:root {
  --bg-top: #d7efff;
  --bg-bottom: #effce9;
  --panel-bg: #ffffffda;
  --panel-border: #99b6aa;
  --text-main: #15251a;
  --accent: #2f8749;
  --accent-strong: #255f35;
  --chip-bg: #f6fbf4;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  min-height: 100%;
  overflow: hidden;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text-main);
  background: linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.app-shell {
  width: 100%;
  min-height: 100dvh;
  max-height: 100dvh;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  overflow: hidden;
}

.game-panel,
.info-panel {
  border: 2px solid var(--panel-border);
  border-radius: 14px;
  background: var(--panel-bg);
  padding: 0.8rem;
  box-shadow: 0 10px 24px rgba(53, 93, 68, 0.12);
}

.game-panel {
  width: 100%;
  min-height: 100dvh;
  max-height: 100dvh;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  padding: 0.35rem 0.42rem;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.game-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.35rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.header-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.game-header h1,
.info-panel h2 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 1.18rem;
}

.weather-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 700;
  color: #275232;
  padding: 0.2rem 0.42rem;
  border-radius: 999px;
  border: 1px solid #9fc3a9;
  background: #f4fcf2;
  font-size: 0.84rem;
}

.weather-icon {
  width: 18px;
  height: 18px;
}

.weather-spin {
  transform: none;
}

.hidden {
  display: none !important;
}

.play-layout {
  display: grid;
  grid-template-columns: 4fr 1fr;
  gap: 0.34rem;
  align-items: stretch;
  flex: 1 1 auto;
  min-height: 0;
  height: clamp(320px, 80dvh, 920px);
}

.right-pane {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  overflow: auto;
  padding-right: 0.08rem;
}

.pane-section {
  border: 1px solid #b5d2bb;
  border-radius: 8px;
  background: rgba(244, 251, 243, 0.92);
  padding: 0.3rem;
}

.pane-section h3 {
  margin: 0 0 0.22rem;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #1f4832;
}

.pane-value {
  margin: 0;
  font-weight: 800;
  font-size: 0.82rem;
  color: #1c452f;
}

.pane-subvalue {
  margin: 0.18rem 0 0;
  font-size: 0.72rem;
  color: #2d5b43;
  line-height: 1.25;
}

.hud-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.22rem;
  margin: 0;
}

.stat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  min-height: 30px;
  padding: 0.2rem 0.34rem;
  border-radius: 8px;
  border: 1px solid #b7d2bb;
  background: var(--chip-bg);
  font-weight: 700;
  font-size: 0.8rem;
}

.stat-chip img {
  width: 16px;
  height: 16px;
}

.canvas-stack {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  aspect-ratio: auto;
  border-radius: 10px;
  border: 1px solid #7a998d;
  overflow: hidden;
  background: #dbeee0;
}

.canvas-stack canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#scene3dCanvas {
  z-index: 1;
  background: #c6e5ff;
}

#gameCanvas {
  z-index: 2;
  outline: none;
  background: transparent;
  touch-action: none;
}

.welcome-overlay,
.rules-overlay,
.intro-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.welcome-overlay {
  background: rgba(8, 24, 14, 0.42);
  backdrop-filter: blur(4px);
  animation: overlay-fade-in 0.6s ease-out;
}

.intro-overlay {
  align-items: flex-end;
  justify-content: flex-start;
  background: linear-gradient(180deg, rgba(10, 25, 18, 0.04), rgba(10, 25, 18, 0.18));
}

.welcome-card {
  width: min(480px, 100%);
  border-radius: 16px;
  border: 1px solid #9cbcab;
  background: rgba(248, 255, 247, 0.98);
  box-shadow: 0 20px 48px rgba(18, 41, 28, 0.28);
  padding: 1.6rem;
  text-align: center;
  animation: card-slide-up 0.5s cubic-bezier(0.18, 0.89, 0.32, 1.27);
}

.welcome-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.welcome-icon {
  width: 74px;
  height: 74px;
  object-fit: contain;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.12));
}

.welcome-card h2 {
  margin: 0;
  font-size: 1.6rem;
  color: #1a3a29;
}

.welcome-card p {
  margin: 0 0 1.6rem;
  line-height: 1.5;
  color: #2b513d;
  font-size: 0.94rem;
}

.welcome-footer {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
}

.welcome-footer button {
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
  flex: 1;
}

.secondary-btn {
  background: transparent !important;
  border: 1px solid #91b5a2 !important;
  color: #2d5b43 !important;
}

