/* ===== Tokens ===== */
:root {
  --bg: #f6f5f1;
  --surface: #ffffff;
  --ink: #14171b;
  --muted: #59606a;
  --line: #e2dfd7;
  --accent: #0c6b5d;
  --accent-soft: #e3f1ed;
  --on-accent: #ffffff;
  --shadow: 0 1px 2px rgba(20, 23, 27, .04), 0 8px 24px rgba(20, 23, 27, .05);
  --radius: 10px;
  --max: 1080px;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1014; --surface: #151a20; --ink: #e8eaed; --muted: #9aa3ad; --line: #262d36;
    --accent: #43c2aa; --accent-soft: #14302b; --on-accent: #06221d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1014; --surface: #151a20; --ink: #e8eaed; --muted: #9aa3ad; --line: #262d36;
  --accent: #43c2aa; --accent-soft: #14302b; --on-accent: #06221d;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 17px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
h1, h2, h3 { line-height: 1.2; margin: 0; letter-spacing: -.015em; }
h1 { font-size: clamp(2rem, 5.2vw, 3.35rem); font-weight: 600; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 600; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }
.mono { font-family: var(--mono); }
.eyebrow {
  font: 500 .78rem/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent);
}
.muted { color: var(--muted); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; gap: 12px 24px; flex-wrap: wrap;
  padding-top: 12px; padding-bottom: 12px;
}
.brand { font-weight: 600; color: var(--ink); text-decoration: none; margin-right: auto; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 20px; order: 3; width: 100%; }
.nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
@media (min-width: 720px) { .nav { order: 0; width: auto; gap: 28px; } }
.theme-btn {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); cursor: pointer;
  display: inline-grid; place-items: center;
}
.theme-btn svg { width: 18px; height: 18px; }
.theme-btn .moon { display: none; }
:root[data-theme="dark"] .theme-btn .sun { display: none; }
:root[data-theme="dark"] .theme-btn .moon { display: block; }

/* ===== Buttons ===== */
.btns { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 10px;
  font: 500 1rem/1 var(--sans); text-decoration: none; border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--surface); }
.btn-ghost:hover { border-color: var(--accent); }

/* ===== Sections ===== */
section { padding: 72px 0; }
.section-head { display: grid; gap: 12px; margin-bottom: 36px; max-width: 680px; }
.section-head p { color: var(--muted); }

/* Hero */
.hero { padding: 72px 0 40px; }
.hero .wrap { display: grid; gap: 24px; }
.hero h1 { max-width: 18ch; }
.hero .lead { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
@media (min-width: 720px) { .hero { padding: 112px 0 56px; } }

/* Stats board */
.board {
  display: grid; grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  overflow: hidden; box-shadow: var(--shadow);
}
.stat { padding: 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat:nth-child(2n) { border-right: 0; }
.stat:nth-last-child(-n+2) { border-bottom: 0; }
.stat b { display: block; font: 600 clamp(1.6rem, 4vw, 2.2rem)/1.1 var(--mono); color: var(--ink); }
.stat b small { font-size: .55em; font-weight: 500; color: var(--accent); margin-left: 2px; }
.stat span { display: block; margin-top: 6px; font-size: .9rem; color: var(--muted); }
@media (min-width: 860px) {
  .board { grid-template-columns: repeat(4, 1fr); }
  .stat { border-bottom: 0; }
  .stat:nth-child(2n) { border-right: 1px solid var(--line); }
  .stat:last-child { border-right: 0; }
}

/* Pillars */
.grid-2 { display: grid; gap: 16px; }
@media (min-width: 760px) { .grid-2 { grid-template-columns: 1fr 1fr; gap: 20px; } }
.pillar {
  padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  display: grid; gap: 10px; align-content: start;
}
.pillar .num { font: 500 .85rem/1 var(--mono); color: var(--accent); }
.pillar p { color: var(--muted); }

