/* ============================================
   Variables & Reset (shared with rodolfo.dev)
   ============================================ */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #1a1a24;
    --bg-card: #13131d;
    --bg-card-hover: #1a1a28;

    --accent-primary: #00e87b;
    --accent-secondary: #00c9ff;
    --accent-tertiary: #7c5cfc;
    --accent-glow: rgba(0, 232, 123, 0.15);
    --accent-glow-strong: rgba(0, 232, 123, 0.3);

    --text-primary: #e8e8ef;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --text-accent: #00e87b;

    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-accent: rgba(0, 232, 123, 0.2);

    --font-display: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(ellipse 800px 600px at 20% 10%, rgba(0, 232, 123, 0.04), transparent),
        radial-gradient(ellipse 600px 400px at 80% 50%, rgba(124, 92, 252, 0.03), transparent);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.02'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================
   Layout
   ============================================ */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ============================================
   Navigation
   ============================================ */
nav {
    position: fixed;
    inset: 0 0 auto;
    z-index: 100;
    padding: 16px 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

nav .container { display: flex; align-items: center; justify-content: space-between; }

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-logo span { color: var(--accent-primary); }

.nav-links { display: flex; gap: 32px; list-style: none; }

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
    letter-spacing: 0.02em;
}

.nav-links a:hover, .nav-links a.active { color: var(--accent-primary); }

.nav-cta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 8px 20px;
    background: transparent;
    color: var(--accent-primary) !important;
    border: 1px solid var(--border-accent);
    border-radius: 6px;
    transition: var(--transition-fast);
}

.nav-cta:hover { background: var(--accent-glow); border-color: var(--accent-primary); }

.mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.mobile-toggle span { display: block; width: 20px; height: 2px; background: var(--text-secondary); margin: 4px 0; transition: var(--transition-fast); }

/* ============================================
   Tags
   ============================================ */
.tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 4px;
    background: rgba(0, 232, 123, 0.08);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 232, 123, 0.15);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tag:hover { background: rgba(0, 232, 123, 0.15); border-color: rgba(0, 232, 123, 0.3); }
.tag.active { background: var(--accent-primary); color: var(--bg-primary); border-color: var(--accent-primary); }

/* ============================================
   Sidebar (shared)
   ============================================ */
.sidebar {
    position: sticky;
    top: 90px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-box {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 24px;
}

.sidebar-box h3 {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
}

.sidebar-tags { display: flex; gap: 8px; flex-wrap: wrap; }

/* ============================================
   Footer
   ============================================ */
footer { border-top: 1px solid var(--border-subtle); padding: 40px 0; }
footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-left { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 24px; list-style: none; }
.footer-links a { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); text-decoration: none; transition: var(--transition-fast); }
.footer-links a:hover { color: var(--accent-primary); }

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

.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }
.stagger-5 { transition-delay: 0.25s; }

/* ============================================
   Blog Listing
   ============================================ */
.blog-header { padding-top: 120px; padding-bottom: 48px; }
.blog-header h1 { font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 700; margin-bottom: 12px; letter-spacing: -0.03em; }
.blog-header p { color: var(--text-secondary); font-size: 1.05rem; max-width: 500px; }

.blog-grid { display: grid; grid-template-columns: 1fr 280px; gap: 40px; align-items: start; padding-bottom: 100px; }

.articles { display: flex; flex-direction: column; gap: 20px; }

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 28px 32px;
    transition: all var(--transition-smooth);
    text-decoration: none;
    display: block;
}

.article-card:hover { background: var(--bg-card-hover); border-color: var(--border-accent); box-shadow: 0 0 24px rgba(0, 232, 123, 0.05); transform: translateY(-2px); }
.article-card.hidden { display: none; }
.article-card h2 { font-size: 1.2rem; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; transition: color var(--transition-fast); letter-spacing: -0.01em; }
.article-card:hover h2 { color: var(--accent-primary); }

.article-meta { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.article-meta .sep { color: var(--border-subtle); }

.article-summary { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; margin-bottom: 16px; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; }

.search-input {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.85rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { border-color: var(--accent-primary); box-shadow: 0 0 0 2px rgba(0, 232, 123, 0.1); }

.source-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.82rem;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.source-item:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.source-item.active { background: var(--accent-glow); color: var(--accent-primary); border-color: var(--border-accent); }
.source-count { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); background: var(--bg-tertiary); padding: 2px 8px; border-radius: 10px; }
.source-item.active .source-count { background: rgba(0, 232, 123, 0.15); color: var(--accent-primary); }

.filter-active { display: none; align-items: center; justify-content: space-between; padding: 10px 14px; background: var(--accent-glow); border: 1px solid var(--border-accent); border-radius: 8px; margin-bottom: 16px; font-size: 0.82rem; color: var(--accent-primary); }
.filter-active.visible { display: flex; }
.filter-clear { background: none; border: none; color: var(--text-muted); cursor: pointer; font-family: var(--font-mono); font-size: 0.75rem; transition: color var(--transition-fast); }
.filter-clear:hover { color: var(--text-primary); }

