/* =============================================================================
   Responsive CSS for £100 Website Business
   Mobile-first responsive design system
   ============================================================================= */

/* Mobile First Base Styles (320px and up) */
/* Base styles are already mobile-first in main.css */

/* Mobile-specific adjustments */
@media (max-width: 479px) {
    .hero-features {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
        font-size: var(--font-size-sm);
    }
    
    .comparison-cell {
        padding: var(--spacing-sm);
        text-align: center;
    }
    
    .comparison-cell:first-child {
        text-align: center;
        font-weight: var(--font-weight-bold);
        background: var(--gray-50);
    }
    
    .process-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .process-step::after {
        display: none;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-lg);
    }
    
    .industry-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .faq-question {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .faq-answer {
        padding: 0 var(--spacing-md);
    }
    
    .faq-answer.active {
        padding: var(--spacing-md);
    }
}

/* Small Mobile Adjustments (480px and up) */
@media (min-width: 480px) {
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .comparison-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
    
    .process-grid {
        grid-template-columns: 1fr;
    }
    
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet Portrait (768px and up) */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-2xl);
    }
    
    /* Typography scaling */
    h1 { font-size: var(--font-size-5xl); }
    h2 { font-size: var(--font-size-4xl); }
    h3 { font-size: var(--font-size-3xl); }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    /* Grid improvements */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-features {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .comparison-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
    
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-step::after {
        display: block;
    }
    
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Section spacing */
    .section {
        padding: var(--spacing-5xl) 0;
    }
    
    /* Form improvements */
    .contact-form {
        padding: var(--spacing-4xl);
    }
    
    /* Card hover effects */
    .feature-card:hover,
    .pricing-card:hover,
    .portfolio-item:hover {
        transform: translateY(-6px);
    }
}

/* Tablet Landscape (1024px and up) */
@media (min-width: 1024px) {
    .container {
        max-width: 1200px;
    }
    
    /* Grid layouts for larger screens */
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .process-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .industry-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Footer layout */
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* Hero improvements */
    .hero {
        padding: calc(var(--spacing-5xl) * 1.5) 0;
    }
    
    .hero-cta {
        gap: var(--spacing-xl);
    }
}

/* Desktop (1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
        padding: 0 var(--spacing-3xl);
    }
    
    /* Larger typography for big screens */
    .hero-title {
        font-size: calc(var(--font-size-5xl) * 1.2);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-2xl);
    }
    
    /* Section spacing */
    .section {
        padding: calc(var(--spacing-5xl) * 1.2) 0;
    }
    
    /* Enhanced grid layouts */
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
        gap: var(--spacing-3xl);
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

/* Mobile-Specific Styles (max-width: 767px) */
@media (max-width: 767px) {
    /* Mobile Typography */
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    /* Mobile Layout Adjustments */
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    /* Single column layouts */
    .features-grid,
    .pricing-grid,
    .testimonials-grid,
    .portfolio-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    /* Mobile form adjustments */
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact-form {
        padding: var(--spacing-2xl);
        margin: 0 var(--spacing-lg);
    }
    
    /* Mobile section spacing */
    .section {
        padding: var(--spacing-4xl) 0;
    }
    
    /* Mobile pricing cards */
    .pricing-card.featured {
        transform: none;
        margin-top: var(--spacing-lg);
    }
    
    /* Mobile footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* Mobile portfolio filters */
    .portfolio-filters {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    /* Mobile cards */
    .feature-card,
    .testimonial-card,
    .portfolio-item {
        margin: 0 var(--spacing-md);
    }
}

/* Small Mobile Phones (max-width: 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    
    /* Smaller typography for very small screens */
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    h4 { font-size: var(--font-size-lg); }
    
    /* Compact spacing */
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .hero {
        padding: var(--spacing-4xl) 0;
    }
    
    /* Single column stats on very small screens */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat-item {
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: var(--font-size-3xl);
    }
    
    /* Compact cards */
    .feature-card,
    .testimonial-card {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-sm);
    }
    
    .contact-form {
        padding: var(--spacing-lg);
        margin: 0 var(--spacing-sm);
    }
    
    /* Smaller buttons */
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .btn-lg {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }
    
    /* Compact icons */
    .feature-icon,
    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
    
    /* Smaller pricing cards */
    .pricing-card {
        padding: var(--spacing-lg);
    }
    
    .price-amount {
        font-size: var(--font-size-4xl);
    }
}

/* Print Styles */
@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    .site-footer,
    .btn,
    .portfolio-filters {
        display: none !important;
    }
    
    .container {
        max-width: none !important;
        padding: 0 !important;
    }
    
    .section {
        padding: 1rem 0 !important;
    }
    
    .hero {
        background: none !important;
        color: black !important;
        padding: 1rem 0 !important;
    }
    
    .hero-title,
    .hero-subtitle {
        color: black !important;
    }
    
    .card,
    .feature-card,
    .testimonial-card,
    .pricing-card {
        border: 1px solid #ccc !important;
        break-inside: avoid;
        margin-bottom: 1rem !important;
    }
    
    a {
        text-decoration: underline !important;
    }
    
    a[href^="http"]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
    }
}

/* High DPI / Retina Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Crisp icons and images for high DPI screens */
    .feature-icon,
    .contact-icon,
    .author-avatar {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Landscape Orientation (Mobile) */
@media (max-width: 767px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-3xl) 0;
    }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
}

/* Accessibility: Reduced Motion */
@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;
    }
    
    .spinner {
        animation: none;
    }
    
    .feature-card:hover,
    .pricing-card:hover,
    .portfolio-item:hover,
    .btn:hover {
        transform: none !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    /* Optional: Add dark mode styles if needed */
    /* This would override the light theme for users who prefer dark mode */
}