/* ============================================================
   blog.css — Juan David Ortiz · Dev Blog
   Self-contained stylesheet for blog.juandot.com
   Design tokens mirror the main site (juandot.com)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; font-size: 16px; }
img   { display: block; max-width: 100%; }
a     { color: inherit; }
ul    { list-style: none; }

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
    --cream:        #edf7f5;
    --warm-white:   #f4fbf9;
    --forest:       #1b3048;
    --sage:         #3a8c80;
    --sage-light:   #7abfb8;
    --sage-pale:    #c8e8e4;
    --sage-dark:    #246858;
    --mint:         #a8e0d8;
    --gold:         #9e9030;
    --gold-light:   #c4b850;
    --gold-pale:    #eeebb0;
    --sky:          #3aa8c0;
    --sky-light:    #80ccd8;
    --sky-pale:     #cceef5;
    --rose:         #7ab8cc;
    --rose-pale:    #cce8f0;
    --text-dark:    #1b3048;
    --text-mid:     #2e5068;
    --text-light:   #4a7888;
    --text-muted:   #7aaabb;
    --sp-xs:  0.5rem;
    --sp-sm:  1rem;
    --sp-md:  2rem;
    --sp-lg:  4rem;
    --sp-xl:  6rem;
    --sp-2xl: 8rem;
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-body:    'Inter', system-ui, -apple-system, sans-serif;
    --font-mono:    'JetBrains Mono', 'Courier New', monospace;
    --r-sm:   4px;
    --r-md:   8px;
    --r-lg:   12px;
    --r-xl:   16px;
    --shadow-sm: 0 2px 8px  rgba(27,48,72,0.08);
    --shadow-md: 0 8px 24px rgba(27,48,72,0.12);
    --shadow-lg: 0 16px 48px rgba(27,48,72,0.16);
    --ease: 0.3s ease;
}

body {
    font-family: var(--font-body);
    background-color: var(--cream);
    color: var(--text-dark);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

/* Subtle star field background */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(58,140,128,0.15), transparent),
        radial-gradient(1px 1px at 60% 70%, rgba(58,168,192,0.12), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(158,144,48,0.1), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(58,140,128,0.13), transparent),
        radial-gradient(1px 1px at 90% 60%, rgba(58,168,192,0.11), transparent),
        radial-gradient(1px 1px at 33% 85%, rgba(158,144,48,0.12), transparent),
        radial-gradient(1px 1px at 75% 40%, rgba(58,140,128,0.1), transparent),
        radial-gradient(1px 1px at 15% 65%, rgba(58,168,192,0.14), transparent);
    background-size: 200% 200%;
    background-position: 0% 0%;
    pointer-events: none;
    z-index: 0;
    animation: twinkleStars 60s ease-in-out infinite;
}

@keyframes twinkleStars {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 0.3; }
}

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.15; }

/* ============================================================
   LAYOUT
   ============================================================ */
.container        { max-width: 1200px; margin: 0 auto; padding: 0 var(--sp-md); position: relative; z-index: 1; }
.container-narrow { max-width: 800px;  margin: 0 auto; padding: 0 var(--sp-md); position: relative; z-index: 1; }

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: lowercase;
    color: var(--sky);
    margin-bottom: 0.5rem;
}
.section-label::before { content: '// '; opacity: 0.65; }

/* ============================================================
   DARK MODE INPUT
   ============================================================ */
.dark-mode-input {
    position: fixed; opacity: 0; width: 0; height: 0; pointer-events: none;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    background: rgba(237,247,245,0.92);
    border-bottom: 1px solid rgba(58,140,128,0.18);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--sp-md);
    height: 68px;
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

/* Brand breadcrumb: juandot.com / blog */
.nav-brand-group {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-shrink: 0;
    text-decoration: none;
}

.nav-brand-home {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-light);
    text-decoration: none;
    transition: color var(--ease);
}
.nav-brand-home:hover { color: var(--sky); }

.brand-sep {
    font-family: var(--font-mono);
    color: var(--sky);
    font-weight: 300;
    font-size: 0.9rem;
}

.nav-brand-blog {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.01em;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-mid);
    transition: color var(--ease);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -3px; left: 0;
    width: 0; height: 2px;
    background: var(--sky);
    border-radius: 2px;
    transition: width var(--ease);
}
.nav-links a:hover { color: var(--sage-dark); }
.nav-links a:hover::after { width: 100%; }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-left: auto;
    padding-left: 1rem;
    border-left: 1px solid rgba(58,140,128,0.22);
    flex-shrink: 0;
}

