/* ==========================================================================
   Responsive CSS - Mobile-first responsive styles
   ========================================================================== */

/* ==========================================================================
   Breakpoint System
   ========================================================================== */

/* Base styles (mobile-first) */
:root {
  --container-padding: var(--spacing-4);
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: var(--breakpoint-sm)) {
  :root {
    --container-padding: var(--spacing-5);
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: var(--breakpoint-md)) {
  :root {
    --container-padding: var(--spacing-6);
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: var(--breakpoint-lg)) {
  :root {
    --container-padding: var(--spacing-8);
  }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: var(--breakpoint-xl)) {
  :root {
    --container-padding: var(--spacing-10);
  }
}

/* ==========================================================================
   Component Responsiveness
   ========================================================================== */

/* Navigation Mobile Styles */
@media (max-width: calc(var(--breakpoint-md) - 1px)) {
  .nav-mobile {
    display: block;
  }
  
  .nav-desktop {
    display: none;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--color-white);
    padding: var(--spacing-4);
    transition: left 0.3s ease-in-out;
    z-index: 1000;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
  }
  
  .nav-menu.active {
    left: 0;
  }
}

/* Card Grid Adjustments */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4);
}

@media (min-width: var(--breakpoint-sm)) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: var(--breakpoint-lg)) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Typography Scaling */
@media (min-width: var(--breakpoint-md)) {
  h1 { font-size: calc(var(--font-size-4xl) * 1.2); }
  h2 { font-size: calc(var(--font-size-3xl) * 1.2); }
  h3 { font-size: calc(var(--font-size-2xl) * 1.1); }
}

/* Image Scaling */
.responsive-img {
  max-width: 100%;
  height: auto;
}

.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Button Size Adjustments */
@media (max-width: calc(var(--breakpoint-sm) - 1px)) {
  .btn {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
  }
}

/* ==========================================================================
   Layout Responsiveness
   ========================================================================== */

/* Container Width Adjustments */
.container-fluid {
  width: 100%;
  padding-right: var(--container-padding);
  padding-left: var(--container-padding);
  margin-right: auto;
  margin-left: auto;
}

/* Grid System Modifications */
.grid {
  display: grid;
  gap: var(--spacing-4);
}

.grid-2 { grid-template-columns: repeat(1, 1fr); }
.grid-3 { grid-template-columns: repeat(1, 1fr); }
.grid-4 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: var(--breakpoint-md)) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: var(--breakpoint-lg)) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Flexbox Responsive Patterns */
.flex-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

@media (max-width: calc(var(--breakpoint-md) - 1px)) {
  .flex-container {
    flex-direction: column;
  }
}

/* Stack Order Changes */
@media (max-width: calc(var(--breakpoint-md) - 1px)) {
  .stack-reverse {
    flex-direction: column-reverse;
  }
}

/* Spacing Adjustments */
@media (max-width: calc(var(--breakpoint-sm) - 1px)) {
  .spacing-mobile {
    margin-bottom: var(--spacing-4);
  }
}

/* ==========================================================================
   Visibility Utilities
   ========================================================================== */

/* Show/Hide Classes */
.hide-xs { display: none !important; }
.show-xs { display: block !important; }
.hide-sm { display: block !important; }
.show-sm { display: none !important; }
.hide-md { display: block !important; }
.show-md { display: none !important; }
.hide-lg { display: block !important; }
.show-lg { display: none !important; }
.hide-xl { display: block !important; }
.show-xl { display: none !important; }

@media (min-width: var(--breakpoint-sm)) {
  .hide-sm { display: none !important; }
  .show-sm { display: block !important; }
}

@media (min-width: var(--breakpoint-md)) {
  .hide-md { display: none !important; }
  .show-md { display: block !important; }
}

@media (min-width: var(--breakpoint-lg)) {
  .hide-lg { display: none !important; }
  .show-lg { display: block !important; }
}

@media (min-width: var(--breakpoint-xl)) {
  .hide-xl { display: none !important; }
  .show-xl { display: block !important; }
}

/* Display Modifications */
@media (max-width: calc(var(--breakpoint-sm) - 1px)) {
  .d-xs-none { display: none !important; }
  .d-xs-block { display: block !important; }
  .d-xs-flex { display: flex !important; }
  .d-xs-inline { display: inline !important; }
  .d-xs-inline-block { display: inline-block !important; }
}

/* Order Adjustments */
@media (min-width: var(--breakpoint-md)) {
  .order-md-1 { order: 1 !important; }
  .order-md-2 { order: 2 !important; }
  .order-md-3 { order: 3 !important; }
}

/* Print Styles */
@media print {
  .no-print { display: none !important; }
  
  a[href]:after {
    content: " (" attr(href) ")";
  }
  
  img {
    max-width: 100% !important;
    page-break-inside: avoid;
  }
  
  pre, blockquote {
    page-break-inside: avoid;
  }
  
  thead {
    display: table-header-group;
  }
  
  tr, img {
    page-break-inside: avoid;
  }
  
  p, h2, h3 {
    orphans: 3;
    widows: 3;
  }
  
  h2, h3 {
    page-break-after: avoid;
  }
}