:root {
  --qg-bg: #0c0c0e;
  --qg-surface: rgba(22, 24, 28, 0.84);
  --qg-surface-strong: rgba(30, 33, 39, 0.94);
  --qg-text: #e6e7eb;
  --qg-muted: #a4a8b3;
  --qg-heading: #f0f1f5;
  --qg-accent: #00e6b8;
  --qg-accent-hover: #3bf5d1;
  --qg-border: rgba(230, 231, 235, 0.18);
  --qg-danger: #ff6b7a;
  --qg-warning: #ffd166;
  --qg-ok: #63e6be;
  --qg-shadow: 0 18px 60px rgba(0,0,0,.34);
  --qg-radius: 18px;
  --qg-radius-sm: 12px;
  --qg-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background:
    radial-gradient(circle at 18% 8%, rgba(0, 230, 184, .10), transparent 26%),
    radial-gradient(circle at 82% 12%, rgba(59, 245, 209, .08), transparent 28%),
    var(--qg-bg);
  color: var(--qg-text);
  font-family: var(--qg-font);
  font-size: 13px;
  line-height: 1.42;
}

button, input, select, textarea { font: inherit; }
a { color: var(--qg-accent); text-decoration: none; }
a:hover { color: var(--qg-accent-hover); }

.qg-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.qg-app { width: min(1920px, 100%); margin: 0 auto; padding: 18px; }
.qg-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}
.qg-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
  flex: 0 0 auto;
  letter-spacing: .02em;
}
.qg-brand-main { color: var(--qg-heading); font-size: 21px; font-weight: 780; line-height: 1.15; }
.qg-brand-separator { width: 1px; height: 34px; background: var(--qg-accent); opacity: .6; }
.qg-brand-by { color: var(--qg-muted); font-size: 12px; line-height: 1.15; }
.qg-topbar-right { margin-left: auto; flex: 0 0 auto; display: flex; align-items: center; gap: 10px; }
.qg-social-links { display: flex; align-items: center; gap: 6px; }
.qg-social-link {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--qg-border);
  border-radius: 11px;
  background: rgba(255,255,255,.04);
  color: var(--qg-muted);
  transition: border-color .16s ease, color .16s ease, background .16s ease, transform .16s ease;
}
.qg-social-link svg { width: 17px; height: 17px; fill: currentColor; }
.qg-social-link:hover {
  color: var(--qg-heading);
  border-color: var(--qg-accent);
  background: color-mix(in srgb, var(--qg-accent) 14%, transparent);
  transform: translateY(-1px);
}
.qg-lang-select { width: 92px; min-width: 92px; height: 34px; padding: 6px 9px; }

.qg-panel {
  background: var(--qg-surface);
  border: 1px solid var(--qg-border);
  box-shadow: var(--qg-shadow);
  border-radius: var(--qg-radius);
  backdrop-filter: blur(18px);
}
.qg-settings {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 14px;
  padding: 14px;
  margin-bottom: 12px;
  align-items: start;
}
.qg-settings-main { min-width: 0; }
.qg-settings-top-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) 230px 230px;
  gap: 10px;
  align-items: end;
  margin-bottom: 10px;
}
.qg-settings-two-cols {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(360px, 1fr);
  gap: 10px;
  align-items: stretch;
  margin-bottom: 10px;
}
.qg-description-field .qg-textarea { min-height: 106px; }
.qg-palette-box {
  border: 1px solid var(--qg-border);
  border-radius: var(--qg-radius-sm);
  padding: 9px;
  background: rgba(255,255,255,.028);
}
.qg-palette-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(92px, 1fr));
  gap: 8px;
}
.qg-settings-options {
  display: grid;
  grid-template-columns: 170px repeat(4, max-content);
  gap: 10px 14px;
  align-items: end;
  margin-bottom: 10px;
}
.qg-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.qg-label { color: var(--qg-muted); font-size: 10px; text-transform: uppercase; letter-spacing: .06em; }
.qg-input, .qg-select, .qg-textarea {
  width: 100%;
  color: var(--qg-text);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--qg-border);
  border-radius: 11px;
  outline: none;
  padding: 8px 10px;
  transition: border-color .16s ease, background .16s ease, box-shadow .16s ease;
}
.qg-textarea { resize: vertical; min-height: 60px; }
.qg-input::placeholder, .qg-textarea::placeholder {
  color: rgba(164, 168, 179, .48);
  opacity: 1;
}
.qg-input:focus, .qg-select:focus, .qg-textarea:focus {
  border-color: color-mix(in srgb, var(--qg-accent) 72%, white 0%);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--qg-accent) 20%, transparent);
  background: rgba(255,255,255,.075);
}
.qg-select option { color: #111; background: #f7f7f7; }
.qg-input[type="color"] { padding: 3px; height: 32px; cursor: pointer; }
.qg-check-row { display: flex; align-items: center; gap: 7px; color: var(--qg-text); min-height: 34px; white-space: nowrap; }
.qg-check-row input { accent-color: var(--qg-accent); }

