/* ============================================================================
   Memory Match (memory.js)
   ============================================================================ */
#screen-memory {
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-3) 72px;
}
#screen-memory .gh { max-width: 520px; }

/* ---- DeeDee's tip line (shared look: a dog head + a speech bubble) ---- */
.deedee-tip {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    width: 100%;
    max-width: 520px;
    flex-shrink: 0;
}
.deedee-tip-dog {
    width: 52px;
    height: auto;
    flex-shrink: 0;
    transform-origin: 50% 90%;
    filter: drop-shadow(0 3px 5px rgba(26, 43, 74, 0.18));
}
.deedee-tip-text {
    position: relative;
    flex: 1;
    min-height: var(--tap);
    display: flex;
    align-items: center;
    padding: var(--sp-2) var(--sp-4);
    background: var(--c-surface);
    border: 3px solid var(--blue-line);
    border-radius: var(--r-md);
    font-weight: 800;
    color: var(--c-ink);
    box-shadow: var(--sh-card);
}
.deedee-tip-text::before {
    content: '';
    position: absolute;
    left: -11px;
    top: 50%;
    transform: translateY(-50%);
    border: 8px solid transparent;
    border-right-color: var(--blue-line);
    border-left: 0;
}

.memory-grid {
    display: grid;
    gap: clamp(6px, 1.6vw, 10px);
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    padding: var(--sp-1);
    flex: 1;
    align-content: center;
}
.memory-card {
    aspect-ratio: 1;
    cursor: pointer;
    perspective: 600px;
    -webkit-tap-highlight-color: transparent;
}
.memory-card:active .memory-card-inner { transform: scale(0.95); }
.memory-card.flipped:active .memory-card-inner { transform: rotateY(180deg); }
.memory-card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.38s ease;
    border-radius: var(--r-md);
}
.memory-card.flipped .memory-card-inner,
.memory-card.matched .memory-card-inner { transform: rotateY(180deg); }
.memory-card-back,
.memory-card-front {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--r-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(2.2rem, 10vw, 4.4rem);
    border: 3px solid;
    user-select: none;
}
/* Back: DeeDee blue with a paw print, like a clay hub card */
.memory-card-back {
    background:
        radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.35) 0 18%, transparent 19%),
        linear-gradient(135deg, var(--mem-back-1), var(--mem-back-2));
    border-color: var(--mem-back-line);
    box-shadow: 0 4px 0 var(--mem-back-line);
    color: var(--c-ink-on-dark);
    font-size: clamp(1.4rem, 6vw, 2.2rem);
}
.memory-card-front {
    background: linear-gradient(135deg, var(--mem-front-1), var(--mem-front-2));
    border-color: var(--mem-front-line);
    box-shadow: 0 4px 0 var(--mem-front-line);
    transform: rotateY(180deg);
}
.memory-card.matched .memory-card-front {
    background: linear-gradient(135deg, var(--mem-match-1), var(--mem-match-2));
    border-color: var(--mem-match-line);
    box-shadow: 0 4px 0 var(--mem-match-line);
}
.memory-card.matched { animation: memoryMatchPop 0.45s ease; pointer-events: none; }
@keyframes memoryMatchPop {
    0%   { transform: scale(1); }
    40%  { transform: scale(1.12); }
    100% { transform: scale(1); }
}
.memory-result-card { max-width: 360px; }