/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

:root {
  --panel-w:   360px;
  --bg:        #0e0e12;
  --panel-bg:  rgba(16, 16, 22, 0.84);
  --surface:   rgba(255,255,255,0.04);
  --surface-h: rgba(255,255,255,0.07);
  --border:    rgba(255,255,255,0.06);
  --text:      #d4d4dc;
  --text-dim:  #6e6e7e;
  --accent:    #6ea8fe;
  --accent-2:  #a78bfa;
  --danger:    #f87171;
  --green:     #34d399;
  --amber:     #fbbf24;
  --radius:    8px;
  --font:      "SF Pro Display","Segoe UI","Helvetica Neue",system-ui,sans-serif;
  --mono:      "SF Mono","Cascadia Code","Consolas",monospace;
}

html, body {
  height:100%; overflow:hidden;
  background:var(--bg); color:var(--text);
  font-family:var(--font); font-size:13px;
  -webkit-font-smoothing:antialiased;
}

/* ── Canvas ────────────────────────────────────────────── */
#viewport { position:fixed; inset:0; width:100%; height:100%; display:block; }

/* ── Panel ─────────────────────────────────────────────── */
#panel {
  position:fixed; top:12px; left:12px; bottom:12px;
  width: var(--panel-w); min-width:280px; max-width:560px;
  background:var(--panel-bg);
  backdrop-filter: blur(28px) saturate(1.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  border:1px solid var(--border);
  border-radius:14px;
  z-index:10;
  display:flex; flex-direction:column;
  overflow:hidden;
}

.panel-scroll {
  flex:1; overflow-y:auto; overflow-x:hidden;
  scrollbar-width:thin;
  scrollbar-color:rgba(255,255,255,0.08) transparent;
}
.panel-scroll::-webkit-scrollbar { width:5px; }
.panel-scroll::-webkit-scrollbar-thumb { background:rgba(255,255,255,0.10); border-radius:3px; }

/* ── Resize Handle ─────────────────────────────────────── */
#panel-resize-handle {
  position:absolute; top:0; right:-4px; bottom:0; width:8px;
  cursor:col-resize; z-index:20;
}
#panel-resize-handle::after {
  content:''; position:absolute;
  top:50%; right:2px; transform:translateY(-50%);
  width:3px; height:36px; border-radius:2px;
  background:rgba(255,255,255,0.10);
  transition:background .15s;
}
#panel-resize-handle:hover::after,
#panel-resize-handle:active::after { background:rgba(255,255,255,0.25); }

/* ── Header ────────────────────────────────────────────── */
.panel-header { padding:20px 20px 12px; border-bottom:1px solid var(--border); }
.panel-header h1 {
  font-size:16px; font-weight:600; letter-spacing:-0.3px; color:#fff;
}
.subtitle {
  font-size:10px; color:var(--text-dim); margin-top:2px;
  text-transform:uppercase; letter-spacing:1.2px; font-weight:500;
}

/* ── Sections ──────────────────────────────────────────── */
.panel-section { padding:14px 18px; border-bottom:1px solid var(--border); }
.panel-section:last-child { border-bottom:none; }
.panel-section h2 {
  font-size:10px; text-transform:uppercase; letter-spacing:1.4px;
  color:var(--text-dim); font-weight:600; margin-bottom:10px;
}

/* ── Buttons ───────────────────────────────────────────── */
.btn-row { display:flex; gap:5px; margin-bottom:7px; }
button {
  font-family:var(--font); font-size:11.5px; font-weight:500;
  border:1px solid var(--border); border-radius:var(--radius);
  background:var(--surface); color:var(--text);
  padding:6px 10px; cursor:pointer;
  transition:all .15s ease; flex:1; white-space:nowrap;
}
button:hover { background:var(--surface-h); border-color:rgba(255,255,255,0.12); }
button:active { transform:scale(0.97); }

button.toggle { font-size:10.5px; padding:5px 7px; opacity:.42; }
button.toggle.active {
  opacity:1; background:rgba(110,168,254,0.12);
  border-color:rgba(110,168,254,0.25); color:var(--accent);
}
#btn-add { background:rgba(110,168,254,0.1); border-color:rgba(110,168,254,0.2); color:var(--accent); }
#btn-remove { color:var(--danger); border-color:rgba(248,113,113,0.15); }

#btn-anchors.active, #btn-explode.active {
  background:rgba(52,211,153,0.12); border-color:rgba(52,211,153,0.25); color:var(--green);
}
#btn-hline.active {
  background:rgba(251,191,36,0.12); border-color:rgba(251,191,36,0.25); color:var(--amber);
}
#btn-randomize { width:100%; margin-bottom:10px; }

/* ── Character List ────────────────────────────────────── */
#char-list { display:flex; flex-direction:column; gap:3px; }
.char-item {
  display:flex; align-items:center; gap:10px;
  padding:7px 11px; border-radius:var(--radius);
  background:var(--surface); border:1px solid transparent;
  cursor:pointer; transition:all .15s;
}
.char-item:hover { background:var(--surface-h); }
.char-item.selected { border-color:var(--accent); background:rgba(110,168,254,0.06); }
.char-swatch { width:10px; height:10px; border-radius:50%; flex-shrink:0; }
.char-name { font-size:12px; font-weight:500; flex:1; }
.char-height { font-size:11px; font-family:var(--mono); color:var(--text-dim); }

