/* Case Study Template - Visual System */
/* 
  Background: Right→left gradient from #6570FC (blue) into #000000 (black)
  Surface: Dark translucent "glass" cards rgba(10,12,20,0.65) with subtle borders
  Typography: H1 40/44, H2 28/34, H3 22/28, body 16/24
  Colors: #ffffff (primary), rgba(255,255,255,0.72) (secondary), rgba(255,255,255,0.48) (muted)
  Accent: #6570FC for links, active indicators, small dividers
*/

/* CSS Variables */
:root {
  --color-primary: #ffffff;
  --color-secondary: rgba(255, 255, 255, 0.72);
  --color-muted: rgba(255, 255, 255, 0.48);
  --color-accent: #6570FC;
  --color-background: linear-gradient(to left, #6570FC 0%, #000000 55%);
  --color-card-bg: rgba(10, 12, 20, 0.65);
  --color-card-border: rgba(255, 255, 255, 0.06);
  
  --font-size-h1: clamp(28px, 4vw, 36px);
  --font-size-h2: clamp(20px, 3vw, 28px);
  --font-size-h3: clamp(18px, 2.2vw, 22px);
  --font-size-body: 14px;
  --line-height-body: 20px;
  
  --border-radius-section: 20px;
  --border-radius-tile: 16px;
  --border-radius-pill: 999px;
  
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 72px;
  
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-elevated: 0 16px 48px rgba(0, 0, 0, 0.4);
  
  --toc-width: 240px;
  --content-max-width: 1200px;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-margin-top: 24px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-background);
  color: var(--color-primary);
  line-height: var(--line-height-body);
  font-size: var(--font-size-body);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }

p {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.5;
  font-size: var(--font-size-body);
}

/* Focus States */
*:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

/* Layout */
.main-content {
  margin-left: var(--toc-width);
  max-width: var(--content-max-width);
  margin-right: auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  padding-top: var(--spacing-xl);
}

/* Top Navigation Bar */
.top-navbar {
  position: relative;
  height: 80px;
  background: var(--color-card-bg);
  border-bottom: 1px solid var(--color-card-border);
  backdrop-filter: blur(10px);
  z-index: 200;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
}

.navbar-content {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-left: var(--toc-width);
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-tile);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-card-border);
}

.navbar-link:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.navbar-arrow {
  font-size: 18px;
  font-weight: 600;
}

.navbar-text {
  font-size: 14px;
}

.navbar-title {
  color: var(--color-secondary);
  font-size: 16px;
  font-weight: 500;
}

/* Table of Contents */
.toc {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--toc-width);
  height: 100vh;
  background: var(--color-card-bg);
  border-right: 1px solid var(--color-card-border);
  backdrop-filter: blur(10px);
  z-index: 100;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-card-border);
}

.toc-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.toc-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: var(--spacing-xs);
}

.toc-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  margin: 4px 0;
  transition: 0.3s;
}

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

.toc-link {
  display: block;
  padding: var(--spacing-sm) 0;
  color: var(--color-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
  padding-left: var(--spacing-md);
}

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

.toc-link.active {
  color: var(--color-primary);
  font-weight: 600;
}

.toc-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 2px;
}

/* Section Base */
.section {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-section);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

/* Image Sections within Content */
.image-section {
  margin: var(--spacing-xl) 0;
}

.image-section h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-h3);
}

.image-section p {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-body);
  line-height: 1.5;
}

.section-image {
  width: 100%;
  height: auto;
  max-height: 60vh;
  object-fit: contain;
  display: block;
  border-radius: var(--border-radius-tile);
  box-shadow: var(--shadow-elevated);
  border: 1px solid var(--color-card-border);
  background: rgba(255, 255, 255, 0.02);
}

/* Content Blocks */
.content-block {
  margin-bottom: var(--spacing-xl);
}

.content-block:last-child {
  margin-bottom: 0;
}

.content-block h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-h2);
}

.content-block h3 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-h3);
}

.content-block p {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.content-block ul, .content-block ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

