/* Responsive Design */

/* Extra Large Devices (1400px and up) */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
}

/* Large Devices (992px and up) */
@media (min-width: 992px) {
    .about-content {
        padding-left: 40px;
    }
    
    .social-links {
        justify-content: flex-end;
    }
    
    .footer-menu {
        justify-content: flex-end;
    }
}

/* Medium Devices (768px to 991px) */
@media (max-width: 991.98px) {
    /* Navigation */
    .main-nav {
        padding: 10px 0;
    }
    
    .navbar-collapse {
        background: var(--white-color);
        margin-top: 15px;
        padding: 20px;
        border-radius: var(--border-radius-lg);
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-nav .nav-link {
        padding: 12px 0;
        margin: 0;
        border-bottom: 1px solid var(--light-dark);
        border-radius: 0;
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .dropdown-menu {
        position: static;
        float: none;
        width: 100%;
        margin-top: 0;
        background-color: var(--light-color);
        border: none;
        box-shadow: none;
    }
    
    .search-btn {
        margin-left: 0 !important;
        margin-top: 15px;
    }
    
    /* Hero Section */
    .hero-section {
        padding: 140px 0 80px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-search {
        padding: 25px 20px;
        margin-top: 2rem;
    }
    
    .hero-stats {
        margin-top: 3rem;
    }
    
    .stat-card {
        margin-bottom: 20px;
    }
    
    /* About Section */
    .about-content {
        padding-left: 0;
        margin-top: 40px;
    }
    
    /* CTA Buttons */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-cta {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    /* Footer */
    .social-links {
        justify-content: flex-start;
        margin-top: 20px;
    }
    
    .footer-menu {
        justify-content: flex-start;
        margin-top: 15px;
    }
}

/* Small Devices (576px to 767px) */
@media (max-width: 767.98px) {
    /* Typography */
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.5rem; }
    
    .section-title {
        font-size: 2rem;
        text-align: center;
    }
    
    .section-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    /* Header */
    .top-bar {
        display: none;
    }
    
    .logo-img {
        height: 40px;
        margin-right: 10px;
    }
    
    .logo-text h4 {
        font-size: 1.2rem;
    }
    
    .logo-text small {
        font-size: 0.8rem;
    }
    
    /* Hero Section */
    .hero-section {
        padding: 120px 0 60px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-search {
        padding: 20px 15px;
        margin-top: 1.5rem;
    }
    
    .search-tabs .nav-link {
        padding: 8px 15px;
        margin-right: 5px;
        font-size: 0.9rem;
    }
    
    /* Sections */
    .section-padding,
    .features-section,
    .about-section,
    .latest-arrivals,
    .testimonials-section,
    .events-section,
    .cta-section {
        padding: 60px 0;
    }
    
    /* Feature Cards */
    .feature-card {
        padding: 30px 20px;
        margin-bottom: 30px;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    
    .feature-title {
        font-size: 1.3rem;
    }
    
    /* Filter Buttons */
    .filter-buttons {
        margin-bottom: 40px;
    }
    
    .filter-btn {
        padding: 8px 20px;
        font-size: 0.9rem;
        margin: 3px;
    }
    
    /* Book Cards */
    .book-card {
        margin-bottom: 30px;
    }
    
    .book-image img {
        height: 200px;
    }
    
    /* Testimonial Cards */
    .testimonial-card {
        padding: 30px 20px;
        margin-bottom: 30px;
    }
    
    .testimonial-avatar {
        width: 60px;
        height: 60px;
        margin-bottom: 15px;
    }
    
    .testimonial-text {
        font-size: 1rem;
    }
    
    /* Event Cards */
    .event-card {
        margin-bottom: 30px;
    }
    
    .event-date {
        padding: 15px;
    }
    
    .event-day {
        font-size: 1.5rem;
    }
    
    .event-content {
        padding: 20px;
    }
    
    .event-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    /* CTA Section */
    .cta-title {
        font-size: 2rem;
    }
    
    .cta-text {
        font-size: 1.1rem;
    }
    
    /* Footer */
    .main-footer {
        padding: 50px 0 30px;
    }
    
    .footer-widget {
        margin-bottom: 30px;
    }
    
    .widget-title {
        font-size: 1.2rem;
        text-align: center;
    }
    
    .widget-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-desc,
    .footer-contact,
    .footer-links,
    .library-hours {
        text-align: center;
    }
    
    .footer-contact .contact-item {
        justify-content: center;
    }
    
    .social-section {
        padding: 30px 0;
        text-align: center;
    }
    
    .social-content {
        margin-bottom: 20px;
    }
    
    .social-links {
        justify-content: center;
        gap: 10px;
    }
    
    .social-link {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    
    .bottom-footer {
        text-align: center;
    }
    
