/* ═══════════════════════════════════════════
   CYBERDINU — Cyberpunk Snake
   style.css
═══════════════════════════════════════════ */

:root {
  --bg:        #020812;
  --grid-c:    #0a1628;
  --cyan:      #00ffe7;
  --magenta:   #ff00aa;
  --yellow:    #ffea00;
  --green:     #39ff14;
  --orange:    #ff6b00;
  --dim:       #1a2a3a;
  --text:      #c8e8ff;
  --text-dim:  #4a6a8a;
  --glow-c:    0 0 8px #00ffe7, 0 0 24px #00ffe780;
  --glow-m:    0 0 8px #ff00aa, 0 0 24px #ff00aa80;
  --glow-y:    0 0 8px #ffea00, 0 0 24px #ffea0080;
  --glow-g:    0 0 8px #39ff14, 0 0 24px #39ff1480;
  --font-hud:  'Orbitron', monospace;
  --font-mono: 'Share Tech Mono', monospace;
}

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

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  overflow: hidden;
  user-select: none;
}

/* ── Grid bg ── */
.grid-bg {
  position: fixed; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(0,255,231,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,255,231,0.035) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

/* ── Scanlines ── */
.scanlines {
  position: fixed; inset: 0; z-index: 100;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0,0,0,0.18) 2px,
    rgba(0,0,0,0.18) 4px
  );
  pointer-events: none;
}

/* ── Particles ── */
#particles {
  position: fixed; inset: 0; z-index: 1;
  pointer-events: none;
}
.particle {
  position: absolute;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: var(--cyan);
  animation: float-up linear infinite;
  opacity: 0;
}
@keyframes float-up {
  0%   { opacity: 0; transform: translateY(0) scale(1); }
  10%  { opacity: 0.8; }
  90%  { opacity: 0.3; }
  100% { opacity: 0; transform: translateY(-100vh) scale(0.5); }
}

/* ══════════ SCREENS ══════════ */
.screen {
  position: fixed; inset: 0; z-index: 10;
  display: none;
  align-items: center; justify-content: center;
  flex-direction: column;
}
.screen.active { display: flex; }

.screen-inner {
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  max-width: 520px; width: 94%;
  max-height: 96vh;
  overflow-y: auto;
  padding: 32px 24px;
  background: rgba(2,8,18,0.92);
  border: 1px solid var(--cyan);
  box-shadow: var(--glow-c), inset 0 0 60px rgba(0,255,231,0.03);
  border-radius: 4px;
}

/* ── LOGO ── */
.logo-wrap { text-align: center; margin-bottom: 4px; }

.logo-glitch {
  font-family: var(--font-hud);
  font-size: clamp(28px, 7vw, 48px);
  font-weight: 900;
  color: var(--cyan);
  text-shadow: var(--glow-c);
  letter-spacing: 4px;
  position: relative;
  animation: glitch 4s infinite;
}
.logo-glitch::before,
.logo-glitch::after {
  content: attr(data-text);
  position: absolute; left: 0; top: 0;
  width: 100%;
}
.logo-glitch::before {
  color: var(--magenta);
  animation: glitch-1 4s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 35%, 0 35%);
}
.logo-glitch::after {
  color: var(--cyan);
  animation: glitch-2 4s infinite;
  clip-path: polygon(0 65%, 100% 65%, 100% 100%, 0 100%);
}
@keyframes glitch {
  0%,94%,100% { transform: none; }
  95% { transform: skewX(-3deg); }
  97% { transform: skewX(3deg); }
}
@keyframes glitch-1 {
  0%,94%,100% { transform: none; opacity: 0; }
  95% { transform: translate(-3px, 1px); opacity: 0.8; }
  97% { transform: translate(3px,-1px); opacity: 0.6; }
}
@keyframes glitch-2 {
  0%,94%,100% { transform: none; opacity: 0; }
  96% { transform: translate(3px, 2px); opacity: 0.7; }
  98% { transform: translate(-3px,-2px); opacity: 0.5; }
}

.logo-sub {
  font-family: var(--font-hud);
  font-size: 11px;
  letter-spacing: 8px;
  color: var(--magenta);
  text-shadow: var(--glow-m);
  margin-top: 6px;
}