.content-block li {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.5;
}

.bullet-list {
  list-style: none;
  padding-left: 0;
}

.bullet-list li {
  position: relative;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.bullet-list li::before {
  content: '•';
  color: var(--color-accent);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.numbered-list {
  counter-reset: item;
  list-style: none;
  padding-left: 0;
}

.numbered-list li {
  position: relative;
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  counter-increment: item;
}

.numbered-list li::before {
  content: counter(item) '.';
  color: var(--color-accent);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* Code blocks */
pre {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  margin: var(--spacing-md) 0;
  overflow-x: auto;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 14px;
  line-height: 1.5;
}

pre code {
  color: var(--color-primary);
  background: none;
  padding: 0;
  border: none;
  border-radius: 0;
}

code {
  background: rgba(101, 112, 252, 0.1);
  color: var(--color-accent);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 14px;
}

.analysis-log {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  margin: var(--spacing-md) 0;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 12px;
  line-height: 1.4;
  color: var(--color-muted);
  max-height: 300px;
  overflow-y: auto;
}

.section-title {
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 280ms cubic-bezier(0.2, 0.8, 0.2, 1),
              transform 280ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

/* Hero Section */
.section--hero {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: var(--spacing-xl);
}

.hero-text {
  text-align: center;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.dashboard-mockup {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-md);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-card);
}

.mockup-header {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-card-border);
  margin-bottom: var(--spacing-md);
}

.mockup-dots {
  display: flex;
  gap: var(--spacing-xs);
}

.mockup-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-muted);
}

.mockup-dots span:first-child {
  background: #ff5f57;
}

.mockup-dots span:nth-child(2) {
  background: #ffbd2e;
}

.mockup-dots span:nth-child(3) {
  background: #28ca42;
}

.mockup-content {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--spacing-md);
  height: 200px;
}

.mockup-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sidebar-item {
  height: 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.sidebar-item.active {
  background: var(--color-accent);
}

.mockup-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mockup-chart {
  height: 60px;
  background: linear-gradient(135deg, rgba(101, 112, 252, 0.2), rgba(101, 112, 252, 0.1));
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}

.mockup-chart::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 20%;
  right: 20%;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

.mockup-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mockup-card {
  height: 30px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.hero-title {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-description {
  font-size: 16px;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-mockup {
  width: 100%;
  display: flex;
  justify-content: center;
  margin: 0;
}

.device-frame {
  display: inline-block;
  background: #1a1a1a;
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow-elevated);
  max-width: 900px;
  width: 100%;
}

.device-screen {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  min-height: 500px;
  object-fit: contain;
}

.hero-meta {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.meta-pill {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-pill);
  font-size: 14px;
  font-weight: 500;
}

/* KPI Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  align-items: center;
}

.kpi-item {
  text-align: center;
}

.kpi-number {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.kpi-label {
  font-size: 14px;
  color: var(--color-secondary);
  font-weight: 500;
}

.kpi-divider {
  width: 1px;
  height: 40px;
  background: var(--color-card-border);
  justify-self: center;
}

/* Overview Grid */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.overview-card {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-tile);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  transition: all 0.2s ease;
  text-align: center;
}


.overview-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
}

.overview-card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.overview-card p {
  color: var(--color-secondary);
  font-size: 13px;
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
}

.overview-tags {
  display: flex;
  gap: var(--spacing-xs);
  justify-content: center;
  flex-wrap: wrap;
}

/* Problem & Solution Grid */
.problem-solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.problem-card, .solution-card {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-tile);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  transition: all 0.2s ease;
}


.problem-icon, .solution-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.problem-card h3, .solution-card h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  text-align: center;
}

.challenge-list, .solution-list {
  display: grid;
  gap: var(--spacing-md);
}

.challenge-item, .solution-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.challenge-dot, .solution-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.challenge-dot {
  background: #ff5f57;
}

.solution-dot {
  background: #28ca42;
}

.challenge-content h4, .solution-content h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 16px;
}

.challenge-content p, .solution-content p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 14px;
  line-height: 1.4;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.metric-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  transition: all 0.2s ease;
}


