:root{
  --bg: #0b0e11;
  --panel: rgba(18, 24, 31, 0.62);
  --panel-strong: rgba(18, 24, 31, 0.82);
  --border: rgba(255,255,255,0.12);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);

  --penalty: rgba(255, 120, 120, 0.14);
  --bonus: rgba(120, 255, 170, 0.12);

  --btn: rgba(255,255,255,0.08);
  --btn-border: rgba(255,255,255,0.14);

  --tier-fail: rgba(255, 120, 120, 0.9);
  --tier-std: rgba(255, 255, 255, 0.85);
  --tier-good: rgba(255, 214, 130, 0.95);
  --tier-out: rgba(140, 220, 255, 0.95);
}

*{ box-sizing: border-box; }
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: radial-gradient(1200px 700px at 20% 10%, rgba(90,120,160,0.12), transparent 60%),
              radial-gradient(900px 600px at 90% 30%, rgba(120,90,160,0.10), transparent 55%),
              var(--bg);
  color: var(--text);
}

.tabs{
  display: flex;
  gap: 10px;
  padding: 12px;
  position: sticky;
  top: 0;
  background: rgba(11,14,17,0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.tabbtn{
  padding: 10px 14px;
  background: var(--btn);
  border: 1px solid var(--btn-border);
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
}
.tabbtn:hover{ transform: translateY(-1px); border-color: rgba(255,255,255,0.25); }
.tabbtn.active{ background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.28); }

.tab{
  display: none;
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 14px 40px;
}
.tab.active{ display: block; }

h2{
  margin: 8px 0 14px;
  font-size: 22px;
  letter-spacing: 0.2px;
}

.panel{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  margin: 12px 0;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(0,0,0,0.28);
}
.panel.nested{
  background: var(--panel-strong);
}

.panel h3{
  margin: 0 0 10px;
  font-size: 16px;
  color: rgba(255,255,255,0.88);
}
.panel h4{
  margin: 0 0 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.80);
}

label{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border-radius: 10px;
  margin: 8px 0;
  border: 1px solid rgba(255,255,255,0.08);
}

label.penalty{ background: var(--penalty); }
label.bonus{ background: var(--bonus); }

input, select{
  width: 180px;
  max-width: 52vw;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(11,14,17,0.55);
  color: var(--text);
  outline: none;
}
input:focus, select:focus{
  border-color: rgba(160, 210, 255, 0.55);
}

.actions{
  display: flex;
  gap: 10px;
  padding: 6px 2px;
}

button{
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.08);
  color: var(--text);
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease, background 120ms ease;
}
button:hover{ transform: translateY(-1px); border-color: rgba(255,255,255,0.26); }
button.primary{
  background: rgba(160,210,255,0.14);
  border-color: rgba(160,210,255,0.30);
}
button.secondary{
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.14);
}

.result{
  min-height: 52px;
}

.result-inline{
  margin-top: 10px;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(11,14,17,0.35);
}

.muted{ color: var(--muted); margin: 6px 2px 10px; }
.hidden{ display: none; }

.bad{
  color: rgba(255,160,160,0.95);
  font-weight: 650;
}

.tier{
  padding: 2px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(11,14,17,0.35);
  font-weight: 700;
}
.tier.failure{ color: var(--tier-fail); border-color: rgba(255,120,120,0.35); }
.tier.standard{ color: var(--tier-std); }
.tier.good{ color: var(--tier-good); border-color: rgba(255,214,130,0.35); }
.tier.outstanding{ color: var(--tier-out); border-color: rgba(140,220,255,0.35); }