/* ── Menu stats ── */
.menu-stats { display: flex; gap: 20px; }
.stat-pill {
  background: rgba(0,255,231,0.06);
  border: 1px solid rgba(0,255,231,0.2);
  padding: 5px 16px;
  border-radius: 2px;
  font-size: 13px;
  color: var(--text-dim);
}
.stat-pill span { color: var(--cyan); font-weight: bold; }

/* ── Legends ── */
.food-legend, .powerup-legend {
  width: 100%;
  background: rgba(0,255,231,0.03);
  border: 1px solid rgba(0,255,231,0.1);
  border-radius: 4px;
  padding: 12px 16px;
}
.legend-title {
  font-family: var(--font-hud);
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.legend-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.legend-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--text);
}
.legend-item b { color: var(--yellow); }

.dot {
  width: 12px; height: 12px; border-radius: 50%;
  flex-shrink: 0; display: inline-block;
}
.dot-normal  { background: var(--cyan);    box-shadow: 0 0 6px var(--cyan); }
.dot-bonus   { background: var(--yellow);  box-shadow: 0 0 6px var(--yellow); }
.dot-rare    { background: var(--magenta); box-shadow: 0 0 6px var(--magenta); }
.dot-mega    { background: var(--green);   box-shadow: 0 0 10px var(--green); animation: pulse-g 1s infinite; }

@keyframes pulse-g {
  0%,100% { box-shadow: 0 0 6px var(--green); }
  50%      { box-shadow: 0 0 18px var(--green), 0 0 30px var(--green); }
}

.pu-icon {
  width: 22px; height: 22px; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; flex-shrink: 0;
}
.pu-speed  { background: rgba(255,234,0,0.15); border: 1px solid var(--yellow); }
.pu-slow   { background: rgba(0,255,231,0.1);  border: 1px solid var(--cyan); }
.pu-shield { background: rgba(57,255,20,0.1);  border: 1px solid var(--green); }
.pu-score  { background: rgba(255,0,170,0.1);  border: 1px solid var(--magenta); }

/* ── Buttons ── */
.btn-start {
  font-family: var(--font-hud);
  font-size: 14px; letter-spacing: 3px;
  color: var(--bg); background: var(--cyan);
  border: none; border-radius: 2px;
  padding: 14px 40px; cursor: pointer;
  width: 100%; max-width: 320px;
  transition: all 0.2s;
  box-shadow: var(--glow-c);
}
.btn-start:hover {
  background: #fff;
  box-shadow: 0 0 20px #fff, 0 0 40px var(--cyan);
  transform: scale(1.02);
}

.btn-secondary {
  font-family: var(--font-hud);
  font-size: 12px; letter-spacing: 2px;
  color: var(--cyan); background: transparent;
  border: 1px solid rgba(0,255,231,0.3);
  border-radius: 2px; padding: 10px 30px;
  cursor: pointer; width: 100%; max-width: 320px;
  transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--cyan); background: rgba(0,255,231,0.07); }

.btn-danger {
  font-family: var(--font-hud);
  font-size: 11px; letter-spacing: 2px;
  color: var(--magenta); background: transparent;
  border: 1px solid rgba(255,0,170,0.3);
  border-radius: 2px; padding: 8px 20px;
  cursor: pointer; width: 100%; max-width: 320px;
  transition: all 0.2s;
}
.btn-danger:hover { border-color: var(--magenta); background: rgba(255,0,170,0.07); }

.controls-hint {
  font-size: 11px; color: var(--text-dim);
  letter-spacing: 1px;
}

/* ══════════ HUD ══════════ */
.hud {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: flex-end; justify-content: space-between;
  padding: 12px 20px 8px;
  background: linear-gradient(to bottom, rgba(2,8,18,0.95), transparent);
  pointer-events: none;
}
.hud-block { min-width: 80px; }
.hud-right { text-align: right; }
.hud-center { text-align: center; flex: 1; }
.hud-label {
  font-family: var(--font-hud); font-size: 9px;
  letter-spacing: 3px; color: var(--text-dim);
}
.hud-value {
  font-family: var(--font-hud); font-size: 22px;
  font-weight: 700; color: var(--cyan);
  text-shadow: var(--glow-c); line-height: 1.1;
}
.hud-level { font-size: 18px; color: var(--magenta); text-shadow: var(--glow-m); }

