body {
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        line-height: 1.6;
        margin: 0;
        background-image: url('images/webb.png');
        background-repeat: repeat;
        background-size: auto;
        color: #333;
        transition: background-color 0.3s, color 0.3s;
    }

    header {
        background: url('images/dark-paths.png');
        background-repeat: repeat;
        background-size: auto;
        padding: 2.5rem 1rem;
        text-align: center;
    }

    header h1,
    header p {
        color: #ffffff;
    }

    .language-switch { margin-top: 1rem; }

    .language-switch button, #dark-mode-btn {
        background: transparent;
        border: 1px solid white;
        color: white;
        padding: 6px 14px;
        margin: 5px;
        border-radius: 5px;
        cursor: pointer;
        font-size: 0.9rem;
        transition: 0.2s;
    }

    .language-switch button:hover, #dark-mode-btn:hover {
        background: rgba(255,255,255,0.2);
    }

    #backToTop {
        position: fixed;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        display: none; 
        background-color: #3498db;
        color: white;
        border: none;
        width: 45px;
        height: 45px;
        border-radius: 50%;
        cursor: pointer;
        font-size: 20px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.2);
        z-index: 1000;
        opacity: 0.5;
        transition: opacity 0.3s, background-color 0.3s, transform 0.2s;
    }

    #backToTop:hover {
        background-color: #2980b9;
        opacity: 1;
        transform: translateX(-50%) scale(1.1);
    }

    main {
        max-width: 800px;
        margin: 2rem auto;
        padding: 2rem;
        background: rgba(255, 255, 255, 0.4);
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        border-radius: 8px;
        transition: background-color 0.3s, box-shadow 0.3s;
    }

    .fade-in-section {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        margin-bottom: 2.5rem;
    }

    .fade-in-section.is-visible {
        opacity: 1;
        transform: translateY(0);
    }

    h2 {
        border-bottom: 2px solid #3498db;
        padding-bottom: 8px;
        color: #2c3e50;
        transition: color 0.3s, border-color 0.3s;
    }

    .skills {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
        list-style: none;
        padding: 0;
        margin-top: 1rem;
    }

    .skills li {
        background: #3498db;
        color: white;
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 0.9rem;
        transition: 0.2s;
    }

    .skills li:hover {
        background: #2980b9;
        transform: scale(1.05);
    }
    
    .gallery { display: block; margin-top: 2rem; }

    .gallery figure {
        margin: 0 0 2rem 0;
        background: #f9f9f9;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 3px 10px rgba(0,0,0,0.1);
        text-align: center;
        transition: background-color 0.3s;
    }

    .gallery img {
        width: 100%;
        height: auto;
        display: block;
        object-fit: contain;
    }

    .gallery figcaption {
        padding: 0.7rem;
        font-size: 0.9rem;
        color: #555;
        transition: color 0.3s;
    }

    footer {
        text-align: center;
        padding: 2rem;
        font-size: 0.8rem;
        color: #777;
    }

    body.dark-mode {
        background-image: url('images/webb-dark.png');
        background-repeat: repeat;
        background-size: auto;
        color: #f0f0f0;
    }

    body.dark-mode main {
        background-color: rgba(30, 30, 30, 0.8);
        box-shadow: 0 4px 20px rgba(0,0,0,0.5);
    }

    body.dark-mode h2 {
        color: #4db8ff;
        border-bottom-color: #4db8ff;
    }

    body.dark-mode .gallery figure { background-color: #2a2a2a; }
    body.dark-mode .gallery figcaption { color: #bbb; }
    body.dark-mode footer { color: #555; }
    body.dark-mode #backToTop { background-color: #4db8ff; color: #121212; }

    @media (max-width: 600px) {
        header h1 { font-size: 1.6rem; }
        main { padding: 1rem; margin: 1rem; }
    }

    html { scroll-behavior: smooth; }

    .fade-in-section p a:hover {
        text-decoration: underline;
        color: #3498db;
    }

    .specs-container {
        overflow-x: auto;
        margin-top: 1rem;
    }
    
    .specs-table {
        width: 100%;
        border-collapse: collapse;
        background: #fff;
        border-radius: 8px;
        overflow: hidden;
    }
    
    .specs-table th, .specs-table td {
        padding: 12px 15px;
        text-align: left;
        border-bottom: 1px solid #ddd;
    }
    
    .specs-table th {
        background-color: #2c3e50;
        color: white;
        font-weight: 600;
    }
    
    .specs-table tr:nth-child(even) {
        background-color: #f9f9f9;
    }
    
    body.dark-mode .specs-table {
        background-color: #2a2a2a;
        color: #f0f0f0;
    }
    
    body.dark-mode .specs-table tr:nth-child(even) {
        background-color: #333;
    }
    
    body.dark-mode .specs-table td {
        border-bottom-color: #444;
    }

    a:hover, button:hover {
        cursor: pointer;
    }

    .action-button {
        display: inline-block;
        padding: 12px 24px;
        background-color: #3498db;
        color: white !important;
        text-decoration: none;
        border-radius: 5px;
        font-weight: bold;
        transition: transform 0.2s, background-color 0.2s;
        margin-top: 20px;
    }
    
    .action-button:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
}

    
    body.dark-mode .action-button {
        background-color: #4db8ff;
        color: #121212 !important;
    }

