/* Ripple Reports (ripplereports.app) — Modern Accessible Stylesheet */

:root {
  /* Raw light & dark palette tokens (>= 4.5:1 text contrast, >= 3:1 UI boundary contrast) */
  --bg-canvas-light: #f8fafc;
  --bg-canvas-dark: #0b1120;

  --bg-surface-light: #ffffff;
  --bg-surface-dark: #111827;

  --bg-subtle-light: #f1f5f9;
  --bg-subtle-dark: #1e293b;

  --text-primary-light: #0f172a;
  --text-primary-dark: #f8fafc;

  --text-secondary-light: #334155;
  --text-secondary-dark: #cbd5e1;

  --text-muted-light: #475569;
  --text-muted-dark: #94a3b8;

  --brand-primary-light: #0b57d0;
  --brand-primary-dark: #7cacf8;

  --brand-primary-hover-light: #0842a0;
  --brand-primary-hover-dark: #a8c7fa;

  --brand-on-primary-light: #ffffff;
  --brand-on-primary-dark: #062e6f;

  --brand-tint-light: #e8f0fe;
  --brand-tint-dark: #172554;

  --border-ui-light: #64748b;
  --border-ui-dark: #64748b;

  --border-card-light: #cbd5e1;
  --border-card-dark: #334155;

  --accent-emerald-light: #047857;
  --accent-emerald-dark: #34d399;

  --accent-amber-light: #b45309;
  --accent-amber-dark: #fbbf24;

  --focus-ring-light: #0b57d0;
  --focus-ring-dark: #7cacf8;

  /* Default fallback (light mode) for browsers without light-dark() */
  --bg-canvas: var(--bg-canvas-light);
  --bg-surface: var(--bg-surface-light);
  --bg-subtle: var(--bg-subtle-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
  --brand-primary: var(--brand-primary-light);
  --brand-primary-hover: var(--brand-primary-hover-light);
  --brand-on-primary: var(--brand-on-primary-light);
  --brand-tint: var(--brand-tint-light);
  --border-ui: var(--border-ui-light);
  --border-card: var(--border-card-light);
  --accent-emerald: var(--accent-emerald-light);
  --accent-amber: var(--accent-amber-light);
  --color-focus: var(--focus-ring-light);

  @media (prefers-color-scheme: dark) {
    --bg-canvas: var(--bg-canvas-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-subtle: var(--bg-subtle-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-muted: var(--text-muted-dark);
    --brand-primary: var(--brand-primary-dark);
    --brand-primary-hover: var(--brand-primary-hover-dark);
    --brand-on-primary: var(--brand-on-primary-dark);
    --brand-tint: var(--brand-tint-dark);
    --border-ui: var(--border-ui-dark);
    --border-card: var(--border-card-dark);
    --accent-emerald: var(--accent-emerald-dark);
    --accent-amber: var(--accent-amber-dark);
    --color-focus: var(--focus-ring-dark);
  }

  @supports (color: light-dark(white, black)) {
    --bg-canvas: light-dark(var(--bg-canvas-light), var(--bg-canvas-dark));
    --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
    --bg-subtle: light-dark(var(--bg-subtle-light), var(--bg-subtle-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
    --text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));
    --brand-primary: light-dark(var(--brand-primary-light), var(--brand-primary-dark));
    --brand-primary-hover: light-dark(var(--brand-primary-hover-light), var(--brand-primary-hover-dark));
    --brand-on-primary: light-dark(var(--brand-on-primary-light), var(--brand-on-primary-dark));
    --brand-tint: light-dark(var(--brand-tint-light), var(--brand-tint-dark));
    --border-ui: light-dark(var(--border-ui-light), var(--border-ui-dark));
    --border-card: light-dark(var(--border-card-light), var(--border-card-dark));
    --accent-emerald: light-dark(var(--accent-emerald-light), var(--accent-emerald-dark));
    --accent-amber: light-dark(var(--accent-amber-light), var(--accent-amber-dark));
    --color-focus: light-dark(var(--focus-ring-light), var(--focus-ring-dark));
  }

  /* Viewport-wide native theme adaptation (root scrollbars & canvas) */
  color-scheme: light dark;
  accent-color: var(--brand-primary);

  --radius-sm: 0.5rem;
  --radius-md: 0.875rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;
  --container-max: 72rem;
  --prose-max: 52rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Note: Root font-size is intentionally NOT overridden on :root or html so
   <meta name="text-scale" content="scale"> honors OS accessibility text scaling. */
body {
  margin: 0;
  min-block-size: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1 0 auto;
}

img,
svg {
  display: block;
  max-inline-size: 100%;
}

img {
  block-size: auto;
}

a {
  color: var(--brand-primary);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--brand-primary-hover);
}

