/* Memory Match — shares arcade.css theme. */
.mm-body { min-height: 100svh; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: max(10px, env(safe-area-inset-top)) 14px 0; max-width: 620px; margin: 0 auto; }
.icon-btn { cursor: pointer; font: inherit; font-size: 1.3rem; line-height: 1; width: 44px; height: 44px; flex: none;
  display: inline-flex; align-items: center; justify-content: center; color: var(--ink); background: rgba(32,16,64,0.55);
  border: 1.5px solid var(--panel-brd); border-radius: 50%; text-decoration: none; }
.icon-btn:hover { background: rgba(168,85,247,0.3); } .ghost-btn { pointer-events: none; }
.mm-title { font-size: 1.5rem; font-weight: 900; margin: 0; letter-spacing: -1px; }
.mm-title span { background: linear-gradient(120deg, var(--neon), var(--magenta)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.mm-wrap { max-width: 620px; margin: 0 auto; padding: 14px; }
.diffbar { display: flex; gap: 8px; justify-content: center; margin-bottom: 12px; }
.diff { font: inherit; font-weight: 700; font-size: .85rem; color: var(--ink-dim); cursor: pointer;
  background: rgba(168,85,247,0.1); border: 1.5px solid var(--panel-brd); border-radius: 999px; padding: .5em 1.1em; }
.diff.on { color: #fff; background: linear-gradient(135deg, var(--violet), var(--magenta)); border-color: transparent; }

.mm-hud { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 14px;
  color: var(--ink-dim); font-weight: 700; }
.mm-hud b { color: var(--ink); font-variant-numeric: tabular-nums; }
.btn.small { font-size: .85rem; padding: .5em 1em; }

.board { display: grid; gap: clamp(6px, 2vw, 12px); margin: 0 auto; max-width: 480px; }
.card { display: block; width: 100%; aspect-ratio: 1/1; border: 0; background: none; padding: 0; margin: 0; cursor: pointer;
  position: relative; touch-action: manipulation; -webkit-appearance: none; appearance: none; font: inherit; }
.card .inner { display: block; position: relative; width: 100%; height: 100%; }
.face { position: absolute; top: 0; right: 0; bottom: 0; left: 0; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  font-size: clamp(1.4rem, 7vw, 2.4rem); line-height: 1; }
.back { background: linear-gradient(135deg, #8b5cf6, #d946ef); border: 1.5px solid rgba(240,171,252,0.5);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), 0 6px 16px rgba(124,58,237,0.5); }
.back::after { content: "\2726"; color: rgba(255,255,255,0.9); font-size: 1.8rem; text-shadow: 0 0 10px rgba(255,255,255,0.6); }
.front { background: rgba(255,255,255,0.95); box-shadow: 0 6px 16px rgba(0,0,0,0.3); display: none; }
.card.flip .back, .card.matched .back { display: none; }
.card.flip .front, .card.matched .front { display: flex; animation: flipin .22s ease; }
@keyframes flipin { from { transform: scaleX(0.1); } to { transform: scaleX(1); } }
.card.matched .front { background: #ede9ff; box-shadow: 0 0 0 2px var(--magenta), 0 0 18px rgba(217,70,239,0.5); }
.card.matched { animation: pop .3s ease; }
@keyframes pop { 50% { transform: scale(1.08); } }

.overlay { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; padding: 20px;
  background: rgba(8,3,18,0.6); backdrop-filter: blur(4px); }
.overlay.hidden { display: none; }
.panel.over-card { width: 100%; max-width: 360px; padding: 26px 24px; text-align: center; }
.over-card h2 { font-size: 1.6rem; }
.win-stats { color: var(--ink-dim); margin: 6px 0 16px; } .win-stats b { color: var(--neon); }
.submit-row .btn { width: 100%; margin-top: 4px; }
.nick-row { display: flex; gap: 8px; } .nick-row .field { flex: 1; } .nick-row .icon-btn { flex: none; border-radius: 12px; }
.nick-hint { color: var(--ink-mut); font-size: .78rem; margin: 6px 0 14px; text-align: left; } .nick-hint.bad { color: var(--pink); }
.submit-done { color: #7cf29a; font-weight: 800; margin: 10px 0; }
.over-btns { display: flex; gap: 10px; justify-content: center; margin-top: 16px; }
.toast { position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom) + 20px); transform: translateX(-50%);
  background: rgba(32,16,64,0.92); border: 1px solid var(--panel-brd); color: var(--ink); padding: .6em 1.1em;
  border-radius: 999px; font-weight: 700; font-size: .85rem; z-index: 60; } .hidden { display: none !important; }