.qg-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.qg-main-actions { justify-content: flex-start; }
.qg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 32px;
  padding: 7px 10px;
  border: 1px solid var(--qg-border);
  border-radius: 11px;
  background: rgba(255,255,255,.06);
  color: var(--qg-text);
  cursor: pointer;
  user-select: none;
  transition: transform .14s ease, background .14s ease, border-color .14s ease, color .14s ease;
}
.qg-btn:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--qg-accent) 55%, var(--qg-border)); background: rgba(255,255,255,.09); }
.qg-btn:active { transform: translateY(0); }
.qg-btn-primary { background: color-mix(in srgb, var(--qg-accent) 22%, rgba(255,255,255,.06)); border-color: color-mix(in srgb, var(--qg-accent) 48%, var(--qg-border)); color: var(--qg-heading); }
.qg-btn-danger { border-color: color-mix(in srgb, var(--qg-danger) 48%, var(--qg-border)); color: #ffd5da; }
.qg-btn-small { min-height: 30px; padding: 5px 9px; font-size: 12px; }
.qg-icon-btn {
  width: 30px; height: 30px; padding: 0; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
}

.qg-preview-wrap { min-width: 0; align-self: start; }
.qg-preview-title { color: var(--qg-muted); font-size: 10px; text-transform: uppercase; letter-spacing: .07em; margin: 0 0 8px; }
.qg-style-preview {
  --pv-bg: #0C0C0E;
  --pv-surface: #16181C;
  --pv-text: #E6E7EB;
  --pv-heading: #F0F1F5;
  --pv-accent: #00E6B8;
  --pv-border: #2A2D34;
  background: var(--pv-bg);
  color: var(--pv-text);
  border: 1px solid var(--pv-border);
  border-radius: 16px;
  padding: 11px;
}
.qg-style-preview-card {
  background: var(--pv-surface);
  border: 1px solid var(--pv-border);
  border-radius: 14px;
  padding: 13px;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
}
.qg-style-preview h3 { margin: 0 0 6px; color: var(--pv-heading); font-size: 15px; }
.qg-style-preview p { margin: 0 0 9px; color: var(--pv-text); font-size: 12px; }
.qg-style-answer { border: 1px solid var(--pv-border); border-radius: 11px; padding: 8px 10px; margin-top: 7px; background: rgba(255,255,255,.05); }
.qg-style-button { margin-top: 10px; border: 1px solid var(--pv-accent); color: var(--pv-heading); background: color-mix(in srgb, var(--pv-accent) 18%, transparent); border-radius: 11px; padding: 8px 10px; display: inline-block; }

.qg-notices {
  height: 58px;
  min-height: 58px;
  max-height: 58px;
  padding: 9px 14px;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  overflow-y: auto;
  scrollbar-width: thin;
}
.qg-notice { display: flex; gap: 8px; align-items: flex-start; color: var(--qg-muted); min-height: 18px; }
.qg-notice.qg-error { color: #ffc7ce; }
.qg-notice.qg-warning { color: #ffe6a3; }
.qg-notice.qg-ok { color: var(--qg-ok); }

.qg-workspace {
  display: grid;
  grid-template-columns: minmax(0, 65fr) minmax(320px, 35fr);
  gap: 12px;
  align-items: stretch;
}
.qg-tree-pane, .qg-results-pane { min-height: 600px; padding: 12px; overflow: hidden; }
.qg-pane-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.qg-pane-title { margin: 0; font-size: 14px; color: var(--qg-heading); letter-spacing: .02em; }
.qg-scale-tools { display: flex; align-items: center; gap: 6px; color: var(--qg-muted); font-size: 12px; }
.qg-scale-hint { margin-left: 8px; white-space: nowrap; color: var(--qg-muted); }

