/* ============================================================
   Responsive adjustments
   ============================================================ */

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(10, 10, 12, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0.25rem;
  }

  .main-nav a {
    padding: 0.75rem 1rem;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero {
    min-height: auto;
    padding: 3.5rem 0 4rem;
  }

  .section {
    padding: 3.5rem 0;
  }

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

@media (min-width: 769px) {
  .about-grid {
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .hero-actions .btn,
  .cta-actions .btn {
    width: 100%;
  }
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}


/* Mobile: drawer + back */
@media (max-width: 768px) {
  .back-btn { display: inline-flex; }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    padding: 8px;
    cursor: pointer;
    z-index: 100;
  }
  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(300px, 85vw);
    height: 100vh;
    height: 100dvh;
    background: var(--bg-elevated, #0d1117);
    border-left: 1px solid var(--border);
    padding: 4.5rem 1.25rem 2rem;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 95;
    overflow-y: auto;
  }
  .main-nav.is-open {
    transform: translateX(0);
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
  }
  .main-nav a {
    display: block;
    padding: 0.85rem 1rem;
    border-radius: 8px;
  }
  .header-inner {
    gap: 0.5rem;
  }
}