.dark-mode-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px; height: 32px;
    border-radius: var(--r-sm);
    cursor: pointer;
    color: var(--text-mid);
    border: 1.5px solid rgba(58,140,128,0.22);
    transition: all var(--ease);
    flex-shrink: 0;
    background: transparent;
}
.dark-mode-btn:hover {
    background: rgba(58,168,192,0.1);
    border-color: rgba(58,168,192,0.4);
    color: var(--sky);
    transform: scale(1.08);
}
.dm-icon { width: 15px; height: 15px; flex-shrink: 0; }
.dm-moon { display: none; }
.dm-sun  { display: block; }

/* ============================================================
   SHARED HEADER PATTERN (blog + article)
   ============================================================ */
.page-header {
    padding-top: 68px;
    background: linear-gradient(135deg, #0d1f35 0%, #1a3050 50%, #0f2540 100%);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(58,168,192,0.2);
    z-index: 1;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(180,220,255,0.08) 1.5px, transparent 1.5px),
        radial-gradient(circle at 80% 70%, rgba(180,220,255,0.06) 1px, transparent 1px),
        radial-gradient(circle at 50% 50%, rgba(255,230,120,0.05) 1.5px, transparent 1.5px),
        radial-gradient(circle at 10% 80%, rgba(180,220,255,0.07) 1px, transparent 1px),
        radial-gradient(circle at 90% 20%, rgba(255,255,255,0.1) 2px, transparent 2px);
    background-size: 150px 150px, 200px 200px, 180px 180px, 220px 220px, 300px 300px;
    pointer-events: none;
    opacity: 0.7;
    animation: driftStars 120s linear infinite;
}

@keyframes driftStars {
    0% { background-position: 0 0, 0 0, 0 0, 0 0, 0 0; }
    100% { background-position: 150px 150px, -200px 200px, 180px -180px, -220px 220px, 300px -300px; }
}

.page-header-inner {
    padding: var(--sp-xl) 0 var(--sp-lg);
    position: relative;
    z-index: 1;
}

/* Blinking dot eyebrow */
.blog-eyebrow {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    margin-bottom: 1rem;
}

.eyebrow-line {
    display: inline-block;
    width: 6px; height: 6px;
    background: var(--sky);
    border-radius: 50%;
    animation: blinkDot 1.4s step-end infinite;
}

.blog-eyebrow span:last-child {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--sage-dark);
}
.blog-eyebrow span:last-child::before { content: '→ '; color: var(--sky); }

/* ============================================================
   BLOG INDEX — header + post grid
   ============================================================ */
.blog-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: #e8f4ff;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(58,168,192,0.3), 0 0 60px rgba(58,168,192,0.15);
}
.blog-title em { font-style: normal; font-weight: 400; color: #60d0e8; }

.blog-subtitle {
    font-size: 1.05rem;
    color: #a8d4e8;
    max-width: 560px;
    line-height: 1.8;
}

/* Posts section */
.posts-section {
    padding: var(--sp-2xl) 0;
    background: var(--warm-white);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-md);
}

.post-card-featured { grid-column: span 2; }

.post-card {
    background: var(--cream);
    border-radius: var(--r-xl);
    border: 1px solid rgba(58,140,128,0.15);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all var(--ease);
    text-decoration: none;
    color: inherit;
    position: relative;
}
.post-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% -20%, rgba(58,168,192,0.03), transparent 70%);
    opacity: 0;
    transition: opacity var(--ease);
    pointer-events: none;
}
.post-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(58,168,192,0.15), 0 0 60px rgba(58,168,192,0.08);
    border-color: var(--sky-light);
}
.post-card:hover::before { opacity: 1; }

.post-card-accent { height: 4px; background: linear-gradient(90deg, var(--sage), var(--sky), var(--gold-light)); }
.post-card-featured .post-card-accent { height: 5px; }

.post-card-body { padding: var(--sp-md); flex: 1; display: flex; flex-direction: column; }

/* Tags */
.post-meta { display: flex; align-items: center; gap: 0.65rem; margin-bottom: 0.85rem; flex-wrap: wrap; }

