[hidden] {
  display: none !important;
}

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

:root {
  --bg: #101012;
  --panel: #1b1b1f;
  --panel-2: #232327;
  --line: #2c2c31;
  --text: #e9e9ee;
  --muted: #9a9aa2;
  --accent: #3d8bfd;
  --accent-soft: rgba(61, 139, 253, 0.16);
  --danger: #ff6b5e;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ── Toolbar ─────────────────────────────────────────── */

#toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.segmented {
  display: inline-flex;
  background: var(--panel-2);
  border-radius: 8px;
  padding: 2px;
}

.segmented .seg,
.segmented button {
  border: none;
  background: transparent;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}

.segmented .seg.active,
.segmented button.active {
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

#toolbar button.tool,
#toolbar button.primary,
#toolbar button {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 7px;
  padding: 5px 10px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text);
}

#toolbar button:hover {
  background: var(--accent-soft);
}

#toolbar button.tool.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

/* Save feedback: orange while saving, neon green once verified. */
#save-room.saving {
  background: #f5a623;
  border-color: #f5a623;
  color: #1a1206;
  font-weight: 600;
}

#save-room.saved {
  background: #39ff14;
  border-color: #39ff14;
  color: #0a0a0a;
  font-weight: 600;
}

/* Live collaboration toggle — neon green when on. */
#live-room {
  border-color: rgba(57, 255, 20, 0.55);
  color: #b7ffad;
}

#live-room:hover {
  background: rgba(57, 255, 20, 0.14);
}

#live-room.live-on {
  background: #39ff14;
  border-color: #39ff14;
  color: #0a0a0a;
  font-weight: 700;
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.65);
}

#toolbar button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

#toolbar button:disabled {
  opacity: 0.4;
  cursor: default;
}

#toolbar #undo,
#toolbar #redo {
  padding: 5px 9px;
}

/* Undo/redo SVG icons. */
#toolbar #undo .icon-svg,
#toolbar #redo .icon-svg {
  width: 22px;
  height: 22px;
  display: block;
}

.divider {
  width: 1px;
  height: 22px;
  background: var(--line);
  margin: 0 2px;
}

/* ── Main ────────────────────────────────────────────── */

#main {
  display: flex;
  flex: 1;
  min-height: 0;
}

#sidebar {
  width: 200px;
  min-width: 200px;
  background: var(--panel);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 12px 10px;
  gap: 8px;
  overflow-y: auto;
}

#sidebar h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 0 6px;
}

#rooms-list {
  list-style: none;
  flex: 1;
  min-height: 60px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#rooms-list button {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text);
}

#rooms-list button:hover {
  background: var(--accent-soft);
}

#rooms-list .room-name {
  font-weight: 600;
  font-size: 13px;
}

#rooms-list .room-meta {
  font-size: 11px;
  color: var(--muted);
}

#rooms-list li {
  position: relative;
}

/* ── Furniture palette ───────────────────────────────── */

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

.palette .palette-head {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.palette-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 0 6px;
}

.palette-grid button {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  border-radius: 10px;
  padding: 10px 4px 8px;
  cursor: pointer;
  color: var(--text);
}

.palette-grid button:hover {
  background: var(--accent-soft);
}

.palette-grid button .icon {
  font-size: 22px;
  line-height: 1;
}

.palette-grid button span:last-child {
  font-size: 11px;
  color: var(--muted);
}

.palette-grid button.active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.35);
}

.palette-grid button.active .icon,
.palette-grid button.active span:last-child {
  color: #fff;
}

.sidebar-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.sidebar-actions button {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 7px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
  text-align: left;
  color: var(--text);
}

.sidebar-actions button:hover {
  background: var(--accent-soft);
}

#canvas-area {
  flex: 1;
  position: relative;
  min-width: 0;
  background: var(--bg);
}

#plan-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: default;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

