:root {
  --bg: #000000;
  --panel: rgba(6, 14, 12, 0.78);
  --border: rgba(0, 255, 170, 0.35);
  --cyan: #00ffc8;
  --magenta: #ff2bd6;
  --green: #39ff14;
  --text: #d7fff2;
  --muted: #6f9f90;
  --danger: #ff4d6d;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Code", "SF Mono", "Consolas", ui-monospace, monospace;
}

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

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  overflow: hidden;
  user-select: none;
}

#app {
  position: relative;
  width: 100%;
  height: 100%;
}

#game {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
  touch-action: none;
}

.hud-top,
.hud-bottom,
.power-panel,
.message,
.overlay {
  pointer-events: none;
}

.hud-top {
  position: absolute;
  inset: 0 0 auto 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.logo {
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0, 255, 200, 0.55);
}

.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.stats {
  display: flex;
  gap: 1rem;
}

.stat {
  min-width: 7.5rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: 0 0 18px rgba(0, 255, 170, 0.08);
}

.stat .label {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.stat .value {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--green);
}

.power-panel {
  position: absolute;
  left: 50%;
  bottom: 5.25rem;
  transform: translateX(-50%);
  width: min(360px, calc(100% - 2rem));
  padding: 0.7rem 0.9rem 0.85rem;
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(6px);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.power-panel.visible {
  opacity: 1;
}

.power-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin-bottom: 0.4rem;
}

.power-track {
  height: 10px;
  border: 1px solid rgba(0, 255, 200, 0.25);
  background: rgba(0, 0, 0, 0.55);
  overflow: hidden;
}

.power-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan), var(--green), var(--magenta));
  box-shadow: 0 0 12px rgba(0, 255, 200, 0.55);
  transition: width 0.04s linear;
}

.power-panel .hint {
  margin: 0.45rem 0 0;
  font-size: 0.72rem;
  color: var(--muted);
  font-family: var(--mono);
}

.hud-bottom {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem 1rem;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.8), transparent);
}

.controls {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}

kbd {
  display: inline-block;
  padding: 0.1rem 0.35rem;
  border: 1px solid rgba(0, 255, 200, 0.3);
  background: rgba(0, 40, 30, 0.7);
  color: var(--cyan);
  font-size: 0.72rem;
}

.btn {
  pointer-events: auto;
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(0, 30, 24, 0.9);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s, color 0.15s;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--cyan);
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 255, 200, 0.25);
  outline: none;
}

.btn.primary {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.18);
}

.message {
  position: absolute;
  top: 5.5rem;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(520px, calc(100% - 2rem));
  padding: 0.65rem 1rem;
  border: 1px solid var(--border);
  background: var(--panel);
  font-family: var(--mono);
  font-size: 0.85rem;
  text-align: center;
  color: var(--cyan);
  box-shadow: 0 0 24px rgba(0, 255, 170, 0.12);
}

.message.danger {
  border-color: rgba(255, 77, 109, 0.55);
  color: var(--danger);
}

.message.success {
  border-color: rgba(57, 255, 20, 0.55);
  color: var(--green);
}

.message.hidden,
.overlay.hidden,
.hidden {
  display: none !important;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  background: radial-gradient(ellipse at center, rgba(0, 40, 28, 0.55), rgba(0, 0, 0, 0.92));
  pointer-events: auto;
  z-index: 10;
}

.overlay-card {
  width: min(520px, 100%);
  padding: 1.6rem 1.5rem 1.4rem;
  border: 1px solid var(--border);
  background: rgba(4, 12, 10, 0.94);
  box-shadow:
    0 0 0 1px rgba(0, 255, 170, 0.08),
    0 0 40px rgba(0, 255, 170, 0.12);
}

.overlay-card.win {
  border-color: rgba(57, 255, 20, 0.5);
}

.overlay-kicker {
  margin: 0 0 0.4rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--magenta);
}

.overlay-card h1 {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 4vw, 2rem);
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(0, 255, 200, 0.4);
}

.overlay-body {
  margin: 0 0 1rem;
  line-height: 1.5;
  color: var(--text);
  opacity: 0.92;
}

.overlay-list {
  margin: 0 0 1.25rem;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.55;
}

.overlay-list strong {
  color: var(--green);
}

.end-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0 0 1.25rem;
}

.end-stat {
  padding: 0.55rem 0.65rem;
  border: 1px solid rgba(57, 255, 20, 0.28);
  background: rgba(0, 20, 12, 0.65);
  box-shadow: 0 0 14px rgba(57, 255, 20, 0.08);
}

.end-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.end-value {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--green);
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.35);
}

@media (max-width: 640px) {
  .hud-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats {
    width: 100%;
  }

  .stat {
    flex: 1;
    min-width: 0;
  }

  .hud-bottom {
    flex-direction: column;
    align-items: stretch;
  }

  .controls {
    text-align: center;
  }
}