/* Small Crew Software Guide — prototype styles. Mobile-first, no external assets. */
:root{
  --green:#14532d; --green-2:#166534; --ink:#1a202c; --muted:#4a5568;
  --bg:#ffffff; --soft:#f0fdf4; --line:#cbd5e0; --warn-bg:#fffbeb; --warn-line:#d69e2e;
  --error:#b91c1c; --radius:10px; --max:1080px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
a{color:var(--green-2);text-underline-offset:2px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid #2563eb;outline-offset:2px;border-radius:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--green);color:#fff;padding:.75rem 1rem;z-index:50}
.skip-link:focus{left:0;color:#fff}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1rem}
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.7rem 0}
.brand{font-weight:800;color:var(--green);text-decoration:none;font-size:1.08rem}
.brand small{display:block;font-weight:600;color:var(--muted);font-size:.72rem;letter-spacing:.02em}
.nav-toggle{min-height:44px;min-width:44px;padding:.55rem .9rem;border:2px solid var(--green);background:#fff;color:var(--green);border-radius:8px;font-weight:700;cursor:pointer}
.site-nav{display:none}
.site-nav.open{display:block;padding-bottom:.8rem}
.site-nav ul{list:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.25rem}
.site-nav a{display:block;padding:.65rem .5rem;min-height:44px;text-decoration:none;color:var(--ink);border-radius:6px}
.site-nav a:hover{background:var(--soft)}
.site-nav a[aria-current="page"]{font-weight:800;color:var(--green);background:var(--soft)}
main{padding:1.5rem 0 3rem}
h1{font-size:1.9rem;line-height:1.2;margin:.2rem 0 .8rem}
h2{font-size:1.35rem;line-height:1.3;margin:2rem 0 .6rem}
h3{font-size:1.1rem;margin:1.2rem 0 .4rem}
.lede{font-size:1.12rem;color:var(--muted);max-width:42rem}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:1rem;background:#fff;margin:1rem 0}
.card.soft{background:var(--soft)}
.notice{border-left:5px solid var(--warn-line);background:var(--warn-bg);padding:.8rem 1rem;border-radius:6px;margin:1rem 0}
.notice strong{display:block}
.draft{border:2px dashed var(--warn-line);background:var(--warn-bg);padding:.8rem 1rem;border-radius:6px;font-weight:700}
.btn{display:inline-block;min-height:44px;padding:.7rem 1.2rem;background:var(--green);color:#fff;text-decoration:none;border-radius:8px;font-weight:700;border:2px solid var(--green);cursor:pointer;font-size:1rem}
.btn:hover{background:var(--green-2)}
.btn.secondary{background:#fff;color:var(--green)}
.grid{display:grid;gap:1rem}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:1rem;margin:1.2rem 0}
legend{font-weight:800;padding:0 .4rem}
.field{margin:1rem 0}
label{font-weight:700;display:block;margin-bottom:.3rem}
.check{display:flex;gap:.6rem;align-items:flex-start;padding:.45rem 0}
.check input{width:22px;height:22px;margin-top:.2rem;flex:none}
.check label{font-weight:400;margin:0}
select,input[type="text"],input[type="email"],textarea{width:100%;min-height:44px;padding:.6rem;border:1.5px solid var(--muted);border-radius:6px;font:inherit;background:#fff}
.hint{color:var(--muted);font-size:.92rem}
.error-summary{border:2px solid var(--error);background:#fef2f2;padding:.8rem 1rem;border-radius:6px;margin:1rem 0}
.error-summary a{color:var(--error)}
.field-error{color:var(--error);font-weight:700;font-size:.95rem}
[aria-invalid="true"]{border-color:var(--error)!important}
table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.98rem}
caption{text-align:left;font-weight:800;padding:.4rem 0}
th,td{border:1px solid var(--line);padding:.6rem;text-align:left;vertical-align:top}
th{background:var(--soft)}
.table-scroll{overflow-x:auto}
.tag{display:inline-block;padding:.15rem .55rem;border-radius:999px;font-size:.82rem;font-weight:700;border:1px solid var(--green);color:var(--green);background:var(--soft)}
.tag.unverified{border-color:var(--warn-line);background:var(--warn-bg);color:#744210}
.results{border:2px solid var(--green);border-radius:var(--radius);padding:1rem;margin-top:1.5rem}
.results:empty{display:none}
.site-footer{border-top:1px solid var(--line);background:#f7fafc;padding:1.5rem 0 2.5rem;color:var(--muted);font-size:.95rem}
.site-footer ul{list-style:none;padding:0;margin:.5rem 0;display:flex;flex-wrap:wrap;gap:.4rem 1.2rem}
.site-footer a{padding:.4rem 0;display:inline-block}
@media (min-width:640px){
  .grid.two{grid-template-columns:1fr 1fr}
  h1{font-size:2.3rem}
}
@media (min-width:900px){
  .nav-toggle{display:none}
  .site-nav{display:block}
  .site-nav ul{flex-direction:row;gap:.2rem}
  .site-nav a{padding:.55rem .7rem}
  .grid.three{grid-template-columns:repeat(3,1fr)}
  .header-in{padding:.9rem 0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}