/* 
Modenauatelier - Main Stylesheet
Theme: Modern Flat Professional Dark
Version: 1.0
Author: Modenauatelier
Last updated: 15.01.2026
*/

/* ===============================================
   Table of Contents:
   1. CSS Reset & Base Styles
   2. Typography
   3. Variables & Custom Properties
   4. Layout & Containers
   5. Header & Navigation
   6. Hero Section
   7. Page Content Sections
   8. Cards & Grid Layouts
   9. Buttons & Form Elements
   10. Research & Case Studies
   11. Methodology Section
   12. Urban Analytics
   13. Latest Posts
   14. Newsletter Section
   15. Contact Form
   16. Callout Section
   17. Footer
   18. Cookie Consent & Modal
   19. Accessibility
   20. Best Practices Page
   21. Interviews Page
   22. Contact Page
   23. Thank You Page
   24. Legal Pages
   25. Media Queries
   26. Animations & Transitions
   27. Print Styles
   28. Utility Classes
================================================ */

/* ===============================================
   1. CSS Reset & Base Styles
================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 62.5%; 
  scroll-behavior: smooth;
}

body {
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.6rem;
  line-height: 1.6;
  color: #E0E0E0;
  background-color: #121212;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: #00E5FF;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover,
a:focus {
  color: #3DFFDC;
  text-decoration: underline;
}

ul, ol {
  list-style-position: inside;
}

/* ===============================================
   2. Typography
================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Source Sans 3', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 2rem;
  color: #fff;
}

h1 {
  font-size: 4.2rem;
  letter-spacing: -0.02em;
  margin-bottom: 2.4rem;
}

h2 {
  font-size: 3.6rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 2.8rem;
  font-weight: 600;
}

h4 {
  font-size: 2.2rem;
  font-weight: 600;
}

h5 {
  font-size: 1.8rem;
  font-weight: 600;
}

h6 {
  font-size: 1.6rem;
  font-weight: 700;
}

p {
  margin-bottom: 2rem;
}

.section-title {
  text-align: center;
  margin-bottom: 4rem;
  position: relative;
  font-size: 3.2rem;
  padding-bottom: 1.5rem;
}

.section-title:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 8rem;
  height: 3px;
  background: linear-gradient(90deg, #00E5FF, #3DFFDC);
}

.section-title-small {
  font-size: 2.2rem;
  margin-bottom: 2rem;
}

.section-subtitle {
  text-align: center;
  font-size: 1.8rem;
  color: #A0A0A0;
  margin: -3rem auto 4rem;
  max-width: 80%;
}

blockquote {
  border-left: 4px solid #00E5FF;
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  background-color: rgba(0, 229, 255, 0.05);
  font-style: italic;
}

/* ===============================================
   3. Variables & Custom Properties
================================================ */
:root {
  
  --color-bg-dark: #121212;
  --color-bg-surface: #1E1E1E;
  --color-bg-card: #242424;
  --color-bg-card-hover: #2A2A2A;
  --color-text: #E0E0E0;
  --color-text-muted: #A0A0A0;
  --color-primary: #00E5FF;
  --color-secondary: #3DFFDC;
  --color-accent: #FF4081;
  --color-highlight: #2A2A2A;
  --color-border: #333333;
  
  
  --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-large: 0 8px 16px rgba(0, 0, 0, 0.5);
  
  
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-round: 50%;
  
  
  --container-width: 1200px;
  --container-padding: 2rem;
}

/* ===============================================
   4. Layout & Containers
================================================ */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

main {
  flex: 1;
}

section {
  padding: 8rem 0;
}

section:nth-child(even) {
  background-color: var(--color-bg-surface);
}

/* ===============================================
   5. Header & Navigation
================================================ */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-bg-dark);
  padding: 8px;
  z-index: 100;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
  outline: none;
}

.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(18, 18, 18, 0.95);
  box-shadow: var(--shadow-medium);
  z-index: 1000;
  padding: 2rem 0;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

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

.logo {
  display: block;
  max-width: 20rem;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.main-navigation {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 3rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--color-text);
  font-weight: 600;
  font-size: 1.6rem;
  text-decoration: none;
  padding: 1rem 0;
  position: relative;
  display: block;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-primary);
  text-decoration: none;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
}

.sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 25rem;
  background-color: var(--color-bg-surface);
  box-shadow: var(--shadow-medium);
  border-radius: var(--radius-sm);
  z-index: 100;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
}

.nav-item:hover .sub-menu,
.nav-item:focus-within .sub-menu {
  display: block;
}

.sub-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sub-menu a {
  display: block;
  padding: 1rem;
  color: var(--color-text);
  font-size: 1.4rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.sub-menu a:hover,
.sub-menu a:focus {
  background-color: var(--color-highlight);
  color: var(--color-primary);
  text-decoration: none;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 1rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 2.5rem;
  height: 2px;
  background-color: var(--color-text);
  margin: 6px 0;
  transition: all 0.3s ease;
}

.header-cta {
  margin-left: 3rem;
}

/* ===============================================
   6. Hero Section
================================================ */
.hero {
  position: relative;
  height: 80vh;
  min-height: 60rem;
  display: flex;
  align-items: center;
  color: white;
  background-color: var(--color-bg-dark);
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 70rem;
}

.hero h1 {
  font-size: 4.8rem;
  line-height: 1.2;
  margin-bottom: 2rem;
  font-weight: 700;
  animation: fadeInUp 0.8s ease-out both;
}

.hero-subtitle {
  font-size: 2rem;
  margin-bottom: 3rem;
  color: rgba(255, 255, 255, 0.9);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
  display: flex;
  gap: 2rem;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-top: 3rem;
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.8);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.meta-item i {
  color: var(--color-primary);
}

/* ===============================================
   7. Page Content Sections
================================================ */
.page-navigation {
  padding: 3rem 0;
  background-color: var(--color-bg-surface);
}

.page-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  list-style: none;
  justify-content: center;
  margin: 0;
  padding: 0;
}

.page-nav-list a {
  display: inline-block;
  padding: 1rem 2rem;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
  color: var(--color-text);
}

.page-nav-list a:hover,
.page-nav-list a:focus {
  background-color: var(--color-highlight);
  color: var(--color-primary);
  text-decoration: none;
}

.page-header {
  padding: 6rem 0;
  background-color: var(--color-bg-surface);
  text-align: center;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
  font-size: 1.4rem;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb > *:not(:last-child)::after {
  content: ' > ';
  margin: 0 0.5rem;
  color: var(--color-text-muted);
}

.page-subtitle {
  font-size: 1.8rem;
  color: var(--color-text-muted);
  max-width: 80%;
  margin: 0 auto;
}

.intro-section {
  padding: 6rem 0;
}

.intro-content {
  max-width: 80rem;
  margin: 0 auto;
  text-align: center;
}

/* ===============================================
   8. Cards & Grid Layouts
================================================ */
.research-grid,
.methodology-grid,
.tools-grid,
.checklists-grid,
.reading-grid,
.callouts-grid,
.posts-list,
.interviews-grid,
.projects-grid,
.collab-grid {
  display: grid;
  gap: 3rem;
  margin: 4rem 0;
}

.research-grid {
  grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
}

.methodology-grid,
.tools-grid {
  grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
}

.checklists-grid {
  grid-template-columns: repeat(auto-fit, minmax(28rem, 1fr));
}

.reading-grid {
  grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
}

.callouts-grid {
  grid-template-columns: repeat(auto-fit, minmax(40rem, 1fr));
}

.research-card,
.methodology-card,
.tool-item,
.checklist-card,
.reading-card,
.callout-card,
.post-item,
.interview-card {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.research-card:hover,
.methodology-card:hover,
.tool-item:hover,
.reading-card:hover,
.callout-card:hover,
.post-item:hover,
.interview-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.research-image,
.interview-image {
  overflow: hidden;
  position: relative;
  aspect-ratio: 16 / 9;
}

.research-image img,
.interview-image img,
.project-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.research-card:hover .research-image img,
.interview-card:hover .interview-image img,
.project-item:hover img {
  transform: scale(1.05);
}

.research-content,
.interview-preview {
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.research-meta {
  margin-top: auto;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 1.4rem;
  color: var(--color-text-muted);
}

