/* Blog-specific styles inspired by main.css */
:root {
    --bg-color: #fcfcfc;
    --text-main: #2c3e50;
    --text-light: #596876;
    --accent-color: #2c5282;
    --border-color: #eaeaea;
    --card-bg: #ffffff;
    --font-serif: "Georgia", "Times New Roman", serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.7;
    margin: 0 auto;
    padding: 0 2rem 4rem 2rem;
    max-width: 1000px;
    border-top: 6px solid var(--accent-color);
}

/* Home layout helpers */
.home-grid { display: grid; grid-template-columns: 1fr 300px; gap: 2rem; align-items: start; }
@media (max-width: 900px) { .home-grid { grid-template-columns: 1fr; } }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }

/* Header / hero tweaks */
.role { font-family: var(--font-mono); color: var(--text-light); margin-bottom: 1rem; letter-spacing: 0.5px; text-transform: uppercase; }
.mission-statement { font-size: 1.05rem; color: #34495e; max-width: 680px; padding-left: 1.25rem; border-left: 3px solid #cbd5e0; font-style: italic; font-family: var(--font-serif); }

/* Sidebar tag list: constrain height and enable internal scrolling so card doesn't grow too tall */
aside .card:first-of-type > div {
    max-height: 260px;
    overflow-y: auto;
    padding-right: 6px; /* avoid clipping tags under scrollbar */
}
aside .card:first-of-type > div::-webkit-scrollbar { width: 10px; }
aside .card:first-of-type > div::-webkit-scrollbar-thumb { background: rgba(44,82,130,0.12); border-radius: 6px; }
@media (max-width: 900px) {
    aside .card:first-of-type > div { max-height: none; overflow: visible; padding-right: 0; }
}

/* NAVIGATION BAR (Sticky Glass) */
.structure-nav {
    position: sticky;
    top: 0;
    background: rgba(252, 252, 252, 0.95);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 0.8rem 0;
    margin-bottom: 2rem;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

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

/* .nav-logo { font-family: var(--font-serif); font-weight: 700; color: var(--text-main); font-size: 1.1rem; } */

.nav-logo {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--text-main);
    font-size: 1.1rem;
    letter-spacing: -0.5px;
}

a.nav-logo { 
    text-decoration: none; 
    border-bottom: 1px solid transparent; 
    transition: all 0.2s ease; 
}
a.nav-logo:hover { border-bottom-color: var(--accent-color); opacity: 0.8; }

a { 
    color: var(--accent-color); 
    text-decoration: none; 
    border-bottom: 1px solid transparent; 
    transition: all 0.2s ease; 
}
a:hover { border-bottom-color: var(--accent-color); opacity: 0.8; }

.nav-links { display:flex; gap:1rem; }
.nav-links a { font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; text-decoration:none; }
.nav-links a:hover { color: var(--accent-color); }

/* Blog layout */
main { max-width: 960px; margin: 0 auto; padding: 1rem 1.5rem 3rem; }
.blog-article { padding: 2rem; border-radius: 4px; background: var(--card-bg); border: 1px solid var(--border-color); box-shadow: 0 4px 12px rgba(28,40,60,0.03); }
.blog-article header { margin-bottom: 1rem; }
.blog-article .card-title { font-size: 2rem; color: var(--text-main); margin-bottom: 0.25rem; font-family: var(--font-serif); }
.blog-article .meta-info { color: var(--text-light); font-size: 0.9rem; margin-bottom: 1rem; font-family: var(--font-mono); }

.article-content p { margin-bottom: 1rem; color: #34495e; line-height:1.8; }
.article-content h2 { margin-top: 1.5rem; margin-bottom: 0.75rem; font-size: 1.25rem; font-family: var(--font-serif); }

/* Equation styling — provide spacing for display math */
.equation { text-align: center; margin: 1rem 0; }
.katex { font-size: 1.05rem; }

