@font-face {
  font-family: 'QuicksandCustom';
  src: url('./Quicksand-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
}

:root {
  --board: 400px;
  --arena: 450px;
  --grid: 2;
  --piece: calc(var(--board) / var(--grid));
  --radius: 18px;
  --board-top: 90px;
  --board-wrap-height: 500px;
  --canvas-border: #6e8fbe;
  --panel-blue: #1596f0;
  --title-blue: #2551d8;
  --warm-yellow: #fff4a5;
  --warm-yellow-deep: #f0b31d;
  --progress-track: #d9dde4;
  --progress-fill: #ff7112;
  --badge-bg: #f9dddd;
  --badge-text: #c3322f;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'QuicksandCustom', 'Trebuchet MS', sans-serif;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-height: 100vh;
  padding: clamp(10px, 2vw, 24px);
  position: relative;
  background: none;
  overflow-x: hidden;
}

body.no-scroll {
  overflow: hidden;
}

.game-root {
  position: relative;
  width: 100%;
  min-height: 100vh;
}

#gameApp {
  min-height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
}

.bg-video {
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: -3;
  object-fit: cover;
}

.bg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.18);
  z-index: -2;
  pointer-events: none;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(181, 222, 165, 0.62),
    rgba(240, 241, 171, 0.56),
    rgba(255, 248, 194, 0.4)
  );
  z-index: -1;
}

.landing {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
#fullscreenBtn{
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.9);
  color: #1f2a5f;
  border: none;
  border-radius: 14px;
  padding: 0;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(0,0,0,0.25);
  transition: transform 0.15s ease, background 0.15s ease;
}

#fullscreenBtn.is-active{
  background: rgba(31, 42, 95, 0.92);
  color: #ffffff;
}

#fullscreenBtn:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,0.98);
}

#fullscreenBtn.is-active:hover{
  background: rgba(31, 42, 95, 0.98);
}

/* ✅ iOS fallback fullscreen (FAKE) */
#game-root.fake-fullscreen{
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 999999;
}

#game-root.fake-fullscreen .app,
#game-root:fullscreen .app,
#game-root:-webkit-full-screen .app {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
}

.start-screen {
  width: min(90vw, 520px);
  text-align: center;
  padding: 36px 40px;
  border-radius: 28px;

  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(14px);

  border: 2px solid rgba(110, 143, 190, 0.35);

  box-shadow:
    0 30px 60px rgba(0,0,0,0.15),
    inset 0 0 0 1px rgba(255,255,255,0.4);
}
.start-screen {
  animation: cardEntry 0.5s ease-out;
}

@keyframes cardEntry {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.2), transparent 40%),
              radial-gradient(circle at 80% 70%, rgba(255,255,255,0.15), transparent 40%);
  animation: floatBg 20s linear infinite;
  z-index: -1;
}

@keyframes floatBg {
  0% { transform: translate(0,0); }
  100% { transform: translate(-60px,-60px); }
}

.logo {
  max-width: 300px;
  margin: 0 auto 20px;
  padding: 12px;

  background: linear-gradient(180deg, #fff9bd, #fff3a0);
  border-radius: 20px;

  box-shadow:
    0 10px 25px rgba(240, 179, 29, 0.25),
    inset 0 2px 4px rgba(255,255,255,0.6);
}
.logo:hover {
  transform: scale(1.03);
  transition: transform 0.2s ease;
}

.game-title {
  font-size: 46px;
  font-weight: 700;
  color: var(--title-blue);
  letter-spacing: 0.5px;

  text-shadow:
    0 2px 0 rgba(255,255,255,0.6),
    0 6px 18px rgba(37, 81, 216, 0.25);
}

.subtitle {
  margin: 12px 0 30px;
  font-size: 18px;
  color: #5c6f82;
  letter-spacing: 0.3px;
}

.play-btn,
button,
.btn {
  appearance: none;
  border: 2px solid var(--warm-yellow-deep);
  border-radius: 999px;
  background: linear-gradient(180deg, #fff7bc 0%, #ffea7d 100%);
  color: var(--title-blue);
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}

