:root {
  --bg: #f5f1e6;
  --bg-2: #efe6d4;
  --panel: #f7f3ea;
  --panel-2: #e8e2d4;
  --border: #8b4513;
  --border-soft: rgba(139, 69, 19, 0.25);
  --ink: #3d2f2a;
  --muted: #7d6a5c;
  --gold: #d4af37;
  --shadow: 0 20px 40px rgba(61, 47, 42, 0.15);
  --tile-blue: #3498db;
  --tile-yellow: #f1c40f;
  --tile-red: #e74c3c;
  --tile-green: #2ecc71;
  --tile-orange: #e67e22;
  --tile-size: 40px;
  --tile-radius: 10px;
  --wall-size: 46px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 1px 1px, rgba(61, 47, 42, 0.05) 1px, transparent 0) 0 0 / 26px 26px,
    linear-gradient(130deg, var(--bg) 0%, var(--bg-2) 40%, #f8f4ee 100%);
  min-height: 100vh;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--border-soft);
  border-radius: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.kicker {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 12px;
  color: var(--muted);
}

.title {
  margin: 6px 0 4px;
  font-family: "Playfair Display", serif;
  font-size: 34px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.header-actions {
  display: flex;
  gap: 12px;
}

.btn {
  border: none;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 8px 16px rgba(61, 47, 42, 0.2);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border-soft);
  box-shadow: none;
}

.status-bar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.status-card {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-soft);
  box-shadow: 0 10px 24px rgba(61, 47, 42, 0.1);
}

.status-card strong {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-card span {
  font-size: 18px;
  font-weight: 600;
}

.guide {
  padding: 14px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-soft);
  box-shadow: 0 10px 24px rgba(61, 47, 42, 0.08);
  font-size: 14px;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
}

.guide strong {
  color: var(--ink);
}

.board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.player-area {
  background: var(--panel);
  border-radius: 20px;
  border: 1px solid var(--border-soft);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.player-area.ai {
  background: #f2f0ea;
}

.player-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.player-name {
  font-family: "Playfair Display", serif;
  font-size: 22px;
  margin: 0 0 4px;
}

.score {
  color: var(--muted);
}

.badge-row {
  display: flex;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}

.badge {
  background: rgba(61, 47, 42, 0.08);
  padding: 4px 8px;
  border-radius: 999px;
}

.wall-grid {
  display: grid;
  grid-template-columns: repeat(5, var(--wall-size));
  gap: 6px;
}

.wall-grid.animate {
  animation: wall-glow 0.6s ease;
}

.wall-cell {
  width: var(--wall-size);
  height: var(--wall-size);
  border-radius: 10px;
  border: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.wall-cell.empty::after {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
}

.wall-cell.pattern-blue { background: rgba(52, 152, 219, 0.18); }
.wall-cell.pattern-yellow { background: rgba(241, 196, 15, 0.18); }
.wall-cell.pattern-red { background: rgba(231, 76, 60, 0.18); }
.wall-cell.pattern-green { background: rgba(46, 204, 113, 0.18); }
.wall-cell.pattern-orange { background: rgba(230, 126, 34, 0.18); }

.color-blue { background: var(--tile-blue); }
.color-yellow { background: var(--tile-yellow); }
.color-red { background: var(--tile-red); }
.color-green { background: var(--tile-green); }
.color-orange { background: var(--tile-orange); }

.pattern-lines {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pattern-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.pattern-line.selectable {
  border-color: rgba(212, 175, 55, 0.8);
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.25);
  cursor: pointer;
  animation: pulse 1.6s ease-in-out infinite;
}

.pattern-line.invalid {
  opacity: 0.45;
}

.pattern-line__slots {
  display: flex;
  gap: 6px;
  flex-direction: row-reverse;
}

.pattern-line__meta {
  font-size: 12px;
  color: var(--muted);
  text-align: right;
  min-width: 90px;
}

.pattern-line.animate {
  animation: tile-drop 0.5s ease;
}

.floor-line {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.floor-line.animate {
  animation: tile-drop 0.5s ease;
}

