/* Responsive Design - Mobile First Approach */

/* Large Desktop (1200px and up) */
@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
  
  .hero-title {
    font-size: 4rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop (992px to 1199px) */
@media (max-width: 1199px) {
  .container {
    max-width: 992px;
    padding: 0 var(--spacing-lg);
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .featured-grid {
    grid-template-columns: 1fr;
  }
  
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .education-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet (768px to 991px) */
@media (max-width: 991px) {
  .container {
    max-width: 768px;
    padding: 0 var(--spacing-md);
  }
  
  /* Navigation */
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: var(--spacing-2xl);
    padding: var(--spacing-3xl) 0;
    transition: left var(--transition-normal);
    border-right: 1px solid var(--border-primary);
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: block;
  }
  
  .nav-link {
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) 0;
  }
  
  /* Hero Section */
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .avatar {
    width: 150px;
    height: 150px;
    font-size: 3rem;
  }
  
  /* Sections */
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  /* Stats Grid */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
  
  .stat-card {
    padding: var(--spacing-lg);
  }
  
  .stat-number {
    font-size: var(--font-size-3xl);
  }
  
  /* Featured Work */
  .featured-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .featured-card {
    padding: var(--spacing-xl);
  }
  
  /* Blog Controls */
  .blog-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-md);
  }
  
  .search-container {
    max-width: none;
  }
  
  /* Blog and Projects Grid */
  .blog-grid,
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  /* Project Filters */
  .project-filters {
    gap: var(--spacing-sm);
  }
  
  .filter-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  /* Skills Grid */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  /* Timeline */
  .timeline::before {
    left: 20px;
  }
  
  .timeline-item {
    padding-left: calc(var(--spacing-2xl) + var(--spacing-lg));
  }
  
  .timeline-marker {
    left: 12px;
  }
  
  /* Education Grid */
  .education-grid {
    grid-template-columns: 1fr;
  }
  
  /* Contact Content */
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
}

/* Small Tablet and Large Mobile (576px to 767px) */
@media (max-width: 767px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  /* Typography */
  .hero-title {
    font-size: 2.5rem;
    line-height: 1.2;
  }
  
  .section-title {
    font-size: var(--font-size-xl);
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  /* Header */
  .nav-container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-logo {
    font-size: var(--font-size-lg);
  }
  
  /* Hero Section */
  .hero-description {
    font-size: var(--font-size-base);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
  
  .avatar {
    width: 120px;
    height: 120px;
    font-size: 2.5rem;
  }
  
  /* Stats Grid */
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .stat-card {
    padding: var(--spacing-md);
  }
  
  .stat-number {
    font-size: var(--font-size-2xl);
  }
  
  /* Cards */
  .featured-card,
  .blog-card .blog-content,
  .project-card .project-content {
    padding: var(--spacing-lg);
  }
  
  .about-story {
    padding: var(--spacing-lg);
  }
  
  .skill-category,
  .timeline-content,
  .education-card {
    padding: var(--spacing-lg);
  }
  
  /* Blog Image */
  .blog-image {
    height: 150px;
  }
  
  .blog-placeholder {
    font-size: var(--font-size-2xl);
  }
  
  /* Project Image */
  .project-image {
    height: 180px;
  }
  
  .project-placeholder {
    font-size: var(--font-size-3xl);
  }
  
  /* Project Filters */
  .project-filters {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
  }
  
  .filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }
  
  /* Project Metrics */
  .project-metrics {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  
  .metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
  
  /* Timeline */
  .timeline::before {
    left: 15px;
  }
  
  .timeline-item {
    padding-left: var(--spacing-2xl);
  }
  
  .timeline-marker {
    left: 7px;
    width: 14px;
    height: 14px;
  }
  
  .timeline-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }
  
  /* Education Cards */
  .education-card {
    flex-direction: column;
    text-align: center;
  }
  
  .education-icon {
    align-self: center;
  }
  
  /* Contact Items */
  .contact-item {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  /* Form */
  .contact-form-container {
    padding: var(--spacing-lg);
  }
  
  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .social-links {
    justify-content: center;
  }
}

/* Mobile (480px to 575px) */
@media (max-width: 575px) {
  /* Base adjustments */
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  /* Typography */
  .hero-title {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: var(--font-size-lg);
  }
  
  /* Header */
  .nav-container {
    padding: 0 var(--spacing-sm);
    height: 60px;
  }
  
  .main {
    margin-top: 60px;
  }
  
  .nav-menu {
    top: 60px;
    height: calc(100vh - 60px);
  }
  
  /* Sections */
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .section-header {
    margin-bottom: var(--spacing-2xl);
  }
  
