/* ============================================
   Mobile UI/UX Enhancements
   E-Libraro Mobile Optimizations
   ============================================ */

/* Improved Touch Targets for Mobile */
@media (max-width: 767px) {

    /* Minimum touch target size 44x44px (Apple HIG standard) */
    .btn,
    .nav-item,
    .book-card,
    .user-menu-btn,
    .book-card,
    .user-menu-btn,
    .mobile-search-icon,
    .mobile-notification-icon,
    .page-link,
    .table-action-btn {
        min-height: 44px;
        min-width: 44px;
    }

    /* Better spacing for mobile */
    .section {
        padding: var(--spacing-md) 0;
    }

    /* Optimized hero section for mobile */
    .hero-section {
        padding: var(--spacing-lg) 0;
    }

    .hero-content h1 {
        font-size: 1.75rem;
        line-height: 1.2;
        margin-bottom: 0.75rem;
    }

    .hero-content p {
        font-size: 1rem;
        line-height: 1.5;
    }

    /* Better book grid spacing on mobile */
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    /* Improved book card for mobile */
    .book-card {
        border-radius: var(--radius-md);
    }

    .book-info {
        padding: 0.75rem;
    }

    .book-title {
        font-size: 0.9rem;
        line-height: 1.3;
    }

    .book-author {
        font-size: 0.8rem;
    }

    .book-meta {
        font-size: 0.75rem;
    }

    /* Better form inputs on mobile */
    .form-control,
    .search-input,
    .filter-select,
    select,
    textarea {
        font-size: 16px !important;
        /* Prevents zoom on iOS */
        padding: 0.875rem 1rem;
    }

    /* Improved buttons on mobile */
    .btn {
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
        font-weight: 600;
    }

    .btn-lg {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }

    /* Better section headers on mobile */
    .section-header h2 {
        font-size: 1.25rem;
    }

    /* Improved stats cards on mobile */
    .stat-card {
        padding: var(--spacing-sm);
    }

    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .stat-details h3 {
        font-size: 1.5rem;
    }

    .stat-details p {
        font-size: 0.85rem;
    }

    /* Better table responsiveness */
    .books-table,
    .admin-table {
        font-size: 0.85rem;
    }

    .books-table th,
    .books-table td,
    .admin-table th,
    .admin-table td {
        padding: 0.5rem 0.25rem;
    }

    /* Improved pagination on mobile */
    .page-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }

    .page-numbers {
        gap: 0.25rem;
    }

    /* Better category cards on mobile */
    .category-card {
        padding: var(--spacing-sm);
    }

    .category-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .category-info h3 {
        font-size: 1rem;
    }

    .category-info p {
        font-size: 0.85rem;
    }

    /* Improved auth pages on mobile */
    .auth-page {
        padding: var(--spacing-sm);
    }

    .auth-card {
        padding: var(--spacing-md);
    }

    .auth-header h2 {
        font-size: 1.5rem;
    }

    .auth-logo {
        font-size: 1.25rem;
    }
}

/* Extra small devices (phones in portrait, < 375px) */
@media (max-width: 375px) {

    /* Single column grid for very small screens */
    /* Better book grid spacing on mobile */
    .books-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.75rem;
    }

    /* Larger book cards on small screens */
    .book-card {
        max-width: 100%;
    }

    /* Better hero stats layout */
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .stat-item {
        padding: 0.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    /* Compact bottom nav */
    .nav-item {
        padding: 0.5rem 0.75rem;
        min-width: 50px;
    }

    .nav-item span {
        font-size: 0.65rem;
    }

    .nav-item i {
        font-size: 1.25rem;
    }

    /* Compact top bar */
    .logo {
        font-size: 1.1rem;
    }

    .logo i {
        font-size: 1.25rem;
    }
}

/* Landscape mode optimizations */
@media (max-width: 767px) and (orientation: landscape) {

    /* Reduce hero section height in landscape */
    .hero-section {
        padding: var(--spacing-md) 0;
    }

    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 0.9rem;
        margin-bottom: var(--spacing-sm);
    }

    .hero-stats {
        gap: var(--spacing-sm);
    }

    /* Compact bottom nav in landscape */
    .bottom-nav {
        height: 56px;
        padding: 0.25rem;
    }

    body {
        padding-bottom: 56px;
    }

    .nav-item {
        padding: 0.25rem 0.75rem;
    }

    .nav-item:nth-child(2) {
        transform: translateY(-4px);
        padding: 0.5rem 1rem;
    }

    /* Reduce section padding in landscape */
    .section {
        padding: var(--spacing-sm) 0;
    }
}

