/* ====================================================================
   Whiteboard Venture Partners — site styles
   Mirrors the Figma token system (color · spacing · radius · type).
   Light primary, auto-dark via prefers-color-scheme.
   ==================================================================== */

/* ---- Tokens ---------------------------------------------------------- */
:root {
  /* Color (Light mode) */
  --color-bg-canvas: #FFFFFF;
  --color-bg-elevated: #FAFAFA;
  --color-text-primary: #18181B;
  --color-text-secondary: #52525B;
  --color-text-tertiary: #71717A;
  --color-text-on-inverse: #FFFFFF;
  --color-border-default: #E4E4E7;
  --color-border-strong: #18181B;
  --color-ink: #000000;

  /* Spacing */
  --spacing-3xs: 4px;
  --spacing-2xs: 8px;
  --spacing-xs: 12px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;
  --spacing-4xl: 128px;

  /* Radius */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Type families */
  --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Layout */
  --max-width: 1440px;
  --content-max-width: 800px;
  --nav-height: 80px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-canvas: #18181B;
    --color-bg-elevated: #27272A;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #A1A1AA;
    --color-text-tertiary: #71717A;
    --color-text-on-inverse: #18181B;
    --color-border-default: #27272A;
    --color-border-strong: #FFFFFF;
    --color-ink: #FFFFFF;
  }
}

/* ---- Reset / base --------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg-canvas);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 4px; }
button { font: inherit; cursor: pointer; }

/* ---- Type ramp ------------------------------------------------------ */
.display-xl, .display-lg, .display-md, .heading-lg {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
}
.display-xl { font-size: clamp(48px, 7vw, 84px); line-height: 1.05; letter-spacing: -0.02em; }
.display-lg { font-size: clamp(36px, 5vw, 56px); line-height: 1.1; letter-spacing: -0.015em; }
.display-md { font-size: clamp(28px, 3.5vw, 40px); line-height: 1.15; letter-spacing: -0.01em; }
.heading-lg { font-size: clamp(24px, 2.5vw, 32px); line-height: 1.2; letter-spacing: -0.005em; }

.heading-md, .heading-sm {
  font-family: var(--font-body);
  font-weight: 600;
  margin: 0;
}
.heading-md { font-size: 24px; line-height: 1.3; letter-spacing: -0.0025em; }
.heading-sm { font-size: 18px; line-height: 1.4; }

.body-lg, .body-md, .body-sm { font-family: var(--font-body); font-weight: 400; margin: 0; }
.body-lg { font-size: 18px; line-height: 1.6; }
.body-md { font-size: 16px; line-height: 1.6; }
.body-sm { font-size: 14px; line-height: 1.6; }

.mono-sm, .mono-xs {
  font-family: var(--font-mono);
  font-weight: 400;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.mono-sm { font-size: 13px; line-height: 1.5; }
.mono-xs { font-size: 12px; line-height: 1.5; }

.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }

/* ---- Layout primitives --------------------------------------------- */
.section {
  padding: var(--spacing-4xl) var(--spacing-4xl);
  max-width: var(--max-width);
  margin: 0 auto;
}
.section + .section { border-top: 1px solid var(--color-border-default); }
.section--inverted {
  background: var(--color-ink);
  color: var(--color-text-on-inverse);
  max-width: none;
  border: 0 !important;
}
.section--inverted .text-secondary,
.section--inverted .text-tertiary { color: var(--color-text-on-inverse); opacity: 0.6; }
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.eyebrow {
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-md);
}
.section--inverted .eyebrow { color: var(--color-text-on-inverse); opacity: 0.6; }

/* ---- Top nav -------------------------------------------------------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-default);
  background: var(--color-bg-canvas);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xs);
}
.nav__mark { color: var(--color-ink); }
.nav__wordmark {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.1;
}
.nav__wordmark-line1 { font-size: 18px; letter-spacing: 0.06em; }
.nav__wordmark-line2 { font-size: 11px; letter-spacing: 0.10em; }
.nav__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}
.nav__links {
  display: flex;
  gap: var(--spacing-lg);
}
.nav__link {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
}

