/* ============================================================
   SkillSheet Ghost Theme — screen.css
   Brand: Poppins, #f96617 orange, clean/minimal
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --color-primary: #f96617;
    --color-primary-light: #fb923c;
    --color-primary-dark: #c2410c;
    --color-primary-bg: #fff7ed;
    --color-text: #151515;
    --color-text-secondary: #64748b;
    --color-bg: #ffffff;
    --color-border: #e5e7eb;
    --color-card-bg: #fffaf5;
    --color-code-bg: #f8f9fa;
    --font-sans: 'Poppins', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', 'Poppins', system-ui, sans-serif;
    --radius: 8px;
    --max-width: 1200px;
    --content-width: 720px;
    --header-height: 56px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-primary); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--color-primary-dark); }

img { max-width: 100%; height: auto; display: block; }

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.1rem;
}
.site-logo:hover { color: var(--color-text); }
.site-logo-text { letter-spacing: -0.01em; }

.site-logo-img { width: 28px; height: 28px; border-radius: 6px; }

.site-nav { display: flex; align-items: center; gap: 0; }
.site-nav ul { display: flex; align-items: center; gap: 0; list-style: none; margin: 0; padding: 0; }
.site-nav li { list-style: none; }
.site-nav a,
.site-nav li a {
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    transition: all 0.15s ease;
    display: inline-block;
}
.site-nav a:hover,
.site-nav li a:hover {
    color: var(--color-primary);
    background: var(--color-primary-bg);
}
.site-nav .nav-current a {
    color: var(--color-primary);
    background: var(--color-primary-bg);
}

/* --- Blog Hero --- */
.blog-hero {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, #ffffff 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 56px 24px 48px;
}

.blog-hero-inner {
    max-width: var(--content-width);
    margin: 0 auto;
    text-align: center;
}

.blog-hero-title {
    font-family: var(--font-sans);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.025em;
    line-height: 1.2;
    margin-bottom: 12px;
}

.blog-hero-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.6;
}

.author-hero-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 16px;
    border: 3px solid var(--color-primary-bg);
}

/* --- Post Feed --- */
.post-feed-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 48px 24px 64px;
}

.post-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 28px;
}

/* --- Post Card --- */
.post-card { border-radius: var(--radius); overflow: hidden; background: var(--color-bg); border: 1px solid var(--color-border); transition: all 0.2s ease; }
.post-card:hover { border-color: var(--color-primary-light); box-shadow: 0 4px 24px rgba(249, 102, 23, 0.08); transform: translateY(-2px); }

.post-card-link { display: block; color: var(--color-text); }
.post-card-link:hover { color: var(--color-text); }

.post-card-image {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    background-color: var(--color-primary-bg);
}
.post-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
}

.post-card-content { padding: 20px 24px 24px; }

.post-card-tag {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    background: var(--color-primary-bg);
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.post-card-title {
    font-family: var(--font-sans);
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.01em;
    margin-bottom: 8px;
}

.post-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}
.post-card-meta time { font-weight: 500; }
.post-card-reading-time::before { content: "\00b7"; margin-right: 12px; }

/* --- Single Post --- */
.post-header {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, #ffffff 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 56px 24px 48px;
}
.post-header-inner {
    max-width: var(--content-width);
    margin: 0 auto;
}

.post-tag {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    background: var(--color-primary-bg);
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: 16px;
}
.post-tag:hover { background: #fed7aa; color: var(--color-primary-dark); }

.post-title {
    font-family: var(--font-sans);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: 16px;
}

.post-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.post-meta-header {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.post-author {
    display: flex;
    align-items: center;
    gap: 8px;
}
.post-author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}
.post-author-name { font-weight: 500; color: var(--color-text); }
.post-reading-time::before { content: "\00b7"; margin-right: 16px; }

/* --- Feature Image --- */
.post-feature-image {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 24px 0;
}
.post-feature-image img {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}
.post-feature-image figcaption {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: 10px;
}

/* --- Post Content --- */
.post-content {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 40px 24px 64px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.post-content h1, .post-content h2, .post-content h3,
.post-content h4, .post-content h5, .post-content h6 {
    font-family: var(--font-sans);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.3;
    color: var(--color-text);
    margin-top: 2.2em;
    margin-bottom: 0.6em;
}
.post-content h2 { font-size: 1.65rem; }
.post-content h3 { font-size: 1.35rem; }
.post-content h4 { font-size: 1.15rem; }

