*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root {
  /* Brand palette — deep navy / teal, sophisticated consultancy feel */
  --blue-50: oklch(96% 0.015 230);
  --blue-100: oklch(92% 0.025 230);
  --blue-200: oklch(85% 0.05 230);
  --blue-300: oklch(75% 0.08 225);
  --blue-400: oklch(62% 0.10 225);
  --blue-500: oklch(52% 0.09 225);
  --blue-600: oklch(42% 0.08 225);
  --blue-700: oklch(34% 0.08 230);
  --blue-800: oklch(28% 0.06 230);
  --blue-900: oklch(20% 0.04 230);

  /* Tinted neutrals — warm slate */
  --neutral-50: oklch(97% 0.004 250);
  --neutral-100: oklch(95% 0.006 240);
  --neutral-200: oklch(90% 0.006 240);
  --neutral-300: oklch(80% 0.006 240);
  --neutral-400: oklch(64% 0.006 240);
  --neutral-500: oklch(52% 0.006 240);
  --neutral-600: oklch(42% 0.008 240);
  --neutral-700: oklch(32% 0.008 240);
  --neutral-800: oklch(24% 0.008 240);
  --neutral-900: oklch(16% 0.010 240);

  /* Accent — warm amber, understated confidence */
  --accent-400: oklch(78% 0.12 75);
  --accent-500: oklch(72% 0.13 70);
  --accent-600: oklch(64% 0.12 70);

  /* Semantic */
  --color-primary: var(--blue-400);
  --color-primary-dark: var(--blue-700);
  --color-accent: var(--accent-500);
  --color-accent-hover: var(--accent-400);
  --color-bg: var(--neutral-50);
  --color-surface: oklch(99% 0.003 240);
  --color-text: var(--neutral-700);
  --color-text-secondary: var(--neutral-500);
  --color-text-heading: var(--neutral-900);
  --color-border: var(--neutral-200);

  /* Typography */
  --font-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;

  /* Spacing (4pt base) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  /* Motion */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-entrance: 700ms;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  font-kerning: normal;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ============================================
   NAV
============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) var(--space-xl);
  transition: background var(--duration-normal) var(--ease-out-quart),
              box-shadow var(--duration-normal) var(--ease-out-quart);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav.scrolled, .nav.nav-solid {
  background: oklch(99% 0.003 240 / 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: opacity var(--duration-normal) var(--ease-out-quart);
}

.nav-logo img {
  height: 28px;
  width: auto;
}

.nav-logo .logo-white { display: block; }
.nav-logo .logo-dark { display: none; }
.nav.scrolled .nav-logo .logo-white,
.nav.nav-solid .nav-logo .logo-white { display: none; }
.nav.scrolled .nav-logo .logo-dark,
.nav.nav-solid .nav-logo .logo-dark { display: block; }

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: oklch(97% 0.005 240);
  text-shadow: 0 1px 3px oklch(0% 0 0 / 0.4);
  transition: color var(--duration-fast) var(--ease-out-quart);
  letter-spacing: 0.01em;
}

.nav.scrolled .nav-links a, .nav.nav-solid .nav-links a { color: var(--color-text-secondary); }
.nav-links a:hover { color: var(--color-primary); }

.nav-cta {
  font-size: 0.8125rem !important;
  font-weight: 600 !important;
  padding: var(--space-sm) var(--space-md);
  background: oklch(55% 0.12 230);
  color: var(--neutral-50) !important;
  border-radius: 6px;
  transition: background var(--duration-fast) var(--ease-out-quart),
              transform var(--duration-fast) var(--ease-out-quart) !important;
}

.nav-cta:hover {
  background: oklch(60% 0.14 230);
  transform: translateY(-1px);
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--neutral-50);
  margin: 5px 0;
  transition: background var(--duration-normal) var(--ease-out-quart);
  border-radius: 1px;
}

.nav.scrolled .nav-mobile-toggle span, .nav.nav-solid .nav-mobile-toggle span {
  background: var(--color-text-heading);
}

/* ============================================
   FOOTER
============================================ */
.footer {
  background: var(--neutral-900);
  padding: var(--space-3xl) var(--space-xl) var(--space-xl);
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid oklch(25% 0.015 240);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer-logo img {
  height: 32px;
  width: auto;
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--neutral-500);
  max-width: 280px;
  line-height: 1.5;
}

.footer-links {
  display: flex;
  gap: var(--space-2xl);
}

.footer-link-group h4 {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--neutral-400);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-md);
}

.footer-link-group ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-link-group a {
  font-size: 0.875rem;
  color: var(--neutral-400);
  transition: color var(--duration-fast) var(--ease-out-quart);
}

.footer-link-group a:hover { color: var(--blue-300); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  font-size: 0.8125rem;
  color: var(--neutral-600);
}

.lang-switcher {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.lang-switcher button {
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--neutral-500);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: color var(--duration-fast) var(--ease-out-quart),
              background var(--duration-fast) var(--ease-out-quart);
}

.lang-switcher button:hover { color: var(--neutral-300); }
.lang-switcher button.active {
  color: var(--blue-300);
  background: oklch(25% 0.015 240);
}

.lang-switcher-divider {
  width: 1px;
  height: 14px;
  background: oklch(30% 0.015 240);
}

/* ============================================
   SHARED RESPONSIVE
============================================ */
@media (max-width: 960px) {
  .footer-top {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 640px) {
  .nav { padding: var(--space-md); }
  .nav-links { display: none; }
  .nav-mobile-toggle { display: block; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: oklch(99% 0.003 240 / 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--space-lg) var(--space-md);
    box-shadow: 0 8px 24px oklch(15% 0.01 240 / 0.1);
  }

  .nav-links.open a { color: var(--color-text); }

  .footer-links {
    flex-direction: column;
    gap: var(--space-xl);
  }
}