/* =========================================================
   MEMORY GAME SCREEN  (#screen-memory)
   Scoped to prevent leaking into the main app.
   ========================================================= */

/* ─── Screen backdrop ─────────────────────────────────── */
#screen-memory {
  background: var(--bg, #FFF5FB);
  color: var(--text, #3D2B56);
  font-family: 'Nunito', sans-serif;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  overflow-y: auto;
  padding: 0 0 28px;
  gap: 0;
  align-items: center;
}

/* Full-viewport confetti canvas */
#mem-confetti {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9000;
}

/* Sparkle particles emitted by JS */
.mem-sparkle {
  position: fixed;
  pointer-events: none;
  z-index: 9500;
  font-size: 18px;
  animation: mem-sparkle-fly .9s ease-out forwards;
}
@keyframes mem-sparkle-fly {
  0%   { transform: translate(0,0) scale(0) rotate(0deg); opacity:1; }
  100% { transform: translate(var(--mdx),var(--mdy)) scale(1.6) rotate(var(--mdr)); opacity:0; }
}

/* ─── Game container — styled card board like Level 3 ─── */
#mem-game {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: calc(100% - 24px);
  max-width: 520px;
  gap: 12px;
  padding: 16px 20px 20px;
  margin: 8px 12px 0;
  background: var(--card, #fff);
  border-radius: 24px;
  border: 2px solid var(--border, #E8D5F5);
  box-shadow: 0 4px 24px rgba(0,0,0,.08);
}

/* ─── App-chrome: inherit theme vars (no overrides needed) ─ */
#screen-memory .app-chrome {
  align-self: stretch;
  width: 100%;
}

/* ─── Instruction bar ──────────────────────────────────── */
#screen-memory .game-instruction-bar {
  background: var(--soft, #F8E8F8);
  border-bottom: 1.5px solid var(--border, #E8D5F5);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 800;
  text-align: center;
  color: var(--text, #3D2B56);
  align-self: stretch;
  width: 100%;
  margin-bottom: 10px;
}

/* ─── Progress dots ───────────────────────────────────── */
#mem-dots {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
}
.mem-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--border, #E8D5F5);
  border: 1.5px solid var(--border, #E8D5F5);
  transition: all .3s;
}
.mem-dot.active {
  background: var(--primary, #FF6B9D);
  border-color: var(--primary, #FF6B9D);
  transform: scale(1.5);
  box-shadow: 0 0 8px var(--primary, #FF6B9D);
}
.mem-dot.done { background: var(--soft, #F8E8F8); border-color: var(--border, #E8D5F5); }

/* ─── Caption bar ─────────────────────────────────────── */
#mem-caption {
  background: var(--card, #fff);
  border: 1.5px solid var(--border, #E8D5F5);
  border-radius: 16px;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 800;
  text-align: center;
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .25s;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
  color: var(--text, #3D2B56);
}
#mem-caption.mem-fade { opacity: 0; }

/* ─── Card area ───────────────────────────────────────── */
#mem-card-area {
  position: relative;
}
#mem-card-grid {
  display: grid;
  grid-template-columns: repeat(2, var(--mcw, 148px));
  grid-template-rows:    repeat(2, var(--mch, 198px));
  gap: var(--mcg, 18px);
}

/* ─── Card: 3D flip ───────────────────────────────────── */
.mem-card {
  width:  var(--mcw, 148px);
  height: var(--mch, 198px);
  perspective: 900px;
  cursor: default;
  position: relative;
}
.mem-card.mem-interactive { cursor: pointer; }
.mem-card.mem-interactive:hover .mem-card-inner { filter: brightness(1.12); }

/* Flip container */
.mem-card-inner {
  width: 100%; height: 100%;
  position: relative;
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: transform .55s cubic-bezier(.3,1.4,.4,1);
  border-radius: 20px;
  will-change: transform;
}

