/* ============================================
   Responsive CSS for S.J. Barratt Limited Website
   ============================================ */

/* ============================================
   Large Tablets & Small Desktops (1024px and down)
   ============================================ */

@media screen and (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .contact-grid {
        gap: var(--spacing-2xl);
    }
}

/* ============================================
   Tablets (768px and down)
   ============================================ */

@media screen and (max-width: 768px) {
    /* Typography adjustments */
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-header p {
        font-size: var(--font-size-base);
    }
    
    /* Header adjustments */
    .header-top {
        padding: var(--spacing-xs) 0;
    }
    
    .header-contact {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .header-contact span {
        margin-right: 0;
        font-size: var(--font-size-xs);
    }
    
    .navbar .container {
        position: relative;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: left var(--transition-base);
        z-index: 1001;
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: var(--spacing-lg) 0;
    }
    
    .nav-link {
        font-size: var(--font-size-lg);
        font-weight: 600;
    }
    
    .hamburger {
        display: flex;
        z-index: 1002;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .cta-btn {
        margin-left: 0;
        margin-right: var(--spacing-md);
    }
    
    /* Hero section */
    .hero {
        min-height: 80vh;
        padding-top: 120px;
    }
    
    .hero-content {
        padding: 0 var(--spacing-md);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-features {
        gap: var(--spacing-lg);
    }
    
    /* Services section */
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .service-card {
        padding: var(--spacing-xl);
    }
    
    /* Gallery section */
    .gallery-filters {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        width: 200px;
        text-align: center;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-md);
    }
    
    /* Projects section */
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .project-details {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    /* Testimonials section */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    /* Contact section */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-item {
        gap: var(--spacing-md);
    }
    
    .contact-form {
        padding: var(--spacing-xl);
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--spacing-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    /* Modal */
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
    
    .modal-content img {
        height: 250px;
    }
    
    .modal-info {
        padding: var(--spacing-lg);
    }
    
    .modal-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* ============================================
   Mobile Phones (480px and down)
   ============================================ */

@media screen and (max-width: 480px) {
    /* Container and spacing */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    section {
        padding: var(--spacing-2xl) 0;
    }
    
    /* Typography */
    .hero-title {
        font-size: var(--font-size-2xl);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .section-header {
        margin-bottom: var(--spacing-2xl);
    }
    
    /* Header */
    .header-top .container {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .nav-brand h1 {
        font-size: var(--font-size-lg);
    }
    
    .nav-brand .tagline {
        font-size: var(--font-size-xs);
    }
    
    /* Hero */
    .hero {
        min-height: 70vh;
        padding-top: 140px;
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    /* Buttons */
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .btn-lg {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }
    
    /* Services */
    .service-card {
        padding: var(--spacing-lg);
    }
    
    .service-icon {
        width: 50px;
        height: 50px;
        margin-bottom: var(--spacing-md);
    }
    
    .service-icon i {
        font-size: var(--font-size-xl);
    }
    
    /* Gallery */
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .gallery-item {
        height: 200px;
    }
    
    .gallery-item img {
        height: 200px;
    }
    
    .gallery-filters {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        width: 150px;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    /* Upload section */
    .upload-section {
        padding: var(--spacing-lg);
        margin-top: var(--spacing-lg);
    }
    
    .upload-form {
        gap: var(--spacing-md);
    }
    
    /* Projects */
    .project-content {
        padding: var(--spacing-lg);
    }
    
    .project-image {
        height: 200px;
    }
    
    /* Testimonials */
    .testimonial-card {
        padding: var(--spacing-lg);
    }
    
    .testimonial-author {
        flex-direction: column;
        align-items: start;
        gap: var(--spacing-sm);
    }
    
    /* Contact */
    .contact-item {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .contact-item i {
        font-size: var(--font-size-2xl);
        margin: 0;
    }
    
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    /* Footer */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-section ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* Modal */
    .modal-content {
        margin: 15% auto;
        width: 98%;
    }
    
    .modal-content img {
        height: 200px;
    }
    
    .modal-info {
        padding: var(--spacing-md);
    }
    
    .close {
        top: 10px;
        right: 15px;
        font-size: 28px;
        width: 35px;
        height: 35px;
    }
}

/* ============================================
   Small Mobile Phones (360px and down)
   ============================================ */

@media screen and (max-width: 360px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-sm);
    }
    
    .service-card,
    .project-content,
    .testimonial-card,
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    .filter-btn {
        width: 120px;
        padding: var(--spacing-xs);
        font-size: var(--font-size-xs);
    }
    
    .modal-content {
        margin: 20% auto;
    }
    
    .modal-content img {
        height: 150px;
    }
}

/* ============================================
   High DPI / Retina Displays
   ============================================ */

@media screen and (-webkit-min-device-pixel-ratio: 2),
       screen and (min-resolution: 192dpi) {
    /* Ensure crisp images on high DPI displays */
    .gallery-item img,
    .project-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .header,
    .hero,
    .footer,
    .modal,
    .upload-section,
    .hamburger {
        display: none !important;
    }
    
    .container {
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    
    section {
        page-break-inside: avoid;
        padding: 20px 0 !important;
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
    
    .service-card,
    .project-card,
    .testimonial-card {
        border: 1px solid #ddd;
        margin-bottom: 20px;
        page-break-inside: avoid;
    }
}

/* ============================================
   Dark Mode Support (Optional)
   ============================================ */

@media (prefers-color-scheme: dark) {
    /* Users who prefer dark mode can uncomment this section */
    /*
    :root {
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-light: #a0aec0;
        --bg-primary: #1a202c;
        --bg-secondary: #2d3748;
        --bg-dark: #0a0a0a;
        --border-color: #4a5568;
    }
    
    .service-card,
    .project-card,
    .testimonial-card,
    .contact-form {
        background: var(--bg-secondary);
        color: var(--text-primary);
    }
    */
}

/* ============================================
   Accessibility Improvements
   ============================================ */

/* Focus styles for keyboard navigation */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 9999;
    transition: top var(--transition-fast);
}

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

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .hero-bg {
        background-attachment: scroll;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border-width: 3px;
    }
    
    .service-card,
    .project-card,
    .testimonial-card {
        border: 2px solid var(--text-primary);
    }
}

/* ============================================
   Hover Effects for Touch Devices
   ============================================ */

@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .service-card:hover,
    .project-card:hover,
    .gallery-item:hover {
        transform: none;
        box-shadow: var(--shadow-md);
    }
    
    .gallery-overlay {
        opacity: 1;
        background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 70%);
    }
    
    .btn:hover {
        transform: none;
    }
}

/* ============================================
   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(--primary-color);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Custom Scrollbar (Webkit browsers)
   ============================================ */

::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}