.qg-tree-scroll {
  height: calc(100vh - 450px);
  min-height: 520px;
  overflow: auto;
  border: 1px solid var(--qg-border);
  border-radius: var(--qg-radius-sm);
  background: rgba(255,255,255,.028);
  padding: 26px;
  cursor: grab;
}
.qg-tree-scroll.qg-is-panning { cursor: grabbing; user-select: none; }
.qg-tree-canvas {
  position: relative;
  min-width: 1100px;
  min-height: 700px;
}
.qg-tree-scale {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: top left;
  transition: none;
  min-width: max-content;
  display: flex;
  justify-content: center;
}
.qg-tree-root { display: flex; justify-content: center; min-width: 720px; }
.qg-node { display: flex; flex-direction: column; align-items: center; position: relative; }
.qg-card {
  position: relative;
  width: 280px;
  background: rgba(22, 24, 28, .78);
  border: 1px solid var(--qg-border);
  border-radius: 15px;
  padding: 12px;
  box-shadow: 0 10px 28px rgba(0,0,0,.22);
  backdrop-filter: blur(14px);
}
.qg-card.qg-answer-card { width: 230px; }
.qg-card.qg-final-card { width: 210px; text-align: center; border-style: dashed; color: var(--qg-ok); }
.qg-card-type { color: var(--qg-muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 7px; padding-right: 24px; }
.qg-card-delete { position: absolute; top: 8px; right: 8px; width: 24px; height: 24px; border-radius: 8px; border: 1px solid transparent; background: rgba(255,255,255,.04); color: var(--qg-muted); cursor: pointer; }
.qg-card-delete:hover { color: #fff; border-color: color-mix(in srgb, var(--qg-danger) 55%, var(--qg-border)); background: color-mix(in srgb, var(--qg-danger) 16%, transparent); }
.qg-card .qg-input, .qg-card .qg-textarea, .qg-card .qg-select { font-size: 12px; padding: 7px 8px; border-radius: 9px; }
.qg-card .qg-textarea { min-height: 56px; }
.qg-card-row { display: grid; grid-template-columns: 1fr; gap: 7px; margin-top: 7px; }
.qg-card-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.qg-card-actions .qg-btn { min-height: 30px; padding: 6px 8px; font-size: 12px; border-radius: 9px; }
.qg-question-wrap { display: flex; align-items: flex-start; justify-content: center; gap: 10px; }
.qg-question-action-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 7px; }
.qg-question-action-row .qg-btn { width: 100%; min-width: 0; white-space: normal; line-height: 1.2; overflow-wrap: anywhere; }
.qg-btn-timer-on { border-color: color-mix(in srgb, var(--qg-accent) 70%, var(--qg-border)); background: color-mix(in srgb, var(--qg-accent) 16%, rgba(255,255,255,.04)); color: var(--qg-accent); }
.qg-card.qg-timer-card { width: 220px; padding: 10px; background: rgba(22, 24, 28, .9); }
.qg-timer-card .qg-field { margin-bottom: 8px; }
.qg-timer-card .qg-btn { width: 100%; }
.qg-timer-empty { margin: 8px 0; padding: 8px; border: 1px dashed var(--qg-border); border-radius: 10px; color: var(--qg-muted); font-size: 12px; line-height: 1.35; }
.qg-answer-card .qg-card-actions { flex-wrap: nowrap; }
.qg-answer-card .qg-card-actions .qg-btn { flex: 1 1 0; white-space: nowrap; }

