/* ============================================
   AGENTIC DESIGN STUDIO
   Refined Tectonic Design System
   ============================================ */

/* CSS Variables - Light Theme Default */
:root {
  /* Stone Colors - Light */
  --stone-100: #FAF9F7;
  --stone-200: #F3F1EE;
  --stone-300: #E8E5E1;
  --stone-400: #D4D0CA;
  --stone-warm: #EBE3DA;

  /* Dark Colors */
  --obsidian: #1A1A1A;
  --charcoal: #2D2D2D;
  --slate: #4A4A4A;
  --gray: #6B6B6B;

  /* Accent Colors */
  --magma: #FF4D00;
  --magma-hover: #E64500;
  --magma-light: rgba(255, 77, 0, 0.1);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --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 */
  --transition-fast: all 0.2s ease;
  --transition-medium: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --stone-100: #0A0A0A;
  --stone-200: #141414;
  --stone-300: #1E1E1E;
  --stone-400: #2A2A2A;
  --stone-warm: #1A1816;

  --obsidian: #FAFAFA;
  --charcoal: #E5E5E5;
  --slate: #B0B0B0;
  --gray: #808080;

  --magma-light: rgba(255, 77, 0, 0.15);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--obsidian);
  background-color: var(--stone-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Subtle texture overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.02;
}

/* Screen reader only utility */
.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;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: transparent;
  transition: var(--transition-medium);
}

.nav.scrolled {
  background: var(--stone-100);
  border-bottom: 1px solid var(--stone-300);
  padding: var(--space-sm) 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--obsidian);
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  color: var(--magma);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--obsidian);
  transition: var(--transition-fast);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--slate);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--obsidian);
}

.nav-cta {
  background: transparent;
  border: 1px solid var(--obsidian);
  padding: var(--space-xs) var(--space-md);
  color: var(--obsidian) !important;
  font-weight: 500 !important;
  transition: var(--transition-fast);
}

.nav-cta:hover,
.nav-cta:focus {
  background: var(--obsidian);
  color: var(--stone-100) !important;
}

/* Theme Switcher */
.theme-switcher {
  background: none;
  border: 1px solid var(--stone-300);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--slate);
  transition: var(--transition-fast);
  border-radius: 4px;
}

.theme-switcher:hover {
  border-color: var(--obsidian);
  color: var(--obsidian);
}

.theme-switcher svg {
  width: 18px;
  height: 18px;
}

.theme-switcher .icon-sun,
.theme-switcher .icon-moon {
  display: none;
}

:root:not([data-theme="dark"]) .theme-switcher .icon-moon {
  display: block;
}

[data-theme="dark"] .theme-switcher .icon-sun {
  display: block;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--stone-100);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
    transition: var(--transition-medium);
    border-left: 1px solid var(--stone-300);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .theme-switcher {
    width: 100%;
    height: auto;
    padding: var(--space-sm);
    justify-content: center;
    gap: var(--space-sm);
  }

  .theme-switcher::after {
    content: 'Switch theme';
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
  }

  .nav-cta {
    width: 100%;
    text-align: center;
    padding: var(--space-sm) var(--space-md);
  }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: var(--space-4xl) var(--space-lg);
  background: var(--stone-100);
}

.hero-content {
  max-width: 800px;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 400;
  line-height: 1.05;
  margin-bottom: var(--space-lg);
  color: var(--obsidian);
}

.hero-headline em {
  font-style: italic;
}

.hero-headline .headline-light {
  display: block;
  margin-left: 0.5em;
  color: var(--slate);
  font-weight: 300;
}

.hero-subheadline {
  font-size: 1.125rem;
  color: var(--slate);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  padding-left: var(--space-md);
  border-left: 2px solid var(--magma);
}

.hero-ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-2xl);
}

.hero-chips {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.chip {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--slate);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.chip::before {
  content: '◆';
  color: var(--magma);
  margin-right: var(--space-xs);
  font-size: 0.5rem;
  vertical-align: middle;
}

.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: var(--space-lg);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--magma);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--space-sm) var(--space-lg);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  border-radius: 4px;
}

.btn-primary {
  background: var(--magma);
  color: white;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--magma-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--magma);
  border: 1px solid var(--stone-400);
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: var(--magma);
  background: var(--magma-light);
}

.btn-arrow {
  transition: transform 0.2s ease;
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ============================================
   MARQUEE
   ============================================ */

.marquee {
  overflow: hidden;
  padding: var(--space-xl) 0;
  background: var(--stone-200);
}

.marquee-inner {
  display: flex;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee-content {
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 300;
  color: var(--stone-400);
  white-space: nowrap;
  padding-right: var(--space-lg);
}

.marquee-content span {
  margin: 0 var(--space-lg);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-25%); }
}

/* ============================================
   SECTIONS
   ============================================ */

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

.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--magma);
  margin-bottom: var(--space-md);
}

.section-label::before {
  content: '';
  width: 2px;
  height: 16px;
  background: var(--magma);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  color: var(--obsidian);
}

