:root {
  --bg-dark: #0f172a;
  --bg-panel: #1e293b;
  --bg-input: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border: #334155;
  
  --left-pane-width: 320px;
  --right-pane-width: 400px;
  
  --font-main: system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body, html {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-main);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.editor-container {
  display: flex;
  width: 100%;
  height: 100%;
}

/* Left Pane: Inventory */
.inventory-pane {
  width: 0;
  overflow: hidden;
  background-color: var(--bg-panel);
  border-right: 1px solid var(--border);
  transition: width 0.3s ease;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

#main-container.architect-mode .inventory-pane {
  width: var(--left-pane-width);
}

#main-container.dragging .inventory-pane,
#main-container.dragging .chat-pane {
  transition: none; /* Disable transition during drag */
  user-select: none;
}

#main-container.dragging .scene-pane {
  pointer-events: none;
}

.inventory-header {
  height: 48px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  flex-shrink: 0;
}

.inventory-search {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

#inventory-search-input {
  width: 100%;
  padding: 8px 12px;
  background-color: var(--bg-dark);
  border: 1px solid var(--border);
  color: var(--text-main);
  border-radius: 4px;
  outline: none;
  font-size: 13px;
}

#inventory-search-input:focus {
  border-color: var(--accent);
}

.inventory-grid {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.category-header {
  padding: 10px 16px;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.category-header:hover {
  background-color: var(--bg-input);
}

.category-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  padding: 12px;
}

.category-content.collapsed {
  display: none;
}

.inventory-item {
  background-color: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px;
  transition: border-color 0.2s;
}

.inventory-item:hover {
  border-color: var(--accent);
}

.inventory-item img {
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: contain;
}

.inventory-item span {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: center;
  word-break: break-word;
}

.resizer {
  width: 6px;
  background-color: var(--border);
  cursor: col-resize;
  z-index: 10;
  transition: background-color 0.2s;
  flex-shrink: 0;
}

.resizer:hover, .resizer.dragging {
  background-color: var(--accent);
}

/* Center Pane */
.scene-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  min-width: 0;
  min-height: 0;
}

.viewport-header {
  height: 48px;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.viewport-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.viewport-controls button {
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  transition: opacity 0.2s;
}

.viewport-controls button:hover {
  opacity: 0.9;
}

.settings-panel {
  position: absolute;
  top: 50px;
  right: 16px;
  background-color: var(--bg-dark);
  border: 1px solid var(--border);
  padding: 16px;
  border-radius: 6px;
  width: 250px;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.settings-panel h3 {
  margin: 0 0 12px 0;
  font-size: 14px;
  color: var(--text-main);
  text-transform: uppercase;
}

.setting-row {
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
}

.setting-row label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.setting-row input[type="range"], .setting-row select {
  width: 100%;
  background: var(--bg-main);
  color: var(--text-main);
  border: 1px solid var(--border);
  padding: 4px;
}

.setting-row span {
  font-size: 12px;
  color: var(--accent);
  text-align: right;
  margin-top: 4px;
}

#three-canvas-container {
  flex: 1;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

#three-canvas-container canvas {
  display: block;
}

/* Right Pane: Chat */
.chat-pane {
  width: var(--right-pane-width);
  min-width: 250px;
  max-width: 60%;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-panel);
  flex-shrink: 0;
}

.chat-header {
  height: 48px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  color: var(--text-muted);
}

.chat-title {
  font-weight: 600;
  font-size: 15px;
}

.chat-messages {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.5;
  max-width: 85%;
}

.system-msg {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  border: 1px solid rgba(59, 130, 246, 0.2);
  align-self: center;
  text-align: center;
  max-width: 100%;
}

.user-msg {
  background-color: var(--bg-input);
  color: var(--text-main);
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.chat-input-container {
  padding: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
}

#chat-input {
  flex: 1;
  background-color: var(--bg-dark);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 12px 16px;
  border-radius: 24px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

#chat-input:focus {
  border-color: var(--accent);
}

#chat-send {
  background-color: var(--accent);
  color: white;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

#chat-send:hover {
  background-color: var(--accent-hover);
  transform: scale(1.05);
}

#chat-send:active {
  transform: scale(0.95);
}

/* Auth and World Overlays */
.overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

@keyframes mist-drift {
  0% { transform: scale(1) translate(0, 0); opacity: 0.5; filter: hue-rotate(0deg); }
  50% { transform: scale(1.3) translate(3%, 5%); opacity: 0.9; filter: hue-rotate(20deg); }
  100% { transform: scale(1) translate(0, 0); opacity: 0.5; filter: hue-rotate(0deg); }
}

@keyframes bg-glitch {
  0% { transform: translate(0); filter: brightness(1) contrast(1); }
  2% { transform: translate(-10px, 5px) skewX(2deg); filter: brightness(1.5) contrast(1.2); }
  4% { transform: translate(10px, -5px) skewX(-2deg); filter: brightness(1) contrast(1); }
  6% { transform: translate(0); filter: brightness(1) contrast(1); }
  100% { transform: translate(0); filter: brightness(1) contrast(1); }
}