.research-firm {
  display: block;
  margin-bottom: 1rem;
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.tag {
  display: inline-block;
  padding: 0.4rem 1rem;
  background-color: rgba(0, 229, 255, 0.1);
  color: var(--color-primary);
  border-radius: 2rem;
  font-size: 1.2rem;
}

.methodology-card {
  padding: 3rem 2rem;
  text-align: center;
}

.methodology-icon {
  font-size: 3.6rem;
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.methodology-details {
  margin-top: 2rem;
  text-align: left;
}

.methodology-details h4 {
  margin-bottom: 1rem;
}

.methodology-details ul {
  list-style: disc;
  padding-left: 2rem;
}

.tool-item {
  padding: 2rem;
  text-align: center;
}

.tool-icon {
  font-size: 3rem;
  color: var(--color-secondary);
  margin-bottom: 1.5rem;
}

.checklist-card {
  padding: 2.5rem;
}

.checklist {
  list-style: none;
  margin-top: 1.5rem;
}

.checklist li {
  position: relative;
  padding-left: 3rem;
  margin-bottom: 1.5rem;
}

.checklist li:before {
  content: '\f058';
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.reading-card {
  padding: 3rem;
  position: relative;
}

.reading-card h3 {
  margin-bottom: 1.5rem;
  font-size: 2rem;
}

.read-more {
  display: inline-block;
  margin-top: 2rem;
  color: var(--color-primary);
  font-weight: 600;
}

.reading-card:hover .read-more {
  color: var(--color-secondary);
}

.callout-card {
  padding: 4rem;
  background-size: cover;
  background-position: center;
  position: relative;
}

.callout-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom right, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.9));
  z-index: 1;
}

.callout-content {
  position: relative;
  z-index: 2;
}

.post-item {
  padding: 2.5rem;
}

.post-meta {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 1.4rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.post-category {
  display: inline-block;
  padding: 0.3rem 1rem;
  background-color: rgba(61, 255, 220, 0.1);
  color: var(--color-secondary);
  border-radius: 2rem;
}

.post-title {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
}

.post-link {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 2rem;
  font-weight: 600;
}

.post-link i {
  transition: transform 0.2s ease;
}

.post-link:hover i {
  transform: translateX(5px);
}

.interview-meta {
  margin-bottom: 1.5rem;
}

.interview-position {
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.interview-quote {
  font-style: italic;
  position: relative;
  padding: 0 2rem;
  margin: 0 0 2rem 0;
  color: var(--color-text);
  font-size: 1.5rem;
  line-height: 1.6;
}

.interview-quote::before {
  content: '\201C';
  position: absolute;
  left: 0;
  top: 0;
  font-size: 3rem;
  color: var(--color-primary);
  font-family: serif;
}

.projects-grid {
  grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
  gap: 2rem;
}

.project-item {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.project-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0));
  transition: opacity 0.3s ease;
}

.project-info h4 {
  margin-bottom: 0.5rem;
  font-size: 1.8rem;
}

.project-info p {
  margin: 0;
  font-size: 1.4rem;
  color: var(--color-text-muted);
}

/* ===============================================
   9. Buttons & Form Elements
================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem 2.4rem;
  border-radius: 0.4rem;
  font-weight: 600;
  font-size: 1.6rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  outline: none;
}

.btn:focus {
  outline: 3px solid rgba(0, 229, 255, 0.5);
  outline-offset: 2px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #121212;
}

.btn-primary:hover {
  background-color: #33EEFF;
  color: #121212;
  text-decoration: none;
}

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

.btn-secondary:hover {
  background-color: rgba(0, 229, 255, 0.1);
  color: var(--color-primary);
  text-decoration: none;
}

.btn-tertiary {
  background-color: transparent;
  color: var(--color-text);
  padding: 0.8rem 0;
  position: relative;
  border-radius: 0;
}

.btn-tertiary::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.3s ease;
}

.btn-tertiary:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.btn-tertiary:hover::after {
  width: 100%;
}

.form {
  max-width: 60rem;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 2.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.8rem;
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-surface);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.6rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.2);
  outline: none;
}