/* Flipped = face-up (content visible) */
.mem-card.mem-flipped .mem-card-inner {
  transform: rotateY(180deg);
}

/* Both faces */
.mem-card-face {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* ─── Card BACK (colored design, shown initially) ──────── */
.mem-card-back {
  position: relative;
}
#mcard-red    .mem-card-back { background: linear-gradient(145deg,#FF6B6B,#C0392B); box-shadow:0 8px 28px rgba(192,57,43,.5); }
#mcard-blue   .mem-card-back { background: linear-gradient(145deg,#74B9FF,#0984E3); box-shadow:0 8px 28px rgba(9,132,227,.5); }
#mcard-green  .mem-card-back { background: linear-gradient(145deg,#55EFC4,#00B894); box-shadow:0 8px 28px rgba(0,184,148,.5); }
#mcard-yellow .mem-card-back { background: linear-gradient(145deg,#FFEAA7,#FDCB6E); box-shadow:0 8px 28px rgba(253,203,110,.5); }

.mem-back-icon {
  font-size: 44px;
  opacity: .28;
  pointer-events: none;
  animation: mem-back-drift 4s ease-in-out infinite;
}
@keyframes mem-back-drift {
  0%,100% { transform: translateY(0) rotate(0deg); }
  50%      { transform: translateY(-5px) rotate(6deg); }
}
.mem-back-label {
  position: absolute;
  bottom: 13px;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .8px;
  text-transform: uppercase;
  color: rgba(255,255,255,.9);
  text-shadow: 0 1px 4px rgba(0,0,0,.4);
}
#mcard-yellow .mem-back-label { color: rgba(80,50,0,.8); text-shadow: none; }

/* ─── Card FRONT (content, revealed on flip) ──────────── */
.mem-card-front {
  background: var(--card, #fff);
  transform: rotateY(180deg);   /* pre-rotated: hidden until card flips */
  border: 3px solid var(--border, #E8D5F5);
  box-shadow: 0 8px 28px rgba(0,0,0,.12);
  gap: 6px;
}
.mem-card-emoji { font-size: 68px; line-height: 1; }
.mem-card-label { font-size: 13px; font-weight: 900; color: var(--text, #3D2B56); }

/* ─── Animations ──────────────────────────────────────── */

/* Idle float (scene 1) */
.mem-card.mem-idle .mem-card-inner {
  animation: mem-idle-float var(--midur,2.6s) ease-in-out infinite var(--midel,0s);
}
@keyframes mem-idle-float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-9px) rotate(1.4deg); }
}

/* Wiggle prompt */
.mem-card.mem-wiggle .mem-card-inner {
  animation: mem-wiggle .55s ease-in-out 1;
}
@keyframes mem-wiggle {
  0%,100% { transform: rotateZ(0); }
  15%     { transform: rotateZ(-5deg) scale(1.04); }
  30%     { transform: rotateZ(5deg)  scale(1.04); }
  45%     { transform: rotateZ(-3.5deg); }
  60%     { transform: rotateZ(3.5deg); }
  75%     { transform: rotateZ(-2deg); }
}

/* ── Correct: glow the whole card wrapper (not card-inner,
       so the rotateY transform chain is never interrupted) ── */
.mem-card.mem-correct {
  animation: mem-correct-wrapper .6s ease-in-out 3;
}
@keyframes mem-correct-wrapper {
  0%,100% { filter: drop-shadow(0 0 0px rgba(76,175,80,0)); }
  50%      { filter: drop-shadow(0 0 14px rgba(76,175,80,.85)); }
}

/* Wrong: shake — includes rotateY(180deg) since card is face-up */
.mem-card.mem-wrong .mem-card-inner {
  animation: mem-wrong-shake .45s ease-in-out 1;
}
@keyframes mem-wrong-shake {
  0%,100% { transform: translateX(0) rotateY(180deg); }
  20%     { transform: translateX(-10px) rotateY(180deg); }
  40%     { transform: translateX(10px)  rotateY(180deg); }
  60%     { transform: translateX(-7px)  rotateY(180deg); }
  80%     { transform: translateX(7px)   rotateY(180deg); }
}

