/* OctoNova Website Styles */

:root {
  --background: #ffffff;         /* Clean white background */
  --background-rgb: 255, 255, 255; /* RGB values for background */
  --surface: #f5f7fa;            /* Light gray surface elements */
  --primary: #0055B8;            /* OctoNova blue - authoritative but approachable */
  --secondary: #2D9CDB;          /* Secondary blue for contrast */
  --accent: #27AE60;             /* Success/activation green */
  --error: #EB5757;              /* Error/warning red */
  --text-primary: #333333;       /* Primary text - near black */
  --text-secondary: #4A4A4A;     /* Secondary text - dark gray (updated for better contrast) */
  --text-secondary-rgb: 74, 74, 74; /* RGB values for secondary text */
  --node-orchestrator: #0055B8;  /* Orchestrator nodes */
  --node-processor: #2D9CDB;     /* Processor nodes */
  --node-healthcare: #27AE60;    /* Healthcare vertical nodes */
  --node-realestate: #9B51E0;    /* Real estate vertical nodes */
  --node-education: #F2994A;     /* Education vertical nodes */
  --data-flow: rgba(45, 156, 219, 0.6); /* Data connections */
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Typography */
  --font-heading: 'IBM Plex Sans', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Focus styles */
  --focus-outline-color: #0055B8;
  --focus-outline-width: 3px;
  --focus-outline-offset: 2px;
}

/* Dark Mode Variables */
.dark-mode {
  --background: #121212;
  --background-rgb: 18, 18, 18;
  --surface: #1e1e1e;
  --text-primary: #f5f5f5;
  --text-secondary: #b0b0b0;
  --text-secondary-rgb: 176, 176, 176;
  --focus-outline-color: #4DB8FF; /* Brighter blue for better contrast in dark mode */
  --focus-outline-width: 3px;
  --focus-outline-offset: 3px; /* Increased offset for better visibility */
}

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

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

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--background);
  line-height: 1.5;
  overflow-x: hidden;
  transition: background-color var(--transition-medium), color var(--transition-medium);
  /* Ensure text resizing works properly */
  max-width: 100%;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

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

/* Accessibility - Skip to content link */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: white;
  padding: 8px 16px;
  z-index: 1000;
  transition: top 0.3s ease;
  text-decoration: none;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 500;
}

.skip-to-content:focus {
  top: 0;
  outline: none;
  box-shadow: 0 0 0 var(--focus-outline-width) rgba(var(--background-rgb), 0.5);
}

/* Improved focus styles for all interactive elements */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
}

/* High contrast focus style for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px rgba(var(--background-rgb), 0.3);
}

/* Enhanced dark mode focus styles */
.dark-mode a:focus-visible,
.dark-mode button:focus-visible,
.dark-mode input:focus-visible,
.dark-mode select:focus-visible,
.dark-mode textarea:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
  box-shadow: 0 0 0 2px var(--background), 0 0 0 5px rgba(77, 184, 255, 0.3);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.25rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
}

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

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

button {
  cursor: pointer;
  font-family: var(--font-body);
}

ul {
  list-style-position: inside;
}

/* Loading Screen */
.loading-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--background);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-container.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  max-width: 400px;
  padding: var(--spacing-lg);
}

.loading-logo {
  margin-bottom: var(--spacing-lg);
}

.loading-logo img {
  max-width: 200px;
  height: auto;
}

.loading-text {
  font-family: var(--font-mono);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.loading-progress-container {
  width: 100%;
  height: 4px;
  background-color: var(--surface);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.loading-progress-bar {
  height: 100%;
  width: 0;
  background-color: var(--primary);
  transition: width var(--transition-medium);
}

.loading-progress {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.on-button {
  background-color: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  padding: 0.75rem 2rem;
  font-weight: 600;
  font-size: 1.25rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 0 20px rgba(39, 174, 96, 0.5);
}

.on-button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(39, 174, 96, 0.7);
}

/* Page Container */
.page-container {
  display: none;
  flex-direction: column;
  min-height: 100vh;
  opacity: 1;
  visibility: visible;
}

.page-container.visible {
  display: flex;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  z-index: 100;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-medium);
}

.dark-mode .header {
  background-color: rgba(18, 18, 18, 0.9);
}

.logo img {
  height: 40px;
  width: auto;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.main-nav a {
  color: var(--text-primary);
  font-weight: 500;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-medium);
}

.main-nav a:hover::after {
  width: 100%;
}

.mode-toggle button {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}

.mode-toggle button:hover {
  background-color: var(--surface);
}

.mode-icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  background-image: url('../assets/moon-icon.svg');
  background-size: contain;
  background-repeat: no-repeat;
}

.dark-mode .mode-icon {
  background-image: url('../assets/sun-icon.svg');
}

/* 3D Visualization Container */
.visualization-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -1; /* Place behind content */
  overflow: hidden;
  background-color: transparent; /* Make background transparent */
  pointer-events: none; /* Allow clicks to pass through to content */
}