    .button-description {
        font-size: 0.9rem;
        color: #666;
        margin-top: 10px;
        font-style: italic;
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .course-container:hover .button-description {
        opacity: 1;
    }

    body.dark-mode .button-description {
        color: #bbb;
    }

    nav {
        display: block !important;
        text-align: center;
        background: #34495e;
        padding: 10px 0;
    }
    
    nav ul { list-style: none; padding: 0; margin: 0; }
    nav li { display: inline; margin: 0 15px; }
    nav a { color: white; text-decoration: none; font-weight: bold; }
    
    .fade-in-section img {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
        display: block;
        margin: 0 auto;
    }
    
    
    @media (max-width: 600px) {
        .fade-in-section div[style*="padding: 2rem"] {
            padding: 1rem !important;
        }
    }
    
    .project-card {
        background: rgba(52, 152, 219, 0.1);
        padding: 2rem;
        border-radius: 8px;
        border: 1px dashed #3498db;
        margin-top: 1rem;
        text-align: center;
    }
    
    @media (max-width: 600px) {
        .project-card {
            padding: 1rem;
        }
    }
    
    .gallery figure {
        min-height: 200px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        background: rgba(0,0,0,0.03);
    }
    
    body.dark-mode .gallery figure {
        background: rgba(255,255,255,0.03);
    }
    
    .status-pulse {
        width: 10px;
        height: 10px;
        background-color: #2ecc71;
        border-radius: 50%;
        box-shadow: 0 0 0 rgba(46, 204, 113, 0.4);
        animation: pulse 2s infinite;
    }
    
    @keyframes pulse {
        0% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.7); }
        70% { box-shadow: 0 0 0 10px rgba(46, 204, 113, 0); }
        100% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0); }
    }
    
    .docs-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr); 
        gap: 15px;
        margin-top: 1.5rem;
    }
    
    @media (max-width: 800px) {
        .docs-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    
    @media (max-width: 500px) {
        .docs-grid {
            grid-template-columns: 1fr;
        }
    }
    
    .doc-card {
        background: #fff;
        border: 1px solid #ddd;
        padding: 1.2rem;
        border-radius: 8px;
        text-align: center;
        transition: all 0.3s ease;
        text-decoration: none;
        color: inherit;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .doc-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 5px 15px rgba(52, 152, 219, 0.2);
        border-color: #3498db;
    }
    
    .doc-icon {
        font-size: 2.2rem;
        margin-bottom: 8px;
    }
    
    .doc-title {
        font-weight: 600;
        font-size: 0.95rem;
        margin-bottom: 4px;
    }
    
    .doc-type {
        font-size: 0.75rem;
        color: #3498db;
        font-weight: bold;
    }
    
    body.dark-mode .doc-card {
        background: #2a2a2a;
        border-color: #444;
    }
    
    body.dark-mode .doc-type {
        color: #4db8ff;
    }
    
    .share-container {
        text-align: center;
        margin-top: 1.5rem;
        padding-bottom: 1rem;
    }
    
    .share-btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 10px 22px;
        background-color: #3498db;
        color: white;
        border: none;
        border-radius: 25px;
        font-weight: bold;
        font-size: 0.95rem;
        cursor: pointer;
        transition: transform 0.2s, background-color 0.2s, box-shadow 0.2s;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .share-btn:hover {
        background-color: #2980b9;
        transform: translateY(-2px);
        box-shadow: 0 6px 12px rgba(52, 152, 219, 0.3);
    }
    
    .share-btn:active {
        transform: translateY(0);
    }
    
    #share-msg {
        font-size: 0.85rem;
        margin-top: 8px;
        height: 1.2rem;
        color: #2ecc71;
        font-weight: 600;
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    body.dark-mode .share-btn {
        background-color: #4db8ff;
        color: #121212;
    }
    
    body.dark-mode .share-btn:hover {
        background-color: #3ca0e6;
        box-shadow: 0 6px 12px rgba(77, 184, 255, 0.3);
    }
    
    body.dark-mode #share-msg {
        color: #2ecc71;
    }
    
    .share-btn:hover #share-icon {
        animation: wiggle 0.5s ease-in-out;
    }
    
    @keyframes wiggle {
        0% { transform: rotate(0deg); }
        25% { transform: rotate(-15deg); }
        75% { transform: rotate(15deg); }
        100% { transform: rotate(0deg); }
    }
    
    .github-source-button {
        display: inline-flex;
        align-items: center;
        background-color: #24292e;
        color: #ffffff !important;
        padding: 10px 20px;
        border-radius: 6px;
        text-decoration: none;
        font-weight: 500;
        font-size: 0.9rem;
        transition: background-color 0.3s ease, transform 0.2s ease;
        border: 1px solid rgba(255,255,255,0.1);
    }
    
    .debloat-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        padding: 20px;
        max-width: 1000px;
        margin: 0 auto;
    }
    
    .opt-card {
        background: var(--surface);
        border: 1px solid var(--border);
        padding: 20px;
        border-radius: 12px;
        text-decoration: none;
        color: inherit;
        transition: transform 0.2s, border-color 0.2s;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .opt-card:hover {
        transform: translateY(-5px);
        border-color: var(--blue);
        box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    }
    
    .opt-icon {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .opt-title {
        font-weight: bold;
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .opt-desc {
        font-size: 0.85rem;
        opacity: 0.7;
    }
    
    .github-source-button:hover {
        background-color: #444d56;
        transform: translateY(-2px);
    }
    
    .dark-mode .github-source-button {
        background-color: #161b22;
        border: 1px solid #30363d;
    }

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 100%;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}