/* ─── Overlay layer (thinking / question icons) ───────── */
#mem-overlay-layer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 5;
}
#mem-thinking {
  display: none;
  font-size: 70px;
  animation: mem-think-pulse 1.1s ease-in-out infinite;
  filter: drop-shadow(0 4px 18px rgba(255,200,0,.6));
}
#mem-thinking.show { display: block; }
@keyframes mem-think-pulse {
  0%,100% { transform: scale(1) translateY(0); }
  50%      { transform: scale(1.15) translateY(-6px); }
}
#mem-question {
  display: none;
  font-size: 86px;
  animation: mem-q-float 1.4s ease-in-out infinite;
  filter: drop-shadow(0 4px 22px rgba(255,200,0,.5));
}
#mem-question.show { display: block; }
@keyframes mem-q-float {
  0%,100% { transform: translateY(0) scale(1) rotate(-3deg); }
  50%      { transform: translateY(-10px) scale(1.06) rotate(3deg); }
}

/* ─── Feedback section ────────────────────────────────── */
#mem-feedback {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-height: 68px;
  justify-content: center;
  width: 100%;
}
#mem-fb-emoji { font-size: 46px; display: none; }
#mem-fb-emoji.show { display: block; animation: mem-pop .45s cubic-bezier(.2,1.6,.4,1); }
#mem-fb-text {
  font-family: 'Fredoka One', cursive;
  font-size: 22px;
  text-align: center;
  display: none;
  color: var(--text, #3D2B56);
}
#mem-fb-text.show { display: block; animation: mem-pop .45s cubic-bezier(.2,1.6,.4,1) .07s both; }
#mem-fb-text.mem-fb-success { color: var(--primary, #FF6B9D); }
#mem-fb-text.mem-fb-error   { color: #E53935; }
@keyframes mem-pop {
  from { transform: scale(0) rotate(-10deg); opacity:0; }
  to   { transform: scale(1) rotate(0deg);   opacity:1; }
}
#mem-retry-text { font-size:13px; color:var(--text); opacity:.65; font-weight:700; display:none; }
#mem-retry-text.show { display: block; }

/* ─── Round counter ───────────────────────────────────── */
.mem-round-counter {
  font-family: 'Fredoka One', sans-serif;
  font-size: 13px;
  color: var(--primary, #FF6B9D);
  background: var(--soft, #F8E8F8);
  border: 1.5px solid var(--border, #E8D5F5);
  border-radius: 20px;
  padding: 4px 14px;
  letter-spacing: .3px;
}

/* ─── Action buttons ──────────────────────────────────── */
#mem-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  width: 100%;
}
#mem-replay-btn, #mem-nextround-btn, #mem-continue-btn {
  display: none;
  font-family: 'Fredoka One', cursive;
  font-size: 16px;
  padding: 12px 28px;
  border-radius: 40px;
  border: none;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  animation: mem-pop .45s cubic-bezier(.2,1.6,.4,1);
}
#mem-replay-btn.show     { display: inline-flex; align-items:center; gap:6px; background:linear-gradient(135deg,#6366F1,#A855F7); color:#fff; box-shadow:0 5px 20px rgba(99,102,241,.4); }
#mem-nextround-btn.show  { display: inline-flex; align-items:center; gap:6px; background:linear-gradient(135deg,#4ECDC4,#26A69A); color:#fff; box-shadow:0 5px 20px rgba(78,205,196,.4); }
#mem-continue-btn.show   { display: inline-flex; align-items:center; gap:6px; background:linear-gradient(135deg,#FF6B9D,#FF8C00); color:#fff; box-shadow:0 5px 20px rgba(255,107,157,.4); }
#mem-replay-btn:hover, #mem-nextround-btn:hover,
#mem-continue-btn:hover  { transform:scale(1.07); }
#mem-replay-btn:active, #mem-nextround-btn:active,
#mem-continue-btn:active { transform:scale(.94); }

