/* ============================================================
   FraudMap — design tokens
   Investigative-forensics aesthetic: near-black slate surfaces,
   amber accent reserved for flagged leads, monospace for data.
   ============================================================ */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 1rem + 6vw, 6.5rem);

  /* Spacing (4px system) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius — sharp, forensic; not bubbly */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  --transition-interactive: 160ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1240px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Arial Narrow', sans-serif;
  --font-body: 'Geist', 'Inter', sans-serif;
  --font-mono: 'Geist Mono', 'JetBrains Mono', 'Menlo', monospace;
}

/* ---------------- DARK (default) ---------------- */
:root,
[data-theme='dark'] {
  --color-bg: #0a0d10;
  --color-surface: #10141a;
  --color-surface-2: #151a21;
  --color-surface-offset: #1a2029;
  --color-surface-offset-2: #202834;
  --color-surface-dynamic: #262f3b;
  --color-divider: #1f2630;
  --color-border: #2a333f;

  --color-text: #e7ebef;
  --color-text-muted: #8d99a8;
  --color-text-faint: #576274;
  --color-text-inverse: #0a0d10;

  /* Primary accent — cool signal blue-teal for links/UI (not the lead-flag amber) */
  --color-primary: #5ec8d8;
  --color-primary-hover: #85d6e2;
  --color-primary-active: #3fa8b8;
  --color-primary-highlight: #16323a;

  /* Amber/orange — reserved strictly for flagged leads/anomalies */
  --color-lead: #ffa53c;
  --color-lead-hover: #ffb75f;
  --color-lead-active: #e8901f;
  --color-lead-highlight: #2e2213;

  --color-success: #5fb488;
  --color-success-highlight: #16261f;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.35);
  --shadow-md: 0 8px 20px oklch(0 0 0 / 0.45);
  --shadow-lg: 0 20px 48px oklch(0 0 0 / 0.55);
}

/* ---------------- LIGHT ---------------- */
[data-theme='light'] {
  --color-bg: #f3f4f6;
  --color-surface: #ffffff;
  --color-surface-2: #fbfbfc;
  --color-surface-offset: #eceef1;
  --color-surface-offset-2: #e3e6ea;
  --color-surface-dynamic: #d8dce2;
  --color-divider: #dde1e6;
  --color-border: #cbd1d9;

  --color-text: #12161b;
  --color-text-muted: #4c5768;
  --color-text-faint: #8993a3;
  --color-text-inverse: #f3f4f6;

  --color-primary: #0e7c8f;
  --color-primary-hover: #0a6371;
  --color-primary-active: #084e59;
  --color-primary-highlight: #d9eef1;

  --color-lead: #b3610a;
  --color-lead-hover: #944f07;
  --color-lead-active: #773f05;
  --color-lead-highlight: #fbe8d1;

  --color-success: #2f7a53;
  --color-success-highlight: #dcefe3;

  --shadow-sm: 0 1px 2px oklch(0.2 0.02 250 / 0.08);
  --shadow-md: 0 8px 20px oklch(0.2 0.02 250 / 0.1);
  --shadow-lg: 0 20px 48px oklch(0.2 0.02 250 / 0.14);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
  }
}

/* ============================================================
   Base type & layout
   ============================================================ */

body {
  background:
    radial-gradient(ellipse 900px 500px at 12% -8%, oklch(from var(--color-primary) l c h / 0.07), transparent 60%),
    var(--color-bg);
}

.font-mono {
  font-family: var(--font-mono);
}

.wrap {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.wrap--narrow {
  max-width: var(--content-default);
}

section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  color: var(--color-primary-hover);
}

/* ============================================================
   Header
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--color-divider);
  background: oklch(from var(--color-bg) l c h / 0.82);
  backdrop-filter: blur(14px);
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.site-header--hidden {
  transform: translateY(-100%);
}
.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.logo-lockup {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
}
.logo-lockup svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}
.logo-wordmark {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.logo-wordmark .dim {
  color: var(--color-text-muted);
  font-weight: 500;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.main-nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
.main-nav a:hover {
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav-mobile-toggle {
  display: none;
  width: 36px;
  height: 36px;
  place-items: center;
  color: var(--color-text);
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--color-lead);
  color: #1a1204;
}
.btn--primary:hover {
  background: var(--color-lead-hover);
}
.btn--primary:active {
  background: var(--color-lead-active);
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
  background: var(--color-surface-offset);
}
.btn--ghost:hover {
  border-color: var(--color-text-faint);
  background: var(--color-surface-offset-2);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* ============================================================
   Hero
   ============================================================ */

.hero {
  padding-top: clamp(var(--space-16), 10vw, var(--space-24));
  padding-bottom: clamp(var(--space-12), 6vw, var(--space-20));
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(var(--space-10), 6vw, var(--space-20));
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-lead);
  border: 1px solid oklch(from var(--color-lead) l c h / 0.35);
  background: var(--color-lead-highlight);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-lead);
  box-shadow: 0 0 0 3px oklch(from var(--color-lead) l c h / 0.25);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}
.hero h1 em {
  font-style: normal;
  color: var(--color-lead);
}

.hero-lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-bottom: var(--space-8);
}
.hero-lede strong {
  color: var(--color-text);
  font-weight: 600;
}

.hero-flow-path {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-10);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-1);
}
.hero-flow-path span {
  color: var(--color-text-muted);
}

.hero-ctas {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
}

/* ============================================================
   Lead badge — trust principle
   ============================================================ */

