/* ========================================
   DETAIL PAGE STYLES
======================================== */

/* ====== SHARED KEYFRAMES ====== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ====== DETAIL HERO ====== */
.detail-hero {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 120px 48px 80px;
    overflow: hidden;
}

.detail-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(var(--accent-rgb), 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(var(--accent-secondary-rgb), 0.06) 0%, transparent 50%);
    z-index: -1;
}

.detail-hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(var(--accent-rgb), 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(var(--accent-rgb), 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 10%, transparent 60%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 10%, transparent 60%);
}

.detail-back {
    position: absolute;
    top: 100px;
    left: 48px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
    z-index: 2;
}

.detail-back:hover {
    color: var(--accent);
}

.detail-back svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    transition: transform 0.3s ease;
}

.detail-back:hover svg {
    transform: translateX(-4px);
}

.detail-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: rgba(var(--accent-rgb), 0.06);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    border-radius: 100px;
    font-size: 0.68rem;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.3s forwards;
}

.detail-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.5rem, 6vw, 5rem);
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 24px;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.5s forwards;
}

.detail-title .hl {
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.detail-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.8;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.7s forwards;
}

.detail-meta {
    display: flex;
    gap: 32px;
    margin-top: 40px;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.9s forwards;
}

.detail-meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.detail-meta-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.detail-meta-value {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ====== PROJECT IMAGE ====== */
.detail-image-section {
    padding: 0 48px;
    margin-top: -40px;
    position: relative;
    z-index: 2;
}

.detail-image-wrap {
    max-width: 1200px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 40px 80px rgba(0,0,0,0.4);
    position: relative;
}

.detail-image {
    width: 100%;
    height: 500px;
    position: relative;
    overflow: hidden;
}

.detail-image-gradient {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-image-placeholder {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 4rem);
    font-weight: 800;
    color: rgba(255,255,255,0.08);
    letter-spacing: -0.04em;
    user-select: none;
    text-align: center;
    padding: 0 16px;
    word-break: break-word;
}

.detail-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 60%, var(--bg));
    pointer-events: none;
}

.detail-image-dots {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    gap: 6px;
}

.detail-image-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

/* ====== CONTENT SECTIONS ====== */
.detail-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 48px;
    position: relative;
    z-index: 1;
}

.detail-section {
    margin-bottom: 80px;
}

.detail-section-label {
    font-size: 0.68rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.detail-section-label::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--accent);
}

.detail-section-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.3;
}

.detail-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 16px;
}

.detail-text strong {
    color: var(--text-primary);
    font-weight: 500;
}

.detail-content strong {
    color: var(--text-primary);
    font-weight: 500;
}

.detail-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    padding: 2px 6px;
    background: rgba(0,255,136,0.06);
    border-radius: 4px;
    color: var(--accent);
}

.detail-content ul {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
}

.detail-content ul li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.9;
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
    font-weight: 400;
}

.detail-content ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--accent);
    opacity: 0.5;
}

.detail-content ul li strong {
    color: var(--text-primary);
    font-weight: 500;
}

/* ====== TECH STACK BADGES ====== */
.detail-tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.detail-tech-badge {
    padding: 10px 20px;
    background: var(--bg-elevated);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.detail-tech-badge::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(var(--accent-rgb), 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.detail-tech-badge:hover {
    border-color: rgba(var(--accent-rgb), 0.3);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.detail-tech-badge:hover::before {
    opacity: 1;
}

/* ====== CODE BLOCK ====== */
.detail-code-block {
    background: var(--bg-elevated);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px;
    overflow: hidden;
    margin: 32px 0;
}

.detail-code-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.detail-code-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.detail-code-title {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-left: 8px;
    letter-spacing: 0.05em;
}

.detail-code-body {
    padding: 20px 24px;
    font-size: 0.8rem;
    line-height: 1.8;
    overflow-x: auto;
}

.detail-code-body .line {
    display: flex;
    gap: 20px;
}

.detail-code-body .line-num {
    color: var(--text-dim);
    user-select: none;
    min-width: 24px;
    text-align: right;
}