/* Make visualization elements clickable */
.visualization-container canvas {
  pointer-events: auto;
}

/* Content Sections */
.content {
  margin-top: 80px;
  flex: 1;
}

.section {
  padding: var(--spacing-xl) var(--spacing-lg);
  position: relative;
}

.section-content {
  max-width: 100%;
  overflow-wrap: break-word;
  word-wrap: break-word;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  padding: 0 var(--spacing-md);
}

/* Increase padding for larger screens */
@media (min-width: 1200px) {
  /* Increase section padding for better readability on large screens */
  .section {
    padding-left: calc(var(--spacing-xl) + var(--spacing-lg));
    padding-right: calc(var(--spacing-xl) + var(--spacing-lg));
  }
  
  /* Add extra padding to section content for better text positioning */
  .section-content {
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }
  
  /* Ensure the hero section's card moves right along with other content on larger screens */
  .hero-section {
    padding-left: calc(var(--spacing-xl) + var(--spacing-lg));
    padding-right: calc(var(--spacing-xl) + var(--spacing-lg));
    justify-content: flex-start; /* Align to the left within the padded container */
  }
  
  /* Reset the hero card's left margin since the parent section now has padding */
  .hero-section .section-content {
    padding: var(--spacing-lg); /* Match value-card padding for consistency */
    margin-left: 0; /* Reset margin since parent now has padding */
  }
}

/* Hero Section - Default styling for smaller screens */
.hero-section {
  display: flex;
  align-items: center;
  min-height: 60vh;
  padding: var(--spacing-xl) var(--spacing-lg);
  position: relative;
  z-index: 1;
}

/* Style the "Empowering Human-AI Collaboration" card - Default for smaller screens */
.hero-section .section-content {
  position: relative;
  z-index: 2;
  max-width: 100%;
  background: rgba(var(--background-rgb), 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin: 0 auto;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.dark-mode .hero-section .section-content {
  background: rgba(18, 18, 18, 0.7); /* Match value-card dark mode background */
}

/* Add hover effect to match value cards */
.hero-section .section-content:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.hero-section h1 {
  font-size: 2.25rem;
  margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto var(--spacing-sm);
}

.cta-container {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.cta-button {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.cta-button.primary {
  background-color: var(--primary);
  color: white;
  border: none;
}

.cta-button.primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.cta-button.secondary {
  background-color: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.cta-button.secondary:hover {
  background-color: rgba(0, 85, 184, 0.1);
}

/* About Section */
.about-section {
  background-color: var(--surface);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  background: rgba(var(--background-rgb), 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.dark-mode .values-grid {
  background: rgba(18, 18, 18, 0.85);
}

.value-card {
  background-color: rgba(var(--background-rgb), 0.7);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  min-height: auto;
  height: auto;
  overflow: visible;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.dark-mode .value-card {
  background-color: rgba(18, 18, 18, 0.7);
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* Verticals Section */
.verticals-tabs {
  margin-top: var(--spacing-lg);
}

.tab-content {
  background: rgba(var(--background-rgb), 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.dark-mode .tab-content {
  background: rgba(18, 18, 18, 0.85);
}

.tab-navigation {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.tab-button {
  padding: var(--spacing-sm) var(--spacing-md);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  transition: color var(--transition-fast);
}

.tab-button::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--primary);
  transition: width var(--transition-medium);
}

.tab-button:hover {
  color: var(--text-primary);
}

.tab-button.active {
  color: var(--primary);
}

.tab-button.active::after {
  width: 100%;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn var(--transition-medium);
}

.feature-list {
  margin-top: var(--spacing-md);
  list-style-type: none;
}

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

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--primary);
}

/* Technology Section */
.technology-section {
  background-color: var(--surface);
}

.tech-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  background: rgba(var(--background-rgb), 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.dark-mode .tech-features {
  background: rgba(18, 18, 18, 0.85);
}

.tech-feature {
  background-color: rgba(var(--background-rgb), 0.7);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.dark-mode .tech-feature {
  background-color: rgba(18, 18, 18, 0.7);
}

.tech-feature:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* Contact Section */
.contact-form {
  max-width: 600px;
  margin: var(--spacing-lg) auto 0;
  background: rgba(var(--background-rgb), 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.dark-mode .contact-form {
  background: rgba(18, 18, 18, 0.85);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

/* Required field indicator */
.required-indicator {
  color: var(--error);
  margin-left: 4px;
}

/* Field description */
.field-description {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--surface);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  background-color: var(--background);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 85, 184, 0.2);
}

/* Error styling */
.form-group.has-error input,
.form-group.has-error textarea {
  border-color: var(--error);
}

.email-note {
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
}

.error-message {
  color: var(--error);
  font-size: 0.85rem;
  margin-top: var(--spacing-xs);
  min-height: 1.25rem;
  font-weight: 500;
  display: none;
}

.form-group.has-error .error-message {
  display: block;
}

/* Character counter */
.character-counter {
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-align: right;
  margin-top: var(--spacing-xs);
}

/* Form feedback */
.form-feedback {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
}

.form-feedback .success-message {
  color: var(--accent);
}

.form-feedback .error-message-global {
  color: var(--error);
  display: none;
}

.form-feedback.error .success-message {
  display: none;
}

.form-feedback.error .error-message-global {
  display: block;
}

/* Focus visible for accessibility */
input:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Footer */
.footer {
  background-color: var(--surface);
  padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.footer-logo-social {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-logo img {
  height: 40px;
  width: auto;
  margin-bottom: var(--spacing-md);
}

/* Social media links */
.footer-social {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  margin-top: var(--spacing-md);
}

.footer-social h4 {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
  color: var(--text-primary);
}

.social-links {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-lg);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
  padding: var(--spacing-xs);
  border-radius: 50%;
  background-color: transparent;
}

.social-link:hover {
  color: var(--primary);
  transform: translateY(-2px);
}

.social-link:hover .social-icon {
  fill: var(--primary);
}

.social-icon {
  width: 24px;
  height: 24px;
  fill: var(--text-secondary);
  transition: fill var(--transition-fast);
}

/* Footer legal */
.footer-legal {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  border-top: 1px solid rgba(var(--text-secondary-rgb), 0.2);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.legal-links {
  display: flex;
  gap: var(--spacing-md);
}

.legal-links a {
  color: var(--text-secondary);
}

.legal-links a:hover {
  color: var(--accent);
}

/* Overlay styles */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.overlay.active {
  opacity: 1;
  visibility: visible;
}

.overlay-content {
  background-color: var(--background);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.close-overlay {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-xs);
}

.close-overlay:hover {
  color: var(--text-primary);
}

.overlay h2 {
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
  color: var(--primary);
}

.impressum-content h3 {
  color: var(--text-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
}

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

.coming-soon-content {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.coming-soon-content p {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ON button enhancements */
.on-button.active {
  background-color: var(--accent);
  box-shadow: 0 0 20px rgba(39, 174, 96, 0.6);
}

.on-button.pulse {
  animation: pulse 0.5s ease-in-out;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(39, 174, 96, 0.8);
  }
  50% {
    transform: scale(1.1);
    box-shadow: 0 0 0 10px rgba(39, 174, 96, 0.4);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(39, 174, 96, 0);
  }
}

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

/* Responsive Styles */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero-section h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  /* Mobile-specific hero section adjustments */
  .hero-section {
    justify-content: center;
    min-height: 50vh; /* Further reduce height on mobile */
  }
  
  .hero-section .section-content {
    max-width: 100%;
    background: rgba(var(--background-rgb), 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md) var(--spacing-lg); /* Consistent reduced bottom padding */
  }
  
  .main-nav {
    display: none;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-logo-social {
    align-items: center;
  }
  
  .footer-social {
    align-items: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .footer-links {
    align-items: center;
  }
  
  .footer-links ul {
    grid-template-columns: 1fr 1fr;
    justify-content: center;
  }
  
  .footer-legal {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  /* Increase touch target size for buttons */
  button,
  .cta-button,
  .social-link,
  .lang-btn,
  .theme-toggle {
    min-height: 44px;
    min-width: 44px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* Increase touch target size for links */
  a,
  .footer-links a,
  .main-nav a {
    padding: 8px;
    display: inline-block;
  }
  
  /* Ensure form elements have sufficient touch target size */
  input[type="text"],
  input[type="email"],
  input[type="submit"],
  textarea,
  select {
    min-height: 44px;
    padding: 10px;
  }
  
  /* Adjust spacing for better touch targets */
  .footer-links li,
  .main-nav li {
    margin-bottom: 8px;
  }
  
  /* Ensure social links have proper spacing */
  .social-links {
    gap: var(--spacing-xl);
  }
}

/* Extra small devices (phones) */
@media (max-width: 480px) {
  .cta-container {
    flex-direction: column;
  }
  
  /* Further reduce hero card size on very small screens */
  .hero-section .section-content {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm) var(--spacing-md); /* Reduced padding all around, especially bottom */
  }
  
  .hero-section h1 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs); /* Minimal margin after subtitle */
  }
  
  .values-grid,
  .tech-features {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
}

/* Mobile landscape orientation */
@media (max-width: 896px) and (orientation: landscape) {
  /* Ensure visualization is visible */
  .visualization-container {
    z-index: -1;
  }
}

