/*
 * cwvermaak.dev — personal site & dev blog.
 * Shares the CW Vermaak visual language: serif display + modern sans,
 * navy/brass heritage with tech teal. Adds long-form + code typography.
 */

:root {
    --navy: #0f1f3a;
    --navy-2: #1b3159;
    --parchment: #f6f1e7;
    --parchment-2: #fbf8f1;
    --ink: #1c2230;
    --muted: #556173;
    --rule: #e2d8c2;
    --brass: #b5862b;
    --brass-2: #d4a24a;
    --oxblood: #7a1f2b;
    --teal: #19c7b0;
    --teal-2: #0fa997;
    --blue: #2a8ad1;
    --danger: #b22234;
    --success: #1f6f3f;
    --code-bg: #0d1b2e;
    --shadow: 0 6px 24px rgba(15, 31, 58, 0.08);
    --shadow-strong: 0 12px 40px rgba(15, 31, 58, 0.14);
    --radius: 6px;
    --radius-lg: 14px;
    --content: 1120px;
    --serif: "Playfair Display", "Iowan Old Style", Georgia, "Times New Roman", serif;
    --sans: "Inter", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--sans);
    color: var(--ink);
    background: var(--parchment-2);
    line-height: 1.65;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--serif); color: var(--navy); margin: 0 0 0.6em; line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.7rem, 2.6vw, 2.4rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }
a { color: var(--navy-2); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--teal-2); }
.nowrap { white-space: nowrap; }

.container { max-width: var(--content); margin: 0 auto; padding: 0 1.25rem; }
.eyebrow {
    display: inline-block; font-family: var(--sans); font-size: 0.78rem;
    letter-spacing: 0.22em; text-transform: uppercase; color: var(--brass);
    font-weight: 600; margin-bottom: 0.85rem;
}
.eyebrow::before { content: "— "; color: var(--brass-2); }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }

/* ─── Topbar ───────────────────────────────────────────────── */
.topbar {
    background: #fff; border-bottom: 1px solid var(--rule);
    position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(1.4) blur(10px);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 0.85rem 1.25rem; max-width: var(--content); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; }
.brand img { height: 46px; width: auto; display: block; }
.nav { display: flex; align-items: center; gap: 1.4rem; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.95rem; position: relative; padding: 0.3rem 0; }
.nav a:hover { color: var(--navy); }
.nav a.active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -4px; height: 2px; background: var(--teal); }
.nav .nav-ext::before { content: "↗"; font-size: 0.75em; color: var(--brass); margin-right: 0.2rem; vertical-align: 1px; }
.nav .btn { padding: 0.55rem 1.15rem; }
.nav-toggle { display: none; background: none; border: 0; padding: 0.4rem; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 4px 0; }

@media (max-width: 860px) {
    .nav-toggle { display: block; }
    .nav {
        position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 0;
        background: #fff; border-bottom: 1px solid var(--rule);
        padding: 0.5rem 1.25rem 1rem; display: none;
    }
    .nav.open { display: flex; }
    .nav a { padding: 0.75rem 0; border-bottom: 1px solid var(--rule); }
    .nav a:last-child { border-bottom: 0; }
}

/* ─── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.85rem 1.4rem; border-radius: var(--radius);
    font-weight: 600; font-size: 0.95rem; text-decoration: none;
    border: 1px solid transparent; cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-2); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-accent { background: var(--teal); color: var(--navy); }
.btn-accent:hover { background: var(--teal-2); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-ghost-dark { background: transparent; color: #fff; border-color: rgba(255,255,255,0.3); }
.btn-ghost-dark:hover { background: rgba(255,255,255,0.08); color: #fff; border-color: #fff; }
.btn-lg { padding: 1.05rem 1.75rem; font-size: 1rem; }

/* ─── Hero ────────────────────────────────────────────────── */
.hero {
    position: relative; overflow: hidden;
    background:
        radial-gradient(1200px 500px at 20% -10%, rgba(25,199,176,0.14), transparent 60%),
        radial-gradient(800px 400px at 90% 10%, rgba(212,162,74,0.16), transparent 60%),
        linear-gradient(180deg, #0f1f3a 0%, #142849 100%);
    color: #fff; padding: 5.5rem 0 6rem;
}
.hero::before {
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.8), transparent 70%);
}
.hero .container { position: relative; display: grid; grid-template-columns: 1.35fr 1fr; gap: 3rem; align-items: center; }
.hero h1 { color: #fff; }
.hero .eyebrow { color: var(--brass-2); }
.hero .lede { color: rgba(255,255,255,0.84); font-size: 1.2rem; max-width: 54ch; }
.hero-tagline { font-family: var(--serif); font-style: italic; color: var(--brass-2); font-size: 1.05rem; margin-top: 1rem; }
.hero-cta { display: flex; gap: 0.9rem; margin-top: 1.8rem; flex-wrap: wrap; }
.hero-art {
    position: relative; aspect-ratio: 1/1; max-width: 360px; justify-self: end;
    background: radial-gradient(circle at 50% 50%, rgba(25,199,176,0.22), transparent 60%);
    border-radius: 50%;
}
.hero-art img { width: 100%; height: 100%; display: block; }
@media (max-width: 860px) {
    .hero .container { grid-template-columns: 1fr; }
    .hero-art { max-width: 220px; justify-self: center; margin-top: 1rem; }
}

