@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,400..800;1,14..32,400..700&family=JetBrains+Mono:ital,wght@0,400;0,500;0,600;1,400&display=swap');

/* ---- tokens: colors ---- */
:root {
    --gray-0: #0a0a0b;
    --gray-1: #111113;
    --gray-2: #17181a;
    --gray-3: #1f2023;
    --gray-4: #2a2b2f;
    --gray-5: #3a3c41;
    --gray-6: #5b5e66;
    --gray-7: #87898f;
    --gray-8: #b4b6bb;
    --gray-9: #dcdde0;
    --gray-10: #f2f2f3;

    --accent-9: #fed7aa;
    --accent-7: #fb923c;
    --accent-6: #f5731f;
    --accent-5: #ea580c;
    --accent-4: #c2410c;
    --accent-3: #9a3412;

    --bg-page: var(--gray-0);
    --bg-surface: var(--gray-1);
    --bg-surface-raised: var(--gray-2);
    --bg-surface-hover: var(--gray-3);

    --border-subtle: var(--gray-3);
    --border-default: var(--gray-4);
    --border-strong: var(--gray-5);

    --text-primary: var(--gray-10);
    --text-secondary: var(--gray-8);
    --text-tertiary: var(--gray-6);

    --accent-subtle: color-mix(in oklch, var(--accent-5) 16%, var(--bg-page));
    --accent-subtle-border: color-mix(in oklch, var(--accent-5) 40%, var(--bg-page));
}

/* ---- tokens: typography ---- */
:root {
    --font-sans: 'Inter', ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-md: 1.125rem;
    --text-lg: 1.25rem;
    --text-2xl: 1.875rem;
    --text-3xl: 2.5rem;

    --leading-tight: 1.1;
    --leading-normal: 1.55;
    --leading-relaxed: 1.7;

    --tracking-tight: -0.02em;
    --tracking-normal: 0;
    --tracking-wide: 0.04em;
    --tracking-wider: 0.12em;
}

/* ---- tokens: spacing ---- */
:root {
    --space-2: 8px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-16: 64px;
    --space-20: 80px;

    --container-max: 1120px;
    --gutter: 24px;
}

/* ---- tokens: effects ---- */
:root {
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 999px;

    --shadow-focus: 0 0 0 3px color-mix(in oklch, var(--accent-7) 45%, transparent);

    --ease-standard: cubic-bezier(.4, 0, .2, 1);
    --duration-fast: 120ms;
    --duration-base: 180ms;
}

/* ---- base ---- */
* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg-page);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    -webkit-font-smoothing: antialiased;
}

/* ---- nav ---- */
.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: color-mix(in oklch, var(--bg-page) 92%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 16px var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
}

.nav-brand img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-default);
}

.nav-links {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--duration-base) var(--ease-standard);
}

.nav-link:hover { color: var(--text-primary); }
.nav-link.active { color: var(--accent-6); }

/* ---- layout ---- */
.section {
    padding: var(--space-20) var(--gutter);
    max-width: var(--container-max);
    margin: 0 auto;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--accent-6);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
}

/* ---- hero ---- */
.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-16) var(--gutter);
    max-width: var(--container-max);
    margin: 0 auto;
}

.hero .eyebrow { margin-bottom: 20px; }

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.75rem);
    font-weight: 800;
    letter-spacing: var(--tracking-tight);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin: 0;
}

.hero-title span { color: var(--accent-5); }

.hero-role {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-top: 16px;
}

.hero-lede {
    max-width: 640px;
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    margin-top: 24px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-top: 32px;
    flex-wrap: wrap;
    align-items: center;
}

/* ---- button ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: var(--text-sm);
    padding: 10px 18px;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
    transition: background var(--duration-base) var(--ease-standard),
                transform var(--duration-fast) var(--ease-standard);
}

.btn:active { transform: scale(.97); }

.btn-primary { background: var(--accent-5); color: var(--gray-0); }
.btn-primary:hover { background: var(--accent-6); color: var(--gray-0); }

.btn-secondary {
    background: var(--bg-surface-raised);
    color: var(--text-primary);
    border-color: var(--border-default);
}

.btn-secondary:hover { background: var(--bg-surface-hover); color: var(--text-primary); }

/* ---- social link ---- */
.social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--duration-base) var(--ease-standard),
                border-color var(--duration-base) var(--ease-standard);
}

.social:hover { color: var(--accent-6); border-color: var(--accent-6); }

.social-row { display: flex; gap: 8px; }
.hero-actions .social-row { margin-left: 8px; }

/* ---- section heading ---- */
.section-heading { margin-bottom: var(--space-8); }

