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

body {
    font-family: "Montserrat", sans-serif;
    color: #333;
    background-color: #f8f8f8;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header and Navigation */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background-color: rgba(255, 255, 255, 0.95);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo img {
    height: 70px;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

/* Navigation Links */
.nav-links {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
}

.nav-links li {
    position: relative;
    margin: 0 15px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 10px 5px;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #333;
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: #000;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    list-style: none;
    margin: 0;
    padding: 10px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    min-width: 200px;
    z-index: 100;
    transform: translateY(10px);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-links .dropdown-menu li {
    margin: 0;
}

.nav-links .dropdown-menu a {
    padding: 10px 20px;
    display: block;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-links .dropdown-menu a:hover {
    background-color: #f5f5f5;
    color: #000;
}

.nav-links .dropdown-menu a::after {
    display: none;
}

.nav-links .dropdown:hover .dropdown-menu {
    display: block;
    transform: translateY(0);
    opacity: 1;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.bar {
    width: 100%;
    height: 3px;
    background-color: #333;
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../images/pexels-cottonbro-4790052.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    color: #fff;
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.hero-content p {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 30px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Download Section */
.download-section {
    padding: 80px 0;
    background-color: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background-color: #333;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
}

/* Download Categories */
.download-categories {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    background-color: #f5f5f5;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    font-family: "Montserrat", sans-serif;
}

.tab-btn.active, .tab-btn:hover {
    background-color: #333;
    color: #fff;
}

.search-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

#search-documents {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 30px 0 0 30px;
    width: 250px;
    font-family: "Montserrat", sans-serif;
}

#search-btn {
    padding: 10px 15px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 0 30px 30px 0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#search-btn:hover {
    background-color: #000;
}

/* Download Grid */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.download-card {
    display: flex;
    flex-direction: column;
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.download-card.animate {
    opacity: 1;
    transform: translateY(0);
}

.download-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: #f5f5f5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #333;
    margin: 20px auto 10px;
}

.card-content {
    padding: 20px;
    flex-grow: 1;
    text-align: center;
}

.card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

.card-content p {
    color: #666;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.card-meta {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 15px;
    font-size: 0.85rem;
    color: #888;
}

.card-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background-color: #333;
    color: #fff;
    text-decoration: none;
    transition: background-color 0.3s ease;
    font-weight: 500;
}

.download-btn:hover {
    background-color: #000;
}

.no-results {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 50px 0;
    text-align: center;
}

.no-results i {
    font-size: 3rem;
    color: #ddd;
    margin-bottom: 20px;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #333;
}

.no-results p {
    color: #666;
}

/* Help Section */
.help-section {
    padding: 80px 0;
    background-color: #f5f5f5;
    text-align: center;
}

.help-content {
    max-width: 700px;
    margin: 0 auto;
}

.help-content h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.help-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
}

.help-button {
    display: inline-block;
    padding: 12px 30px;
    background-color: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.help-button:hover {
    background-color: #000;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Footer */
footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex-wrap: wrap;
}

.footer-column {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 2px;
    background-color: #fff;
    bottom: 0;
    left: 0;
}

.footer-column p {
    color: #aaa;
    line-height: 1.6;
}

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

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #fff;
}

.footer-column .social-media {
    display: flex;
    gap: 15px;
}

.footer-column .social-media a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #333;
    color: #fff;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.footer-column .social-media a:hover {
    background-color: #fff;
    color: #333;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    border-top: 1px solid #333;
}

.footer-bottom p {
    color: #aaa;
    margin: 5px 0;
}

/* Animation Classes */
.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 1s ease;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 1s ease;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 1s ease;
}

.slide-in-left.animate,
.slide-in-right.animate,
.fade-in.animate {
    opacity: 1;
    transform: translateY(0) translateX(0);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .hero-content p {
        font-size: 1.3rem;
    }
    
    .download-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
    
    .download-categories {
        flex-direction: column;
        align-items: stretch;
    }
    
    .category-tabs {
        justify-content: center;
        margin-bottom: 20px;
    }
    
    .search-container {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
    
    #search-documents {
        flex-grow: 1;
    }
}

@media (max-width: 768px) {
    header {
        padding: 15px 20px;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 90px;
        left: 0;
        width: 100%;
        height: calc(100vh - 90px);
        background-color: #fff;
        display: none;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        overflow-y: auto;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        z-index: 999;
        transition: transform 0.3s ease;
        transform: translateY(-10px);
        opacity: 0;
    }
    
    .nav-links.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-links li {
        margin: 15px 0;
        width: 100%;
        text-align: center;
    }
    
    .nav-links a {
        display: block;
        padding: 10px 20px;
        font-size: 1.1rem;
    }
    
    .nav-links a::after {
        display: none;
    }
    
    .nav-links .dropdown-menu {
        position: static;
        box-shadow: none;
        transform: none;
        width: 100%;
        padding: 0;
        background-color: #f5f5f5;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .nav-links .dropdown.active .dropdown-menu {
        display: block;
        max-height: 500px;
    }
    
    .nav-links .dropdown-menu a {
        padding: 10px 0;
        font-size: 0.9rem;
    }
    
    .hero {
        height: 30vh;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .section-header h2,
    .help-content h2 {
        font-size: 2rem;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .tab-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
    
    .footer-container {
        flex-direction: column;
    }
    
    .footer-column {
        margin-bottom: 40px;
        text-align: center;
    }
    
    .footer-column h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-column .social-media {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .section-header h2,
    .help-content h2 {
        font-size: 1.8rem;
    }
    
    .section-header p,
    .help-content p {
        font-size: 1rem;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
    
    .card-content h3 {
        font-size: 1.2rem;
    }
    
    .search-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    #search-documents {
        width: 100%;
        border-radius: 30px;
        margin-bottom: 10px;
    }
    
    #search-btn {
        border-radius: 30px;
    }
}