/* Curve Calculator design system.

   Rails port (2026-08-24), following the cut sheet, the 811 tracker and the
   monument form. Lifted out of public/curve-calculator/index.html.

   SCOPED under .curve-calculator: this sheet carries .container, .btn, .card and
   .hero, all of which the shared header and footer also use.

   This tool does not print, so there is no @media print block to keep above
   the wrapper. If one is ever added, put it there: a body selector cannot
   match from inside the wrapper, which is how a sheet ends up printing grey. */

.curve-calculator{
  /* Tokens cine.css does not define, derived from the cine palette. Came from
     public/tools/shell.css when this was a static file. */
  --line-strong:#D8D7D2; --card:#ffffff; --field:#ffffff;
  --accent-bg:#FFFBEF; --accent-line:#F3DFA0;
  --shadow:0 1px 2px rgba(20,24,28,.04),0 10px 30px -18px rgba(20,24,28,.16);
  --shadow-lg:0 30px 70px -30px rgba(20,24,28,.35);
  --focus:#2C6FB0; --radius:14px;
  --paper:var(--bg); --surface:var(--card); --muted:var(--ink2); --gold-ink:var(--gold-text);

  /* The topbar is fixed, so the tool's own hero has to clear it. */
  .hero .inner{padding-top:calc(var(--head-h, 76px) + 30px)}

  /* padding:0 is a reset: cine.css pads .card by 30px, which is right for the
     site's content cards and wrong for these, which pad their own head and body. */
  .card{padding:0}
  .card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;
             padding:16px 22px;border-bottom:1px solid var(--line)}
  .card-head h2,.card-head h3{font-size:1.12rem}
  .card-head .lab{font-family:var(--head);font-size:.72rem;letter-spacing:.14em;
                  text-transform:uppercase;color:var(--gold-text);font-weight:700}
  .card-body{padding:22px}
  .fieldbox label{display:block;font-family:var(--body);font-weight:600;font-size:.72rem;
                  letter-spacing:.06em;text-transform:uppercase;color:var(--ink2);margin-bottom:6px}

  /* ===== "built on" + accordions + final CTA (canonical) ===== */
    .explain{background:var(--alt);border-top:1px solid var(--line);padding-block:64px}
    .explain .eyebrow{color:var(--gold-text)}
    .explain h2{font-family:var(--head);font-weight:800;font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.1;letter-spacing:-.02em;color:var(--ink);margin-top:12px;max-width:26ch}
    .g3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
    .xcard{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px}
    .xcard .ic{width:42px;height:42px;border-radius:11px;background:var(--accent-bg);color:var(--gold-text);display:flex;align-items:center;justify-content:center;margin-bottom:15px}
    .xcard .ic svg{width:22px;height:22px}
    .xcard h3{font-family:var(--head);font-weight:700;font-size:1.05rem;color:var(--ink);margin:0}
    .xcard p{color:var(--ink2);margin:8px 0 0;font-size:.94rem}
    .accstack{max-width:860px;margin:38px auto 0}
    details.accp{border-top:1px solid var(--line)}
    details.accp:last-child{border-bottom:1px solid var(--line)}
    details.accp>summary{display:flex;align-items:center;gap:12px;padding:22px 2px;list-style:none;cursor:pointer;user-select:none}
    details.accp>summary::-webkit-details-marker{display:none}
    details.accp>summary h3{margin:0;font-family:var(--head);font-weight:700;font-size:1.02rem;color:var(--ink)}
    .chev{margin-left:auto;width:20px;height:20px;color:var(--ink3);transition:transform .2s;flex:none}
    details[open]>summary .chev{transform:rotate(180deg)}
    summary:hover .chev{color:var(--ink)}
    .accp-body{padding:0 2px 26px;color:var(--ink2);font-size:.95rem}
    .accp-body p{margin:0 0 10px}
    .accp-body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--alt);padding:1px 6px;border-radius:5px;border:1px solid var(--line);color:var(--ink);font-size:.9rem}
    .accp-body ul{list-style:none;display:flex;flex-direction:column;gap:11px;margin:0;padding:0}
    .accp-body li{position:relative;padding-left:22px;font-size:.93rem;color:var(--ink2)}
    .accp-body li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--gold);transform:rotate(45deg)}
    .accp-body li b,.accp-body p b{color:var(--ink)}
    .final{text-align:center;padding-block:74px}
    .final .badge{width:52px;height:52px;border-radius:14px;background:var(--gold);color:#141518;display:flex;align-items:center;justify-content:center;margin:0 auto 22px;box-shadow:var(--shadow)}
    .final .badge svg{width:26px;height:26px}
    .final h2{font-family:var(--head);font-weight:800;font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.1;letter-spacing:-.02em;color:var(--ink);max-width:24ch;margin:0 auto}
    .final p{color:var(--ink2);margin-top:16px;font-size:1.06rem;max-width:38rem;margin-inline:auto}
    .final .btn{margin-top:26px}
    .final .tiny{display:block;margin-top:14px;font-size:.85rem;color:var(--ink3)}