.metric-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
}

.metric-number {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.metric-label {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.metric-description {
  color: var(--color-secondary);
  font-size: 14px;
  margin: 0;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-tile {
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-tile);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  transition: all 0.2s ease;
}


.feature-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
}

.feature-image {
  margin-bottom: var(--spacing-md);
  border-radius: var(--border-radius-tile);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-card-border);
}

.feature-image img {
  width: 100%;
  height: auto;
  max-height: 200px;
  object-fit: contain;
  display: block;
  background: rgba(255, 255, 255, 0.02);
}

.feature-tile h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.feature-tile p {
  color: var(--color-secondary);
  font-size: 13px;
  margin: 0;
  line-height: 1.4;
}

/* Split Container */
.split-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.split-title {
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
  font-size: 20px;
}

.callout-pill {
  background: rgba(101, 112, 252, 0.1);
  border: 1px solid var(--color-accent);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  text-align: center;
}

.callout-pill p {
  font-style: italic;
  color: var(--color-primary);
  margin: 0;
  font-size: 18px;
}

/* Persona Cards */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.persona-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  text-align: center;
}

.persona-avatar {
  width: 100%;
  height: 200px;
  border-radius: var(--border-radius-tile);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
}

.persona-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-tile);
}

.persona-name {
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.persona-role {
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.persona-details {
  text-align: left;
  margin-bottom: var(--spacing-lg);
}

.persona-section {
  margin-bottom: var(--spacing-md);
}

.persona-section h4 {
  color: var(--color-primary);
  font-size: 16px;
  margin-bottom: var(--spacing-sm);
}

.persona-section ul {
  list-style: none;
  padding-left: 0;
}

.persona-section li {
  color: var(--color-secondary);
  font-size: 14px;
  margin-bottom: var(--spacing-xs);
  padding-left: var(--spacing-md);
  position: relative;
}

.persona-section li::before {
  content: '•';
  color: var(--color-accent);
  position: absolute;
  left: 0;
}

.persona-tags {
  display: flex;
  gap: var(--spacing-xs);
  justify-content: center;
  flex-wrap: wrap;
}

.tag {
  background: rgba(101, 112, 252, 0.2);
  color: var(--color-accent);
  padding: 4px 12px;
  border-radius: var(--border-radius-pill);
  font-size: 12px;
  font-weight: 500;
}

/* User Flow */
.flow-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  margin: var(--spacing-xl) 0;
}

.flow-container::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-card-border);
  z-index: 1;
}

.flow-step {
  position: relative;
  z-index: 2;
  text-align: center;
  flex: 1;
}

.step-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  max-width: 200px;
  margin-left: auto;
  margin-right: auto;
}

.step-card h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 16px;
}

.step-card p {
  color: var(--color-secondary);
  font-size: 14px;
  margin: 0;
}

.step-node {
  width: 16px;
  height: 16px;
  background: var(--color-muted);
  border-radius: 50%;
  margin: 0 auto var(--spacing-sm);
  border: 3px solid var(--color-card-bg);
}

.step-node.active {
  background: var(--color-accent);
}

.step-label {
  font-size: 12px;
  color: var(--color-muted);
  font-weight: 500;
}

/* Chart */
.chart-container {
  text-align: center;
}

.chart-header {
  margin-bottom: var(--spacing-lg);
}

.chart-header h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.chart-header p {
  color: var(--color-secondary);
  margin: 0;
}

.chart-wrapper {
  background: rgba(0, 0, 0, 0.3);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.metrics-chart {
  width: 100%;
  max-width: 400px;
  height: auto;
}

.chart-caption {
  color: var(--color-muted);
  font-size: 14px;
  margin: 0;
}

/* Architecture */
.architecture-container {
  display: grid;
  gap: var(--spacing-xl);
}

.tech-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.stack-section h3 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-md);
}

.tech-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  transition: all 0.2s ease;
}

