:root {
  color-scheme: dark;
  --ink: #17191d;
  --panel: rgba(24, 27, 32, .94);
  --panel-2: rgba(37, 40, 46, .94);
  --text: #f5f0e8;
  --muted: #c8c3bb;
  --accent: #d8b06a;
  --accent-2: #f1d69c;
  --board-border: #e0c38c;
  --finished-width: 1040px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
}

html {
  background: #d8d4cd;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse at 18% 12%, rgba(255,255,255,.92) 0 7%, transparent 19%),
    radial-gradient(ellipse at 83% 76%, rgba(255,255,255,.5) 0 5%, transparent 18%),
    repeating-linear-gradient(118deg, transparent 0 42px, rgba(97,102,109,.11) 43px 45px, transparent 46px 102px),
    repeating-linear-gradient(24deg, transparent 0 88px, rgba(255,255,255,.24) 89px 92px, transparent 93px 168px),
    linear-gradient(135deg, #ece9e3 0%, #cfcac2 42%, #e5e1da 70%, #c5c1bb 100%);
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .52;
  background:
    linear-gradient(104deg, transparent 0 27%, rgba(105,108,115,.18) 27.4%, transparent 28.1% 63%, rgba(91,95,103,.14) 63.4%, transparent 64.2%),
    linear-gradient(13deg, transparent 0 51%, rgba(255,255,255,.36) 51.4%, transparent 52%);
  mix-blend-mode: multiply;
}

button, input { font: inherit; }

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1320px, calc(100% - 24px));
  margin: 0 auto;
  padding: 18px 0 38px;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(300px, auto);
  gap: 18px;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 15px;
  background: linear-gradient(180deg, rgba(43,46,52,.96), rgba(21,23,28,.97));
  box-shadow: 0 12px 34px rgba(25,27,31,.28), inset 0 1px 0 rgba(255,255,255,.05);
}

h1 { margin: 0; font-size: clamp(1.45rem, 2.6vw, 2.15rem); letter-spacing: .015em; }
.topbar p { margin: 3px 0 0; color: var(--muted); font-size: .95rem; }

.hud { display: flex; gap: 9px; }
.stat {
  min-width: 100px;
  padding: 8px 11px;
  text-align: center;
  border-radius: 10px;
  background: rgba(0,0,0,.22);
  border: 1px solid rgba(255,255,255,.08);
}
.stat .label { display: block; margin-bottom: 3px; color: var(--muted); font-size: .66rem; letter-spacing: .14em; }
.stat strong { font-variant-numeric: tabular-nums; font-size: 1.05rem; }

.top-actions { display: grid; justify-items: end; gap: 8px; }
.controls { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.controls button,
.completion-panel button,
.size-options button,
.music-toggle {
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 9px;
  padding: 9px 13px;
  color: #211b12;
  background: linear-gradient(#f1d59d, #d3a85e);
  cursor: pointer;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.42), 0 4px 12px rgba(0,0,0,.18);
}
.controls button:hover,
.completion-panel button:hover,
.size-options button:hover,
.music-toggle:hover { filter: brightness(1.06); }
button:disabled { opacity: .45; cursor: default; filter: none !important; }

.music-control {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 8px;
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 10px;
  background: rgba(0,0,0,.17);
}
.music-toggle { min-width: 92px; padding: 7px 10px; }
.music-toggle[aria-pressed="false"] { background: rgba(255,255,255,.09); color: var(--text); }
.volume-control { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .78rem; }
.volume-control input { width: 112px; accent-color: var(--accent); cursor: pointer; }

.game-wrap { margin-top: 16px; overflow-x: auto; padding: 6px 6px 18px; }
.game-area {
  position: relative;
  margin: 0 auto;
  min-width: 760px;
  user-select: none;
  touch-action: none;
  transition: opacity .22s ease, transform .22s ease;
}
.game-area.finishing { opacity: 0; transform: scale(1.018); }

