:root {
  --rvi-bg: rgba(255, 255, 255, 0.92);
  --rvi-border: rgba(120, 140, 200, 0.25);
  --rvi-shadow: 0 8px 24px rgba(40, 50, 140, 0.08);
  --rvi-foreground: #121433;
  --rvi-muted: #5d6591;
  --rvi-accent: #4d6bff;
  --rvi-surface: rgba(255, 255, 255, 0.85);
}

/* Settings toggle: when RVI is OFF, hide all RVI UI */
:root[data-rvi="off"] .rvi-bubble,
:root[data-rvi="off"] .rvi-mobile-summary,
:root[data-rvi="off"] .rvi-mobile-chips,
:root[data-rvi="off"] .rvi-modal {
  display: none !important;
}

.rvi-bubble {
  position: relative;
  margin-top: 16px;
  padding: 18px 20px;
  border-radius: 18px;
  background: var(--rvi-bg);
  border: 1px solid var(--rvi-border);
  box-shadow: var(--rvi-shadow);
  color: var(--rvi-foreground);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.rvi-bubble::before {
  content: '';
  position: absolute;
  inset: -60%;
  background: conic-gradient(from 0deg, #6a5bff, #ff5adb, #f9d423, #6a5bff);
  opacity: 0;
  transition: opacity 0.5s ease;
  filter: blur(28px);
  z-index: 0;
}

.rvi-bubble::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  z-index: 0;
}

.rvi-bubble.animate-border::before {
  opacity: 1;
  animation: rvi-border-fade 2s ease forwards;
}

@keyframes rvi-border-fade {
  0% { opacity: 1; }
  90% { opacity: 1; }
  100% { opacity: 0; }
}

.rvi-bubble > * {
  position: relative;
  z-index: 1;
}

.rvi-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--rvi-muted);
  margin-bottom: 14px;
}

.rvi-header-icon {
  font-size: 1.1rem;
}

.rvi-blocks {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.rvi-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border-radius: 14px;
  background: var(--rvi-surface);
  border: 1px solid rgba(120, 140, 200, 0.18);
}

.rvi-block-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--rvi-accent);
}

.rvi-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rvi-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0;
  color: var(--rvi-foreground);
}

.rvi-card-subtitle {
  margin: 0;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

.rvi-empty {
  margin: 0;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

/* Keypoints */
.rvi-keypoints-list {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.rvi-keypoint-item {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(77, 107, 255, 0.08);
}

.rvi-keypoint-title {
  font-weight: 600;
}

.rvi-keypoint-detail {
  color: var(--rvi-muted);
  font-size: 0.92rem;
}

/* Comparison */
.rvi-comparison-grid {
  display: grid;
  gap: 14px;
}

@media (min-width: 768px) {
  .rvi-comparison-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }
}

.rvi-comparison-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(120, 140, 200, 0.16);
}

.rvi-comparison-badge {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--rvi-accent);
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(77, 107, 255, 0.12);
}

.rvi-comparison-title {
  margin: 0;
  font-size: 1rem;
}

.rvi-comparison-summary {
  margin: 0;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

.rvi-comparison-attributes {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
}

.rvi-comparison-attributes dt {
  font-weight: 600;
  color: var(--rvi-muted);
}

.rvi-comparison-attributes dd {
  margin: 0;
}

.rvi-comparison-section {
  font-weight: 600;
  font-size: 0.85rem;
  margin-top: 4px;
}

.rvi-comparison-list {
  margin: 0;
  padding-left: 18px;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

/* Steps */
.rvi-steps-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.rvi-step-item {
  border-radius: 12px;
  border: 1px dashed rgba(77, 107, 255, 0.35);
  padding: 12px 14px;
}

.rvi-step-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.rvi-step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(77, 107, 255, 0.12);
  color: var(--rvi-accent);
  font-size: 0.85rem;
}

.rvi-step-detail,
.rvi-step-meta {
  margin: 6px 0 0;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

.rvi-step-status {
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(28, 203, 142, 0.18);
  color: #1cae78;
}

/* Checklist */
.rvi-checklist-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.rvi-checklist-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 12px;
  align-items: baseline;
}

.rvi-check {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 2px solid rgba(77, 107, 255, 0.35);
}

.rvi-check.checked {
  background: rgba(77, 107, 255, 0.85);
  border-color: rgba(77, 107, 255, 0.85);
  position: relative;
}

.rvi-check.checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.rvi-check-label {
  font-weight: 600;
}

.rvi-check-note {
  grid-column: 2;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

/* Timeline */
.rvi-timeline-list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rvi-timeline-list::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(77, 107, 255, 0.25);
}

