/* ==========================================================================
   LLM'S MARKETING - PREMIUM REDESIGN STYLE SYSTEM
   Vanilla CSS • Premium Dark Editorial • Responsive & High Performance
   ========================================================================== */

/* 1. Imports & Fonts */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Inter:wght@300;400;500;600;700&display=swap');

/* 2. Custom Properties (Design Tokens) */
:root {
  /* Central Design Tokens - Light Premium Editorial Theme */
  --background: #F7F6F2;
  --surface: #FFFFFF;
  --surface-muted: #F1F0EC;

  --text-primary: #171717;
  --text-secondary: #666666;
  --text-muted: #999999;

  --border: #E5E3DE;
  --border-hover: #D0CDC5;

  --accent: #2F80ED;
  --accent-hover: #1b6fd1;
  --accent-glow: rgba(47, 128, 237, 0.08);

  --dark-section: #171717;
  --dark-text: #FFFFFF;
  --dark-text-muted: #A1A1AA;
  --dark-border: rgba(255, 255, 255, 0.08);

  /* Legacy variables compatibility mapping */
  --bg-primary: var(--background);
  --bg-secondary: var(--surface);
  --bg-tertiary: var(--surface-muted);
  --bg-warm-light: var(--surface);
  
  --text-primary-legacy: var(--text-primary);
  --text-secondary-legacy: var(--text-secondary);
  --text-dark: var(--text-primary);
  
  --accent-color: var(--accent);
  --accent-hover-color: var(--accent-hover);
  
  --border-color: var(--border);
  --border-hover-color: var(--border-hover);
  --border-dark: var(--border);

  /* Typography */
  --font-heading: 'Instrument Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout & Animations */
  --max-width: 1200px;
  --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 3. Base Styles & Resets */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--background);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--background);
  color: var(--text-primary);
}

/* Custom Premium Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--background);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* 4. Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-primary);
  text-wrap: balance;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  font-weight: 300;
  letter-spacing: -0.01em;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-fast);
}

/* 5. Shared Layout Components & Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* Core section classes for rhythm layouts */
.section {
  padding: 120px 0;
  position: relative;
  border-bottom: 1px solid var(--border);
  background-color: var(--background);
  color: var(--text-primary);
}

.section-white {
  padding: 120px 0;
  position: relative;
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text-primary);
}

.section-muted {
  padding: 120px 0;
  position: relative;
  border-bottom: 1px solid var(--border);
  background-color: var(--surface-muted);
  color: var(--text-primary);
}

.section-contrast {
  padding: 120px 0;
  position: relative;
  border-bottom: 1px solid var(--dark-border);
  background-color: var(--dark-section);
  color: var(--dark-text);
}

.section-contrast h1, 
.section-contrast h2, 
.section-contrast h3 {
  color: var(--dark-text);
}

.section-contrast p {
  color: var(--dark-text-secondary);
}

.section-contrast .section-label {
  color: var(--accent);
}

.section-contrast .border-accent-line {
  background-color: var(--dark-border);
}

.section-header {
  margin-bottom: 80px;
  max-width: 700px;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-color);
  margin-bottom: 16px;
  display: inline-block;
}

.section-title {
  font-size: 3rem;
  margin-top: 8px;
  font-weight: 500;
  line-height: 1.1;
}

/* 6. Buttons & Interactive Links */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 1px solid transparent;
  letter-spacing: -0.01em;
}

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

.btn-primary:hover {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}

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

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
  background-color: rgba(23, 23, 23, 0.04);
}

/* Button overrides when inside dark contrast section */
.section-contrast .btn-primary {
  background-color: var(--surface);
  color: var(--dark-section);
}

.section-contrast .btn-primary:hover {
  background-color: transparent;
  color: var(--surface);
  border-color: var(--surface);
}

.section-contrast .btn-secondary {
  border-color: var(--dark-border);
  color: var(--dark-text-muted);
}

.section-contrast .btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.03);
  border-color: var(--dark-text);
  color: var(--dark-text);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
}

