.project-detail {
    max-width: 800px;
    margin: 0 auto;
}

.project-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 10;
    padding: 1rem 0;
    margin-bottom: 1rem;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    opacity: 0;
    animation: fadeIn 0.3s ease-in 0.1s forwards;
}

.project-nav-arrows {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.back-link {
    display: inline-block;
    padding: 0.4rem 1rem;
    color: var(--text-subtle);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    transition: color 0.2s, border-color 0.2s;
    white-space: nowrap;
}

.back-link:hover {
    color: var(--link);
    border-color: var(--link);
}

.nav-arrow {
    color: var(--link);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    white-space: nowrap;
}

.nav-arrow:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

.project-header {
    margin-bottom: 2rem;
}

.project-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--heading);
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    margin-top: -1.5rem;
    margin-bottom: 2rem;
}

.project-date {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Blog-style content */
.project-blog-content {
    line-height: 1.8;
}

.project-blog-content h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--heading);
}

.project-blog-content h2:first-child {
    margin-top: 0;
}

.project-blog-content p {
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.project-blog-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.project-blog-content li {
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 0.4rem;
}

.project-blog-content a {
    color: var(--link);
    text-decoration: none;
    transition: color 0.3s;
}

.project-blog-content a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Topic reference links — visually distinct from regular external links */
.project-blog-content a.topic-link,
a.topic-link {
    color: var(--topic-link);
    text-decoration: underline;
    text-decoration-style: dashed;
    text-decoration-color: var(--topic-link-underline);
    text-decoration-thickness: 1.5px;
    font-weight: 500;
    transition: color 0.2s;
}

.project-blog-content a.topic-link:hover,
a.topic-link:hover {
    color: var(--topic-link-hover);
    text-decoration-style: solid;
}

/* Blog images */
.blog-image {
    max-width: 100%;
    height: auto;
    margin: 2rem auto;
    border: 1px solid var(--border-light);
    display: block;
    cursor: pointer;
    transition: opacity 0.2s;
}

.blog-image:hover {
    opacity: 0.9;
}

/* Image size classes */
.blog-image.small {
    width: 300px;
}

.blog-image.medium {
    width: 500px;
}

.blog-image.large {
    width: 700px;
}

.blog-image.full {
    width: 100%;
}

/* Header trailer video (replaces poster image at top of project page) */
.project-trailer {
    display: block;
    max-width: 100%;
    margin: 2rem auto;
    border: 1px solid var(--border-light);
    line-height: 0;
    transition: opacity 0.2s;
    width: 100%;
}

.project-trailer.small { width: 300px; }
.project-trailer.medium { width: 500px; }
.project-trailer.large { width: 700px; }
.project-trailer.full { width: 100%; }

a.project-trailer { cursor: pointer; }
a.project-trailer:hover { opacity: 0.9; }

.project-trailer-video {
    width: 100%;
    height: auto;
    display: block;
}

/* Image modal/lightbox */
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    cursor: pointer;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.image-modal.active {
    display: flex;
}

.image-modal img {
    max-width: 95%;
    max-height: 80%;
    object-fit: contain;
    border: none;
    margin-bottom: 1rem;
}

.image-modal-caption {
    color: #fff;
    text-align: center;
    font-size: 1rem;
    max-width: 90%;
    padding: 0 1rem;
}

.image-modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    user-select: none;
}

.image-modal-close:hover {
    color: #ccc;
}

/* Project buttons */
.project-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    margin-right: 1rem;
    margin-bottom: 1rem;
    background-color: var(--link);
    color: #fff !important;
    text-decoration: none !important;
    font-weight: 500;
    transition: background-color 0.3s;
    border: 2px solid var(--link);
}

.project-button:hover {
    background-color: var(--link-hover);
    border-color: var(--link-hover);
}

.project-button.secondary {
    background-color: transparent;
    color: var(--link) !important;
}

.project-button.secondary:hover {
    background-color: var(--link);
    color: #fff !important;
}

/* Technology tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-tag {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (max-width: 768px) {
    .project-header h1 {
        font-size: 2rem;
    }

    .project-blog-content h2 {
        font-size: 1.5rem;
    }

    .project-blog-content p {
        font-size: 1.05rem;
    }

    .blog-image {
        margin: 1.5rem 0;
    }

    .blog-image.small,
    .blog-image.medium,
    .blog-image.large {
        width: 100%;
    }

    .project-trailer {
        margin: 1.5rem 0;
    }

    .project-trailer.small,
    .project-trailer.medium,
    .project-trailer.large {
        width: 100%;
    }

    .image-modal-close {
        top: 10px;
        right: 15px;
        font-size: 30px;
    }
}