.floor-slot {
  height: 32px;
  border-radius: 8px;
  border: 1px dashed var(--border-soft);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--muted);
}

.floor-slot .tile {
  width: 24px;
  height: 24px;
}

.floor-slot .token {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #fff3c4, #d4af37);
  border: 1px solid rgba(61, 47, 42, 0.4);
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #5f4b1a;
}

.tile {
  width: var(--tile-size);
  height: var(--tile-size);
  border-radius: var(--tile-radius);
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 6px 12px rgba(61, 47, 42, 0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.tile.small {
  width: 26px;
  height: 26px;
  border-radius: 8px;
}

.tile.empty {
  background: rgba(61, 47, 42, 0.08);
  border: 1px dashed rgba(61, 47, 42, 0.3);
  box-shadow: none;
}

.tile-button {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.tile-button:hover .tile {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 10px 20px rgba(61, 47, 42, 0.25);
}

.table {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  padding: 20px;
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.table-header h2 {
  margin: 0;
  font-family: "Playfair Display", serif;
}

.table-header p {
  margin: 4px 0 0;
  color: var(--muted);
}

.factories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.factory {
  background: var(--panel-2);
  border-radius: 999px;
  padding: 16px;
  border: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  position: relative;
}

.factory.hint,
.center-stack.hint {
  animation: pulse 1.8s ease-in-out infinite;
}

.factory.flash,
.center-stack.flash {
  animation: flash 0.7s ease;
}

.factory-grid {
  display: grid;
  grid-template-columns: repeat(2, var(--tile-size));
  gap: 8px;
}

.factory-label {
  font-size: 12px;
  color: var(--muted);
}

.center-area {
  background: #f4efe4;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.center-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.center-token {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}

.center-stack {
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 8px 10px;
  background: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.center-stack:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(61, 47, 42, 0.16);
}

.center-stack .count {
  font-weight: 600;
  color: var(--ink);
}

.controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-soft);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.select {
  border-radius: 999px;
  padding: 6px 12px;
  border: 1px solid var(--border-soft);
  background: #fff;
  font-weight: 600;
}

.log {
  background: rgba(255, 255, 255, 0.85);
  border-radius: 16px;
  border: 1px solid var(--border-soft);
  padding: 18px 20px;
}

.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.log-header h2 {
  margin: 0;
  font-family: "Playfair Display", serif;
}

.log-hint {
  font-size: 12px;
  color: var(--muted);
}

.log-body {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
}

.log-entry {
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(61, 47, 42, 0.05);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(61, 47, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
}

.overlay-card {
  background: #fff;
  padding: 28px 32px;
  border-radius: 20px;
  max-width: 480px;
  text-align: center;
  box-shadow: var(--shadow);
}

.overlay-card h2 {
  margin-top: 0;
  font-family: "Playfair Display", serif;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(61, 47, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
}

.modal.hidden {
  display: none;
}

.modal-card {
  background: #fff;
  border-radius: 18px;
  padding: 20px 24px;
  max-width: 560px;
  width: min(90vw, 560px);
  box-shadow: var(--shadow);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
}

.difficulty-list {
  display: grid;
  gap: 12px;
}

.difficulty-card {
  border-radius: 14px;
  border: 1px solid var(--border-soft);
  padding: 14px 16px;
  cursor: pointer;
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.difficulty-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(61, 47, 42, 0.12);
}

.difficulty-card.selected {
  border-color: rgba(212, 175, 55, 0.8);
  box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
}

.difficulty-card h4 {
  margin: 0 0 6px;
  font-family: "Playfair Display", serif;
}

.difficulty-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
  font-size: 14px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
  font-family: "Playfair Display", serif;
}

.modal-body p {
  color: var(--muted);
  line-height: 1.5;
}

.icon-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.app.zen .log,
.app.zen .controls {
  display: none;
}

.app.zen .header {
  padding: 14px 18px;
}

.app.zen .kicker,
.app.zen .subtitle {
  display: none;
}

.app.zen .title {
  font-size: 26px;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.2);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(212, 175, 55, 0.08);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.2);
  }
}