.qg-answers-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 18px;
  margin-top: 34px;
  position: relative;
  padding-top: 18px;
}
.qg-answers-row::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  height: 18px;
  border-left: 1px solid var(--qg-border);
}
.qg-answer-branch { display: flex; flex-direction: column; align-items: center; position: relative; }
.qg-answer-branch::before {
  content: "";
  position: absolute;
  top: -18px;
  left: 50%;
  height: 18px;
  border-left: 1px solid var(--qg-border);
}
.qg-answer-branch::after {
  content: "";
  position: absolute;
  top: -18px;
  left: 0;
  right: 0;
  border-top: 1px solid var(--qg-border);
}
.qg-answer-branch:first-child::after { left: 50%; }
.qg-answer-branch:last-child::after { right: 50%; }
.qg-answer-branch:only-child::after { display: none; }
.qg-next-wrap { margin-top: 34px; position: relative; }
.qg-next-wrap::before {
  content: "";
  position: absolute;
  top: -34px;
  left: 50%;
  height: 34px;
  border-left: 1px solid var(--qg-border);
}

.qg-results-help {
  color: var(--qg-muted);
  border: 1px solid var(--qg-border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(255,255,255,.035);
  margin-bottom: 10px;
  font-size: 12px;
}
.qg-score-summary { display: grid; gap: 7px; margin-bottom: 10px; }
.qg-score-pill {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--qg-border);
  border-radius: 11px;
  padding: 8px 10px;
  background: rgba(255,255,255,.035);
  color: var(--qg-muted);
}
.qg-score-pill strong { color: var(--qg-heading); font-weight: 650; }
.qg-results-list { display: grid; gap: 10px; margin-top: 10px; }
.qg-result-card { width: 100%; }
.qg-result-range { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }

.qg-modal[hidden] { display: none; }
.qg-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,.66);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}
.qg-confirm-dialog,
.qg-modal-dialog {
  width: min(1480px, 100%);
  max-height: 92vh;
  overflow: hidden;
  background: #111419;
  border: 1px solid var(--qg-border);
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(0,0,0,.5);
  display: flex;
  flex-direction: column;
}
.qg-modal-head, .qg-modal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px;
  border-bottom: 1px solid var(--qg-border);
}
.qg-modal-head h2 { margin: 0; font-size: 16px; color: var(--qg-heading); }
.qg-confirm-dialog { width: min(460px, 100%); max-height: none; }
.qg-confirm-body { padding: 14px 16px; color: var(--qg-text); }
.qg-confirm-body p { margin: 0; color: var(--qg-text); line-height: 1.55; }
.qg-modal-actions { border-top: 1px solid var(--qg-border); border-bottom: 0; justify-content: flex-end; }
.qg-code-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 12px; min-height: 520px; overflow: auto; }
.qg-code-col { display: flex; flex-direction: column; min-width: 0; }
.qg-code-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 7px; color: var(--qg-heading); }
.qg-code-area {
  min-height: 470px;
  width: 100%;
  resize: vertical;
  color: #e8edf3;
  background: #07090c;
  border: 1px solid var(--qg-border);
  border-radius: 12px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  line-height: 1.45;
}

@media (max-width: 1320px) {
  .qg-settings { grid-template-columns: 1fr; }
  .qg-preview-wrap { width: min(420px, 100%); }
  .qg-settings-options { grid-template-columns: repeat(2, minmax(180px, 1fr)); }
}
@media (max-width: 1050px) {
  .qg-workspace { grid-template-columns: 1fr; }
  .qg-settings-top-grid, .qg-settings-two-cols { grid-template-columns: 1fr; }
  .qg-palette-grid { grid-template-columns: repeat(2, minmax(92px, 1fr)); }
  .qg-code-grid { grid-template-columns: 1fr; }
  .qg-topbar { align-items: flex-start; }
  .qg-topbar-right { gap: 6px; }
  .qg-social-link { width: 31px; height: 31px; border-radius: 10px; }
  .qg-social-link svg { width: 15px; height: 15px; }
}
@media (max-width: 760px) {
  .qg-app { padding: 10px; }
  .qg-brand { min-width: 0; }
  .qg-brand-main { font-size: 18px; }
  .qg-settings-options { grid-template-columns: 1fr; }
  .qg-scale-tools { flex-wrap: wrap; justify-content: flex-end; }
  .qg-scale-hint { margin-left: 0; white-space: normal; }
}

