/* --- CORE VARIABLES (matches homepage) --- */
:root {
    --bg-color: #0a0a0a;
    --card-bg: #161616;
    --text-main: #e0e0e0;
    --text-muted: #888;
    --accent: #00ff9d;
    --accent-glow: rgba(0, 255, 157, 0.2);
    --secondary: #7000ff;
    --font-main: "Inter", sans-serif;
    --font-mono: "Fira Code", monospace;
}

/* --- RESET & BASE --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

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

a { text-decoration: none; color: inherit; transition: 0.3s; }

/* --- SCANLINE TEXTURE --- */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 999;
}

/* --- UTILITIES --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }

/* --- NAVIGATION --- */
nav {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    border: 1px solid var(--text-muted);
    padding: 5px 10px;
    border-radius: 4px;
}

.nav-links a {
    margin-left: 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

/* --- POST HEADER --- */
.post-header {
    padding: 70px 0 50px;
    border-bottom: 1px solid #222;
    margin-bottom: 60px;
}

.breadcrumb {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: #333; }

.post-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    background: rgba(0, 255, 157, 0.05);
    border: 1px solid rgba(0, 255, 157, 0.15);
    padding: 3px 10px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 20px;
}

.post-title {
    font-size: 3rem;
    font-family: var(--font-mono);
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.post-title .accent { text-shadow: 0 0 30px var(--accent-glow); }

.post-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 680px;
    margin-bottom: 30px;
}

.post-meta {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #555;
    display: flex;
    gap: 24px;
    align-items: center;
}

.post-meta span { display: flex; align-items: center; gap: 6px; }
.post-meta .dot { color: #333; }

/* --- LAYOUT: article + sidebar --- */
.post-layout {
    display: grid;
    grid-template-columns: 1fr 240px;
    gap: 60px;
    align-items: start;
    margin-bottom: 100px;
}

/* --- TABLE OF CONTENTS --- */
.toc {
    position: sticky;
    top: 30px;
    background: var(--card-bg);
    border: 1px solid #222;
    border-left: 2px solid var(--accent);
    border-radius: 6px;
    padding: 20px;
}

.toc-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 14px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.toc ol { list-style: none; counter-reset: toc; }

.toc li {
    counter-increment: toc;
    margin-bottom: 8px;
    position: relative;
}

.toc li::before {
    content: counter(toc, decimal-leading-zero) ".";
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-right: 6px;
}

.toc a {
    font-size: 0.82rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

.toc a:hover { color: var(--accent); }
.toc li.active a { color: var(--accent); }

/* --- ARTICLE BODY --- */
article h2 {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    color: var(--text-main);
    margin: 50px 0 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid #222;
    display: flex;
    align-items: center;
    gap: 10px;
}

article h2::before {
    content: '##';
    color: var(--accent);
    font-size: 0.9rem;
    opacity: 0.7;
}

article h3 {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    color: var(--text-main);
    margin: 30px 0 12px;
}

article h3::before { content: '> '; color: var(--secondary); }

article p {
    color: var(--text-muted);
    font-size: 0.97rem;
    margin-bottom: 18px;
    max-width: 70ch;
}

article strong { color: var(--text-main); font-weight: 700; }

article a {
    color: var(--accent);
    border-bottom: 1px solid rgba(0, 255, 157, 0.2);
}

article a:hover { border-color: var(--accent); }

/* --- CODE BLOCKS --- */
.code-block {
    background: #0d0d0d;
    border: 1px solid #1e1e1e;
    border-left: 3px solid var(--accent);
    border-radius: 6px;
    margin: 24px 0;
    overflow: hidden;
}

.code-header {
    background: #111;
    border-bottom: 1px solid #1e1e1e;
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-lang {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.code-filename {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: #444;
}

.code-block pre { padding: 20px; overflow-x: auto; }

.code-block code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    color: #cdd6f4;
}

/* Syntax coloring */
.kw  { color: #cba6f7; } /* keywords   */
.fn  { color: #89b4fa; } /* functions  */
.str { color: #a6e3a1; } /* strings    */
.cm  { color: #45475a; } /* comments   */
.num { color: #fab387; } /* numbers    */
.op  { color: #89dceb; } /* operators  */
.var { color: #f38ba8; } /* variables  */

/* --- INLINE CODE --- */
code:not(.code-block code) {
    font-family: var(--font-mono);
    font-size: 0.85em;
    color: var(--accent);
    background: rgba(0, 255, 157, 0.06);
    border: 1px solid rgba(0, 255, 157, 0.12);
    padding: 1px 6px;
    border-radius: 3px;
}

/* --- CALLOUT BOXES --- */
.callout {
    padding: 16px 20px;
    border-radius: 6px;
    margin: 24px 0;
    font-size: 0.9rem;
}

.callout.info  { background: rgba(0, 255, 157, 0.04); border-left: 3px solid var(--accent); }
.callout.warn  { background: rgba(255, 165, 0, 0.04); border-left: 3px solid #ffa500; }
.callout.flag  { background: rgba(112, 0, 255, 0.06); border-left: 3px solid var(--secondary); }

.callout-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 6px;
}

.callout.info .callout-label { color: var(--accent); }
.callout.warn .callout-label { color: #ffa500; }
.callout.flag .callout-label { color: var(--secondary); }

.callout p { margin: 0; color: var(--text-muted); }

/* --- TOOL TABLE --- */
.tool-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.88rem;
}

.tool-table th {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    text-align: left;
    padding: 10px 14px;
    border-bottom: 1px solid var(--accent);
    background: rgba(0, 255, 157, 0.03);
}

.tool-table td {
    padding: 10px 14px;
    border-bottom: 1px solid #1a1a1a;
    color: var(--text-muted);
}

.tool-table tr:hover td { background: rgba(255, 255, 255, 0.02); }
.tool-table td:first-child { font-family: var(--font-mono); color: var(--text-main); }

/* --- SECTION DIVIDER --- */
.section-divider {
    border: none;
    border-top: 1px solid #1a1a1a;
    margin: 40px 0;
}

/* --- POST NAV --- */
.post-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 0;
    border-top: 1px solid #222;
    margin-bottom: 60px;
}

.post-nav a {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.2s;
}

.post-nav a:hover { color: var(--accent); }

/* --- FOOTER --- */
footer {
    border-top: 1px solid #222;
    padding: 40px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.socials a { margin: 0 10px; }
.socials a:hover { color: var(--accent); }

/* --- MOBILE --- */
@media (max-width: 900px) {
    .post-layout { grid-template-columns: 1fr; }
    .toc { display: none; }
    .post-title { font-size: 2rem; }
}

@media (max-width: 768px) {
    .post-title { font-size: 1.7rem; }
}