.tech-item:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

.tech-icon {
  font-size: 24px;
  transition: transform 0.2s ease;
}

.tech-item span {
  font-size: 12px;
  color: var(--color-secondary);
  text-align: center;
}

.architecture-diagram {
  display: grid;
  gap: var(--spacing-md);
}

.diagram-layer {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  transition: all 0.2s ease;
}

.diagram-layer:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.diagram-layer h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.diagram-components {
  display: flex;
  justify-content: space-around;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.diagram-components span {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 12px;
  color: var(--color-secondary);
  transition: all 0.2s ease;
}

/* Challenges */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.challenge-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  transition: all 0.2s ease;
}


.challenge-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.challenge-icon {
  font-size: 32px;
  transition: transform 0.2s ease;
}

.challenge-header h3 {
  color: var(--color-primary);
  margin: 0;
}

.challenge-content {
  display: grid;
  gap: var(--spacing-md);
}

.challenge-problem, .challenge-solution {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-tile);
}

.challenge-problem {
  background: rgba(255, 87, 87, 0.1);
  border: 1px solid rgba(255, 87, 87, 0.2);
}

.challenge-solution {
  background: rgba(40, 202, 66, 0.1);
  border: 1px solid rgba(40, 202, 66, 0.2);
}

.challenge-problem h4, .challenge-solution h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 16px;
}

.challenge-problem p, .challenge-solution p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 14px;
}

/* Process */
.process-container {
  max-width: 800px;
  margin: 0 auto;
}

.process-timeline {
  position: relative;
  padding-left: var(--spacing-xl);
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-card-border);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
}

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-card-bg);
}

.timeline-content {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
}

.timeline-content h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.timeline-content p {
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
}

.timeline-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

/* Impact */
.impact-container {
  display: grid;
  gap: var(--spacing-xl);
}

.impact-section h3 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.impact-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  transition: all 0.2s ease;
}


.impact-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
}

.impact-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.impact-item p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 14px;
}

/* Roadmap */
.roadmap-container {
  display: grid;
  gap: var(--spacing-xl);
}

.roadmap-section h3 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.roadmap-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  transition: all 0.2s ease;
}


.roadmap-icon {
  font-size: 32px;
  margin-bottom: var(--spacing-md);
}

.roadmap-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.roadmap-item p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 14px;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  border-radius: var(--border-radius-tile);
  overflow: hidden;
  border: 1px solid var(--color-card-border);
  position: relative;
}

.gallery-placeholder {
  background: linear-gradient(135deg, rgba(101, 112, 252, 0.1), rgba(101, 112, 252, 0.05));
  padding: var(--spacing-xl);
  text-align: center;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.placeholder-content h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.placeholder-content p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 14px;
}

.thumb-placeholder {
  background: linear-gradient(135deg, rgba(101, 112, 252, 0.1), rgba(101, 112, 252, 0.05));
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  text-align: center;
  width: 80px;
  height: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.thumb-placeholder h4 {
  color: var(--color-primary);
  margin: 0 0 var(--spacing-xs) 0;
  font-size: 12px;
}

.thumb-placeholder p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 10px;
  line-height: 1.2;
}


.gallery-thumb {
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: contain;
  display: block;
  background: rgba(255, 255, 255, 0.02);
}

.gallery-content h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 16px;
}

.gallery-content p {
  color: var(--color-secondary);
  margin: 0;
  font-size: 14px;
}

/* Whiteboard */
.whiteboard {
  background: #F5F7FB;
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.whiteboard-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.sketch-note {
  background: white;
  border: 1px solid #e1e5e9;
  border-radius: 8px;
  padding: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.sketch-note h4 {
  color: #333;
  margin-bottom: var(--spacing-xs);
  font-size: 16px;
}

.sketch-note p {
  color: #666;
  margin: 0;
  font-size: 14px;
}

/* Footer */
.section--footer {
  text-align: center;
  background: rgba(101, 112, 252, 0.1);
  border-color: var(--color-accent);
}

.footer-content h2 {
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

.cta-button {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius-pill);
  text-decoration: none;
  font-weight: 600;
  margin-bottom: var(--spacing-xl);
  transition: all 0.2s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(101, 112, 252, 0.3);
}

