, 31, 0.08);
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 22px rgba(29, 29, 31, 0.12);
  border-color: var(--accent-strong);
}

.btn:active {
  transform: translateY(1px);
}

.dpad {
  display: grid;
  gap: 10px;
  justify-content: start;
}

.dpad .row {
  display: flex;
  gap: 10px;
}

.dpad .btn {
  min-width: 64px;
}

.footer {
  color: var(--muted);
  font-size: 13px;
}

@media (min-width: 720px) {
  .controls {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (hover: hover) and (pointer: fine) {
  .dpad {
    opacity: 0.75;
  }
}