:root{
  --bg-0:#0a0b0f;
  --bg-1:#111319;
  --bg-2:#181b23;
  --bg-3:#20242e;
  --border:#2a2e3a;
  --border-hi:#3a4152;
  --text-0:#eef0f5;
  --text-1:#a8adba;
  --text-2:#6b7182;
  --accent:#d4af37;
  --accent-rgb:212,175,55;
  --accent-2:#f2ce6f;
  --accent-2-rgb:242,206,111;
  --accent-warn:#ffb545;
  --accent-danger:#ff5c7a;
  --success:#3dffa0;
  --on-accent:#04070a; /* text color for anything sitting on an accent-colored background/button */
  --radius:8px;
  --font-ui:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
  --font-display:'Rajdhani',var(--font-ui);
}

*{box-sizing:border-box;}
html,body{height:100%;margin:0;}
body{
  background:var(--bg-0);
  color:var(--text-0);
  font-family:var(--font-ui);
  font-size:13px;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
::-webkit-scrollbar{width:8px;height:8px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--border-hi);border-radius:4px;}

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

/* ---------- TOP BAR ---------- */
.topbar{
  height:52px;
  flex:0 0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:linear-gradient(180deg,var(--bg-1),var(--bg-0));
  border-bottom:1px solid var(--border);
  z-index:20;
}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);}
.brand-logo{height:28px;width:28px;border-radius:6px;object-fit:cover;}
.brand-mark{color:var(--accent);font-size:18px;text-shadow:0 0 12px var(--accent);}
.brand-name{font-weight:700;font-size:19px;letter-spacing:0.5px;}
.brand-name .accent{color:var(--accent);}
.brand-sub{color:var(--text-2);font-size:11px;border-left:1px solid var(--border);padding-left:10px;margin-left:2px;text-transform:uppercase;letter-spacing:1px;}
.topbar-actions{display:flex;align-items:center;gap:8px;}
.divider-v{width:1px;height:24px;background:var(--border);margin:0 4px;}

.mode-switch{width:200px;flex:0 0 auto;}
.mode-switch .seg-btn{padding:8px 4px;font-size:12px;}

.image-upload-btn{margin-bottom:10px;}

.ai-panel{border-color:rgba(var(--accent-2-rgb),.4);}
.beta-tag{
  font-size:9px;
  font-weight:600;
  letter-spacing:.5px;
  color:var(--accent-2);
  background:rgba(var(--accent-2-rgb),.15);
  border:1px solid rgba(var(--accent-2-rgb),.4);
  border-radius:10px;
  padding:2px 7px;
  text-transform:uppercase;
  margin-left:auto;
}
.panel-title:has(.beta-tag){justify-content:flex-start;}
#ai-key-row{display:flex;gap:6px;margin-bottom:8px;}
#ai-key-row input{flex:1;}
.ghost-btn.small{padding:5px 10px;font-size:11px;}
#btn-ai-generate{
  background:linear-gradient(135deg,var(--accent-2),#9a7a1f);
  border:none;color:#fff;font-weight:600;text-align:center;
  margin:8px 0;
}
#btn-ai-generate:disabled{opacity:.4;cursor:not-allowed;}
.ai-download-row{display:flex;gap:8px;margin-top:6px;}
.ai-download-row a{flex:1;text-align:center;text-decoration:none;}

#ai-auth-forms input, #ai-account-email{margin-bottom:8px;}
.ai-auth-actions{display:flex;gap:8px;margin-bottom:8px;}
.ai-auth-actions button{flex:1;}
#ai-account-panel .row{gap:8px;margin-top:8px;}
#ai-account-panel .row button{flex:1;}
.quota-bar-track{
  height:6px;background:var(--bg-0);border:1px solid var(--border);
  border-radius:4px;overflow:hidden;margin-bottom:6px;
}
.quota-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent-2),var(--accent));transition:width .2s;}
#image-thumb{
  display:block;
  width:100%;
  max-height:140px;
  object-fit:contain;
  border-radius:6px;
  border:1px solid var(--border);
  background:var(--bg-0);
  margin-bottom:8px;
}

