/* ==========================================================================
   RESPONSIVE STYLES & MEDIA QUERIES
   Breakpoints: 1024px (Tablet/Small Laptop), 768px (Tablet), 480px (Mobile)
   ========================================================================== */

@media (max-width: 1024px) {
  .about-grid,
  .edu-cert-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .approach-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dash-columns,
  .stego-sim-grid {
    grid-template-columns: 1fr;
  }

  .arch-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-header {
    padding: 30px;
  }

  .project-tab-content {
    padding: 30px;
  }

  /* Hero Video Tablet Adjustments */
  .hero-bg-video {
    object-position: 78% center;
  }

  .hero-content {
    max-width: 620px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .section {
    padding: 70px 0;
  }

  .container {
    padding: 0 18px;
  }

  /* Mobile Navigation Drawer */
  .mobile-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(8, 9, 13, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-medium);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 20px 24px 20px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .nav-links.mobile-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  }

  .nav-link {
    padding: 14px 10px;
    font-size: 1rem;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-link.active::after {
    left: 10px;
    right: auto;
    width: 24px;
    bottom: 8px;
  }

  .cmd-trigger-btn .kbd-shortcut {
    display: none;
  }

  .hero-section {
    padding-top: calc(var(--header-height) + 20px);
    min-height: 100svh;
  }

  .hero-bg-video {
    object-position: 68% center;
    filter: brightness(0.8) contrast(1.05);
  }

  .hero-video-gradient {
    background: 
      linear-gradient(180deg, 
        rgba(8, 9, 13, 0.85) 0%, 
        rgba(8, 9, 13, 0.72) 45%, 
        rgba(8, 9, 13, 0.97) 100%),
      linear-gradient(90deg, 
        rgba(8, 9, 13, 0.92) 0%, 
        rgba(8, 9, 13, 0.6) 100%);
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-headline {
    font-size: 1.15rem;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .problem-solving-grid {
    grid-template-columns: 1fr;
  }

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

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

  .metrics-summary-grid {
    grid-template-columns: 1fr;
  }

  .project-header {
    padding: 24px 20px;
  }

  .project-tab-content {
    padding: 24px 20px;
  }

  .project-tabs-nav {
    padding: 0 20px;
  }

  .postpilot-dashboard,
  .stegolab-dashboard {
    padding: 18px;
  }

  .modal-dialog {
    max-height: 90vh;
  }

  .resume-paper {
    padding: 20px 14px;
    font-size: 0.8125rem;
  }

  .resume-name {
    font-size: 1.4rem;
  }

  .resume-entry-header,
  .resume-entry-sub {
    flex-direction: column;
    gap: 2px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .hero-bg-video {
    object-position: 62% center;
  }

  .hero-socials {
    flex-wrap: wrap;
  }

  .social-link {
    flex: 1 1 45%;
    justify-content: center;
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .hero-bg-video {
    animation: none !important;
  }
}