.play-btn {
  padding: 16px 40px;
  font-size: 20px;
  border-radius: 999px;

  background: linear-gradient(180deg, #fff7bc 0%, #ffd84d 100%);
  color: var(--title-blue);

  border: 2px solid #f0b31d;

  box-shadow:
    0 12px 28px rgba(240, 179, 29, 0.35),
    inset 0 2px 4px rgba(255,255,255,0.6);

  transition: all 0.18s ease;
}

button,
.btn {
  padding: 8px 16px;
  font-size: 14px;
  box-shadow: 0 8px 18px rgba(240, 179, 29, 0.2);
}

.play-btn:hover,
button:hover,
.btn:hover {
  transform: translateY(-2px) scale(1.03);
}

.btn.primary {
  background: linear-gradient(180deg, #fff7bc 0%, #ffea7d 100%);
  color: var(--title-blue);
}

.btn.secondary {
  background: linear-gradient(180deg, #dbeafe 0%, #93c5fd 100%);
  border-color: #60a5fa;
  color: #0b3b8c;
}

.app {
  width: min(100%, 760px);
  margin: 0 auto;
}

.card {
  width: 100%;
  max-width: 700px;
  min-height: auto;
  padding: clamp(8px, 1.5vw, 14px);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(110, 143, 190, 0.35);
  box-shadow:
    0 18px 40px rgba(52, 81, 120, 0.12),
    inset 0 0 0 2px rgba(255, 255, 255, 0.36);
  display: flex;
  flex-direction: column;
  gap: clamp(10px, 2vw, 18px);
  overflow: visible;
}

.topPanel {
  width: min(100%, 520px);
  margin: 0 auto;
  border: 3px solid var(--panel-blue);
  border-radius: 22px;
  padding: clamp(10px, 2vw, 14px) clamp(12px, 2.5vw, 18px);
  background: #ffffff;
}

.header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 10px;
}

.title {
  font-size: clamp(15px, 2.4vw, 18px);
  font-weight: 700;
  color: var(--title-blue);
}

.letterBadge {
  display: none !important;
}

.controls,
.tray {
  display: none;
}

.status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.badge {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  white-space: nowrap;
}

.progressBar {
  flex: 1;
  min-width: min(260px, 100%);
  height: 12px;
  background: var(--progress-track);
  border-radius: 999px;
  overflow: hidden;
}

.progressBar > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--progress-fill) 0%, #ff7e1c 100%);
}

.boardWrap {
  position: relative;
  width: min(100%, calc(var(--board) + 42px));
  height: var(--board-wrap-height);
  min-height: var(--board-wrap-height);
  margin: 0 auto;
  padding: 8px;
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.95),
    rgba(240,248,255,0.9)
  );  border: 3px solid rgba(120, 157, 206, 0.55);
  border-radius: 26px;
  box-shadow:
    0 25px 50px rgba(0,0,0,0.12),
    inset 0 0 0 6px rgba(255,255,255,0.7);
}

.arena {
  position: relative;
  width: 100%;
  height: 100%;
  background: #ffffff;
  border-radius: 20px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 6px;
}

.puzzleStage {
  position: relative;
  width: var(--board);
  height: calc(var(--board) + var(--board-top));
  margin-top: -5px;
}

.pieceLayer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0;
  transition: opacity .25s ease;
}

.pieceLayer.active {
  opacity: 1;
}

.overlayWin {
  z-index: 50;
}

.board,
.grid,
.hint {
  position: absolute;
  width: var(--board);
  height: var(--board);
  left: 0;
  transform: none;
}

.board {
  top: var(--board-top);
  overflow: hidden;
  border: 4px solid #f2c62e;
  border-radius: var(--radius);
  background: #ffffff;
  box-sizing: content-box;
  z-index: 3;
  box-shadow: 0 10px 24px rgba(46, 70, 110, 0.08);
}

.grid,
.hint {
  top: var(--board-top);
}

.cell {
  border-radius: 14px;
  border: 2px dashed rgba(80, 180, 255, 0.35);
  background: rgba(255,255,255,0.4);
  transition: all 0.25s ease;
  background: transparent;
}
.cell.active {
  border-color: #ff9800;
  background: rgba(255, 200, 0, 0.15);
}

.hint {
  opacity: .18;
  pointer-events: none;
  overflow: hidden;
  border-radius: var(--radius);
}

