:root {
    --bg: #ffffff;
    --bg-alt: #f8f8f7;
    --surface: #f1f0ee;
    --border: rgba(0,0,0,0.08);
    --border-mid: rgba(0,0,0,0.14);
    --text: #1a1a1a;
    --text-muted: #666;
    --text-dim: #999;
    --icon: #1a1a1a;
    --badge-bg: #e8f0fe;
    --badge-color: #1a56db;
    --font-serif: 'DM Serif Display', Georgia, serif;
    --font-mono: 'DM Mono', monospace;
    --nav-h: 52px;
    --max-w: 900px;
}
[data-theme="dark"] {
    --bg: #0f0f0f;
    --bg-alt: #161616;
    --surface: #1e1e1e;
    --border: rgba(255,255,255,0.08);
    --border-mid: rgba(255,255,255,0.14);
    --text: #eeeeee;
    --text-muted: #888;
    --text-dim: #555;
    --icon: #eeeeee;
    --badge-bg: rgba(26,86,219,0.2);
    --badge-color: #6b9ef0;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font-mono); font-size: 15px; line-height: 1.7; overflow-x: hidden; transition: background 0.2s, color 0.2s; }

.container { max-width: var(--max-w); margin: 0 auto; }

.topnav {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--nav-h);
    background: var(--bg);
    border-bottom: 0.5px solid var(--border);
    display: flex; align-items: center; justify-content: flex-end;
    padding: 0 5%;
    gap: 2rem;
    z-index: 200;
    transition: background 0.2s;
}
.topnav-links { display: flex; gap: 2rem; align-items: center; }
.topnav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
.topnav-links a:hover { color: var(--text); }

.theme-toggle {
    width: 44px; height: 44px;
    border: 2px solid var(--border-mid);
    border-radius: 6px;
    background: none;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    padding: 0;
    flex-shrink: 0;
    transition: background 0.2s;
}
.theme-toggle:hover { background: var(--surface); }
.theme-toggle svg {
    width: 32px; height: 32px;
    min-width: 32px; min-height: 32px;
    display: block;
    stroke: var(--icon);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.hamburger {
    display: none; flex-direction: column; gap: 5px;
    background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span { display: block; width: 20px; height: 1.5px; background: var(--text-muted); transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.drawer {
    position: fixed; top: var(--nav-h); right: -100%;
    width: min(260px, 80vw); height: calc(100vh - var(--nav-h));
    background: var(--bg);
    border-left: 0.5px solid var(--border);
    z-index: 199; display: flex; flex-direction: column;
    padding: 2rem; gap: 1.25rem;
    transition: right 0.3s ease;
}
.drawer.open { right: 0; }
.drawer-link { color: var(--text); text-decoration: none; font-size: 1.2rem; font-family: var(--font-serif); padding-bottom: 1rem; border-bottom: 0.5px solid var(--border); }
.drawer-link:hover { color: var(--text-muted); }
.drawer-overlay { display: none; position: fixed; inset: 0; z-index: 198; background: rgba(0,0,0,0.2); }
.drawer-overlay.visible { display: block; }

.hero-bio { padding: calc(var(--nav-h) + 3rem) 5% 3rem; border-bottom: 0.5px solid var(--border); }
.hero-name { font-family: var(--font-serif); font-size: clamp(1.8rem, 4vw, 2.4rem); color: var(--text); margin-bottom: 0.75rem; line-height: 1.1; }
.bio-text { font-size: 1rem; color: var(--text-muted); line-height: 1.85; max-width: 580px; margin-bottom: 1rem; }
.bio-links { display: flex; gap: 0.5rem; align-items: center; font-size: 0.9rem; }
.bio-links a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.bio-links a:hover { color: var(--text-muted); }
.bio-links span { color: var(--text-dim); }

.content-section { padding: 3rem 5%; border-bottom: 0.5px solid var(--border); background: var(--bg); transition: background 0.2s; }
.content-section.alt { background: var(--bg-alt); }
.section-title { font-family: var(--font-serif); font-size: 1.4rem; color: var(--text); font-weight: 400; margin-bottom: 1.5rem; }

.exp-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--text-dim); margin-bottom: 0.75rem; }
.exp-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.exp-item { padding: 0.85rem 0; border-bottom: 0.5px solid var(--border); }
.exp-item:last-of-type { border-bottom: none; }
.exp-header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 2px; gap: 0.5rem; }
.exp-role { font-size: 0.92rem; font-weight: 500; color: var(--text); }
.exp-date { font-size: 0.75rem; color: var(--text-dim); white-space: nowrap; }
.exp-company { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 0.4rem; }
.exp-bullets { margin-left: 1rem; font-size: 0.82rem; color: var(--text-muted); line-height: 1.7; }
.skills-grid { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.skill-tag { background: var(--surface); border: 0.5px solid var(--border-mid); border-radius: 4px; padding: 0.2rem 0.6rem; font-size: 0.75rem; color: var(--text-muted); }