.link-arrow span {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.link-arrow:hover {
  color: var(--accent);
}

.link-arrow:hover span {
  transform: translateX(6px);
}

/* 7. Header Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  border-bottom: 1px solid transparent;
  padding: 32px 0;
}

.header.scrolled {
  padding: 18px 0;
  background-color: rgba(255, 255, 255, 0.85); /* Slightly translucent white */
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-color);
  border-radius: 50%;
  display: inline-block;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 36px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-link.active {
  color: var(--text-primary);
}

/* Hamburger mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1005;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background-color: var(--text-primary);
  margin: 6px 0;
  transition: var(--transition-fast);
}

/* 8. Hero Section (Editorial Layout) */
.hero {
  padding-top: 200px;
  padding-bottom: 120px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  background-color: var(--background);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: inline-block;
}

.hero-headline {
  font-size: 4.5rem;
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 30px;
  color: var(--text-primary);
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 520px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Premium Web Dashboard Layout Mockup Container */
.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 420px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background-color: var(--surface);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(23, 23, 23, 0.05);
}

.hero-visual-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background-color: rgba(23, 23, 23, 0.02);
}

.hero-visual-dots {
  display: flex;
  gap: 6px;
}

.hero-visual-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-muted);
  opacity: 0.5;
}

.hero-visual-dot:first-child {
  background-color: var(--accent);
  opacity: 0.8;
}

.hero-visual-title {
  font-family: var(--font-body);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.canvas-container {
  width: 100%;
  height: calc(100% - 45px);
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 1;
}

.visual-labels {
  position: absolute;
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--text-secondary);
  pointer-events: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 4px;
  background-color: var(--surface);
  z-index: 2;
  box-shadow: 0 4px 10px rgba(23, 23, 23, 0.03);
}

.label-search { top: 70px; left: 30px; }
.label-engine { bottom: 30px; right: 30px; }

/* 9. Credibility Strip (Social Proof) */
.social-proof {
  padding: 50px 0;
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
}

.social-proof-title {
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 30px;
}

.logos-container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}

.client-logo {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--text-secondary);
  opacity: 0.4;
  transition: var(--transition-fast);
  letter-spacing: -0.01em;
}

.client-logo:hover {
  opacity: 0.85;
  color: var(--text-primary);
}

/* 10. Intro / Positioning Section */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: flex-start;
}

.intro-large-text {
  font-family: var(--font-heading);
  font-size: 2.85rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.intro-right p {
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.intro-right p:last-child {
  margin-bottom: 0;
}

/* 11. Services Section (Editorial List) */
.services-list {
  display: flex;
  flex-direction: column;
  margin-top: 40px;
  border-top: 1px solid var(--border);
}

.service-item {
  display: grid;
  grid-template-columns: 100px 1.5fr 2fr 80px;
  align-items: center;
  padding: 48px 24px;
  border-bottom: 1px solid var(--border);
  transition: var(--transition-smooth);
}

.service-item-num {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: var(--transition-fast);
}

.service-item-title {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition-smooth);
}

.service-item-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 300;
  padding-right: 40px;
}

.service-item-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
  opacity: 0.3;
  transform: translateX(-10px);
  transition: var(--transition-smooth);
  text-align: right;
}

/* Service Item Hover States */
.service-item:hover {
  background-color: var(--surface-muted);
  border-color: var(--border-hover);
  padding-left: 36px;
  padding-right: 12px;
}

.service-item:hover .service-item-num {
  color: var(--accent);
}

.service-item:hover .service-item-title {
  color: var(--text-primary);
  transform: translateX(10px);
}

.service-item:hover .service-item-arrow {
  color: var(--accent);
  opacity: 1;
  transform: translateX(0);
}

/* 12. Signature Interactive AI Search Visibility Section */
.visibility-interactive {
  background-color: var(--bg-primary);
}

.interactive-container {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 80px;
  align-items: center;
}

.interactive-demo {
  border: 1px solid var(--border);
  background-color: var(--surface);
  border-radius: 12px;
  padding: 36px;
  box-shadow: 0 20px 40px rgba(23, 23, 23, 0.05);
  position: relative;
  overflow: hidden;
}