/* ─── Proof strip ─────────────────────────────────────────── */
.proof { background: var(--parchment); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); padding: 1.2rem 0; }
.proof-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; max-width: var(--content); margin: 0 auto; padding: 0 1.25rem; }
.proof-label { font-family: var(--serif); font-style: italic; color: var(--muted); font-size: 0.95rem; }
.proof-marks { display: flex; gap: 1.6rem; flex-wrap: wrap; color: var(--navy); font-weight: 600; letter-spacing: 0.02em; font-size: 0.92rem; }
.proof-marks span { position: relative; padding-left: 1.4rem; }
.proof-marks span::before { content: "◆"; position: absolute; left: 0; color: var(--brass); font-size: 0.8em; top: 2px; }

/* ─── Section layout ──────────────────────────────────────── */
.section { padding: 4.5rem 0; }
.section--alt { background: #fff; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 3rem; }
.section-head .lede { margin: 0 auto; }

/* ─── Cards ──────────────────────────────────────────────── */
.grid { display: grid; gap: 1.5rem; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 860px) { .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid--3, .grid--2 { grid-template-columns: 1fr; } }

.card {
    background: #fff; border: 1px solid var(--rule); border-radius: var(--radius-lg);
    padding: 1.75rem; transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-strong); border-color: var(--brass-2); }
.card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--brass), var(--teal)); opacity: 0; transition: opacity 0.2s ease;
}
.card:hover::before { opacity: 1; }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: var(--muted); margin-bottom: 0; }
.card-link { margin-top: 1rem; display: inline-block; font-weight: 600; text-decoration: none; color: var(--navy); }
.card-link::after { content: " →"; color: var(--teal-2); transition: transform 0.2s ease; display: inline-block; }
.card:hover .card-link::after { transform: translateX(3px); }

/* ─── Post cards (home grid) ──────────────────────────────── */
.post-card { display: flex; flex-direction: column; }
/* The overlay link sits on top of the whole card, making it fully clickable. */
.post-card .post-card-link { position: absolute; inset: 0; z-index: 2; }
.post-card .tag { pointer-events: none; }
.post-card-meta { display: flex; align-items: center; gap: 0.5rem; color: var(--muted); font-size: 0.82rem; letter-spacing: 0.03em; margin-bottom: 0.6rem; }
.post-card-meta .dot { color: var(--brass); }
.post-card h3 { margin-bottom: 0.5rem; }
.post-card p { margin-bottom: 1rem; flex: 1; }
.post-card .card-link { margin-top: auto; }

/* ─── Post list (writing index) ───────────────────────────── */
.post-list { max-width: 820px; margin: 0 auto; }
.post-row { display: grid; grid-template-columns: 160px 1fr; gap: 2rem; padding: 2rem 0; border-bottom: 1px solid var(--rule); }
.post-row:first-child { padding-top: 0; }
.post-row:last-child { border-bottom: 0; }
.post-row-meta { color: var(--muted); font-size: 0.85rem; display: flex; flex-direction: column; gap: 0.25rem; }
.post-row-meta time { font-weight: 600; color: var(--navy); font-family: var(--serif); font-size: 1.05rem; }
.post-row-body h2 { font-size: 1.5rem; margin-bottom: 0.4rem; }
.post-row-body h2 a { text-decoration: none; color: var(--navy); }
.post-row-body h2 a:hover { color: var(--teal-2); }
.post-row-body p { color: var(--muted); margin-bottom: 0.7rem; }
@media (max-width: 640px) { .post-row { grid-template-columns: 1fr; gap: 0.5rem; } .post-row-meta { flex-direction: row; gap: 0.75rem; } .post-row-meta time { font-size: 0.9rem; } }

/* ─── Tags ────────────────────────────────────────────────── */
.tag-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.5rem; }
.tag {
    font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.02em;
    background: var(--parchment); color: var(--navy-2); border: 1px solid var(--rule);
    padding: 0.2rem 0.6rem; border-radius: 100px; text-decoration: none; transition: background 0.15s, border-color 0.15s;
}
a.tag:hover { background: #fff; border-color: var(--brass-2); color: var(--navy); }
.tag small { color: var(--muted); }
.tag-filter { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; margin-bottom: 3rem; }
.tag-filter .tag { font-size: 0.82rem; padding: 0.35rem 0.85rem; }
.tag-active { background: var(--navy); color: #fff; border-color: var(--navy); }
.tag-active small { color: rgba(255,255,255,0.6); }

