/* =========================================================
   Design tokens
   ========================================================= */
:root {
  --color-primary: #1C1917;
  --color-on-primary: #FFFFFF;
  --color-secondary: #44403C;
  --color-accent: #A16207;       /* deep gold, light-surface text/links/tags (4.9:1 on white) */
  --color-accent-bright: #F59E0B; /* amber, dark-surface accents/charts (8:1 on primary) */
  --color-on-accent: #FFFFFF;
  --color-background: #FAFAF9;
  --color-foreground: #0C0A09;
  --color-card: #FFFFFF;
  --color-card-foreground: #0C0A09;
  --color-muted: #F1EFEC;
  --color-muted-foreground: #57534E;
  --color-border: #E7E2DE;
  --color-ring: #1C1917;

  --font-heading: 'Outfit', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --container-max: 1120px;

  --duration-fast: 150ms;
  --duration-base: 250ms;
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================
   Reset & base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-foreground);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--space-3);
  color: var(--color-primary);
}

p { margin: 0 0 var(--space-3); }

a {
  color: inherit;
  text-decoration: none;
}

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

ul { list-style: none; margin: 0; padding: 0; }

button {
  font-family: inherit;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

/* Focus visibility */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.contact-section :focus-visible,
.flow-demo :focus-visible,
.marquee-bar :focus-visible {
  outline-color: var(--color-accent-bright);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

/* =========================================================
   Scroll progress bar
   ========================================================= */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--color-accent-bright);
  z-index: 1100;
  transition: width 120ms linear;
}

/* =========================================================
   Scroll reveal
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms var(--ease-standard), transform 600ms var(--ease-standard);
  transition-delay: var(--delay, 0ms);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-onload {
  animation: reveal-up 700ms var(--ease-standard) both;
}
.reveal-onload.hero-visual { animation-delay: 120ms; }

@keyframes reveal-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  .reveal-onload { animation: none; }
}

/* =========================================================
   Layout helpers
   ========================================================= */
.section-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.section {
  padding: var(--space-8) 0;
}

.section-muted {
  background: var(--color-muted);
}

.section-head {
  display: flex;
  align-items: flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.section-index {
  font-family: var(--font-mono);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 600;
  line-height: 1;
  color: var(--color-border);
  position: relative;
  padding-bottom: var(--space-2);
}
.section-index::after {
  content: '';
  position: absolute;
  left: 2px;
  bottom: 0;
  width: 40px;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--color-secondary) 0 3px, transparent 3px 8px);
  opacity: 0.5;
}

.section-head .section-title { margin-bottom: 0; }
.section-head .section-kicker { margin-bottom: var(--space-1); }

.section-kicker {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-2);
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: var(--space-6);
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-5);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  white-space: nowrap;
  transition: background var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-pill { border-radius: var(--radius-pill); }

.btn-dark {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: 1px solid var(--color-primary);
}
.btn-dark:hover { background: #000; border-color: #000; box-shadow: 0 10px 24px -10px rgba(28, 25, 23, 0.5); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); background: var(--color-muted); }

.btn-light {
  background: var(--color-on-primary);
  color: var(--color-primary);
  border: 1px solid var(--color-on-primary);
}
.btn-light:hover { background: var(--color-accent-bright); color: var(--color-primary); border-color: var(--color-accent-bright); box-shadow: 0 10px 24px -10px rgba(245, 158, 11, 0.5); }

/* =========================================================
   Header / Nav
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 249, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav-wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-right: auto;
  font-family: var(--font-heading);
  font-weight: 700;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.brand-name {
  font-size: 15px;
  color: var(--color-primary);
}

.primary-nav ul {
  display: flex;
  gap: var(--space-5);
}

.primary-nav a {
  font-weight: 500;
  font-size: 15px;
  color: var(--color-secondary);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard);
}
.primary-nav a:hover { color: var(--color-primary); border-color: var(--color-accent); }

.nav-cta { padding: 0 var(--space-4); min-height: 42px; font-size: 14px; }

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  color: var(--color-primary);
}

.mobile-nav {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-nav a {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-weight: 500;
  font-size: 16px;
  color: var(--color-primary);
  border-radius: var(--radius-sm);
}
.mobile-nav a:hover { background: var(--color-muted); }

.mobile-nav .btn { justify-content: center; }

@media (max-width: 860px) {
  .primary-nav, .nav-cta { display: none; }
  .menu-toggle { display: inline-flex; }
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  padding: var(--space-8) 0 var(--space-7);
  background-image: radial-gradient(circle, rgba(28, 25, 23, 0.08) 1px, transparent 1px);
  background-size: 22px 22px;
  background-position: -8px -8px;
}

.hero-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-7);
  align-items: center;
}

.hero-copy { position: relative; }

.hero-index {
  position: absolute;
  top: -34px;
  left: -6px;
  font-family: var(--font-mono);
  font-size: 130px;
  font-weight: 600;
  color: rgba(28, 25, 23, 0.055);
  z-index: -1;
  user-select: none;
  line-height: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.hero-copy h1 {
  font-size: clamp(34px, 5vw, 56px);
  letter-spacing: -0.02em;
}

.accent-text { color: var(--color-accent); }

.hero-sub {
  font-size: 18px;
  color: var(--color-secondary);
  max-width: 46ch;
  margin-bottom: var(--space-5);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-photo {
  width: 320px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  overflow: hidden;
  box-shadow: 0 24px 48px -16px rgba(28, 25, 23, 0.35);
}

.hero-photo--small {
  width: 220px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
}

.hero-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  filter: url(#duotone-gold);
}

