:root{
  --bg:#000;

  --gold:#FFD400;
  --gold2:#FFEA00;

  --text:#fff2b0;
  --muted: rgba(255,242,176,.72);

  --panel: rgba(255,212,0,.06);
  --panel2: rgba(255,212,0,.035);

  --stroke: rgba(255,212,0,.22);
  --stroke2: rgba(255,255,255,.06);

  --shadow: 0 30px 90px rgba(0,0,0,.75);
  --r: 18px;
  --t: .18s cubic-bezier(.2,.8,.2,1);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", sans-serif;
  overflow:hidden;
}

/* Background canvas (lighter + cleaner) */
#bg3d{
  position:fixed; inset:0;
  width:100%; height:100%;
  z-index:0;
  opacity:.42;
  filter: blur(.2px);
  mix-blend-mode: screen;
}

/* layout */
.appShell{
  position:relative;
  z-index:1;
  height:100%;
  display:grid;
  grid-template-columns: 380px 1fr;
  gap: 18px;
  padding: 18px;
}

/* LEFT */
.leftPane{
  border:1px solid var(--stroke);
  border-radius: 22px;
  background:
    radial-gradient(1100px 700px at 20% 20%, rgba(255,212,0,.14), transparent 52%),
    linear-gradient(180deg, rgba(255,212,0,.06), rgba(255,212,0,.02));
  box-shadow: var(--shadow);
  padding: 18px 16px;
  position:relative;
  overflow:hidden;
}

.brand{
  display:flex; align-items:center; gap:12px;
  padding: 6px 4px 10px 4px;
}
.dot{
  width:16px; height:16px; border-radius:50%;
  background: radial-gradient(circle at 30% 30%, var(--gold2), rgba(255,212,0,.25));
  box-shadow: 0 0 22px rgba(255,212,0,.35);
}
.brandTitle{font-weight:900; letter-spacing:.18em}
.brandSub{font-size:12px; color:var(--muted); margin-top:2px}

.leftTitle{
  margin: 12px 0 12px;
  font-weight:800;
  opacity:.95;
}

/* Circle */
.circleWrap{ margin-top: 8px; position:relative; }
.circleGlow{
  position:absolute; inset: 50% auto auto 50%;
  width: 360px; height: 360px;
  transform: translate(-50%,-42%);
  background: radial-gradient(circle, rgba(255,212,0,.20), rgba(255,212,0,.06) 42%, transparent 72%);
  filter: blur(2px);
  pointer-events:none;
}

.circle{
  width: 340px; height: 340px;
  margin: 14px auto 10px;
  border-radius: 50%;
  border:1px solid rgba(255,212,0,.26);
  background:
    radial-gradient(circle at 50% 38%, rgba(255,212,0,.10), rgba(0,0,0,.55) 62%),
    radial-gradient(circle at 50% 50%, transparent 55%, rgba(255,212,0,.08) 56%, transparent 60%);
  position:relative;
  display:block;
  overflow:visible;
}

/* ring line */
.circle::before{
  content:"";
  position:absolute; inset: 18px;
  border-radius:50%;
  border:1px dashed rgba(255,212,0,.18);
  opacity:.9;
}

/* nodes (placed by JS at exact angles) */
.node{
  position:absolute;
  left:50%; top:50%;
  transform: translate(-50%,-50%);
  border:1px solid rgba(255,212,0,.28);
  background: rgba(0,0,0,.52);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  cursor:pointer;
  transition: transform var(--t), border-color var(--t), box-shadow var(--t), background var(--t);
  box-shadow: 0 0 0 rgba(255,212,0,0);
  user-select:none;
  font-weight:900;
  letter-spacing:.01em;
  white-space:nowrap;
}

/* glossy sheen */
.node::after{
  content:"";
  position:absolute; inset:0;
  border-radius:999px;
  background: linear-gradient(180deg, rgba(255,255,255,.12), transparent 55%);
  opacity:.22;
  pointer-events:none;
}

