/* ==========================================
   Responsive Styles
   ========================================== */

/* Tablet and below (768px) */
@media (max-width: 768px) {
  /* Typography adjustments */
  :root {
    --text-6xl: 2.5rem;
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
  }

  /* Navigation */
  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 70px);
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    gap: var(--space-4);
  }

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

  .nav-link {
    font-size: var(--text-lg);
    padding: var(--space-3) 0;
  }

  /* Hero Section */
  .hero-section {
    min-height: calc(100vh - 70px);
    padding-top: var(--space-16);
  }

  .profile-image {
    width: 120px;
  }

  .hero-title {
    font-size: var(--text-5xl);
  }

  .hero-subtitle {
    font-size: var(--text-lg);
  }

  .hero-tagline {
    font-size: var(--text-base);
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  /* Section padding */
  .section-padding {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }

  /* About Section */
  .achievements-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
  }

  .achievement-number {
    font-size: var(--text-4xl);
  }

  /* Skills Section */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* Timeline */
  .timeline {
    padding-left: var(--space-6);
  }

  .timeline-item {
    padding-left: var(--space-6);
  }

  .timeline-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .time-period {
    align-self: flex-start;
  }

  .company-name {
    font-size: var(--text-xl);
  }

  .position {
    font-size: var(--text-base);
  }

  /* Projects */
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* Blog */
  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-main {
    padding-right: 0;
  }
}

/* Mobile (640px and below) */
@media (max-width: 640px) {
  /* Typography */
  :root {
    --text-6xl: 2rem;
    --text-5xl: 1.75rem;
    --text-4xl: 1.5rem;
    --container-padding: 1rem;
  }

  /* Hero */
  .profile-image {
    width: 100px;
  }

  .social-links {
    gap: var(--space-3);
  }

  .social-link {
    width: 40px;
    height: 40px;
  }

  .social-link svg {
    width: 20px;
    height: 20px;
  }

  /* Section titles */
  .section-title {
    font-size: var(--text-3xl);
  }

  .section-title::after {
    width: 40px;
  }

  /* Achievement cards */
  .achievements-grid {
    grid-template-columns: 1fr;
  }

  .achievement-card {
    padding: var(--space-6);
  }

  .achievement-number {
    font-size: var(--text-3xl);
  }

  /* Skills */
  .skill-category {
    padding: var(--space-6);
  }

  /* Timeline */
  .timeline {
    padding-left: var(--space-4);
  }

  .timeline-item {
    padding-left: var(--space-4);
    margin-bottom: var(--space-8);
  }

  .timeline-content {
    padding: var(--space-6);
  }

  /* Projects */
  .project-filters {
    gap: var(--space-2);
  }

  .filter-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .project-card {
    margin-bottom: 0;
  }

  .project-info {
    padding: var(--space-6);
  }

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

  .project-stats {
    flex-direction: column;
    gap: var(--space-2);
  }

  /* Blog */
  .blog-card {
    margin-bottom: 0;
  }

  .blog-content {
    padding: var(--space-6);
  }

  .blog-title {
    font-size: var(--text-lg);
  }

  /* Contact */
  .contact-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  /* Footer */
  .site-footer {
    padding: var(--space-12) 0 var(--space-6);
  }

  .footer-tagline {
    font-size: var(--text-base);
  }
}

/* Small mobile (480px and below) */
@media (max-width: 480px) {
  /* Hero */
  .hero-title {
    font-size: 1.75rem;
  }

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

  .hero-tagline {
    font-size: var(--text-sm);
  }

  /* Buttons */
  .btn-primary,
  .btn-secondary {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
  }

  /* Section padding */
  .section-padding {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
  }

  /* Achievement cards - stack vertically */
  .achievement-number {
    font-size: var(--text-2xl);
  }

  .achievement-label {
    font-size: var(--text-base);
  }

  /* Tags */
  .tag,
  .tech-tag,
  .blog-tag {
    font-size: 0.7rem;
    padding: 2px var(--space-2);
  }
}

/* Landscape mobile phones */
@media (max-height: 600px) and (orientation: landscape) {
  .hero-section {
    min-height: auto;
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }

  .scroll-indicator {
    display: none;
  }

  .profile-image {
    width: 80px;
    margin-bottom: var(--space-4);
  }

  .hero-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-2);
  }

  .hero-subtitle {
    font-size: var(--text-base);
    margin-bottom: var(--space-2);
  }

  .hero-tagline {
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
  }

  .hero-cta {
    flex-direction: row;
    margin-bottom: var(--space-4);
  }

  .social-links {
    margin-top: var(--space-4);
  }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  /* Increase touch targets */
  .nav-link,
  .btn-primary,
  .btn-secondary,
  .social-link,
  .filter-btn,
  .expand-toggle {
    min-height: 44px;
    min-width: 44px;
  }

  /* Remove hover effects that don't work on touch */
  .card:hover,
  .achievement-card:hover,
  .timeline-content:hover,
  .project-card:hover,
  .blog-card:hover {
    transform: none;
  }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Optimize images and borders for retina displays */
  .timeline::before {
    width: 1px;
  }

  .hamburger-line {
    height: 2px;
  }
}

/* Print styles */
@media print {
  .main-nav,
  .hero-cta,
  .social-links,
  .scroll-indicator,
  .filter-btn,
  .expand-toggle,
  .project-filters {
    display: none !important;
  }

  .hero-section {
    min-height: auto;
    padding: var(--space-8) 0;
  }

  .section-padding {
    padding: var(--space-8) 0;
  }

  .timeline::before {
    display: none;
  }

  .timeline {
    padding-left: 0;
  }

  .timeline-item {
    padding-left: 0;
    break-inside: avoid;
  }

  .timeline-marker {
    display: none;
  }

  .experience-details {
    max-height: none !important;
  }

  .project-card,
  .blog-card {
    break-inside: avoid;
  }

  body {
    background: white;
  }

  .bg-dark {
    background: white;
    color: black;
  }
}