/* ---- Buttons -------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  line-height: 1;
  border: 1px solid transparent;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn--primary {
  background: var(--color-ink);
  color: var(--color-text-on-inverse);
}
.btn--primary:hover { opacity: 0.9; }
.btn--secondary {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}
.btn--secondary:hover { background: var(--color-bg-elevated); }
.btn--lg {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 16px;
}
.btn--on-inverse {
  background: transparent;
  border-color: var(--color-text-on-inverse);
  color: var(--color-text-on-inverse);
}
.btn--on-inverse:hover { background: rgba(255,255,255,0.1); }

/* ---- Hero ----------------------------------------------------------- */
.hero h1 { margin-bottom: var(--spacing-lg); }
.hero__sub {
  color: var(--color-text-secondary);
  max-width: 720px;
  font-size: 20px;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}
.hero__ctas {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* ---- Three-column block (First Check Thesis) ----------------------- */
.cols-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}
.col {
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border-default);
}
.col__label {
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}
.col__body {
  color: var(--color-text-secondary);
  font-size: 15px;
}

/* ---- IEMMS card row ------------------------------------------------- */
.stages {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}
.stage {
  padding: var(--spacing-md);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
}
.stage__tag {
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-sm);
}
.stage__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.005em;
  margin: 0 0 var(--spacing-sm);
}
.stage__body {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
}

/* ---- CISO callout (inverted band) ---------------------------------- */
.ciso-section { padding: var(--spacing-4xl) var(--spacing-4xl); }
.ciso-section__inner { max-width: var(--max-width); margin: 0 auto; }
.ciso-section h2 { margin-bottom: var(--spacing-lg); }
.ciso-section .body-lg { max-width: 900px; margin-bottom: var(--spacing-lg); }
.ciso-section .punch {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.005em;
  margin: 0 0 var(--spacing-md);
  max-width: 800px;
}

/* ---- Footer --------------------------------------------------------- */
.footer {
  padding: var(--spacing-xl) var(--spacing-3xl);
  border-top: 1px solid var(--color-border-default);
  background: var(--color-bg-canvas);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}
.footer__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}
.footer__brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.footer__nav, .footer__social {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}
.footer__nav a {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
}
.footer__email {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-text-secondary);
}
.footer__social a {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 13px;
  color: var(--color-text-secondary);
}
.footer__copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border-default);
  padding-top: var(--spacing-md);
}

/* ---- Apply page ----------------------------------------------------- */
.apply-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-xl);
}
.apply-form { padding-top: var(--spacing-lg); border-top: 1px solid var(--color-border-default); }
.apply-form h3 { margin: 0 0 var(--spacing-2xs); }
.apply-form .body-md { color: var(--color-text-secondary); margin-bottom: var(--spacing-md); }
.airtable-embed {
  border: 1px solid var(--color-border-default) !important;
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated) !important;
}

/* ---- Inner page lead ----------------------------------------------- */
.lead {
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.6;
  max-width: var(--content-max-width);
  margin-bottom: var(--spacing-xl);
}
.prose {
  max-width: var(--content-max-width);
  color: var(--color-text-primary);
  font-size: 17px;
  line-height: 1.7;
}
.prose p { margin: 0 0 var(--spacing-md); }
.prose strong { color: var(--color-text-primary); }
.prose h2 { margin-top: var(--spacing-xl); margin-bottom: var(--spacing-md); }

/* ---- Responsive ---------------------------------------------------- */
@media (max-width: 960px) {
  .section { padding: var(--spacing-2xl) var(--spacing-lg); }
  .ciso-section { padding: var(--spacing-2xl) var(--spacing-lg); }
  .footer { padding: var(--spacing-xl) var(--spacing-lg); }
  .nav { padding: 0 var(--spacing-md); }
  .nav__links { gap: var(--spacing-md); }
  .cols-3 { grid-template-columns: 1fr; }
  .stages { grid-template-columns: 1fr; }
  .footer__row { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .nav__links { display: none; }
  .hero__ctas { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; justify-content: center; }
}

/* ---- Print + reduced motion ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}