:root {
    --fg: #e6e6e6;
    --fg-strong: #f4f4f5;
    --muted: #8a8a92;
    --border: #24242b;
    --bg: #0b0b0d;
    --bio: #c9c9cf;
    --entry-text: #bdbdc4;
    --accent: #ff4d6a;
    --max: 720px;
    --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    color-scheme: dark;
}

:root[data-theme="light"] {
    --fg: #111;
    --fg-strong: #000;
    --muted: #6b6b6b;
    --border: #e5e5e5;
    --bg: #ffffff;
    --bio: #2a2a2a;
    --entry-text: #333;
    --accent: #b8002e;
    color-scheme: light;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--sans);
    font-size: 19.5px;
    line-height: 1.65;
    color: var(--fg);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.wrap {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: var(--fg);
    text-decoration: underline;
    text-decoration-color: var(--border);
    text-underline-offset: 3px;
    transition: color .15s ease, text-decoration-color .15s ease;
}
a:hover {
    color: var(--accent);
    text-decoration-color: var(--accent);
}

/* Nav */
.nav {
    padding: 32px 0 0;
}
.nav .wrap {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 24px;
}
.nav-brand {
    font-weight: 600;
    font-size: 18px;
    letter-spacing: -0.01em;
}
.nav-brand a { text-decoration: none; }
.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 22px;
    font-size: 17px;
}
.nav-links a {
    text-decoration: none;
    color: var(--muted);
}
.nav-links a:hover,
.nav-links a.active { color: var(--fg); }

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 3px 8px;
    border-radius: 2px;
    cursor: pointer;
    line-height: 1.4;
    transition: color .15s ease, border-color .15s ease;
}
.theme-toggle:hover {
    color: var(--fg);
    border-color: var(--fg);
}

/* Header (profile + name + bio) */
header.intro {
    padding: 56px 0 16px;
}
.intro-row {
    display: flex;
    gap: 28px;
    align-items: flex-start;
}
.avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 1px solid var(--border);
}
.intro-text h1 {
    margin: 0 0 6px;
    font-size: 30px;
    font-weight: 600;
    letter-spacing: -0.02em;
}
.intro-text .tagline {
    margin: 0 0 14px;
    color: var(--muted);
    font-size: 18px;
}
.intro-text .bio {
    margin: 0;
    font-size: 19px;
    color: var(--bio);
}

/* Sections */
section.block {
    padding: 40px 0 8px;
}
h2.section-heading {
    font-size: 16px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--muted);
    margin: 0 0 20px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

/* Entries: date on left, content on right */
.entries {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.entry {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 20px;
    align-items: baseline;
}
.entry .when {
    font-family: var(--mono);
    font-size: 15.5px;
    color: var(--muted);
    padding-top: 3px;
    white-space: nowrap;
}
.entry .what h3 {
    margin: 0 0 3px;
    font-size: 19px;
    font-weight: 600;
}
.entry .what .where {
    margin: 0 0 4px;
    font-size: 17px;
    color: var(--muted);
}
.entry .what p {
    margin: 4px 0 0;
    font-size: 18px;
    color: var(--entry-text);
}

/* Plain link list for publications, CTFs, etc. */
ul.list {
    list-style: none;
    margin: 0;
    padding: 0;
}
ul.list li {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 20px;
    align-items: baseline;
    padding: 8px 0;
    border-bottom: 1px dashed var(--border);
}
ul.list li:last-child { border-bottom: none; }
ul.list li .when {
    font-family: var(--mono);
    font-size: 15.5px;
    color: var(--muted);
}
ul.list li .what { font-size: 18px; }
ul.list li .what .venue { color: var(--muted); font-size: 16px; margin-left: 6px; }

/* Contact row */
.contact-row {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 18px;
}
.contact-row .label {
    color: var(--muted);
    font-family: var(--mono);
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-right: 6px;
}

