:root {
  --coal:      #0a0b0d;
  --dark:      #0f1115;
  --panel:     #13161c;
  --panel2:    #191d26;
  --panel3:    #1e232e;
  --border:    #252b38;
  --border2:   #2e3547;

  --lime:      #a8ff3e;
  --lime-dim:  #6daa22;
  --lime-glow: rgba(168,255,62,.27);
  --cyan:      #38f7d7;
  --amber:     #ffb830;
  --red:       #ff4455;

  --text:      #d8dde8;
  --muted:     #555e72;
  --muted2:    #3a4256;
  --selected:  rgba(168,255,62,.1);

  --mono: 'Consolas', 'Courier New', monospace;
  --title: 'Impact', 'Arial Narrow', sans-serif;

  --r: 4px;
  --hdr: 52px;
  --sb:  24px;
}


*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  background: var(--coal);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.4;
}


body::after {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px, transparent 2px,
    rgba(0,0,0,.035) 2px, rgba(0,0,0,.035) 4px
  );
}


::-webkit-scrollbar { width: 3px; height: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }


#hdr {
  height: var(--hdr);
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px;
  position: relative; z-index: 100; flex-shrink: 0;
}
#hdr::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--lime) 50%, transparent 100%);
  opacity: .3;
}

.logo {
  font-family: var(--title);
  font-size: 24px; letter-spacing: 3px;
  color: var(--lime);
  display: flex; align-items: center; gap: 10px;
  text-shadow: 0 0 24px var(--lime-glow);
  user-select: none;
}
.logo-mark {
  width: 20px; height: 20px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 2px;
  flex-shrink: 0;
}
.logo-mark b {
  background: var(--lime); border-radius: 1px;
  font-size: 0; display: block;
}
.logo-mark b:nth-child(2), .logo-mark b:nth-child(3) { background: var(--lime-dim); }
.logo-v {
  font-family: var(--mono); font-size: 10px;
  color: var(--muted); align-self: flex-end; margin-bottom: 2px;
  font-weight: normal;
}

.hdr-actions, .hdr-right { display: flex; align-items: center; gap: 6px; }
.hdr-sep { width: 1px; height: 18px; background: var(--border2); }


.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px;
  border: 1px solid var(--border2); border-radius: var(--r);
  background: var(--panel2); color: var(--text);
  font-family: var(--mono); font-size: 11px;
  cursor: pointer; transition: all .12s;
  white-space: nowrap; user-select: none; line-height: 1;
}
.btn:hover { background: var(--panel3); color: #fff; }
.btn:active { transform: translateY(1px); }
.btn svg { width: 12px; height: 12px; stroke: currentColor; fill: none; stroke-width: 2; flex-shrink: 0; }

.btn-lime  { background: var(--lime); color: var(--coal); border-color: var(--lime); font-weight: 600; }
.btn-lime:hover  { background: #bfff55; border-color: #bfff55; color: var(--coal); box-shadow: 0 0 18px var(--lime-glow); }
.btn-amber { background: transparent; color: var(--amber); border-color: var(--amber); }
.btn-amber:hover { background: rgba(255,184,48,.12); box-shadow: 0 0 14px rgba(255,184,48,.2); color: #ffd060; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--muted); }
.btn-ghost:hover { border-color: var(--border2); color: var(--text); background: var(--panel2); }


#app {
  display: grid;
  grid-template-columns: 238px 1fr 260px;
  height: calc(100vh - var(--hdr) - var(--sb));
  overflow: hidden;
}

.sidebar {
  background: var(--panel);
  overflow-y: auto; overflow-x: hidden;
  display: flex; flex-direction: column;
}
.side-left  { border-right: 1px solid var(--border); }
.side-right { border-left:  1px solid var(--border); }
.spacer { flex: 1; min-height: 12px; }


.pane {
  padding: 10px 13px;
  border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 7px;
}
.pane-title {
  font-family: var(--mono); font-size: 9px;
  letter-spacing: 2px; text-transform: uppercase;
  color: var(--muted); font-weight: normal;
  display: flex; align-items: center; gap: 7px;
}
.pane-title::before {
  content: ''; display: block;
  width: 10px; height: 1px; background: var(--lime); flex-shrink: 0;
}

.drop-zone {
  border: 1px dashed var(--border2); border-radius: var(--r);
  padding: 14px 8px; text-align: center;
  cursor: pointer; transition: all .2s;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
}
.drop-zone:hover, .drop-zone.over {
  border-color: var(--lime); background: var(--selected);
}
.drop-zone:focus { outline: 2px solid var(--lime); outline-offset: 2px; }
.drop-zone input { display: none; }
.drop-icon { font-size: 22px; }
.drop-zone strong { font-size: 11px; color: var(--text); font-weight: 600; }
.drop-zone em { font-style: normal; font-size: 10px; color: var(--muted); }