  /* Hero */
  .hero-content {
    min-height: 50vh;
  }
  
  .hero-description {
    font-size: var(--font-size-sm);
  }
  
  .avatar {
    width: 100px;
    height: 100px;
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
  }
  
  /* TL;DR Section */
  .tldr-section {
    padding: var(--spacing-lg);
  }
  
  /* Cards */
  .featured-card,
  .blog-card .blog-content,
  .project-card .project-content,
  .about-story,
  .skill-category,
  .timeline-content,
  .contact-form-container {
    padding: var(--spacing-md);
  }
  
  /* Education Cards */
  .education-card {
    padding: var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .education-icon {
    width: 50px;
    height: 50px;
    font-size: var(--font-size-lg);
  }
  
  /* Blog Stats */
  .blog-stats {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  /* Tech Tags */
  .project-tech,
  .card-metrics {
    gap: var(--spacing-xs);
  }
  
  .tech-tag,
  .metric {
    font-size: 0.7rem;
    padding: 2px var(--spacing-xs);
  }
  
  /* Contact Icons */
  .contact-icon {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-base);
  }
}

/* Extra Small Mobile (up to 479px) */
@media (max-width: 479px) {
  /* Typography */
  .hero-title {
    font-size: 1.75rem;
  }
  
  .section-title {
    font-size: var(--font-size-base);
  }
  
  /* Spacing adjustments */
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  .section-header {
    margin-bottom: var(--spacing-xl);
  }
  
  /* Hero */
  .hero-content {
    gap: var(--spacing-xl);
  }
  
  .hero-actions {
    gap: var(--spacing-sm);
  }
  
  /* Avatar */
  .avatar {
    width: 80px;
    height: 80px;
    font-size: 1.5rem;
  }
  
  /* Stats */
  .stat-number {
    font-size: var(--font-size-xl);
  }
  
  .stat-label {
    font-size: var(--font-size-base);
  }
  
  /* Cards - minimal padding */
  .featured-card,
  .blog-card .blog-content,
  .project-card .project-content,
  .about-story,
  .skill-category,
  .timeline-content,
  .contact-form-container,
  .education-card {
    padding: var(--spacing-sm);
  }
  
  .tldr-section {
    padding: var(--spacing-md);
  }
  
  /* Images */
  .blog-image,
  .project-image {
    height: 120px;
  }
  
  /* Footer */
  .footer {
    padding: var(--spacing-xl) 0;
  }
  
  .footer-section h4 {
    font-size: var(--font-size-base);
  }
  
  .social-links a {
    width: 35px;
    height: 35px;
  }
}

/* Landscape Orientation Adjustments for Mobile */
@media (max-width: 767px) and (orientation: landscape) {
  .hero-content {
    grid-template-columns: 1fr auto;
    text-align: left;
  }
  
  .avatar {
    width: 80px;
    height: 80px;
    font-size: 1.5rem;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .nav-menu {
    height: calc(100vh - 60px);
    padding: var(--spacing-xl) 0;
  }
}

/* Print Styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  .header,
  .nav-toggle,
  .theme-toggle,
  .footer,
  .btn {
    display: none !important;
  }
  
  .main {
    margin-top: 0 !important;
  }
  
  .section {
    display: block !important;
    page-break-inside: avoid;
  }
  
  .project-card,
  .blog-card,
  .education-card {
    page-break-inside: avoid;
  }
  
  a::after {
    content: " (" attr(href) ")";
  }
}

/* High DPI / Retina Display Optimizations */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .avatar,
  .contact-icon,
  .education-icon {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Increase touch targets */
  .nav-link,
  .btn,
  .filter-btn,
  .theme-toggle,
  .nav-toggle {
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Remove hover effects on touch devices */
  .featured-card:hover,
  .blog-card:hover,
  .project-card:hover,
  .stat-card:hover,
  .contact-item:hover,
  .education-card:hover {
    transform: none;
  }
  
  .project-overlay {
    opacity: 1;
  }
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  .hero-content,
  .stats-grid,
  .featured-grid,
  .blog-grid,
  .projects-grid {
    animation: none;
  }
  
  .scroll-hidden {
    opacity: 1;
    transform: none;
  }
}

/* Dark Mode Specific Responsive Adjustments */
@media (max-width: 767px) {
  .dark-mode .nav-menu {
    background: var(--bg-primary);
    border-right: 1px solid var(--border-primary);
  }
}

/* Accessibility - Focus Visibility */
@media (max-width: 767px) {
  *:focus {
    outline-width: 3px;
    outline-offset: 3px;
  }
  
  .nav-link:focus {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
  }
}