.post-tag {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: var(--r-sm);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: lowercase;
}
/* Tech tags */
.tag-spring   { background: var(--sage-pale);  color: var(--sage-dark); border: 1px solid var(--sage-light); }
.tag-aws      { background: var(--gold-pale);   color: #5a4808;          border: 1px solid var(--gold-light); }
.tag-security { background: var(--sky-pale);    color: var(--sage-dark); border: 1px solid var(--sky-light);  }
.tag-devops   { background: var(--rose-pale);   color: var(--text-mid);  border: 1px solid var(--sky-light);  }
.tag-java     { background: var(--gold-pale);   color: #5a4808;          border: 1px solid var(--gold-light); }
.tag-tdd      { background: var(--mint);        color: var(--sage-dark); border: 1px solid var(--sage-light); }
.tag-db       { background: var(--sky-pale);    color: var(--sage-dark); border: 1px solid var(--sky-light);  }
/* Personal/hobby tags */
.tag-aviation { background: #e8f4ff;  color: #1a4a7a; border: 1px solid #90c4f0; }
.tag-xplane   { background: #e8f0ff;  color: #2a3a8a; border: 1px solid #9090e8; }
.tag-hardware { background: var(--gold-pale);   color: #5a4808; border: 1px solid var(--gold-light); }
.tag-satellites { background: #f0e8ff; color: #4a1a7a; border: 1px solid #b890e8; }
.tag-hobby    { background: var(--sage-pale);  color: var(--sage-dark); border: 1px solid var(--sage-light); }
.tag-review   { background: #fff0e8;  color: #7a3a10; border: 1px solid #e8a070; }
.tag-life     { background: var(--sky-pale);   color: var(--sage-dark); border: 1px solid var(--sky-light);  }

/* Dark mode tag adjustments */
body:has(#dark-mode-toggle:checked) .tag-aviation   { background: rgba(26,74,122,0.3);  color: #70b8f0; border-color: rgba(144,196,240,0.3); }
body:has(#dark-mode-toggle:checked) .tag-xplane     { background: rgba(42,58,138,0.3);  color: #9090f8; border-color: rgba(144,144,232,0.3); }
body:has(#dark-mode-toggle:checked) .tag-satellites { background: rgba(74,26,122,0.3);  color: #c090f8; border-color: rgba(184,144,232,0.3); }
body:has(#dark-mode-toggle:checked) .tag-review     { background: rgba(122,58,16,0.3);  color: #f0a070; border-color: rgba(232,160,112,0.3); }

.post-date-read {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    margin-left: auto;
    white-space: nowrap;
}

.post-card h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.65rem;
    letter-spacing: -0.01em;
    line-height: 1.35;
}
.post-card-featured h2 { font-size: 1.48rem; }

.post-card p {
    font-size: 0.9rem;
    color: var(--text-mid);
    line-height: 1.75;
    flex: 1;
    margin-bottom: 1.25rem;
}

.post-read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--sky);
    text-decoration: none;
    transition: gap var(--ease), color var(--ease);
    margin-top: auto;
}
.post-card:hover .post-read-more { gap: 0.7rem; color: var(--sage-dark); }

/* Coming soon card */
.coming-soon-card {
    background: var(--cream);
    border: 2px dashed rgba(58,140,128,0.2);
    border-radius: var(--r-xl);
    padding: var(--sp-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-height: 220px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-align: center;
}
.coming-soon-icon { font-size: 2rem; opacity: 0.5; }

/* ============================================================
   ARTICLE PAGE — header
   ============================================================ */
.article-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: var(--sp-md);
    transition: color var(--ease);
}
.article-back:hover { color: var(--sky); }

.article-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.2rem; }

.article-title {
    font-size: clamp(2rem, 4.5vw, 3.2rem);
    font-weight: 700;
    color: #e8f4ff;
    letter-spacing: -0.025em;
    line-height: 1.1;
    margin-bottom: 1.2rem;
    max-width: 800px;
    text-shadow: 0 0 25px rgba(58,168,192,0.25);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}
.article-meta-item { display: flex; align-items: center; gap: 0.4rem; }

/* ============================================================
   ARTICLE BODY — prose
   ============================================================ */
.article-body {
    padding: var(--sp-xl) 0;
    background: var(--warm-white);
}

.prose {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--sp-md);
}

.prose h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: var(--sp-lg);
    margin-bottom: var(--sp-sm);
    letter-spacing: -0.02em;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--sky-pale);
}

.prose h3 {
    font-size: 1.18rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-top: var(--sp-md);
    margin-bottom: 0.75rem;
}

.prose p {
    font-size: 1rem;
    color: var(--text-mid);
    line-height: 1.85;
    margin-bottom: var(--sp-sm);
}

/* Lists */
.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: var(--sp-sm); }
.prose ul { list-style: none; }
.prose ul li { position: relative; padding-left: 1.2rem; margin-bottom: 0.5rem; color: var(--text-mid); line-height: 1.8; }
.prose ul li::before { content: '→'; position: absolute; left: 0; color: var(--sky); font-family: var(--font-mono); font-size: 0.85rem; }
.prose ol { list-style: decimal; }
.prose ol li { margin-bottom: 0.5rem; color: var(--text-mid); line-height: 1.8; }

.prose strong { color: var(--text-dark); font-weight: 600; }
.prose em     { color: var(--sage-dark); font-style: italic; }
.prose a      { color: var(--sky); text-decoration: underline; text-underline-offset: 3px; transition: color var(--ease); }
.prose a:hover { color: var(--sage-dark); }

/* Inline code */
.prose code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--sky-pale);
    color: var(--sage-dark);
    border-radius: var(--r-sm);
    padding: 0.15em 0.45em;
    border: 1px solid var(--sky-light);
}

/* Code block wrapper */
.code-block {
    margin: var(--sp-md) 0;
    border-radius: var(--r-lg);
    overflow: hidden;
    border: 1px solid rgba(58,140,128,0.2);
    box-shadow: var(--shadow-md);
}

.code-block-header {
    background: #0f2234;
    padding: 0.6rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid rgba(58,168,192,0.15);
}

.code-lang     { font-family: var(--font-mono); font-size: 0.68rem; color: var(--sky-light); text-transform: lowercase; letter-spacing: 0.06em; }
.code-filename { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); margin-left: auto; }

.code-block pre {
    background: var(--forest);
    margin: 0;
    padding: var(--sp-md);
    overflow-x: auto;
    border-left: 3px solid var(--sky);
}

.code-block pre code {
    font-family: var(--font-mono);
    font-size: 0.84rem;
    background: none;
    color: #a8e0d8;
    border: none;
    padding: 0;
    line-height: 1.65;
}

/* Callout boxes */
.callout {
    background: var(--sky-pale);
    border-left: 3px solid var(--sky);
    border-radius: 0 var(--r-md) var(--r-md) 0;
    padding: var(--sp-sm) var(--sp-md);
    margin: var(--sp-md) 0;
}
.callout-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--sky);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.4rem;
}
.callout p { margin-bottom: 0; font-size: 0.94rem; }

.callout-warning { background: var(--gold-pale); border-left-color: var(--gold); }
.callout-warning .callout-title { color: var(--gold); }

.prose-divider { border: none; border-top: 1px solid var(--sage-pale); margin: var(--sp-lg) 0; }

/* ============================================================
   AUTHOR CARD
   ============================================================ */
.author-card {
    background: var(--cream);
    border-radius: var(--r-xl);
    border: 1px solid rgba(58,140,128,0.15);
    border-left: 3px solid var(--sky);
    padding: var(--sp-md);
    display: flex;
    align-items: flex-start;
    gap: var(--sp-md);
    margin-top: var(--sp-xl);
}

.author-img {
    width: 72px; height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--sky-pale);
    flex-shrink: 0;
}

.author-info { flex: 1; }
.author-name { font-family: var(--font-display); font-size: 1.05rem; font-weight: 600; color: var(--text-dark); margin-bottom: 0.2rem; }
.author-role { font-family: var(--font-mono); font-size: 0.72rem; color: var(--sky); margin-bottom: 0.5rem; }
.author-bio  { font-size: 0.88rem; color: var(--text-mid); line-height: 1.7; margin-bottom: 0; }

.author-links { display: flex; gap: 0.5rem; margin-top: 0.85rem; flex-wrap: wrap; }
.author-link {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    background: var(--sky-pale);
    border: 1px solid var(--sky-light);
    border-radius: var(--r-sm);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--sage-dark);
    text-decoration: none;
    transition: all var(--ease);
}
.author-link:hover { background: var(--sage-pale); border-color: var(--sage-light); }

/* ============================================================
   FOOTER
   ============================================================ */
.blog-footer {
    background: var(--forest);
    padding: var(--sp-md);
    text-align: center;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.76rem;
    letter-spacing: 0.01em;
    border-top: 1px solid rgba(58,140,128,0.2);
}
.blog-footer a { color: var(--sky-light); text-decoration: none; transition: color var(--ease); }
.blog-footer a:hover { color: #aef0f0; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes blinkDot {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .posts-grid { grid-template-columns: 1fr 1fr; }
    .post-card-featured { grid-column: span 2; }
}