.toggle-group { display: flex; gap: 4px; }
.tgl {
  flex: 1; padding: 6px 4px;
  background: var(--panel2); border: 1px solid var(--border);
  border-radius: var(--r); font-family: var(--mono); font-size: 10px;
  color: var(--muted); cursor: pointer; text-align: center; transition: all .12s;
}
.tgl span { font-size: 9px; color: var(--muted2); margin-left: 3px; }
.tgl:hover { color: var(--text); }
.tgl.active { color: var(--amber); border-color: var(--amber); background: rgba(255,184,48,.08); }

.parts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.part-btn {
  padding: 8px 4px; background: var(--panel2);
  border: 1px solid var(--border); border-radius: var(--r);
  cursor: pointer; transition: all .12s; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  font-size: 0;
}
.part-btn span { font-family: var(--mono); font-size: 9px; color: var(--muted); }
.part-btn:hover { border-color: var(--cyan); }
.part-btn:hover span { color: var(--text); }
.part-btn.active { border-color: var(--lime); background: var(--selected); }
.part-btn.active span { color: var(--lime); }
.part-btn::before { font-size: 16px; content: attr(data-part); display: none; }

.part-btn { font-size: 16px; }

.part-full {
  grid-column: 1 / -1; flex-direction: row; justify-content: center; gap: 7px;
  border-color: var(--lime-dim);
}
.part-full span { color: var(--lime-dim); }
.part-full.active span { color: var(--lime); }

.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; }
.tool-btn {
  aspect-ratio: 1; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
  background: var(--panel2); border: 1px solid var(--border);
  border-radius: var(--r); cursor: pointer; transition: all .12s;
  position: relative;
}
.tool-btn:hover { border-color: var(--cyan); transform: scale(1.05); }
.tool-btn.active { border-color: var(--lime); background: var(--selected); box-shadow: 0 0 10px var(--lime-glow); }
.tip {
  position: absolute; bottom: calc(100% + 6px); left: 50%;
  transform: translateX(-50%);
  background: var(--coal); border: 1px solid var(--border2);
  color: var(--text); font-family: var(--mono); font-size: 10px;
  padding: 3px 8px; border-radius: 3px; white-space: nowrap;
  pointer-events: none; opacity: 0; transition: opacity .1s; z-index: 50;
}
.tool-btn:hover .tip { opacity: 1; }

.slider-row {
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--mono); font-size: 10px; color: var(--muted);
}
.slider-row label { cursor: pointer; }
.slider-row span { color: var(--lime); min-width: 28px; text-align: right; }
input[type=range] {
  -webkit-appearance: none; width: 100%; height: 3px;
  background: var(--border2); border-radius: 2px; outline: none; cursor: pointer;
}
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 12px; height: 12px;
  border-radius: 2px; background: var(--lime); cursor: pointer;
  box-shadow: 0 0 6px var(--lime-glow); transition: transform .1s;
}
input[type=range]::-webkit-slider-thumb:active { transform: scale(1.3); }
input[type=range]:focus { outline: none; }

.color-row { display: flex; gap: 8px; align-items: flex-end; }
.color-slot {
  display: flex; flex-direction: column; gap: 4px;
  font-family: var(--mono); font-size: 9px;
  color: var(--muted); text-transform: uppercase;
}
.swatch {
  width: 36px; height: 36px; border-radius: var(--r);
  border: 1px solid var(--border2); cursor: pointer;
  position: relative; overflow: hidden; transition: all .12s;
}
.swatch:hover { border-color: var(--lime); transform: scale(1.08); box-shadow: 0 0 10px var(--lime-glow); }
.swatch input[type=color] {
  position: absolute; inset: -5px;
  width: calc(100% + 10px); height: calc(100% + 10px); opacity: 0; cursor: pointer;
}
.swap-btn { width: 26px; height: 26px; padding: 0; justify-content: center; font-size: 14px; margin-bottom: 4px; flex-shrink: 0; }
.palette {
  display: grid; grid-template-columns: repeat(8, 1fr); gap: 3px;
  margin-top: 2px;
}
.pal-dot {
  aspect-ratio: 1; border-radius: 2px; cursor: pointer;
  border: 1px solid transparent; transition: all .1s;
}
.pal-dot:hover { transform: scale(1.35); border-color: rgba(255,255,255,.5); position: relative; z-index: 1; }