.rvi-timeline-item {
  position: relative;
  padding: 0 0 16px 26px;
}

.rvi-timeline-item::before {
  content: '';
  position: absolute;
  left: 1px;
  top: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(77, 107, 255, 0.95);
  box-shadow: 0 0 0 4px rgba(77, 107, 255, 0.18);
}

.rvi-timeline-time {
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--rvi-muted);
}

.rvi-timeline-title {
  margin: 4px 0;
  font-size: 1rem;
}

.rvi-timeline-detail {
  margin: 0;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

.rvi-timeline-status {
  font-size: 0.8rem;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(77, 107, 255, 0.12);
  color: var(--rvi-accent);
}

/* Tradeoffs */
.rvi-tradeoffs-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.rvi-tradeoff-item {
  border-radius: 12px;
  border: 1px solid rgba(77, 107, 255, 0.15);
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.88);
  display: grid;
  gap: 10px;
}

.rvi-tradeoff-title {
  margin: 0;
  font-size: 1rem;
}

.rvi-tradeoff-note {
  margin: 0;
  color: var(--rvi-muted);
}

.rvi-tradeoff-section {
  font-weight: 600;
  font-size: 0.85rem;
}

.rvi-tradeoff-gains,
.rvi-tradeoff-costs {
  margin: 0;
  padding-left: 18px;
  color: var(--rvi-muted);
}

/* Cause & Effect */
.rvi-cause-effect-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.rvi-cause-effect-item {
  display: grid;
  gap: 6px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(77, 107, 255, 0.18);
  background: rgba(255, 255, 255, 0.85);
}

.rvi-cause,
.rvi-effect {
  font-weight: 600;
}

.rvi-arrow {
  font-size: 1.2rem;
  color: var(--rvi-accent);
}

.rvi-strength {
  font-size: 0.8rem;
  color: var(--rvi-muted);
}

.rvi-cause-effect-note {
  margin: 0;
  color: var(--rvi-muted);
  font-size: 0.9rem;
}

/* Metrics */
.rvi-metrics-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.rvi-metric-item {
  display: grid;
  gap: 6px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid rgba(77, 107, 255, 0.18);
  background: rgba(255, 255, 255, 0.88);
}

.rvi-metric-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rvi-metric-label {
  font-weight: 600;
}

.rvi-metric-delta {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(77, 107, 255, 0.12);
  color: var(--rvi-accent);
}

.rvi-metric-delta[data-trend='down'] {
  color: #d64d4d;
  background: rgba(214, 77, 77, 0.1);
}

.rvi-metric-delta[data-trend='up'] {
  color: #1cae78;
  background: rgba(28, 174, 120, 0.1);
}

.rvi-metric-value {
  font-size: 1.4rem;
  font-weight: 700;
}

.rvi-metric-target,
.rvi-metric-note {
  font-size: 0.85rem;
  color: var(--rvi-muted);
}

/* Fallback */
.rvi-fallback-pre {
  margin: 0;
  padding: 12px;
  border-radius: 10px;
  background: rgba(15, 22, 46, 0.9);
  color: #f7f9ff;
  font-size: 0.8rem;
  overflow-x: auto;
  white-space: pre-wrap;
}

/* Mobile modal */
.rvi-mobile-summary {
  width: 100%;
  margin-top: 12px;
  padding: 12px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(135deg, rgba(77, 107, 255, 0.9), rgba(255, 92, 175, 0.9));
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
}

.rvi-mobile-summary:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 4px;
}

.rvi-mobile-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.rvi-mobile-chip {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(77, 107, 255, 0.15);
  color: var(--rvi-accent);
  font-size: 0.8rem;
}

.rvi-modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 999;
}

.rvi-modal[hidden] {
  display: none;
}

.rvi-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 12, 26, 0.55);
  backdrop-filter: blur(6px);
}

.rvi-modal-inner {
  position: relative;
  width: min(92vw, 520px);
  max-height: 80vh;
  overflow-y: auto;
  border-radius: 18px;
  background: var(--rvi-bg);
  border: 1px solid var(--rvi-border);
  box-shadow: 0 20px 48px rgba(30, 40, 110, 0.25);
  padding: 20px;
}

.rvi-modal-inner::-webkit-scrollbar {
  width: 8px;
}

.rvi-modal-inner::-webkit-scrollbar-thumb {
  background: rgba(120, 140, 200, 0.4);
  border-radius: 999px;
}

.rvi-modal-close {
  position: sticky;
  top: 0;
  margin-bottom: 12px;
  align-self: flex-end;
  border: none;
  background: rgba(77, 107, 255, 0.12);
  color: var(--rvi-accent);
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
}

body.rvi-modal-open {
  overflow: hidden;
}

@media (max-width: 720px) {
  .rvi-bubble {
    margin-top: 12px;
    padding: 16px;
  }

  .rvi-block {
    padding: 14px;
  }
}