/* Vulnerabilities page */
.vendor-block {
    margin-top: 32px;
}
.vendor-block h3.vendor-name {
    margin: 0 0 6px;
    font-size: 19px;
    font-weight: 600;
}
.vendor-block .vendor-desc {
    margin: 0 0 14px;
    font-size: 16.5px;
    color: var(--muted);
}
.vuln-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--border);
}
.vuln-list li {
    display: grid;
    grid-template-columns: 150px 1fr auto;
    gap: 16px;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.vuln-list .cve {
    font-family: var(--mono);
    font-size: 15.5px;
    color: var(--fg);
    white-space: nowrap;
}
.vuln-list .cve a { text-decoration: none; color: var(--fg); }
.vuln-list .cve a:hover { color: var(--accent); }
.vuln-list .title { font-size: 18px; }
.vuln-list .title .desc {
    display: block;
    color: var(--muted);
    font-size: 16px;
    margin-top: 2px;
}
.vuln-list .sev {
    font-family: var(--mono);
    font-size: 13.5px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 2px 8px;
    border: 1px solid var(--border);
    border-radius: 2px;
    color: var(--muted);
    white-space: nowrap;
}
.vuln-list .sev.critical { color: #ff5470; border-color: #ff5470; }
.vuln-list .sev.high     { color: #ff4d6a; border-color: #ff4d6a; }
.vuln-list .sev.medium   { color: #d4a650; border-color: #8a6a30; }
.vuln-list .sev.low      { color: #8dcf8d; border-color: #3a6a3a; }
:root[data-theme="light"] .vuln-list .sev.critical { color: #a40019; border-color: #a40019; }
:root[data-theme="light"] .vuln-list .sev.high     { color: #b8002e; border-color: #b8002e; }
:root[data-theme="light"] .vuln-list .sev.medium   { color: #8a6200; border-color: #d6b368; }
:root[data-theme="light"] .vuln-list .sev.low      { color: #3a7a3a; border-color: #a7cba7; }

.page-title {
    font-size: 28px;
    font-weight: 600;
    margin: 56px 0 6px;
    letter-spacing: -0.01em;
}
.page-sub {
    color: var(--muted);
    font-size: 17px;
    margin: 0 0 8px;
    font-family: var(--mono);
}

/* Blog */
.blog-empty {
    color: var(--muted);
    font-size: 17px;
    padding: 12px 0;
}
.blog-post {
    font-size: 18px;
    line-height: 1.75;
    color: var(--bio);
    padding: 8px 0 16px;
}
.blog-post h1,
.blog-post h2,
.blog-post h3 {
    color: var(--fg);
    letter-spacing: -0.01em;
    margin: 1.6em 0 0.5em;
}
.blog-post h1 { font-size: 26px; }
.blog-post h2 { font-size: 22px; }
.blog-post h3 { font-size: 19px; }
.blog-post p { margin: 0 0 1em; }
.blog-post code {
    font-family: var(--mono);
    font-size: 0.88em;
    background: rgba(127,127,127,0.12);
    padding: 1px 5px;
    border-radius: 3px;
}
.blog-post pre {
    font-family: var(--mono);
    font-size: 14px;
    background: rgba(127,127,127,0.08);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 14px 16px;
    overflow-x: auto;
    line-height: 1.55;
}
.blog-post pre code { background: none; padding: 0; font-size: inherit; }
.blog-post blockquote {
    margin: 1em 0;
    padding: 2px 16px;
    border-left: 3px solid var(--border);
    color: var(--muted);
}
.blog-post ul, .blog-post ol { padding-left: 1.4em; }
.blog-post img { max-width: 100%; height: auto; }
.blog-back {
    margin-top: 2.5em;
    padding-top: 1em;
    border-top: 1px solid var(--border);
    font-family: var(--mono);
    font-size: 14px;
}

/* Footer */
footer.foot {
    margin-top: 72px;
    padding: 24px 0 40px;
    border-top: 1px solid var(--border);
    font-size: 14.5px;
    color: var(--muted);
    text-align: left;
}

/* Responsive */
@media (max-width: 620px) {
    .intro-row {
        flex-direction: column;
        gap: 18px;
    }
    .avatar { width: 80px; height: 80px; }
    .nav .wrap {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .nav-links { flex-wrap: wrap; gap: 16px; }
    .entry, ul.list li {
        grid-template-columns: 1fr;
        gap: 2px;
    }
    .vuln-list li {
        grid-template-columns: 1fr auto;
        gap: 6px 12px;
    }
    .vuln-list .cve { grid-column: 1 / 2; }
    .vuln-list .sev { grid-column: 2 / 3; grid-row: 1; }
    .vuln-list .title { grid-column: 1 / 3; }
}