/* Shuffle fade animation */
.mem-card.mem-shuffle-out { opacity:0 !important; transform:scale(0.82) !important; transition:opacity .22s, transform .22s !important; }
.mem-card.mem-shuffle-in  { opacity:1 !important; transform:scale(1)    !important; transition:opacity .28s, transform .28s !important; }

/* ─── Responsive ──────────────────────────────────────────
   Mobile-first: base = phone ~375px
   360px  very small phones
   480px  phones
   600px  tablet portrait
   768px  tablet landscape
   1024px laptop
   height: 500px / 600px landscape guards
   ─────────────────────────────────────────────────────── */

/* Very small phones (≤360px) */
@media (max-width:360px) {
  #mem-card-grid { --mcw:105px; --mch:140px; --mcg:10px; }
  #mem-game { padding:10px 12px 14px; gap:8px; margin:6px 8px 0; }
  .mem-card-emoji { font-size:46px; }
  #mem-fb-text { font-size:16px; }
  #mem-replay-btn, #mem-continue-btn { font-size:14px; padding:10px 18px; }
  #mem-caption { font-size:12px; padding:7px 14px; }
}

/* Phones (361px – 480px) */
@media (min-width:361px) and (max-width:480px) {
  #mem-card-grid { --mcw:122px; --mch:165px; --mcg:12px; }
  .mem-card-emoji { font-size:54px; }
  #mem-fb-text { font-size:18px; }
}

/* Tablet portrait (600px – 767px) */
@media (min-width:600px) {
  #mem-card-grid { --mcw:168px; --mch:224px; --mcg:20px; }
  .mem-card-emoji { font-size:78px; }
  #mem-game { max-width:580px; }
}

/* Tablet landscape / small laptop (768px – 1023px) */
@media (min-width:768px) {
  #mem-card-grid { --mcw:188px; --mch:252px; --mcg:24px; }
  .mem-card-emoji { font-size:90px; }
  #mem-game { max-width:660px; }
  #mem-caption { font-size:16px; }
  #mem-replay-btn, #mem-continue-btn { font-size:18px; padding:14px 32px; }
}

/* Laptop (≥1024px) */
@media (min-width:1024px) {
  #mem-card-grid { --mcw:210px; --mch:280px; --mcg:28px; }
  .mem-card-emoji { font-size:100px; }
  #mem-game { max-width:760px; }
  #mem-caption { font-size:17px; }
}

/* Landscape / short screens (height ≤600px) */
@media (max-height:600px) {
  #mem-card-grid { --mcw:112px; --mch:150px; --mcg:10px; }
  #mem-game { padding:6px 12px 0; gap:6px; }
  .mem-card-emoji { font-size:48px; }
  #mem-feedback { min-height:46px; }
  #mem-caption { font-size:12px; min-height:36px; padding:6px 14px; }
}

/* Very short screens (height ≤480px) */
@media (max-height:480px) {
  #mem-card-grid { --mcw:90px; --mch:120px; --mcg:8px; }
  #mem-game { padding:4px 10px 0; gap:4px; }
  .mem-card-emoji { font-size:40px; }
  #mem-feedback { min-height:36px; }
  .mem-back-icon { font-size:32px; }
}

/* ═══════════════════════════════════════════════════
   MEMORY HUB — game selection landing
   ═══════════════════════════════════════════════════ */

#mem-hub {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 18px 16px 28px;
  width: 100%;
  max-width: 600px;
  align-self: center;
}
.mem-hub-subtitle {
  font-family: 'Fredoka One', sans-serif;
  font-size: 20px;
  color: var(--primary, #FF6B9D);
  text-align: center;
}
.mem-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  width: 100%;
}
/* 5th tile spans full width on 2-col */
.mem-hub-tile:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  max-width: 260px;
  justify-self: center;
}

