/* ==========================================================================
   MO_SITE — shared styles
   Palette:
     --void      #050507  base background, near-pure black
     --ink       #e9e9f2  primary text
     --dim       #83839c  muted text
     --gold      #f2c14e  accent — worked problems / achievement
     --blue      #6fa8ff  accent — links / in-progress
     --line      #1c1c26  hairline borders
   Type:
     display  "Space Grotesk"  — headings, big numbers
     body     "Inter"          — paragraphs, nav, UI
     mono     "IBM Plex Mono"  — scores, dates, tags, code-like labels
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --void: #050507;
  --void-2: #0a0a10;
  --ink: #e9e9f2;
  --dim: #83839c;
  --dim-2: #55556a;
  --gold: #f2c14e;
  --blue: #6fa8ff;
  --line: #1c1c26;
  --max: 880px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--void);
  color: var(--ink);
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* respect reduced motion everywhere */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ---------- starfield canvas ---------- */
#stars {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- shell / layout ---------- */
.shell {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 96px;
}

/* ---------- nav (constellation) ---------- */
.constellation-nav {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 28px 24px 20px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.02em;
}

.constellation-nav .mark {
  color: var(--gold);
  text-decoration: none;
  font-weight: 500;
}

.constellation-nav .mark::before {
  content: "✦ ";
}

.constellation-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.constellation-nav a {
  color: var(--dim);
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
  transition: color 0.2s ease;
}

.constellation-nav a:hover,
.constellation-nav a[aria-current="page"] {
  color: var(--ink);
}

.constellation-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--gold);
}

.constellation-nav a:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  z-index: 1;
  padding: 88px 0 64px;
  text-align: left;
}

.hero .eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 18px;
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
}

.hero h1 span {
  color: var(--gold);
}

.hero p.lede {
  max-width: 56ch;
  font-size: 1.1rem;
  color: var(--dim);
  margin: 0 0 34px;
}

.hero .actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13.5px;
  text-decoration: none;
  padding: 11px 20px;
  border-radius: 3px;
  border: 1px solid var(--line);
  color: var(--ink);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.btn.primary {
  background: var(--gold);
  color: #16130a;
  border-color: var(--gold);
  font-weight: 500;
}

.btn.primary:hover { background: #ffd873; border-color: #ffd873; }

.btn:not(.primary):hover {
  border-color: var(--dim-2);
  color: var(--gold);
}

/* ---------- sections ---------- */
section {
  position: relative;
  z-index: 1;
  margin-top: 72px;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.section-head .tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--gold);
}

.section-head h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
}

/* ---------- roadmap (constellation path) ---------- */
.roadmap {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.roadmap li {
  position: relative;
  padding: 4px 0 30px 30px;
}

.roadmap li::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--void);
  border: 1.5px solid var(--dim-2);
}

.roadmap li.done::before {
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 8px rgba(242, 193, 78, 0.6);
}

.roadmap li.active::before {
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 0 8px rgba(111, 168, 255, 0.6);
}

.roadmap .stage-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
}

.roadmap .stage-meta {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--dim);
  margin-top: 3px;
}

.roadmap .stage-note {
  color: var(--dim);
  font-size: 0.95rem;
  margin-top: 6px;
  max-width: 60ch;
}

/* ---------- stat grid ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.stat {
  background: var(--void);
  padding: 22px 18px;
}

.stat .num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
}

.stat .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11.5px;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 4px;
}

@media (max-width: 620px) {
  .stat-grid { grid-template-columns: 1fr; }
}

/* ---------- topic bars ---------- */
.topic-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.topic-bar .row {
  display: flex;
  justify-content: space-between;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12.5px;
  color: var(--dim);
  margin-bottom: 6px;
}

.topic-bar .track {
  height: 6px;
  background: var(--void-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.topic-bar .fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--gold));
}

/* ---------- prose / about ---------- */
.prose {
  max-width: 64ch;
}

.prose p {
  color: #cfcfe0;
  margin: 0 0 20px;
}

.prose p.lead {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.4;
}

.pull {
  border-left: 2px solid var(--gold);
  padding: 4px 0 4px 20px;
  margin: 34px 0;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  color: var(--ink);
}

/* ---------- card list (projects) ---------- */
.card-list {
  display: grid;
  gap: 14px;
}

.card {
  border: 1px solid var(--line);
  padding: 20px 22px;
  transition: border-color 0.2s ease;
}

.card:hover { border-color: var(--dim-2); }

.card .card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  margin: 0;
}

.card .status {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  color: var(--gold);
  white-space: nowrap;
}

.card p {
  color: var(--dim);
  font-size: 0.92rem;
  margin: 8px 0 0;
}

/* ---------- footer ---------- */
footer {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 96px auto 0;
  padding: 24px;
  border-top: 1px solid var(--line);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 12px;
  color: var(--dim-2);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}