.demo-browser-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 18px;
}

.browser-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border);
}
.browser-dot.red { background-color: rgba(239, 68, 68, 0.4); }
.browser-dot.yellow { background-color: rgba(245, 158, 11, 0.4); }
.browser-dot.green { background-color: rgba(16, 185, 129, 0.4); }

.browser-input {
  flex-grow: 1;
  background-color: var(--background);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.demo-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 30px;
}

.demo-tab-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  border-radius: 100px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.demo-tab-btn.active {
  background-color: var(--text-primary);
  color: var(--background);
  border-color: var(--text-primary);
}

.demo-flow-step {
  padding: 20px;
  border-radius: 8px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  opacity: 0.25;
  transform: translateY(12px);
  transition: var(--transition-smooth);
}

.demo-flow-step:last-child {
  margin-bottom: 0;
}

.demo-flow-step.active {
  opacity: 1;
  transform: translateY(0);
  border-color: var(--accent);
  box-shadow: 0 8px 20px rgba(47, 128, 237, 0.05);
}

.step-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.step-content {
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--text-primary);
}

/* Recommendation Nodes styling inside interactive */
.recommendation-node {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(47, 128, 237, 0.02);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 20px;
}

.recommendation-node .brand-name {
  font-weight: 500;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 1.15rem;
}

/* 13. Metrics / Results Section */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  border-top: 1px solid var(--border);
  padding-top: 60px;
  margin-top: 40px;
}

.metric-item {
  border-left: 1px solid var(--border);
  padding-left: 30px;
  transition: var(--transition-smooth);
}

.metric-number {
  font-family: var(--font-heading);
  font-size: 5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.metric-label {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 300;
}

.metric-item:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

/* 14. Case Studies (Wide Horizontal Layouts) */
.case-studies-list {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.case-study-row {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 80px;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 80px;
}

.case-study-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.case-study-visual {
  height: 380px;
  border: 1px solid var(--border);
  background-color: var(--surface);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 25px rgba(23, 23, 23, 0.03);
}

/* Grid overlay to look premium in light theme */
.case-study-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(23, 23, 23, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 23, 23, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.case-study-visual-tag {
  font-family: var(--font-body);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  text-transform: uppercase;
  z-index: 2;
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 4px;
  background-color: var(--surface);
}

.case-study-row-info {
  padding: 20px 0;
}

.case-study-meta {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  display: inline-block;
}

.case-study-title {
  font-size: 2.25rem;
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--text-primary);
}

.case-study-desc {
  font-size: 1.05rem;
  margin-bottom: 30px;
  color: var(--text-secondary);
}

.case-study-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  border-top: 1px solid var(--border);
  padding-top: 24px;
}

.case-study-stat-val {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 4px;
  font-family: var(--font-heading);
}

.case-study-stat-lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.case-study-row:hover .case-study-visual {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(23, 23, 23, 0.06);
}

/* 15. Testimonials (Premium Quotes Carousel) */
.testimonial-section {
  background-color: var(--background);
}

.testimonial-container {
  max-width: 800px;
  margin: 0 auto;
}

.testimonial-slider {
  position: relative;
  min-height: 220px;
}

.testimonial-slide {
  display: none;
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
}

.testimonial-slide.active {
  display: block;
  opacity: 1;
}

.testimonial-quote {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.45;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 36px;
  position: relative;
  letter-spacing: -0.01em;
}

/* Clean quote design mark */
.testimonial-quote::before {
  content: "“";
  position: absolute;
  left: -40px;
  top: -10px;
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.3;
  font-family: var(--font-heading);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 20px;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 1.05rem;
}

.author-role {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.slider-controls {
  display: flex;
  justify-content: flex-start;
  gap: 12px;
  margin-top: 40px;
  padding-left: 0;
}

.slider-dot {
  width: 24px;
  height: 2px;
  background-color: var(--border-color);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.slider-dot.active {
  background-color: var(--text-primary);
  width: 48px;
}