.hint img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.completeReveal {
  position: absolute;
  width: var(--board);
  height: var(--board);
  top: var(--board-top);
  left: 0;
  transform: none;
  border-radius: var(--radius);
  overflow: hidden;
  z-index: 8;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease;
}

.completeReveal.show {
  opacity: 1;
}

.completeReveal img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.completeReveal::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255,255,255,0.12), rgba(255,255,255,0));
}

.completeShine {
  position: absolute;
  inset: -20%;
  background: linear-gradient(115deg, transparent 32%, rgba(255,255,255,0.15) 42%, rgba(255,255,255,0.88) 50%, rgba(255,255,255,0.15) 58%, transparent 68%);
  transform: translateX(-120%) rotate(8deg);
  opacity: 0;
}

.completeReveal.show .completeShine {
  opacity: 1;
  animation: revealShine 1.2s ease-out forwards;
}

.completeSparkles {
  position: absolute;
  inset: 0;
}

.completeSparkles i {
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.98) 0 22%, rgba(255,231,122,0.95) 23% 42%, rgba(255,255,255,0) 43%);
  filter: drop-shadow(0 0 8px rgba(255, 240, 148, 0.8));
  opacity: 0;
}

.completeReveal.show .completeSparkles i {
  animation: sparklePop 900ms ease-out forwards;
}

@keyframes revealShine {
  0% {
    transform: translateX(-120%) rotate(8deg);
  }
  100% {
    transform: translateX(120%) rotate(8deg);
  }
}

@keyframes sparklePop {
  0% {
    opacity: 0;
    transform: scale(.2);
  }
  25% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(1.4);
  }
}

.piece {
  position: absolute;
  width: var(--piece);
  height: var(--piece);
  border: 2px solid #f2c62e;
  border-radius: 4px;
  background-color: #ffffff;
  background-size: var(--board) var(--board);
  background-repeat: no-repeat;
  touch-action: none;
  cursor: grab;
  user-select: none;
  transition: transform .06s ease, box-shadow .06s ease;
}
.piece.dragging {
  transform: scale(1.08) rotate(1deg);
  box-shadow: 0 18px 35px rgba(0,0,0,0.25);
}

.piece.wrong {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.35);
  animation: wrongWiggle .45s ease;
}

@keyframes wrongWiggle {
  0% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-4px); }
  100% { transform: translateX(0); }
}

.piece.dragging {
  opacity: .97;
  cursor: grabbing;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.18);
  z-index: 30;
}

.piece.lock {
  border-color: #25c260;
  box-shadow: none;
}

.piece.joinPop {
  animation: joinPop .28s ease-out;
}

@keyframes joinPop {
  0% { transform: scale(.88); }
  60% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.apparition {
  animation: apparition .28s ease-out;
}

@keyframes apparition {
  0% { opacity: 0; transform: translate(-50%, -50%) scale(.96); }
  100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.overlayWin {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.overlayWin.show {
  display: flex;
  animation: overlayPop .24s ease-out;
}

@keyframes overlayPop {
  0% { opacity: 0; transform: scale(.96); }
  100% { opacity: 1; transform: scale(1); }
}

.winCard {
  width: min(300px, 92%);
  display: grid;
  gap: 10px;
  padding: 18px;
  text-align: center;
  background: #ffffff;
  border: 3px solid var(--canvas-border);
  border-radius: 20px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.2);
}

.winActions {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 4px;
}

.confettiLayer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 99998;
  overflow: hidden;
}

.confetti {
  position: absolute;
  top: -12px;
  width: 10px;
  height: 14px;
  border-radius: 3px;
  background: currentColor;
  color: hsl(calc(360 * var(--h, 0.5)), 80%, 60%);
  animation: fall 3.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.confettiLayer .confetti:nth-child(4n+1){ color:#22c55e; }
.confettiLayer .confetti:nth-child(4n+2){ color:#3b82f6; }
.confettiLayer .confetti:nth-child(4n+3){ color:#f59e0b; }
.confettiLayer .confetti:nth-child(4n){ color:#ec4899; }

@keyframes fall {
  0% {
    transform: translateY(-20px) translateX(0) rotate(0deg);
    opacity: 0;
  }

