/* Responsive Styles */

/* Large Screens (default styles are for large screens) */

/* Medium Screens (Tablets, smaller desktops) */
@media screen and (max-width: 992px) {
    html {
        font-size: 15px;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .book-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    /* Reader Page */
    .reader-container {
        padding: var(--spacing-md);
    }
    
    .reader-settings-panel,
    .bookmarks-panel {
        width: 350px;
    }
}

/* Small Screens (Tablets, large phones) */
@media screen and (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    /* Header Navigation */
    .menu-toggle {
        display: flex;
    }
    
    nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.5s ease;
        z-index: 100;
    }
    
    nav.active {
        max-height: 300px;
        box-shadow: 0 5px 10px var(--shadow-color);
    }
    
    nav ul {
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    nav ul li {
        margin: 0 0 var(--spacing-sm) 0;
    }
    
    nav ul li:last-child {
        margin-bottom: 0;
    }
    
    /* Hero Section */
    .hero-content {
        padding: var(--spacing-lg) 0;
        text-align: center;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    /* Library Page */
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    /* About Page */
    .features-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    /* Reader Page */
    .reader-nav {
        flex-direction: row;
        gap: var(--spacing-sm);
        align-items: center;
    }
    
    .reader-header .menu-toggle {
        display: flex;
    }
    
    .reader-nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.5s ease;
        z-index: 100;
    }
    
    .reader-nav-menu.active {
        display: block;
        max-height: 300px;
        box-shadow: 0 5px 10px var(--shadow-color);
    }
    
    .reader-nav-menu ul {
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    .reader-nav-menu ul li {
        margin: 0 0 var(--spacing-sm) 0;
    }
    
    .reader-nav-menu ul li:last-child {
        margin-bottom: 0;
    }
    
    /* Dropdown responsive adjustments */
    .settings-dropdown,
    .bookmarks-dropdown {
        width: 280px;
        max-width: 90vw;
        top: 70px;
    }
    
    .reader-controls {
        flex-direction: row;
        gap: var(--spacing-xs);
    }
}



/* Extra Small Screens (Phones) */
@media screen and (max-width: 576px) {
    html {
        font-size: 13px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-content h2 {
        font-size: 1.75rem;
    }
    
    .book-grid {
        grid-template-columns: 1fr;
    }
    
    .book-cover {
        height: 200px;
    }
    
    /* Reader Page */
    .reader-pagination {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .pagination-btn {
        width: 100%;
    }
    
    .setting-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    /* Dropdown adjustments for very small screens */
    .settings-dropdown,
    .bookmarks-dropdown {
        width: 260px;
        max-width: 95vw;
        top: 65px;
    }
    
    .dropdown-content {
        padding: var(--spacing-sm);
    }
    
    /* Auth Page */
    .auth-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        border-radius: 4px;
        margin-bottom: var(--spacing-xs);
    }
    
    .social-buttons {
        flex-direction: column;
    }
    
    .social-buttons button {
        width: 100%;
        margin-bottom: var(--spacing-xs);
    }
}

/* Ensure text readability on very small screens */
@media screen and (max-width: 320px) {
    html {
        font-size: 12px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}