/* 16. Team Layout (Clean Grid with Premium Placeholder Portraits) */
.team-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.team-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.team-portrait-placeholder {
  height: 220px;
  background-color: var(--surface-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Premium aesthetic portrait design grid */
.team-portrait-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(47, 128, 237, 0.05) 0%, transparent 70%);
}

.team-portrait-placeholder svg {
  width: 44px;
  height: 44px;
  color: var(--text-muted);
  opacity: 0.3;
  transition: var(--transition-smooth);
  z-index: 2;
}

.team-info {
  padding: 20px;
}

.team-name {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.team-role {
  color: var(--accent);
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.team-bio {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  font-weight: 300;
}

.team-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  background-color: var(--surface);
  box-shadow: 0 15px 30px rgba(23, 23, 23, 0.04);
}

.team-card:hover .team-portrait-placeholder svg {
  transform: scale(1.1);
  color: var(--accent);
  opacity: 0.7;
}

/* 17. Why Choose Us Section */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background-color: var(--border);
  border: 1px solid var(--border);
  margin-top: 40px;
}

.why-us-card {
  background-color: var(--surface);
  padding: 48px 36px;
  transition: var(--transition-smooth);
}

.why-us-num {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 24px;
}

.why-us-title {
  font-size: 1.45rem;
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.why-us-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  font-weight: 300;
  color: var(--text-secondary);
}

.why-us-card:hover {
  background-color: var(--surface-muted);
}

/* 18. Process Section (Vertical Timeline) */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 60px auto 0;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 30px;
  height: 100%;
  width: 1px;
  background-color: var(--border);
}

.timeline-item {
  position: relative;
  padding-left: 80px;
  margin-bottom: 60px;
  transition: var(--transition-smooth);
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: 21px;
  top: 6px;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  background-color: var(--background);
  border: 1px solid var(--border);
  z-index: 2;
  transition: var(--transition-smooth);
}

.timeline-num {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-title {
  font-size: 1.65rem;
  font-weight: 500;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.timeline-item:hover .timeline-dot {
  background-color: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

.timeline-item:hover {
  transform: translateX(8px);
}

/* 19. FAQ Section (Minimalist Accordion) */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  outline: none;
}

.faq-question {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.faq-icon {
  position: relative;
  width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  background-color: var(--text-primary);
  transition: transform 0.3s ease;
}

.faq-icon::before {
  width: 100%;
  height: 1px;
}

.faq-icon::after {
  width: 1px;
  height: 100%;
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
}

.faq-answer {
  padding-top: 18px;
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
  font-weight: 300;
}

/* Open states */
.faq-item.active .faq-question {
  color: var(--accent);
}

.faq-item.active .faq-icon::after {
  transform: rotate(90deg);
}

.faq-item.active .faq-icon::before {
  transform: rotate(180deg);
}

.faq-item.active .faq-content {
  max-height: 1000px;
  transition: max-height 0.5s cubic-bezier(0.86, 0, 0.07, 1);
}

/* 20. Final CTA */
.final-cta {
  background-color: var(--dark-section);
  color: var(--dark-text);
  text-align: center;
  padding: 140px 0;
  border-bottom: 1px solid var(--dark-border);
}

.final-cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.final-cta h2 {
  font-size: 3.5rem;
  font-weight: 500;
  margin-bottom: 24px;
  line-height: 1.1;
  color: var(--dark-text);
}

.final-cta p {
  font-size: 1.2rem;
  margin-bottom: 40px;
  color: var(--dark-text-muted);
  font-weight: 300;
}

.final-cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.homepage-contact-form {
  max-width: 760px;
  margin: 64px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--dark-border);
  text-align: left;
}

.homepage-contact-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.homepage-contact-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.homepage-contact-field label {
  color: var(--dark-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.homepage-contact-field input,
.homepage-contact-field textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--dark-border);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--dark-text);
  font: inherit;
  outline: none;
  transition: var(--transition-fast);
}