.node:hover{
  transform: translate(-50%,-50%) scale(1.04);
  border-color: rgba(255,212,0,.62);
  box-shadow: 0 0 32px rgba(255,212,0,.18);
  background: rgba(255,212,0,.08);
}

.node.active{
  border-color: rgba(255,212,0,.85);
  box-shadow: 0 0 40px rgba(255,212,0,.22);
  background: rgba(255,212,0,.12);
}

/* Center core (single clean label) */
.core{
  position:absolute; inset: 50% auto auto 50%;
  transform: translate(-50%,-50%);
  width: 190px; height: 190px;
  border-radius: 50%;
  border:1px solid rgba(255,212,0,.26);
  background:
    radial-gradient(circle at 50% 35%, rgba(255,212,0,.14), rgba(0,0,0,.62) 70%),
    radial-gradient(circle at 30% 30%, rgba(255,212,0,.10), transparent 55%);
  box-shadow:
    inset 0 0 32px rgba(255,212,0,.10),
    0 0 40px rgba(255,212,0,.10);
  display:flex;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:8px;
  text-align:center;
  padding: 14px;
  cursor:pointer;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}

.core:hover{
  transform: translate(-50%,-50%) scale(1.02);
  border-color: rgba(255,212,0,.65);
  box-shadow:
    inset 0 0 34px rgba(255,212,0,.12),
    0 0 52px rgba(255,212,0,.14);
}
.core:active{ transform: translate(-50%,-50%) scale(1.00); }

.coreTitle{ font-weight:1000; letter-spacing:.02em; }
.coreSub{ font-size:12px; color: var(--muted); }

.hint{
  font-size:12px;
  color:var(--muted);
  padding: 0 6px;
}

/* RIGHT */
.mainPane{
  border:1px solid var(--stroke);
  border-radius: 22px;
  background:
    radial-gradient(1200px 900px at 70% 30%, rgba(255,212,0,.10), transparent 55%),
    linear-gradient(180deg, rgba(255,212,0,.03), rgba(0,0,0,.42));
  box-shadow: var(--shadow);
  display:flex;
  flex-direction:column;
  overflow:hidden;
}

.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--stroke2);
  background: rgba(0,0,0,.32);
  backdrop-filter: blur(8px);
}
.screenTitle{ font-weight:1000; letter-spacing:.02em; font-size: 18px; }
.topNote{ font-size:12px; color: var(--muted); }

.screen{
  padding: 18px;
  overflow:auto;
  height:100%;
}
.hidden{ display:none !important; }

/* cards */
.card{
  border:1px solid rgba(255,212,0,.12);
  background: rgba(0,0,0,.46);
  border-radius: 20px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow:
    inset 0 0 36px rgba(255,212,0,.06),
    0 18px 60px rgba(0,0,0,.55);
  backdrop-filter: blur(8px);
}
.cardHead{
  font-weight:1000;
  margin-bottom: 10px;
}
.cardHint{
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}
.grid2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* text areas */
.textarea{
  width:100%;
  min-height: 130px;
  padding: 12px 12px;
  border-radius: 16px;
  border:1px solid rgba(255,212,0,.18);
  background: rgba(0,0,0,.62);
  color: var(--text);
  outline:none;
  resize:vertical;
}
.textarea:focus{
  border-color: rgba(255,212,0,.70);
  box-shadow: 0 0 0 4px rgba(255,212,0,.12);
}

/* Custom upload */
.upload{
  display:flex;
  align-items:center;
  gap: 12px;
  padding: 12px;
  border-radius: 16px;
  border:1px solid rgba(255,212,0,.18);
  background: rgba(0,0,0,.62);
}
.upload input[type="file"]{ display:none; }

.uploadBtn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255,212,0,.45);
  background:
    linear-gradient(180deg, rgba(255,234,0,1), rgba(255,212,0,1));
  color:#1a1300;
  font-weight:1000;
  cursor:pointer;
  box-shadow: 0 10px 28px rgba(0,0,0,.45);
  transition: transform var(--t), filter var(--t);
  white-space:nowrap;
}
.uploadBtn:hover{ transform: translateY(-1px); filter: brightness(1.03); }
.uploadBtn:active{ transform: translateY(0px); }

