:root {
  --bg: #0f1528;
  --panel-border: rgba(255, 255, 255, 0.16);
  --text: #e9efff;
  --muted: #a9b7de;
  --accent: #8cb1ff;
  --accent-strong: #bfd2ff;
  --ao: rgba(233, 239, 255, 0.88);
  --mo: rgba(140, 177, 255, 0.96);
  --dash: rgba(233, 239, 255, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 900px at 10% 5%, rgba(120, 158, 255, 0.22), transparent 56%),
    radial-gradient(1000px 700px at 90% 20%, rgba(120, 255, 215, 0.13), transparent 56%),
    var(--bg);
  min-height: 100vh;
}

.module {
  width: min(1320px, 100%);
  margin: 0 auto;
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(280px, 350px) minmax(640px, 1fr);
  gap: 18px;
}

.panel,
.workspace {
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(4px);
}

.panel {
  padding: 18px;
}

.workspace {
  position: relative;
  overflow: hidden;
}

.title {
  margin: 0 0 4px;
  font-size: 1.2rem;
}

.subtitle {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.4;
}

.control-label {
  display: block;
  margin-bottom: 7px;
  font-weight: 600;
}

select,
button,
input {
  font: inherit;
  color: inherit;
}

select,
input[type="number"] {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(7, 11, 23, 0.55);
  border-radius: 10px;
  padding: 8px 10px;
}

.step {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: rgba(7, 11, 23, 0.45);
  padding: 12px;
  margin-top: 12px;
}

.step.locked {
  opacity: 0.62;
}

.step-stage[hidden] {
  display: none;
}

.step-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.step-title {
  margin: 0;
  font-size: 0.98rem;
}

.badge {
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.78rem;
  color: var(--muted);
}

.badge.complete {
  border-color: rgba(126, 239, 178, 0.9);
  color: #d4ffe8;
}

.radios {
  display: grid;
  gap: 7px;
}

.radio-row {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 10px;
  background: rgba(6, 10, 20, 0.45);
  padding: 8px 10px;
}

.radio-row label {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.config-template {
  margin: 8px 0 10px;
  color: var(--accent-strong);
}

.config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.input-label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.next-list {
  margin: 8px 0 0 18px;
  padding: 0;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  flex-wrap: wrap;
}

.step-nav {
  justify-content: space-between;
}

.btn {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 10px;
  background: rgba(9, 14, 27, 0.7);
  padding: 8px 12px;
  cursor: pointer;
}

.btn:hover {
  border-color: var(--accent);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.status {
  margin: 8px 0 0;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(10, 15, 30, 0.6);
  font-size: 0.9rem;
}

.status.warning {
  border-color: rgba(255, 191, 118, 0.65);
  color: #ffe6bf;
}

.status.success {
  border-color: rgba(126, 239, 178, 0.85);
  color: #d4ffe8;
}

.hint {
  margin-top: 0;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.workspace-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-end;
  padding: 14px 16px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.workspace-head h2 {
  margin: 0;
  font-size: 1.05rem;
}

.workspace-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.completion-ribbon {
  position: absolute;
  top: 44px;
  right: 14px;
  width: 94px;
  height: auto;
  z-index: 5;
  pointer-events: none;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.38));
}

svg {
  display: block;
  width: 100%;
  height: auto;
}

.lvl {
  stroke-width: 3;
  stroke-linecap: round;
}

.ao { stroke: var(--ao); }
.mo { stroke: var(--mo); }

.corr {
  stroke: var(--dash);
  stroke-width: 2;
  stroke-dasharray: 4 6;
  stroke-linecap: round;
}

.label {
  font-size: 13px;
  fill: rgba(233, 239, 255, 0.94);
  font-weight: 600;
}

.small {
  font-size: 12px;
  fill: rgba(233, 239, 255, 0.77);
}

.electron {
  font-size: 13px;
  fill: rgba(244, 249, 255, 0.98);
  font-weight: 700;
  letter-spacing: 0.5px;
  pointer-events: none;
}

.subscript {
  font-size: 0.78em;
  baseline-shift: sub;
}

.mo-click-target {
  transition: stroke 0.15s ease, filter 0.15s ease;
}

.mo-click-target.active {
  cursor: pointer;
}

.mo-click-target.active:hover {
  stroke: rgba(244, 249, 255, 0.98);
  filter: drop-shadow(0 0 2px rgba(200, 223, 255, 0.55));
}

@media (max-width: 1020px) {
  .module {
    grid-template-columns: 1fr;
  }

  .completion-ribbon {
    width: 74px;
    top: 40px;
    right: 10px;
  }
}