/* ==========================================================================
   Range - Brand System & Styles
   Domain to Range. The mathematical elegance of meaningful change.
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties - Brand System
   -------------------------------------------------------------------------- */
:root {
  /* Core green palette */
  --forest: #1e3a2f;
  --pine: #2d5a47;
  --sage: #4a7c67;
  --mist: #e8f0ec;

  /* Emphasis colors */
  --ember: #c2410c;
  --gold: #a16207;

  /* Neutrals */
  --ink: #1a1a1a;
  --slate: #5c6b64;
  --stone: #94a39b;
  --paper: #fafbfa;

  /* Leadership palette (warm amber) */
  --lead-100: #fef3e2;
  --lead-200: #fcd9a8;
  --lead-300: #f5b056;
  --lead-400: #d97706;
  --lead-500: #a16207;
  --lead-600: #713f12;

  /* Analytics palette (cool cyan) */
  --analytics-100: #e0f7fa;
  --analytics-200: #b2ebf2;
  --analytics-300: #4dd0e1;
  --analytics-400: #0891b2;
  --analytics-500: #0e7490;
  --analytics-600: #164e63;

  /* Process palette (violet) */
  --process-100: #f3e8ff;
  --process-200: #e9d5ff;
  --process-300: #c084fc;
  --process-400: #9333ea;
  --process-500: #7c3aed;
  --process-600: #5b21b6;

  /* Typography */
  --font-display: 'Latin Modern Roman', 'Crimson Pro', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
}

/* --------------------------------------------------------------------------
   Base Reset & Typography
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--slate);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Display typography - italic serif */
h1, h2, h3, .display {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  color: var(--forest);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

/* Section labels - uppercase sans */
.section-label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--sage);
  display: block;
  margin-bottom: var(--space-md);
}

p {
  margin-bottom: var(--space-sm);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--pine);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--forest);
}

/* --------------------------------------------------------------------------
   Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: 54rem;
}

section {
  padding: var(--space-4xl) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-3xl) 0;
  }
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-md) 0;
  background: rgba(250, 251, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-normal) var(--ease-out),
              background var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  border-bottom-color: var(--mist);
  background: rgba(250, 251, 250, 0.95);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.header__logo svg {
  color: var(--forest);
}

.header__wordmark {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--forest);
}

.header__cta {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--forest);
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--mist);
  border-radius: 2rem;
  transition: all var(--duration-fast) var(--ease-out);
}

.header__cta:hover {
  background: var(--forest);
  border-color: var(--forest);
  color: white;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: calc(var(--space-4xl) + 4rem);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, var(--mist) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(74, 124, 103, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(74, 124, 103, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 48rem;
  padding: 0 var(--space-md);
}

.hero__logo {
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero__logo svg {
  color: var(--forest);
}

.hero__title {
  font-size: clamp(3.5rem, 12vw, 6rem);
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.3s forwards;
}

.hero__tagline {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.125rem, 3vw, 1.375rem);
  color: var(--forest);
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.4s forwards;
}

.hero__description {
  font-size: 1.0625rem;
  color: var(--slate);
  max-width: 36rem;
  margin: 0 auto var(--space-xl);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.5s forwards;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: white;
  background: var(--forest);
  padding: 1rem 2rem;
  border-radius: 3rem;
  transition: all var(--duration-normal) var(--ease-out);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero__cta:hover {
  background: var(--pine);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 58, 47, 0.2);
}

.hero__cta svg {
  transition: transform var(--duration-fast) var(--ease-out);
}

.hero__cta:hover svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Concept Section
   -------------------------------------------------------------------------- */
.concept {
  background: white;
  border-top: 1px solid var(--mist);
  border-bottom: 1px solid var(--mist);
}

.concept__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.concept__quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  color: var(--forest);
  max-width: 40rem;
  margin: 0 auto;
  line-height: 1.6;
}

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

@media (max-width: 768px) {
  .concept__pillars {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.pillar {
  text-align: center;
  padding: var(--space-lg);
}

.pillar__icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto var(--space-md);
  color: var(--sage);
}

.pillar__title {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--forest);
  margin-bottom: var(--space-xs);
}

.pillar__description {
  font-size: 0.9375rem;
  color: var(--slate);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Services Section
   -------------------------------------------------------------------------- */
.services {
  background: var(--paper);
}