.icon-btn,.ghost-btn{
  display:inline-block;
  background:var(--bg-2);
  border:1px solid var(--border);
  color:var(--text-1);
  border-radius:6px;
  padding:7px 12px;
  cursor:pointer;
  font-size:12px;
  font-family:var(--font-ui);
  text-decoration:none;
  transition:all .15s ease;
}
.icon-btn{padding:7px 10px;}
.icon-btn:hover,.ghost-btn:hover{background:var(--bg-3);color:var(--text-0);border-color:var(--border-hi);}
.ghost-select{
  background:var(--bg-2);
  border:1px solid var(--border);
  color:var(--text-1);
  border-radius:6px;
  padding:7px 10px;
  font-size:12px;
  max-width:150px;
}

/* ---------- LAYOUT ---------- */
.main-layout{
  flex:1 1 auto;
  display:grid;
  grid-template-columns:280px 1fr 300px;
  min-height:0;
}

.sidebar{
  background:var(--bg-1);
  overflow-y:auto;
  padding:14px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.sidebar-left{border-right:1px solid var(--border);}
.sidebar-right{border-left:1px solid var(--border);}

.panel{
  background:var(--bg-2);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:12px;
}
.panel-title{
  margin:0 0 10px 0;
  font-family:var(--font-display);
  font-size:12px;
  font-weight:700;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--text-1);
  display:flex;
  align-items:center;
  gap:6px;
}
.panel-title::before{
  content:'';
  width:3px;height:12px;
  background:var(--accent);
  border-radius:2px;
}

#text-input{
  width:100%;
  background:var(--bg-0);
  border:1px solid var(--border);
  color:var(--text-0);
  border-radius:6px;
  padding:10px;
  font-size:15px;
  font-family:var(--font-ui);
  resize:vertical;
  margin-bottom:10px;
}
#text-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(var(--accent-rgb),.12);}

.row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px;}
.row:last-child{margin-bottom:0;}
.chip-label{color:var(--text-2);font-size:11px;text-transform:uppercase;letter-spacing:.5px;flex:0 0 auto;}

.segmented{display:flex;background:var(--bg-0);border:1px solid var(--border);border-radius:6px;overflow:hidden;flex:1 1 auto;}
.seg-btn{
  flex:1;
  background:transparent;
  border:none;
  color:var(--text-1);
  padding:6px 4px;
  font-size:11px;
  cursor:pointer;
  font-family:var(--font-ui);
  border-right:1px solid var(--border);
  transition:all .15s;
}
.seg-btn:last-child{border-right:none;}
.seg-btn:hover{color:var(--text-0);background:var(--bg-2);}
.seg-btn.active{background:var(--accent);color:#00181c;font-weight:700;}

.warn-badge{
  background:rgba(255,181,69,.12);
  border:1px solid rgba(255,181,69,.4);
  color:var(--accent-warn);
  padding:5px 8px;
  border-radius:6px;
  font-size:11px;
  width:100%;
}

.full-select{
  width:100%;
  background:var(--bg-0);
  border:1px solid var(--border);
  color:var(--text-0);
  border-radius:6px;
  padding:9px 10px;
  font-size:13px;
  margin-bottom:8px;
}
.full-select.small{padding:6px 8px;font-size:12px;margin-bottom:0;flex:1;}
.font-status{color:var(--text-2);font-size:11px;justify-content:flex-start;}

.upload-btn{
  display:block;
  text-align:center;
  background:var(--bg-0);
  border:1px dashed var(--border-hi);
  color:var(--text-1);
  border-radius:6px;
  padding:9px;
  font-size:12px;
  cursor:pointer;
  transition:all .15s;
}
.upload-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(var(--accent-rgb),.05);}

.field{margin-bottom:12px;}
.field:last-child{margin-bottom:0;}
.field label{
  display:flex;
  justify-content:space-between;
  font-size:11.5px;
  color:var(--text-1);
  margin-bottom:5px;
}
.field .val{color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums;}

input[type=range]{
  -webkit-appearance:none;
  width:100%;
  height:4px;
  background:var(--bg-0);
  border:1px solid var(--border);
  border-radius:3px;
  outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;
  width:14px;height:14px;
  border-radius:50%;
  background:var(--accent);
  cursor:pointer;
  border:2px solid #04262b;
  box-shadow:0 0 8px rgba(var(--accent-rgb),.5);
}
input[type=range]::-moz-range-thumb{
  width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;border:2px solid #04262b;
}