    /* ===== tool-specific (curve calculator) ===== */
    .tabs{display:inline-flex;background:var(--alt);border:1px solid var(--line);border-radius:11px;padding:5px;gap:4px;margin-bottom:22px}
    .tab{font-weight:700;font-size:.92rem;color:var(--ink2);background:transparent;border:none;cursor:pointer;padding:.6rem 1.15rem;border-radius:8px;display:flex;align-items:center;gap:8px}
    .tab.active{background:var(--card);color:var(--ink);box-shadow:var(--shadow)}
    .tab svg{width:16px;height:16px}
    .panel{display:none}
    .panel.active{display:block}
    .grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .grid2 .full{grid-column:1 / -1}
    .resrow{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}
    .resrow:last-child{border-bottom:0}
    .resrow .rlab b{display:block;font-family:var(--head);font-weight:700;font-size:.92rem;color:var(--ink)}
    .resrow .rlab span{font-size:.75rem;color:var(--ink3)}
    .resrow .rval{font-family:var(--head);font-size:1.3rem;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;text-align:right;word-break:break-word}
    .catch{margin-top:2px;border:1px solid var(--accent-line);background:var(--accent-bg);border-radius:12px;padding:16px 18px}
    .catch .ctitle{font-family:var(--head);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;font-weight:800;color:var(--gold-text)}
    .catch .cbig{font-family:var(--head);font-size:1.35rem;font-weight:800;color:var(--ink);margin:5px 0 3px;font-variant-numeric:tabular-nums}
    .catch .csub{font-size:.9rem;color:var(--ink2)}
    .vtable-scroll{overflow:auto;max-height:520px;border:1px solid var(--line);border-radius:10px}
    .vtable{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
    .vtable th{position:sticky;top:0;background:var(--alt);font-family:var(--head);font-size:.68rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink2);font-weight:800;text-align:right;padding:11px 14px;border-bottom:1px solid var(--line-strong)}
    .vtable th:first-child{text-align:left}
    .vtable td{padding:9px 14px;border-bottom:1px solid var(--line);font-size:.95rem;color:var(--ink);text-align:right}
    .vtable td:first-child{text-align:left;font-family:var(--head);font-weight:600}
    .vtable tr:last-child td{border-bottom:0}
    .vtable tr.mark td{background:var(--accent-bg)}
    .vtable .tag{display:inline-block;font-family:var(--head);font-size:.58rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--gold-text);background:var(--accent-bg);border:1px solid var(--accent-line);border-radius:4px;padding:1px 5px;margin-left:8px;vertical-align:middle}
    .toolrow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:16px}
    .copybtn{font-family:var(--head);font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:8px 12px;border:1px solid var(--line-strong);border-radius:7px;background:transparent;color:var(--ink);cursor:pointer}
    .copybtn:hover{border-color:var(--gold)}
    .copybtn.done{color:var(--gold-text);border-color:var(--gold)}
    .diagram{width:100%;height:auto;display:block;margin-top:6px;background:var(--alt);border:1px solid var(--line);border-radius:10px}
    .diagram .tan{stroke:var(--ink3);stroke-width:2}
    .diagram .arc{stroke:var(--gold);stroke-width:3;fill:none}
    .diagram .dash{stroke:var(--line-strong);stroke-width:1.5;stroke-dasharray:5 5}
    .diagram .pt{fill:var(--ink)}
    .diagram text{font-family:var(--head);font-size:15px;fill:var(--ink2)}
    .diagram .lbl{fill:var(--ink);font-weight:700}
    .diagram .gold{fill:var(--gold-text);font-weight:700}
    .mini{font-size:.82rem;color:var(--ink3);margin-top:12px}

    @media(max-width:860px){ .nav-center{display:none} .head-inner{height:64px} .grid2{grid-template-columns:1fr} }
    @media(max-width:720px){ .g3{grid-template-columns:1fr} }
  .head-right .login:hover{color:var(--gold)}
}