:root {
  --gm-bg-1: #0b1020;
  --gm-bg-2: #131a33;
  --gm-accent: #ffd166;
  --gm-accent-2: #06d6a0;
  --gm-danger: #ef476f;
  --gm-text: #e9edf5;
}

* {
  -webkit-tap-highlight-color: transparent;
}

body.gm-game {
  margin: 0;
  min-height: 100vh;
  color: var(--gm-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(circle at 20% 0%, #1b2450 0%, transparent 55%),
              radial-gradient(circle at 90% 100%, #123c37 0%, transparent 50%),
              linear-gradient(160deg, var(--gm-bg-1), var(--gm-bg-2));
  overflow: hidden;
}

.gm-home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.gm-home__card {
  width: 100%;
  max-width: 420px;
  padding: 2rem;
  text-align: center;
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
}

.gm-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: clamp(2rem, 8vw, 2.75rem);
  font-weight: 800;
  letter-spacing: 0.02em;
  margin-bottom: 0.5rem;
  color: #fff;
  text-shadow: 0 4px 20px rgba(255, 209, 102, 0.35);
}

.gm-tagline {
  color: rgba(233, 237, 245, 0.75);
  margin-bottom: 1.75rem;
}

.gm-best {
  margin-top: 1.25rem;
  color: rgba(233, 237, 245, 0.6);
  font-size: 0.95rem;
}

.btn-gm {
  --bs-btn-bg: var(--gm-accent);
  --bs-btn-border-color: var(--gm-accent);
  --bs-btn-hover-bg: #ffdb85;
  --bs-btn-hover-border-color: #ffdb85;
  --bs-btn-active-bg: #e6bc5c;
  --bs-btn-active-border-color: #e6bc5c;
  --bs-btn-color: #1b1b1b;
  --bs-btn-hover-color: #1b1b1b;
  --bs-btn-active-color: #1b1b1b;
  font-weight: 700;
}

.gm-stage {
  position: fixed;
  inset: 0;
  overflow: hidden;
}

.gm-field {
  position: absolute;
  inset: 0;
  cursor: crosshair;
}

.gm-hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  pointer-events: none;
}

.gm-hud__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.4rem 0.6rem;
  border-radius: 0.75rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.gm-hud__label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(233, 237, 245, 0.6);
}

.gm-hud__value {
  font-size: 1.35rem;
  font-weight: 800;
}

.gm-exit {
  position: absolute;
  top: 4.9rem;
  right: 1rem;
  z-index: 6;
}

.gm-sprite {
  position: absolute;
  width: 72px;
  height: 72px;
  user-select: none;
  pointer-events: auto;
  transition: transform 0.08s ease;
  animation: gm-pop 0.18s ease-out both;
  filter: drop-shadow(0 6px 10px rgba(0, 0, 0, 0.4));
}

.gm-sprite:active {
  transform: scale(0.85);
}

.gm-sprite--alien {
  width: 66px;
  height: 66px;
}

@keyframes gm-pop {
  from { transform: scale(0.2); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.gm-float {
  position: absolute;
  z-index: 7;
  font-weight: 800;
  font-size: 1.1rem;
  pointer-events: none;
  animation: gm-float 0.7s ease-out forwards;
}

.gm-float--plus { color: var(--gm-accent-2); }
.gm-float--minus { color: var(--gm-danger); }

@keyframes gm-float {
  from { transform: translateY(0); opacity: 1; }
  to   { transform: translateY(-46px); opacity: 0; }
}

.gm-shake {
  animation: gm-shake 0.3s ease-in-out;
}

@keyframes gm-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

.gm-flash {
  position: fixed;
  inset: 0;
  z-index: 4;
  background: rgba(239, 71, 111, 0.28);
  pointer-events: none;
  animation: gm-flash 0.25s ease-out forwards;
}

@keyframes gm-flash {
  from { opacity: 1; }
  to   { opacity: 0; }
}

.gm-over {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(3, 6, 18, 0.78);
  backdrop-filter: blur(4px);
}

.gm-over__card {
  width: 100%;
  max-width: 360px;
  padding: 1.75rem;
  text-align: center;
  border-radius: 1.1rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.gm-over__score { font-size: 1.3rem; margin: 0.75rem 0 0.25rem; }
.gm-over__best { color: rgba(233, 237, 245, 0.7); margin-bottom: 1.25rem; }

.gm-modal {
  background: #171d33;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--gm-text);
}