body[data-theme] { --memory-indigo: #5b4bd7; --memory-pink: #e35e98; }
.memory-layout { display: grid; grid-template-columns: minmax(245px, 300px) minmax(0, 1fr); gap: 16px; flex: 1; }
.memory-panel, .memory-stage { padding: clamp(18px, 3vw, 28px); }
.panel-heading, .stage-heading { display: flex; align-items: center; gap: 10px; }
.panel-heading h2, .stage-heading h2, .memory-guide h2, .memory-guide h3 { font-family: var(--font-display); }
.panel-heading > span { color: var(--memory-pink); }
.difficulty-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin: 20px 0; }
.difficulty-btn { min-height: 52px; border: 1px solid var(--color-border); border-radius: 11px; background: var(--color-surface-hover); color: var(--text-secondary); font: 800 .82rem var(--font-display); cursor: pointer; }
.difficulty-btn small { display: block; margin-top: 2px; font: 700 .67rem var(--font-mono); opacity: .75; }
.difficulty-btn.is-active { border-color: var(--memory-indigo); color: #fff; background: linear-gradient(135deg, var(--memory-indigo), #8767d5); box-shadow: 0 7px 15px rgba(91, 75, 215, .25); }
.difficulty-btn:focus-visible, .memory-card:focus-visible, .restart-btn:focus-visible { outline: 3px solid var(--accent-amber); outline-offset: 3px; }
.game-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 0; }
.game-stats div { padding: 12px; border: 1px solid var(--color-border); border-radius: 12px; background: var(--color-surface-hover); }
.game-stats div:first-child { grid-column: 1 / -1; }
.game-stats dt { color: var(--text-muted); font-size: .74rem; font-weight: 800; }
.game-stats dd { margin: 5px 0 0; color: var(--text-primary); font: 800 1.12rem var(--font-mono); }
.best-record { display: flex; align-items: center; gap: 7px; margin: 17px 0; color: var(--text-secondary); font-size: .83rem; }.best-record span { color: var(--accent-amber); font-size: 20px; }.best-record p { margin: 0; }
.restart-btn { display: flex; align-items: center; justify-content: center; width: 100%; gap: 7px; }.restart-btn .material-symbols-outlined { font-size: 19px; }
.memory-stage { min-width: 0; }.stage-heading { align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 22px; }.stage-kicker { margin: 0 0 5px; color: var(--memory-pink); font: 800 .72rem var(--font-mono); letter-spacing: .1em; }.stage-heading h2 { font-size: clamp(1.2rem, 3vw, 1.6rem); }.stage-status { max-width: 260px; margin: 2px 0 0; color: var(--text-secondary); font-size: .86rem; font-weight: 700; line-height: 1.5; text-align: right; }
.memory-board { display: grid; grid-template-columns: repeat(4, minmax(44px, 1fr)); gap: clamp(7px, 1.5vw, 13px); width: min(100%, 620px); margin: auto; }.memory-board.board-hard { width: min(100%, 740px); grid-template-columns: repeat(6, minmax(44px, 1fr)); }
.memory-card { position: relative; min-width: 44px; min-height: 44px; aspect-ratio: 1; overflow: hidden; border: 1px solid rgba(255,255,255,.22); border-radius: clamp(10px, 1.6vw, 18px); color: #fff; background: linear-gradient(145deg, #3e318e, #785acd); box-shadow: inset 0 1px rgba(255,255,255,.2), 0 5px 12px rgba(53, 34, 116, .2); cursor: pointer; transition: transform .16s ease, background .2s ease, border-color .2s ease; }.memory-card:hover:not(:disabled) { transform: translateY(-2px); }.memory-card:active:not(:disabled) { transform: scale(.97); }.memory-card:disabled { cursor: default; }
.card-back, .card-symbol { position: absolute; inset: 0; display: grid; place-items: center; }.card-back { color: rgba(255,255,255,.85); font-size: clamp(1rem, 3vw, 1.45rem); }.card-symbol { font-size: clamp(1.45rem, 5.3vw, 2.6rem); transform: scale(.72); opacity: 0; transition: transform .16s ease, opacity .16s ease; }.memory-card.is-open, .memory-card.is-matched { border-color: var(--color-border); background: var(--color-surface); box-shadow: inset 0 1px rgba(255,255,255,.45), 0 5px 12px rgba(53, 34, 116, .1); }.memory-card.is-open .card-back, .memory-card.is-matched .card-back { opacity: 0; }.memory-card.is-open .card-symbol, .memory-card.is-matched .card-symbol { transform: scale(1); opacity: 1; }.memory-card.is-matched { border-color: var(--accent-emerald); background: color-mix(in srgb, var(--accent-emerald) 11%, var(--color-surface)); }
.memory-guide { margin: 16px 0 28px; padding: clamp(24px, 5vw, 46px); }.memory-guide h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); }.guide-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }.guide-columns section { padding-top: 12px; border-top: 2px solid var(--color-border); }.guide-columns span { color: var(--memory-pink); font: 800 .75rem var(--font-mono); }.guide-columns h3 { margin: 8px 0; font-size: 1rem; }.guide-columns p { color: var(--text-secondary); font-size: .9rem; line-height: 1.7; }
.result-card { width: min(100%, 460px); }.result-summary { margin: 0; font-size: 1.05rem; font-weight: 700; line-height: 1.6; }.result-best { margin: 12px 0 0; color: var(--accent-emerald); font-weight: 800; }
.card-back { background: #44317e url('../assets/card-back.svg') center / 100% 100% no-repeat; transition: opacity .16s ease; }
.memory-card:not(.is-open):not(.is-matched) { border-color: #bba0db; }
.memory-card:not(.is-open):not(.is-matched):hover { border-color: #edcf9f; }
@media (max-width: 760px) { .memory-layout { grid-template-columns: 1fr; }.memory-panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }.panel-heading, .difficulty-picker { grid-column: 1 / -1; }.difficulty-picker { margin: 0; }.game-stats { align-content: start; }.best-record { margin: 0; align-self: center; }.restart-btn { align-self: center; }.stage-heading { display: block; }.stage-status { max-width: none; margin-top: 9px; text-align: left; }.memory-board.board-hard { grid-template-columns: repeat(4, minmax(44px, 1fr)); } }
@media (max-width: 430px) { .memory-panel, .memory-stage { padding: 16px; }.memory-panel { grid-template-columns: 1fr; }.panel-heading, .difficulty-picker { grid-column: auto; }.best-record { margin: 0; }.memory-board { gap: 8px; }.memory-card { border-radius: 11px; }.guide-columns { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .memory-card, .card-symbol, .card-back { transition-duration: .01ms; } }