:root {
  --ink: #fffaf2; --muted: #c9c3d5; --night: #17132d; --night-2: #251c43;
  --gold: #ffc857; --orange: #ff795b; --cyan: #57d5da; --paper: #f4eadc;
  --black: #17131c; --line: rgba(255,255,255,.17); --radius: 12px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink); background: var(--night); font-size: 16px; color-scheme: dark;
}
* { box-sizing: border-box; }
html { min-height: 100%; background: var(--night); }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden; background: radial-gradient(circle at 50% -15%, #43316d 0, var(--night) 46rem); }
button, input { font: inherit; }
button { touch-action: manipulation; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .8rem 1rem; background: var(--gold); color: var(--black); }
.skip-link:focus { top: 1rem; }
.stage-lights { position: fixed; inset: 0; overflow: hidden; pointer-events: none; opacity: .22; }
.stage-lights span { position: absolute; top: -10vh; width: 24rem; height: 90vh; background: linear-gradient(to bottom, rgba(255,230,155,.7), transparent 78%); clip-path: polygon(43% 0,57% 0,100% 100%,0 100%); }
.stage-lights span:first-child { left: -7rem; transform: rotate(-10deg); }
.stage-lights span:last-child { right: -7rem; transform: rotate(10deg); }
.topbar { position: relative; z-index: 5; width: min(1500px, 100%); margin: 0 auto; padding: 1rem clamp(1rem,3vw,2.5rem); display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); text-decoration: none; display: flex; align-items: center; }
.brand-logo { display: block; width: clamp(3.4rem,5vw,4.5rem); height: clamp(3.4rem,5vw,4.5rem); object-fit: contain; filter: drop-shadow(0 5px 8px rgba(0,0,0,.28)); }
.topbar-actions { display: flex; align-items: center; gap: .55rem; }
.icon-button { min-height: 44px; padding: .55rem .8rem; border: 1px solid var(--line); background: rgba(23,19,45,.65); color: var(--ink); cursor: pointer; display: flex; gap: .45rem; align-items: center; }
main { position: relative; z-index: 1; flex: 1; width: min(1500px,100%); margin: 0 auto; }
.screen { display: none; padding: clamp(1.2rem,3vw,3rem); min-height: calc(100vh - 8rem); animation: screen-in .3s ease both; }
.screen.is-active { display: block; }
#start-screen.is-active { display: grid; grid-template-columns: minmax(0,1.2fr) minmax(320px,.8fr); gap: clamp(2rem,7vw,8rem); align-items: center; max-width: 1250px; margin: auto; }
.eyebrow { color: var(--gold); text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 900; margin: 0 0 .8rem; }
.hero-logo { display: block; width: min(100%,34rem); height: auto; margin: -2.5rem 0 -1.5rem; object-fit: contain; filter: drop-shadow(0 1.2rem 1.3rem rgba(0,0,0,.28)); }
.intro { max-width: 35rem; margin-top: 0; font-size: 1.1rem; line-height: 1.6; color: var(--muted); }
.start-panel { background: rgba(37,28,67,.88); border: 1px solid var(--line); border-top: 5px solid var(--gold); padding: clamp(1.3rem,3vw,2rem); box-shadow: 16px 16px 0 rgba(0,0,0,.16); }
.level-picker, .mode-picker { margin: 0; padding: 0; border: 0; display: grid; gap: .65rem; }
.mode-picker { grid-template-columns: 1fr 1fr; margin-bottom: 1.2rem; }
.level-picker legend, .mode-picker legend { grid-column: 1/-1; font-size: 1.35rem; font-weight: 900; margin-bottom: .8rem; }
.mode-picker legend { font-size: 1.05rem; margin-bottom: .3rem; }
.level-picker label, .mode-picker label { cursor: pointer; }
.level-picker input, .mode-picker input { position: absolute; opacity: 0; }
.level-picker label > span, .mode-picker label > span { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; padding: .9rem 1rem; min-height: 54px; border: 2px solid var(--line); background: rgba(0,0,0,.12); }
.mode-picker label > span { height: 100%; flex-direction: column; gap: .15rem; align-items: flex-start; }
.level-picker input:checked + span, .mode-picker input:checked + span { color: var(--black); background: var(--gold); border-color: var(--gold); }
.level-picker input:focus-visible + span, .mode-picker input:focus-visible + span { outline: 3px solid var(--cyan); outline-offset: 3px; }
.level-picker small, .mode-picker small { font-size: .88rem; opacity: .78; }
.player-names { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; margin: -.45rem 0 1.2rem; padding: .8rem; border-left: 4px solid var(--cyan); background: rgba(0,0,0,.14); }
.player-names[hidden] { display: none; }