.field-row{display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.field-row label{font-size:11.5px;color:var(--text-1);flex:0 0 78px;}
input[type=color]{
  -webkit-appearance:none;
  width:34px;height:26px;
  border:1px solid var(--border);
  border-radius:5px;
  background:none;
  cursor:pointer;
  padding:0;
}
input[type=color]::-webkit-color-swatch-wrapper{padding:2px;}
input[type=color]::-webkit-color-swatch{border-radius:3px;border:none;}
.checkbox-inline{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-2);margin-left:auto;}
.locked-note{font-size:10.5px;color:var(--text-2);margin-left:auto;white-space:nowrap;}
input[type=color]:disabled{opacity:.6;cursor:not-allowed;}

/* ---------- VIEWPORT ---------- */
.viewport-wrap{
  display:flex;
  flex-direction:column;
  min-width:0;
  background:radial-gradient(circle at 50% 30%,#141824 0%,#0a0b0f 70%);
}
#viewport{
  position:relative;
  flex:1 1 auto;
  min-height:0;
}
#three-canvas{display:block;width:100%;height:100%;}

.viewport-hud{position:absolute;display:flex;gap:6px;z-index:5;}
.top-left{top:12px;left:12px;background:rgba(10,11,15,.6);backdrop-filter:blur(6px);padding:6px 10px;border-radius:6px;border:1px solid var(--border);color:var(--text-2);font-size:11px;font-variant-numeric:tabular-nums;}
.top-right{top:12px;right:12px;}
.bottom-left{bottom:12px;left:12px;}

.hud-btn{
  width:34px;height:34px;
  background:rgba(17,19,25,.75);
  backdrop-filter:blur(6px);
  border:1px solid var(--border);
  color:var(--text-1);
  border-radius:6px;
  cursor:pointer;
  font-size:15px;
  display:flex;align-items:center;justify-content:center;
  transition:all .15s;
}
.hud-btn:hover{border-color:var(--accent);color:var(--accent);}
.hud-btn.active{border-color:var(--accent);color:var(--accent);background:rgba(var(--accent-rgb),.12);}
.hud-btn.small{width:auto;height:28px;padding:0 10px;font-size:11px;}

.loading-overlay{
  position:absolute;inset:0;
  background:rgba(8,9,13,.75);
  backdrop-filter:blur(3px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;
  z-index:10;
  opacity:0;pointer-events:none;
  transition:opacity .2s;
}
.loading-overlay.visible{opacity:1;pointer-events:all;}
.spinner{
  width:34px;height:34px;
  border:3px solid var(--border);
  border-top-color:var(--accent);
  border-radius:50%;
  animation:spin .8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
#loading-text{color:var(--text-1);font-size:12px;}

.bottombar{
  flex:0 0 auto;
  border-top:1px solid var(--border);
  background:var(--bg-1);
  padding:10px 14px;
  display:flex;
  gap:20px;
  overflow-x:auto;
}
.quick-fonts,.quick-materials{display:flex;gap:8px;align-items:center;}
.quick-chip{
  flex:0 0 auto;
  background:var(--bg-2);
  border:1px solid var(--border);
  color:var(--text-1);
  padding:6px 12px;
  border-radius:20px;
  font-size:11.5px;
  cursor:pointer;
  white-space:nowrap;
  transition:all .15s;
}
.quick-chip:hover{border-color:var(--border-hi);color:var(--text-0);}
.quick-chip.active{background:var(--accent);color:#00181c;border-color:var(--accent);font-weight:600;}

/* ---------- MATERIALS ---------- */
.material-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:8px;
}
.mat-swatch{
  aspect-ratio:1;
  border-radius:8px;
  border:2px solid var(--border);
  cursor:pointer;
  position:relative;
  display:flex;align-items:flex-end;justify-content:center;
  overflow:hidden;
  transition:all .15s;
}
.mat-swatch span{
  font-size:9.5px;
  color:#fff;
  background:rgba(0,0,0,.55);
  width:100%;
  text-align:center;
  padding:3px 0;
  text-transform:uppercase;
  letter-spacing:.5px;
}
.mat-swatch:hover{border-color:var(--border-hi);transform:translateY(-1px);}
.mat-swatch.active{border-color:var(--accent);box-shadow:0 0 12px rgba(var(--accent-rgb),.4);}

/* ---------- EXPORT ---------- */
.export-panel{
  border-color:var(--border-hi);
  position:sticky;
  bottom:0;
  z-index:5;
  box-shadow:0 -12px 24px -8px rgba(0,0,0,.55);
}
.export-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px;}
.export-btn{
  background:var(--bg-0);
  border:1px solid var(--border);
  border-radius:8px;
  padding:10px 4px;
  cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:2px;
  color:var(--text-1);
  transition:all .15s;
}
.export-btn .fmt{font-family:var(--font-display);font-weight:700;font-size:14px;color:var(--text-0);}
.export-btn .sub{font-size:8.5px;color:var(--text-2);text-transform:uppercase;letter-spacing:.3px;}
.export-btn:hover{border-color:var(--accent);}
.export-btn:hover .fmt{color:var(--accent);}
.export-btn.selected{border-color:var(--accent);background:rgba(var(--accent-rgb),.08);}

