/* CarReseller - Responsive CSS */

/* Mobile First Approach */
/* Base styles are mobile-first, then we add larger screen styles */

/* Small Mobile (320px and up) */
@media (min-width: 320px) {
    .container {
        padding: 0 var(--spacing-3);
    }
    
    .hero h1 {
        font-size: var(--font-size-2xl);
    }
    
    .hero p {
        font-size: var(--font-size-base);
    }
    
    .search-form {
        grid-template-columns: 1fr;
        padding: var(--spacing-6);
    }
    
    .cars-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }
}

/* Medium Mobile (480px and up) */
@media (min-width: 480px) {
    .hero h1 {
        font-size: var(--font-size-3xl);
    }
    
    .hero p {
        font-size: var(--font-size-lg);
    }
    
    .search-form {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Mobile (640px and up) */
@media (min-width: 640px) {
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    .search-form {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cars-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet (768px and up) */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .hero h1 {
        font-size: var(--font-size-4xl);
    }
    
    .search-form {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cars-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Show desktop navigation */
    .nav-menu {
        display: flex !important;
    }
    
    .mobile-menu-toggle {
        display: none !important;
    }
}

/* Small Desktop (1024px and up) */
@media (min-width: 1024px) {
    .hero h1 {
        font-size: var(--font-size-5xl);
    }
    
    .search-form {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .cars-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Large Desktop (1280px and up) */
@media (min-width: 1280px) {
    .container {
        max-width: 1200px;
    }
    
    .container-wide {
        max-width: 1400px;
    }
    
    .cars-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Extra Large Desktop (1536px and up) */
@media (min-width: 1536px) {
    .container {
        max-width: 1400px;
    }
    
    .container-wide {
        max-width: 1600px;
    }
    
    .cars-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Landscape Orientation */
@media (orientation: landscape) and (max-height: 500px) {
    .hero {
        padding: var(--spacing-12) 0;
    }
    
    .hero h1 {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-4);
    }
    
    .hero p {
        margin-bottom: var(--spacing-6);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .car-image {
        background-image: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .search-section,
    .nav-actions {
        display: none;
    }
    
    .hero {
        background: none !important;
        color: var(--gray-900) !important;
        padding: var(--spacing-8) 0;
    }
    
    .car-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .car-card:hover,
    .category-card:hover {
        transform: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --white: #1f2937;
        --gray-50: #111827;
        --gray-100: #1f2937;
        --gray-200: #374151;
        --gray-300: #4b5563;
        --gray-400: #6b7280;
        --gray-500: #9ca3af;
        --gray-600: #d1d5db;
        --gray-700: #e5e7eb;
        --gray-800: #f3f4f6;
        --gray-900: #f9fafb;
    }
    
    body {
        background-color: var(--gray-50);
        color: var(--gray-800);
    }
    
    .header {
        background-color: var(--white);
        border-bottom-color: var(--gray-200);
    }
    
    .car-card,
    .category-card {
        background-color: var(--white);
        border-color: var(--gray-200);
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip Link for Screen Readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--gray-300);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Utility Classes for Responsive Design */
.hidden-xs { display: none; }
.hidden-sm { display: none; }
.hidden-md { display: none; }
.hidden-lg { display: none; }
.hidden-xl { display: none; }

.visible-xs { display: block; }
.visible-sm { display: block; }
.visible-md { display: block; }
.visible-lg { display: block; }
.visible-xl { display: block; }

@media (min-width: 640px) {
    .hidden-sm { display: block; }
    .visible-sm { display: none; }
}

@media (min-width: 768px) {
    .hidden-md { display: block; }
    .visible-md { display: none; }
}

@media (min-width: 1024px) {
    .hidden-lg { display: block; }
    .visible-lg { display: none; }
}

@media (min-width: 1280px) {
    .hidden-xl { display: block; }
    .visible-xl { display: none; }
}

/* Responsive Text Sizes */
.text-responsive-xs { font-size: var(--font-size-xs); }
.text-responsive-sm { font-size: var(--font-size-sm); }
.text-responsive-base { font-size: var(--font-size-base); }
.text-responsive-lg { font-size: var(--font-size-lg); }
.text-responsive-xl { font-size: var(--font-size-xl); }

@media (min-width: 768px) {
    .text-responsive-xs { font-size: var(--font-size-sm); }
    .text-responsive-sm { font-size: var(--font-size-base); }
    .text-responsive-base { font-size: var(--font-size-lg); }
    .text-responsive-lg { font-size: var(--font-size-xl); }
    .text-responsive-xl { font-size: var(--font-size-2xl); }
}

@media (min-width: 1024px) {
    .text-responsive-xs { font-size: var(--font-size-sm); }
    .text-responsive-sm { font-size: var(--font-size-base); }
    .text-responsive-base { font-size: var(--font-size-lg); }
    .text-responsive-lg { font-size: var(--font-size-xl); }
    .text-responsive-xl { font-size: var(--font-size-2xl); }
}

/* Responsive Filter Styles */
@media (max-width: 768px) {
    .filters-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }
    
    .filter-btn {
        width: 100%;
        justify-content: center;
    }
    
    .active-filters {
        padding: var(--spacing-3);
    }
    
    .filter-tag {
        display: block;
        margin-bottom: var(--spacing-2);
        text-align: center;
    }
    
    .filters-actions {
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-3);
    }
    
    .help-info {
        padding: var(--spacing-4);
    }
    
    .contact-methods {
        gap: var(--spacing-2);
    }
    
    /* Contact Page Mobile Optimizations */
    .contact-content {
        padding: var(--spacing-8) 0;
    }
    
    .contact-form,
    .contact-info {
        padding: var(--spacing-6);
    }
    
    .contact-form h2,
    .contact-info h2 {
        font-size: var(--font-size-xl);
        text-align: center;
    }
    
    .contact-method {
        padding: var(--spacing-3);
    }
    
    .contact-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .social-icons {
        gap: var(--spacing-3);
    }
    
    .social-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .faq-item {
        padding: var(--spacing-4);
    }
}

/* ============================================================
   MOBILE-SPECIFIC FIXES
   ============================================================ */

/* iOS Safari: background-attachment:fixed is broken on mobile —
   backgrounds disappear or freeze. Force scroll on all mobile. */
@media (max-width: 768px) {
    * {
        background-attachment: scroll !important;
    }
}

/* Top bar: hide long address on small screens, show phone only */
@media (max-width: 640px) {
    .top-bar-address {
        display: none !important;
    }
}

/* Hero: reduce the car image panel height when stacked */
@media (max-width: 767px) {
    .hero-car-image {
        height: 260px !important;
    }

    /* Featured cars: allow smaller cards on mobile */
    .featured-cars .cars-grid {
        grid-template-columns: 1fr !important;
    }

    /* Page header sections: reduce padding and font sizes */
    .page-header h1 {
        font-size: 1.75rem !important;
    }

    .page-header p {
        font-size: 1rem !important;
    }

    /* Car listing grid: single column on mobile */
    .cars-listing-section .cars-grid {
        grid-template-columns: 1fr !important;
    }

    /* Browse banner: always stack vertically */
    .browse-banner {
        flex-direction: column !important;
        text-align: center !important;
    }

    .browse-banner > div:first-child {
        justify-content: center !important;
        flex-wrap: wrap !important;
        gap: 1.25rem !important;
    }

    /* Admin form grids */
    .admin-form-grid {
        grid-template-columns: 1fr !important;
    }
}