/* ===== Arkanoid mini-game ===== */

#stack-play-wrap {
  display: flex;
  justify-content: center;
  margin-top: 44px;
}

.stack__play-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 48px;
  background: transparent;
  border: 1.5px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2em;
  border-radius: 8px;
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.2s;
}

.stack__play-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s ease;
  z-index: 0;
}

.stack__play-btn:hover::before { transform: scaleX(1); }

.stack__play-btn > * {
  position: relative;
  z-index: 1;
  transition: color 0.22s;
}

.stack__play-btn:hover > * { color: #080d1a; }

.stack__play-btn:hover {
  box-shadow: 0 0 32px rgba(44, 212, 197, 0.35);
  transform: translateY(-2px);
}

/* ── Container ──────────────────────────────────────────────────────────── */
#arkanoid-container {
  display: none;
  flex-direction: column;
  align-items: center;
  margin-top: 32px;
  width: 100%;
}

#arkanoid-container.active { display: flex; }

/* ── Canvas ─────────────────────────────────────────────────────────────── */
#arkanoid-canvas {
  display: block;
  max-width: 100%;
  border: 1.5px solid var(--accent);
  border-radius: 12px;
  box-shadow:
    0 0 0 1px rgba(44, 212, 197, 0.1),
    0 0 48px rgba(44, 212, 197, 0.12),
    0 24px 64px rgba(0, 0, 0, 0.55);
  cursor: none;
}

/* ── Close button ───────────────────────────────────────────────────────── */
#btn-arkanoid-close {
  margin-top: 16px;
  padding: 8px 24px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

#btn-arkanoid-close:hover {
  color: var(--ink);
  border-color: var(--muted);
}

/* ── Hide grid while game is active ─────────────────────────────────────── */
.stack__grid.arkanoid-hidden { display: none; }