html,
body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(circle at 50% 40%, #16202b 0%, #0a0e14 70%);
}

#page {
  display: flex;
  height: 100vh;
  width: 100vw;
}

#puzzle-stage {
  flex: 1 1 auto;
  min-width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  overflow: hidden;
}

#top-panel {
  flex: 0 0 320px;
  width: 320px;
  height: 100%;
  box-sizing: border-box;
  overflow-y: auto;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: rgba(8, 11, 16, 0.85);
  border-left: 1px solid rgba(255, 255, 255, 0.06);
}

#top-controls {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

#brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

#brand {
  font: 700 20px/1 system-ui, sans-serif;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  margin-right: 0.2em;
}

.brand-globe {
  color: #4fc3f7;
  margin-right: 0.2em;
}

.brand-trip {
  color: #ffcf3f;
}

#lang-switcher {
  position: relative;
  flex: 0 0 auto;
}

#lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font: 600 12px/1 system-ui, sans-serif;
  color: #e6ebf0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  padding: 5px 10px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

#lang-toggle:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.22);
}

#lang-toggle img {
  width: 18px;
  height: 12px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15);
  display: block;
}

#lang-toggle .bi-chevron-down {
  font-size: 9px;
  color: #98a2ae;
  margin-left: 1px;
  transition: transform 0.2s ease;
}

#lang-toggle[aria-expanded="true"] .bi-chevron-down {
  transform: rotate(180deg);
}

#lang-list {
  list-style: none;
  margin: 0;
  padding: 6px;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 112px;
  background: rgba(12, 16, 22, 0.97);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  z-index: 20;
}

#lang-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 600 12px/1 system-ui, sans-serif;
  color: #e6ebf0;
  padding: 8px 9px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
}

#lang-list li img {
  width: 18px;
  height: 12px;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15);
  display: block;
}

#lang-list li:hover {
  background: rgba(255, 255, 255, 0.08);
}

#lang-list li[aria-selected="true"] {
  background: rgba(79, 195, 247, 0.15);
  color: #4fc3f7;
}

/* ---- HUD (progression/erreurs/temps), panneau latéral ---- */

#puzzle-hud {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

#puzzle-hud[hidden] {
  display: none;
}

#hud-progress-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  overflow: hidden;
}

#hud-progress-fill {
  height: 100%;
  background: #4fc3f7;
  border-radius: 999px;
  transition: width 0.25s ease;
  width: 0%;
}

.hud-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

#hud-progress-label,
#hud-errors,
#hud-time {
  font: 600 12px/1 system-ui, sans-serif;
  color: #e6ebf0;
  white-space: nowrap;
}

#hud-errors {
  color: #f4a3a3;
}

#hud-restart {
  font: 600 11px/1 system-ui, sans-serif;
  color: #4fc3f7;
  background: rgba(79, 195, 247, 0.12);
  border: 1px solid rgba(79, 195, 247, 0.3);
  border-radius: 999px;
  padding: 5px 10px;
  cursor: pointer;
  transition: background 0.15s;
}

#hud-restart:hover {
  background: rgba(79, 195, 247, 0.22);
}

/* ---- Écran d'accueil / de fin (dans #puzzle-stage) ---- */

.puzzle-intro-screen,
.puzzle-end-screen {
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
  max-width: 420px;
  padding: 24px;
}

.puzzle-intro-screen h1,
.puzzle-end-screen h1 {
  margin: 0;
  font: 700 26px/1.3 system-ui, sans-serif;
  color: #e6ebf0;
}

.puzzle-intro-screen p,
.puzzle-end-screen p {
  margin: 0;
  color: #98a2ae;
  font: 14px/1.5 system-ui, sans-serif;
}

.puzzle-option {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 13px/1.4 system-ui, sans-serif;
  color: #e6ebf0;
  cursor: pointer;
}

.puzzle-option input {
  width: 16px;
  height: 16px;
  accent-color: #4fc3f7;
}

.puzzle-cta-btn {
  padding: 14px 30px;
  border-radius: 999px;
  border: none;
  background: #4fc3f7;
  color: #0a0e14;
  font: 700 14px/1 system-ui, sans-serif;
  cursor: pointer;
}

.puzzle-cta-btn:hover {
  background: #7ad4fa;
}

.puzzle-end-score {
  font: 700 40px/1 system-ui, sans-serif;
  color: #ffcf3f;
}

/* ---- Plateau (carte SVG) ---- */

#puzzle-board-wrap {
  flex: 1 1 auto;
  min-height: 0;
  position: relative;
  background: radial-gradient(circle at 50% 35%, #1b2a38 0%, #0a0e14 75%);
}