.form-check {
  display: flex;
  align-items: flex-start;
  margin-bottom: 2.5rem;
}

.form-check input[type="checkbox"] {
  margin-right: 1rem;
  margin-top: 0.4rem;
  min-width: 1.8rem;
  height: 1.8rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-surface);
  border-radius: 0.3rem;
  appearance: none;
  cursor: pointer;
  position: relative;
}

.form-check input[type="checkbox"]:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.form-check input[type="checkbox"]:checked::after {
  content: '\2713';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #121212;
  font-size: 1.2rem;
}

.form-check label {
  font-size: 1.4rem;
  color: var(--color-text-muted);
}

.newsletter-form {
  max-width: 60rem;
  margin: 0 auto;
}

.newsletter-form .form-group {
  display: flex;
  gap: 1rem;
}

.newsletter-form input {
  flex: 1;
}

.subscribe-form {
  max-width: 60rem;
  margin: 0 auto;
}

.subscribe-form .form-group {
  display: flex;
  gap: 1rem;
}

.subscribe-form input {
  flex: 1;
}

/* ===============================================
   10. Research & Case Studies
================================================ */
.featured-research {
  padding: 8rem 0;
}

.case-studies {
  background-color: var(--color-bg-surface);
  padding: 8rem 0;
}

.case-study-item {
  margin-bottom: 6rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg-card);
}

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

.case-study-header {
  padding: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.case-badge {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1.5rem;
  background-color: rgba(0, 229, 255, 0.1);
  color: var(--color-primary);
  border-radius: 2rem;
  font-size: 1.4rem;
}

.case-study-content {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  padding: 2.5rem;
}

.case-study-image {
  flex: 1;
  min-width: 30rem;
  max-width: 50rem;
}

.case-study-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.case-study-details {
  flex: 2;
  min-width: 30rem;
}

.case-study-details > div {
  margin-bottom: 3rem;
}

.case-study-details > div:last-child {
  margin-bottom: 0;
}

.case-problem h4,
.case-solution h4,
.case-results h4,
.case-takeaways h4 {
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.case-solution ul,
.case-takeaways ul {
  padding-left: 2rem;
  margin-bottom: 2rem;
}

.case-solution ul li,
.case-takeaways ul li {
  margin-bottom: 1rem;
}

/* ===============================================
   11. Methodology Section
================================================ */
.methodology {
  padding: 8rem 0;
}

.methodology-tools {
  margin-top: 6rem;
}

.methodology-tools h3 {
  text-align: center;
  margin-bottom: 3rem;
}

/* ===============================================
   12. Urban Analytics
================================================ */
.urban-analytics {
  background-color: var(--color-bg-surface);
  padding: 8rem 0;
}

.analytics-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  margin: 5rem 0;
}

.analytics-visual {
  flex: 1;
  min-width: 35rem;
  max-width: 60rem;
}

.analytics-visual img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.analytics-info {
  flex: 1;
  min-width: 30rem;
}

.analytics-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 3rem 0;
}

.metric-item {
  background-color: var(--color-bg-card);
  padding: 2rem;
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 18rem;
  text-align: center;
}

.metric-value {
  font-size: 3.6rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 1rem 0;
}

.metric-item h4 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.metric-item p {
  font-size: 1.4rem;
  color: var(--color-text-muted);
  margin: 0;
}

.analytics-insights {
  margin-top: 3rem;
}

.analytics-insights ul {
  padding-left: 2rem;
}

.analytics-insights li {
  margin-bottom: 1rem;
}

.analytics-projects {
  margin-top: 3rem;
}

.project-list {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-sm);
}

.project-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--color-border);
}

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

.project-name {
  font-weight: 600;
}

.project-status {
  font-size: 1.4rem;
  padding: 0.3rem 1rem;
  background-color: rgba(61, 255, 220, 0.1);
  color: var(--color-secondary);
  border-radius: 2rem;
}

.urban-case-example {
  margin-top: 6rem;
}

.case-example-content {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  margin-top: 3rem;
}

.case-example-image {
  flex: 1;
  min-width: 30rem;
  max-width: 45rem;
}

.case-example-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.case-example-info {
  flex: 2;
  min-width: 30rem;
}