.project-row { display: grid; grid-template-columns: 1fr auto; gap: 1rem; padding: 1rem 0; border-bottom: 0.5px solid var(--border); align-items: start; }
.project-row:last-child { border-bottom: none; }
.project-row h3 { font-size: 0.92rem; font-weight: 500; color: var(--text); margin-bottom: 0.25rem; }
.project-row p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }
.project-badge { font-size: 0.65rem; background: var(--badge-bg); color: var(--badge-color); padding: 2px 7px; border-radius: 4px; white-space: nowrap; font-weight: 500; margin-top: 3px; }

.writing-block { margin-bottom: 2rem; }
.writing-block:last-child { margin-bottom: 0; }
.writing-cat-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.14em; color: var(--text-dim); margin-bottom: 0.75rem; padding-bottom: 0.5rem; border-bottom: 0.5px solid var(--border); }
.writing-row { display: grid; grid-template-columns: 65px 1fr; gap: 1.25rem; padding: 0.9rem 0; border-bottom: 0.5px solid var(--border); align-items: start; }
.writing-row:last-child { border-bottom: none; }
.w-meta { display: flex; flex-direction: column; gap: 3px; padding-top: 3px; }
.w-rating { font-size: 0.88rem; font-weight: 500; color: var(--text); }
.w-genre { font-size: 0.68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.w-main h4 { font-size: 0.92rem; font-weight: 500; color: var(--text); margin-bottom: 0.2rem; }
.w-main h4 a { color: inherit; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--border-mid); }
.w-main h4 a:hover { color: var(--text-muted); }
.w-main p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

.blog-row { padding: 0.9rem 0; border-bottom: 0.5px solid var(--border); }
.blog-row:last-child { border-bottom: none; }
.blog-tag { display: inline-block; font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--badge-color); background: var(--badge-bg); padding: 2px 7px; border-radius: 4px; margin-bottom: 0.35rem; font-weight: 500; }
.blog-row h4 { font-size: 0.92rem; font-weight: 500; color: var(--text); margin-bottom: 0.2rem; }
.blog-row h4 a { color: inherit; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--border-mid); }
.blog-row h4 a:hover { color: var(--text-muted); }
.blog-row p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }
.blog-date { font-size: 0.7rem; color: var(--text-dim); margin-top: 0.25rem; }

.site-footer { padding: 1.5rem 5%; border-top: 0.5px solid var(--border); background: var(--bg); transition: background 0.2s; }
.site-footer .container { display: flex; gap: 0.6rem; font-size: 0.82rem; color: var(--text-dim); }
.site-footer a { color: var(--text-dim); text-decoration: none; }

/* Single post */
.navbar { position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h); background: var(--bg); border-bottom: 0.5px solid var(--border); display: flex; align-items: center; padding: 0 5%; z-index: 200; transition: background 0.2s; }
.navbar a { color: var(--text-muted); text-decoration: none; font-size: 0.85rem; transition: color 0.2s; }
.navbar a:hover { color: var(--text); }
.content { max-width: 720px; margin: 0 auto; padding: calc(var(--nav-h) + 4rem) 5% 6rem; }
.review-header { margin-bottom: 3rem; padding-bottom: 2rem; border-bottom: 0.5px solid var(--border-mid); }
.book-title, .post-title { font-family: var(--font-serif); font-size: clamp(1.6rem, 3.5vw, 2.2rem); line-height: 1.2; margin-bottom: 0.5rem; }
.book-author { font-family: var(--font-serif); font-style: italic; font-size: 1.1rem; color: var(--text-muted); margin-bottom: 1rem; }
.book-meta { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 1rem; }
.book-meta-item { margin-bottom: 0.3rem; }
.post-meta { color: var(--text-dim); font-size: 0.85rem; margin-top: 0.5rem; }
.rating-number { font-size: 1.8rem; color: var(--text); font-weight: 500; }
.review-content { font-size: 1rem; color: var(--text-muted); line-height: 1.85; }
.review-content p { margin-bottom: 1.5rem; }
.review-content h2 { font-family: var(--font-serif); font-size: 1.5rem; margin: 2.5rem 0 1rem; color: var(--text); }
.review-content h3 { font-family: var(--font-serif); font-size: 1.2rem; margin: 2rem 0 0.75rem; color: var(--text); }
.review-content blockquote { border-left: 2px solid var(--border-mid); padding-left: 1.25rem; margin: 2rem 0; color: var(--text-muted); font-style: italic; }
.review-content ul, .review-content ol { margin-left: 1.5rem; margin-bottom: 1.5rem; }
.review-content li { margin-bottom: 0.4rem; }
.back-link { display: inline-block; margin-top: 3rem; padding: 0.6rem 1.25rem; border: 0.5px solid var(--border-mid); border-radius: 4px; color: var(--text-muted); text-decoration: none; font-size: 0.85rem; transition: all 0.2s; }
.back-link:hover { background: var(--surface); color: var(--text); }

@media (max-width: 700px) {
    .topnav-links { display: none; }
    .hamburger { display: flex; }
    .exp-cols { grid-template-columns: 1fr; gap: 1.5rem; }
    .writing-row { grid-template-columns: 1fr; gap: 0.2rem; }
    .exp-header { flex-direction: column; gap: 0; }
}