/* ── Param Row (slider + number input) ─────────────────── */
.param-row {
  display:flex; align-items:center; gap:7px;
  margin-bottom:5px;
}
.param-label {
  font-size:10.5px; color:var(--text-dim);
  width:76px; flex-shrink:0;
  text-transform:capitalize; letter-spacing:0.2px;
}

.param-row input[type="range"] {
  flex:1; min-width:0;
  -webkit-appearance:none; appearance:none;
  height:4px; background:rgba(255,255,255,0.08);
  border-radius:2px; outline:none;
}
.param-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance:none; width:13px; height:13px;
  border-radius:50%; background:var(--accent);
  border:2px solid var(--bg); cursor:pointer;
  box-shadow:0 0 5px rgba(110,168,254,0.3);
}
.param-row input[type="range"]::-moz-range-thumb {
  width:13px; height:13px; border-radius:50%;
  background:var(--accent); border:2px solid var(--bg); cursor:pointer;
}

.param-row input[type="number"],
.name-input {
  width:60px; flex-shrink:0;
  font-family:var(--mono); font-size:11px;
  color:#fff; background:var(--surface);
  border:1px solid var(--border); border-radius:6px;
  padding:4px 6px; outline:none;
  text-align:right;
  transition:border-color .15s;
  -moz-appearance:textfield;
}
.param-row input[type="number"]::-webkit-inner-spin-button,
.param-row input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance:none; margin:0;
}
.param-row input[type="number"]:focus,
.name-input:focus {
  border-color:var(--accent); background:var(--surface-h);
}
.name-input { width:auto; flex:1; text-align:left; font-family:var(--font); font-size:12px; font-weight:500; }
.name-row { margin-bottom:10px; }

/* ── Gender Toggle ─────────────────────────────────────── */
.gender-toggle-row {
  display:flex; flex-direction:column; gap:6px;
  margin-bottom:10px;
  padding:10px 12px; border-radius:var(--radius);
  background:var(--surface); border:1px solid var(--border);
}
.gender-toggle-row > .param-label {
  width:auto; font-size:10px; text-transform:uppercase;
  letter-spacing:1.2px; font-weight:600; margin-bottom:2px;
}
.gender-toggle {
  display:flex; gap:4px;
}
.gt-btn {
  flex:1; padding:7px 10px; font-size:12px; font-weight:500;
  border-radius:6px; text-align:center;
  background:var(--surface); border:1px solid var(--border);
  color:var(--text-dim); transition:all .15s;
}
.gt-btn.active {
  color:#fff; border-color:var(--accent);
  background:rgba(110,168,254,0.14);
}
.gt-btn:hover:not(.active) { background:var(--surface-h); }

.blend-wrap {
  display:flex; align-items:center; gap:7px; margin-top:4px;
}
.blend-label {
  font-size:10px; color:var(--text-dim); width:40px; flex-shrink:0;
}
.blend-wrap input[type="range"] {
  flex:1; -webkit-appearance:none; appearance:none;
  height:3px; background:rgba(255,255,255,0.08);
  border-radius:2px; outline:none;
}
.blend-wrap input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance:none; width:11px; height:11px;
  border-radius:50%; background:var(--accent-2);
  border:2px solid var(--bg); cursor:pointer;
}
.blend-wrap input[type="range"]::-moz-range-thumb {
  width:11px; height:11px; border-radius:50%;
  background:var(--accent-2); border:2px solid var(--bg); cursor:pointer;
}
.blend-wrap input[type="number"] {
  width:52px; font-family:var(--mono); font-size:10.5px;
  color:#fff; background:var(--surface);
  border:1px solid var(--border); border-radius:5px;
  padding:3px 5px; outline:none; text-align:right;
  -moz-appearance:textfield;
}
.blend-wrap input[type="number"]::-webkit-inner-spin-button,
.blend-wrap input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance:none; margin:0;
}
.blend-wrap input[type="number"]:focus {
  border-color:var(--accent); background:var(--surface-h);
}

/* ── Head Image Section ────────────────────────────────── */
.head-image-section {
  margin-top:12px; padding-top:12px;
  border-top:1px solid var(--border);
}
.head-image-section h3 {
  font-size:10px; text-transform:uppercase; letter-spacing:1.4px;
  color:var(--text-dim); font-weight:600; margin-bottom:8px;
}
.hi-upload-row { display:flex; gap:5px; margin-bottom:8px; }
.hi-upload-row button { font-size:11px; }
.btn-sm { flex:0 0 auto !important; padding:6px 10px; }

#face-controls .param-row { margin-bottom:4px; }
#face-controls .param-label { width:68px; }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width:640px) {
  #panel { --panel-w:280px; top:8px; left:8px; bottom:8px; }
}