/* Responsive Design - Mobile First Approach */

/* Large screens (desktops) */
@media (max-width: 1200px) {
  .info-content {
    gap: var(--spacing-3xl);
  }
  
  .info-avatar {
    width: 250px;
    height: 250px;
  }
}

/* Medium screens (tablets) */
@media (max-width: 768px) {
  :root {
    --font-size-6xl: 2.5rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
    --font-size-lg: 1.125rem;
    --font-size-base: 1rem;
    --section-padding: var(--spacing-3xl) 0;
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

  /* Navigation */
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: white;
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--shadow-lg);
    gap: 0;
    padding: var(--spacing-xl) 0;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-item {
    margin: var(--spacing-md) 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Language selector */
  .language-selector {
    height: 60px;
    padding-right: var(--spacing-sm);
  }

  .lang-select {
    min-width: 60px;
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) 20px var(--spacing-xs) var(--spacing-xs);
    background-size: 8px;
    background-position: right 4px center;
  }

  /* Info section */
  .info-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }

  .info-avatar {
    width: 200px;
    height: 200px;
    order: -1;
  }

  .info-name {
    font-size: var(--font-size-4xl);
  }

  .info-title {
    font-size: var(--font-size-2xl);
  }

  .info-subtitle {
    font-size: var(--font-size-base);
  }

  /* Info contact section */
  .info-social-links {
    justify-content: center;
    gap: var(--spacing-sm);
  }

  .info-social-links .social-link {
    width: 45px;
    height: 45px;
    font-size: var(--font-size-lg);
  }

  /* Resume section */
  .resume-content {
    display: block;
  }

  /* Projects grid */
  .projects-grid {
    grid-template-columns: 1fr;
  }



  /* Interests section */
  .main-interest {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl);
  }

  .interest-image img {
    height: 250px;
  }

  .interests-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  /* Projects page */
  .featured-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl);
  }

  .featured-image img {
    height: 300px;
  }

  .project-actions {
    flex-direction: column;
  }

  .all-projects-grid {
    grid-template-columns: 1fr;
  }

  /* Timeline adjustments */
  .timeline::before {
    left: 15px;
  }

  .timeline-item {
    padding-left: var(--spacing-2xl);
  }

  .timeline-item::before {
    left: 7px;
    width: 14px;
    height: 14px;
  }
}

/* Small screens (mobile phones) */
@media (max-width: 480px) {
  :root {
    --font-size-6xl: 2rem;
    --font-size-5xl: 1.75rem;
    --font-size-4xl: 1.5rem;
    --font-size-3xl: 1.25rem;
    --section-padding: var(--spacing-2xl) 0;
    --container-padding: var(--spacing-md);
  }

  .container {
    padding: 0 var(--spacing-md);
  }

  /* Navigation */
  .nav-container {
    height: 60px;
    padding: 0 var(--spacing-md);
    padding-right: 80px; /* 为移动端语言选择器留出空间 */
  }

  .nav-logo {
    font-size: var(--font-size-lg);
  }

  .nav-menu {
    top: 60px;
  }

  /* Info section */
  .info-avatar {
    width: 150px;
    height: 150px;
  }

  .info-name {
    font-size: var(--font-size-3xl);
  }

  .info-title {
    font-size: var(--font-size-xl);
  }

  .cta-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
  }

  /* Info contact section */
  .info-social-links .social-link {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-base);
  }

  .info-contact-info .contact-item {
    font-size: var(--font-size-sm);
  }

  /* Cards and components */
  .project-card,
  .timeline-content,
  .skill-item {
    margin: 0 var(--spacing-xs);
  }

  .project-content {
    padding: var(--spacing-lg);
  }

  /* Contact section */
  .contact-item {
    flex-direction: column;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
  }

  .social-links {
    gap: var(--spacing-md);
  }

  .social-link {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-lg);
  }

  /* Typography adjustments */
  .section-title {
    font-size: var(--font-size-3xl);
  }

