/**
 * PetsLover24 Responsive Stylesheet
 * 
 * Supports all devices: Desktop, Laptop, Tablet, Android, iPhone (320px to 1440px+)
 * Includes mobile filter drawer, touch-friendly horizontal carousels,
 * and adaptive layouts without horizontal overflow.
 */

/* ==================== DESKTOP DEFAULTS ==================== */
.mobile-only-nav-group {
  display: none;
}
.sidebar-mobile-header {
  display: none;
}
.sidebar-backdrop {
  display: none;
}

/* ==================== LAPTOP & LARGE TABLET (<= 1200px) ==================== */
@media (max-width: 1200px) {
  body {
    padding: 16px;
  }
  .app-body {
    padding: 20px;
    gap: 20px;
  }
  .hero-row {
    grid-template-columns: 1fr;
  }
  .cookbook-panel {
    display: none !important;
  }
  .nav-pills {
    display: none !important;
  }
  .mobile-menu-toggle {
    display: flex !important;
  }
  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
}

/* ==================== TABLET (<= 992px) ==================== */
@media (max-width: 992px) {
  body {
    padding: 10px;
  }
  .app-window {
    border-radius: 20px;
  }
  .window-chrome {
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
  }
  .app-body {
    padding: 16px;
  }

  /* Left Sidebar converts to Slide-out Drawer */
  .app-sidebar {
    position: fixed;
    top: 0;
    left: -320px;
    width: 300px;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    z-index: 9999;
    box-shadow: 10px 0 30px rgba(0,0,0,0.2);
    transition: left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    background: #FFFFFF;
    padding-top: 16px;
  }
  .app-sidebar.drawer-open {
    left: 0;
  }

  .sidebar-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 14px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
  }
  .sidebar-mobile-close-btn {
    background: #F4F5F8;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-only-nav-group {
    display: block;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px dashed #E5E7EB;
  }
  .mobile-nav-heading {
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
  }
  .mobile-nav-links-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
  }
  .mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 13.5px;
    font-weight: 600;
    color: #374151;
    text-decoration: none;
    transition: all 0.2s;
  }
  .mobile-nav-link:hover {
    background: #EDE9FE;
    color: var(--primary);
  }

  .sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    backdrop-filter: blur(4px);
    z-index: 9998;
  }
  .sidebar-backdrop.active {
    display: block;
  }

  /* Mobile Filter Trigger Button Bar */
  .mobile-filter-trigger-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #FFFFFF;
    border-radius: var(--radius-pill);
    padding: 8px 16px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
  }
  .mobile-filter-btn {
    background: #EDE9FE;
    color: var(--primary);
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 12.5px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
  }

  /* Hero Banner Stack */
  .hero-banner {
    flex-direction: column;
    text-align: center;
    padding: 28px 20px;
  }
  .hero-pills-row {
    justify-content: center;
  }
  .hero-actions {
    display: flex;
    justify-content: center;
  }

  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .calc-layout-grid {
    grid-template-columns: 1fr;
  }
  .trust-badges-grid {
    grid-template-columns: 1fr;
  }
  .newsletter-card {
    flex-direction: column;
    text-align: center;
    padding: 28px 20px;
  }
  .newsletter-input-group {
    max-width: 100%;
  }
}

/* ==================== SMARTPHONE (<= 576px) ==================== */
@media (max-width: 576px) {
  body {
    padding: 0;
  }
  .app-window {
    border-radius: 0;
    border: none;
    box-shadow: none;
  }
  .window-chrome {
    display: none; /* Hide macOS chrome bar on mobile for native app feeling */
  }
  .app-header {
    padding: 10px 14px;
  }
  .brand-logo img {
    height: 34px;
  }
  .user-profile-pill {
    display: none;
  }
  .app-body {
    padding: 12px;
  }

  .hero-banner {
    padding: 22px 16px;
    border-radius: 20px;
  }
  .hero-mascot-img {
    width: 140px;
  }
  .hero-title {
    font-size: 21px;
  }
  .hero-subtitle {
    font-size: 13.5px;
  }
  .hero-pill {
    font-size: 11.5px;
    padding: 4px 10px;
  }

  .main-search-bar-wrap {
    padding: 8px 14px;
  }
  .main-search-bar-wrap input {
    font-size: 13.5px;
  }
  .search-submit-pill-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .pet-card {
    width: 260px;
  }
  .card-img-wrap {
    height: 155px;
  }
  .card-content {
    padding: 12px 14px;
  }
  .card-title {
    font-size: 14.5px;
  }

  .checklist-items-grid {
    grid-template-columns: 1fr;
  }
  .breed-compare-selectors {
    grid-template-columns: 1fr;
  }

  .app-footer {
    padding: 30px 18px 20px 18px;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-bottom-bar {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .standard-page-card, .single-article-card {
    padding: 22px 16px;
    border-radius: 18px;
  }
  .article-h1-title {
    font-size: 23px;
  }
  .article-meta-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .article-toc ul {
    grid-template-columns: 1fr;
  }
  .article-author-card {
    flex-direction: column;
    text-align: center;
  }
  .favorites-drawer {
    width: 100%;
    right: -100%;
  }
}