.detail-code-body .line-content {
    flex: 1;
}

/* ====== FEATURES LIST ====== */
.detail-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.detail-feature {
    padding: 24px;
    background: var(--bg-elevated);
    border: 1px solid rgba(255,255,255,0.04);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.detail-feature:hover {
    border-color: rgba(var(--accent-rgb), 0.2);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.2);
}

.detail-feature-icon {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.detail-feature-title {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 8px;
}

.detail-feature-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ====== STATS ROW ====== */
.detail-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.detail-stat {
    padding: 24px;
    background: var(--bg-elevated);
    border: 1px solid rgba(255,255,255,0.04);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.detail-stat:hover {
    border-color: rgba(var(--accent-rgb), 0.2);
    transform: translateY(-2px);
}

.detail-stat-num {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 8px;
    word-break: break-word;
    overflow-wrap: break-word;
}

.detail-stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ====== IMAGE GALLERY ====== */
.detail-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 32px 0;
}

.detail-gallery-item {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.04);
    height: 200px;
    position: relative;
    transition: all 0.3s ease;
}

.detail-gallery-item:hover {
    transform: scale(1.02);
    border-color: rgba(var(--accent-rgb), 0.2);
}

.detail-gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* ====== BLOG ARTICLE ====== */
.blog-article-hero {
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 120px 48px 60px;
    overflow: hidden;
}

.blog-article-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: 
        radial-gradient(ellipse at 50% 80%, rgba(var(--accent-rgb), 0.06) 0%, transparent 50%);
    z-index: -1;
}

.blog-article-tag {
    display: inline-flex;
    padding: 6px 16px;
    background: rgba(var(--accent-rgb), 0.08);
    border: 1px solid rgba(var(--accent-rgb), 0.15);
    border-radius: 100px;
    font-size: 0.65rem;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.blog-article-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.2;
    color: var(--text-primary);
    max-width: 800px;
    margin-bottom: 24px;
}

.blog-article-meta {
    display: flex;
    gap: 24px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.blog-article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.blog-article-body {
    max-width: 720px;
    margin: 0 auto;
    padding: 60px 48px 120px;
    position: relative;
    z-index: 1;
}

.blog-article-body h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: 48px 0 20px;
    padding-left: 16px;
    border-left: 3px solid var(--accent);
}

.blog-article-body p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

.blog-article-body ul {
    list-style: none;
    margin: 20px 0;
    padding-left: 20px;
}

.blog-article-body ul li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.blog-article-body ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.blog-article-body blockquote {
    border-left: 3px solid var(--accent-secondary);
    padding: 16px 24px;
    margin: 24px 0;
    background: rgba(var(--accent-secondary-rgb), 0.04);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--text-secondary);
}

.blog-article-body code {
    background: var(--bg-elevated);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.82rem;
    color: var(--accent);
}

.blog-article-body pre {
    background: var(--bg-elevated);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    padding: 20px;
    margin: 24px 0;
    overflow-x: auto;
    font-size: 0.78rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.related-posts {
    max-width: 920px;
    margin: -56px auto 96px;
    padding: 0 48px;
    position: relative;
    z-index: 1;
}

.related-posts-kicker {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    color: var(--accent);
    margin-bottom: 12px;
}

.related-posts h2 {
    font-family: var(--font-display);
    font-size: 1.45rem;
    color: var(--text-primary);
    margin-bottom: 22px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.related-post-card {
    min-height: 210px;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 8px;
    background: rgba(255,255,255,0.025);
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.related-post-card:hover {
    transform: translateY(-2px);
    border-color: rgba(0,255,136,0.22);
    background: rgba(0,255,136,0.045);
}

.related-post-tag,
.related-post-more {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--accent);
}

.related-post-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    line-height: 1.45;
    color: var(--text-primary);
}

.related-post-card p {
    font-size: 0.78rem;
    line-height: 1.75;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-post-more {
    margin-top: auto;
}

/* ====== SCROLL PROGRESS BAR ====== */
.detail-scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-secondary), var(--pink));
    z-index: 10000;
    width: 0%;
    transition: width 0.1s ease;
}

