/* ===================================================
   LumoArcadia - Base do jogo Snake
=================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-dark:      #07070f;
  --bg-card:      #0d0d1a;
  --bg-card-hover:#111126;
  --neon-cyan:    #00f5ff;
  --neon-pink:    #ff2d78;
  --neon-green:   #39ff14;
  --neon-yellow:  #ffe600;
  --neon-purple:  #bf00ff;
  --accent:       var(--neon-cyan);
  --text-primary: #e8e8f8;
  --text-muted:   #7070a0;
  --border-dim:   rgba(0,245,255,0.12);
  --border-glow:  rgba(0,245,255,0.5);
  --font-display: 'Orbitron', monospace;
  --font-body:    'Rajdhani', sans-serif;
  --gap-sm: .75rem; --gap-md: 1.5rem; --gap-lg: 3rem; --gap-xl: 5rem;
  --radius: 6px; --radius-lg: 12px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
  --snake-board-size: min(860px, 96vmin, calc(100vh - 260px));
}

html { font-size: 16px; }
body {
  background: #060610;
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font-display); }
::selection { background: #39ff14; color: #060610; }

/* ============================================
   SNAKE GAME - Overlay & UI
============================================ */
#snakeOverlay {
  display: none;
  position: fixed; inset: 0; z-index: 1000;
  background: #060610;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: 1rem;
  overflow-y: auto;
}
#snakeOverlay.open { display: flex; }

.snake-header {
  width: min(860px, 96vw); max-width: none;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 .25rem .35rem;
  font-family: var(--font-display);
}
.snake-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent; border: 1px solid rgba(57,255,20,.4);
  color: #39ff14; font-family: var(--font-display);
  font-size: .65rem; letter-spacing: .2em;
  padding: .45em .9em; border-radius: 4px; cursor: pointer;
  text-decoration: none;
  transition: background .2s, box-shadow .2s;
}
.snake-back:hover { background: #39ff14; color: #060610; box-shadow: 0 0 16px #39ff14; }

.snake-scores {
  display: flex; gap: 1.5rem; font-size: .7rem; letter-spacing: .15em;
}
.snake-score-item { display: flex; flex-direction: column; align-items: flex-end; }
.snake-score-label { color: #7070a0; font-size: .6rem; }
.snake-score-value { color: #39ff14; text-shadow: 0 0 8px #39ff14; font-size: 1rem; }

/* Canvas wrapper */
.snake-canvas-wrap {
  position: relative;
  width: var(--snake-board-size);
  height: auto;
  aspect-ratio: 1 / 1;
  flex: 0 0 auto;
  margin: .2rem auto;
  border: 1px solid rgba(57,255,20,.25);
  border-radius: 8px; overflow: hidden;
  box-shadow: 0 0 30px rgba(57,255,20,.08);
}
#gameCanvas { display: block; width: 100%; height: 100%; object-fit: contain; }

/* Start / Game Over screens */
.snake-screen {
  position: absolute; inset: 0;
  background: rgba(6,6,16,.92);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 1.2rem;
  font-family: var(--font-display);
  text-align: center; padding: 2rem;
}
.snake-screen.hidden { display: none; }
.snake-screen-title { font-size: clamp(1.4rem,5vw,2.2rem); font-weight: 900; letter-spacing: .1em; color: #39ff14; text-shadow: 0 0 24px #39ff14; }
.snake-screen-sub { font-size: .8rem; color: #7070a0; letter-spacing: .1em; line-height: 1.7; }
.snake-screen-score { font-size: 1rem; color: #e8e8f8; letter-spacing: .1em; }
.snake-screen-score span { color: #39ff14; font-size: 1.6rem; }
.snake-new-record { color: #ffe600; text-shadow: 0 0 12px #ffe600; font-size: .75rem; letter-spacing: .2em; }
.snake-new-record.hidden { display: none; }
.snake-btn {
  background: transparent; border: 1px solid #39ff14;
  color: #39ff14; font-family: var(--font-display);
  font-size: .75rem; letter-spacing: .25em;
  padding: .75em 2em; border-radius: 4px; cursor: pointer;
  transition: background .2s, color .2s, box-shadow .2s;
}
.snake-btn:hover { background: #39ff14; color: #060610; box-shadow: 0 0 24px #39ff14; }

/* D-pad mobile */
.dpad-wrap {
  display: grid;
  grid-template-areas: ". up ." "left . right" ". down .";
  grid-template-columns: 44px 44px 44px;
  grid-template-rows: 44px 44px 44px;
  gap: 4px; margin: .35rem auto .25rem;
}
.dpad-btn {
  background: rgba(57,255,20,.08); border: 1px solid rgba(57,255,20,.3);
  color: #39ff14; font-size: 1.2rem;
  border-radius: 6px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s, box-shadow .15s;
  touch-action: manipulation;
  -webkit-user-select: none; user-select: none;
}
.dpad-btn:active, .dpad-btn:hover { background: rgba(57,255,20,.22); box-shadow: 0 0 10px rgba(57,255,20,.4); }
#btnUp    { grid-area: up; }
#btnDown  { grid-area: down; }
#btnLeft  { grid-area: left; }
#btnRight { grid-area: right; }

.snake-hint { font-family: var(--font-display); font-size: .58rem; letter-spacing: .12em; color: #7070a0; text-align: center; margin: .2rem 0 .25rem; }

@media(max-width:720px){
  #snakeOverlay { justify-content: flex-start; padding: .75rem .5rem; }
  .snake-canvas-wrap { width: min(96vw, 70vh); height: min(96vw, 70vh); }
  .snake-header { width: 96vw; padding-left: .25rem; padding-right: .25rem; }
}

@media(max-width:520px){
  .snake-canvas-wrap { width: 96vw; height: 96vw; }
  .snake-header { padding-left: .5rem; padding-right: .5rem; }
}