/* Responsive CSS */
@media (max-width: 1200px) {
  html {
    font-size: 60%;
  }
  
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
  }
}

@media (max-width: 992px) {
  html {
    font-size: 58%;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .about-text {
    order: 1;
  }
  
  .skills {
    order: 2;
  }
  
  .contact-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .contact-form {
    order: 1;
  }
  
  .contact-info {
    order: 2;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 56%;
  }
  
  .hero h1 {
    font-size: 6rem;
  }
  
  .roles span {
    font-size: 2.8rem;
  }
  
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
  }
  
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    overflow: hidden;
    transition: height var(--transition-speed) ease;
    z-index: 99;
    border-bottom: 1px solid var(--nav-border);
  }
  
  .main-nav.active {
    height: calc(100vh - var(--header-height));
  }
  
  .main-nav ul {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: var(--spacing-xl);
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
  }
  
  .main-nav.active ul {
    opacity: 1;
  }
  
  .nav-link {
    font-size: 2.4rem;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }
}

@media (max-width: 576px) {
  html {
    font-size: 54%;
  }
  
  .hero h1 {
    font-size: 5rem;
  }
  
  .roles span {
    font-size: 2.4rem;
  }
  
  .hero-cta {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .section-title {
    font-size: 3.6rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-buttons {
    flex-wrap: wrap;
  }
  
  #themeToggle {
    width: 4.5rem;
    height: 4.5rem;
  }
  
  .theme-toggle {
    bottom: 2rem;
    right: 2rem;
  }
}

@media (max-width: 380px) {
  html {
    font-size: 52%;
  }
  
  .hero h1 {
    font-size: 4.4rem;
  }
  
  .roles span {
    font-size: 2.2rem;
  }
}