.generate-btn{
  width:100%;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  border:none;
  color:var(--on-accent);
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:1px;
  padding:14px;
  border-radius:8px;
  cursor:pointer;
  box-shadow:0 4px 20px rgba(var(--accent-rgb),.25);
  transition:transform .1s,box-shadow .2s;
}
.generate-btn:hover{transform:translateY(-1px);box-shadow:0 6px 26px rgba(var(--accent-rgb),.4);}
.generate-btn:active{transform:translateY(0);}
.generate-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

.export-hint{color:var(--text-2);font-size:10.5px;text-align:center;margin-top:8px;line-height:1.4;}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1100px){
  .main-layout{grid-template-columns:240px 1fr 260px;}
}
@media (max-width:860px){
  .main-layout{grid-template-columns:1fr;grid-template-rows:200px minmax(280px,1fr) 200px;}
  .sidebar{flex-direction:row;flex-wrap:nowrap;height:200px;border:none;border-bottom:1px solid var(--border);}
  .sidebar-right{border-bottom:none;border-top:1px solid var(--border);}
  .panel{flex:0 0 220px;overflow-y:auto;}
  .brand-sub{display:none;}
}

.mono{font-variant-numeric:tabular-nums;}
[hidden]{display:none !important;}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(10px);}
  to{opacity:1;transform:translateY(0);}
}
.sidebar .panel{animation:fadeInUp .45s ease both;}
.sidebar-left .panel:nth-child(1){animation-delay:.02s;}
.sidebar-left .panel:nth-child(2){animation-delay:.08s;}
.sidebar-left .panel:nth-child(3){animation-delay:.14s;}
.sidebar-left .panel:nth-child(4){animation-delay:.2s;}
.sidebar-left .panel:nth-child(5){animation-delay:.26s;}
.sidebar-right .panel:nth-child(1){animation-delay:.05s;}
.sidebar-right .panel:nth-child(2){animation-delay:.11s;}
.sidebar-right .panel:nth-child(3){animation-delay:.17s;}
.sidebar-right .panel:nth-child(4){animation-delay:.23s;}

.panel{transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;}
.panel:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.35);border-color:var(--border-hi);}

@keyframes logoGlow{
  0%,100%{filter:drop-shadow(0 0 3px rgba(var(--accent-rgb),.6)) drop-shadow(0 0 6px rgba(var(--accent-rgb),.3));}
  50%{filter:drop-shadow(0 0 10px rgba(var(--accent-rgb),1)) drop-shadow(0 0 20px rgba(var(--accent-rgb),.7));}
}
.brand-logo{animation:logoGlow 2.2s ease-in-out infinite;border-radius:6px;}

@keyframes pulseGlow{
  0%,100%{box-shadow:0 4px 20px rgba(var(--accent-rgb),.25);}
  50%{box-shadow:0 6px 32px rgba(var(--accent-rgb),.55);}
}
.generate-btn{animation:pulseGlow 2.4s ease-in-out infinite;}
.generate-btn:hover{animation-play-state:paused;}

.icon-btn,.ghost-btn,.seg-btn,.quick-chip,.mat-swatch,.export-btn,.hud-btn,.upload-btn{
  transition:all .15s ease, transform .1s ease;
}
.icon-btn:active,.ghost-btn:active,.generate-btn:active,.export-btn:active,.quick-chip:active{
  transform:scale(.96);
}

@media (prefers-reduced-motion: reduce){
  .sidebar .panel{animation:none;}
  .brand-logo{animation:none;}
  .generate-btn{animation:none;}
}

/* Rainbow-animated text color for the quick-pick font chips. */
@keyframes rainbowText{
  0%{color:#ff3b3b;}
  16%{color:#ff9d3b;}
  33%{color:#f4ff3b;}
  50%{color:#3bff5c;}
  66%{color:#3bd4ff;}
  83%{color:#7a3bff;}
  100%{color:#ff3b3b;}
}
.quick-chip.rainbow-demo{animation:rainbowText 3s linear infinite;font-weight:700;}