.case-example-info ul {
  padding-left: 2rem;
  margin: 1.5rem 0;
}

.case-example-info li {
  margin-bottom: 1rem;
}

/* ===============================================
   13. Latest Posts
================================================ */
.latest-posts {
  padding: 8rem 0;
}

.post-excerpt {
  color: var(--color-text-muted);
}

/* ===============================================
   14. Newsletter Section
================================================ */
.newsletter {
  padding: 6rem 0;
  background-color: var(--color-bg-surface);
}

.newsletter-content {
  text-align: center;
  max-width: 70rem;
  margin: 0 auto;
}

.subscribe-section {
  padding: 6rem 0;
  background-color: var(--color-bg-surface);
}

/* ===============================================
   15. Contact Form
================================================ */
.contact-form {
  padding: 8rem 0;
}


.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1100;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-md);
  max-width: 50rem;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: zoomIn 0.3s ease;
}

.modal-header {
  padding: 2rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  margin: 0;
}

.close-modal {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 2rem;
  cursor: pointer;
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  padding: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: right;
}

/* ===============================================
   16. Callout Section
================================================ */
.callout-section {
  padding: 6rem 0;
  background-color: var(--color-bg-surface);
}

/* ===============================================
   17. Footer
================================================ */
.site-footer {
  background-color: #0A0A0A;
  padding: 6rem 0 3rem;
  margin-top: 6rem;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-info {
  flex: 2;
  min-width: 30rem;
}

.footer-logo {
  max-width: 18rem;
  margin-bottom: 2rem;
}

.footer-contact {
  flex: 1;
  min-width: 20rem;
}

.footer-contact h3,
.footer-links h3 {
  font-size: 1.8rem;
  margin-bottom: 2rem;
  position: relative;
  padding-bottom: 1rem;
}

.footer-contact h3::after,
.footer-links h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 5rem;
  height: 2px;
  background-color: var(--color-primary);
}

.footer-contact address {
  font-style: normal;
}

.footer-contact p {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-contact i {
  color: var(--color-primary);
  min-width: 2rem;
  text-align: center;
}

.footer-links {
  flex: 1;
  min-width: 20rem;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--color-text);
  transition: color 0.2s ease;
  display: inline-block;
  padding: 0.5rem 0;
}

.footer-links a:hover,
.footer-links a:focus,
.footer-links a.active {
  color: var(--color-primary);
  text-decoration: none;
}

.cookie-settings-btn {
  background: none;
  border: none;
  color: var(--color-text);
  padding: 0.5rem 0;
  cursor: pointer;
  font-family: 'Source Sans 3', sans-serif;
  font-size: 1.6rem;
  text-align: left;
  transition: color 0.2s ease;
}

.cookie-settings-btn:hover {
  color: var(--color-primary);
}

.footer-bottom {
  padding-top: 3rem;
  border-top: 1px solid #1E1E1E;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.4rem;
}

/* ===============================================
   18. Cookie Consent & Modal
================================================ */
.cookie-banner {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  right: 2rem;
  max-width: 40rem;
  background-color: var(--color-bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-large);
  z-index: 1000;
  padding: 2rem;
  transform: translateY(150%);
  transition: transform 0.5s ease;
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-content h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.cookie-content p {
  font-size: 1.4rem;
  margin-bottom: 2rem;
}

.cookie-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}


.cookie-category {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--color-border);
}

.cookie-category:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.cookie-category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.cookie-category-header h3 {
  margin: 0;
  font-size: 1.8rem;
}

.cookie-category p {
  font-size: 1.4rem;
  color: var(--color-text-muted);
  margin: 0;
}


.switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 26px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #444;
  transition: .4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--color-primary);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--color-primary);
}

input:checked + .slider:before {
  transform: translateX(24px);
}

input:disabled + .slider {
  opacity: 0.5;
  cursor: not-allowed;
}

.cookie-settings-cta {
  margin-top: 6rem;
  text-align: center;
  padding: 3rem;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
}