/* ─── CTA band ────────────────────────────────────────────── */
.cta-band {
    background: linear-gradient(135deg, #142849 0%, #0f1f3a 100%);
    color: #fff; padding: 4rem 0; text-align: center; border-top: 3px solid var(--brass);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.82); max-width: 620px; margin: 0 auto 1.8rem; }

/* ─── Footer ──────────────────────────────────────────────── */
footer { background: #0a162a; color: rgba(255,255,255,0.75); padding: 3rem 0 1.5rem; font-size: 0.9rem; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem; padding-bottom: 2rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
@media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-grid h4 { color: #fff; font-family: var(--sans); font-size: 0.78rem; letter-spacing: 0.22em; text-transform: uppercase; margin-bottom: 1rem; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.foot-grid a { color: rgba(255,255,255,0.75); text-decoration: none; }
.foot-grid a:hover { color: var(--teal); }
.foot-brand p { color: rgba(255,255,255,0.6); max-width: 40ch; font-style: italic; font-family: var(--serif); }
.foot-brand img { height: 54px; width: auto; margin-bottom: 1rem; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; padding-top: 1.25rem; gap: 1rem; color: rgba(255,255,255,0.5); font-size: 0.82rem; }
.foot-bottom .motto { font-family: var(--serif); font-style: italic; }

/* ─── Page header (sub-pages) ─────────────────────────────── */
.page-head {
    background:
        linear-gradient(180deg, rgba(15,31,58,0.95), rgba(20,40,73,0.92)),
        radial-gradient(800px 300px at 80% 0%, rgba(25,199,176,0.18), transparent 60%);
    color: #fff; padding: 4.5rem 0 3rem; text-align: center; border-bottom: 3px solid var(--brass);
}
.page-head h1 { color: #fff; }
.page-head .lede { color: rgba(255,255,255,0.82); margin: 0 auto; }
.breadcrumb { font-size: 0.82rem; color: rgba(255,255,255,0.7); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 1rem; }
.breadcrumb a { color: var(--brass-2); text-decoration: none; }
.breadcrumb a:hover { color: #fff; }

/* Post header tweaks */
.post-head { text-align: left; }
.post-head .breadcrumb { text-align: left; }
.post-head-meta { justify-content: flex-start; color: rgba(255,255,255,0.8); margin-bottom: 1rem; }
.post-head-meta .dot { color: var(--brass-2); }
.post-head h1 { margin-bottom: 0.5rem; }
.post-head .lede { margin: 0; text-align: left; }

/* ─── Prose / long-form ───────────────────────────────────── */
.prose { max-width: 720px; margin: 0 auto; }
.prose h2, .prose h3 { margin-top: 2.5rem; }
.prose h2 { font-size: 1.7rem; }
.prose h3 { font-size: 1.3rem; }
.prose ul, .prose ol { padding-left: 1.2rem; }
.prose li { margin-bottom: 0.4rem; }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--rule); }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }
.prose blockquote {
    border-left: 3px solid var(--brass); padding: 0.2rem 1.2rem; margin: 1.8rem 0;
    font-family: var(--serif); font-style: italic; color: var(--navy); font-size: 1.15rem;
}
.prose a { color: var(--teal-2); text-decoration: underline; }
.prose a:hover { color: var(--navy); }

/* Inline + block code */
.prose code {
    font-family: var(--mono); font-size: 0.88em; background: var(--parchment);
    border: 1px solid var(--rule); border-radius: 4px; padding: 0.12em 0.4em; color: var(--oxblood);
}
.prose pre {
    background: var(--code-bg); color: #e6edf3; border-radius: var(--radius-lg);
    padding: 1.25rem 1.4rem; overflow-x: auto; margin: 1.6rem 0; font-size: 0.9rem; line-height: 1.6;
    border: 1px solid #1d2c44; box-shadow: var(--shadow);
}
.prose pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.6rem 0; font-size: 0.95rem; }
.prose th, .prose td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--rule); }
.prose th { font-family: var(--sans); font-size: 0.8rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); }

/* ─── Post footer ─────────────────────────────────────────── */
.post-footer { padding: 0 0 4.5rem; }
.post-footer .tag-row { justify-content: flex-start; margin-bottom: 2rem; }
.post-footer-nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; padding-top: 1.5rem; border-top: 1px solid var(--rule); }
.post-byline { font-family: var(--serif); font-style: italic; color: var(--muted); }

/* ─── Utility ─────────────────────────────────────────────── */
.text-center { text-align: center; }
.muted { color: var(--muted); }
.link-brass { color: var(--brass-2); }
.link-brass:hover { color: #fff; }
.narrow { max-width: 960px; margin-left: auto; margin-right: auto; }
.narrower { max-width: 760px; margin-left: auto; margin-right: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--navy); color: #fff; padding: 0.6rem 1rem; z-index: 100; }
.skip-link:focus { left: 0; }