#plan-canvas.selecting {
  cursor: grab;
}

#walk-host {
  position: absolute;
  inset: 0;
}

#walk-host canvas {
  width: 100%;
  height: 100%;
  display: block;
  user-select: none;
  -webkit-user-select: none;
}

#walk-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(35, 35, 39, 0.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  white-space: nowrap;
  pointer-events: none;
}

/* ── Floor selector (right sidebar) ──────────────────── */

.floor-row {
  margin-top: 14px;
}

.floor-row > label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 6px;
}

.floor-control {
  display: flex;
  align-items: center;
  gap: 6px;
}

.floor-control .floor-btn {
  width: auto;
  flex: 0 0 auto;
  margin-top: 0;
  padding: 6px 12px;
  font-size: 14px;
  line-height: 1;
}

.floor-value {
  flex: 1;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

/* ── Open Room modal ─────────────────────────────────── */

#open-modal {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
}

.open-box {
  width: 340px;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 14px 16px;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.55);
}

.open-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.open-header h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.open-header button {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 6px;
}

.open-header button:hover {
  background: rgba(255, 107, 94, 0.14);
  color: var(--danger);
}

#open-list,
#version-list {
  list-style: none;
  overflow-y: auto;
  min-height: 60px;
  margin-bottom: 10px;
}

#open-list li,
#version-list li {
  position: relative;
  margin-bottom: 4px;
}

#open-list button,
#version-list button {
  width: 100%;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text);
}

#open-list button:hover,
#version-list button:hover {
  background: var(--accent-soft);
}

#open-list .room-name,
#version-list .room-name {
  font-weight: 600;
  font-size: 13px;
}

#open-list .room-meta,
#version-list .room-meta {
  font-size: 11px;
  color: var(--muted);
}

/* ── Paintball (easter egg) ──────────────────────────── */

#paintball-ui {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

#paint-crosshair {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translate(-50%, -50%);
  border: 2px solid rgba(46, 204, 64, 0.9);
  border-radius: 50%;
}

#paint-crosshair::before,
#paint-crosshair::after {
  content: "";
  position: absolute;
  background: rgba(46, 204, 64, 0.9);
}

#paint-crosshair::before {
  left: 50%;
  top: -9px;
  width: 2px;
  height: 36px;
  transform: translateX(-50%);
}

#paint-crosshair::after {
  top: 50%;
  left: -9px;
  width: 36px;
  height: 2px;
  transform: translateY(-50%);
}

/* ── Inspector ───────────────────────────────────────── */

#inspector {
  width: 260px;
  min-width: 260px;
  background: var(--panel);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 14px 14px 12px;
}

#inspector-content {
  flex: 1;
  overflow-y: auto;
  min-height: 0;
}

#app-version {
  text-align: center;
  font-size: 11px;
  color: var(--muted);
  padding-top: 10px;
  margin-top: 8px;
  border-top: 1px solid var(--line);
}

.rooms-error {
  color: var(--muted);
  font-size: 12px;
  padding: 6px;
  text-align: center;
}

#inspector h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 10px;
}

.field {
  margin-bottom: 12px;
}

.field label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

.field .value-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.field input[type="range"] {
  flex: 1;
  accent-color: var(--accent);
}

.field .readout {
  min-width: 58px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--text);
}

.field input[type="text"],
.field input[type="number"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 6px 9px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  background: var(--panel-2);
}

.field input[type="number"] {
  width: 72px;
  text-align: right;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  padding: 4px 0;
}

.stat-row span:first-child {
  color: var(--muted);
}

.inspector-button {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 7px;
  padding: 7px 10px;
  font-size: 12.5px;
  cursor: pointer;
  margin-top: 6px;
  color: var(--text);
}

.inspector-button:hover {
  background: var(--accent-soft);
}

.inspector-button.danger {
  color: var(--danger);
  border-color: rgba(255, 107, 94, 0.35);
}

.inspector-button.danger:hover {
  background: rgba(255, 107, 94, 0.12);
}

.seg-row {
  display: inline-flex;
  background: var(--panel-2);
  border-radius: 7px;
  padding: 2px;
}

