/* ================================================================
   Snake  style.css
   Full-screen responsive layout, Nokia phosphor-green theme.
   ================================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green:       #4dff4d;
  --green-dim:   #2b7a2b;
  --green-glow:  rgba(77, 255, 77, 0.15);
  --bg-deep:     #030805;
  --bg-screen:   #0a1505;
  --overlay-bg:  rgba(3, 8, 5, 0.94);
  --box-bg:      #0a1505;
  --red:         #ff5555;
  --yellow:      #ffff55;
  --muted:       #2b7a2b;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-deep);
  font-family: 'Courier New', Courier, monospace;
  color: var(--green);
  -webkit-font-smoothing: antialiased;
}

/* -- Main layout -- */

#game-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  padding: 8px;
  gap: 8px;
}

#game-canvas {
  display: block;
  flex-shrink: 0;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  box-shadow:
    0 0 0 1px var(--green-dim),
    0 0 32px var(--green-glow),
    0 0 64px rgba(77, 255, 77, 0.05);
}

/* -- Touch D-pad -- */

#touch-controls {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

@media (max-width: 800px), (pointer: coarse) {
  #touch-controls { display: flex; }
}

.tc-row {
  display: flex;
  gap: 4px;
}

.tc-btn {
  width: 54px;
  height: 44px;
  background: rgba(77, 255, 77, 0.05);
  border: 1px solid var(--green-dim);
  border-radius: 6px;
  color: var(--green);
  font-size: 18px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: background 0.08s, border-color 0.08s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tc-btn:active {
  background: rgba(77, 255, 77, 0.2);
  border-color: var(--green);
}

.tc-pause {
  font-size: 13px;
  color: var(--muted);
  border-color: var(--muted);
}

/* -- Overlays -- */

.hidden { display: none !important; }

.overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
}

/* -- Modal box -- */

.box {
  background: var(--box-bg);
  border: 1px solid var(--green-dim);
  box-shadow:
    0 0 0 1px rgba(77, 255, 77, 0.06),
    0 0 48px rgba(77, 255, 77, 0.18),
    inset 0 0 40px rgba(0, 0, 0, 0.55);
  padding: 32px 40px;
  text-align: center;
  width: min(400px, 90vw);
}

.box-title {
  font-size: clamp(18px, 4vw, 26px);
  font-weight: bold;
  letter-spacing: 4px;
  margin-bottom: 12px;
}

.box-title.red   { color: var(--red);   }
.box-title.green { color: var(--green); }

.box-score {
  font-size: clamp(12px, 2.5vw, 15px);
  color: var(--green);
  letter-spacing: 2px;
  margin-bottom: 20px;
  min-height: 1.4em;
}

/* -- Name input -- */

.box-label {
  display: block;
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 3px;
  margin-bottom: 10px;
}

#name-input {
  display: block;
  margin: 0 auto 18px;
  width: 116px;
  background: #050d02;
  border: 1px solid var(--green-dim);
  color: var(--green);
  font-family: 'Courier New', monospace;
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  padding: 8px 4px;
  letter-spacing: 14px;
  text-transform: uppercase;
  outline: none;
  caret-color: var(--green);
  transition: border-color 0.15s, box-shadow 0.15s;
}

#name-input:focus {
  border-color: var(--green);
  box-shadow: 0 0 16px rgba(77, 255, 77, 0.28);
}

/* -- Buttons -- */

.box-btn {
  display: block;
  width: 100%;
  background: none;
  border: 1px solid var(--green);
  color: var(--green);
  font-family: 'Courier New', monospace;
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 2px;
  padding: 11px 0;
  cursor: pointer;
  transition: background 0.1s, box-shadow 0.1s;
  margin-bottom: 8px;
}

.box-btn:hover,
.box-btn:focus {
  background: rgba(77, 255, 77, 0.1);
  box-shadow: 0 0 14px rgba(77, 255, 77, 0.2);
  outline: none;
}

.box-btn-ghost {
  background: none;
  border: none;
  color: var(--muted);
  font-family: 'Courier New', monospace;
  font-size: 10px;
  letter-spacing: 1px;
  padding: 4px 0;
  cursor: pointer;
  transition: color 0.1s;
  width: 100%;
}

.box-btn-ghost:hover { color: var(--green); }

/* -- Leaderboard table -- */

#lb-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 22px;
  font-size: clamp(11px, 2.2vw, 13px);
}

#lb-table thead tr {
  border-bottom: 1px solid var(--green-dim);
}

#lb-table th {
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 3px;
  padding: 4px 10px 8px;
  font-weight: normal;
  text-align: center;
}

#lb-table td {
  padding: 6px 10px;
  text-align: center;
  color: var(--muted);
}

#lb-table tbody tr:nth-child(1) td { color: var(--yellow); font-weight: bold; }
#lb-table tbody tr:nth-child(2) td { color: #c8c8c8; }
#lb-table tbody tr:nth-child(3) td { color: #cd7f32; }

#lb-table tbody tr.current-entry td {
  color: var(--green);
  background: rgba(77, 255, 77, 0.07);
}

.lb-empty {
  color: var(--muted);
  font-size: 11px;
  padding: 16px !important;
}