  20% {
    opacity: 1;
  }

  50% {
    transform: translateY(105vh) translateX(calc(var(--drift) * 0.5)) rotate(180deg);
  }

  100% {
    transform:
      translateY(190vh)
      translateX(var(--drift))
      rotate(var(--rotate));
    opacity: 0;
  }
}

.burstEffect {
  --burstScale: 1;
  position: fixed;
  width: 220px;
  height: 220px;
  left: 0;
  top: 0;
  pointer-events: none;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0) 60%),
    conic-gradient(from 0deg, #f97316, #facc15, #22c55e, #3b82f6, #a855f7, #f97316);
  mix-blend-mode: screen;
  opacity: 0.9;
  filter: blur(1px);
  transform: translate(-50%, -50%) scale(var(--burstScale)) rotate(0deg);
  animation: burstAnim 0.6s ease-out forwards;
  z-index: 2000;
}

@keyframes burstAnim {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(calc(var(--burstScale) * 0.3)) rotate(0deg);
  }
  40% {
    opacity: 0.95;
    transform: translate(-50%, -50%) scale(var(--burstScale)) rotate(45deg);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(calc(var(--burstScale) * 1.4)) rotate(90deg);
  }
}

.letterSubtitle {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px clamp(14px, 3vw, 28px);
  border: 2px solid var(--warm-yellow-deep);
  border-radius: 999px;
  background: linear-gradient(180deg, #fff8bb 0%, #fff08d 100%);
  box-shadow: 
    0 8px 18px rgba(240, 179, 29, 0.3),
    inset 0 2px 4px rgba(255,255,255,0.6);
  color: var(--title-blue);
  font-size: clamp(13px, 2.5vw, 20px);
  font-weight: 700;
  letter-spacing: 0.2px;
  text-align: center;
  white-space: nowrap;
  z-index: 5;
  opacity: 0;
  transition: opacity .25s ease, transform .25s ease;
}
button:active,
.play-btn:active {
  transform: scale(0.95);
  box-shadow:
    0 6px 14px rgba(240, 179, 29, 0.25),
    inset 0 3px 6px rgba(0,0,0,0.15);
}

.letterSubtitle.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }

  .start-screen {
    width: min(92vw, 360px);
    padding: 24px 18px 28px;
  }

  .logo {
    width: 100%;
    max-width: 220px;
    display: block;
    margin: 0 auto 18px;
    padding: 10px;
  }

  .game-title {
    font-size: 34px;
  }

  .subtitle {
    font-size: 16px;
    margin: 10px 0 24px;
  }

  .play-btn {
    width: min(100%, 220px);
    padding: 14px 24px;
    font-size: 18px;
  }

  .card {
    max-width: 100%;
    padding: 10px;
  }

  .topPanel {
    width: 100%;
    padding: 12px 14px;
  }

  .header,
  .status {
    gap: 10px;
  }

  .title,
  .letterSubtitle {
    font-size: 16px;
  }

  .boardWrap {
    width: 100%;
    max-width: calc(var(--board) + 26px);
    padding: 6px;
  }

  .arena {
    padding-top: 14px;
  }

  .letterSubtitle {
    padding: 8px 18px;
    max-width: calc(100% - 16px);
  }
}

@media (max-width: 1024px) and (min-width: 769px) {
  .card {
    max-width: 680px;
  }

  .boardWrap {
    width: min(100%, calc(var(--board) + 32px));
  }
}

@media (min-width: 1200px) {
  body {
    align-items: center;
    padding: 18px;
  }

  .app {
    display: flex;
    justify-content: center;
  }

  .card {
    max-width: 640px;
    margin: 0 auto;
    min-height: auto;
    padding: 12px 16px 14px;
  }

  .topPanel {
    width: min(100%, 480px);
  }

  .boardWrap {
    width: min(100%, calc(var(--board) + 28px));
    margin: 0 auto;
  }
}

@media (max-width: 480px) {
  .topPanel {
    border-radius: 18px;
  }

  .badge {
    font-size: 12px;
    padding: 7px 12px;
  }

  .progressBar {
    min-width: 100%;
  }

  .winCard {
    width: min(280px, 92%);
    padding: 16px;
  }
}
/*scroll off*/
html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

body {
  position: fixed;
  inset: 0;
  overscroll-behavior: none;
}