.cookie-settings-cta h2 {
  margin-bottom: 2rem;
}

.cookie-settings-cta p {
  margin-bottom: 2.5rem;
}

/* ===============================================
   19. Accessibility
================================================ */
:focus {
  outline: 3px solid rgba(0, 229, 255, 0.5);
  outline-offset: 2px;
}

.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal;
}

.screen-reader-text:focus {
  background-color: var(--color-bg-dark);
  clip: auto;
  clip-path: none;
  color: var(--color-primary);
  display: block;
  font-size: 1.6rem;
  height: auto;
  left: 5px;
  line-height: normal;
  padding: 15px 23px 14px;
  text-decoration: none;
  top: 5px;
  width: auto;
  z-index: 100000;
}

/* ===============================================
   20. Best Practices Page
================================================ */
.best-practice-section {
  padding: 8rem 0;
}

.best-practice-section.alternate {
  background-color: var(--color-bg-surface);
}

.best-practice-content {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
  margin-top: 4rem;
}

.best-practice-image {
  flex: 1;
  min-width: 30rem;
  max-width: 50rem;
}

.best-practice-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.best-practice-details {
  flex: 2;
  min-width: 30rem;
}

.practice-description,
.practice-metrics,
.practice-measurement,
.practice-example,
.practice-recommendations {
  margin-bottom: 4rem;
}

.practice-description h3,
.practice-metrics h3,
.practice-measurement h3,
.practice-example h3,
.practice-recommendations h3 {
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.metrics-list {
  list-style: none;
  padding: 0;
}

.metrics-list li {
  margin-bottom: 1.5rem;
  padding-left: 3rem;
  position: relative;
}

.metrics-list li::before {
  content: '\f0c8';
  font-family: 'Font Awesome 5 Free';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.practice-measurement ul {
  padding-left: 2rem;
  margin-bottom: 2rem;
}

.practice-measurement li {
  margin-bottom: 1rem;
}

.example-content {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-sm);
  padding: 2.5rem;
}

.example-content h4 {
  margin-bottom: 2rem;
}

.example-content ul {
  padding-left: 2rem;
  margin: 1.5rem 0;
}

.example-content li {
  margin-bottom: 1rem;
}

.practice-recommendations ol {
  padding-left: 2rem;
  counter-reset: item;
}

.practice-recommendations li {
  margin-bottom: 1.5rem;
  counter-increment: item;
  position: relative;
  padding-left: 3rem;
}

.practice-recommendations li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: 0;
  width: 2.2rem;
  height: 2.2rem;
  background-color: var(--color-primary);
  color: var(--color-bg-dark);
  border-radius: 50%;
  text-align: center;
  line-height: 2.2rem;
  font-size: 1.2rem;
  font-weight: 700;
}

.further-reading {
  padding: 8rem 0;
}

/* ===============================================
   21. Interviews Page
================================================ */
.interviews-list {
  padding: 6rem 0;
}

.interview-card {
  display: flex;
  flex-direction: row;
  background-color: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 4rem;
}

.interview-image {
  flex: 1;
  min-width: 25rem;
  max-width: 30rem;
}

.interview-preview {
  flex: 2;
  padding: 3rem;
}

.full-interview {
  padding: 6rem 0;
  border-top: 1px solid var(--color-border);
}

.interview-header {
  margin-bottom: 4rem;
}

.interview-header-content {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  align-items: center;
}

.interview-header .interview-meta {
  flex: 2;
  min-width: 30rem;
}

.interview-header .interview-image {
  flex: 1;
  min-width: 20rem;
  max-width: 30rem;
}

.interview-header .interview-image img {
  border-radius: var(--radius-md);
}

.interview-bio {
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid var(--color-border);
}

.question-answer {
  margin-bottom: 4rem;
}

.question {
  margin-bottom: 2rem;
}

.question p {
  font-weight: 700;
}

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

.interview-projects {
  margin: 5rem 0;
}

.interview-takeaways {
  background-color: var(--color-bg-card);
  padding: 3rem;
  border-radius: var(--radius-md);
}

.interview-takeaways ul {
  padding-left: 2rem;
  column-count: 2;
  column-gap: 3rem;
}