/* Projects */
.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.card {
  display: grid; gap: 14px; align-content: start; padding: 28px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg);
}
.card p { color: var(--muted); }
.card .meta { font: 500 .78rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.tags li {
  font: 500 .78rem/1 var(--mono); padding: 6px 9px; border-radius: 6px;
  background: var(--accent-soft); color: var(--ink);
}
.applies { font-size: .92rem; border-top: 1px dashed var(--line); padding-top: 14px; }
.applies strong { font-weight: 600; color: var(--ink); }
.card .more { font-weight: 500; text-decoration: none; }
.card .soon { font: 500 .85rem/1 var(--mono); color: var(--muted); }
.card.upcoming { background: transparent; border-style: dashed; }

/* How I work */
.grid-3 { display: grid; gap: 28px; }
@media (min-width: 860px) { .grid-3 { grid-template-columns: repeat(3, 1fr); gap: 36px; } }
.how { display: grid; gap: 10px; align-content: start; padding-top: 18px; border-top: 2px solid var(--accent); }
.how .step { font: 500 .78rem/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--accent); }

/* Status chip */
.status {
  display: inline-flex; align-items: center; gap: 10px; justify-self: start;
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface);
  font: 500 .85rem/1.3 var(--sans); color: var(--muted);
}
.status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.how p { color: var(--muted); }

/* Contact */
.contact {
  display: grid; gap: 20px; padding: 36px; border-radius: var(--radius);
  background: var(--accent-soft); border: 1px solid var(--line);
}
.contact p { max-width: 60ch; }
@media (min-width: 720px) { .contact { padding: 48px; } }

/* About page */
.about-hero { display: grid; gap: 28px; align-items: center; }
@media (min-width: 760px) { .about-hero { grid-template-columns: 160px 1fr; gap: 40px; } }
.avatar {
  width: 128px; height: 128px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--line);
  font: 600 2.4rem/1 var(--mono); overflow: hidden;
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 760px) { .avatar { width: 160px; height: 160px; } }
.prose { display: grid; gap: 18px; max-width: 66ch; font-size: 1.05rem; }
.skills { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.skill-row { display: grid; gap: 4px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.skill-row:last-child { border-bottom: 0; }
.skill-row dt { font: 500 .8rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--accent); }
.skill-row dd { margin: 0; }
@media (min-width: 720px) { .skill-row { grid-template-columns: 200px 1fr; gap: 20px; align-items: baseline; } }

/* Project page */
.back { font-size: .95rem; text-decoration: none; color: var(--muted); }
.back:hover { color: var(--accent); }
.facts { display: flex; flex-wrap: wrap; gap: 8px 28px; font-size: .95rem; color: var(--muted); }
.facts b { color: var(--ink); font-weight: 500; }
.shot { margin: 0; display: grid; gap: 12px; }
.shot img {
  width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: var(--shadow); background: #0d1014;
}
.shot a { display: block; }
.shot figcaption { font-size: .95rem; color: var(--muted); max-width: 70ch; }
.shot figcaption strong { color: var(--ink); font-weight: 600; }
.shots { display: grid; gap: 48px; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: s; max-width: 760px; }
.steps li {
  counter-increment: s; display: grid; grid-template-columns: 44px 1fr; gap: 4px 16px;
  padding: 20px 0; border-bottom: 1px solid var(--line);
}
.steps li:last-child { border-bottom: 0; }
.steps li::before { content: counter(s, decimal-leading-zero); font: 500 .9rem/1.8 var(--mono); color: var(--accent); grid-row: span 2; }
.steps li p { color: var(--muted); }
.lessons { display: grid; gap: 16px; max-width: 760px; }
.lesson { padding: 20px 24px; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 var(--radius) var(--radius) 0; }
.lesson p { color: var(--muted); margin-top: 6px; }
.note { font-size: .88rem; color: var(--muted); }
.next { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; align-items: center; }

/* Footer */
.site-footer { padding: 32px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; }