.skip-link{
    position: absolute;
    left: -999px;
    top: auto;
    background: #183b56;
    color: white;
    padding: 8px 12px;
    z-index: 1000;
}
.skip-link:focus{
    left: 12px;
    top: 12px;
    border-radius: 6px;
}

/* Header & nav improvements */
.main-nav{
    align-items: center;
    gap: 12px;
}
.nav-toggle{
    display: none;
    background: transparent;
    border: 0;
    font-size: 1.25rem;
    color: var(--primary-text-color);
    cursor: pointer;
}
.nav-links ul{gap:24px}

@media (max-width: 900px){
    .nav-toggle{display: inline-flex}
    .nav-links{
        position: absolute;
        top: 74px;
        right: 12px;
        background: white;
        width: calc(100% - 24px);
        max-width: 320px;
        box-shadow: 0 6px 20px rgba(0,0,0,0.12);
        border-radius: 8px;
        padding: 14px;
        transform-origin: top right;
        display: none;
        z-index: 90;
    }
    .nav-links.active{display:block}
    .nav-links ul{flex-direction:column; gap:12px}
}

/* Hero/header */
header{padding:40px 0}
.header-section{gap:30px}
.header-right img{width:100%; height:320px; object-fit:cover; border-radius:10px}
.header-left h1{margin-bottom:12px}

.back-to-top{
    position: fixed;
    right: 18px;
    bottom: 18px;
    background: var(--green-theme-color);
    color: white;
    border: none;
    padding: 10px 12px;
    border-radius: 50%;
    display: none;
    z-index: 200;
    box-shadow: 0 6px 16px rgba(0,0,0,0.18);
    cursor: pointer;
}

/* Course buttons */
.course-btn {
    margin-top: 20px;
    background: var(--green-theme-color);
    color: white !important;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.course-btn:hover {
    background: var(--green-theme-color-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(70, 215, 84, 0.3);
    color: white !important;
}

.guide-card, .tip-card{transition: transform 0.18s ease}
.guide-card:hover, .tip-card:hover{transform: translateY(-6px)}

.stats-section {
    padding: 80px var(--padding-inline-section);
    background: linear-gradient(135deg, #46d754 0%, #3bc248 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.stat-card {
    text-align: center;
    color: white;
}

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: white;
}

.stat-card p {
    font-size: 1rem;
    color: white;
}

.topics-section {
    padding: 80px var(--padding-inline-section);
    background-color: #f8f9fa;
}

.topics-section h2 {
    text-align: center;
    margin-bottom: 60px;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.topic-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.topic-card:hover {
    transform: translateY(-5px);
}

.topic-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.topic-content {
    padding: 30px;
}

.topic-content h3 {
    margin-bottom: 15px;
    color: var(--primary-text-color);
}

.topic-content p {
    margin-bottom: 20px;
}

.topic-list {
    list-style: none;
    padding: 0;
}

.topic-list li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--secondary-text-color);
}

.topic-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--green-theme-color);
    font-weight: bold;
}

.recycling-guide {
    padding: 80px var(--padding-inline-section);
}

.recycling-guide h2 {
    text-align: center;
    margin-bottom: 60px;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.guide-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.guide-icon {
    margin-bottom: 20px;
}

.guide-card h3 {
    margin-bottom: 20px;
    color: var(--primary-text-color);
}

.guide-details p {
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.guide-details strong {
    color: var(--primary-text-color);
}

.tips-section {
    padding: 80px var(--padding-inline-section);
    background-color: #f8f9fa;
}

.tips-section h2 {
    text-align: center;
    margin-bottom: 60px;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.tip-card {
    background: white;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.tip-card h3 {
    margin-bottom: 20px;
    color: var(--green-theme-color);
    font-size: 1.5rem;
}

.tip-card ul {
    list-style: none;
    padding: 0;
}

.tip-card li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: var(--secondary-text-color);
}

.tip-card li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--green-theme-color);
    font-weight: bold;
}

.cta-section {
    background: linear-gradient(135deg, #46d754 0%, #3bc248 100%);
}

footer {
    background-color: #1a1a1a;
}

footer .company-logo h3 {
    color: white;
}

footer .company-logo h3 b {
    font-weight: 900;
}

footer .link-col h3 {
    color: white;
}

footer .link-col .hover-links {
    color: #d9d9d9;
}

footer .link-col .hover-links:hover {
    color: var(--green-theme-color);
}

.sub-footer {
    background-color: #0d0d0d;
}

.sub-footer-con {
    color: #d9d9d9;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card h3 {
        font-size: 2rem;
    }
}