    .footer-menu {
        justify-content: center;
        gap: 15px;
        margin-top: 15px;
    }
    
    /* Back to Top */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}

/* Extra Small Devices (up to 575px) */
@media (max-width: 575.98px) {
    /* Container */
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    /* Typography */
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    /* Hero Section */
    .hero-section {
        padding: 100px 0 50px;
    }
    
    .hero-search {
        padding: 15px 10px;
    }
    
    .search-tabs .nav-link {
        padding: 6px 10px;
        font-size: 0.8rem;
        margin-right: 3px;
    }
    
    .hero-stats .row > div {
        margin-bottom: 15px;
    }
    
    /* Feature Cards */
    .feature-card {
        padding: 25px 15px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    /* Modal */
    .modal-dialog {
        margin: 10px;
    }
    
    .modal-body {
        padding: 20px 15px;
    }
    
    /* Book Cards */
    .book-image img {
        height: 180px;
    }
    
    .book-content {
        padding: 15px;
    }
    
    /* Testimonial Cards */
    .testimonial-card {
        padding: 25px 15px;
    }
    
    /* Event Cards */
    .event-content {
        padding: 15px;
    }
    
    /* CTA Section */
    .cta-title {
        font-size: 1.8rem;
    }
    
    .cta-text {
        font-size: 1rem;
    }
    
    .btn-cta {
        padding: 12px 25px;
        font-size: 1rem;
    }
    
    /* Footer */
    .main-footer {
        padding: 40px 0 20px;
    }
    
    .footer-logo .logo-img {
        height: 50px;
    }
    
    .library-hours {
        padding: 15px;
    }
    
    .hours-item {
        font-size: 0.9rem;
    }
    
    .social-links {
        gap: 8px;
    }
    
    .social-link {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    .footer-menu {
        flex-direction: column;
        gap: 10px;
    }
}

/* Landscape Phone Orientation */
@media (max-width: 767px) and (orientation: landscape) {
    .hero-section {
        padding: 80px 0 40px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-padding,
    .features-section,
    .about-section,
    .latest-arrivals,
    .testimonials-section,
    .events-section,
    .cta-section {
        padding: 50px 0;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-img {
        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;
        scroll-behavior: auto !important;
    }
    
    .back-to-top:hover {
        transform: none;
    }
    
    .feature-card:hover,
    .book-card:hover,
    .event-card:hover {
        transform: none;
    }
}

/* Print Styles */
@media print {
    .site-header,
    .hero-section,
    .cta-section,
    .site-footer,
    .back-to-top,
    .btn,
    .social-links,
    .search-btn {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        background: white !important;
        color: black !important;
    }
    
    .container {
        max-width: 100% !important;
        padding: 0 !important;
    }
    
    .section-padding {
        padding: 20px 0 !important;
    }
    
    .feature-card,
    .book-card,
    .testimonial-card,
    .event-card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        page-break-inside: avoid;
    }
    
    h1, h2, h3, h4, h5, h6 {
        page-break-after: avoid;
    }
    
    .section-title::after {
        display: none;
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.nav-link:focus,
.dropdown-item:focus,
.social-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Custom Focus Styles */
.navbar-toggler:focus,
.back-to-top:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: none;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--white-color);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--border-radius);
    z-index: 1001;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
    color: var(--white-color);
}

/* Loading States */
.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Error States */
.form-control.is-invalid {
    border-color: var(--error-color);
    box-shadow: 0 0 0 0.2rem rgba(239, 68, 68, 0.25);
}

.form-control.is-valid {
    border-color: var(--success-color);
    box-shadow: 0 0 0 0.2rem rgba(16, 185, 129, 0.25);
}

/* Tooltip Styles */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    background-color: var(--dark-color);
    color: var(--white-color);
    border-radius: var(--border-radius);
    padding: 6px 12px;
    max-width: 200px;
}

/* Badge Styles */
.badge {
    font-size: 0.75em;
    font-weight: 500;
    padding: 0.35em 0.65em;
    border-radius: var(--border-radius);
}

.badge.bg-primary {
    background-color: var(--primary-color) !important;
}

.badge.bg-secondary {
    background-color: var(--secondary-color) !important;
}

.badge.bg-success {
    background-color: var(--success-color) !important;
}

.badge.bg-warning {
    background-color: var(--warning-color) !important;
}

.badge.bg-danger {
    background-color: var(--error-color) !important;
}

/* Alert Styles */
.alert {
    border: none;
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

.alert-primary {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-dark);
    border-left: 4px solid var(--primary-color);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--secondary-dark);
    border-left: 4px solid var(--secondary-color);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--accent-dark);
    border-left: 4px solid var(--accent-color);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    border-left: 4px solid var(--error-color);
}