:where(a:any-link, button, summary, [tabindex="-1"]):focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 0.25rem;
}

/* Visually hidden utility that becomes visible when focused (Skip link) */
.visually-hidden:where(:not(:focus-within, :active)) {
  position: absolute !important;
  clip-path: inset(50%) !important;
  overflow: hidden !important;
  inline-size: 1px !important;
  block-size: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  border: 0 !important;
  white-space: nowrap !important;
}

.skip-link:where(:focus, :focus-visible, :active) {
  position: fixed;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  z-index: 1000;
  padding-block: 0.625rem;
  padding-inline: 1rem;
  background-color: var(--brand-primary);
  color: var(--brand-on-primary);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
}

/* Layout shell */
.container {
  inline-size: 100%;
  max-inline-size: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
}

.prose-container {
  inline-size: 100%;
  max-inline-size: var(--prose-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3vw, 2rem);
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

/* Site Header */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  background-color: var(--bg-surface);
  border-block-end: 1px solid var(--border-card);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.875rem;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.0625rem;
  min-block-size: 2.75rem;
}

.brand-link:hover {
  color: var(--text-primary);
}

.brand-logo {
  inline-size: 2.5rem;
  block-size: 2.5rem;
  aspect-ratio: 1 / 1;
  border-radius: 0.5rem;
  flex-shrink: 0;
}

.brand-wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.primary-nav ul {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav a {
  display: inline-flex;
  align-items: center;
  min-block-size: 2.5rem;
  padding-inline: 0.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
}

.primary-nav a:hover,
.primary-nav a[aria-current="page"] {
  color: var(--brand-primary);
  text-decoration: underline;
}

/* Buttons & CTAs (min 44px target height, >= 3:1 boundary contrast) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-block-size: 2.75rem;
  padding-block: 0.625rem;
  padding-inline: 1.25rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.25;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: var(--brand-on-primary);
  border-color: var(--brand-primary);
}

.btn-primary:hover {
  background-color: var(--brand-primary-hover);
  border-color: var(--brand-primary-hover);
  color: var(--brand-on-primary);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-ui);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
}

.btn-sm {
  min-block-size: 2.5rem;
  padding-block: 0.5rem;
  padding-inline: 1rem;
  font-size: 0.875rem;
}

/* Hero Section */
.hero {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

@media (min-width: 58em) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding-block: 0.35rem;
  padding-inline: 0.875rem;
  background-color: var(--brand-tint);
  color: var(--brand-primary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-pill);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-block-end: 1.25rem;
}

h1 {
  margin-block: 0 1rem;
  font-size: clamp(1.875rem, 1.3rem + 2.2vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin-block: 0 1.75rem;
  font-size: clamp(1.0625rem, 0.98rem + 0.35vw, 1.25rem);
  color: var(--text-secondary);
  max-inline-size: 40rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.875rem;
  margin-block-end: 1.25rem;
}

.trust-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.trust-pills li {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

/* Mock Sidebar Preview Card */
.preview-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 12px 32px -12px rgba(15, 23, 42, 0.16);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block-end: 1rem;
  margin-block-end: 1rem;
  border-block-end: 1px solid var(--border-card);
}

.preview-title-group {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.preview-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding-block: 0.2rem;
  padding-inline: 0.625rem;
  border-radius: var(--radius-pill);
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-card);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 7.5rem), 1fr));
  gap: 0.75rem;
  margin-block-end: 1.25rem;
}

.metric-box {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
}

.metric-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}

.metric-label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-block-start: 0.2rem;
}

.pillar-bars {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.pillar-row-top {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  margin-block-end: 0.3rem;
}

.bar-track {
  inline-size: 100%;
  block-size: 0.5rem;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-pill);
  overflow: clip;
  border: 1px solid var(--border-card);
}

.bar-fill {
  block-size: 100%;
  border-radius: var(--radius-pill);
  background-color: var(--bar-color, var(--brand-primary));
  inline-size: var(--bar-pct, 50%);
}

.preview-footer-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-block-start: 0.875rem;
  border-block-start: 1px solid var(--border-card);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.status-ok {
  color: var(--accent-emerald);
  font-weight: 600;
}

.status-warn {
  color: var(--accent-amber);
  font-weight: 600;
}

/* Sections */
.section {
  padding-block: clamp(2.75rem, 5vw, 4.5rem);
  border-block-start: 1px solid var(--border-card);
}