.section-title .title-light {
  display: block;
  color: var(--slate);
  font-weight: 300;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--slate);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

/* ============================================
   OUTCOMES SECTION
   ============================================ */

.outcomes {
  background: var(--stone-200);
}

.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.outcome-card {
  background: var(--stone-100);
  padding: var(--space-xl);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
  transition: var(--transition-medium);
  position: relative;
}

.outcome-card::after {
  content: '';
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  width: 8px;
  height: 8px;
  background: var(--magma);
  border-radius: 2px;
  opacity: 0;
  transition: var(--transition-fast);
}

.outcome-card:hover {
  border-color: var(--stone-400);
  box-shadow: var(--shadow-lg);
}

.outcome-card:hover::after {
  opacity: 1;
}

.outcome-icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-md);
  color: var(--magma);
}

.outcome-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--obsidian);
}

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

/* ============================================
   SERVICES SECTION
   ============================================ */

.services {
  background: var(--stone-100);
}

.services-lanes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.service-lane {
  background: var(--stone-100);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-lane-primary {
  border-color: var(--magma);
  border-width: 2px;
}

.lane-header {
  padding: var(--space-xl);
  background: var(--stone-200);
  border-bottom: 1px solid var(--stone-300);
}

.lane-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--magma);
  margin-bottom: var(--space-sm);
}

.lane-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

.lane-desc {
  font-size: 0.9375rem;
  color: var(--slate);
}

.service-items {
  padding: var(--space-md);
  flex: 1;
}

.service-item {
  padding: var(--space-md);
  border-bottom: 1px solid var(--stone-300);
}

.service-item:last-child {
  border-bottom: none;
}

.service-item h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

.service-item p {
  font-size: 0.875rem;
  color: var(--slate);
  line-height: 1.5;
}

.lane-footer {
  padding: var(--space-md) var(--space-xl);
  background: var(--stone-200);
  font-size: 0.875rem;
  color: var(--slate);
  border-top: 1px solid var(--stone-300);
}

.best-for {
  color: var(--magma);
  font-weight: 600;
}

/* ============================================
   MICRO-LINE SECTION
   ============================================ */

.micro-line-section {
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
  background: var(--stone-100);
}

.micro-line {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 400;
  font-style: italic;
  color: var(--slate);
}

/* ============================================
   ENGAGEMENT SECTION
   ============================================ */

.engagements {
  background: var(--stone-200);
}

.engagement-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.engagement-card {
  background: var(--stone-100);
  padding: var(--space-xl);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-medium);
}

.engagement-card:hover {
  box-shadow: var(--shadow-lg);
}

.engagement-card-featured {
  border-color: var(--magma);
  border-width: 2px;
}

.engagement-header {
  margin-bottom: var(--space-md);
}

.engagement-duration {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--magma);
  margin-bottom: var(--space-xs);
}

.engagement-header h3 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--obsidian);
}

.engagement-desc {
  font-size: 0.9375rem;
  color: var(--slate);
  margin-bottom: var(--space-lg);
}

.engagement-outputs {
  flex-grow: 1;
  margin-bottom: var(--space-lg);
}

.engagement-outputs h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate);
  margin-bottom: var(--space-sm);
}

.engagement-outputs ul {
  list-style: none;
}

.engagement-outputs li {
  font-size: 0.9375rem;
  color: var(--obsidian);
  padding: var(--space-xs) 0;
  padding-left: var(--space-md);
  position: relative;
}

.engagement-outputs li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--magma);
  font-size: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
}

.engagement-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--stone-100);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
}

.meta-item h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

.meta-item p {
  font-size: 0.875rem;
  color: var(--slate);
  line-height: 1.6;
}

/* ============================================
   APPROACH SECTION
   ============================================ */

.approach {
  background: var(--stone-100);
}

.approach-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.approach-step {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
  padding: var(--space-lg);
  background: var(--stone-200);
  border-radius: 8px;
  transition: var(--transition-medium);
}

.approach-step:hover {
  background: var(--stone-300);
}

.step-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--magma);
  line-height: 1;
  min-width: 48px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

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

/* ============================================
   USE CASES SECTION
   ============================================ */

.use-cases {
  background: var(--stone-200);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.use-case-tile {
  background: var(--stone-100);
  padding: var(--space-lg);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
  transition: var(--transition-medium);
}

.use-case-tile:hover {
  border-color: var(--stone-400);
  box-shadow: var(--shadow-md);
}

.use-case-tile h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

.use-case-tile p {
  font-size: 0.875rem;
  color: var(--slate);
  line-height: 1.5;
}

/* ============================================
   DIFFERENTIATORS SECTION
   ============================================ */

.differentiators {
  background: var(--stone-100);
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.diff-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.diff-marker {
  width: 8px;
  height: 8px;
  min-width: 8px;
  background: var(--magma);
  margin-top: 8px;
  transform: rotate(45deg);
}

.diff-content h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

.diff-content p {
  font-size: 0.875rem;
  color: var(--slate);
  line-height: 1.6;
}