.project-thumbnails {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.project-thumb {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--color-secondary);
  transition: color 0.2s ease;
}

.project-thumb:hover {
  color: var(--color-primary);
}

.project-thumb img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--border-radius-tile);
  margin-bottom: var(--spacing-xs);
  border: 1px solid var(--color-card-border);
}

.project-thumb span {
  font-size: 14px;
  font-weight: 500;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  margin: 5vh auto;
  text-align: center;
}

.modal-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: white;
  font-size: 32px;
  cursor: pointer;
  padding: 0;
  width: 40px;
  height: 40px;
}

.modal-image {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--border-radius-tile);
}

.modal-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
}

.modal-prev,
.modal-next {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: var(--spacing-md);
  border-radius: 50%;
  transition: background 0.2s ease;
}

.modal-prev:hover,
.modal-next:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .top-navbar {
    height: 70px;
    padding: 0 var(--spacing-md);
  }
  
  .navbar-content {
    padding-left: 0;
    justify-content: space-between;
  }
  
  .navbar-link {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .navbar-text {
    display: none; /* Hide text on mobile, keep arrow */
  }
  
  .navbar-title {
    font-size: 14px;
  }
  
  .main-content {
    margin-left: 0;
    padding: var(--spacing-lg) var(--spacing-md);
    padding-top: calc(var(--spacing-lg) + 70px); /* Adjust for mobile navbar height */
  }
  
  .toc {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    top: 70px; /* Position below top navbar */
    height: calc(100vh - 70px);
  }
  
  .toc.open {
    transform: translateX(0);
  }
  
  .toc-toggle {
    display: block;
  }
  
  .section {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
  }
  
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .kpi-divider {
    display: none;
  }
  
  .split-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .flow-container {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .flow-container::before {
    display: none;
  }
  
  .flow-step {
    width: 100%;
  }
  
  .step-card {
    max-width: none;
  }
  
  .persona-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
  
  .overview-grid {
    grid-template-columns: 1fr;
  }
  
  .problem-solution-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .section-image {
    max-height: 40vh;
  }
  
  .device-frame {
    max-width: 100%;
    padding: 15px;
  }
  
  .device-screen {
    min-height: 350px;
  }
  
  .hero-content {
    gap: var(--spacing-lg);
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .whiteboard-content {
    grid-template-columns: 1fr;
  }
  
  .podcasts-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .podcast-card {
    flex-direction: column;
    text-align: center;
  }
  
  .podcast-image {
    margin-bottom: var(--spacing-md);
  }
  
  .podcast-thumb {
    max-height: 200px;
  }
}

/* Podcast Styles */
.podcasts-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.podcasts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.podcast-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.podcast-image {
  width: 100%;
  border-radius: var(--border-radius-section);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.podcast-thumb {
  width: 100%;
  height: auto;
  object-fit: contain;
  max-height: 250px;
  display: block;
}

.podcast-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.podcast-title {
  font-size: var(--font-size-h3);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.3;
  margin: 0;
}

.podcast-description {
  font-size: var(--font-size-body);
  line-height: 1.5;
  color: var(--color-secondary);
  margin: 0;
  flex: 1;
}

.podcast-meta {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  margin-top: var(--spacing-sm);
}

.podcast-duration,
.podcast-date {
  font-size: 13px;
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Additional case study styles */
.analysis-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-tile);
  box-shadow: var(--shadow-card);
}

.pattern-image, .formula-image, .halving-image, .solution-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-tile);
  box-shadow: var(--shadow-card);
}

.hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-tile);
}

.workflow-container {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--border-radius-tile);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.workflow-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.workflow-step {
  text-align: center;
  flex: 1;
  min-width: 200px;
}

.step-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.workflow-flow {
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: bold;
}

@media (max-width: 768px) {
  .workflow-steps {
    flex-direction: column;
  }
  
  .workflow-flow {
    transform: rotate(90deg);
  }
}