.player-names label { color: var(--muted); font-size: .78rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.player-names input { width: 100%; min-height: 44px; margin-top: .35rem; padding: .55rem .65rem; border: 2px solid var(--line); background: var(--night); color: var(--ink); font-weight: 800; }
.player-names input:focus { outline: 3px solid var(--cyan); outline-offset: 2px; }
.best-score { min-height: 1.5rem; color: var(--cyan); font-size: .9rem; margin: 1rem 0 .7rem; }
.button { min-height: 46px; padding: .72rem 1rem; border: 2px solid var(--line); border-radius: 2px; background: var(--night-2); color: var(--ink); cursor: pointer; font-weight: 800; }
.button:hover { border-color: var(--cyan); }
.button:focus-visible, .icon-button:focus-visible, .text-button:focus-visible, .dialog-close:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.button-primary { width: 100%; color: var(--black); background: var(--gold); border-color: var(--gold); display: flex; justify-content: center; gap: 1rem; }
.button-primary:hover { background: #ffdb85; border-color: #ffdb85; }
.secondary-actions { margin-top: .7rem; display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; }
.button-quiet { background: transparent; }
.text-button { display: block; margin: 1rem auto 0; border: 0; background: none; color: var(--muted); text-decoration: underline; cursor: pointer; font-size: .82rem; }
.game-toolbar { position: sticky; top: 0; z-index: 10; margin: -1rem 0 1.3rem; padding: .75rem; display: flex; gap: 1rem; justify-content: space-between; align-items: center; background: rgba(23,19,45,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(9px); }
.stats { display: flex; gap: clamp(.5rem,3vw,2.5rem); }
.stats div { display: grid; min-width: 5rem; }
.stats span { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .09em; }
.stats strong { font-size: 1.4rem; }
.toolbar-actions { display: flex; gap: .5rem; }
.button-small { min-height: 40px; padding: .5rem .75rem; }
.versus-scoreboard { max-width: 740px; margin: 0 auto 1.2rem; display: grid; grid-template-columns: 1fr minmax(150px,auto) 1fr; align-items: stretch; border: 1px solid var(--line); background: rgba(37,28,67,.9); }
.versus-scoreboard[hidden] { display: none; }
.versus-scoreboard > p { display: grid; place-items: center; margin: 0; padding: .7rem; color: var(--gold); text-align: center; font-weight: 900; }
.player-score { position: relative; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 0 .65rem; padding: .7rem 1rem; opacity: .65; border-bottom: 4px solid transparent; }
.player-score:last-child { text-align: right; }
.player-score.is-active { opacity: 1; background: rgba(87,213,218,.1); border-bottom-color: var(--cyan); }
.player-score .player-name { overflow: hidden; font-weight: 900; text-overflow: ellipsis; white-space: nowrap; }
.player-score strong { grid-row: 1/3; grid-column: 2; color: var(--gold); font-size: 1.7rem; }
.player-score small { color: var(--muted); font-size: .7rem; text-transform: uppercase; }
.game-board { display: grid; grid-template-columns: repeat(6, minmax(90px,1fr)); gap: clamp(.5rem,1vw,.9rem); max-width: 920px; margin: auto; perspective: 1000px; }
.game-board[data-pairs="15"] { max-width: 1350px; }
.memory-card { position: relative; min-width: 0; aspect-ratio: .74; border: 0; padding: 0; background: none; cursor: pointer; border-radius: var(--radius); perspective: 900px; }
.memory-card:focus-visible { outline: 4px solid var(--cyan); outline-offset: 3px; }
.card-inner { position: absolute; inset: 0; transform-style: preserve-3d; transition: transform .48s cubic-bezier(.2,.7,.2,1); }
.memory-card.is-flipped .card-inner, .memory-card.is-matched .card-inner { transform: rotateY(180deg); }
.card-face { position: absolute; inset: 0; overflow: hidden; border: 2px solid rgba(255,255,255,.2); border-radius: var(--radius); backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.card-back { display: grid; place-items: center; text-align: center; color: var(--night); background: var(--gold); box-shadow: inset 0 0 0 7px var(--night), inset 0 0 0 9px var(--paper); }
.card-back::before { content: ""; position: absolute; inset: 8% 14% 30%; background: rgba(255,255,255,.42); clip-path: polygon(43% 0,57% 0,100% 100%,0 100%); }
.card-back-logo { position: relative; z-index: 1; display: block; width: 88%; height: 88%; object-fit: contain; filter: drop-shadow(0 .4rem .4rem rgba(0,0,0,.25)); }