.interview-takeaways li {
  margin-bottom: 1.5rem;
  break-inside: avoid;
}

/* ===============================================
   22. Contact Page
================================================ */
.contact-info {
  padding: 6rem 0;
}

.contact-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 4rem;
}

.contact-details,
.location-info {
  flex: 1;
  min-width: 30rem;
}

.contact-item {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
}

.contact-item i {
  font-size: 2.4rem;
  color: var(--color-primary);
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 229, 255, 0.1);
  border-radius: 50%;
}

.contact-text h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.map-container {
  margin-bottom: 2.5rem;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.directions h3 {
  margin-bottom: 1.5rem;
}

.contact-form-section {
  padding: 6rem 0;
  background-color: var(--color-bg-surface);
  text-align: center;
}

.form-cta {
  margin-top: 3rem;
}

.research-collab {
  padding: 6rem 0;
}

.collab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
  gap: 3rem;
  margin: 4rem 0;
}

.collab-item {
  background-color: var(--color-bg-card);
  padding: 3rem;
  border-radius: var(--radius-md);
  text-align: center;
}

.collab-icon {
  font-size: 3.6rem;
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.collab-contact {
  text-align: center;
  margin-top: 4rem;
}

.faq-section {
  padding: 6rem 0;
  background-color: var(--color-bg-surface);
}

.faq-list {
  margin-top: 4rem;
}

.faq-item {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  padding: 2rem 0;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question h3 {
  margin: 0;
  font-size: 2rem;
}

.faq-toggle {
  font-size: 1.6rem;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-card);
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 2rem;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ===============================================
   23. Thank You Page
================================================ */
.thank-you-section {
  padding: 8rem 0;
  text-align: center;
}

.thank-you-content {
  max-width: 70rem;
  margin: 0 auto;
}

.thank-you-icon {
  font-size: 6rem;
  color: var(--color-primary);
  margin-bottom: 3rem;
}

.what-next {
  margin: 4rem 0;
  text-align: left;
  background-color: var(--color-bg-card);
  padding: 3rem;
  border-radius: var(--radius-md);
}

.what-next h2 {
  margin-bottom: 2rem;
}

.what-next ol {
  padding-left: 2rem;
}

.what-next li {
  margin-bottom: 1rem;
}

.next-steps {
  margin: 4rem 0;
}

.next-steps-links {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: center;
  margin-top: 2rem;
}

.return-home {
  margin-top: 4rem;
}

/* ===============================================
   24. Legal Pages
================================================ */
.legal-content {
  padding: 6rem 0;
}

.legal-header {
  text-align: center;
  margin-bottom: 5rem;
}

.legal-updated {
  color: var(--color-text-muted);
  font-size: 1.4rem;
  margin-top: -1rem;
}

.legal-navigation {
  margin-bottom: 5rem;
  background-color: var(--color-bg-surface);
  padding: 3rem;
  border-radius: var(--radius-md);
}

.legal-navigation h2 {
  margin-bottom: 2rem;
}

.legal-navigation ul {
  column-count: 2;
  column-gap: 3rem;
  list-style-position: inside;
}

.legal-navigation li {
  margin-bottom: 1rem;
  break-inside: avoid;
}

.legal-content section {
  margin-bottom: 5rem;
  padding: 0;
}

.legal-content h2 {
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.legal-content h3 {
  margin: 3rem 0 2rem;
}

.contact-info-block {
  background-color: var(--color-bg-card);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  margin: 2rem 0;
}

.cookie-table-container {
  margin: 2rem 0;
  overflow-x: auto;
}

.cookie-table {
  width: 100%;
  border-collapse: collapse;
}

.cookie-table th {
  background-color: var(--color-bg-dark);
  padding: 1.2rem;
  text-align: left;
  border: 1px solid var(--color-border);
}

.cookie-table td {
  padding: 1.2rem;
  border: 1px solid var(--color-border);
}

.cookie-table tr:nth-child(even) {
  background-color: rgba(42, 42, 42, 0.5);
}

.legal-contact {
  margin-top: 5rem;
}

.impressum-section {
  margin-bottom: 4rem;
}

/* ===============================================
   25. Media Queries
================================================ */
@media (max-width: 1200px) {
  html {
    font-size: 58%;
  }
  