/* v0.1.3 fixes */
.qg-tree-scale {
  transform-origin: top left;
  display: block;
  min-width: 1200px;
  min-height: 700px;
  justify-content: flex-start;
}
.qg-tree-root {
  display: flex;
  justify-content: center;
  min-width: 1100px;
  width: max-content;
  padding: 20px 120px 80px;
}
.qg-card.qg-answer-card { width: 260px; }
.qg-answer-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 7px;
  align-items: end;
}
.qg-answer-toolbar .qg-btn {
  width: 100%;
  min-height: 32px;
  padding: 6px 7px;
  font-size: 11.5px;
  border-radius: 9px;
  white-space: normal;
  line-height: 1.2;
}
.qg-answer-action-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 7px;
}
.qg-answer-card .qg-card-actions { flex-wrap: unset; }
.qg-answer-card .qg-card-actions .qg-btn,
.qg-answer-action-row .qg-btn {
  width: 100%;
  min-width: 0;
  white-space: normal;
  line-height: 1.2;
  overflow-wrap: anywhere;
}
.qg-has-error {
  border-color: color-mix(in srgb, var(--qg-danger) 72%, var(--qg-border)) !important;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--qg-danger) 20%, transparent), 0 12px 32px rgba(255, 107, 122, .13) !important;
}
.qg-link-card {
  width: 230px;
  border-style: dashed;
  color: var(--qg-heading);
}
.qg-link-card strong {
  display: block;
  font-size: 12px;
  line-height: 1.35;
  margin-bottom: 8px;
}
.qg-link-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}
.qg-question-select-dialog { width: min(620px, 100%); }
.qg-question-choice-list {
  padding: 12px;
  display: grid;
  gap: 8px;
  max-height: 56vh;
  overflow: auto;
}
.qg-question-choice {
  text-align: left;
  color: var(--qg-text);
  background: rgba(255,255,255,.055);
  border: 1px solid var(--qg-border);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  transition: border-color .14s ease, background .14s ease, transform .14s ease;
}
.qg-question-choice:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--qg-accent) 55%, var(--qg-border));
  background: rgba(255,255,255,.085);
}
.qg-question-choice-empty {
  color: var(--qg-muted);
  border: 1px solid var(--qg-border);
  border-radius: 12px;
  padding: 12px;
  background: rgba(255,255,255,.035);
}
.qg-card-delete:disabled {
  opacity: .35;
  cursor: not-allowed;
}
@media (max-width: 760px) {
  .qg-answer-toolbar,
  .qg-answer-action-row { grid-template-columns: 1fr; }
}


/* v0.1.4 line rendering and widget-preview fixes */
.qg-tree-scale { position: absolute; }
.qg-tree-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
  z-index: 0;
}
.qg-tree-line {
  fill: none;
  stroke: var(--qg-border);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  opacity: .92;
}
.qg-tree-root { position: relative; z-index: 1; }
.qg-answers-row::before,
.qg-answers-row::after,
.qg-answer-branch::before,
.qg-answer-branch::after,
.qg-next-wrap::before { display: none !important; }

@media (max-width: 760px) {
  .qg-question-wrap { flex-direction: column; align-items: center; }
  .qg-card.qg-timer-card { width: 280px; }
}


/* v0.1.9 expanded tree pane and stable cursor-centered zoom */
.qg-tree-scroll { position: relative; }
.qg-tree-canvas { position: relative; }
.qg-tree-scale {
  position: absolute !important;
  top: 0;
  left: 0;
  transform-origin: top left;
  transition: none !important;
}
.qg-expand-tree-btn.qg-is-active {
  border-color: color-mix(in srgb, var(--qg-accent) 70%, var(--qg-border));
  background: color-mix(in srgb, var(--qg-accent) 17%, rgba(255,255,255,.06));
  color: var(--qg-accent);
}
.qg-tree-pane.qg-tree-expanded {
  position: fixed;
  inset: 18px;
  z-index: 950;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--qg-bg) 34%, rgba(22,24,28,.96));
}
.qg-tree-pane.qg-tree-expanded .qg-tree-scroll {
  flex: 1 1 auto;
  height: auto;
  min-height: 0;
}
.qg-tree-pane.qg-tree-expanded .qg-pane-head {
  flex: 0 0 auto;
}
body.qg-modal-tree-open {
  overflow: hidden;
}
@media (max-width: 760px) {
  .qg-tree-pane.qg-tree-expanded { inset: 8px; }
  .qg-scale-hint { display: none; }
}