/* ===== MOBILE FIRST RESPONSIVE DESIGN ===== */

/* Mobile (320px - 575px) */
@media (max-width: 575px) {
  .header {
    padding: var(--spacing-md) 0;
  }

  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .logo {
    font-size: var(--font-size-lg);
  }

  .nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .search-container {
    width: 100%;
    max-width: none;
  }

  .search-input {
    font-size: 16px; /* Prevents zoom on mobile */
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }

  h3 {
    font-size: var(--font-size-lg);
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--grid-gap-mobile);
    padding: var(--spacing-lg) var(--container-padding-mobile);
  }

  .category-filter {
    padding: var(--spacing-md) var(--container-padding-mobile);
  }

  .category-list {
    gap: var(--spacing-xs);
  }

  .category-link {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .btn {
    width: 100%;
  }

  .video-card-title {
    font-size: var(--font-size-xs);
  }
}

/* Tablet (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
  .header {
    padding: var(--spacing-md) 0;
  }

  .header-content {
    gap: var(--spacing-md);
  }

  .logo {
    font-size: var(--font-size-xl);
  }

  .search-container {
    max-width: 250px;
  }

  .video-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--grid-gap-mobile);
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }

  .category-filter {
    padding: var(--spacing-lg) var(--container-padding-tablet);
  }

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

/* Small Desktop (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  .video-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--grid-gap-tablet);
  }

  .category-list {
    gap: var(--spacing-md);
  }

  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .header-content {
    padding: 0 var(--container-padding-tablet);
  }
}

/* Medium Desktop (1024px - 1399px) */
@media (min-width: 1024px) and (max-width: 1399px) {
  .video-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: var(--grid-gap-desktop);
  }

  .header-content {
    padding: 0 var(--container-padding-desktop);
  }

  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
  .video-grid {
    grid-template-columns: repeat(7, 1fr);
    gap: var(--grid-gap-desktop);
  }

  .header-content {
    padding: 0 var(--container-padding-desktop);
  }

  .footer-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ===== TOUCH DEVICE OPTIMIZATIONS ===== */

@media (hover: none) and (pointer: coarse) {
  .video-card-overlay {
    opacity: 1;
  }

  .nav-link:active {
    background-color: rgba(255, 255, 255, 0.2);
  }

  .category-link:active {
    background-color: var(--color-primary);
  }

  .btn:active {
    transform: scale(0.98);
  }
}

/* ===== LANDSCAPE MODE ===== */

@media (max-height: 500px) and (orientation: landscape) {
  .header {
    padding: var(--spacing-sm) 0;
  }

  h1 {
    font-size: var(--font-size-xl);
  }

  .video-grid {
    gap: var(--grid-gap-mobile);
  }
}

/* ===== RETINA / HIGH DPI DISPLAYS ===== */

@media (min-resolution: 2dppx) {
  img {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* ===== DARK MODE (if system preference exists) ===== */

@media (prefers-color-scheme: dark) {
  /* Already using dark theme by default */
}

/* ===== REDUCED MOTION ===== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ===== PRINT STYLES ===== */

@media print {
  .header,
  .footer,
  .category-filter,
  .search-container,
  .btn {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }

  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .video-card {
    break-inside: avoid;
  }
}