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  box-shadow: 0 10px 30px -12px rgba(28, 25, 23, 0.25);
  transition: transform var(--duration-base) var(--ease-standard);
}

.floating-card svg { color: var(--color-accent); flex-shrink: 0; }

.floating-card--top { top: -8px; left: -16px; }
.floating-card--bottom { bottom: 24px; right: -20px; }

.hero-visual:hover .floating-card--top { transform: translateY(-4px); }
.hero-visual:hover .floating-card--bottom { transform: translateY(4px); }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: left; }
  .hero-visual { order: -1; margin-bottom: var(--space-3); }
  .hero-photo { width: 220px; }
  .floating-card { display: none; }
  .hero-index { font-size: 90px; top: -22px; }
}

/* =========================================================
   Marquee (stock-ticker style)
   ========================================================= */
.marquee-bar {
  background: var(--color-primary);
  color: var(--color-on-primary);
  overflow: hidden;
  padding: var(--space-3) 0;
  border-top: 1px solid rgba(245, 158, 11, 0.25);
  border-bottom: 1px solid rgba(245, 158, 11, 0.25);
}

.marquee-track {
  display: flex;
  gap: var(--space-4);
  white-space: nowrap;
  width: max-content;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  animation: marquee 28s linear infinite;
}

.marquee-track span { color: rgba(255, 255, 255, 0.8); }

.marquee-bar:hover .marquee-track,
.marquee-bar:focus-within .marquee-track {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none; }
}

/* =========================================================
   Case cards
   ========================================================= */
.case-card {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
  transition: transform var(--duration-base) var(--ease-standard),
              box-shadow var(--duration-base) var(--ease-standard);
}
.case-card:last-child { margin-bottom: 0; }

.case-card::before,
.case-card::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-standard);
}
.case-card::before {
  top: -1px; left: -1px;
  border-top: 2px solid var(--color-accent-bright);
  border-left: 2px solid var(--color-accent-bright);
  border-radius: var(--radius-lg) 0 0 0;
}
.case-card::after {
  bottom: -1px; right: -1px;
  border-bottom: 2px solid var(--color-accent-bright);
  border-right: 2px solid var(--color-accent-bright);
  border-radius: 0 0 var(--radius-lg) 0;
}

.case-card:hover,
.case-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -24px rgba(28, 25, 23, 0.3);
}
.case-card:hover::before, .case-card:hover::after,
.case-card:focus-within::before, .case-card:focus-within::after {
  opacity: 1;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.case-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(161, 98, 7, 0.08);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
}

.case-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: center;
}

.case-card--reverse .case-copy { order: 2; }
.case-card--reverse .case-visual { order: 1; }

.case-copy h3 {
  font-size: 22px;
  margin-bottom: var(--space-2);
}

.case-copy p { color: var(--color-secondary); }

.case-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-weight: 600;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
  transition: gap var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}
.case-link:hover { gap: var(--space-2); color: var(--color-accent); }

.case-visual--placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 200px;
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-muted-foreground);
  font-size: 13px;
  font-weight: 500;
  background: var(--color-muted);
}

@media (max-width: 780px) {
  .case-body { grid-template-columns: 1fr; }
  .case-visual { order: -1; }
  .case-card--reverse .case-visual { order: -1; }
  .case-card--reverse .case-copy { order: 0; }
}

/* Flow diagram visual (automation case studies) */
.flow-demo {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}

.dd-header {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

.dd-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
}

.dd-title {
  margin-left: var(--space-2);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.7);
}

.dd-caption {
  margin: var(--space-3) 0 0;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.45);
}

.flow-illustration {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: #000;
}

/* =========================================================
   About
   ========================================================= */
.about-grid {
  display: grid;
  grid-template-columns: 0.4fr 0.6fr;
  gap: var(--space-7);
  align-items: start;
}

.about-side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.about-callout {
  width: 100%;
  border-left: 3px solid var(--color-accent-bright);
  background: var(--color-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-3) var(--space-4);
}

.about-callout-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.about-callout-text {
  font-size: 14px;
  color: var(--color-secondary);
  margin: 0;
}

.credentials-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0 0 var(--space-2);
}

.credential-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: var(--space-1) var(--space-3);
}

.about-subheading {
  font-size: 13px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  margin-top: var(--space-5);
}

.background-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.background-list li:last-child { border-bottom: none; }

.bg-role {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  color: var(--color-primary);
}

.bg-org {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
}
.bg-org em { font-style: normal; color: var(--color-muted-foreground); }

.bg-desc {
  font-size: 14px;
  color: var(--color-secondary);
}

@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-side { flex-direction: row; align-items: center; }
  .hero-photo--small { width: 120px; flex-shrink: 0; }
}
@media (max-width: 480px) {
  .about-side { flex-direction: column; }
}

/* =========================================================
   Contact
   ========================================================= */
.contact-section {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: var(--space-8) 0;
}

.contact-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-kicker--light { color: var(--color-accent-bright); }

.contact-heading {
  color: var(--color-on-primary);
  font-size: clamp(28px, 4.5vw, 44px);
  max-width: 20ch;
}

.contact-sub {
  color: rgba(255, 255, 255, 0.65);
  max-width: 52ch;
  font-size: 17px;
  margin-bottom: var(--space-5);
}

.social-row {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.social-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.85);
  transition: background var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}
.social-icon:hover { background: rgba(245, 158, 11, 0.12); border-color: var(--color-accent-bright); color: var(--color-accent-bright); transform: translateY(-2px); }

.footer-note {
  margin-top: var(--space-7);
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
}