.secondary-btn:hover {
  background: rgba(45, 91, 67, 0.05) !important;
}

@keyframes overlay-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes card-slide-up {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.rules-overlay {
  background: rgba(8, 24, 14, 0.46);
}



.intro-card,
.rules-card {
  width: min(560px, 100%);
  border-radius: 12px;
  border: 1px solid #9cbcab;
  background: rgba(248, 255, 247, 0.95);
  box-shadow: 0 14px 30px rgba(22, 44, 31, 0.2);
  padding: 0.85rem 1rem;
}

.intro-card {
  width: min(420px, 100%);
}

.intro-card h2,
.rules-card h3 {
  margin: 0 0 0.45rem;
  color: #1c3f2b;
}

.intro-card p {
  margin: 0 0 0.5rem;
  font-weight: 700;
  color: #264a35;
}

.progress-bar-container {
  width: 100%;
  height: 10px;
  background: #e0ece2;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 1rem;
  border: 1px solid #c8dbc9;
}

.progress-bar-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #4f955f, #7ac38b);
  border-radius: 999px;
  transition: width 0.3s ease-out;
  box-shadow: 0 0 8px rgba(79, 149, 95, 0.4);
}

.intro-card button,
.rules-card button {
  border: 1px solid #699e7a;
  background: #f3fff2;
  color: #1f412c;
  border-radius: 8px;
  font-weight: 700;
  padding: 0.24rem 0.5rem;
  min-height: 30px;
  font-size: 0.82rem;
  cursor: pointer;
}


.rules-card ul {
  margin: 0 0 0.75rem;
  padding-left: 1rem;
}

.rules-card li {
  margin-bottom: 0.32rem;
}

.rules-meta {
  margin: 0 0 0.75rem;
  border: 1px solid #b3d2bd;
  border-radius: 8px;
  background: #f4fbf2;
  padding: 0.45rem 0.55rem;
}

.rules-meta p {
  margin: 0 0 0.2rem;
  font-size: 0.84rem;
  color: #254a34;
}

.rules-meta p:last-child {
  margin-bottom: 0;
}

.rules-card {
  max-height: calc(100% - 12px);
  overflow: auto;
}

.toolbelt {
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.22rem;
}

.action-bar {
  margin-top: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.22rem;
}

.action-button {
  border: 1px solid #8ab99a;
  background: #f5fff5;
  color: #1c3c29;
  border-radius: 7px;
  font-weight: 800;
  min-height: 34px;
  padding: 0.14rem 0.28rem;
  font-size: 0.78rem;
  cursor: pointer;
}

.action-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.action-button.active {
  border-color: #4f955f;
  box-shadow: 0 0 0 2px #b9e3c0;
}

.tool-button {
  border: 1px solid #9bc4a8;
  background: #f6fdf5;
  border-radius: 8px;
  min-height: 58px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.08rem;
  padding: 0.14rem 0.12rem;
  cursor: pointer;
  color: #1d3a26;
  transition: none;
}

.tool-button img {
  width: 20px;
  height: 20px;
}

.tool-button span {
  font-weight: 700;
  font-size: 0.74rem;
}

.tool-button kbd {
  font-size: 0.62rem;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: #e7f6e9;
  border: 1px solid #b8d9bf;
  border-radius: 6px;
  padding: 0.01rem 0.24rem;
}

.tool-button:hover {
  border-color: #9bc4a8;
  box-shadow: none;
}

.tool-button.active {
  border-color: #4f955f;
  box-shadow: 0 0 0 2px #b9e3c0, 0 10px 18px rgba(67, 128, 83, 0.25);
}

.seed-panel {
  margin: 0;
  border: 1px solid #b9d6bf;
  border-radius: 8px;
  background: #f4fbf3;
  padding: 0.26rem;
  max-height: min(24dvh, 250px);
  overflow: auto;
}

.inventory-sidebar {
  position: static;
  width: 100%;
  margin: 0;
  border: 0;
  background: transparent;
  padding: 0;
  max-height: none;
}

.seed-panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.25rem;
}

.seed-panel-head strong {
  color: #1e3e2b;
  font-size: 0.86rem;
}

.seed-panel-head span {
  font-size: 0.74rem;
  color: #345c45;
}

.seed-selector {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
  gap: 0.24rem;
}

.seed-card {
  border: 1px solid #a7c9ae;
  background: #fbfffa;
  border-radius: 8px;
  min-height: 52px;
  padding: 0.16rem;
  text-align: center;
  cursor: pointer;
  color: #1b3824;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.12rem;
  transition: none;
}

