/* Reset and base styles */
:root {
    --primary-color: #0056b3;
    --secondary-color: #003366;
    --accent-color: #00a0e9;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --text-color: #333;
    --text-light: #6c757d;
    --white: #ffffff;
    --border-radius: 4px;
    --box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn:hover {
    background-color: var(--secondary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-size: 36px;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.section-title p {
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* Header */
.header {
    background-color: var(--white);
    box-shadow: var(--box-shadow);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    padding: 15px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--secondary-color);
}

.logo span {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
}

.nav-item {
    margin-left: 30px;
}

.nav-link {
    color: var(--dark-color);
    font-weight: 600;
    font-size: 16px;
    position: relative;
    padding: 5px 0;
}

.nav-link:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 0;
    transition: var(--transition);
}

.nav-link:hover:after,
.nav-link.active:after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

/* Footer */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 24px;
    margin-bottom: 20px;
    display: block;
}

.footer-about p {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--accent-color);
}

.footer-links h3,
.footer-contact h3 {
    color: var(--white);
    font-size: 20px;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3:after,
.footer-contact h3:after {
    content: '';
    position: absolute;
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
    bottom: 0;
    left: 0;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.contact-info {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
}

.contact-icon {
    margin-right: 15px;
    color: var(--accent-color);
    font-size: 20px;
}

.contact-text h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 5px;
}

.contact-text p,
.contact-text a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 50px 0;
        transition: var(--transition);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
    }

    .hamburger {
        display: block;
    }

    .section {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 30px;
    }
}

@media (max-width: 768px) {
    .section-title h2 {
        font-size: 28px;
    }

    .btn {
        padding: 10px 20px;
    }
}
/* PDF Section Styles */
.pdf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.pdf-item {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 20px;
    display: flex;
    gap: 15px;
    transition: var(--transition);
}

.pdf-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.pdf-icon {
    font-size: 40px;
    color: #e74c3c;
    display: flex;
    align-items: center;
}

.pdf-info {
    flex: 1;
}

.pdf-info h4 {
    margin-bottom: 5px;
    color: var(--secondary-color);
}

.pdf-info p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 14px;
}

.pdf-info .btn {
    padding: 8px 15px;
    font-size: 13px;
}

.pdf-category-btn {
    padding: 8px 20px;
    background-color: var(--light-color);
    color: var(--dark-color);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
}

.pdf-category-btn.active, 
.pdf-category-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.pagination {
    display: flex;
    gap: 10px;
}

.pagination a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.pagination a.active, 
.pagination a:hover {
    background-color: var(--primary-color);
    color: white;
}
/* PDF Catalog Styles */
.pdf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.pdf-item {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 20px;
    display: flex;
    gap: 15px;
    transition: var(--transition);
    align-items: center;
}

.pdf-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.pdf-icon {
    font-size: 40px;
    color: #e74c3c;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.pdf-info {
    flex: 1;
    min-width: 0;
}

.pdf-info h4 {
    margin-bottom: 5px;
    color: var(--secondary-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf-info p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 14px;
}

.pdf-info .btn {
    padding: 8px 15px;
    font-size: 13px;
    display: inline-block;
}

.pdf-category-btn {
    padding: 8px 20px;
    background-color: var(--light-color);
    color: var(--dark-color);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.pdf-category-btn.active, 
.pdf-category-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.pagination {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.pagination a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
}

.pagination a.active, 
.pagination a:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .pdf-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .pdf-item {
        flex-direction: column;
        text-align: center;
    }
    
    .pdf-icon {
        margin-bottom: 15px;
    }
}
/* PDF Catalog Styles */
.pdf-catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.pdf-catalog-item {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.pdf-catalog-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.pdf-catalog-icon {
    font-size: 50px;
    color: #e74c3c;
    margin-bottom: 20px;
}

.pdf-catalog-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.pdf-catalog-info p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 14px;
}

.pdf-catalog-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 13px;
}

.pdf-catalog-meta span {
    background-color: #f1f5f9;
    padding: 4px 12px;
    border-radius: 30px;
    color: var(--text-light);
}

.pdf-catalog-item .btn {
    margin-top: auto;
    align-self: flex-start;
    padding: 10px 20px;
    font-size: 14px;
}

.pdf-catalog-item .btn i {
    margin-right: 8px;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.pagination a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-color);
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
}

.pagination a.active, 
.pagination a:hover {
    background-color: var(--primary-color);
    color: white;
}

.page-dots {
    padding: 0 10px;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .pdf-catalog-grid {
        grid-template-columns: 1fr;
    }
    
    .pdf-catalog-item {
        padding: 20px;
    }
}
/* Mobile Menu Styles */
@media (max-width: 768px) {
    .header {
        padding: 10px 0;
    }
    
    .header-container {
        flex-direction: column;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        transition: var(--transition);
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-item {
        margin: 15px 0;
    }
    
    .nav-link {
        color: var(--dark-color);
        font-size: 18px;
    }
    
    .hamburger {
        display: flex;
        flex-direction: column;
        cursor: pointer;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .bar {
        width: 25px;
        height: 3px;
        background-color: var(--dark-color);
        margin: 3px 0;
        transition: var(--transition);
    }
}
/* Mobile Menu Styles (Paste LAST in your CSS) */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
        flex-direction: column;
        cursor: pointer;
        padding: 10px;
    }
    .hamburger-line {
        width: 25px;
        height: 3px;
        background: #333;
        margin: 3px 0;
        transition: 0.3s;
    }
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        transition: 0.3s;
    }
    .nav-menu.active {
        left: 0;
    }
}