/* Responsive design and media queries - Clean Simple Design */

/* Mobile-first approach */

/* Extra small devices (phones, 576px and down) */
@media (max-width: 575.98px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .header-content {
    flex-direction: column;
    gap: 20px;
  }
  
  .nav-links {
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .nav-links a {
    padding: 6px 14px;
    font-size: var(--font-size-base);
  }
  
  .hero h1 {
    font-size: 45px;
  }
  
  .hero .subtitle {
    font-size: 25px;
  }
  
  .hero .description {
    font-size: var(--font-size-base);
  }
  
  .section-title {
    font-size: 35px;
  }
  
  .research-grid,
  .people-grid,
  .fun-grid,
  .achievements-grid,
  .traditions-grid,
  .facts-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .team-preview-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .team-preview-card {
    min-width: auto;
    min-height: 450px;
    padding: var(--spacing-xl);
  }
  
  .team-preview-card__name {
    font-size: var(--font-size-xl); /* Adjusted for mobile */
  }
  
  .team-preview-card__title {
    font-size: var(--font-size-base); /* Adjusted for mobile */
  }
  
  .team-preview-card__research {
    font-size: var(--font-size-sm); /* Adjusted for mobile */
  }
  
  .team-preview-card__image {
    width: 140px;
    height: 140px;
  }
  
  .team-preview-card__emoji {
    font-size: 140px;
  }
  
  .photo-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .publication-item {
    padding: var(--spacing-md);
  }
  
  .publication-links {
    justify-content: center;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .section {
    padding: 40px 0;
  }
  
  .hero {
    padding: 60px 0;
  }
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) and (max-width: 767.98px) {
  .research-grid,
  .people-grid,
  .fun-grid {
    grid-template-columns: 1fr;
  }
  
  .team-preview-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
  
  .team-preview-card {
    min-width: auto;
    min-height: 480px;
    padding: var(--spacing-xl);
  }
  
  .team-preview-card__image {
    width: 160px;
    height: 160px;
  }
  
  .team-preview-card__emoji {
    font-size: 160px;
  }
  
  .achievements-grid,
  .traditions-grid {
    grid-template-columns: 1fr;
  }
  
  .facts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .photo-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .nav-links {
    gap: var(--spacing-lg);
  }
  
  .nav-links a {
    padding: 6px 14px;
    font-size: var(--font-size-lg);
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) and (max-width: 991.98px) {
  .hero h1 {
    font-size: 52px;
  }
  
  .research-grid,
  .people-grid,
  .fun-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .team-preview-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
  
  .team-preview-card {
    min-width: auto;
    min-height: 500px;
    padding: 40px;
  }
  
  .team-preview-card__name {
    font-size: var(--font-size-2xl); /* Keep larger size on tablet */
  }
  
  .team-preview-card__title {
    font-size: var(--font-size-lg); /* Keep larger size on tablet */
  }
  
  .team-preview-card__research {
    font-size: var(--font-size-base); /* Keep larger size on tablet */
  }
  
  .team-preview-card__image {
    width: 170px;
    height: 170px;
  }
  
  .team-preview-card__emoji {
    font-size: 170px;
  }
  
  .achievements-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .traditions-grid {
    grid-template-columns: 1fr;
  }
  
  .facts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .photo-gallery {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .nav-links {
    gap: var(--spacing-lg);
  }
  
  .header-content {
    flex-direction: row;
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
  .nav-links {
    gap: var(--spacing-xl);
  }
  
  .nav-links a {
    padding: 6px 14px;
    font-size: 26px;
  }
  
  .research-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .people-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .fun-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .achievements-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .traditions-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .facts-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .photo-gallery {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .header-content {
    flex-direction: row;
  }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  .research-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .people-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .fun-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .achievements-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .traditions-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .facts-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .photo-gallery {
    grid-template-columns: repeat(6, 1fr);
  }
  
  .nav-links {
    gap: 30px;
  }
  
  .nav-links a {
    padding: 8px 16px;
  }
}

/* Always keep navigation horizontal - no mobile dropdown */
@media (max-width: 767.98px) {
  .nav-links {
    display: flex !important;
    position: static !important;
    background: transparent !important;
    padding: 0 !important;
    box-shadow: none !important;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  
  .nav-links::-webkit-scrollbar {
    display: none;
  }
  
  .nav-links li {
    margin: 0;
    flex-shrink: 0;
  }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-height: 600px) {
  .hero {
    height: auto;
    min-height: 80vh;
    padding: var(--spacing-3xl) 0;
  }
  
  .hero h1 {
    font-size: 45px;
  }
  
  .hero .subtitle {
    font-size: var(--font-size-lg);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  header {
    padding: var(--spacing-sm) 0;
  }
  
  .nav-links a {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
}


/* High DPI displays */
@media (min-resolution: 2dppx) {
  .logo {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* Print styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
  
  header,
  .cta-button,
  .site-footer {
    display: none !important;
  }
  
  .hero {
    background: white !important;
    color: black !important;
    height: auto !important;
    padding: var(--spacing-xl) 0;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
    page-break-inside: avoid;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  header {
    border-bottom: 2px solid #000000 !important;
  }
  
  .nav-links a {
    border: 2px solid #000000 !important;
  }
  
  .research-card,
  .publication-item {
    border: 2px solid #000000 !important;
  }
}

/* Touch device optimizations */
@media (pointer: coarse) {
  .nav-links a {
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
  }
  
  .btn,
  .cta-button,
  .submit-btn {
    min-height: 44px;
    padding: var(--spacing-md) var(--spacing-lg);
  }
}

/* Responsive adjustments for intersection graph */
@media (max-width: 768px) {
  .intersection-graph {
    width: 250px;
    height: 250px;
  }
  
  .intersection-circle {
    width: 150px;
    height: 150px;
    font-size: var(--font-size-sm); /* Increased from xs to sm */
  }
  
  .intersection-center {
    width: 80px;
    height: 80px;
    font-size: var(--font-size-sm); /* Increased from xs to sm */
  }
}