/* ==========================================
   BizzSoftware Design System
   Anthropic-inspired palette · Inter + Source Serif 4
   v1.0 · 2026-04-26
   ==========================================
   Drop-in stylesheet. Pair with the Google Fonts link:
   <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Source+Serif+4:wght@400;500;600;700&display=swap" rel="stylesheet">
   ========================================== */

/* === DESIGN TOKENS === */
:root {
  /* COLOR */
  --bg:                  #F0EEE6;   /* Anthropic kraft / cream — main */
  --bg-elev:             #F7F5EE;   /* slightly elevated cream */
  --bg-warm:             #E5D5BD;   /* warm tan — section break tone */
  --bg-warm-soft:        #ECDDC8;   /* lighter warm tan */
  --bg-inverted:         #1F1F1E;   /* warm near-black */
  --fg:                  #1F1F1E;
  --fg-on-inverted:      #F0EEE6;
  --accent:              #CC785C;   /* Anthropic coral / rust */
  --subtle:              #6B6B66;   /* warm gray */
  --subtle-on-inverted:  rgba(240, 238, 230, 0.65);
  --border:              rgba(31, 31, 30, 0.12);
  --border-soft:         rgba(31, 31, 30, 0.06);
  --border-on-inverted:  rgba(240, 238, 230, 0.15);

  /* TYPOGRAPHY */
  --font-display: 'Inter', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-body:    'Source Serif 4', Georgia, 'Times New Roman', Times, serif;
  --font-ui:      'Inter', system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;

  /* TYPE SCALE */
  --text-xs:   11px;
  --text-sm:   13px;
  --text-base: 16px;
  --text-md:   17px;
  --text-lg:   19px;
  --text-xl:   22px;
  --text-2xl:  clamp(20px, 2vw, 28px);
  --text-3xl:  clamp(28px, 3vw, 40px);
  --text-4xl:  clamp(32px, 4vw, 52px);
  --text-5xl:  clamp(40px, 5vw, 68px);

  /* LINE HEIGHT */
  --lh-tight:   1.05;
  --lh-display: 1.1;
  --lh-body:    1.55;
  --lh-loose:   1.65;

  /* SPACING */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* RADII */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 12px;

  /* CONTAINER */
  --container-max: 1280px;
  --read-col-max:  720px;

  /* TIMING */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
}

/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: var(--bg);
  color: var(--fg);
}

img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

/* === LAYOUT === */
.container  { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--space-16); }
.read-col   { max-width: var(--read-col-max); margin: 0 auto; }
.section    { padding: var(--space-24) 0; }
.section-sm { padding: var(--space-16) 0; }

/* === TYPOGRAPHY ===
   Display = Inter (headlines, sans-bold)
   Body    = Source Serif 4 (paragraph copy, serif)
   UI      = Inter (chrome, labels, buttons)
*/

/* Display — sans bold, for headlines */
.display          { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; line-height: var(--lh-display); color: var(--fg); }
.display--hero    { font-family: var(--font-display); font-size: clamp(40px, 5vw, 68px);  font-weight: 600; letter-spacing: -0.02em;  line-height: var(--lh-tight);   max-width: 20ch; }
.display--xl      { font-family: var(--font-display); font-size: clamp(36px, 4.5vw, 60px);font-weight: 600; letter-spacing: -0.02em;  line-height: var(--lh-display); max-width: 22ch; }
.display--lg      { font-family: var(--font-display); font-size: var(--text-4xl);        font-weight: 700; letter-spacing: -0.025em; line-height: var(--lh-tight);   max-width: 22ch; }
.display--md      { font-family: var(--font-display); font-size: var(--text-3xl);        font-weight: 700; letter-spacing: -0.02em;  line-height: var(--lh-display); max-width: 22ch; }
.display--sm      { font-family: var(--font-display); font-size: var(--text-xl);         font-weight: 700; letter-spacing: -0.015em; line-height: 1.2; }

/* Body — serif, for paragraph copy */
.text-body        { font-family: var(--font-body); font-weight: 400; font-size: var(--text-md);  line-height: var(--lh-body); color: var(--fg); }
.text-body--lg    { font-family: var(--font-body); font-weight: 400; font-size: var(--text-lg);  line-height: var(--lh-body); max-width: 56ch; }
.text-body--xl    { font-family: var(--font-body); font-weight: 400; font-size: clamp(18px, 1.5vw, 22px); line-height: var(--lh-body); max-width: 56ch; }