/* Make long equations scroll horizontally when they overflow the container.
   Keeps touch scrolling smooth on mobile. */
.equation {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0.5rem 0.6rem;
    background-color: rgba(44, 62, 80, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(44,62,80,0.04);
    display: flex;
    justify-content: center;
    /* align-items: center; */
    flex-direction: column;
}

/* Prevent KaTeX display blocks from wrapping so the user can scroll long expressions. */
.equation .katex-display,
.equation .katex {
    display: inline-block;
    white-space: nowrap;
}

/* Ensure embedded SVGs and images scale but allow horizontal scrolling when needed. */
.equation svg,
.equation img {
    max-width: none;
    height: auto;
    display: block;
}

/* Headings and typographic accents */
h1, h2, h3 { font-family: var(--font-serif); font-weight: 700; color: #1a202c; }
h1 { font-size: 2.5rem; letter-spacing: -0.5px; margin-bottom: 0.25rem; line-height: 1.2; }
h2 { font-size: 1.4rem; margin-top: 2.5rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--border-color); display:flex; align-items:center; }
h2::before { content: ""; display:inline-block; width:8px; height:8px; background:var(--accent-color); margin-right:12px; opacity:0.85; }

/* Card & common components (copied/trimmed from main.css to keep blog standalone) */
.card { background: var(--card-bg); border: 1px solid var(--border-color); padding: 1.75rem; border-radius: 2px; box-shadow: 0 2px 4px rgba(0,0,0,0.02); display:flex; flex-direction:column; }
.card-header { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:0.75rem; gap:0.5rem; }
.card-title { font-weight:700; font-size:1.1rem; }
.meta-info { font-family: var(--font-mono); font-size:0.8rem; color:var(--text-light); margin-bottom:1rem; }

.card-spine { position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--accent-color); }

.abstract-box, .achievements-box { background: #f8f9fa; border-left: 2px solid #cbd5e0; padding: 1rem 1.25rem; font-family: var(--font-serif); font-size: 0.95rem; color: #4a5568; margin: 1rem 0; }
.achievements-box ul { margin-bottom: 0; }

.btn { display:inline-block; background:transparent; color:var(--accent-color); padding:8px 16px; border-radius:4px; font-size:0.85rem; border:1px solid var(--accent-color); margin-top:auto; font-family:var(--font-mono); font-weight:500; text-align:center; text-decoration:none; }
.btn:hover { background:var(--accent-color); color:#fff; }

/* Code blocks */
pre { background: #0f1724; color: #e6eef7; padding: 0.9rem 1rem; border-radius: 6px; overflow:auto; font-family: var(--font-mono); font-size:0.95rem; }
code { background: rgba(15,23,36,0.04); padding: 0.15rem 0.3rem; border-radius:4px; }

footer { margin-top: 2.5rem; border-top: 1px solid var(--border-color); padding-top: 1.25rem; color: var(--text-light); font-size:0.9rem; font-family:var(--font-mono); display:flex; justify-content:space-between; }

.tag { 
    font-family: var(--font-mono); 
    font-size: 0.75rem; 
    background: #edf2f7; 
    padding: 4px 8px; 
    border-radius: 4px; 
    color: #4a5568;
    margin-right: 6px;
    display: inline-block;
    margin-top: 0.5rem;
    text-decoration: none;
}

.tag:hover {
    background: #e2e8f0;
    color: #2c5282;
}


ul { list-style-type: disc; padding-left: 1.5rem; margin-bottom: 1rem; }

/* Responsive */
@media (max-width:650px) {
    body { padding: 0 1rem 3rem 1rem; border-top-width:4px; }
    .nav-logo { display:none; }
    .nav-content { justify-content:center; }
    main { padding: 1rem; }
    .blog-article { padding:1rem; }
    .blog-article .card-title { font-size:1.4rem; }
    footer { flex-direction:column; gap:1rem; text-align:left; }

    /* Improve touch targets and spacing on small devices */
    .nav-links { gap:0.6rem; }
    .nav-links a { padding: 8px 6px; }
    .btn { padding: 10px 14px; font-size:0.95rem; }
}