.chk-row {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  cursor: pointer; transition: color .12s; user-select: none;
}
.chk-row:hover { color: var(--text); }
.chk-row input { accent-color: var(--lime); width: 13px; height: 13px; cursor: pointer; }


#center { background: var(--coal); display: flex; flex-direction: column; overflow: hidden; }

.tabs-bar {
  display: flex; gap: 2px; padding: 8px 12px 0;
  background: var(--panel); border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.ctab {
  padding: 7px 14px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--muted); cursor: pointer;
  border-radius: var(--r) var(--r) 0 0;
  border: 1px solid transparent; border-bottom: none;
  display: flex; align-items: center; gap: 6px;
  margin-bottom: -1px; background: transparent; transition: all .12s;
}
.ctab:hover { color: var(--text); background: var(--panel2); }
.ctab.active { color: var(--lime); border-color: var(--border); border-bottom-color: var(--coal); background: var(--coal); }
.dot { width: 5px; height: 5px; border-radius: 50%; background: var(--muted2); flex-shrink: 0; }
.ctab.active .dot { background: var(--lime); }

.face-bar {
  padding: 6px 12px; background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex; gap: 6px; align-items: center; flex-wrap: wrap; flex-shrink: 0;
}
.face-bar-lbl {
  font-family: var(--mono); font-size: 9px; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--muted); flex-shrink: 0;
}
.face-tabs-wrap { display: flex; gap: 4px; flex-wrap: wrap; }
.face-tab {
  padding: 4px 9px; background: var(--panel2); border: 1px solid var(--border);
  border-radius: var(--r); font-family: var(--mono); font-size: 9px;
  color: var(--muted); cursor: pointer; transition: all .12s; text-transform: uppercase;
}
.face-tab:hover { color: var(--text); border-color: var(--border2); }
.face-tab.active { color: var(--cyan); border-color: var(--cyan); background: rgba(56,247,215,.08); }

.canvas-area {
  flex: 1; display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
#editCanvas {
  image-rendering: pixelated; image-rendering: crisp-edges;
  cursor: crosshair; display: block;
  box-shadow: 0 0 0 1px var(--border), 0 0 50px rgba(0,0,0,.7);
}
.zoom-ctrl {
  position: absolute; bottom: 16px; right: 16px;
  display: flex; flex-direction: column; gap: 3px;
}
.z-btn {
  width: 30px; height: 30px;
  background: var(--panel); border: 1px solid var(--border2);
  border-radius: var(--r); color: var(--muted);
  font-size: 16px; cursor: pointer; display: flex; align-items: center;
  justify-content: center; transition: all .12s; font-family: var(--mono);
}
.z-btn:hover { border-color: var(--lime); color: var(--lime); box-shadow: 0 0 8px var(--lime-glow); }
.z-reset { font-size: 13px; }

.info-badge {
  position: absolute; bottom: 16px; left: 16px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--r); padding: 5px 10px;
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  display: flex; align-items: center; gap: 4px;
}
.info-badge span { color: var(--lime); }
.badge-xy { color: var(--muted) !important; }

.preview-wrap {
  background: var(--panel2); border: 1px solid var(--border);
  border-radius: var(--r); overflow: hidden;
  display: flex; align-items: center; justify-content: center; padding: 4px;
}
.preview-wrap canvas { image-rendering: pixelated; display: block; }

.pv-faces { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.pv-btn {
  padding: 5px; background: var(--panel2); border: 1px solid var(--border);
  border-radius: var(--r); font-family: var(--mono); font-size: 9px;
  color: var(--muted); cursor: pointer; text-align: center;
  transition: all .12s; text-transform: uppercase;
}
.pv-btn:hover { color: var(--text); }
.pv-btn.active { color: var(--cyan); border-color: var(--cyan); background: rgba(56,247,215,.08); }

.pane-ge { gap: 10px; }
.ge-title { color: var(--lime); }
.ge-title em { font-style: normal; font-size: 9px; color: var(--cyan); margin-left: 4px; font-family: var(--mono); }
.ge-block { display: flex; flex-direction: column; gap: 5px; }
.ge-btn { width: 100%; justify-content: center; font-size: 10px; padding: 5px; }
.ge-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.ge-pair .btn { justify-content: center; font-size: 10px; padding: 5px 4px; }
.tol-row {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 9px; color: var(--muted);
}
.tol-row input { flex: 1; }
.tol-row span:last-child { color: var(--lime); width: 20px; text-align: right; flex-shrink: 0; }