.board {
  position: absolute;
  left: 0;
  top: 0;
  overflow: hidden;
  border: 3px solid var(--board-border);
  border-radius: 8px;
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    #1b1d20;
  box-shadow: 0 14px 36px rgba(24,27,31,.35), inset 0 0 0 1px rgba(0,0,0,.65);
}
.board::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: rgba(255,255,255,.014); }

.tray-label { position: absolute; left: 4px; font-size: .88rem; color: #53565c; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; text-shadow: 0 1px rgba(255,255,255,.4); }
.tray-backdrop {
  position: absolute;
  left: 0;
  border-radius: 12px;
  background:
    radial-gradient(circle at 25% 15%, rgba(255,255,255,.05), transparent 34%),
    rgba(31,33,38,.89);
  border: 1px solid rgba(255,255,255,.13);
  box-shadow: 0 8px 24px rgba(47,49,54,.18), inset 0 1px 18px rgba(0,0,0,.25);
}

.piece {
  position: absolute;
  overflow: visible;
  cursor: grab;
  filter: drop-shadow(0 3px 3px rgba(0,0,0,.43));
  touch-action: none;
  z-index: 5;
}
.piece.dragging { cursor: grabbing; z-index: 1000 !important; filter: drop-shadow(0 8px 9px rgba(0,0,0,.55)); }
.piece.locked { cursor: default; filter: none; z-index: 2 !important; }
.piece path.piece-outline {
  fill: none;
  stroke: rgba(255,255,255,.28);
  stroke-width: 1.05;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
}

.preview-image {
  position: fixed;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) scale(.94);
  width: min(88vw, 1100px);
  max-height: 86vh;
  object-fit: contain;
  z-index: 4000;
  border: 4px solid #e7c67f;
  border-radius: 10px;
  box-shadow: 0 18px 70px rgba(0,0,0,.58);
  opacity: 0;
  visibility: hidden;
  transition: opacity .15s ease, transform .15s ease, visibility .15s;
  pointer-events: none;
}
.preview-image.show { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }

.completion-stage {
  width: min(1300px, 100%);
  margin: 20px auto 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .28s ease, transform .28s ease;
}
.completion-stage[hidden] { display: none; }
.completion-stage.show { opacity: 1; transform: translateY(0); }
.finished-picture-wrap {
  width: min(var(--finished-width), calc(100% - 270px));
  transform: scale(.985);
  transform-origin: center;
  animation: finishedZoom .55s ease forwards;
}
.finished-picture {
  display: block;
  width: 100%;
  height: auto;
  border: 3px solid var(--board-border);
  border-radius: 9px;
  box-shadow: 0 18px 48px rgba(35,37,42,.33);
}
@keyframes finishedZoom { to { transform: scale(1.025); } }

.completion-panel {
  flex: 0 0 230px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(43,46,52,.98), rgba(21,23,28,.98));
  box-shadow: 0 14px 34px rgba(27,29,33,.30);
}
.completion-panel h2 { margin: 0 0 14px; font-size: 1.35rem; }
.completed-puzzle-name {
  margin: -2px 0 12px;
  color: var(--accent-2);
  font-size: .95rem;
  letter-spacing: .04em;
}

#sizeSceneName {
  margin-bottom: 8px;
  color: var(--accent-2);
  font-size: 1rem;
}

.completion-stat { display: flex; justify-content: space-between; gap: 14px; padding: 9px 0; border-top: 1px solid rgba(255,255,255,.08); color: var(--muted); }
.completion-stat strong { color: var(--text); font-variant-numeric: tabular-nums; }
.completion-panel button { width: 100%; margin-top: 9px; }
.completion-panel button.secondary { background: rgba(255,255,255,.08); color: var(--text); }