.section-heading .eyebrow {
    font-size: 12px;
    display: block;
    margin-bottom: 8px;
}

.section-title {
    margin: 0;
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: var(--tracking-tight);
    display: flex;
    gap: 10px;
    align-items: center;
}

.section-title i {
    color: var(--accent-6);
    font-size: 0.75em;
}

/* ---- about ---- */
.about-grid {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 40px;
    align-items: start;
}

.about-grid img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border-default);
}

.about-grid p {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    margin: 0;
}

/* ---- badge ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-family: var(--font-mono);
    letter-spacing: var(--tracking-wide);
    font-weight: 500;
    background: var(--bg-surface-raised);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
    text-decoration: none;
}

a.badge:hover {
    color: var(--accent-7);
    border-color: var(--accent-subtle-border);
    background: var(--accent-subtle);
}

.badge-accent {
    background: var(--accent-subtle);
    color: var(--accent-7);
    border-color: var(--accent-subtle-border);
}

/* ---- cards ---- */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card {
    display: block;
    text-decoration: none;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--duration-base) var(--ease-standard),
                border-color var(--duration-base) var(--ease-standard);
}

.card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
}

.card-body { padding: var(--space-5); }

.card-title {
    color: var(--text-primary);
    font-size: var(--text-md);
    font-weight: 700;
    margin-bottom: 6px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    margin: 0 0 12px;
}

.card-tags { display: flex; gap: 6px; flex-wrap: wrap; }

.card-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-tertiary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-full);
    padding: 3px 9px;
}

/* ---- filter bar ---- */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    margin-top: -16px;
}

.filter-bar span:first-child {
    color: var(--text-tertiary);
    font-size: 13px;
}

/* ---- timeline ---- */
.timeline-item {
    display: flex;
    gap: var(--space-6);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: var(--space-8);
}

.timeline-item.last {
    padding-bottom: 0;
    border-bottom: none;
    margin-bottom: 0;
}

.timeline-date {
    flex: 0 0 130px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-6);
    letter-spacing: var(--tracking-wide);
}

.timeline-body { flex: 1; }

.timeline-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: var(--text-md);
}

.timeline-org {
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    margin-top: 2px;
    margin-bottom: 8px;
}

.timeline-desc {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    margin: 0 0 8px;
}

.timeline-bullets {
    margin: 0;
    padding-left: 18px;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}

.timeline-bullets li { margin-bottom: 4px; }

/* ---- skills ---- */
.skills-hint {
    color: var(--text-tertiary);
    font-size: 13px;
    margin-top: -8px;
    margin-bottom: 20px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.skill-group-title {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-tertiary);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    margin-bottom: 10px;
}

.skill-list { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---- writing ---- */
.writing-list { display: flex; flex-direction: column; }

.writing-item {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    text-decoration: none;
    padding: 18px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.writing-item:last-child { border-bottom: none; }

.writing-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: var(--text-md);
}

.writing-excerpt {
    color: var(--text-secondary);
    font-size: 13px;
    margin-top: 4px;
}

.writing-date {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
}

/* ---- detail pages ---- */
.back-link {
    color: var(--text-tertiary);
    font-size: 13px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 24px;
}

.back-link:hover { color: var(--text-primary); }

.post-date {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-6);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    margin-bottom: 14px;
}

.post-title {
    margin: 0 0 28px;
    font-size: var(--text-3xl);
    font-weight: 800;
    letter-spacing: var(--tracking-tight);
    color: var(--text-primary);
    max-width: 720px;
}

.prose { max-width: 680px; }

.prose p {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    margin: 0 0 20px;
}

.case-lede {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    max-width: 720px;
}

.case-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* ---- contact ---- */
.contact-lede {
    color: var(--text-secondary);
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    max-width: 640px;
    margin: 0 0 28px;
}

.contact-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.contact-fallback {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-5);
}

/* ---- footer ---- */
.footer {
    border-top: 1px solid var(--border-subtle);
    padding: var(--space-10) var(--gutter);
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-note {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-tertiary);
}

/* ---- focus ---- */
a:focus-visible,
.btn:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
    border-radius: var(--radius-md);
}

/* ---- narrow screens (added: the design ships no media queries) ---- */
@media (max-width: 768px) {
    .section { padding: var(--space-16) var(--gutter); }
    .nav-inner { justify-content: center; }
    .nav-links { gap: 14px; justify-content: center; }
    .card-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; gap: 24px; }
    .timeline-item { flex-direction: column; gap: var(--space-2); }
    .timeline-date { flex: none; }
    .writing-item { flex-direction: column; gap: 6px; }
    .hero-actions .social-row { margin-left: 0; }
}