/* Active/Focus states for better mobile feedback */
@media (max-width: 767px) {

    /* Touch feedback */
    .btn:active {
        transform: scale(0.97);
        opacity: 0.9;
    }

    .book-card:active {
        transform: translateY(-4px) scale(0.98);
        box-shadow: var(--shadow-md);
    }

    .nav-item:active {
        background: var(--bg-color);
        opacity: 0.8;
    }

    .page-link:active {
        transform: scale(0.95);
    }

    .category-card:active {
        transform: translateY(-2px) scale(0.98);
    }

    /* Remove hover effects on mobile (use active instead) */
    .book-card:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
    }

    .btn:hover {
        transform: none;
    }

    /* Better focus states for accessibility */
    .form-control:focus,
    .search-input:focus {
        border-width: 3px;
        padding: calc(0.875rem - 1px) calc(1rem - 1px);
    }
}

/* Smooth scrolling for mobile */
@media (max-width: 767px) {
    html {
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
    }

    /* Prevent horizontal scroll */
    body {
        overflow-x: hidden;
        max-width: 100vw;
    }

    /* Prevent zoom on double tap */
    * {
        touch-action: manipulation;
    }
}

/* Better search on mobile */
@media (max-width: 767px) {
    .search-filters {
        padding: var(--spacing-sm);
    }

    .search-filter-form {
        gap: 0.75rem;
        grid-template-columns: 1fr;
    }

    .search-results-count {
        font-size: 0.9rem;
        margin-bottom: var(--spacing-sm);
    }
}

/* Better PDF reader on mobile */
@media (max-width: 767px) {
    .reader-container {
        height: calc(100vh - 140px);
    }

    .reader-header {
        padding: var(--spacing-sm) 0;
    }

    .book-details h1 {
        font-size: 1.25rem;
        line-height: 1.3;
    }

    .book-meta-info {
        font-size: 0.8rem;
        gap: 0.5rem;
    }

    .reader-actions {
        flex-wrap: wrap;
    }

    .reader-actions .btn {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }
}

/* Improved dashboard on mobile */
@media (max-width: 767px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .quick-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .action-btn {
        min-width: 100%;
        width: 100%;
    }

    .dashboard-section {
        padding: var(--spacing-md);
    }
}

/* Better profile page on mobile */
@media (max-width: 767px) {
    .profile-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .profile-card {
        padding: var(--spacing-md);
    }

    .profile-card h2 {
        font-size: 1.1rem;
    }
}

/* Improved upload page on mobile */
@media (max-width: 767px) {
    .upload-card {
        padding: var(--spacing-md);
    }

    .file-label {
        padding: var(--spacing-md);
    }

    .file-label i {
        font-size: 2rem;
    }

    .form-actions {
        flex-direction: column-reverse;
        gap: var(--spacing-sm);
    }

    .form-actions .btn {
        width: 100%;
    }
}

/* Better modal/dialog on mobile */
@media (max-width: 767px) {

    .modal,
    .dialog,
    .alert {
        margin: var(--spacing-sm);
        max-width: calc(100% - 2rem);
    }
}

/* Improved empty states on mobile */
@media (max-width: 767px) {
    .empty-state {
        padding: var(--spacing-lg);
    }

    .empty-state i {
        font-size: 3rem;
    }

    .empty-state h3 {
        font-size: 1.25rem;
    }

    .empty-state p {
        font-size: 0.9rem;
    }
}

/* Safe area insets for notched devices (iPhone X+) */
@supports (padding: max(0px)) {
    body {
        padding-bottom: max(var(--bottom-nav-height), env(safe-area-inset-bottom));
    }

    .bottom-nav {
        padding-bottom: env(safe-area-inset-bottom);
        height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
    }

    .container {
        padding-left: max(0.75rem, env(safe-area-inset-left));
        padding-right: max(0.75rem, env(safe-area-inset-right));
    }
}

/* Reduce motion for accessibility */
@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;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {

    .btn,
    .form-control,
    .book-card,
    .nav-item {
        border: 2px solid currentColor;
    }

    .book-overlay {
        background: rgba(0, 0, 0, 0.9);
    }
}

/* Loading states for mobile */
@media (max-width: 767px) {
    .loading-spinner {
        width: 30px;
        height: 30px;
        border-width: 3px;
    }

    .loading-overlay {
        backdrop-filter: blur(4px);
    }
}

/* Better flash messages on mobile */
@media (max-width: 767px) {
    .flash-message {
        padding: 0.75rem;
        font-size: 0.9rem;
        margin: 0.5rem;
    }
}

/* Improved footer on mobile */
@media (max-width: 767px) {
    .footer {
        padding: var(--spacing-lg) 0 calc(var(--spacing-md) + var(--bottom-nav-height));
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}