.size-overlay {
  position: fixed;
  inset: 0;
  z-index: 6000;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(28,30,34,.72);
  backdrop-filter: blur(6px);
}
.size-overlay[hidden] { display: none; }
.size-card {
  width: min(920px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  padding: 30px;
  text-align: center;
  border: 2px solid #dfbf80;
  border-radius: 17px;
  background: linear-gradient(180deg, #35383e, #1e2025);
  box-shadow: 0 22px 60px rgba(0,0,0,.42);
}
.size-brand { margin-bottom: 13px; color: var(--accent-2); font-size: 1.05rem; letter-spacing: .05em; text-transform: uppercase; }
.size-card h2 { margin: 0 0 18px; font-size: 2rem; }
.size-card p { margin: 0 0 20px; color: var(--muted); }
.size-card .music-note { margin: 18px 0 0; font-size: .8rem; }
.picker-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 26px; text-align: left; }
.picker-label { margin: 0 0 10px; color: var(--accent-2); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 700; }
.picker-sizes { border-left: 1px solid rgba(255,255,255,.12); padding-left: 26px; }
.picker-sizes #sizeSceneName { margin: 0 0 16px; color: var(--text); font-weight: 700; }
.puzzle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 9px;
  max-height: 420px;
  overflow-y: auto;
  padding-right: 4px;
}
.puzzle-thumb {
  position: relative;
  padding: 0;
  border: 2px solid rgba(255,255,255,.14);
  border-radius: 9px;
  overflow: hidden;
  cursor: pointer;
  background: #16181c;
  aspect-ratio: 16 / 9;
  box-shadow: 0 4px 12px rgba(0,0,0,.18);
}
.puzzle-thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.puzzle-thumb:hover { border-color: rgba(223,191,128,.55); }
.puzzle-thumb.selected { border-color: #dfbf80; box-shadow: 0 0 0 2px rgba(223,191,128,.5), 0 4px 12px rgba(0,0,0,.28); }
.puzzle-thumb .thumb-name {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 4px 6px;
  font-size: .62rem;
  line-height: 1.2;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(0deg, rgba(0,0,0,.78), rgba(0,0,0,0));
}
.puzzle-thumb .thumb-check {
  position: absolute; top: 5px; right: 5px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: #dfbf80;
  color: #211b12;
  font-size: .68rem;
  font-weight: 900;
  display: none;
  align-items: center;
  justify-content: center;
}
.puzzle-thumb.selected .thumb-check { display: flex; }
.size-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.size-options button:last-child { grid-column: 1 / -1; }
.size-options button { padding: 14px 8px; font-size: 1.08rem; }
.load-error { padding: 2rem; color: #2b2d32; }

.game-area, .piece, .piece image, .finished-picture, .preview-image {
  -webkit-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
}

@media (max-width: 1120px) {
  .topbar { grid-template-columns: 1fr auto; }
  .top-actions { grid-column: 1 / -1; width: 100%; grid-template-columns: 1fr auto; align-items: center; }
  .music-control { justify-self: start; }
}

@media (max-width: 780px) {
  .topbar { grid-template-columns: 1fr; }
  .hud { justify-content: flex-start; flex-wrap: wrap; }
  .top-actions { grid-template-columns: 1fr; justify-items: stretch; }
  .music-control { justify-self: stretch; justify-content: space-between; }
  .controls { justify-content: flex-start; }
  .completion-stage { flex-direction: column; align-items: stretch; }
  .finished-picture-wrap { width: 100%; }
  .completion-panel { flex-basis: auto; width: min(440px, 100%); margin: 0 auto; }
  .picker-grid { grid-template-columns: 1fr; }
  .picker-sizes { border-left: none; padding-left: 0; border-top: 1px solid rgba(255,255,255,.12); padding-top: 20px; margin-top: 20px; }
  .puzzle-grid { grid-template-columns: repeat(3, 1fr); max-height: 280px; }
  .size-options { grid-template-columns: repeat(2, 1fr); }
  .size-options button:last-child { grid-column: 1 / -1; }
}