.uploadName{
  color: var(--muted);
  font-size: 12px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  flex: 1;
}

/* actions + buttons */
.actions{ margin-top: 12px; display:flex; gap:10px; flex-wrap:wrap; }
.btn{
  position:relative;
  background: linear-gradient(180deg, rgba(255,234,0,1), rgba(255,212,0,1));
  color: #1a1300;
  border: none;
  border-radius: 16px;
  padding: 12px 16px;
  font-weight:1000;
  letter-spacing:.02em;
  cursor:pointer;
  transition: transform var(--t), filter var(--t);
  box-shadow: 0 14px 40px rgba(0,0,0,.55);
}
.btn::after{
  content:"";
  position:absolute; inset:0;
  border-radius:16px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.28), transparent);
  opacity:.22;
  transform: translateX(-60%);
  animation: sheen 2.6s linear infinite;
  pointer-events:none;
}
@keyframes sheen{
  0%{ transform: translateX(-60%); }
  100%{ transform: translateX(60%); }
}
.btn:hover{ transform: translateY(-1px); filter: brightness(1.03); }
.btn:active{ transform: translateY(0px); }

.media{
  width:100%;
  border-radius: 16px;
  background: rgba(0,0,0,.62);
  border:1px solid rgba(255,212,0,.12);
}

.imgOut{
  width:100%;
  max-height: 520px;
  object-fit: contain;
  border-radius: 16px;
  border:1px solid rgba(255,212,0,.12);
  background: rgba(0,0,0,.62);
}

.mv{
  width:100%;
  height: 520px;
  border-radius: 16px;
  border:1px solid rgba(255,212,0,.12);
  background: rgba(0,0,0,.68);
}

.dl{
  display:inline-block;
  margin-top: 10px;
  color: var(--gold);
  text-decoration:none;
  font-weight:1000;
  border-bottom: 1px solid rgba(255,212,0,.35);
}

/* status */
.statusbar{
  border-top:1px solid var(--stroke2);
  padding: 10px 14px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(0,0,0,.32);
  backdrop-filter: blur(8px);
}

/* loader */
.loader{
  position:fixed; inset:0;
  background: rgba(0,0,0,.78);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index: 50;
}
.loaderCard{
  border:1px solid rgba(255,212,0,.22);
  border-radius: 22px;
  background: radial-gradient(700px 280px at 50% 0%, rgba(255,212,0,.12), rgba(0,0,0,.62));
  padding: 18px 18px;
  width: min(420px, 92vw);
  display:flex;
  align-items:center;
  gap: 16px;
  box-shadow: 0 40px 120px rgba(0,0,0,.8);
}
.loaderTitle{ font-weight:1000; letter-spacing:.18em; }
.loaderSub{ margin-top: 6px; color: var(--muted); font-size: 12px; }

.cube{
  width: 56px; height: 56px;
  position: relative;
  transform-style: preserve-3d;
  animation: spin 1.05s linear infinite;
}
.face{
  position:absolute;
  inset:0;
  border:1px solid rgba(255,212,0,.62);
  background: rgba(255,212,0,.10);
  box-shadow: 0 0 22px rgba(255,212,0,.18);
}
.f1{ transform: translateZ(28px); }
.f2{ transform: rotateY(90deg) translateZ(28px); }
.f3{ transform: rotateY(180deg) translateZ(28px); }
.f4{ transform: rotateY(-90deg) translateZ(28px); }
.f5{ transform: rotateX(90deg) translateZ(28px); }
.f6{ transform: rotateX(-90deg) translateZ(28px); }

@keyframes spin{
  0%{ transform: rotateX(18deg) rotateY(0deg); }
  100%{ transform: rotateX(18deg) rotateY(360deg); }
}

/* responsive */
@media (max-width: 980px){
  body{overflow:auto}
  .appShell{ grid-template-columns: 1fr; height:auto; }
  #bg3d{ position:fixed }
  .grid2{ grid-template-columns: 1fr; }
  .circle{ width: 320px; height: 320px; }
}