.homepage-contact-field textarea {
  min-height: 110px;
  resize: vertical;
}

.homepage-contact-field input::placeholder,
.homepage-contact-field textarea::placeholder {
  color: #77777f;
}

.homepage-contact-field input:focus,
.homepage-contact-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.homepage-contact-message {
  grid-column: 1 / -1;
}

.homepage-contact-submit {
  margin-top: 18px;
}

.homepage-contact-note {
  margin-top: 16px;
  color: #77777f;
  font-size: 0.85rem;
  text-align: center;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
}

.final-cta .btn-secondary {
  border-color: var(--dark-border);
  color: var(--dark-text-muted);
}

.final-cta .btn-secondary:hover {
  border-color: var(--dark-text);
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--dark-text);
}

/* 21. Footer */
.footer {
  background-color: var(--dark-section);
  color: var(--dark-text);
  padding: 80px 0 40px;
  font-family: var(--font-body);
  border-top: 1px solid var(--dark-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 80px;
  margin-bottom: 80px;
}

.footer-brand .logo {
  margin-bottom: 20px;
  color: var(--dark-text);
}

.footer-brand p {
  font-size: 0.95rem;
  max-width: 280px;
  color: var(--dark-text-muted);
  font-weight: 300;
}

.footer-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--dark-text);
  margin-bottom: 24px;
  letter-spacing: 0.08em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 14px;
}

.footer-links a {
  font-size: 0.95rem;
  color: var(--dark-text-muted);
  font-weight: 300;
}

.footer-links a:hover {
  color: var(--dark-text);
}

.footer-contact p {
  font-size: 0.95rem;
  margin-bottom: 10px;
  color: var(--dark-text-muted);
  font-weight: 300;
}

.footer-contact a {
  color: var(--dark-text);
}

.footer-contact a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--dark-border);
  padding-top: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--dark-text-muted);
  font-weight: 300;
}

.footer-socials {
  display: flex;
  gap: 20px;
}

.footer-socials a {
  color: var(--dark-text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.footer-socials a:hover {
  color: var(--accent);
}

/* 22. Scroll Entrance Reveals */
.reveal-fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.stagger-1 { transition-delay: 0.12s; }
.stagger-2 { transition-delay: 0.24s; }
.stagger-3 { transition-delay: 0.36s; }
.stagger-4 { transition-delay: 0.48s; }

/* 23. Subpages Layout Details */
.page-header {
  padding: 200px 0 80px;
  border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
  font-size: 4rem;
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.1;
}

.page-header p {
  font-size: 1.25rem;
  max-width: 660px;
  font-weight: 300;
  color: var(--text-secondary);
}

.blog-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
}

.blog-posts-list {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.post-preview-card {
  border-bottom: 1px solid var(--border);
  padding-bottom: 60px;
}

.post-preview-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.post-meta {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  font-weight: 600;
}

.post-title {
  font-size: 2.25rem;
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.2;
}

.post-title a:hover {
  color: var(--accent);
}

.post-excerpt {
  margin-bottom: 24px;
  font-weight: 300;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.sidebar-widget {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 36px;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(23, 23, 23, 0.02);
}

.widget-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  color: var(--text-primary);
  font-weight: 600;
}

.widget-list {
  list-style: none;
}

.widget-list li {
  margin-bottom: 14px;
}

.widget-list li:last-child {
  margin-bottom: 0;
}

.widget-list a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 300;
}

.widget-list a:hover {
  color: var(--accent);
}

/* Post Detailed Template */
.post-detail-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 200px 2rem 100px;
}

.post-header {
  margin-bottom: 50px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 40px;
}

.post-header h1 {
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: 24px;
  font-weight: 500;
}

.post-body {
  font-size: 1.1rem;
  line-height: 1.85;
  color: var(--text-secondary);
  font-weight: 300;
}

.post-body p {
  margin-bottom: 28px;
}

.post-body h2 {
  font-size: 2rem;
  margin: 50px 0 24px;
  color: var(--text-primary);
}