/* UI — sans, for chrome */
.text-ui          { font-family: var(--font-ui); font-weight: 500; font-size: var(--text-base); color: var(--fg); }

/* Eyebrow — small caps label, for section labels */
.text-eyebrow     { font-family: var(--font-ui); font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.text-eyebrow--subtle { color: var(--subtle); }
.text-eyebrow--inverted { color: var(--accent); }

/* Meta — small UI text */
.text-meta        { font-family: var(--font-ui); font-size: var(--text-sm); font-weight: 500; color: var(--subtle); letter-spacing: 0.02em; }

/* === COLOR HELPERS === */
.color-fg       { color: var(--fg); }
.color-subtle   { color: var(--subtle); }
.color-accent   { color: var(--accent); }
.color-on-dark  { color: var(--fg-on-inverted); }

.bg-cream       { background: var(--bg); }
.bg-elev        { background: var(--bg-elev); }
.bg-warm        { background: var(--bg-warm); }
.bg-warm-soft   { background: var(--bg-warm-soft); }
.bg-dark        { background: var(--bg-inverted); color: var(--fg-on-inverted); }

/* === LINKS === */
a { color: var(--fg); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--accent); }

.link-accent { color: var(--accent); font-weight: 600; }
.link-accent:hover { filter: brightness(0.9); }

.link-arrow { font-family: var(--font-ui); font-weight: 600; color: var(--fg); transition: color var(--transition-fast); }
.link-arrow:hover { color: var(--accent); }

/* === BUTTONS === */
.btn {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  letter-spacing: -0.005em;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-block;
  line-height: 1.2;
}
.btn--primary             { background: var(--fg); color: var(--bg); }
.btn--primary:hover       { filter: brightness(1.15); color: var(--bg); }
.btn--secondary           { background: transparent; border-color: var(--fg); color: var(--fg); }
.btn--secondary:hover     { background: var(--fg); color: var(--bg); }
.btn--lg                  { font-size: 17px; padding: 16px 32px; }
.btn--sm                  { font-size: var(--text-sm); padding: 8px 16px; }

/* On inverted backgrounds */
.btn--primary-on-dark           { background: var(--bg); color: var(--fg); }
.btn--primary-on-dark:hover     { filter: brightness(0.95); }
.btn--secondary-on-dark         { background: transparent; border-color: var(--bg); color: var(--bg); }
.btn--secondary-on-dark:hover   { background: var(--bg); color: var(--fg); }

/* === NAV === */
.nav {
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 50;
  backdrop-filter: blur(8px);
}
.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: var(--space-4) var(--space-16);
  max-width: var(--container-max);
  margin: 0 auto;
  gap: var(--space-6);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: gap 300ms ease;
}
.brand-logo   { height: 36px; width: auto; display: block; flex-shrink: 0; }
.brand-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--fg);
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  max-width: 200px;
  opacity: 1;
  transition: max-width 400ms cubic-bezier(0.4, 0, 0.2, 1), opacity 300ms ease 50ms;
}
.nav.is-scrolled .brand-wordmark {
  max-width: 0;
  opacity: 0;
  transition: max-width 350ms cubic-bezier(0.4, 0, 0.2, 1) 50ms, opacity 200ms ease;
}
.nav.is-scrolled .brand { gap: 0; }
.nav-links    { display: flex; align-items: center; justify-content: center; gap: var(--space-8); }
.nav-link     { font-family: var(--font-ui); font-size: 15px; font-weight: 500; color: var(--fg); text-decoration: none; transition: color var(--transition-fast); }
.nav-link:hover { color: var(--accent); }
.nav-cta {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  background: var(--fg);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: filter var(--transition-fast);
}
.nav-cta:hover { filter: brightness(1.15); }