.mem-hub-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 18px 10px 14px;
  background: var(--card, #fff);
  border: 2.5px solid var(--border, #E8D5F5);
  border-radius: 22px;
  box-shadow: 0 4px 18px rgba(0,0,0,.07);
  cursor: pointer;
  transition: transform .18s, box-shadow .18s, border-color .18s;
  position: relative;
  overflow: hidden;
}
.mem-hub-tile::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--htc, #FF6B9D) 0%, transparent 60%);
  opacity: .07;
  pointer-events: none;
}
.mem-hub-tile:hover  { transform: translateY(-3px) scale(1.03); box-shadow:0 8px 28px rgba(0,0,0,.13); border-color: var(--htc, #FF6B9D); }
.mem-hub-tile:active { transform: scale(.96); }

.mem-hub-tile-icon {
  font-size: 36px;
  line-height: 1;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.15));
}
.mem-hub-tile-name {
  font-family: 'Fredoka One', sans-serif;
  font-size: 16px;
  color: var(--text, #3D2B56);
  text-align: center;
}
.mem-hub-tile-desc {
  font-size: 11px;
  font-weight: 700;
  color: var(--text, #3D2B56);
  opacity: .65;
  text-align: center;
  line-height: 1.3;
}

/* Per-tile completion star badge */
.mem-tile-badge {
  display: none;
  position: absolute;
  top: 7px;
  right: 8px;
  font-size: 13px;
  line-height: 1;
  background: rgba(255,215,0,.25);
  border: 1.5px solid rgba(255,180,0,.5);
  border-radius: 10px;
  padding: 2px 5px;
  pointer-events: none;
}

/* ── Hub overall progress bar ── */
.mem-hub-progress {
  width: 100%;
  background: var(--card, #fff);
  border: 2px solid var(--border, #E8D5F5);
  border-radius: 18px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}
.mem-hub-prog-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mem-hub-prog-label {
  font-size: 13px;
  font-weight: 800;
  color: var(--text, #3D2B56);
}
.mem-hub-stars-badge {
  font-size: 13px;
  font-weight: 800;
  color: #F59E0B;
  background: rgba(255,215,0,.15);
  border: 1.5px solid rgba(255,180,0,.4);
  border-radius: 12px;
  padding: 3px 9px;
}
.mem-hub-prog-track {
  height: 10px;
  background: var(--soft, #F8E8F8);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border, #E8D5F5);
}
.mem-hub-prog-bar {
  height: 100%;
  background: linear-gradient(90deg, #FF6B9D, #A855F7);
  border-radius: 10px;
  transition: width .6s cubic-bezier(.34,1.4,.64,1);
}

/* ═══════════════════════════════════════════════════
   SHARED game section wrapper + common elements
   ═══════════════════════════════════════════════════ */

.mem-game-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: calc(100% - 24px);
  max-width: 520px;
  padding: 16px 20px 20px;
  margin: 8px 12px 0;
  background: var(--card, #fff);
  border-radius: 24px;
  border: 2px solid var(--border, #E8D5F5);
  box-shadow: 0 4px 24px rgba(0,0,0,.08);
}
/* #mem-game is also a game section */
#mem-game { display: flex; /* overridden from style="display:none" by JS */ }

.mem-g-msg {
  background: var(--soft, #F8E8F8);
  border: 1.5px solid var(--border, #E8D5F5);
  border-radius: 16px;
  padding: 9px 20px;
  font-size: 15px;
  font-weight: 800;
  text-align: center;
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text, #3D2B56);
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}

.mem-g-score {
  font-size: 13px;
  font-weight: 800;
  color: var(--text, #3D2B56);
  opacity: .7;
  text-align: center;
}