.card-front { transform: rotateY(180deg); display: flex; flex-direction: column; background: var(--paper); color: var(--black); }
.card-media { flex: 1; min-height: 0; position: relative; overflow: hidden; background: #d7c7b1; }
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.book-card .card-media img { padding: .2rem; object-fit: contain; background: #d7c7b1; }
.author-card .card-media img { object-position: center 24%; }
.image-placeholder { position: absolute; inset: 0; display: grid; place-content: center; gap: .5rem; padding: .7rem; text-align: center; background: linear-gradient(135deg,#e8ddca,#c7b49c); }
.image-placeholder span { font-size: clamp(2rem,5vw,4rem); }
.image-placeholder b { font-size: clamp(.68rem,1.2vw,.95rem); line-height: 1.15; }
.card-copy { min-height: 4.2rem; padding: .55rem .6rem .65rem; border-top: 5px solid var(--orange); text-align: left; }
.author-card .card-copy { border-top-color: var(--cyan); }
.card-type { display: block; color: #6b3e30; font-size: .62rem; font-weight: 1000; letter-spacing: .12em; }
.author-card .card-type { color: #17636b; }
.author-card .card-name { font-size: clamp(.72rem,1.2vw,1rem); }
.card-name { display: -webkit-box; margin-top: .2rem; overflow: hidden; font-weight: 900; font-size: clamp(.67rem,1.15vw,.93rem); line-height: 1.15; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.memory-card.is-matched { cursor: default; }
.memory-card.is-matched .card-front { animation: spotlight 1.1s ease; border-color: var(--gold); box-shadow: 0 0 1.5rem rgba(255,200,87,.65); }
.section-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: center; margin-bottom: 2rem; }
.section-heading h1 { margin: 0; font-size: clamp(2.2rem,5vw,4rem); letter-spacing: -.05em; }
.author-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 1rem; }
.profile { display: grid; grid-template-columns: 5.5rem 5.5rem 1fr; grid-template-rows: auto auto 1fr; gap: .25rem .7rem; padding: 1rem; color: var(--black); background: var(--paper); border-left: 6px solid var(--cyan); }
.profile-media { grid-row: 1/4; position: relative; min-height: 8rem; overflow: hidden; background: #d7c7b1; }
.profile-media:nth-child(2) { border-bottom: 5px solid var(--orange); }
.profile-media img { width: 100%; height: 100%; object-fit: cover; }
.profile-media:first-child img { object-position: center 24%; }
.profile-media:nth-child(2) img { padding: .15rem; object-fit: contain; background: #d7c7b1; }
.profile h2, .profile p { margin: 0; }
.profile h2 { font-size: 1.08rem; }
.profile-book { color: #934630; font-weight: 800; }
.profile-fact { margin-top: .35rem !important; font-size: .88rem; line-height: 1.35; color: #514950; }
.end-stage { position: relative; max-width: 850px; margin: 4vh auto; padding: clamp(2rem,6vw,5rem); text-align: center; overflow: hidden; background: var(--night-2); border-bottom: 10px solid var(--orange); box-shadow: 20px 20px 0 rgba(0,0,0,.2); }
.end-stage > * { position: relative; }
.end-logo { display: block; width: clamp(7.5rem,18vw,11rem); height: auto; margin: -1.3rem auto .4rem; object-fit: contain; filter: drop-shadow(0 .7rem .8rem rgba(0,0,0,.3)); }
.end-spotlight { position: absolute; top: -20%; left: 23%; width: 54%; height: 85%; background: linear-gradient(rgba(255,224,133,.42),transparent); clip-path: polygon(43% 0,57% 0,100% 100%,0 100%); animation: curtain-rise .8s ease both; }
.end-stage h1 { font-size: clamp(2.4rem,6vw,5rem); line-height: .95; letter-spacing: -.055em; }
.rating { color: var(--gold); font-size: 1.5rem; font-weight: 900; }
.versus-result { display: flex; justify-content: center; align-items: center; gap: clamp(1rem,4vw,2.5rem); margin: 1.5rem auto; }
.versus-result[hidden] { display: none; }
.versus-result div { display: grid; min-width: 7rem; padding: .8rem; border-bottom: 4px solid var(--cyan); background: rgba(0,0,0,.18); }
.versus-result div:last-child { border-bottom-color: var(--orange); }
.versus-result span { overflow: hidden; text-overflow: ellipsis; font-weight: 800; }
.versus-result strong { color: var(--gold); font-size: 2rem; }
.end-stats { display: grid; grid-template-columns: repeat(3,1fr); margin: 2rem 0; border-block: 1px solid var(--line); }
.end-stats div { display: grid; padding: 1rem; }
.end-stats span { color: var(--muted); font-size: .8rem; text-transform: uppercase; }
.end-stats strong { font-size: 1.35rem; }
.end-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .7rem; }
.end-actions .button-primary { width: auto; }