.level-bar-wrap {
  width: 120px; height: 3px; margin: 4px auto 0;
  background: rgba(255,0,170,0.15); border-radius: 2px;
}
.level-bar {
  height: 100%; border-radius: 2px;
  background: var(--magenta);
  box-shadow: 0 0 6px var(--magenta);
  width: 0%; transition: width 0.4s ease;
}

/* ── Power-up bar ── */
.pu-bar {
  position: fixed; top: 68px; left: 50%; transform: translateX(-50%);
  z-index: 20; display: flex; align-items: center; gap: 10px;
  background: rgba(2,8,18,0.88);
  border: 1px solid rgba(255,234,0,0.4);
  padding: 6px 16px; border-radius: 2px;
  font-size: 12px; font-family: var(--font-hud);
  white-space: nowrap;
}
#pu-icon-active { font-size: 16px; }
#pu-name-active { color: var(--yellow); letter-spacing: 2px; font-size: 11px; }
.pu-timer-track {
  width: 80px; height: 3px;
  background: rgba(255,234,0,0.15); border-radius: 2px;
}
.pu-timer-fill {
  height: 100%; border-radius: 2px;
  background: var(--yellow); box-shadow: 0 0 6px var(--yellow);
  width: 100%; transition: width 0.1s linear;
}

/* ── Canvas ── */
.canvas-wrap {
  position: fixed; inset: 0; z-index: 11;
  display: flex; align-items: center; justify-content: center;
  top: 90px; bottom: 52px;
}
#gameCanvas {
  display: block;
  image-rendering: pixelated;
  border: 1px solid rgba(0,255,231,0.2);
  box-shadow: var(--glow-c), 0 0 60px rgba(0,255,231,0.06);
}

#pause-overlay {
  position: absolute; inset: 0;
  background: rgba(2,8,18,0.85);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 10px;
}
.pause-text {
  font-family: var(--font-hud); font-size: 36px; font-weight: 900;
  color: var(--cyan); text-shadow: var(--glow-c);
  letter-spacing: 8px;
  animation: blink 1s step-end infinite;
}
.pause-sub { font-size: 13px; color: var(--text-dim); letter-spacing: 2px; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }

/* ── Bottom HUD ── */
.bottom-hud {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 20px 8px;
  background: linear-gradient(to top, rgba(2,8,18,0.95), transparent);
  pointer-events: none;
}
.lives-row { display: flex; gap: 6px; }
.life-icon { font-size: 16px; filter: drop-shadow(0 0 4px var(--green)); }
.btn-pause {
  pointer-events: all;
  background: transparent; border: 1px solid rgba(0,255,231,0.2);
  color: var(--text-dim); font-size: 16px;
  width: 32px; height: 32px; border-radius: 2px; cursor: pointer;
  transition: all 0.2s;
}
.btn-pause:hover { border-color: var(--cyan); color: var(--cyan); }

/* ══════════ LEVEL UP OVERLAY ══════════ */
.screen-overlay {
  position: fixed; inset: 0; z-index: 50;
  display: flex; align-items: center; justify-content: center;
  background: rgba(2,8,18,0.7);
}
.levelup-box {
  text-align: center; padding: 32px 48px;
  border: 1px solid var(--magenta);
  background: rgba(2,8,18,0.95);
  box-shadow: var(--glow-m);
  border-radius: 4px;
  animation: pop-in 0.35s cubic-bezier(.34,1.56,.64,1);
}
@keyframes pop-in {
  from { transform: scale(0.7); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.levelup-label {
  font-family: var(--font-hud); font-size: 11px;
  letter-spacing: 6px; color: var(--text-dim); margin-bottom: 8px;
}
.levelup-num {
  font-family: var(--font-hud); font-size: 64px; font-weight: 900;
  color: var(--magenta); text-shadow: var(--glow-m); line-height: 1;
}
.levelup-desc {
  font-size: 14px; color: var(--cyan); margin: 8px 0 16px;
  text-shadow: var(--glow-c);
}
.levelup-bar {
  height: 3px; background: rgba(255,0,170,0.15); border-radius: 2px;
}
.levelup-fill {
  height: 100%; width: 0%;
  background: var(--magenta); box-shadow: 0 0 8px var(--magenta);
  border-radius: 2px; transition: width 1.8s linear;
}