.mem-g-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  width: 100%;
}
.mem-g-btn {
  font-family: 'Fredoka One', sans-serif;
  font-size: 15px;
  padding: 11px 24px;
  border-radius: 40px;
  border: none;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  animation: mem-pop .45s cubic-bezier(.2,1.6,.4,1);
}
.mem-g-btn:hover  { transform: scale(1.07); }
.mem-g-btn:active { transform: scale(.94); }
.mem-g-btn-replay { background: linear-gradient(135deg,#A855F7,#6366F1); color:#fff; box-shadow:0 5px 18px rgba(168,85,247,.4); }
.mem-g-btn-home   { background: var(--soft,#F8E8F8); color:var(--text,#3D2B56); border:2px solid var(--border,#E8D5F5); }
.mem-g-btn-next   { background: linear-gradient(135deg,#FF6B9D,#FF8C00); color:#fff; box-shadow:0 5px 18px rgba(255,107,157,.4); }

/* ═══════════════════════════════════════════════════
   GAME 2 — Simon Says
   ═══════════════════════════════════════════════════ */

.mem-simon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  width: 100%;
  max-width: 340px;
}
.mem-simon-btn {
  aspect-ratio: 1;
  border-radius: 22px;
  border: 3px solid transparent;
  cursor: pointer;
  font-size: 0;        /* emoji added via CSS */
  transition: transform .1s, filter .1s;
  box-shadow: 0 6px 20px rgba(0,0,0,.18);
  position: relative;
  overflow: hidden;
}
.mem-simon-btn::after {
  content: attr(data-emoji);
  font-size: 42px;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mem-simon-btn:active { transform: scale(.92); }
.mem-simon-btn.mem-interactive { cursor: pointer; }
.mem-simon-btn.mem-interactive:hover { filter: brightness(1.15); transform: scale(1.04); }

/* Colors */
.mem-sb-red    { background: linear-gradient(145deg,#FF6B6B,#C0392B); }
.mem-sb-blue   { background: linear-gradient(145deg,#74B9FF,#0984E3); }
.mem-sb-green  { background: linear-gradient(145deg,#55EFC4,#00B894); }
.mem-sb-yellow { background: linear-gradient(145deg,#FFEAA7,#FDCB6E); }

/* Flash: brighter + border glow */
.mem-simon-btn.mem-simon-flash {
  filter: brightness(1.7) saturate(1.3);
  border-color: #fff;
  box-shadow: 0 0 32px rgba(255,255,255,.8), 0 6px 20px rgba(0,0,0,.18);
  transform: scale(1.1);
}

/* ═══════════════════════════════════════════════════
   GAME 3 — Emoji Pairs
   ═══════════════════════════════════════════════════ */

.mem-pairs-grid {
  display: grid;
  grid-template-columns: repeat(4, var(--pcw, 80px));
  gap: var(--pcg, 10px);
}
.mem-pair-card {
  width:  var(--pcw, 80px);
  height: var(--pch, 80px);
  perspective: 600px;
  cursor: pointer;
}
.mem-pair-card-inner {
  width: 100%; height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform .45s cubic-bezier(.3,1.2,.4,1);
  border-radius: 14px;
}
.mem-pair-card.flipped .mem-pair-card-inner { transform: rotateY(180deg); }
.mem-pair-card-face {
  position: absolute; inset: 0;
  border-radius: 14px;
  backface-visibility: hidden;
  display: flex; align-items: center; justify-content: center;
  font-size: 34px;
}
.mem-pair-card-back {
  background: linear-gradient(145deg, var(--primary,#FF6B9D), var(--secondary,#4ECDC4));
  box-shadow: 0 4px 14px rgba(0,0,0,.18);
  font-size: 22px; /* ? */
  color: rgba(255,255,255,.6);
  border: 2px solid rgba(255,255,255,.3);
}
.mem-pair-card-front {
  background: var(--card, #fff);
  transform: rotateY(180deg);
  border: 2.5px solid var(--border, #E8D5F5);
  box-shadow: 0 4px 14px rgba(0,0,0,.1);
}
.mem-pair-card.matched .mem-pair-card-front {
  background: linear-gradient(135deg,#E8F5E9,#C8E6C9);
  border-color: #4CAF50;
  animation: pair-match-pop .4s cubic-bezier(.2,1.6,.4,1);
}
@keyframes pair-match-pop {
  from { transform: rotateY(180deg) scale(.7); }
  to   { transform: rotateY(180deg) scale(1); }
}
.mem-pair-card.wrong-shake .mem-pair-card-inner {
  animation: pair-wrong-shake .4s ease;
}
@keyframes pair-wrong-shake {
  0%,100% { transform: rotateY(180deg) translateX(0); }
  25%     { transform: rotateY(180deg) translateX(-8px); }
  75%     { transform: rotateY(180deg) translateX(8px); }
}