.post-content p { margin-bottom: 1.4em; }
.post-content p + p { margin-top: 0; }

.post-content ul, .post-content ol {
    margin-bottom: 1.4em;
    padding-left: 1.6em;
}
.post-content li { margin-bottom: 0.4em; }
.post-content li::marker { color: var(--color-primary); }

.post-content blockquote {
    border-left: 3px solid var(--color-primary);
    padding: 4px 0 4px 24px;
    margin: 1.6em 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.post-content code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.88em;
    background: var(--color-code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

.post-content pre {
    background: #1e293b;
    color: #e2e8f0;
    border-radius: var(--radius);
    padding: 20px 24px;
    overflow-x: auto;
    margin: 1.6em 0;
    font-size: 0.88rem;
    line-height: 1.6;
}
.post-content pre code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
}

.post-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-color: rgba(249, 102, 23, 0.3);
    text-underline-offset: 2px;
    transition: text-decoration-color 0.15s ease;
}
.post-content a:hover {
    text-decoration-color: var(--color-primary);
}

.post-content img {
    border-radius: var(--radius);
    margin: 1.6em 0;
}

.post-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2.4em 0;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6em 0;
    font-size: 0.95rem;
}
.post-content th, .post-content td {
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    text-align: left;
}
.post-content th {
    background: var(--color-code-bg);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.85rem;
}

/* --- Post Footer --- */
.post-footer {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 24px 48px;
    border-top: 1px solid var(--color-border);
    padding-top: 24px;
}
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.post-footer-tag {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-code-bg);
    padding: 4px 12px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    transition: all 0.15s ease;
}
.post-footer-tag:hover {
    color: var(--color-primary);
    border-color: var(--color-primary-light);
    background: var(--color-primary-bg);
}

/* --- Comments --- */
.post-comments {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 24px 64px;
}

/* --- Pagination --- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}
.pagination-btn {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
    padding: 8px 20px;
    border: 1px solid var(--color-primary);
    border-radius: 6px;
    transition: all 0.15s ease;
}
.pagination-btn:hover {
    background: var(--color-primary);
    color: #fff;
}
.pagination-info {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 24px;
    background: var(--color-code-bg);
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-text);
}
.footer-logo:hover { color: var(--color-text); }
.footer-copy {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: 6px;
}
.footer-right {
    display: flex;
    gap: 20px;
}
.footer-right a {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}
.footer-right a:hover { color: var(--color-primary); }

/* --- Error Page --- */
.error-page {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 120px 24px;
    text-align: center;
}
.error-code {
    font-family: var(--font-sans);
    font-size: 6rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 12px;
}
.error-message {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}
.error-link {
    display: inline-block;
    font-family: var(--font-sans);
    font-weight: 500;
    padding: 10px 24px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 6px;
    transition: background 0.15s ease;
}
.error-link:hover { background: var(--color-primary-dark); color: #fff; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .blog-hero { padding: 40px 20px 36px; }
    .blog-hero-title { font-size: 1.75rem; }
    .post-feed { grid-template-columns: 1fr; gap: 20px; }
    .post-title { font-size: 1.85rem; }
    .post-content { font-size: 1rem; padding: 32px 20px 48px; }
    .post-header { padding: 40px 20px 36px; }
    .post-feature-image { padding: 24px 20px 0; }
    .post-meta-header { gap: 10px; }
    .footer-inner { flex-direction: column; align-items: flex-start; }
    .site-nav a { padding: 6px 10px; font-size: 0.8rem; }
    .header-inner { padding: 0 16px; }
}

@media (max-width: 480px) {
    .post-card-image { height: 160px; }
    .post-card-content { padding: 16px 18px 20px; }
    .blog-hero-title { font-size: 1.5rem; }
    .post-title { font-size: 1.55rem; }
}

/* --- Ghost-specific overrides --- */
.kg-card { margin: 1.6em 0; }
.kg-image-card img { border-radius: var(--radius); }

/* Required Ghost width classes */
.kg-width-wide {
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
}
.kg-width-full {
    max-width: none;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    width: 100vw;
}
.kg-width-full img { width: 100%; }

.kg-bookmark-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.kg-callout-card {
    border-radius: var(--radius);
    padding: 20px 24px;
}
.kg-toggle-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}
.kg-button-card .kg-btn {
    background: var(--color-primary);
    border-radius: 6px;
    font-family: var(--font-sans);
}
.kg-header-card { border-radius: var(--radius); }
.kg-gallery-card { margin: 1.6em 0; }
.kg-gallery-row { display: flex; gap: 8px; }
.kg-gallery-image img { border-radius: var(--radius); }