/* === MOBILE NAV TOGGLE === */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
}
.nav-toggle-bars { display: block; position: absolute; left: 50%; top: 50%; width: 22px; height: 2px; margin-left: -11px; margin-top: -1px; background: var(--fg); transition: background 150ms ease; }
.nav-toggle-bars::before,
.nav-toggle-bars::after { content: ''; position: absolute; left: 0; width: 22px; height: 2px; background: var(--fg); transition: transform var(--transition-base); }
.nav-toggle-bars::before { transform: translateY(-7px); }
.nav-toggle-bars::after  { transform: translateY(7px); }
.nav.is-open .nav-toggle-bars                  { background: transparent; }
.nav.is-open .nav-toggle-bars::before          { transform: translateY(0) rotate(45deg); }
.nav.is-open .nav-toggle-bars::after           { transform: translateY(0) rotate(-45deg); }

/* === RESPONSIVE GRID HELPERS === */
.deep-dive-grid    { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: var(--space-14); align-items: start; }
.insights-grid--3  { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); }
.btn-row           { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.contact-grid      { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: var(--space-16); align-items: start; }
.input-row-2       { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }

/* === BREADCRUMB === */
.breadcrumb           { padding: var(--space-8) 0 0; }
.breadcrumb a         { font-family: var(--font-ui); font-size: 13px; font-weight: 500; color: var(--subtle); text-decoration: none; letter-spacing: 0.02em; transition: color var(--transition-fast); }
.breadcrumb a:hover   { color: var(--accent); }
.breadcrumb-separator { font-family: var(--font-ui); font-size: 13px; color: var(--subtle); margin: 0 var(--space-2); }
.breadcrumb-current   { color: var(--fg); }

/* === CARDS === */
.card {
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: border-color var(--transition-base), transform var(--transition-base);
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }

.card--inverted {
  background: var(--bg-inverted);
  color: var(--fg-on-inverted);
  border: none;
  padding: var(--space-16) var(--space-12);
  border-radius: var(--radius-lg);
}

/* === GRID PATTERNS === */
.grid-hairline {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.grid-hairline > * { background: var(--bg); }
.grid-hairline > *:hover { background: var(--bg-elev); }

/* === LOGO STRIP (trusted-by) === */
.logo-strip {
  display: flex;
  align-items: center;
  gap: var(--space-14);
  flex-wrap: wrap;
  justify-content: center;
}
.client-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  opacity: 0.55;
  filter: grayscale(1) brightness(0.35);
  transition: opacity var(--transition-base), filter var(--transition-base);
}
.client-logo:hover { opacity: 1; filter: grayscale(1) brightness(0.15); }

/* Logos on dark / inverted backgrounds — invert to white */
.card--inverted .client-logo,
.bg-dark .client-logo {
  filter: grayscale(1) brightness(0) invert(1);
  opacity: 0.6;
}
.card--inverted .client-logo:hover,
.bg-dark .client-logo:hover {
  opacity: 1;
  filter: grayscale(1) brightness(0) invert(1);
}

/* === MARQUEE === */
.marquee {
  overflow: hidden;
  position: relative;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
}
.marquee-track {
  display: flex;
  align-items: center;
  gap: 80px;
  animation: marquee-scroll 40s linear infinite;
  width: max-content;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee .client-logo {
  flex-shrink: 0;
  height: 36px;
  max-width: 160px;
}
@keyframes marquee-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* === CAPABILITY CARDS (gap-based, no hairline-grey) === */
.capability-deck {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 1000px) {
  .capability-deck { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .capability-deck { grid-template-columns: 1fr; }
}
.capability-deck--four { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
@media (max-width: 1200px) {
  .capability-deck--four { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .capability-deck--four { grid-template-columns: 1fr; }
}
.capability-card--compact { padding: 24px; gap: 10px; }
.capability-card--compact h3 { font-size: clamp(18px, 1.45vw, 22px); }
.capability-card--compact p { font-size: 14px; line-height: 1.5; }
.capability-card {
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-decoration: none;
  color: var(--fg);
  transition: border-color var(--transition-base), transform var(--transition-base), background var(--transition-base);
}
.capability-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  background: var(--bg-warm-soft);
  color: var(--fg);
}
.capability-card .link-arrow { margin-top: auto; padding-top: 16px; }
/* On warm bg sections, capability cards use cream */
.bg-warm .capability-card,
.bg-warm-soft .capability-card { background: var(--bg); }
.bg-warm .capability-card:hover,
.bg-warm-soft .capability-card:hover { background: var(--bg-elev); }

