:root {
  color-scheme: dark;
  --bg: #070a11;
  --panel: rgba(16, 22, 36, 0.9);
  --panel-border: rgba(164, 186, 241, 0.24);
  --text: #f0f5ff;
  --muted: #adbad8;
  --accent: #69d8ff;
  --danger: #ff667f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Avenir Next', 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 15% 18%, rgba(60, 95, 190, 0.3), transparent 40%),
    radial-gradient(circle at 78% 5%, rgba(24, 160, 210, 0.18), transparent 38%), var(--bg);
  color: var(--text);
}

.dot-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.23;
  background-image: radial-gradient(rgba(255, 255, 255, 0.42) 0.8px, transparent 0.8px);
  background-size: 3px 3px;
}

.shell {
  width: min(1320px, 97vw);
  margin: 20px auto 40px;
  position: relative;
  z-index: 1;
}

.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 20px 46px rgba(0, 0, 0, 0.4);
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  font-size: 1.44rem;
}

h2 {
  font-size: 1.04rem;
}

h3 {
  font-size: 0.95rem;
}

.copy,
.hint {
  margin: 8px 0 0;
  color: var(--muted);
}

.hint {
  font-size: 0.82rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  padding: 2px 6px;
}

.stack {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.grid {
  display: grid;
  gap: 10px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: grid;
  gap: 6px;
}

.field > span {
  color: var(--muted);
  font-size: 0.86rem;
}

.inline-check {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

input,
select,
textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.34);
  color: var(--text);
  padding: 10px 11px;
  font: inherit;
}

input[type='checkbox'] {
  width: 20px;
  height: 20px;
  padding: 0;
}

textarea {
  resize: vertical;
}

.header-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn {
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  font: inherit;
}

.btn:hover {
  border-color: rgba(255, 255, 255, 0.42);
}

.btn-primary {
  border-color: var(--accent);
  color: #05131a;
  background: linear-gradient(160deg, #80e2ff, #62b8ff);
  font-weight: 700;
}

.btn-danger {
  border-color: rgba(255, 102, 127, 0.5);
  color: #ffd9e0;
  background: rgba(255, 102, 127, 0.12);
}

.check-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.check-btn input {
  width: 16px;
  height: 16px;
}

.subcard {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.2);
  padding: 12px;
}

.subhead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(360px, 1fr);
  gap: 12px;
  margin-top: 10px;
}

.stage-wrap {
  display: grid;
  gap: 8px;
}

.stage-label {
  color: var(--muted);
  font-size: 0.82rem;
}

.preview-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.28);
  background: radial-gradient(circle at 20% 30%, rgba(120, 190, 255, 0.16), transparent 45%),
    rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.stage-widget {
  position: absolute;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  background: rgba(8, 14, 24, 0.84);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.45);
  padding: 8px;
  cursor: grab;
  user-select: none;
}

.stage-widget.dragging {
  cursor: grabbing;
}

.stage-widget.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(105, 216, 255, 0.45), 0 10px 26px rgba(0, 0, 0, 0.45);
}

.stage-widget strong {
  display: block;
  font-size: 0.78rem;
}

.stage-widget span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.73rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.widget-panel {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.25);
  padding: 10px;
  min-height: 220px;
}

.widget-rows {
  margin-top: 10px;
  display: grid;
  gap: 9px;
  max-height: 560px;
  overflow: auto;
  padding-right: 4px;
}

.widget-row {
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 11px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.24);
}

.widget-row.selected {
  border-color: rgba(105, 216, 255, 0.62);
}

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

.widget-row-head strong {
  font-size: 0.9rem;
}

.widget-row-head span {
  color: var(--muted);
  font-size: 0.74rem;
}

.widget-grid .field > span,
.field.compact > span {
  font-size: 0.76rem;
}

.widget-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 8px;
}

.custom-editor {
  margin-top: 8px;
  display: grid;
  gap: 8px;
}

.rows {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 8px;
  align-items: end;
}

.sim-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.status {
  margin: 0;
  font-size: 0.9rem;
  color: #a7f9c8;
}

.status.status-error {
  color: #ffc4cf;
}

@media (max-width: 1160px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .widget-panel {
    min-height: 0;
  }
}

@media (max-width: 860px) {
  .grid.two,
  .sim-grid {
    grid-template-columns: 1fr;
  }

  .header-row {
    flex-direction: column;
  }

  .row {
    grid-template-columns: 1fr;
  }
}