/* ═══════════════════════════════════════════════════
   GAME 4 — Number Order
   ═══════════════════════════════════════════════════ */

.mem-numorder-grid {
  display: grid;
  grid-template-columns: repeat(3, var(--now, 90px));
  gap: var(--nog, 10px);
}
.mem-num-btn {
  width:  var(--now, 90px);
  height: var(--noh, 90px);
  border-radius: 50%;
  border: 3px solid var(--border, #E8D5F5);
  background: var(--soft, #F8E8F8);
  font-family: 'Fredoka One', sans-serif;
  font-size: 28px;
  color: var(--text, #3D2B56);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: transform .15s, background .2s, border-color .2s;
  box-shadow: 0 4px 12px rgba(0,0,0,.1);
  touch-action: manipulation;
}
.mem-num-btn:hover  { transform: scale(1.1); border-color: var(--primary,#FF6B9D); }
.mem-num-btn:active { transform: scale(.9); }
.mem-num-btn.num-highlight {
  background: var(--primary, #FF6B9D);
  border-color: var(--primary, #FF6B9D);
  color: #fff;
  transform: scale(1.18);
  box-shadow: 0 0 22px var(--primary,#FF6B9D);
}
.mem-num-btn.num-correct {
  background: linear-gradient(135deg,#4CAF50,#2E7D32);
  border-color: #4CAF50; color:#fff;
  animation: mem-pop .3s cubic-bezier(.2,1.6,.4,1);
}
.mem-num-btn.num-wrong {
  background: #FFEBEE; border-color:#E53935; color:#E53935;
  animation: num-wrong-shake .4s ease;
}
.mem-num-btn.num-done {
  background: #E8F5E9; border-color:#4CAF50; color:#4CAF50;
  cursor: default; pointer-events: none;
}
@keyframes num-wrong-shake {
  0%,100% { transform: translateX(0); }
  25%     { transform: translateX(-8px); }
  75%     { transform: translateX(8px); }
}

/* ═══════════════════════════════════════════════════
   GAME 5 — What's Missing
   ═══════════════════════════════════════════════════ */

.mem-missing-display {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 8px;
  background: var(--soft, #F8E8F8);
  border: 2px solid var(--border, #E8D5F5);
  border-radius: 18px;
  min-height: 80px;
  align-items: center;
}
.mem-missing-emoji {
  font-size: 44px;
  line-height: 1;
  transition: transform .25s;
}
.mem-missing-emoji.hidden {
  font-size: 44px;
  filter: grayscale(1) opacity(.3);
  animation: missing-pulse 1.2s ease-in-out infinite;
}
@keyframes missing-pulse {
  0%,100% { transform: scale(1); }
  50%     { transform: scale(1.1) rotate(5deg); }
}