/* ══════════ GAME OVER ══════════ */
.go-title {
  font-family: var(--font-hud); font-size: clamp(28px, 8vw, 44px);
  font-weight: 900; color: var(--magenta);
  text-shadow: var(--glow-m); letter-spacing: 4px;
  animation: glitch 2s infinite;
}
.go-sub {
  font-size: 11px; letter-spacing: 4px; color: var(--text-dim);
}
.go-stats {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; width: 100%;
}
.go-stat {
  background: rgba(0,255,231,0.04);
  border: 1px solid rgba(0,255,231,0.12);
  padding: 10px 16px; border-radius: 2px; text-align: center;
}
.go-stat-label {
  font-family: var(--font-hud); font-size: 9px;
  letter-spacing: 3px; color: var(--text-dim); margin-bottom: 4px;
}
.go-stat-val {
  font-family: var(--font-hud); font-size: 24px;
  font-weight: 700; color: var(--cyan); text-shadow: var(--glow-c);
}

.new-record {
  font-family: var(--font-hud); font-size: 14px;
  color: var(--yellow); text-shadow: var(--glow-y);
  letter-spacing: 3px; animation: pulse-y 0.8s infinite;
}
@keyframes pulse-y {
  0%,100% { opacity: 1; } 50% { opacity: 0.4; }
}

.name-entry { width: 100%; text-align: center; }
.name-label {
  font-family: var(--font-hud); font-size: 10px;
  letter-spacing: 3px; color: var(--text-dim); margin-bottom: 8px;
}
#player-name {
  font-family: var(--font-hud); font-size: 18px; font-weight: 700;
  background: transparent; border: none;
  border-bottom: 2px solid var(--cyan);
  color: var(--cyan); text-align: center;
  width: 200px; padding: 6px 0; outline: none;
  letter-spacing: 3px;
  text-shadow: var(--glow-c);
  text-transform: uppercase;
}
#player-name::placeholder { color: var(--text-dim); }

/* ══════════ LEADERBOARD ══════════ */
.lb-title {
  font-family: var(--font-hud); font-size: 32px; font-weight: 900;
  color: var(--cyan); text-shadow: var(--glow-c); letter-spacing: 4px;
}
.lb-subtitle {
  font-size: 10px; letter-spacing: 5px; color: var(--text-dim);
  margin-bottom: 4px;
}
.lb-table { width: 100%; }
.lb-row {
  display: grid; grid-template-columns: 36px 1fr auto auto;
  align-items: center; gap: 12px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(0,255,231,0.07);
  transition: background 0.15s;
}
.lb-row:hover { background: rgba(0,255,231,0.04); }
.lb-row.lb-me { border-left: 2px solid var(--cyan); background: rgba(0,255,231,0.05); }
.lb-rank {
  font-family: var(--font-hud); font-size: 13px;
  color: var(--text-dim); text-align: center;
}
.lb-rank.gold   { color: #ffd700; text-shadow: 0 0 8px #ffd700; }
.lb-rank.silver { color: #c0c0c0; }
.lb-rank.bronze { color: #cd7f32; }
.lb-name { font-size: 14px; color: var(--text); letter-spacing: 1px; }
.lb-score {
  font-family: var(--font-hud); font-size: 16px;
  color: var(--cyan); text-shadow: var(--glow-c);
}
.lb-level {
  font-size: 11px; color: var(--magenta);
  font-family: var(--font-hud);
}
.lb-empty {
  text-align: center; padding: 32px;
  color: var(--text-dim); font-size: 13px; letter-spacing: 2px;
}

/* ══════════ SCORE POP ══════════ */
.score-pop {
  position: fixed; z-index: 60;
  font-family: var(--font-hud); font-weight: 700; font-size: 16px;
  pointer-events: none;
  animation: score-fly 1s ease-out forwards;
  text-shadow: 0 0 10px currentColor;
}
@keyframes score-fly {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(-60px) scale(1.4); }
}