/* microprojects.net — community build-hub. Violet identity, dark, mobile-first. */

:root {
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --accent: #a371f7;
  --accent-dim: rgba(163, 113, 247, 0.15);
  --accent-border: rgba(163, 113, 247, 0.25);
  --ok: #3fb950;
  --bg: #0a0a0a;
  --bg-alt: #0f1117;
  --bg-card: #141820;
  --bg-card-hover: #1a2030;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --border: rgba(255, 255, 255, 0.08);
  --nav-bg: rgba(10, 10, 10, 0.92);
  --shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
  --radius: 10px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; overflow-x: hidden; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  max-width: 100%;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img, svg { max-width: 100%; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--accent); color: #0a0a0a;
  padding: 8px 14px; border-radius: 0 0 6px 0; z-index: 100; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* Nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  background: var(--nav-bg); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav-logo { font-family: var(--font-mono); font-weight: 700; font-size: 1.05rem; color: var(--text); }
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--text-dim); font-size: 0.92rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--border); color: var(--text);
  width: 44px; height: 44px; border-radius: 8px; cursor: pointer; font-size: 1.1rem;
}

/* Hero */
.hero { padding: 130px 0 70px; text-align: center; background:
  radial-gradient(ellipse at 50% 0%, rgba(163,113,247,0.08) 0%, transparent 55%); }
.hero h1 { font-size: clamp(2rem, 6vw, 3.4rem); line-height: 1.1; letter-spacing: -0.02em; }
.hero h1 .accent { color: var(--accent); }
.hero-tag { font-family: var(--font-mono); color: var(--accent); font-size: 0.8rem;
  letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 18px; }
.hero-sub { color: var(--text-dim); font-size: clamp(1rem, 2.4vw, 1.2rem); max-width: 640px;
  margin: 20px auto 0; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }

.btn { display: inline-block; padding: 11px 22px; border-radius: 8px; font-weight: 600;
  font-size: 0.92rem; cursor: pointer; border: 1px solid transparent; transition: all .15s ease; }
.btn-primary { background: var(--accent); color: #0a0a0a; }
.btn-primary:hover { text-decoration: none; box-shadow: 0 0 22px rgba(163,113,247,0.35); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { text-decoration: none; border-color: var(--accent-border); background: var(--accent-dim); }

/* Sections */
.section { padding: 64px 0; border-top: 1px solid var(--border); }
.section-title { font-size: clamp(1.5rem, 4vw, 2rem); letter-spacing: -0.01em; }
.section-title .n { font-family: var(--font-mono); color: var(--accent); font-size: 0.7em; margin-right: 10px; }
.section-lead { color: var(--text-dim); margin: 10px 0 30px; max-width: 680px; }

/* Path cards (start here) */
.paths { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.path-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; transition: all .15s ease; }
.path-card:hover { border-color: var(--accent-border); background: var(--bg-card-hover); transform: translateY(-2px); text-decoration: none; }
.path-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.path-card p { color: var(--text-dim); font-size: 0.9rem; }
.path-card .ico { font-size: 1.6rem; margin-bottom: 10px; }

/* Project + firmware cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.card:hover { border-color: var(--accent-border); }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.card-head h3 { font-size: 1.1rem; }
.badge { font-family: var(--font-mono); font-size: 0.68rem; padding: 3px 8px; border-radius: 20px;
  background: var(--accent-dim); color: #c4a5ff; border: 1px solid var(--accent-border); white-space: nowrap; }
.badge.stable { background: rgba(63,185,80,0.12); color: var(--ok); border-color: rgba(63,185,80,0.25); }
.card p { color: var(--text-dim); font-size: 0.9rem; flex: 1; }
.card-links { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.85rem; font-family: var(--font-mono); }
.card-links a, .footer-inner a { display: inline-block; padding: 5px 0; }  /* >=24px tap target (WCAG 2.5.8) */

/* Firmware table */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; min-width: 520px; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
thead th { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.5px; color: var(--text-dim); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--accent-dim); }
td code { font-family: var(--font-mono); font-size: 0.82rem; color: var(--accent); }

/* Detail/accordion (hardware notes, faq) */
details { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 4px 18px; margin-bottom: 12px; }
summary { cursor: pointer; padding: 14px 0; font-weight: 600; list-style: none; display: flex;
  align-items: center; gap: 10px; }
summary::-webkit-details-marker { display: none; }
summary::before { content: '\25B8'; color: var(--accent); font-size: 0.8em; transition: transform .15s ease; }
details[open] summary::before { transform: rotate(90deg); }
details .body { padding: 0 0 16px; color: var(--text-dim); font-size: 0.92rem; }
details .body ul { padding-left: 20px; }

/* Note / honesty banner */
.note { background: var(--accent-dim); border: 1px solid var(--accent-border); border-radius: var(--radius);
  padding: 16px 18px; color: var(--text-dim); font-size: 0.9rem; }
.note strong { color: var(--text); }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 40px 0; color: var(--text-dim); font-size: 0.88rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer a { color: var(--text-dim); }
.footer a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 760px) {
  .nav-links { position: fixed; top: 60px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--nav-bg); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border);
    padding: 8px 20px 16px; display: none; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; width: 100%; border-bottom: 1px solid var(--border); font-size: 1rem; }
  .nav-toggle { display: block; }
  .paths { grid-template-columns: 1fr; }
  .hero { padding: 110px 0 50px; }
  .section { padding: 48px 0; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}