.post-body h3 {
  font-size: 1.5rem;
  margin: 40px 0 20px;
  color: var(--text-primary);
}

.post-body ul {
  padding-left: 24px;
  margin-bottom: 28px;
}

.post-body li {
  margin-bottom: 12px;
}

/* Contact Form Styling */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 80px;
  align-items: flex-start;
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-info-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 2px solid var(--border);
  padding-left: 20px;
  transition: var(--transition-fast);
}

.contact-info-item:hover {
  border-color: var(--accent);
}

.contact-info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

.contact-info-value {
  font-size: 1.45rem;
  color: var(--text-primary);
  font-family: var(--font-heading);
}

.contact-info-value a:hover {
  color: var(--accent);
}

.contact-form-container {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 48px;
  border-radius: 12px;
  box-shadow: 0 15px 30px rgba(23, 23, 23, 0.04);
}

.form-group {
  margin-bottom: 28px;
}

.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 18px;
  font-family: var(--font-body);
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--text-primary);
  background-color: var(--surface);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-notification {
  padding: 16px 20px;
  border-radius: 8px;
  margin-top: 24px;
  font-size: 0.9rem;
  display: none;
  font-weight: 400;
}

.form-notification.success {
  background-color: rgba(16, 185, 129, 0.05);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.15);
}

.form-notification.error {
  background-color: rgba(239, 68, 68, 0.05);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.15);
}

/* Mobile responsive navigation styles */
.mobile-nav-active {
  overflow: hidden;
}

.mobile-nav-active .nav-menu {
  transform: translateX(0);
}

.mobile-nav-active .menu-toggle span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

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

.mobile-nav-active .menu-toggle span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* 24. Responsive Layout Adjustments */
@media (max-width: 1200px) {
  .hero-headline {
    font-size: 3.75rem;
  }
  
  .team-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  
  .hero-visual {
    height: 380px;
  }
  
  .service-item {
    grid-template-columns: 80px 1fr 1.2fr 40px;
  }

  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .why-us-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 80px 0;
  }
  
  .page-header {
    padding: 160px 0 60px;
  }
  
  .page-header h1 {
    font-size: 2.85rem;
  }
  
  .hero {
    padding-top: 150px;
    padding-bottom: 80px;
  }
  
  .hero-headline {
    font-size: 3rem;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    height: 100vh;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    flex-direction: column;
    align-items: flex-start;
    padding: 120px 48px;
    gap: 30px;
    transform: translateX(100%);
    transition: var(--transition-smooth);
    z-index: 1000;
  }

  .nav-link {
    font-size: 1.1rem;
  }
  
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .intro-large-text {
    font-size: 2.25rem;
  }
  
  .service-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 36px 0;
  }

  .service-item:hover {
    padding-left: 12px;
    padding-right: 0;
  }
  
  .service-item-title {
    font-size: 1.5rem;
  }
  
  .service-item-desc {
    padding-right: 0;
  }

  .service-item-arrow {
    display: none;
  }
  
  .interactive-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .metric-number {
    font-size: 3.5rem;
  }
  
  .case-study-row {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-bottom: 60px;
  }
  
  .case-study-visual {
    height: 280px;
  }

  .case-study-title {
    font-size: 1.85rem;
  }
  
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .why-us-grid {
    grid-template-columns: 1fr;
  }

  .why-us-card {
    padding: 36px 24px;
  }
  
  .timeline::before {
    left: 15px;
  }
  
  .timeline-item {
    padding-left: 50px;
  }
  
  .timeline-dot {
    left: 12px;
  }
  
  .faq-question {
    font-size: 1.2rem;
  }

  .final-cta h2 {
    font-size: 2.5rem;
  }

  .homepage-contact-fields {
    grid-template-columns: 1fr;
  }

  .homepage-contact-message {
    grid-column: auto;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .contact-form-container {
    padding: 30px;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 20px;
    text-align: center;
    padding-top: 30px;
  }
}

@media (max-width: 480px) {
  .team-grid {
    grid-template-columns: 1fr;
  }
}