.seg-btn {
  border: none;
  background: transparent;
  padding: 5px 12px;
  border-radius: 5px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
}

.seg-btn.active {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

.inspector-note {
  font-size: 11.5px;
  color: var(--muted);
  margin-top: 8px;
  line-height: 1.5;
}

.inspector-sep {
  height: 1px;
  background: var(--line);
  margin: 14px 0;
}

/* ── Status bar ──────────────────────────────────────── */

#statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 12px;
  background: var(--panel);
  border-top: 1px solid var(--line);
  font-size: 12px;
}

#status-message {
  font-weight: 500;
}

#status-hint {
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Toast notifications ────────────────────────────── */

#toast {
  position: fixed;
  left: 50%;
  bottom: 44px;
  transform: translateX(-50%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 9px 16px;
  font-size: 13px;
  color: var(--text);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 5000;
  max-width: 70vw;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

#toast.error {
  border-color: rgba(255, 107, 94, 0.6);
  color: #ffd7d3;
}

/* ── Server latency ball (next to the version) ──────── */

.latency-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin: 0 3px 1px 0;
  vertical-align: middle;
}

.lat-green { background: #39ff14; }
.lat-orange { background: #f5a623; }
.lat-red { background: #ff6b5e; }

/* ── Login gate ─────────────────────────────────────── */

#login-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.login-box {
  width: 320px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.login-box h1 {
  font-size: 22px;
  font-weight: 700;
  text-align: center;
}

.login-sub {
  color: var(--muted);
  text-align: center;
  font-size: 13px;
}

.login-box input[type="password"] {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  background: var(--panel-2);
}

.login-box button.primary {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
}

.login-error {
  color: var(--danger);
  text-align: center;
  font-size: 12px;
}

/* ── Right-click context menu ───────────────────────── */

#context-menu {
  position: fixed;
  z-index: 4000;
  min-width: 168px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 5px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.55);
}

#context-menu .ctx-title {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 5px 9px 7px;
}

#context-menu button {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 13px;
  padding: 7px 9px;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
}

#context-menu button:hover {
  background: var(--accent-soft);
}

#context-menu button.danger {
  color: var(--danger);
}

#context-menu button.danger:hover {
  background: rgba(255, 107, 94, 0.12);
}

/* ── Light choice menu ───────────────────────────────── */

#build-palette {
  position: relative;
}

#light-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 30;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 5px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#light-menu button {
  display: flex;
  align-items: center;
  gap: 8px;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 12.5px;
  padding: 7px 9px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

#light-menu button:hover {
  background: var(--accent-soft);
}

#light-menu .icon {
  width: 18px;
  text-align: center;
}

/* ── 3D FPS counter ──────────────────────────────────── */

#fps-counter {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 20;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: #e9e9ee;
  background: rgba(10, 14, 26, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 4px 10px;
  border-radius: 7px;
  pointer-events: none;
  backdrop-filter: blur(4px);
}

/* ── 2D zoom controls (bottom-right of the design area) ── */

#zoom-controls {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 9px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

#zoom-controls button {
  min-width: 30px;
  height: 28px;
  padding: 0 8px;
  border: none;
  background: transparent;
  color: var(--text);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
}

#zoom-controls button:hover {
  background: var(--accent-soft);
}

#zoom-level {
  min-width: 44px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  user-select: none;
  cursor: text;
}

#zoom-level input {
  width: 52px;
  font-size: 12px;
  font-family: inherit;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 4px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

#zoom-controls .zoom-divider {
  width: 1px;
  height: 18px;
  background: var(--line);
  margin: 0 4px;
}

/* The plan-rotate buttons use larger arrows so they're easy to hit. */
#zoom-controls #rotate-left,
#zoom-controls #rotate-right {
  font-size: 26px;
  line-height: 1;
  min-width: 40px;
  height: 40px;
  padding: 0;
}