/* ---------- Themes (A Slate, B Paper, C Carbon) ---------- */
:root, [data-theme="slate"] {
  --bg: #0d1117; --bg-2: #121821; --panel: #161d27; --line: #263140;
  --text: #e8edf2; --muted: #9eabb8; --head: #ffffff;
  --accent: #4da3ff; --accent-hi: #7cbcff; --on-accent: #06121f;
  --logo: #ffffff; --glow: rgba(77,163,255,.14);
  --head-font: var(--sans); --head-weight: 650; --track: -.02em;
  color-scheme: dark;
}
[data-theme="paper"] {
  --bg: #f6f5f1; --bg-2: #eeece6; --panel: #ffffff; --line: #dcd9d1;
  --text: #2a2a28; --muted: #62605a; --head: #121212;
  --accent: #1f5c4a; --accent-hi: #17483a; --on-accent: #ffffff;
  --logo: #161616; --glow: rgba(31,92,74,.07);
  --head-font: var(--serif); --head-weight: 500; --track: -.01em;
  color-scheme: light;
}
[data-theme="carbon"] {
  --bg: #050505; --bg-2: #0e0e0e; --panel: #111111; --line: #2a2a2a;
  --text: #f2f2f2; --muted: #a6a6a6; --head: #ffffff;
  --accent: #ffffff; --accent-hi: #dcdcdc; --on-accent: #050505;
  --logo: #ffffff; --glow: rgba(255,255,255,.06);
  --head-font: var(--serif); --head-weight: 400; --track: -.015em;
  color-scheme: dark;
}
:root {
  --radius: 10px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Segoe UI Variable Display", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; transition: background .25s, color .25s; }
h1, h2, h3 { color: var(--head); line-height: 1.18; margin: 0 0 .5em; }
h1, h2 { font-family: var(--head-font); font-weight: var(--head-weight); letter-spacing: var(--track); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.35rem); }
h3 { font-size: 1.08rem; font-weight: 650; }
p { margin: 0 0 1em; }
a { color: var(--accent-hi); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }
.eyebrow { text-transform: uppercase; letter-spacing: .16em; font-size: .72rem; font-weight: 650; color: var(--accent); margin-bottom: .9em; }
[data-theme="carbon"] .eyebrow { color: var(--muted); }

/* ---------- Header (real wordmark, recoloured via mask) ---------- */
.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.top-in { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: block; width: 230px; height: 35px; background: var(--logo); -webkit-mask: url(logo.png) left center / contain no-repeat; mask: url(logo.png) left center / contain no-repeat; }
nav { display: flex; align-items: center; gap: 28px; }
nav a { color: var(--muted); text-decoration: none; font-size: .92rem; }
nav a:hover { color: var(--head); }
.btn-sm { color: var(--head) !important; border: 1px solid var(--line); padding: 6px 15px; border-radius: 999px; }
.btn-sm:hover { border-color: var(--accent); }
@media (max-width: 680px) { nav a:not(.btn-sm) { display: none; } .brand { width: 160px; height: 25px; } }

/* ---------- Buttons ---------- */
.btn { display: inline-block; background: var(--accent); color: var(--on-accent); text-decoration: none; font-weight: 650; padding: 12px 22px; border-radius: 8px; transition: background .15s; }
.btn:hover { background: var(--accent-hi); }
.btn.ghost { background: transparent; color: var(--head); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--accent); }
.btn.big { font-size: 1.05rem; padding: 16px 26px; overflow-wrap: anywhere; }

/* ---------- Hero ---------- */
.hero { background: radial-gradient(900px 440px at 90% -10%, var(--glow), transparent 62%), var(--bg); padding: 110px 0 80px; }
.hero h1 { font-size: clamp(2.4rem, 5.8vw, 4.3rem); max-width: 16ch; margin-bottom: .4em; }
.lede { font-size: clamp(1.05rem, 1.8vw, 1.22rem); color: var(--muted); max-width: 60ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 56px; }
.skills { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; margin: 0; padding: 28px 0 0; border-top: 1px solid var(--line); }
.skills li { border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; font-size: .88rem; color: var(--text); background: var(--panel); }
@media (max-width: 700px) { .hero { padding: 68px 0 52px; } }

/* ---------- Name definition: quiet line at the top of the hero ---------- */
.define-line { margin: -56px 0 64px; font-family: var(--serif); font-style: italic; font-size: .92rem; color: var(--muted); opacity: .7; max-width: 70ch; }
.define-line span[lang] { font-style: normal; color: var(--text); letter-spacing: .02em; }
.dl-pos { font-family: var(--sans); font-style: normal; font-size: .78rem; }
@media (max-width: 700px) { .define-line { margin: -32px 0 40px; font-size: .86rem; } }
.example { border-left: 2px solid var(--accent); padding-left: 14px; font-size: .95rem; }
.example strong { color: var(--head); font-weight: 600; }

/* ---------- Sections ---------- */
.section { padding: 92px 0; }
.section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.note { color: var(--muted); margin-top: -.4em; }
.grid { display: grid; gap: 20px; margin-top: 38px; }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); column-gap: 32px; row-gap: 36px; }
@media (max-width: 980px) { .grid.four, .grid.three { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid.four, .grid.three { grid-template-columns: 1fr; } .section { padding: 64px 0; } }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; transition: border-color .2s; }
.card:hover { border-color: var(--accent); }
.card .num { display: block; font-family: var(--serif); color: var(--accent); font-size: 1.1rem; margin-bottom: 14px; }
[data-theme="carbon"] .card .num { color: var(--muted); }
.card p { color: var(--muted); font-size: .95rem; margin: 0; }

.work { border-top: 1px solid var(--line); padding-top: 16px; position: relative; }
.work::before { content: ""; position: absolute; top: -1px; left: 0; width: 40px; height: 2px; background: var(--accent); }
.work .tag { font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); font-weight: 650; margin-bottom: .5em; }
[data-theme="carbon"] .work .tag { color: var(--muted); }
.work p:last-child { color: var(--muted); font-size: .95rem; }

/* ---------- Tools band ---------- */
.tools { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.tools p { color: var(--muted); }
.tools-in { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: center; }
.checks { list-style: none; margin: 0; padding: 0; }
.checks li { padding: 13px 0 13px 30px; border-bottom: 1px solid var(--line); position: relative; }
.checks li::before { content: ""; position: absolute; left: 4px; top: 21px; width: 9px; height: 9px; transform: rotate(45deg); background: var(--accent); }
@media (max-width: 860px) { .tools-in { grid-template-columns: 1fr; gap: 24px; } }

/* ---------- People ---------- */
.people { display: grid; grid-template-columns: minmax(0, 760px); gap: 24px; margin-top: 34px; }
.person { display: flex; gap: 22px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.avatar { flex: none; width: 58px; height: 58px; border-radius: 50%; border: 1px solid var(--line); color: var(--head); display: grid; place-items: center; font-family: var(--serif); font-size: 1.1rem; }
.role { color: var(--accent); font-size: .9rem; font-weight: 650; margin-top: -.3em; }
[data-theme="carbon"] .role { color: var(--muted); }
.person p:not(.role) { color: var(--muted); font-size: .97rem; }
@media (max-width: 480px) { .person { flex-direction: column; } }

/* ---------- Contact & footer ---------- */
.contact-in { display: flex; justify-content: space-between; align-items: center; gap: 32px; flex-wrap: wrap; }
.contact p { color: var(--muted); max-width: 52ch; margin: 0; }
.foot { border-top: 1px solid var(--line); color: var(--muted); font-size: .86rem; padding: 26px 0 80px; }
.foot-in { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }