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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
  color: #f5f5f5;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
.header {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  font-size: 2rem;
  font-weight: bold;
  color: #00d4ff;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: #f5f5f5;
  text-decoration: none;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #00d4ff;
}

/* Hero Section */
.hero {
  padding: 8rem 0 4rem;
  text-align: center;
  background: linear-gradient(45deg, rgba(0, 212, 255, 0.1), rgba(255, 0, 150, 0.1));
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, #00d4ff, #ff0096);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.3rem;
  color: #b8b8b8;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: linear-gradient(45deg, #00d4ff, #ff0096);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: bold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* Main Content */
.main-content {
  padding: 2rem 0;
}

.section {
  margin: 4rem 0;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.section h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
  background: linear-gradient(45deg, #00d4ff, #ff0096);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #b8b8b8;
  margin-bottom: 2rem;
}

/* Question Grid */
.question-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.question-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(30px);
}

.question-card.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.question-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.question-card h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #00d4ff;
}

.question-card p {
  margin-bottom: 1rem;
  color: #b8b8b8;
}

.answer {
  padding: 1rem;
  border-radius: 10px;
  margin-top: 1rem;
}

.answer.correct {
  background: rgba(0, 255, 0, 0.1);
  border: 1px solid rgba(0, 255, 0, 0.3);
}

.answer.incorrect {
  background: rgba(255, 0, 0, 0.1);
  border: 1px solid rgba(255, 0, 0, 0.3);
}

/* Robot Forms */
.robot-forms {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.robot-form {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(30px);
}

.robot-form.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.robot-form:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.robot-form h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #00d4ff;
}

.robot-form p {
  margin-bottom: 1rem;
  color: #b8b8b8;
}

.features {
  list-style: none;
  margin-top: 1rem;
}

.features li {
  padding: 0.5rem 0;
  color: #b8b8b8;
  position: relative;
  padding-left: 1.5rem;
}

.features li::before {
  content: "▶";
  color: #00d4ff;
  position: absolute;
  left: 0;
}

/* Roboverse */
.roboverse-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.roboverse-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(30px);
}

.roboverse-item.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.roboverse-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.roboverse-item h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: #00d4ff;
}

.roboverse-item p {
  margin-bottom: 1rem;
  color: #b8b8b8;
}

/* Research Section */
.research-content {
  max-width: 800px;
  margin: 0 auto;
}

.research-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 15px;
  padding: 2rem;
  backdrop-filter: blur(10px);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(30px);
}

.research-item.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.research-item h4 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #00d4ff;
}

.research-item p {
  margin-bottom: 1rem;
  color: #b8b8b8;
}

.technical-details, .philosophy-validation {
  margin: 2rem 0;
}

.technical-details h5, .philosophy-validation h5 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #00d4ff;
}

.technical-details ul, .philosophy-validation ul {
  list-style: none;
  margin-left: 1rem;
}

.technical-details li, .philosophy-validation li {
  padding: 0.5rem 0;
  color: #b8b8b8;
  position: relative;
  padding-left: 1.5rem;
}

.technical-details li::before, .philosophy-validation li::before {
  content: "▶";
  color: #00d4ff;
  position: absolute;
  left: 0;
}

/* Footer */
.footer {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  padding: 3rem 0;
  text-align: center;
  margin-top: 4rem;
}

.footer h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, #00d4ff, #ff0096);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer p {
  color: #b8b8b8;
  margin-bottom: 1rem;
}

.copyright {
  font-size: 0.9rem;
  color: #888;
  margin-top: 2rem;
}

.email {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: #b8b8b8;
  margin-top: 1rem;
}

.gmail-icon {
  width: 20px;
  height: 20px;
  color: #00d4ff;
}

/* Image Styling */
.image-container {
  margin: 2rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.image-container img {
  max-width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
  opacity: 1;
  transform: scale(1);
}



.image-container img:hover {
  transform: scale(1.02);
  box-shadow: 0 15px 40px rgba(0, 212, 255, 0.2);
}

.image-caption {
  margin-top: 1rem;
  font-style: italic;
  color: #b8b8b8;
  font-size: 0.9rem;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.image-grid .image-container {
  margin: 0;
}