  .interview-takeaways ul {
    column-count: 1;
  }
}

@media (max-width: 992px) {
  html {
    font-size: 56%;
  }
  
  .header-cta {
    display: none;
  }
  
  .hero {
    height: 70vh;
    min-height: 50rem;
  }
  
  .hero h1 {
    font-size: 4.2rem;
  }
  
  .analytics-content,
  .case-example-content {
    flex-direction: column;
  }
  
  .analytics-visual,
  .case-example-image {
    max-width: 100%;
  }
  
  .interview-card {
    flex-direction: column;
  }
  
  .interview-image {
    max-width: 100%;
    aspect-ratio: 16 / 9;
  }
  
  .legal-navigation ul {
    column-count: 1;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 54%;
  }
  
  section {
    padding: 6rem 0;
  }
  
  .hero {
    height: auto;
    padding: 8rem 0;
  }
  
  .hero h1 {
    font-size: 3.6rem;
  }
  
  .nav-list {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg-dark);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 999;
    padding: 5rem;
  }
  
  .nav-list.active {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .sub-menu {
    position: static;
    width: 100%;
    box-shadow: none;
    display: none;
    padding: 1rem 0 1rem 2rem;
  }
  
  .nav-item:hover .sub-menu {
    display: none;
  }
  
  .nav-item.active .sub-menu {
    display: block;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 4rem;
  }
  
  .newsletter-form .form-group,
  .subscribe-form .form-group {
    flex-direction: column;
  }
  
  .case-study-content {
    flex-direction: column;
  }
  
  .case-study-image {
    max-width: 100%;
  }
  
  .methodology-grid,
  .tools-grid,
  .reading-grid {
    grid-template-columns: 1fr;
  }
  
  .cookie-banner {
    left: 1rem;
    right: 1rem;
    max-width: calc(100% - 2rem);
  }
  
  .metric-item {
    min-width: 100%;
  }
  
  .best-practice-content,
  .contact-grid {
    flex-direction: column;
  }
  
  .best-practice-image {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 52%;
  }
  
  .hero h1 {
    font-size: 3.2rem;
  }
  
  .section-title {
    font-size: 2.8rem;
  }
  
  .analytics-metrics {
    flex-direction: column;
  }
  
  .modal-content {
    width: 95%;
  }
  
  .research-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-cta {
    flex-direction: column;
  }
}

/* ===============================================
   26. Animations & Transitions
================================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ===============================================
   27. Print Styles
================================================ */
@media print {
  body {
    background-color: white;
    color: black;
    font-size: 11pt;
  }
  
  .site-header,
  .site-footer,
  .cookie-banner,
  .modal,
  .hero-cta,
  .newsletter,
  .contact-form,
  .page-navigation {
    display: none;
  }
  
  a {
    text-decoration: underline;
    color: black;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: black;
    page-break-after: avoid;
  }
  
  p, h2, h3 {
    orphans: 3;
    widows: 3;
  }
  
  img {
    max-width: 100% !important;
  }
  
  @page {
    margin: 2cm;
  }
}

/* ===============================================
   28. Utility Classes
================================================ */
.iti {
  width: 100%;
}

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

.text-right {
  text-align: right;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-1 {
  margin-bottom: 1rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

.mb-3 {
  margin-bottom: 3rem;
}

.mb-4 {
  margin-bottom: 4rem;
}

.mb-5 {
  margin-bottom: 5rem;
}

.mt-0 {
  margin-top: 0;
}

.mt-1 {
  margin-top: 1rem;
}

.mt-2 {
  margin-top: 2rem;
}

.mt-3 {
  margin-top: 3rem;
}

.mt-4 {
  margin-top: 4rem;
}

.mt-5 {
  margin-top: 5rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.d-block {
  display: block;
}

.d-flex {
  display: flex;
}

.flex-wrap {
  flex-wrap: wrap;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.align-center {
  align-items: center;
}

.gap-1 {
  gap: 1rem;
}

.gap-2 {
  gap: 2rem;
}

.gap-3 {
  gap: 3rem;
}

.gap-4 {
  gap: 4rem;
}

.w-100 {
  width: 100%;
}