/* Language Selector */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.language-selector {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  background: none;
  border: 1px solid transparent;
  padding: 0.25rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.lang-btn:hover {
  border-color: var(--primary);
  background-color: rgba(var(--background-rgb), 0.1);
}

.lang-btn.active {
  border-color: var(--primary);
  background-color: rgba(var(--background-rgb), 0.2);
  display: none;
}

/* Show only the inactive language button */
.language-selector [role="radiogroup"] {
  display: flex;
}

.lang-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary);
}

.lang-flag {
  width: 24px;
  height: 14px;
  border-radius: 2px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Content Language Visibility */
.content-en, .content-de {
  display: none;
}

.content-en.active, .content-de.active {
  display: inline-block;
}

/* Special case for block elements */
p > .content-en.active, p > .content-de.active,
div > .content-en.active, div > .content-de.active,
h1 > .content-en.active, h1 > .content-de.active,
h2 > .content-en.active, h2 > .content-de.active,
h3 > .content-en.active, h3 > .content-de.active,
h4 > .content-en.active, h4 > .content-de.active {
  display: block;
}

/* Privacy Policy and Impressum Overlays */
.overlay .overlay-content {
  max-width: 800px;
  max-height: 80vh;
  overflow-y: auto;
  padding: 2rem;
}

.privacy-content, .impressum-content {
  line-height: 1.6;
}

.privacy-content h3, .impressum-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-heading);
}

.privacy-content p, .impressum-content p {
  margin-bottom: 1rem;
}

.privacy-content ul, .impressum-content ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.privacy-content li, .impressum-content li {
  margin-bottom: 0.5rem;
}

/* Footer links */
.footer-links {
  display: flex;
  flex-direction: column;
}

.footer-links h4 {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
  color: var(--text-primary);
}

.footer-links ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm) var(--spacing-lg);
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-size: 0.9rem;
}

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

/* Language Tabs in Overlays */
.language-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(var(--background-rgb), 0.2);
}

.lang-tab {
  background: none;
  border: 1px solid transparent;
  padding: 0.25rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.lang-tab:hover {
  border-color: var(--primary);
  background-color: rgba(var(--background-rgb), 0.1);
}

.lang-tab.active {
  border-color: var(--primary);
  background-color: rgba(var(--background-rgb), 0.2);
  display: none;
}

.lang-tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary);
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background-color 0.3s ease;
  color: var(--text-primary);
}

.theme-toggle:hover {
  background-color: rgba(var(--background-rgb), 0.1);
}

.theme-toggle:focus {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
}

.theme-toggle .light-icon,
.theme-toggle .dark-icon {
  position: absolute;
  width: 24px;
  height: 24px;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.theme-toggle .light-icon {
  opacity: 0;
  transform: scale(0.8) rotate(-30deg);
}

.theme-toggle .dark-icon {
  opacity: 1;
  transform: scale(1) rotate(0);
}

.dark-mode .theme-toggle .light-icon {
  opacity: 1;
  transform: scale(1) rotate(0);
  filter: invert(1);
}

.dark-mode .theme-toggle .dark-icon {
  opacity: 0;
  transform: scale(0.8) rotate(30deg);
}

/* Ensure form elements resize properly with text */
input, textarea, select, button {
  font-size: inherit;
  max-width: 100%;
}

/* Ensure cards and containers can expand with text */
.card, .value-card, .vertical-card {
  min-height: auto;
  height: auto;
  overflow: visible;
}

/* Footer styles */
.attribution-note {
    font-size: 0.85rem;
    margin-top: 0.5rem;
    opacity: 0.8;
}

.attribution-note a {
    color: inherit;
    text-decoration: underline;
}

.attribution-note a:hover {
    text-decoration: none;
}

/* Cookie Notice Banner */
.cookie-notice {
  position: fixed;
  bottom: 20px;
  right: 20px;
  left: auto;
  transform: none;
  width: 320px;
  max-width: 90%;
  background-color: var(--background);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  padding: var(--spacing-md);
  z-index: 999;
  display: flex;
  align-items: center;
  border-left: 4px solid var(--primary);
  animation: slideIn 0.5s ease-out forwards;
  opacity: 0;
  transform: translateX(20px);
}

.dark-mode .cookie-notice {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.cookie-notice-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
}

.cookie-notice-content p {
  margin: 0 0 var(--spacing-sm) 0;
  font-size: 0.9rem;
  line-height: 1.4;
}

.cookie-notice-close {
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background-color 0.2s ease;
  white-space: nowrap;
  font-weight: 500;
  align-self: flex-end;
}

.cookie-notice-close:hover {
  background-color: var(--primary-dark);
}

.cookie-notice.hidden {
  display: none;
}

@keyframes slideIn {
  0% {
    opacity: 0;
    transform: translateX(20px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (max-width: 600px) {
  .cookie-notice {
    bottom: 10px;
    right: 10px;
    width: 280px;
  }
}