.section-alt {
  background-color: var(--bg-surface);
}

.section-header {
  max-inline-size: 44rem;
  margin-block-end: 2.25rem;
}

h2 {
  margin-block: 0 0.75rem;
  font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2.125rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
}

.section-lead {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

/* Subgrid-aligned Card Grids */
.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18.5rem), 1fr));
  gap: 1.25rem;
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  grid-row: span 3;
  display: grid;
  /* Same-cascade fallback before subgrid */
  grid-template-rows: auto 1fr auto;
  grid-template-rows: subgrid;
  gap: 0.75rem;
}

.section-alt .card {
  background-color: var(--bg-canvas);
}

.card h3 {
  margin: 0;
  font-size: 1.125rem;
  line-height: 1.3;
}

.card p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--brand-primary);
  padding-block-start: 0.5rem;
  border-block-start: 1px solid var(--border-card);
}

/* Pricing Cards */
.pricing-card-featured {
  border-width: 2px;
  border-color: var(--brand-primary);
}

.price-line {
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.price-sub {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-block-start: 0.25rem;
}

.feature-checklist {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Data Privacy & OAuth Limited Use Callout */
.compliance-box {
  background-color: var(--brand-tint);
  border: 1.5px solid var(--brand-primary);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.compliance-box h2,
.compliance-box h3 {
  margin-block-start: 0;
}

.compliance-list {
  margin-block: 1rem;
  padding-inline-start: 1.25rem;
  color: var(--text-secondary);
}

.compliance-list li + li {
  margin-block-start: 0.5rem;
}

/* Native <details> Accordion */
.faq-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-inline-size: 50rem;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding-inline: 1.25rem;
}

.section-alt .faq-item {
  background-color: var(--bg-canvas);
}

.faq-item summary {
  cursor: pointer;
  padding-block: 1rem;
  font-weight: 600;
  font-size: 1rem;
  min-block-size: 2.75rem;
}

.faq-body {
  padding-block-end: 1.125rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.faq-body p {
  margin: 0;
}

/* Legal Prose & Data Tables (/privacy, /terms) */
.prose h1 {
  margin-block-end: 0.5rem;
}

.prose-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-block: 0 2rem;
  padding-block-end: 1.25rem;
  border-block-end: 1px solid var(--border-card);
}

.prose h2 {
  font-size: 1.375rem;
  margin-block: 2.25rem 0.75rem;
}

.prose h3 {
  font-size: 1.0625rem;
  margin-block: 1.5rem 0.5rem;
}

.prose p,
.prose li {
  color: var(--text-secondary);
}

.prose ul,
.prose ol {
  padding-inline-start: 1.375rem;
}

.prose li + li {
  margin-block-start: 0.4rem;
}

.prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875em;
  background-color: var(--bg-subtle);
  padding-block: 0.125rem;
  padding-inline: 0.375rem;
  border-radius: 0.25rem;
  border: 1px solid var(--border-card);
}

.table-scroll {
  overflow-x: auto;
  margin-block: 1.5rem;
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
}

table {
  inline-size: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background-color: var(--bg-surface);
}

caption {
  text-align: start;
  font-weight: 600;
  padding: 0.875rem 1rem;
  background-color: var(--bg-subtle);
  border-block-end: 1px solid var(--border-card);
  color: var(--text-primary);
}

th,
td {
  text-align: start;
  vertical-align: top;
  padding: 0.75rem 1rem;
  border-block-end: 1px solid var(--border-card);
}

thead th {
  background-color: var(--bg-subtle);
  font-weight: 600;
  color: var(--text-primary);
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-block-end: 0;
}

/* Site Footer */
.site-footer {
  background-color: var(--bg-surface);
  border-block-start: 1px solid var(--border-card);
  padding-block: 2.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  min-block-size: 2.25rem;
  color: var(--text-secondary);
}

.trademark-note {
  margin-block: 1.25rem 0;
  padding-block-start: 1.25rem;
  border-block-start: 1px solid var(--border-card);
  font-size: 0.8125rem;
}

/* Windows High Contrast / Forced Colors Mode Support */
@media (forced-colors: active) {
  .site-header,
  .site-footer,
  .card,
  .preview-panel,
  .compliance-box,
  .faq-item,
  .metric-box,
  .table-scroll {
    border: 1px solid CanvasText;
  }

  .btn-primary,
  .btn-secondary {
    border: 2px solid ButtonText;
  }

  .bar-track {
    border: 1px solid CanvasText;
  }

  .bar-fill {
    background-color: Highlight;
    forced-color-adjust: none;
  }
}