.seed-card-icon {
  width: 20px;
  height: 20px;
  image-rendering: pixelated;
}

.seed-card:hover {
  border-color: #a7c9ae;
  box-shadow: none;
}

.seed-card.active {
  border-color: #4d945d;
  box-shadow: 0 0 0 2px #c2e6ca, 0 8px 14px rgba(67, 128, 83, 0.2);
}

.seed-card.empty {
  opacity: 0.7;
  border-style: dashed;
}

.seed-card-name {
  display: none;
}

.seed-card-head {
  display: contents;
}

.seed-card-stats {
  display: none;
}

.seed-stock {
  font-size: 0.68rem;
  font-weight: 700;
  color: #28513a;
}

.seed-card kbd {
  display: none;
}

.nudge-banner {
  margin-top: 0.34rem;
  border-radius: 8px;
  border: 1px solid #91c8a2;
  background: linear-gradient(90deg, #e6f9ea, #f4fff2);
  color: #1d4a2f;
  padding: 0.32rem 0.48rem;
  font-weight: 700;
  font-size: 0.78rem;
}

.walkthrough-panel {
  margin-top: 0.58rem;
  border: 1px solid #87b89a;
  border-radius: 10px;
  background: #edf9f0;
  padding: 0.54rem;
}

.walkthrough-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.4rem;
}

.walkthrough-head strong {
  color: #1d442c;
}

.walkthrough-head span {
  font-size: 0.78rem;
  color: #2e5a3e;
}

.walkthrough-text {
  margin: 0.4rem 0 0.5rem;
  font-size: 0.88rem;
  color: #214833;
}

.walkthrough-actions {
  display: flex;
  gap: 0.4rem;
}

.walkthrough-actions button {
  border: 1px solid #89b99a;
  background: #fbfffb;
  color: #1f412c;
  border-radius: 8px;
  font-weight: 700;
  padding: 0.3rem 0.55rem;
  cursor: pointer;
}

.walkthrough-actions button:hover {
  border-color: #5f9871;
}

.walkthrough-panel.is-collapsed .walkthrough-text,
.walkthrough-panel.is-collapsed #walkthroughNext,
.walkthrough-panel.is-collapsed #walkthroughSkip {
  display: none;
}

.status-line {
  margin: 0.35rem 0 0;
  padding: 0.28rem 0.46rem;
  border-radius: 7px;
  border: 1px solid #b8d4be;
  background: #eef8ef;
  min-height: 32px;
  font-weight: 700;
  font-size: 0.8rem;
  color: #213a28;
}

.game-panel.pre-game-phase .right-pane,
.game-panel.pre-game-phase .nudge-banner,
.game-panel.pre-game-phase .status-line {
  display: none !important;
}

.game-panel.pre-game-phase .play-layout {
  grid-template-columns: 1fr;
  height: clamp(320px, 82dvh, 920px);
}

.ui-tooltip {
  position: fixed;
  z-index: 30;
  pointer-events: none;
  max-width: 260px;
  background: rgba(20, 36, 25, 0.92);
  color: #f4fff5;
  border: 1px solid rgba(162, 221, 173, 0.4);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
  font-size: 0.78rem;
  line-height: 1.3;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.26);
}

@media (max-width: 1080px) {
  .play-layout {
    height: clamp(320px, 78dvh, 860px);
  }
}

@media (max-width: 980px) {
  html,
  body {
    height: auto;
    min-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .app-shell {
    min-height: auto;
    max-height: none;
    overflow: visible;
  }

  .game-panel {
    min-height: auto;
    max-height: none;
    overflow: visible;
  }

  .play-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    height: auto;
    gap: 0.28rem;
  }

  .canvas-stack {
    height: min(58svh, 560px);
    min-height: 250px;
  }

  .right-pane {
    max-height: none;
    min-height: 0;
    overflow: visible;
    padding-right: 0;
  }

  .toolbelt,
  .action-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .seed-selector {
    grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
  }

  .rules-overlay {
    align-items: stretch;
    padding: 0.36rem;
  }

  .rules-card {
    width: 100%;
    max-height: 100%;
    padding: 0.65rem 0.68rem;
  }

  .rules-card ul {
    margin-bottom: 0.5rem;
  }
}

@media (max-width: 640px) {
  .game-panel {
    padding: 0.24rem 0.24rem;
  }

  .game-header {
    margin-bottom: 0.22rem;
  }

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

  .action-button {
    min-height: 36px;
    font-size: 0.76rem;
  }

  .seed-selector {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .stat-chip {
    font-size: 0.74rem;
  }

  .play-layout {
    grid-template-rows: auto auto;
    height: auto;
  }

  .rules-card {
    font-size: 0.92rem;
  }
}