.services__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.services__title {
  margin-bottom: var(--space-sm);
}

.services__subtitle {
  font-size: 1.0625rem;
  color: var(--slate);
  max-width: 32rem;
  margin: 0 auto;
}

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

@media (max-width: 1024px) {
  .services__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.service-card {
  background: white;
  border-radius: 0.75rem;
  padding: var(--space-xl);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--mist);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

/* Leadership card */
.service-card--leadership::before {
  background: linear-gradient(90deg, var(--lead-300), var(--lead-500));
}

.service-card--leadership .service-card__icon {
  background: var(--lead-100);
  color: var(--lead-500);
}

/* Analytics card */
.service-card--analytics::before {
  background: linear-gradient(90deg, var(--analytics-300), var(--analytics-500));
}

.service-card--analytics .service-card__icon {
  background: var(--analytics-100);
  color: var(--analytics-500);
}

/* Process card */
.service-card--process::before {
  background: linear-gradient(90deg, var(--process-300), var(--process-500));
}

.service-card--process .service-card__icon {
  background: var(--process-100);
  color: var(--process-500);
}

.service-card__icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.service-card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.service-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.service-card__subtitle {
  font-size: 0.875rem;
  color: var(--stone);
  margin-bottom: var(--space-md);
}

.service-card__list {
  list-style: none;
}

.service-card__list li {
  font-size: 0.9375rem;
  color: var(--slate);
  padding: 0.375rem 0;
  padding-left: 1.25rem;
  position: relative;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.875rem;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--stone);
}

/* --------------------------------------------------------------------------
   Founders Section
   -------------------------------------------------------------------------- */
.founders {
  background: white;
  border-top: 1px solid var(--mist);
}

.founders__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.founders__title {
  margin-bottom: var(--space-sm);
}

.founders__subtitle {
  font-size: 1.0625rem;
  color: var(--slate);
  max-width: 36rem;
  margin: 0 auto;
}

.founders__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .founders__grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }
}

.founder-card {
  display: grid;
  gap: var(--space-lg);
}

.founder-card__image {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--mist) 0%, #d1ddd6 100%);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.founder-card__image::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 30%, rgba(74, 124, 103, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(45, 90, 71, 0.08) 0%, transparent 50%);
}

.founder-card__initials {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 3rem;
  color: var(--sage);
  position: relative;
  z-index: 1;
}

.founder-card__content {
  padding: 0 var(--space-xs);
}

.founder-card__name {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.founder-card__role {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sage);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.founder-card__bio {
  font-size: 0.9375rem;
  color: var(--slate);
  margin-bottom: var(--space-md);
}

.founder-card__highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.founder-card__tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--pine);
  background: var(--mist);
  padding: 0.375rem 0.75rem;
  border-radius: 2rem;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
  background: var(--forest);
  color: white;
  text-align: center;
}

.contact__content {
  max-width: 36rem;
  margin: 0 auto;
}

.contact .section-label {
  color: var(--sage);
}

.contact__title {
  color: white;
  margin-bottom: var(--space-md);
}

.contact__description {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xl);
}

.contact__email {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: white;
  background: rgba(255, 255, 255, 0.1);
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  margin-bottom: var(--space-lg);
  transition: all var(--duration-fast) var(--ease-out);
}

.contact__email:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.contact__location {
  font-size: 0.875rem;
  color: var(--stone);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--ink);
  padding: var(--space-xl) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (max-width: 640px) {
  .footer__inner {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer__logo svg {
  color: white;
}

.footer__wordmark {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  color: white;
}

.footer__domain {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--stone);
}

.footer__domain span {
  color: var(--sage);
}

.footer__copyright {
  font-size: 0.75rem;
  color: var(--stone);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Scroll-triggered animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays for grid items */
.animate-on-scroll:nth-child(1) { transition-delay: 0ms; }
.animate-on-scroll:nth-child(2) { transition-delay: 100ms; }
.animate-on-scroll:nth-child(3) { transition-delay: 200ms; }

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--sage);
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--forest);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 0.25rem;
  z-index: 1000;
  transition: top var(--duration-fast);
}

.skip-link:focus {
  top: var(--space-md);
}