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

:root {
  --neon-green:  #39ff14;
  --neon-cyan:   #00f5ff;
  --neon-pink:   #ff2d78;
  --neon-gold:   #ffd700;
  --night:       #050d12;
  --road-dark:   #0a0a0f;
  --road-mid:    #111118;
  --panel:       rgba(0,0,0,0.7);
  --panel-border:rgba(57,255,20,0.25);
  --white:       #e8fff0;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--night);
  font-family: 'Exo 2', sans-serif;
  color: var(--white);
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
}

/* ── CANVAS ─────────────────────────────────────── */
#gameCanvas {
  display: block;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ── SCREENS ────────────────────────────────────── */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  z-index: 20;
  background: radial-gradient(ellipse at 50% 40%, #0a1f0a 0%, #050d12 70%);
}
.screen.hidden { display: none !important; }

/* Start screen */
.title-block { text-align: center; }
.title-frog  {
  font-size: 72px;
  animation: titleBounce 1.8s ease-in-out infinite;
  filter: drop-shadow(0 0 18px var(--neon-green));
}
@keyframes titleBounce {
  0%,100% { transform: translateY(0) rotate(-6deg) scale(1); }
  50%      { transform: translateY(-14px) rotate(6deg) scale(1.08); }
}

h1.title {
  font-family: 'Orbitron', monospace;
  font-size: 58px;
  font-weight: 900;
  letter-spacing: 4px;
  line-height: 1;
  color: var(--neon-green);
  text-shadow: 0 0 20px var(--neon-green), 0 0 50px rgba(57,255,20,0.4);
}
h1.title span {
  color: var(--neon-cyan);
  text-shadow: 0 0 20px var(--neon-cyan), 0 0 50px rgba(0,245,255,0.4);
  display: block;
}

.subtitle {
  font-size: 15px;
  font-weight: 700;
  color: rgba(255,255,255,0.45);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-top: 8px;
}

.controls-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 14px 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  backdrop-filter: blur(10px);
  text-align: center;
}
.ctrl-row {
  font-size: 14px;
  font-weight: 700;
  color: rgba(255,255,255,0.6);
  letter-spacing: 1px;
}
kbd {
  display: inline-block;
  background: rgba(57,255,20,0.12);
  border: 1px solid rgba(57,255,20,0.4);
  border-radius: 5px;
  padding: 2px 8px;
  font-family: 'Orbitron', monospace;
  font-size: 12px;
  color: var(--neon-green);
}

.btn-main {
  font-family: 'Orbitron', monospace;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 3px;
  background: transparent;
  color: var(--neon-green);
  border: 2px solid var(--neon-green);
  border-radius: 6px;
  padding: 14px 48px;
  cursor: pointer;
  box-shadow: 0 0 20px rgba(57,255,20,0.3), inset 0 0 20px rgba(57,255,20,0.05);
  transition: all 0.15s;
  text-transform: uppercase;
}

.btn-main:active {
  transform: scale(0.97);
}

.best-display {
  font-family: 'Orbitron', monospace;
  font-size: 14px;
  color: rgba(255,215,0,0.6);
  letter-spacing: 2px;
}

/* ── HUD ────────────────────────────────────────── */
.hud {
  position: fixed;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 12px 18px 10px;
  background: linear-gradient(to bottom, rgba(0,0,0,0.7), transparent);
  z-index: 15;
  pointer-events: none;
}
.hud.hidden { display: none !important; }

.hud-left, .hud-right { display: flex; flex-direction: column; }
.hud-right { align-items: flex-end; }
.hud-center { display: flex; flex-direction: column; align-items: center; gap: 4px; }

.hud-score {
  font-family: 'Orbitron', monospace;
  font-size: 32px;
  font-weight: 900;
  color: var(--neon-green);
  text-shadow: 0 0 10px rgba(57,255,20,0.6);
  line-height: 1;
}
.hud-label {
  font-family: 'Orbitron', monospace;
  font-size: 10px;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.35);
  margin-top: 2px;
}
.hud-lives { font-size: 22px; line-height: 1; }

/* Shield bar */
.shield-label {
  font-family: 'Orbitron', monospace;
  font-size: 11px;
  color: var(--neon-cyan);
  letter-spacing: 2px;
}
.shield-bg {
  width: 90px;
  height: 6px;
  background: rgba(0,245,255,0.15);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid rgba(0,245,255,0.3);
}
.shield-fill {
  height: 100%;
  width: 100%;
  background: var(--neon-cyan);
  box-shadow: 0 0 8px var(--neon-cyan);
  border-radius: 3px;
  transition: width 0.1s linear;
}

/* ── COMBO TOAST ────────────────────────────────── */
.combo-toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%) scale(0.6);
  font-family: 'Orbitron', monospace;
  font-size: 36px;
  font-weight: 900;
  color: var(--neon-gold);
  text-shadow: 0 0 20px var(--neon-gold);
  pointer-events: none;
  opacity: 0;
  z-index: 30;
  white-space: nowrap;
}
.combo-toast.pop {
  animation: comboPop 1s cubic-bezier(.36,1.56,.64,1) forwards;
}
@keyframes comboPop {
  0%   { opacity:0; transform: translate(-50%,-50%) scale(0.4); }
  25%  { opacity:1; transform: translate(-50%,-50%) scale(1.1); }
  70%  { opacity:1; transform: translate(-50%,-50%) scale(1); }
  100% { opacity:0; transform: translate(-50%,-60%) scale(0.9); }
}

/* ── GAME OVER ──────────────────────────────────── */
.over-title {
  font-family: 'Orbitron', monospace;
  font-size: 52px;
  font-weight: 900;
  color: var(--neon-pink);
  text-shadow: 0 0 30px rgba(255,45,120,0.7);
  letter-spacing: 4px;
}
.over-frog { font-size: 64px; animation: overWobble 0.6s ease; }
@keyframes overWobble {
  0%   { transform: rotate(0) scale(1); }
  30%  { transform: rotate(-20deg) scale(1.2); }
  60%  { transform: rotate(20deg) scale(1.1); }
  100% { transform: rotate(0) scale(1); }
}

.over-stats {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  padding: 18px 40px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  backdrop-filter: blur(10px);
  min-width: 220px;
}
.stat-row {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  font-size: 20px;
  font-weight: 700;
}
.stat-row span { color: rgba(255,255,255,0.5); }
.stat-row strong { font-family: 'Orbitron', monospace; font-size: 22px; color: var(--white); }
.gold { color: var(--neon-gold) !important; text-shadow: 0 0 10px rgba(255,215,0,0.5); }

.new-best {
  font-family: 'Orbitron', monospace;
  font-size: 16px;
  color: var(--neon-gold);
  text-align: center;
  text-shadow: 0 0 12px rgba(255,215,0,0.6);
  letter-spacing: 2px;
  animation: pulse 1s ease-in-out infinite;
}
.new-best.hidden { display: none; }
@keyframes pulse {
  0%,100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

/* ── HOME BUTTON ────────────────────────────────── */
.btn-home {
  font-family: 'Orbitron', monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  background: transparent;
  color: rgba(255,255,255,0.35);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  padding: 9px 28px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  text-transform: uppercase;
}


.btn-home:active { transform: scale(0.96); }

/* ── SCREEN SHAKE ───────────────────────────────── */
.shake {
  animation: screenShake 0.3s ease;
}
@keyframes screenShake {
  0%,100% { transform: translate(0,0); }
  20%  { transform: translate(-6px, 3px); }
  40%  { transform: translate(6px, -3px); }
  60%  { transform: translate(-4px, 4px); }
  80%  { transform: translate(4px, -2px); }
}