/* GAME CARDS + GAME MODAL */
.game-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.game-card {
  min-height: 280px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 28px 28px 70px;
  position: relative;
  cursor: pointer;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.game-card:hover, .game-card:focus-within {
  transform: translateY(-5px);
  border-color: var(--accent);
  box-shadow: 0 20px 40px #0008;
}
.game-card.featured { background: linear-gradient(145deg, #17120c, #0c0e10); }
.game-icon {
  width: 84px;
  height: 84px;
  margin: 8px auto 0;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: #0a0c0f;
  color: #c9cfd5;
  transition: border-color .25s, color .25s;
}
.game-icon svg { width: 48px; height: 48px; }
.game-icon .accent { stroke: var(--accent); }
.game-icon .accent-fill { fill: var(--accent); stroke: none; }
.game-icon .lit { fill: var(--accent); stroke: var(--accent); }
.game-icon .on-lit { stroke: #fff; }
.game-card:hover .game-icon { border-color: var(--accent); color: var(--text); }
.game-number { position: absolute; right: 25px; top: 27px; color: #7a838d; font-size: 11px; }
.game-card h3 { font-family: var(--font-display); font-size: 30px; margin: 22px 0 8px; }
.game-card p { color: var(--muted); font-size: 14px; max-width: 250px; margin: 0; }
.game-best { margin-top: 14px; font-size: 11px; letter-spacing: .12em; color: var(--accent-soft); text-transform: uppercase; }
.game-best:empty { display: none; }
.game-launch {
  position: absolute;
  bottom: 25px;
  left: 28px;
  background: none;
  border: 0;
  color: var(--accent);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  padding: 0;
}
.game-launch span { display: inline-block; transition: transform .2s; }
.game-card:hover .game-launch span { transform: translateX(4px); }

/* Modal */
.game-modal {
  position: fixed;
  inset: 0;
  background: #000b;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: none;
  place-items: center;
  z-index: 50;
  padding: 20px;
}
.game-modal.open { display: grid; animation: fade-in .2s ease-out; }
.game-modal.open .game-modal-panel { animation: pop-in .25s ease-out; }
.game-modal-panel {
  width: min(620px, 100%);
  max-height: calc(100vh - 40px);
  overflow-y: auto;
  background: #0b0e11;
  border: 1px solid var(--line-strong);
  padding: 34px;
  position: relative;
}
@keyframes fade-in { from { opacity: 0; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(14px) scale(.98); } }
.modal-close {
  position: absolute;
  right: 12px;
  top: 10px;
  width: 44px;
  height: 44px;
  background: none;
  border: 0;
  color: #9ba4ae;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
}
.modal-close:hover { color: var(--text); }

/* Shared game UI */
.game-title { font-family: var(--font-display); font-size: 42px; margin: 18px 0 10px; }
.game-sub { color: var(--muted); font-size: 14px; margin: 0; }
.play-stage { text-align: center; padding: 10px 0; }
.score-line { display: flex; justify-content: center; gap: 35px; margin: 24px 0; color: #8d969f; font-size: 11px; letter-spacing: .12em; text-align: center; }
.score-line strong { display: block; color: #fff; font-size: 25px; letter-spacing: 0; }
.result { margin-top: 18px; color: var(--accent); min-height: 24px; text-align: center; font-weight: 600; }
.result.good { color: var(--good); }
.result.bad { color: var(--bad); }

.big-button {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 1px solid #4a545e;
  background: #151a1e;
  color: var(--text);
  font-weight: 700;
  letter-spacing: .1em;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s;
  touch-action: manipulation;
}
.big-button:active { transform: scale(.97); }
.big-button.waiting { background: #2a1a10; border-color: var(--accent); color: var(--accent-soft); }
.big-button.ready { background: var(--good); color: #fff; border-color: var(--good); box-shadow: 0 0 40px #27c46b66; }

.memory-board { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; max-width: 360px; margin: 20px auto; }
.memory-cell {
  aspect-ratio: 1;
  background: #151a1e;
  border: 1px solid #2d353d;
  cursor: pointer;
  transition: background .12s, box-shadow .12s;
  touch-action: manipulation;
}
.memory-board:not(.locked) .memory-cell:hover { border-color: #4a545e; }
.memory-board.locked .memory-cell { cursor: default; }
.memory-cell.lit { background: var(--accent); box-shadow: 0 0 20px #e77b0066; }
.memory-cell.wrong { background: var(--bad); }

.number-box { text-align: center; }
.equation { font-family: var(--font-display); font-size: 55px; margin: 20px; }
.answer-row { display: flex; gap: 8px; justify-content: center; }
.answer-row input { background: #11151a; border: 1px solid var(--line-strong); color: #fff; padding: 13px; width: 140px; font-size: 18px; }
.answer-row input:focus { border-color: var(--accent); outline: none; }
.answer-row button, .restart {
  background: var(--accent);
  border: 0;
  padding: 13px 22px;
  color: var(--on-accent);
  font-weight: 700;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.answer-row button:hover, .restart:hover { background: var(--accent-soft); color: #111; }
.restart { display: block; margin: 16px auto 0; }
.restart:disabled { opacity: .4; cursor: default; background: var(--accent); color: var(--on-accent); }

/* Post-game leaderboard submit */
.submit-score {
  margin: 22px auto 0;
  max-width: 420px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 13px;
  color: var(--muted);
  text-align: left;
}
.submit-score strong { color: var(--text); }
.submit-btn { background: var(--accent); border: 0; color: var(--on-accent); font-weight: 700; padding: 11px 16px; cursor: pointer; white-space: nowrap; }
.submit-btn:hover { background: var(--accent-soft); color: #111; }
.submit-msg { font-size: 13px; color: var(--muted); }
.submit-msg.good { color: var(--good); }
.submit-msg.bad { color: var(--bad); }