/* ============================================
   WORK SECTION
   ============================================ */

.work {
  background: var(--stone-200);
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.work-item {
  background: var(--stone-100);
  padding: var(--space-xl);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
}

.work-type {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--magma);
  margin-bottom: var(--space-sm);
}

.work-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-sm);
}

.work-item p {
  font-size: 0.875rem;
  color: var(--slate);
  line-height: 1.6;
}

.work-note {
  font-size: 0.875rem;
  color: var(--slate);
  text-align: center;
  font-style: italic;
  margin-bottom: var(--space-xl);
}

.principles {
  background: var(--stone-100);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--stone-300);
  border-radius: 8px;
}

.principles h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--obsidian);
  margin-bottom: var(--space-lg);
}

.principles-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.principle {
  background: var(--stone-200);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 4px;
}

.principle span {
  font-size: 0.875rem;
  color: var(--obsidian);
}

/* ============================================
   FAQ SECTION
   ============================================ */

.faq {
  background: var(--stone-100);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--stone-300);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  color: var(--obsidian);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.faq-question:hover {
  color: var(--magma);
}

.faq-question span {
  flex: 1;
  padding-right: var(--space-md);
}

.faq-icon {
  flex-shrink: 0;
  color: var(--slate);
  transition: var(--transition-medium);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--magma);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: var(--transition-medium);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding-bottom: var(--space-lg);
  font-size: 0.9375rem;
  color: var(--slate);
  line-height: 1.7;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact {
  background: var(--stone-200);
}

.contact.contact-warm {
  background: var(--stone-warm);
}

.contact-content {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.contact-header {
  margin-bottom: var(--space-xl);
}

.contact-header .section-label {
  justify-content: center;
}

.contact-header .section-subtitle {
  margin: 0 auto;
}

.contact-form {
  background: var(--stone-100);
  padding: var(--space-xl);
  border: 1px solid var(--stone-300);
  border-radius: 8px;
}

.form-group {
  margin-bottom: var(--space-md);
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--obsidian);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-sm);
  background: var(--stone-200);
  border: 1px solid var(--stone-300);
  border-radius: 4px;
  color: var(--obsidian);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--magma);
  background: var(--stone-100);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-alt {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  color: var(--slate);
}

.form-alt a {
  color: var(--magma);
  text-decoration: none;
  font-weight: 500;
}

.form-alt a:hover {
  text-decoration: underline;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background: var(--obsidian);
  color: var(--stone-400);
  padding: var(--space-4xl) var(--space-lg) var(--space-xl);
}

[data-theme="dark"] .footer {
  background: var(--stone-300);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  max-width: 1200px;
  margin: 0 auto;
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--stone-100);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

[data-theme="dark"] .footer-logo {
  color: var(--obsidian);
}

.footer-logo-icon {
  width: 28px;
  height: 28px;
  color: var(--magma);
}

.footer-tagline {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--stone-400);
}

[data-theme="dark"] .footer-tagline {
  color: var(--slate);
}

.footer-column h4 {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--stone-100);
  margin-bottom: var(--space-md);
}

[data-theme="dark"] .footer-column h4 {
  color: var(--obsidian);
}

.footer-column ul {
  list-style: none;
}

.footer-column li {
  margin-bottom: var(--space-sm);
}

.footer-column a {
  color: var(--stone-400);
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

[data-theme="dark"] .footer-column a {
  color: var(--slate);
}

.footer-column a:hover {
  color: var(--stone-100);
}

[data-theme="dark"] .footer-column a:hover {
  color: var(--obsidian);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding-top: var(--space-xl);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--stone-400);
  letter-spacing: 0.05em;
}

[data-theme="dark"] .footer-copy {
  color: var(--gray);
}

.footer-meta {
  font-size: 0.75rem;
  color: var(--stone-400);
  letter-spacing: 0.05em;
}

[data-theme="dark"] .footer-meta {
  color: var(--gray);
}

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

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

/* ============================================
   SCROLL REVEAL ANIMATIONS
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition-slow);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   FOCUS STATES (Accessibility)
   ============================================ */

:focus-visible {
  outline: 2px solid var(--magma);
  outline-offset: 2px;
}

button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
  .section {
    padding: var(--space-2xl) 0;
  }

  .hero {
    padding: var(--space-3xl) var(--space-md) var(--space-2xl);
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-chips {
    flex-direction: column;
    align-items: flex-start;
  }

  .services-lanes {
    grid-template-columns: 1fr;
  }

  .approach-step {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .diff-grid {
    grid-template-columns: 1fr;
  }

  .engagement-meta {
    grid-template-columns: 1fr;
  }

  .marquee-content {
    font-size: 2.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .outcomes-grid,
  .use-cases-grid,
  .engagement-cards {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: var(--space-lg);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  body {
    background: white;
    color: black;
  }

  .nav,
  .marquee,
  body::before {
    display: none;
  }

  .section {
    break-inside: avoid;
  }
}