/* === METRIC BAND (inverted card with stats) === */
.metric-band         { background: var(--fg); color: var(--bg); border-radius: var(--radius-lg); padding: var(--space-14) var(--space-12); }
.metric-grid         { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-8) var(--space-6); }
.metric-grid > *     { min-width: 0; }
.metric-num          { font-family: var(--font-display); font-size: clamp(28px, 2.6vw, 40px); font-weight: 800; color: var(--accent); letter-spacing: -0.02em; line-height: 1.1; margin-bottom: var(--space-2); overflow-wrap: break-word; }
.metric-label        { font-family: var(--font-ui); font-size: 14px; font-weight: 500; color: rgba(240, 238, 230, 0.65); line-height: 1.4; }

/* === PULL QUOTE === */
.pullquote {
  font-family: var(--font-body);
  font-size: clamp(28px, 3.2vw, 44px);
  font-weight: 400;
  font-style: italic;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--fg);
  max-width: 24ch;
  position: relative;
}
.pullquote::before {
  content: '\201C';
  font-family: var(--font-body);
  color: var(--accent);
  font-size: 1.4em;
  position: absolute;
  left: -0.5em;
  top: -0.1em;
  line-height: 1;
}
.pullquote-attr { font-family: var(--font-ui); font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--subtle); margin-top: var(--space-6); }

/* === ACCENT EFFECTS === */
.accent-underline {
  text-decoration: underline;
  text-decoration-thickness: 4px;
  text-underline-offset: 8px;
}
.accent-color { color: var(--accent); }

/* === FOOTER === */
.footer        { background: var(--bg-inverted); color: var(--fg-on-inverted); padding: var(--space-16) 0 var(--space-8); }
.footer-grid   { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-12); margin-bottom: var(--space-12); }
.footer-brand  { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; letter-spacing: -0.02em; margin-bottom: var(--space-3); }
.footer-tag    { font-family: var(--font-body); font-size: 15px; color: rgba(240, 238, 230, 0.75); line-height: var(--lh-body); max-width: 32ch; }
.footer-col h4 { font-family: var(--font-ui); font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(240, 238, 230, 0.55); margin-bottom: var(--space-4); }
.footer-col a  { display: block; font-family: var(--font-ui); font-size: 14px; color: var(--bg); text-decoration: none; padding: 6px 0; transition: color var(--transition-fast); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border-on-inverted);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: rgba(240, 238, 230, 0.55);
}

/* === RESPONSIVE === */
@media (max-width: 880px) {
  .container          { padding: 0 var(--space-6); }
  .nav-inner          { display: flex; align-items: center; padding: var(--space-4) var(--space-6); gap: var(--space-3); }
  .brand              { margin-right: auto; }
  .nav-toggle         { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-3) var(--space-6) var(--space-6);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
    z-index: 49;
  }
  .nav.is-open .nav-links { display: flex; }
  .nav-link {
    padding: 14px 0;
    font-size: 17px;
    border-top: 1px solid var(--border-soft);
  }
  .nav-link:first-child { border-top: none; }
  .footer-grid        { grid-template-columns: 1fr 1fr; }
  .footer-bottom      { flex-direction: column; gap: var(--space-2); align-items: flex-start; }
  .metric-band        { padding: var(--space-10) var(--space-6); }
  .logo-strip         { gap: var(--space-8); }
  .section            { padding: var(--space-16) 0; }
  .deep-dive-grid     { grid-template-columns: 1fr; gap: var(--space-8); }
  .insights-grid--3   { grid-template-columns: 1fr; }
  .contact-grid       { grid-template-columns: 1fr; gap: var(--space-12); }
  .input-row-2        { grid-template-columns: 1fr; }
  /* Hero headline tightens on mobile so 20ch max-width doesn't enforce a too-narrow column */
  .display--hero      { max-width: none; }
}

@media (max-width: 480px) {
  .footer-grid        { grid-template-columns: 1fr; }
  .brand-wordmark     { display: none; }
  .nav-cta            { padding: 8px 14px; font-size: 13px; }
}