/* ─── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --accent:       #840c0c;
    --accent-dim:   #5a0808;
    --fg:           #0d0d0d;
    --fg-mid:       rgba(0,0,0,0.55);
    --fg-dim:       rgba(0,0,0,0.35);
    --bg:           #ffffff;
    --bg-tag:       #f5f5f5;
    --border:       rgba(0,0,0,0.12);
    --font:         'Courier New', Courier, monospace;
    --max-w:        960px;
    --pad-x:        56px;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.65;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ─── Top Nav ───────────────────────────────────────────────────────────────── */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 0;
    font-size: 0.78rem;
    letter-spacing: 0.06em;
    text-transform: lowercase;
}

.top-nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 10px var(--pad-x);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-nav-links {
    display: flex;
    align-items: center;
    gap: 0;
}

.top-nav a {
    color: var(--fg-mid);
    text-decoration: none;
    transition: color 0.2s;
}

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

.nav-sep {
    color: var(--fg-dim);
    margin: 0 0.6rem;
    user-select: none;
}

/* ─── Layout ─────────────────────────────────────────────────────────────────── */
.site-main { flex: 1 0 auto; }

.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 48px var(--pad-x) 64px;
    width: 100%;
}

/* ─── Typography ──────────────────────────────────────────────────────────────── */
h1 {
    font-size: 2.2rem;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    line-height: 1.2;
    margin-top: 2.5rem;
}

h2 {
    font-size: 0.72rem;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 1.6rem;
}

a {
    color: var(--fg);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}

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

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 1px;
}

/* ─── Header ──────────────────────────────────────────────────────────────────── */
header { margin-bottom: 0.5rem; }

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 2rem;
}

.header-text { flex: 1; }

.subtitle {
    margin-top: 0.4rem;
    font-size: 1rem;
    color: var(--fg-mid);
    letter-spacing: 0.04em;
}

.tagline {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--fg-dim);
    letter-spacing: 0.03em;
}

.header-links {
    margin-top: 1.2rem;
    font-size: 0.82rem;
    letter-spacing: 0.03em;
}

.header-links a {
    color: var(--fg-mid);
    border-bottom: 1px solid var(--border);
    padding-bottom: 1px;
}

.header-links a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.header-links .sep {
    color: var(--fg-dim);
    margin: 0 0.45rem;
    user-select: none;
}

.header-avatar {
    width: 100px;
    height: 100px;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
    filter: grayscale(20%);
    transition: filter 0.3s, transform 0.3s;
}

.header-avatar:hover {
    filter: grayscale(0%);
    transform: translateY(-2px);
}

/* ─── Divider ─────────────────────────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.4rem 0;
}

/* ─── Section ─────────────────────────────────────────────────────────────────── */
.section { margin-bottom: 0.5rem; }

/* ─── About ──────────────────────────────────────────────────────────────────── */
.about-text {
    font-size: 0.95rem;
    color: var(--fg-mid);
    max-width: 720px;
    margin-bottom: 1.4rem;
    line-height: 1.75;
}

.meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--fg-dim);
    margin-bottom: 2rem;
    letter-spacing: 0.02em;
}

.highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border: 1px solid var(--border);
}

.highlight-item {
    padding: 1.2rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    border-right: 1px solid var(--border);
}

.highlight-item:last-child { border-right: none; }

.highlight-num {
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    color: var(--fg);
    line-height: 1;
}

.highlight-label {
    font-size: 0.7rem;
    color: var(--fg-dim);
    letter-spacing: 0.04em;
    line-height: 1.35;
}

/* ─── Stack Tags ──────────────────────────────────────────────────────────────── */
.stack-group {
    display: grid;
    grid-template-columns: 130px 1fr;
    align-items: start;
    gap: 0.6rem 1rem;
    margin-bottom: 0.85rem;
}

.stack-label {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--fg-dim);
    padding-top: 4px;
    line-height: 1.3;
}

.stack-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag {
    font-size: 0.78rem;
    padding: 3px 9px;
    background: var(--bg-tag);
    border: 1px solid var(--border);
    letter-spacing: 0.02em;
    color: var(--fg);
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    white-space: nowrap;
    cursor: default;
}

.tag:hover {
    background: var(--fg);
    color: var(--bg);
    border-color: var(--fg);
}

.tag.tag-sm {
    font-size: 0.7rem;
    padding: 2px 7px;
    color: var(--fg-mid);
    background: transparent;
}

.tag.tag-sm:hover {
    background: var(--fg);
    color: var(--bg);
    border-color: var(--fg);
}

/* ─── Timeline / Experience ───────────────────────────────────────────────────── */
.timeline {
    position: relative;
    padding-left: 20px;
    border-left: 1px solid var(--border);
}

.job {
    position: relative;
    margin-bottom: 2.4rem;
    padding-left: 1.4rem;
}

.job::before {
    content: '';
    position: absolute;
    left: -25px;
    top: 6px;
    width: 7px;
    height: 7px;
    border: 1px solid var(--accent);
    background: var(--bg);
    transform: rotate(45deg);
}

.job:last-child { margin-bottom: 0; }

.job-meta {
    display: flex;
    align-items: baseline;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 0.15rem;
}

