/* ===== Ümumi sıfırlama ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

:root {
  /* Neon rəng palitrası — bütün oyun bu rənglərlə işləyir */
  --neon-cyan: #00f0ff;
  --neon-pink: #ff2d95;
  --neon-green: #39ff14;
  --bg-dark: #05060a;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;                 /* scroll olmasın, tam ekran oyun */
  background: var(--bg-dark);
  font-family: "Segoe UI", system-ui, sans-serif;
  color: #fff;
  cursor: crosshair;                /* arcade hissi üçün nişangah kursoru */
}

/* ===== Canvas — bütün ekranı tutur ===== */
#game {
  display: block;
  position: fixed;
  inset: 0;
  /* Fonda incə radial parıltı, qaranlıq atmosfer üçün */
  background:
    radial-gradient(circle at 50% 40%, #0c1020 0%, #05060a 70%);
}

/* ===== HUD (yuxarı məlumat paneli) ===== */
#hud {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 40px;
  pointer-events: none;             /* HUD mouse hadisələrini tutmasın */
  z-index: 5;
  user-select: none;
}

.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 70px;
}

.hud-label {
  font-size: 11px;
  letter-spacing: 3px;
  opacity: 0.6;
}

.hud-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--neon-cyan);
  text-shadow: 0 0 10px var(--neon-cyan);  /* neon işıq effekti */
}

/* ===== Overlay pəncərələr (start + game over) ===== */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 4, 8, 0.78);
  backdrop-filter: blur(4px);
  z-index: 10;
  animation: fadeIn 0.25s ease;
}

.overlay.hidden {
  display: none;                    /* gizlədilmiş overlay görünməsin */
}

.panel {
  text-align: center;
  padding: 40px 50px;
  border: 1px solid rgba(0, 240, 255, 0.35);
  border-radius: 16px;
  background: rgba(10, 14, 26, 0.85);
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.25);
  max-width: 90vw;
}

.title {
  font-size: clamp(32px, 7vw, 56px);
  letter-spacing: 6px;
  color: var(--neon-cyan);
  text-shadow: 0 0 18px var(--neon-cyan), 0 0 40px var(--neon-cyan);
  margin-bottom: 16px;
}

.title.danger {
  color: var(--neon-pink);
  text-shadow: 0 0 18px var(--neon-pink), 0 0 40px var(--neon-pink);
}

.subtitle {
  font-size: 15px;
  opacity: 0.8;
  margin-bottom: 22px;
  max-width: 420px;
}

.controls {
  list-style: none;
  text-align: left;
  display: inline-block;
  margin-bottom: 28px;
  font-size: 14px;
  line-height: 1.9;
  opacity: 0.85;
}

.controls b {
  color: var(--neon-green);
  text-shadow: 0 0 8px var(--neon-green);
}

.result {
  font-size: 20px;
  margin-bottom: 8px;
}

.result.small {
  font-size: 14px;
  opacity: 0.7;
  margin-bottom: 24px;
}

.result span {
  color: var(--neon-green);
  font-weight: 700;
  text-shadow: 0 0 10px var(--neon-green);
}

/* ===== Düymə ===== */
.btn {
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--bg-dark);
  background: var(--neon-cyan);
  border: none;
  border-radius: 8px;
  padding: 14px 38px;
  cursor: pointer;
  box-shadow: 0 0 20px var(--neon-cyan);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.btn:hover {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 0 32px var(--neon-cyan);
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}