:root {
  --rn-primary: #7c3aed;
  --rn-primary-hover: #6d28d9;
  --rn-bg-card: #ffffff;
  --rn-border: #e2e8f0;
  --rn-text-main: #0f172a;
  --rn-text-muted: #64748b;
  --rn-pill-bg: #f1f5f9;
  --rn-pill-hover: #e2e8f0;
  --rn-result-bg: #f8fafc;
  --rn-hl-bg: #f5f3ff;
  --rn-hl-border: #ddd6fe;
  --rn-hl-text: #6d28d9;
  --rn-gold-grad: linear-gradient(135deg, #f59e0b, #d97706);
}

.rn-tool-container {
  max-width: 880px;
  margin: 0 auto 3rem auto;
  font-family: inherit;
  color: var(--rn-text-main);
}

.rn-editor-card {
  background: var(--rn-bg-card);
  border: 1px solid var(--rn-border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.rn-presets-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rn-border);
}

.rn-presets-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--rn-text-muted);
}

.rn-pill-btn {
  background: var(--rn-pill-bg);
  border: 1px solid var(--rn-border);
  color: var(--rn-text-main);
  border-radius: 9999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.rn-pill-btn:hover {
  background: var(--rn-pill-hover);
  border-color: var(--rn-primary);
}

.rn-tabs-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.rn-tab-btn {
  flex: 1;
  background: var(--rn-pill-bg);
  border: 1px solid var(--rn-border);
  color: var(--rn-text-main);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.rn-tab-active {
  background: var(--rn-primary);
  color: #ffffff;
  border-color: var(--rn-primary);
}

.rn-panel {
  display: block;
}

/* 3D Coin Disc */
.rn-coin-stage {
  perspective: 600px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 1.5rem 0 2rem 0;
}

.rn-coin-disc {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: var(--rn-gold-grad);
  border: 4px solid #b45309;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #ffffff;
  font-size: 1.3rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  box-shadow: 0 6px 16px rgba(180, 83, 9, 0.35);
  transition: transform 0.6s ease;
  user-select: none;
}

.rn-coin-flipped {
  transform: rotateY(720deg) scale(1.1);
}

.rn-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}

@media (max-width: 680px) {
  .rn-grid-3 {
    grid-template-columns: 1fr;
  }
}

.rn-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--rn-text-main);
}

.rn-req {
  color: #dc2626;
}

.rn-field input,
.rn-field select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--rn-border);
  border-radius: 8px;
  background: var(--rn-bg-card);
  color: var(--rn-text-main);
  font-size: 0.95rem;
  box-sizing: border-box;
}

.rn-field input:focus,
.rn-field select:focus {
  outline: none;
  border-color: var(--rn-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.rn-options-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.rn-checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--rn-text-main);
  cursor: pointer;
}

.rn-action-row {
  display: flex;
  gap: 0.75rem;
}

.rn-primary-btn {
  flex: 2;
  background: var(--rn-primary);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s ease;
}

.rn-primary-btn:hover {
  background: var(--rn-primary-hover);
}

.rn-secondary-btn {
  background: var(--rn-pill-bg);
  color: var(--rn-text-main);
  border: 1px solid var(--rn-border);
  border-radius: 8px;
  padding: 0.85rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}

.rn-results-card {
  background: var(--rn-result-bg);
  border: 1px solid var(--rn-border);
  border-radius: 12px;
  padding: 1.75rem;
}

.rn-highlight-box {
  background: var(--rn-hl-bg);
  border: 1px solid var(--rn-hl-border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1.5rem;
}

.rn-hl-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--rn-hl-text);
  margin-bottom: 0.25rem;
  display: block;
}

.rn-hl-val {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--rn-hl-text);
  margin-bottom: 0.25rem;
  word-break: break-word;
}

.rn-hl-sub {
  font-size: 0.95rem;
  color: var(--rn-hl-text);
}

.rn-specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 640px) {
  .rn-specs-grid {
    grid-template-columns: 1fr;
  }
}

.rn-spec-item {
  background: var(--rn-bg-card);
  border: 1px solid var(--rn-border);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.rn-spec-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--rn-text-muted);
}

.rn-spec-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--rn-text-main);
}

.rn-spec-sub {
  font-size: 0.75rem;
  color: var(--rn-text-muted);
}

.rn-tip-box {
  background: var(--rn-bg-card);
  border: 1px solid var(--rn-border);
  border-radius: 8px;
  padding: 1.25rem;
}

.rn-tip-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 0.25rem 0;
  color: var(--rn-primary);
}

.rn-tip-box p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--rn-text-muted);
  line-height: 1.5;
}

.rn-ad {
  overflow: hidden;
  min-height: 280px;
}
/* tf:dark-palette — generated by migrate_chrome.py */
/* Neutrals inherit the shared chrome tokens so all tools share one
   ground; brand hues are kept and lightened, never inverted. */
[data-theme="dark"] {
  --rn-primary: #a281da;
  --rn-primary-hover: #a481da;
  --rn-bg-card: var(--tf-surface);
  --rn-border: var(--tf-surface);
  --rn-text-main: var(--tf-ink);
  --rn-text-muted: var(--tf-ink-faint);
  --rn-pill-bg: var(--tf-surface);
  --rn-pill-hover: var(--tf-surface);
  --rn-result-bg: var(--tf-surface);
  --rn-hl-bg: var(--tf-surface);
  --rn-hl-border: var(--tf-surface);
  --rn-hl-text: #a481da;
}