#puzzle-board-wrap[hidden] {
  display: none;
}

#puzzle-board {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
}

#puzzle-board:active {
  cursor: grabbing;
}

.puzzle-slot {
  fill: rgba(255, 255, 255, 0.055);
  stroke: rgba(255, 255, 255, 0.28);
  stroke-width: 0.3;
  vector-effect: non-scaling-stroke;
  pointer-events: all;
  transition: fill 0.12s, stroke 0.12s;
}

.puzzle-slot.drag-over {
  fill: rgba(79, 195, 247, 0.35);
  stroke: #4fc3f7;
  stroke-width: 0.5;
}

.puzzle-slot.drag-wrong {
  fill: rgba(244, 63, 94, 0.4);
  stroke: #f43f5e;
}

.puzzle-solved-path {
  fill: #4fc3f7;
  stroke: rgba(10, 14, 20, 0.6);
  stroke-width: 0.3;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
}

#zoom-controls {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 5;
}

.zoom-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(10, 14, 20, 0.7);
  color: #e6ebf0;
  cursor: pointer;
  backdrop-filter: blur(6px);
  font-size: 15px;
  transition: background 0.15s, border-color 0.15s;
}

.zoom-btn:hover {
  background: rgba(10, 14, 20, 0.9);
  border-color: rgba(255, 255, 255, 0.28);
}

/* ---- Étagère de pièces (bas de l'écran) ---- */

#piece-tray {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  overflow-x: auto;
  overflow-y: hidden;
  background: rgba(8, 11, 16, 0.9);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

#piece-tray[hidden] {
  display: none;
}

.piece-tile {
  flex: 0 0 auto;
  width: 78px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 6px 4px 8px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(255, 255, 255, 0.045);
  cursor: grab;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  transition: opacity 0.12s, background 0.15s;
}

.piece-tile:hover {
  background: rgba(255, 255, 255, 0.09);
}

.piece-tile.dragging-source {
  opacity: 0.2;
}

.piece-tile.wrong-shake {
  animation: puzzle-shake 0.35s ease;
}

@keyframes puzzle-shake {

  0%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-4px);
  }

  75% {
    transform: translateX(4px);
  }
}

.piece-tile svg {
  width: 48px;
  height: 48px;
  overflow: visible;
}

.piece-tile svg path {
  fill: #ffcf3f;
  stroke: rgba(10, 14, 20, 0.55);
  stroke-width: 0.5;
  vector-effect: non-scaling-stroke;
}

.piece-tile-label {
  font: 600 9.5px/1.2 system-ui, sans-serif;
  color: #98a2ae;
  text-align: center;
  max-width: 74px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.piece-tile.names-hidden .piece-tile-label {
  visibility: hidden;
}

.piece-drag-clone {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.55));
}

.piece-drag-clone svg {
  width: 60px;
  height: 60px;
  overflow: visible;
}

.piece-drag-clone svg path {
  fill: #ffcf3f;
  stroke: rgba(10, 14, 20, 0.6);
  stroke-width: 0.5;
  vector-effect: non-scaling-stroke;
}

.piece-drag-clone .piece-tile-label {
  color: #e6ebf0;
  background: rgba(10, 14, 20, 0.75);
  padding: 2px 6px;
  border-radius: 6px;
  max-width: none;
}

/* ---- CTA téléchargement (identique aux autres modules) ---- */

#download-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-top: auto;
  padding-top: 2em;
}

.download-text {
  margin: 0;
  text-align: center;
  color: rgba(230, 235, 240, 0.85);
  font: 13px/1.5 system-ui, sans-serif;
}

.store-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(10, 14, 20, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 8px 12px;
  color: #e6ebf0;
  text-decoration: none;
  backdrop-filter: blur(6px);
  transition: background 0.2s, border-color 0.2s, transform 0.2s ease;
}

.store-btn i {
  font-size: 1.2rem;
  color: #4fc3f7;
}

.store-btn:hover {
  background: rgba(10, 14, 20, 0.75);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.store-sub {
  font-size: 0.6rem;
  color: #98a2ae;
  line-height: 1;
}

.store-name {
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 1px;
}

.store-btn-disabled {
  opacity: 0.5;
  cursor: default;
  pointer-events: none;
}

@media (max-width: 700px) {
  #page {
    flex-direction: column;
  }

  #puzzle-stage {
    flex: 1 1 auto;
    order: 2;
  }

  #top-panel {
    flex: 0 0 auto;
    width: 100%;
    height: auto;
    max-height: 40vh;
    border-left: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    order: 1;
  }

  .piece-tile {
    width: 68px;
  }

  .piece-tile svg {
    width: 42px;
    height: 42px;
  }
}