.smoke-layer {
  position: absolute;
  top: -50%; left: -50%; right: -50%; bottom: -50%;
  background: radial-gradient(circle at 50% 50%, rgba(50, 50, 50, 0.4) 0%, transparent 60%),
              radial-gradient(circle at 30% 70%, rgba(30, 30, 30, 0.4) 0%, transparent 50%);
  filter: url(#smoke) blur(10px);
  opacity: 0.8;
  z-index: -2;
  pointer-events: none;
  animation: mist-drift 20s infinite alternate ease-in-out;
}



.overlay::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%; right: -50%; bottom: -50%;
  z-index: -2;
  pointer-events: none;
  mix-blend-mode: screen;
  background: radial-gradient(circle at 70% 30%, rgba(40, 40, 40, 0.2) 0%, transparent 45%),
              radial-gradient(circle at 40% 60%, rgba(60, 60, 60, 0.2) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(20, 20, 20, 0.25) 0%, transparent 60%);
  animation: mist-drift 35s infinite alternate-reverse ease-in-out, bg-glitch 7s infinite linear reverse;
}

.overlay-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  width: 400px;
  max-width: 90%;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  text-align: center;
}

.overlay-card h2 {
  margin-top: 0;
  margin-bottom: 8px;
  color: #fff;
}

.g_id_signin {
  filter: grayscale(100%) brightness(0.8) contrast(1.2);
  transition: filter 0.3s ease;
  margin: 0 auto;
  display: flex;
  justify-content: center;
}

.g_id_signin:hover {
  filter: grayscale(0%) brightness(1) contrast(1);
}

.overlay-card p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.world-list {
  max-height: 250px;
  overflow-y: auto;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
  text-align: left;
}

.world-item {
  padding: 12px;
  background: var(--bg-dark);
  border-radius: 6px;
  margin-bottom: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
  color: var(--text-main);
}

.world-item:hover {
  border-color: var(--accent);
  background: var(--bg-main);
}

.world-switcher-container {
  position: relative;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
}

.world-switcher-header {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 500;
  color: var(--accent);
  transition: background 0.2s;
}

.world-switcher-header:hover {
  background: var(--bg-panel);
}

.world-switcher-dropdown {
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  z-index: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.world-list-small {
  max-height: 200px;
  overflow-y: auto;
  padding: 8px;
}

.world-list-small .world-item {
  padding: 8px 12px;
  margin-bottom: 4px;
}

/* Glitch Title */
.glitch-title {
  position: relative;
  color: rgba(255, 255, 255, 0.25);
  font-size: 2.5em;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 4px;
  text-shadow: 0 0 10px rgba(100, 200, 255, 0.4);
  animation: text-glow 4s infinite alternate;
  margin: 0 0 16px 0;
}

@keyframes text-glow {
  0% { text-shadow: 0 0 10px rgba(100, 200, 255, 0.4); }
  100% { text-shadow: 0 0 20px rgba(100, 200, 255, 0.6), 0 0 30px rgba(100, 200, 255, 0.3); }
}

.glitch-title::before, .glitch-title::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
  pointer-events: none;
}

.glitch-title::before {
  left: 2px;
  text-shadow: -2px 0 rgba(255, 0, 0, 0.5);
  animation: glitch-anim-1 2.5s infinite linear alternate-reverse;
}

.glitch-title::after {
  left: -2px;
  text-shadow: -2px 0 rgba(0, 0, 255, 0.5);
  animation: glitch-anim-2 3s infinite linear alternate-reverse;
}

@keyframes glitch-anim-1 {
  0% { clip-path: inset(20% 0 80% 0); transform: translate(-2px, 1px); }
  20% { clip-path: inset(60% 0 10% 0); transform: translate(2px, -1px); }
  40% { clip-path: inset(40% 0 50% 0); transform: translate(2px, 2px); }
  60% { clip-path: inset(80% 0 5% 0); transform: translate(-2px, -2px); }
  80% { clip-path: inset(10% 0 70% 0); transform: translate(2px, 2px); }
  100% { clip-path: inset(30% 0 50% 0); transform: translate(-2px, 1px); }
}

@keyframes glitch-anim-2 {
  0% { clip-path: inset(10% 0 60% 0); transform: translate(2px, 1px); }
  20% { clip-path: inset(30% 0 20% 0); transform: translate(-2px, 2px); }
  40% { clip-path: inset(70% 0 10% 0); transform: translate(-2px, -1px); }
  60% { clip-path: inset(20% 0 50% 0); transform: translate(2px, -2px); }
  80% { clip-path: inset(50% 0 30% 0); transform: translate(2px, 1px); }
  100% { clip-path: inset(5% 0 80% 0); transform: translate(-2px, 2px); }
}