.mem-missing-question {
  font-size: 15px;
  font-weight: 800;
  color: var(--text, #3D2B56);
  text-align: center;
}
.mem-missing-choices {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  width: 100%;
  max-width: 320px;
}
.mem-missing-choice {
  font-size: 40px;
  padding: 14px 8px;
  border-radius: 16px;
  border: 2.5px solid var(--border,#E8D5F5);
  background: var(--card,#fff);
  cursor: pointer;
  text-align: center;
  display: flex; align-items: center; justify-content: center;
  transition: transform .15s, border-color .15s;
  box-shadow: 0 3px 10px rgba(0,0,0,.08);
  touch-action: manipulation;
}
.mem-missing-choice:hover  { transform: scale(1.08); border-color: var(--primary,#FF6B9D); }
.mem-missing-choice:active { transform: scale(.93); }
.mem-missing-choice.correct { border-color:#4CAF50; background:#E8F5E9; animation: mem-pop .4s cubic-bezier(.2,1.6,.4,1); }
.mem-missing-choice.wrong   { border-color:#E53935; background:#FFEBEE; }

/* ═══════════════════════════════════════════════════
   RESPONSIVE — hub + new games
   ═══════════════════════════════════════════════════ */

@media (max-width:360px) {
  .mem-hub-tile-icon { font-size:28px; }
  .mem-hub-tile-name { font-size:13px; }
  .mem-hub-tile { padding:12px 8px 10px; }
  .mem-simon-grid { gap:10px; }
  .mem-simon-btn::after { font-size:32px; }
  .mem-pairs-grid { --pcw:62px; --pch:62px; --pcg:8px; }
  .mem-pair-card-face { font-size:26px; }
  .mem-numorder-grid { --now:72px; --noh:72px; --nog:8px; }
  .mem-num-btn { font-size:22px; }
  .mem-missing-emoji { font-size:34px; }
  .mem-missing-choice { font-size:32px; padding:10px 6px; }
  .mem-g-btn { font-size:13px; padding:9px 18px; }
}
@media (min-width:361px) and (max-width:480px) {
  .mem-pairs-grid { --pcw:72px; --pch:72px; --pcg:9px; }
  .mem-numorder-grid { --now:82px; --noh:82px; --nog:9px; }
}
@media (min-width:600px) {
  .mem-hub-grid { grid-template-columns: repeat(3, 1fr); }
  .mem-hub-tile:last-child:nth-child(odd) { grid-column: auto; max-width: none; justify-self: auto; }
  .mem-pairs-grid { --pcw:92px; --pch:92px; --pcg:12px; }
  .mem-pair-card-face { font-size:40px; }
  .mem-numorder-grid { --now:100px; --noh:100px; --nog:12px; }
  .mem-num-btn { font-size:32px; }
  .mem-missing-emoji { font-size:52px; }
}
@media (min-width:768px) {
  .mem-hub-tile-icon { font-size:44px; }
  .mem-hub-tile-name { font-size:18px; }
  .mem-hub-tile-desc { font-size:13px; }
  .mem-simon-btn::after { font-size:54px; }
  .mem-pairs-grid { --pcw:106px; --pch:106px; --pcg:14px; }
  .mem-pair-card-face { font-size:48px; }
  .mem-numorder-grid { --now:110px; --noh:110px; --nog:14px; }
  .mem-num-btn { font-size:36px; }
  .mem-missing-emoji { font-size:60px; }
  .mem-missing-choices { max-width:380px; }
  .mem-game-section { max-width:580px; }
  #mem-hub { max-width:680px; }
}
@media (max-height:600px) {
  .mem-hub-tile { padding:10px 8px; }
  .mem-hub-tile-icon { font-size:26px; }
  .mem-pairs-grid { --pcw:58px; --pch:58px; --pcg:7px; }
  .mem-numorder-grid { --now:68px; --noh:68px; --nog:7px; }
  .mem-missing-emoji { font-size:32px; }
  .mem-game-section { gap:8px; padding:10px 14px 12px; }
}