.lead-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-lead);
  background: var(--color-lead-highlight);
  border: 1px dashed oklch(from var(--color-lead) l c h / 0.5);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}
.lead-badge svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ============================================================
   Section headers
   ============================================================ */

.section-head {
  max-width: 62ch;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  display: block;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 650;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-head p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* ============================================================
   Diagram / Flow visualization panel
   ============================================================ */

.flow-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.flow-panel-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface-2);
}

.flow-panel-bar .dots {
  display: flex;
  gap: var(--space-2);
}
.flow-panel-bar .dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-surface-dynamic);
}

.flow-panel-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

.flow-panel-body {
  padding: var(--space-2);
}

.flow-panel-body svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   Node / edge labels inside SVG diagrams (styled via CSS classes
   applied to text/rect elements within inline SVG)
   ============================================================ */

.node-label {
  font-family: var(--font-body);
  font-size: 10px;
  font-weight: 600;
  fill: var(--color-text);
}
.node-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  fill: var(--color-text-faint);
}
.node-amount {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  fill: var(--color-text-muted);
}
.node-amount--lead {
  fill: var(--color-lead);
  font-weight: 700;
}
.flow-edge {
  stroke: var(--color-border);
  fill: none;
}
.flow-edge--lead {
  stroke: var(--color-lead);
}
.node-box {
  fill: var(--color-surface-offset);
  stroke: var(--color-border);
}
.node-box--lead {
  stroke: var(--color-lead);
}

/* ============================================================
   Feature narrative blocks (Pattern Engine / Who Benefits)
   ============================================================ */

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-10), 6vw, var(--space-16));
  align-items: center;
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  border-top: 1px solid var(--color-divider);
}
.feature-block:first-of-type {
  border-top: none;
}
.feature-block--reverse .feature-copy {
  order: 2;
}
.feature-block--reverse .feature-visual {
  order: 1;
}

.feature-copy .section-kicker {
  margin-bottom: var(--space-3);
}

.feature-copy h3 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.feature-copy p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.feature-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.feature-list li svg {
  width: 16px;
  height: 16px;
  margin-top: 3px;
  flex-shrink: 0;
  color: var(--color-primary);
}
.feature-list li strong {
  color: var(--color-text);
}

/* ============================================================
   Trust principle callout
   ============================================================ */

.trust-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-8), 5vw, var(--space-12));
  position: relative;
}

.trust-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}

.trust-grid h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 650;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.trust-principles {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.trust-principle {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: start;
}

.trust-principle .num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  padding-top: 2px;
}

.trust-principle p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.trust-principle strong {
  color: var(--color-text);
  display: block;
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
  font-weight: 600;
}

/* ============================================================
   Stats strip
   ============================================================ */

.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
.stat-cell {
  padding: var(--space-6) var(--space-5);
  border-right: 1px solid var(--color-divider);
}
.stat-cell:last-child {
  border-right: none;
}
.stat-value {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  display: block;
  margin-bottom: var(--space-1);
}
.stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ============================================================
   How it works — steps
   ============================================================ */

.steps-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.step-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.step-card .step-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-lead);
  margin-bottom: var(--space-4);
  display: block;
}
.step-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.step-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================================
   Early access / waitlist
   ============================================================ */

.waitlist-section {
  border-top: 1px solid var(--color-divider);
}

.waitlist-panel {
  background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-surface-offset) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 6vw, var(--space-16));
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-10);
  align-items: center;
}

.waitlist-copy h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 650;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}
.waitlist-copy p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.waitlist-input-row {
  display: flex;
  gap: var(--space-3);
}

.waitlist-input-row input[type='email'] {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-sm);
  min-width: 0;
}
.waitlist-input-row input[type='email']::placeholder {
  color: var(--color-text-faint);
}
.waitlist-input-row input[type='email']:focus-visible {
  border-color: var(--color-primary);
}

.waitlist-fine {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.waitlist-form label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============================================================
   Footer
   ============================================================ */

.site-footer {
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand .logo-lockup {
  margin-bottom: var(--space-4);
}
.footer-brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 40ch;
}

.footer-col h4 {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-col a:hover {
  color: var(--color-text);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* ============================================================
   Toast (client-side only, no persistence)
   ============================================================ */

.toast {
  position: fixed;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 220ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}
.toast svg {
  width: 18px;
  height: 18px;
  color: var(--color-success);
  flex-shrink: 0;
}

/* ============================================================
   Reveal-on-scroll (opacity/clip-path only)
   ============================================================ */

.reveal {
  opacity: 0;
  clip-path: inset(12% 0 0 0);
  transition:
    opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
    clip-path 700ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.is-visible {
  opacity: 1;
  clip-path: inset(0 0 0 0);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .feature-block,
  .feature-block--reverse {
    grid-template-columns: 1fr;
  }
  .feature-block--reverse .feature-copy,
  .feature-block--reverse .feature-visual {
    order: initial;
  }
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .waitlist-panel {
    grid-template-columns: 1fr;
  }
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-cell:nth-child(2) {
    border-right: none;
  }
  .stat-cell:nth-child(3),
  .stat-cell:nth-child(4) {
    border-top: 1px solid var(--color-divider);
  }
  .steps-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 720px) {
  .main-nav {
    display: none;
  }
  .nav-mobile-toggle {
    display: grid;
  }
}

@media (max-width: 560px) {
  .waitlist-input-row {
    flex-direction: column;
  }
  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }
}