/* VinFast Việt Hùng Responsive Styles */

/* Large Screens (Desktop) */
@media screen and (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .hero-container {
    gap: var(--spacing-4xl);
  }
  
  .hero-content h1 {
    font-size: var(--font-size-5xl);
  }
  
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .stores-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Medium Screens (Tablet) */
@media screen and (max-width: 1024px) {
  :root {
    --spacing-4xl: 3rem;
    --spacing-3xl: 2.5rem;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .hero-content {
    order: 2;
  }
  
  .hero-image {
    order: 1;
  }
  
  .hero-content h1 {
    font-size: var(--font-size-4xl);
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
  }
  
  .stores-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Small Tablets */
@media screen and (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--white);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--spacing-xl);
    box-shadow: var(--box-shadow-lg);
    transition: left var(--transition-base);
    z-index: 999;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }
  
  .nav-item {
    width: 100%;
  }
  
  .nav-link {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--gray-200);
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .nav-cta {
    display: none;
  }
  
  .hero {
    min-height: 70vh;
    padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
  }
  
  .hero-content h1 {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
  
  .stores-grid {
    grid-template-columns: 1fr;
  }
  
  .store-actions {
    flex-direction: column;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }
}

/* Mobile Devices */
@media screen and (max-width: 480px) {
  :root {
    --spacing-4xl: 2rem;
    --spacing-3xl: 1.5rem;
    --spacing-2xl: 1.25rem;
    --container-max-width: 100%;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-brand {
    gap: var(--spacing-sm);
  }
  
  .nav-logo {
    height: 32px;
  }
  
  .brand-text h1 {
    font-size: var(--font-size-base);
  }
  
  .brand-text p {
    display: none;
  }
  
  .hero {
    min-height: 60vh;
  }
  
  .hero-container {
    gap: var(--spacing-lg);
  }
  
  .hero-content h1 {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-base);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
  
  .hero-cta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .btn-large {
    width: 100%;
    padding: var(--spacing-md);
  }
  
  .section-header {
    margin-bottom: var(--spacing-2xl);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .section-subtitle {
    font-size: var(--font-size-base);
  }
  
  .products,
  .stores {
    padding: var(--spacing-3xl) 0;
  }
  
  .product-card {
    margin-bottom: var(--spacing-lg);
  }
  
  .product-info {
    padding: var(--spacing-lg);
  }
  
  .store-card {
    padding: var(--spacing-lg);
  }
  
  .store-actions .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  .contact {
    padding: var(--spacing-3xl) 0;
  }
  
  .contact-title {
    font-size: var(--font-size-2xl);
  }
  
  .contact-description {
    font-size: var(--font-size-base);
  }
  
  .contact-methods {
    gap: var(--spacing-md);
  }
  
  .contact-method {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }
  
  .footer {
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-brand {
    text-align: center;
  }
  
  .footer-description {
    margin: 0 auto;
  }
}

/* Very Small Mobile Devices */
@media screen and (max-width: 320px) {
  :root {
    --spacing-4xl: 1.5rem;
    --spacing-3xl: 1.25rem;
    --spacing-2xl: 1rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .nav-brand {
    gap: var(--spacing-xs);
  }
  
  .hero-content h1 {
    font-size: var(--font-size-xl);
  }
  
  .section-title {
    font-size: var(--font-size-xl);
  }
  
  .product-card,
  .store-card {
    margin-bottom: var(--spacing-md);
  }
  
  .btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
  }
  
  .btn-large {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
}

/* Landscape Orientation for Mobile */
@media screen and (max-height: 600px) and (orientation: landscape) {
  .hero {
    min-height: 100vh;
    padding-top: var(--header-height);
  }
  
  .hero-container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  
  .hero-content {
    order: 1;
  }
  
  .hero-image {
    order: 2;
  }
}

/* High DPI Displays */
@media screen and (-webkit-min-device-pixel-ratio: 2), screen and (min-resolution: 192dpi) {
  .nav-logo,
  .footer-logo img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .hero-bike,
  .product-card,
  .store-card {
    transform: none !important;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --white: #1a1a1a;
    --black: #ffffff;
    --bg-light: #2d2d2d;
    --text-dark: #ffffff;
    --text-light: #cccccc;
    --gray-100: #2d2d2d;
    --gray-200: #3d3d3d;
    --gray-300: #4d4d4d;
  }
  
  .header {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-300);
  }
  
  .product-card,
  .store-card {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-300);
  }
  
  .nav-menu {
    background-color: var(--white);
  }
}

/* Print Styles for Mobile */
@media print {
  .nav-toggle,
  .hero-cta,
  .btn,
  .store-actions {
    display: none !important;
  }
  
  .hero-container {
    grid-template-columns: 1fr;
  }
  
  .products-grid,
  .stores-grid {
    grid-template-columns: 1fr;
  }
  
  .contact {
    background-color: transparent !important;
    color: var(--text-dark) !important;
  }
}

/* Focus Styles for Better Accessibility */
@media screen {
  .btn:focus,
  .nav-link:focus,
  .store-phone:focus {
    outline: 2px solid var(--accent-pink);
    outline-offset: 2px;
  }
  
  .nav-toggle:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 4px;
  }
}

/* Hover Effects for Non-Touch Devices */
@media (hover: hover) and (pointer: fine) {
  .product-card:hover .product-overlay {
    opacity: 1;
  }
  
  .product-card:hover {
    transform: translateY(-8px);
  }
  
  .store-card:hover {
    transform: translateY(-4px);
  }
  
  .btn:hover {
    transform: translateY(-2px);
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  .store-phone {
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  
  .product-overlay {
    opacity: 0.8;
  }
  
  .product-card,
  .store-card {
    transform: none;
  }
}