/* Lazy Loading Placeholder */
.image-placeholder {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(255, 0, 150, 0.1));
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  color: #888;
  font-style: italic;
}

.image-placeholder::before {
  content: "🖼️ Loading...";
  font-size: 1.2rem;
}

/* Responsive Images */
@media (max-width: 768px) {
  .image-grid {
    grid-template-columns: 1fr;
  }
  
  .image-container img {
    border-radius: 10px;
  }
  
  .image-placeholder {
    min-height: 150px;
  }
}

/* High DPI Display Support */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .image-container img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Print Styles */
@media print {
  .image-container img {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  .image-caption {
    color: #000;
  }
}

/* ===== MOBILE RESPONSIVENESS ===== */

/* Large Mobile and Small Tablet */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .header {
    padding: 0.5rem 0;
  }
  
  .logo {
    font-size: 1.5rem;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .nav-links a {
    font-size: 0.9rem;
  }
  
  .hero {
    padding: 6rem 0 3rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
    line-height: 1.2;
  }
  
  .hero p {
    font-size: 1.1rem;
    padding: 0 1rem;
  }
  
  .cta-button {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
    padding: 0 1rem;
  }
  
  .question-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .question-card {
    padding: 1.5rem;
  }
  
  .question-card h4 {
    font-size: 1.3rem;
  }
  
  .robot-forms {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .robot-form {
    padding: 1.5rem;
  }
  
  .robot-form h4 {
    font-size: 1.3rem;
  }
  
  .roboverse-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .roboverse-item {
    padding: 1.5rem;
  }
  
  .roboverse-item h4 {
    font-size: 1.3rem;
  }
  
  .research-item {
    padding: 1.5rem;
  }
  
  .research-item h4 {
    font-size: 1.5rem;
  }
  
  .footer {
    padding: 2rem 0;
  }
  
  .footer h2 {
    font-size: 2rem;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 0.5rem;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.8rem;
  }
  
  .nav-links a {
    font-size: 0.8rem;
  }
  
  .hero {
    padding: 5rem 0 2rem;
  }
  
  .hero h1 {
    font-size: 2rem;
    padding: 0 0.5rem;
  }
  
  .hero p {
    font-size: 1rem;
    padding: 0 0.5rem;
  }
  
  .cta-button {
    padding: 0.7rem 1.2rem;
    font-size: 0.8rem;
  }
  
  .section h2 {
    font-size: 1.8rem;
    padding: 0 0.5rem;
  }
  
  .section-subtitle {
    font-size: 0.9rem;
    padding: 0 0.5rem;
  }
  
  .question-card, .robot-form, .roboverse-item, .research-item {
    padding: 1rem;
    margin: 0 0.5rem;
  }
  
  .question-card h4, .robot-form h4, .roboverse-item h4 {
    font-size: 1.2rem;
  }
  
  .research-item h4 {
    font-size: 1.3rem;
  }
  
  .features li, .technical-details li, .philosophy-validation li {
    font-size: 0.9rem;
    padding-left: 1.2rem;
  }
  
  .footer h2 {
    font-size: 1.8rem;
  }
  
  .footer p {
    font-size: 0.9rem;
  }
}

/* Landscape Mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    padding: 4rem 0 2rem;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .section {
    margin: 2rem 0;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  .question-card:hover,
  .robot-form:hover,
  .roboverse-item:hover,
  .cta-button:hover {
    transform: none;
    box-shadow: none;
  }
  
  .image-container img:hover {
    transform: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }
  
  .nav-links a:hover {
    color: #f5f5f5;
  }
}

/* High DPI Mobile Displays */
@media (-webkit-min-device-pixel-ratio: 2) and (max-width: 768px) {
  .hero h1 {
    font-weight: 300;
  }
  
  .section h2 {
    font-weight: 300;
  }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .fade-in {
    opacity: 1;
    transform: none;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0f0f0f 100%);
  }
}

/* GitLab Pages Specific Optimizations */
@media (min-width: 1200px) {
  .container {
    max-width: 1400px;
  }
  
  .hero h1 {
    font-size: 4rem;
  }
  
  .hero p {
    font-size: 1.4rem;
  }
  
  .section h2 {
    font-size: 3rem;
  }
}