/* Sign in / create account dialog */
.auth-modal { z-index: 60; }
.auth-panel { width: min(440px, 100%); min-height: 0; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; margin: 22px 0 18px; border: 1px solid var(--line-strong); }
.auth-tabs button { background: none; border: 0; color: var(--muted); padding: 12px; font-weight: 700; font-size: 13px; cursor: pointer; }
.auth-tabs button[aria-selected="true"] { background: var(--accent); color: var(--on-accent); }
.auth-reason { color: var(--accent-soft); font-size: 13px; margin: 0 0 14px; }
.auth-form { display: grid; gap: 8px; }
.auth-form label { display: grid; gap: 6px; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-top: 6px; }
.auth-form input { background: #11151a; border: 1px solid var(--line-strong); color: var(--text); padding: 12px; font-size: 15px; letter-spacing: 0; text-transform: none; }
.auth-form input:focus { border-color: var(--accent); outline: none; }
.auth-form input.invalid { border-color: var(--bad); }
.auth-hint { margin: 0; font-size: 12px; color: #6d7680; }
.auth-error { min-height: 20px; color: var(--bad); font-size: 13px; font-weight: 600; margin-top: 6px; }
.auth-submit { justify-content: center; cursor: pointer; font-size: 14px; }
.auth-submit:disabled { opacity: .6; cursor: default; }
.link-btn { background: none; border: 0; padding: 0; color: var(--accent); font-weight: 700; cursor: pointer; text-decoration: underline; }

/* GAME LAB ARCADE BACKGROUND (built by js/lab-bg.js) */
.games-section { position: relative; overflow: hidden; isolation: isolate; }
.games-section > :not(.lab-bg) { position: relative; z-index: 1; }
.lab-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }

.lab-grid {
  position: absolute;
  inset: 0;
  overflow: hidden;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 50%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 50%, #000 20%, transparent 80%);
}
.lab-grid::before {
  content: "";
  position: absolute;
  inset: -32px 0 0 -32px;
  background:
    linear-gradient(#e77b000d 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, #e77b000d 1px, transparent 1px) 0 0 / 32px 32px;
  animation: lab-grid-scroll 12s linear infinite;
  will-change: transform;
}
@keyframes lab-grid-scroll { to { transform: translate(32px, 32px); } }

.lab-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .22; }
.lab-glow-a { width: 420px; height: 420px; left: -120px; top: 10%; background: var(--accent); animation: lab-drift 14s ease-in-out infinite; }
.lab-glow-b { width: 360px; height: 360px; right: -100px; bottom: 0; background: #6b3cff; opacity: .12; animation: lab-drift 18s ease-in-out infinite reverse; }
@keyframes lab-drift { 50% { transform: translate(60px, -40px) scale(1.1); } }

.lab-scanlines {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: repeating-linear-gradient(to bottom, transparent 0 3px, #0000002e 3px 4px);
  opacity: .5;
}
.lab-scanlines::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 200%;
  background: linear-gradient(to bottom, transparent 45%, #e77b000f 50%, transparent 55%);
  animation: lab-sweep 7s linear infinite;
  will-change: transform;
}
@keyframes lab-sweep { from { transform: translateY(-50%); } to { transform: translateY(50%); } }

.lab-pixel {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 4px;
  height: 4px;
  background: var(--accent-soft);
  box-shadow: 0 0 6px var(--accent);
  animation: lab-twinkle var(--dur) steps(2, jump-none) infinite var(--delay);
}
@keyframes lab-twinkle { 0%, 100% { opacity: 0; } 50% { opacity: .8; } }

.lab-corner { position: absolute; width: 28px; height: 28px; border: 0 solid #e77b0066; }
.lab-corner.tl { top: 24px; left: 24px; border-top-width: 2px; border-left-width: 2px; }
.lab-corner.tr { top: 24px; right: 24px; border-top-width: 2px; border-right-width: 2px; }
.lab-corner.bl { bottom: 24px; left: 24px; border-bottom-width: 2px; border-left-width: 2px; }
.lab-corner.br { bottom: 24px; right: 24px; border-bottom-width: 2px; border-right-width: 2px; }

/* Cards sit on the arcade layer: slightly translucent with a shine sweep on hover. */
.games-section .game-card { background: #0d1014e6; backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); overflow: hidden; }
.games-section .game-card.featured { background: linear-gradient(145deg, #17120ce6, #0c0e10e6); }
.game-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, #ffffff10, transparent);
  transform: translateX(-220%) skewX(-20deg); /* far enough left that the skewed top edge stays hidden */
  pointer-events: none;
}
.game-card:hover::before { animation: card-shine .8s ease-out; }
@keyframes card-shine { to { transform: translateX(330%) skewX(-20deg); } }

@media (max-width: 800px) {
  .lab-corner { display: none; }
}

/* Player badge on game screens */
.game-modal-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding-right: 44px; flex-wrap: wrap; }
.player-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px 4px 4px;
  border: 1px solid #e77b0066;
  background: #e77b0012;
  font-size: 13px;
  max-width: 100%;
  animation: pop-in .25s ease-out;
}
.player-tag .avatar { width: 26px; height: 26px; display: grid; place-items: center; background: var(--accent); color: var(--on-accent); font-weight: 700; font-size: 12px; flex: none; }
.player-tag .player-label { font-size: 10px; letter-spacing: .14em; color: var(--accent-soft); font-weight: 700; }
.player-tag strong { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.player-tag.guest { border-color: var(--line-strong); background: none; }
.player-tag.guest .avatar { background: #2a3038; color: var(--muted); }
.player-tag.guest .player-label { color: var(--muted); }
.player-tag .link-btn { font-size: 12px; margin-left: 4px; }