/* ====== READING PROGRESS ====== */
.reading-time {
    position: fixed;
    bottom: 40px;
    left: 48px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.reading-time.visible {
    opacity: 1;
}

.reading-time-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid rgba(var(--accent-rgb), 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: var(--accent);
    position: relative;
}

.reading-time-circle svg {
    position: absolute;
    top: -2px;
    left: -2px;
    width: 48px;
    height: 48px;
    transform: rotate(-90deg);
}

.reading-time-circle svg circle {
    fill: none;
    stroke: var(--accent);
    stroke-width: 2;
    stroke-dasharray: 138;
    stroke-dashoffset: 138;
    transition: stroke-dashoffset 0.1s ease;
}

.reading-time-label {
    font-size: 0.6rem;
    color: var(--text-dim);
    letter-spacing: 0.05em;
}

/* ====== TABLE OF CONTENTS ====== */
.detail-toc {
    position: fixed;
    right: 48px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 16px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.detail-toc.visible {
    opacity: 1;
}

.detail-toc-item {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.detail-toc-item:hover,
.detail-toc-item.active {
    background: var(--accent);
    transform: scale(1.5);
    box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.3);
}

.detail-toc-item:hover::before,
.detail-toc-item.active::before {
    content: attr(data-label);
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    white-space: nowrap;
    font-size: 0.65rem;
    color: var(--text-secondary);
    background: var(--bg-elevated);
    padding: 4px 12px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.06);
}

/* ====== FOOTER ====== */
.detail-footer {
    position: relative; z-index: 10000;
    padding: 40px 48px 60px;
    border-top: 1px solid rgba(255,255,255,0.04);
    display: flex; flex-direction: column;
    align-items: center; gap: 16px;
    text-align: center;
}
.detail-footer-copy {
    font-size: 0.68rem; color: var(--text-muted);
}
.detail-footer-copy .heart { color: var(--pink); }
.detail-footer-links { display: flex; gap: 28px; }
.detail-footer-links a {
    font-size: 0.68rem; color: var(--text-muted);
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}
.detail-footer-links a:hover { color: var(--accent); }

/* ====== BACK TO TOP ====== */
.back-to-top {
    position: fixed;
    bottom: 32px; right: 32px;
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--bg-elevated, #0a0e14);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-muted);
    font-size: 1.1rem;
    display: flex; align-items: center; justify-content: center;
    cursor: none;
    z-index: 10001;
    opacity: 0; pointer-events: none;
    transform: translateY(12px);
    transition: all 0.35s ease;
    /* Reset button defaults to prevent layout overflow */
    padding: 0; margin: 0;
    outline: none; -webkit-appearance: none;
    appearance: none; min-width: 0;
}
.back-to-top.visible {
    opacity: 1; pointer-events: auto;
    transform: translateY(0);
}
.back-to-top:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 16px rgba(var(--accent-rgb, 0,255,136), 0.2);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
    .detail-hero {
        padding: 100px 24px 60px;
    }
    
    .detail-back {
        top: 80px;
        left: 24px;
    }
    
    .detail-image-section {
        padding: 0 24px;
    }
    
    .detail-image {
        height: 300px;
    }
    
    .detail-content {
        padding: 60px 24px;
    }
    
    .detail-gallery {
        grid-template-columns: 1fr;
    }
    
    .detail-toc {
        display: none;
    }
    
    .blog-article-hero {
        padding: 100px 24px 40px;
    }
    
    .blog-article-body {
        padding: 40px 24px 80px;
    }

    .related-posts {
        margin: -36px auto 72px;
        padding: 0 24px;
    }

    .related-posts-grid {
        grid-template-columns: 1fr;
    }

    .detail-footer {
        padding: 32px 24px;
    }

    .detail-footer-links {
        gap: 20px;
    }

    /* Code blocks — mobile */
    .detail-code-block { margin: 24px -24px; border-radius: 0; border-left: none; border-right: none; }
    .detail-code-body { padding: 16px; font-size: 0.7rem; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .detail-code-body .line { gap: 12px; }
    .detail-code-body .line-num { min-width: 20px; font-size: 0.65rem; }
    .detail-code-body .line-content { font-size: 0.7rem; }
}