@media (max-width: 768px) {
    .posts-grid { grid-template-columns: 1fr; }
    .post-card-featured { grid-column: span 1; }
    .nav-links { display: none; }
    .nav-actions { padding-left: 0.5rem; }
    .author-card { flex-direction: column; }
}

@media (max-width: 480px) {
    :root { --sp-md: 1.5rem; --sp-lg: 3rem; --sp-xl: 4.5rem; --sp-2xl: 6rem; }
}

/* ============================================================
   DARK MODE
   ============================================================ */
body:has(#dark-mode-toggle:checked) {
    --cream:       #0c1a26;
    --warm-white:  #0f2234;
    --forest:      #05101a;
    --sage:        #3aaa9a;
    --sage-light:  #2a8a7a;
    --sage-pale:   #0d2a28;
    --sage-dark:   #6ad8cc;
    --mint:        #0d2a28;
    --gold:        #c8b840;
    --gold-light:  #dece40;
    --gold-pale:   #1c1c04;
    --sky:         #30d0f0;
    --sky-light:   #28a8c8;
    --sky-pale:    #061e30;
    --rose:        #40b8d0;
    --rose-pale:   #061820;
    --text-dark:   #d8f0ec;
    --text-mid:    #8ec8c4;
    --text-light:  #5a9898;
    --text-muted:  #2e7878;
    --shadow-sm:   0 2px 8px  rgba(0,0,0,0.4);
    --shadow-md:   0 8px 24px rgba(0,0,0,0.5);
    --shadow-lg:   0 16px 48px rgba(0,0,0,0.6);
}

body:has(#dark-mode-toggle:checked) .navbar {
    background: rgba(8,16,28,0.97);
    border-bottom-color: rgba(58,168,192,0.2);
}
/* Dark mode star field brighter */
body:has(#dark-mode-toggle:checked)::before {
    background-image:
        radial-gradient(1.5px 1.5px at 20% 30%, rgba(180,220,240,0.4), transparent),
        radial-gradient(1px 1px at 60% 70%, rgba(180,220,240,0.35), transparent),
        radial-gradient(1.5px 1.5px at 50% 50%, rgba(220,200,100,0.3), transparent),
        radial-gradient(1px 1px at 80% 10%, rgba(180,220,240,0.38), transparent),
        radial-gradient(1.5px 1.5px at 90% 60%, rgba(180,220,240,0.32), transparent),
        radial-gradient(1px 1px at 33% 85%, rgba(220,200,100,0.35), transparent),
        radial-gradient(1px 1px at 75% 40%, rgba(180,220,240,0.3), transparent),
        radial-gradient(1.5px 1.5px at 15% 65%, rgba(180,220,240,0.4), transparent),
        radial-gradient(2px 2px at 45% 20%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1.5px 1.5px at 25% 95%, rgba(255,255,255,0.5), transparent);
    opacity: 1;
}

/* Page header in dark mode - deep space */
body:has(#dark-mode-toggle:checked) .page-header {
    background: linear-gradient(135deg, #020510 0%, #0a1525 50%, #050d1a 100%);
}
body:has(#dark-mode-toggle:checked) .nav-actions {
    border-left-color: rgba(58,168,192,0.2);
}
body:has(#dark-mode-toggle:checked) .dark-mode-btn {
    border-color: rgba(58,168,192,0.3);
    color: var(--sky);
}
body:has(#dark-mode-toggle:checked) .post-card {
    border-color: rgba(58,168,192,0.16);
}
body:has(#dark-mode-toggle:checked) .post-card:hover {
    border-color: rgba(58,168,192,0.42);
}
body:has(#dark-mode-toggle:checked) .author-card {
    border-color: rgba(58,168,192,0.16);
    border-left-color: var(--sky);
}
body:has(#dark-mode-toggle:checked) .code-block {
    border-color: rgba(58,168,192,0.2);
}
body:has(#dark-mode-toggle:checked) .callout {
    background: rgba(6,30,48,0.85);
}
body:has(#dark-mode-toggle:checked) .prose code {
    background: rgba(6,30,48,0.85);
    border-color: rgba(58,168,192,0.2);
    color: var(--sky-light);
}
body:has(#dark-mode-toggle:checked) .dm-sun  { display: none; }
body:has(#dark-mode-toggle:checked) .dm-moon { display: block; }