dialog { max-width: min(560px,calc(100% - 2rem)); border: 1px solid var(--line); border-top: 7px solid var(--gold); padding: 0; color: var(--ink); background: var(--night-2); box-shadow: 0 1.5rem 5rem #080612; }
dialog::backdrop { background: rgba(8,6,18,.78); backdrop-filter: blur(3px); }
.dialog-inner { position: relative; padding: clamp(1.5rem,4vw,2.5rem); }
.dialog-inner h2 { margin-top: 0; font-size: 1.8rem; }
.dialog-inner li, .dialog-inner p { line-height: 1.55; }
.dialog-close { position: absolute; right: .7rem; top: .5rem; width: 44px; height: 44px; border: 0; background: none; color: var(--ink); font-size: 2rem; cursor: pointer; }
.dialog-ok, #continue-button { margin-top: 1rem; }
kbd { padding: .12rem .35rem; background: var(--ink); color: var(--night); border-radius: 3px; }
footer { position: relative; z-index: 2; display: flex; justify-content: center; gap: 2rem; padding: .8rem; color: #8f899d; font-size: .75rem; }
.fullscreen-hint { position: fixed; z-index: 40; left: 50%; bottom: 1rem; width: min(650px,calc(100% - 2rem)); min-height: 58px; padding: .55rem 3.3rem .55rem .85rem; display: flex; align-items: center; justify-content: space-between; gap: .8rem; color: var(--ink); background: rgba(37,28,67,.97); border: 1px solid var(--line); border-left: 5px solid var(--cyan); box-shadow: 0 .8rem 2.5rem rgba(0,0,0,.38); transform: translateX(-50%); animation: fullscreen-hint-in .35s ease both; backdrop-filter: blur(8px); }
.fullscreen-hint[hidden] { display: none; }
.fullscreen-hint p { margin: 0; display: flex; align-items: center; gap: .7rem; line-height: 1.35; }
.fullscreen-hint kbd { flex: 0 0 auto; min-width: 2rem; padding: .3rem .5rem; text-align: center; font-weight: 900; }
.fullscreen-hint .button { flex: 0 0 auto; color: var(--black); background: var(--gold); border-color: var(--gold); }
.fullscreen-hint-close { position: absolute; right: .35rem; top: 50%; width: 40px; height: 40px; border: 0; color: var(--muted); background: none; font-size: 1.55rem; cursor: pointer; transform: translateY(-50%); }
.fullscreen-hint-close:focus-visible { outline: 3px solid var(--cyan); outline-offset: 0; }
html:fullscreen .fullscreen-hint { display: none; }
.visually-hidden { position: absolute!important; width: 1px!important; height: 1px!important; padding: 0!important; margin: -1px!important; overflow: hidden!important; clip: rect(0,0,0,0)!important; white-space: nowrap!important; border: 0!important; }
@keyframes screen-in { from { opacity: 0; transform: translateY(8px); } }
@keyframes spotlight { 50% { filter: brightness(1.18); transform: scale(1.025); } }
@keyframes curtain-rise { from { transform: translateY(-45%); opacity: 0; } }
@keyframes fullscreen-hint-in { from { opacity: 0; transform: translate(-50%,1rem); } }
@media (min-width: 1250px) { .game-board[data-pairs="15"] { grid-template-columns: repeat(10,minmax(85px,1fr)); } }
@media (max-width: 850px) {
  #start-screen.is-active { grid-template-columns: 1fr; gap: 2rem; }
  .hero { text-align: center; } .hero-logo { margin-inline: auto; } .intro { margin-inline: auto; }
  .game-board { grid-template-columns: repeat(4,minmax(70px,1fr)); }
  .game-toolbar { align-items: stretch; } .toolbar-actions { flex-direction: column; }
}
@media (max-width: 500px) {
  .screen { padding: 1rem .6rem; } .sound-label, .fullscreen-label { display: none; }
  .topbar-actions { gap: .35rem; }
  .game-board { gap: .38rem; } .card-copy { padding: .35rem; min-height: 3.4rem; }
  .stats { gap: .35rem; } .stats div { min-width: 3.8rem; } .stats strong { font-size: 1.1rem; }
  .player-names { grid-template-columns: 1fr; }
  .versus-scoreboard { grid-template-columns: 1fr 1fr; }
  .versus-scoreboard > p { grid-column: 1/-1; grid-row: 1; border-bottom: 1px solid var(--line); }
  .toolbar-actions .button { font-size: .75rem; } .secondary-actions { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .profile { grid-template-columns: 4.5rem 4.5rem 1fr; }
  .end-stats { grid-template-columns: 1fr; } .end-stats div + div { border-top: 1px solid var(--line); }
  footer { gap: .8rem; }
  .fullscreen-hint { bottom: .5rem; align-items: stretch; flex-direction: column; padding: .75rem 3rem .75rem .8rem; }
  .fullscreen-hint .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto!important; animation-duration: .01ms!important; animation-iteration-count: 1!important; transition-duration: .01ms!important; }
}