.hist-count { font-size: 9px; color: var(--muted2); }
.hist-list { display: flex; flex-direction: column; gap: 2px; max-height: 140px; overflow-y: auto; }
.hist-item {
  display: flex; align-items: center; gap: 7px;
  padding: 5px 7px; border-radius: var(--r); cursor: pointer;
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  border: 1px solid transparent; transition: all .1s;
}
.hist-item:hover { background: var(--panel2); color: var(--text); border-color: var(--border); }
.hist-item.active { color: var(--lime); border-color: var(--border); background: var(--selected); }
.hist-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--muted2); flex-shrink: 0; }
.hist-item.active .hist-dot { background: var(--lime); }

.shortcuts { display: flex; flex-direction: column; gap: 5px; }
.shortcuts > div {
  display: flex; align-items: baseline; justify-content: space-between;
  font-family: var(--mono); font-size: 10px; color: var(--muted);
}
.shortcuts dt {
  background: var(--panel2); border: 1px solid var(--border2);
  border-radius: 3px; padding: 1px 7px;
  font-family: var(--mono); font-size: 9px; color: var(--text);
  white-space: nowrap;
}
.shortcuts dd { color: var(--muted); margin: 0; font-size: 10px; }

#v3d {
  display: none; position: absolute; inset: 0;
  background: var(--coal); z-index: 20; flex-direction: column;
}
#v3d.open { display: flex; }
#v3d-mount { flex: 1; position: relative; overflow: hidden; }
#v3d-mount canvas { width: 100% !important; height: 100% !important; display: block; }

.v3d-ui-top { position: absolute; top: 0; left: 0; right: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.v3d-hint {
  display: flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10px; color: var(--muted);
  background: rgba(10,11,13,.8); border: 1px solid var(--border);
  padding: 5px 10px; border-radius: var(--r); backdrop-filter: blur(4px);
}
.v3d-hint svg { width: 11px; height: 11px; stroke: currentColor; fill: none; stroke-width: 2; flex-shrink: 0; }

.v3d-loading {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 14px; font-family: var(--mono); color: var(--muted); font-size: 12px; letter-spacing: 1px;
}
.v3d-spinner {
  width: 36px; height: 36px; border-radius: 50%;
  border: 2px solid var(--border2); border-top-color: var(--lime);
  animation: spin .8s linear infinite;
}

.anim-bar {
  background: var(--panel); border-top: 1px solid var(--border);
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 5px; padding: 8px 16px; flex-shrink: 0; min-height: 54px;
}
.anim-btn {
  padding: 5px 11px; background: var(--panel2);
  border: 1px solid var(--border2); border-radius: var(--r);
  color: var(--muted); font-family: var(--mono);
  font-size: 10px; letter-spacing: .5px; cursor: pointer;
  transition: all .15s; text-transform: uppercase; display: flex; align-items: center; gap: 5px;
}
.anim-btn:hover { color: var(--text); background: var(--panel3); }
.anim-btn.active { color: var(--lime); border-color: var(--lime); background: var(--selected); box-shadow: 0 0 10px var(--lime-glow); }
.anim-btn[data-anim="mine"].active   { color: var(--cyan);  border-color: var(--cyan);  background: rgba(56,247,215,.1);  box-shadow: 0 0 10px rgba(56,247,215,.25); }
.anim-btn[data-anim="shield"].active { color: var(--amber); border-color: var(--amber); background: rgba(255,184,48,.1); box-shadow: 0 0 10px rgba(255,184,48,.25); }

#statusbar {
  height: var(--sb);
  background: var(--panel); border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 14px; font-family: var(--mono); font-size: 10px; color: var(--muted);
  flex-shrink: 0;
}
.sb-left, .sb-right { display: flex; align-items: center; gap: 12px; }
.sb-dot { width: 5px; height: 5px; border-radius: 50%; background: var(--lime); animation: pulse 2.5s infinite; }
.sb-sep { color: var(--muted2); }
.sb-tag {
  background: var(--panel2); border: 1px solid var(--border2);
  border-radius: 3px; padding: 1px 7px; font-size: 9px; color: var(--muted);
  text-decoration: none;
}
.sb-gh:hover { border-color: var(--lime); color: var(--lime); }

#toast {
  position: fixed; top: 62px; right: 20px;
  background: var(--panel2); border: 1px solid var(--lime);
  border-radius: var(--r); padding: 10px 16px;
  font-family: var(--mono); font-size: 11px; color: var(--lime);
  transform: translateX(calc(100% + 30px));
  transition: transform .25s cubic-bezier(.34,1.56,.64,1);
  z-index: 500; box-shadow: 0 0 20px var(--lime-glow); pointer-events: none;
}
#toast.show { transform: translateX(0); }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes spin   { to { transform: rotate(360deg); } }