.stats-row { display: flex; gap: 12px; }
.stat-item { flex: 1; text-align: center; padding: 12px 8px; background: var(--bg-tertiary); border-radius: 8px; }
.stat-number { font-family: var(--font-mono); font-size: 1.2rem; font-weight: 700; color: var(--accent-primary); display: block; }
.stat-label { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

.no-results { text-align: center; padding: 48px 0; color: var(--text-muted); display: none; }
.no-results.visible { display: block; }
.empty-state { text-align: center; padding: 80px 0; color: var(--text-muted); }

/* ============================================
   Post Page
   ============================================ */
.post-top { padding-top: 120px; padding-bottom: 20px; }
.post-back { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); text-decoration: none; display: inline-block; margin-bottom: 28px; transition: color var(--transition-fast); }
.post-back:hover { color: var(--accent-primary); }
.post-title { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1.2; margin-bottom: 16px; }
.post-meta { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.post-meta .sep { color: var(--border-subtle); }
.post-meta a { color: var(--accent-secondary); text-decoration: none; transition: color var(--transition-fast); }
.post-meta a:hover { color: #33d4ff; }
.post-tags-inline { display: flex; gap: 8px; flex-wrap: wrap; }

.post-grid { display: grid; grid-template-columns: 1fr 300px; gap: 40px; align-items: start; padding-bottom: 100px; }

.post-body { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 12px; padding: 40px 48px; }
.post-body h2 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; color: var(--text-primary); margin-top: 2em; margin-bottom: 0.6em; letter-spacing: -0.01em; }
.post-body h2:first-child { margin-top: 0; }
.post-body h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; color: var(--text-primary); margin-top: 1.5em; margin-bottom: 0.5em; }
.post-body p { color: var(--text-secondary); font-size: 1rem; line-height: 1.85; margin-bottom: 1.2em; }
.post-body a { color: var(--accent-primary); text-decoration: underline; text-decoration-color: rgba(0, 232, 123, 0.3); text-underline-offset: 3px; transition: text-decoration-color var(--transition-fast); }
.post-body a:hover { text-decoration-color: var(--accent-primary); }
.post-body strong { color: var(--text-primary); font-weight: 600; }
.post-body em { color: var(--text-secondary); font-style: italic; }
.post-body ul, .post-body ol { color: var(--text-secondary); padding-left: 1.5em; margin-bottom: 1.2em; line-height: 1.85; }
.post-body li { margin-bottom: 0.4em; }
.post-body blockquote { border-left: 3px solid var(--accent-primary); padding-left: 20px; margin: 1.5em 0; color: var(--text-secondary); font-style: italic; }
.post-body code { font-family: var(--font-mono); font-size: 0.85em; background: var(--bg-tertiary); padding: 2px 6px; border-radius: 4px; color: var(--accent-secondary); }

.source-link { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--bg-tertiary); border-radius: 8px; text-decoration: none; transition: all var(--transition-fast); border: 1px solid transparent; }
.source-link:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }
.source-icon { width: 32px; height: 32px; border-radius: 6px; background: var(--accent-glow); display: flex; align-items: center; justify-content: center; font-size: 0.9rem; flex-shrink: 0; }
.source-info { display: flex; flex-direction: column; min-width: 0; }
.source-name { font-size: 0.85rem; font-weight: 500; color: var(--text-primary); }
.source-label { font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-muted); }

.related-list { display: flex; flex-direction: column; gap: 12px; }
.related-item { display: block; text-decoration: none; padding: 12px 14px; background: var(--bg-tertiary); border-radius: 8px; transition: all var(--transition-fast); border: 1px solid transparent; }
.related-item:hover { border-color: var(--border-accent); background: var(--bg-card-hover); }
.related-item h4 { font-size: 0.85rem; font-weight: 500; color: var(--text-primary); margin-bottom: 4px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-item .related-meta { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); }

.share-links { display: flex; gap: 8px; }
.share-btn { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 8px; background: var(--bg-tertiary); border: 1px solid var(--border-subtle); color: var(--text-secondary); text-decoration: none; font-size: 0.85rem; transition: all var(--transition-fast); cursor: pointer; }
.share-btn:hover { border-color: var(--border-accent); color: var(--accent-primary); background: var(--accent-glow); }

.loading { text-align: center; padding: 60px 0; color: var(--text-muted); }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
    .blog-grid, .post-grid { grid-template-columns: 1fr; }
    .sidebar { position: static; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .nav-links.open {
        display: flex; flex-direction: column;
        position: absolute; top: 100%; left: 0; right: 0;
        background: rgba(10, 10, 15, 0.95); backdrop-filter: blur(20px);
        padding: 24px; gap: 16px;
        border-bottom: 1px solid var(--border-subtle);
    }
    .article-card { padding: 20px 24px; }
    .blog-header { padding-top: 100px; padding-bottom: 32px; }
    .post-top { padding-top: 100px; }
    .post-body { padding: 28px 24px; }
}