/* Mobile First Responsive Design */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .hero-buttons {
        flex-direction: row;
    }
    
    .newsletter-form {
        flex-direction: row;
    }
    
    .cta-buttons {
        flex-direction: row;
    }
    
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .header-content {
        height: 5rem;
    }
    
    .logo-text {
        display: block;
    }
    
    .search-container {
        display: block;
    }
    
    .user-text,
    .cart-text {
        display: inline;
    }
    
    .mobile-menu-btn {
        display: none;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    .section-header-with-action {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .section-header-with-filters {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-end;
    }
    
    .filters {
        justify-content: flex-end;
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .nav {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-title {
        font-size: var(--font-size-6xl);
    }
    
    .categories-grid {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .books-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .achievements-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .books-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Mobile specific styles */
@media (max-width: 767px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-description {
        font-size: var(--font-size-lg);
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-description {
        font-size: var(--font-size-lg);
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .category-card {
        padding: var(--spacing-md);
    }
    
    .category-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.5rem;
    }
    
    .category-name {
        font-size: var(--font-size-base);
    }
    
    .category-description {
        font-size: var(--font-size-xs);
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .authors-grid {
        grid-template-columns: 1fr;
    }
    
    .author-content {
        flex-direction: column;
        text-align: center;
    }
    
    .author-image {
        align-self: center;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .achievement-card {
        padding: var(--spacing-md);
    }
    
    .achievement-icon {
        width: 3rem;
        height: 3rem;
        font-size: 1.5rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-container {
        padding: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-section {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .legal-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Very small devices (portrait phones, less than 576px) */
@media (max-width: 575px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        height: 3.5rem;
    }
    
    .logo {
        gap: var(--spacing-sm);
    }
    
    .logo-icon {
        width: 2rem;
        height: 2rem;
        font-size: var(--font-size-lg);
    }
    
    .logo-text h1 {
        font-size: var(--font-size-base);
    }
    
    .logo-text p {
        font-size: 0.625rem;
    }
    
    .header-actions {
        gap: var(--spacing-sm);
    }
    
    .language-select {
        padding: var(--spacing-xs) var(--spacing-sm);
        min-width: 3rem;
        font-size: var(--font-size-xs);
    }
    
    .user-btn,
    .cart-btn {
        padding: var(--spacing-xs);
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-description {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .hero-stats {
        gap: var(--spacing-sm);
    }
    
    .stat-number {
        font-size: var(--font-size-xl);
    }
    
    .stat-label {
        font-size: var(--font-size-xs);
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .section-header {
        margin-bottom: var(--spacing-xl);
    }
    
    .section-title {
        font-size: var(--font-size-xl);
    }
    
    .section-description {
        font-size: var(--font-size-base);
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-select {
        min-width: auto;
    }
    
    .book-card {
        margin-bottom: var(--spacing-md);
    }
    
    .book-actions {
        flex-direction: column;
    }
    
    .authors-cta,
    .newsletter,
    .about-cta {
        padding: var(--spacing-xl);
    }
    
    .authors-cta h3,
    .newsletter h3,
    .about-cta h3 {
        font-size: var(--font-size-xl);
    }
    
    .authors-cta p,
    .newsletter p,
    .about-cta p {
        font-size: var(--font-size-base);
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: var(--spacing-sm);
        max-width: calc(100vw - 2rem);
    }
    
    .modal-header,
    .modal-body {
        padding: var(--spacing-md);
    }
}

/* Landscape orientation adjustments */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-image {
        height: 12rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-image,
    .book-image,
    .blog-image,
    .author-image {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-1,
    .floating-2 {
        animation: none;
    }
    
    .book-image,
    .blog-image,
    .hero-image {
        transition: none;
    }
    
    .card:hover {
        transform: none;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .floating-elements,
    .btn,
    .modal {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: black;
        background: white;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .hero,
    .categories,
    .featured-books,
    .authors,
    .blog,
    .about,
    .contact {
        padding: 1rem 0;
        background: white !important;
    }
    
    .card {
        border: 1px solid #ccc;
        box-shadow: none;
        break-inside: avoid;
    }
    
    .section-title {
        font-size: 18pt;
        margin-bottom: 0.5rem;
    }
    
    .section-description {
        font-size: 12pt;
        margin-bottom: 1rem;
    }
    
    .book-image,
    .blog-image,
    .author-image,
    .hero-image {
        max-width: 100%;
        height: auto;
    }
}