@keyframes flash {
  0% {
    box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.25);
  }
  100% {
    box-shadow: 0 0 0 14px rgba(52, 152, 219, 0);
  }
}

@keyframes tile-drop {
  0% {
    transform: translateY(-6px);
    opacity: 0.6;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes wall-glow {
  0% {
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.2);
  }
  100% {
    box-shadow: 0 0 0 12px rgba(212, 175, 55, 0);
  }
}

.hidden {
  display: none !important;
}

body.mobile {
  background:
    radial-gradient(circle at 1px 1px, rgba(61, 47, 42, 0.03) 1px, transparent 0) 0 0 / 18px 18px,
    linear-gradient(160deg, #f7f3ea 0%, #f2e9d8 45%, #faf7f1 100%);
  --tile-size: clamp(20px, 6.2vw, 26px);
  --wall-size: clamp(24px, 7vw, 30px);
  --tile-radius: 7px;
  overflow: hidden;
}

body.mobile .app {
  height: 100svh;
  padding: calc(env(safe-area-inset-top) + 56px) 10px 12px;
  gap: 8px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}

body.mobile .header {
  position: fixed;
  top: calc(env(safe-area-inset-top) + 8px);
  left: 10px;
  right: 10px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  z-index: 60;
}

body.mobile .header > div:first-child {
  display: none;
}

body.mobile .header-actions {
  width: 100%;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
  justify-content: space-between;
}

body.mobile .header-actions::-webkit-scrollbar {
  display: none;
}

body.mobile .btn {
  padding: 6px 10px;
  font-size: 11px;
  white-space: nowrap;
}

body.mobile .status-bar,
body.mobile .guide,
body.mobile .controls,
body.mobile .log {
  display: none;
}

body.mobile .mobile-switch {
  display: flex;
  gap: 8px;
}

body.mobile .mobile-switch .tab {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  padding: 8px 10px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.92);
  color: var(--muted);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

body.mobile .mobile-switch .tab.active {
  color: var(--ink);
  background: #fff;
  box-shadow: 0 6px 16px rgba(61, 47, 42, 0.12);
}

body.mobile .board {
  grid-template-columns: 1fr;
  min-height: 0;
}

body.mobile .player-area {
  display: none;
  padding: 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.96);
  gap: 8px;
  min-height: 0;
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "header header"
    "wall pattern"
    "floor floor";
}

body.mobile .player-area .player-header {
  flex-direction: row;
  align-items: center;
}

body.mobile .player-header {
  grid-area: header;
}

body.mobile .wall-grid {
  grid-area: wall;
}

body.mobile .pattern-lines {
  grid-area: pattern;
  gap: 6px;
}

body.mobile .floor-line {
  grid-area: floor;
}

body.mobile .pattern-line {
  padding: 6px 8px;
}

body.mobile .pattern-line__meta {
  min-width: 56px;
  font-size: 10px;
}

body.mobile .table {
  padding: 8px;
  border-radius: 14px;
  gap: 6px;
  height: clamp(150px, 30vh, 210px);
  display: flex;
  flex-direction: column;
}

body.mobile .table-header {
  display: none;
}

body.mobile .factories {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

body.mobile .factory {
  padding: 8px;
  border-radius: 18px;
}

body.mobile .factory-label {
  font-size: 9px;
}

body.mobile .center-area {
  padding: 8px;
}

body.mobile .center-row {
  gap: 6px;
}

body.mobile .center-stack {
  padding: 6px 8px;
}

body.mobile .modal-card {
  width: min(92vw, 520px);
}

body.mobile .app[data-active-board="PLAYER"] .player-area:not(.ai) {
  display: grid;
}

body.mobile .app[data-active-board="AI"] .player-area.ai {
  display: grid;
}

.mobile-switch {
  display: none;
}

@media (max-width: 980px) {
  .board {
    grid-template-columns: 1fr;
  }

  .status-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .controls {
    flex-direction: column;
    align-items: flex-start;
  }

  .status-bar {
    grid-template-columns: 1fr;
  }
}