  .about-description {
    font-size: var(--font-size-base);
  }
}

/* Extra small screens */
@media (max-width: 320px) {
  :root {
    --font-size-6xl: 1.75rem;
    --font-size-5xl: 1.5rem;
    --container-padding: var(--spacing-sm);
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .nav-container {
    padding: 0 var(--spacing-sm);
  }

  .info-name {
    font-size: var(--font-size-2xl);
  }


}

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

/* Print styles */
@media print {
  .language-selector,
  .navbar,
  .scroll-indicator,
  .social-links {
    display: none;
  }

  .info {
    min-height: auto;
    padding: var(--spacing-xl) 0;
  }

  .section {
    page-break-inside: avoid;
    padding: var(--spacing-lg) 0;
  }

  body {
    font-size: 12px;
    line-height: 1.4;
  }

  .info-name {
    font-size: 24px;
  }

  .section-title {
    font-size: 18px;
  }
}

/* Landscape orientation on mobile */
@media (max-width: 768px) and (orientation: landscape) {
  .info {
    min-height: auto;
    padding: var(--spacing-2xl) 0;
  }

  .info-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }

  .info-avatar {
    width: 120px;
    height: 120px;
  }
}

/* Mobile phones (smaller screens) */
@media (max-width: 480px) {
  :root {
    --font-size-6xl: 2.25rem;
    --font-size-5xl: 1.875rem;
    --font-size-4xl: 1.75rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.375rem;
    --font-size-xl: 1.25rem;
    --font-size-lg: 1.125rem;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --section-padding: var(--spacing-2xl) 0;
    --container-padding: var(--spacing-lg);
  }
  
  /* 强制显示内容 - 移动端修复 */
  .info-content {
    display: grid !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  .info-text {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  .info-name, .info-title, .info-subtitle {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    color: var(--text-color) !important;
  }
  
  /* 确保项目内容显示 */
  .projects-grid {
    display: grid !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  .project-card {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  /* 确保兴趣内容显示 */
  .interests-grid {
    display: grid !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  
  .interest-card {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
  }

  .container {
    padding: 0 var(--spacing-md);
    max-width: 100%;
  }

  /* Ensure text is readable */
  body {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
  }

  /* Navigation improvements */
  .navbar {
    padding: var(--spacing-sm) 0;
    min-height: 60px;
  }

  .nav-logo {
    font-size: var(--font-size-lg);
  }

  .nav-menu {
    top: 60px;
    padding: var(--spacing-lg) 0;
  }

  .nav-link {
    font-size: var(--font-size-base);
    padding: var(--spacing-md) 0;
  }

  /* Info section mobile optimization */
  .info-content {
    padding: var(--spacing-xl) 0;
    gap: var(--spacing-xl);
  }

  .info-name {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
  }

  .info-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
  }

  .info-subtitle {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-lg);
  }

  .info-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
  }

  /* Social links mobile */
  .info-social-links .social-link {
    width: 50px;
    height: 50px;
    font-size: var(--font-size-xl);
  }

  /* Project cards mobile */
  .project-card {
    padding: var(--spacing-lg);
  }

  .project-card h3 {
    font-size: var(--font-size-xl);
  }

  .project-card p {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
  }

  /* Photography mobile */
  .photography-title {
    font-size: var(--font-size-4xl);
  }

  .photography-subtitle {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
  }

  /* Modal improvements for mobile */
  .modal-content {
    margin: var(--spacing-md);
    max-height: calc(100vh - 2rem);
  }

  .modal-title {
    font-size: var(--font-size-xl);
  }

  .modal-description {
    font-size: var(--font-size-base);
  }
}

/* Dark mode responsive adjustments */
@media (prefers-color-scheme: dark) {
  .navbar {
    background: rgba(26, 26, 26, 0.95);
  }

  .nav-menu {
    background: var(--background-color);
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .info-avatar::before {
    animation: none;
  }

  .scroll-indicator {
    animation: none;
  }

  .animate-float,
  .animate-pulse,
  .animate-glow {
    animation: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .cta-button {
    border-width: 3px;
  }

  .nav-link::after {
    height: 3px;
  }

  .section-title::after {
    height: 6px;
  }
}