.job-company {
    font-size: 0.95rem;
    font-weight: normal;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.job-date {
    font-size: 0.78rem;
    color: var(--fg-dim);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.job-role {
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.55rem;
}

.job-desc {
    font-size: 0.88rem;
    color: var(--fg-mid);
    line-height: 1.7;
    margin-bottom: 0.7rem;
}

.job-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.job-tag {
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 0.04em;
    text-transform: lowercase;
    margin-left: 0.5rem;
    font-weight: normal;
}

/* ─── Footer ──────────────────────────────────────────────────────────────────── */
footer {
    text-align: center;
    color: var(--fg-dim);
    font-size: 0.78rem;
    padding: 3rem 0 2.4rem;
    flex-shrink: 0;
    letter-spacing: 0.03em;
    line-height: 2;
}

.footer-nav { margin-top: 0.6rem; }

.footer-nav a {
    color: var(--fg-dim);
    transition: color 0.2s;
    border-bottom: none;
}

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

.footer-nav .separator {
    margin: 0 0.5rem;
    opacity: 0.4;
}

/* ─── Responsive ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    :root { --pad-x: 28px; }

    h1 { font-size: 1.7rem; }

    .header-content { align-items: flex-start; }
    .header-avatar { width: 72px; height: 72px; }

    .highlights { grid-template-columns: repeat(2, 1fr); }
    .highlight-item { border-right: none; border-bottom: 1px solid var(--border); }
    .highlight-item:nth-child(odd) { border-right: 1px solid var(--border); }
    .highlight-item:nth-last-child(-n+2) { border-bottom: none; }

    .stack-label { font-size: 0.68rem; }
}

@media (max-width: 640px) {
    :root { --max-w: 100%; --pad-x: 24px; }
}

@media (max-width: 480px) {
    :root { --pad-x: 18px; }

    h1 { font-size: 1.35rem; letter-spacing: 0.07em; }

    .header-content { gap: 1rem; }
    .header-avatar { width: 54px; height: 54px; }

    .stack-group { grid-template-columns: 1fr; gap: 0.3rem; }
    .stack-label { min-width: unset; }

    .timeline { padding-left: 14px; }
    .job { padding-left: 1rem; }
    .job::before { left: -19px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ─── Skip link ───────────────────────────────────────────────────────────────── */
.skip-link {
    position: absolute;
    top: -999px;
    left: 0;
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: #fff;
    font-size: 0.82rem;
    border-bottom: none;
    z-index: 9999;
    letter-spacing: 0.04em;
}

.skip-link:focus {
    top: 0;
}

/* ─── Dark mode ───────────────────────────────────────────────────────────────── */
[data-theme="dark"] {
    --accent:     #e05555;
    --accent-dim: #b83030;
    --fg:         #e8e8e8;
    --fg-mid:     rgba(232,232,232,0.6);
    --fg-dim:     rgba(232,232,232,0.35);
    --bg:         #0f0f0f;
    --bg-tag:     #1a1a1a;
    --border:     rgba(255,255,255,0.1);
}

[data-theme="dark"] .header-avatar { filter: grayscale(20%) brightness(0.9); }
[data-theme="dark"] .header-avatar:hover { filter: grayscale(0%) brightness(1); }

[data-theme="light"] {
    --accent:     #840c0c;
    --accent-dim: #5a0808;
    --fg:         #0d0d0d;
    --fg-mid:     rgba(0,0,0,0.55);
    --fg-dim:     rgba(0,0,0,0.35);
    --bg:         #ffffff;
    --bg-tag:     #f5f5f5;
    --border:     rgba(0,0,0,0.12);
}

/* ─── Theme toggle button ─────────────────────────────────────────────────────── */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0 0 0 0.4rem;
    font-family: var(--font);
    font-size: 0.95rem;
    line-height: 1;
    color: var(--fg-mid);
    transition: color 0.2s;
    vertical-align: middle;
    user-select: none;
    flex-shrink: 0;
}

.theme-toggle:hover { color: var(--accent); }
.theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ─── Print ───────────────────────────────────────────────────────────────────── */
@media print {
    .top-nav, .skip-link { display: none; }

    body {
        font-size: 11pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }

    :root {
        --accent: #6b0000;
        --fg: #000;
        --fg-mid: #333;
        --fg-dim: #666;
        --border: #ccc;
        --bg: #fff;
        --bg-tag: #f0f0f0;
        --pad-x: 0px;
    }

    .container { padding: 0; }

    h1 { font-size: 18pt; }
    h2 { font-size: 8pt; margin-bottom: 0.8rem; }

    .header-avatar { width: 72px; height: 72px; }

    .highlights { border: 1px solid #ccc; }

    a { color: inherit; border-bottom: none; }
    a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 0.7em; color: #666; }
    a[href^="mailto"]::after { content: " (" attr(href) ")"; font-size: 0.7em; color: #666; }

    .tag, .tag.tag-sm {
        background: transparent;
        border: 1px solid #ccc;
        color: #333;
    }

    footer { padding: 1rem 0 0; }

    .divider { border-top: 1px solid #ccc; }

    @page {
        margin: 1.5cm 2cm;
    }
}