/* Wellhead & Christmas tree simulator (oilgaslibrary.com, r23) */
*{box-sizing:border-box}
html,body{margin:0;background:#F2EFE7;color:#1b232b;font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Arabic",Tahoma,sans-serif}
.wh{max-width:1100px;margin:0 auto;padding:8px}
.wh button{font:inherit;cursor:pointer;touch-action:manipulation}
.wh-b{min-height:40px;padding:6px 12px;border:1.5px solid #1b232b;border-radius:10px;background:#fffdf8;color:#1b232b;font-weight:700}
.wh-b:active{transform:translateY(1px)}
.wh-b:focus-visible,.wh-v:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #f5a524;outline-offset:2px}
.wh-bar{display:grid;grid-template-columns:1fr 1fr;gap:8px;align-items:end;margin-bottom:8px}
.wh-sel{display:flex;flex-direction:column;gap:2px;font-size:12px;font-weight:700;color:#4a535b;min-width:0}
.wh-sel select{min-height:40px;width:100%;border:1.5px solid #1b232b;border-radius:10px;background:#fffdf8;font:inherit;font-size:14px;padding:4px 8px;color:#1b232b}
.wh-esd{background:#c0392b;color:#fff;border-color:#6e1712;letter-spacing:.06em}
.wh-esd.on{background:#f1c40f;color:#1b232b;border-color:#7a5a0e}
.wh-guide{background:#1d2a26;color:#e9fff1;border-radius:12px;padding:10px 12px;margin-bottom:8px;font-size:14px}
.wh-guide b{color:#8af0ae}
.wh-gbar{height:5px;background:#33463f;border-radius:4px;margin-top:8px;overflow:hidden}.wh-gbar i{display:block;height:100%;width:0;background:#8af0ae;transition:width .4s}
.wh-fig{position:relative;border:1.5px solid #1b232b;border-radius:14px;overflow:hidden;background:#F2EFE7}
.wh-fig svg{display:block;width:100%;height:auto;aspect-ratio:138/192;max-height:86vh;touch-action:pan-y;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}
.wh-fig.zoomed svg{cursor:grab}
.wh-fig [data-c]{cursor:pointer}
.wh-ftb{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px}
.wh-zoom{display:flex;gap:6px}
.wh-zoom button{width:42px;height:42px;border:1.5px solid #1b232b;border-radius:10px;background:rgba(255,253,248,.94);font-size:20px;font-weight:800;line-height:1;color:#1b232b}
.wh-tg{display:flex;flex-wrap:wrap;gap:6px;font-size:12px;font-weight:700}
.wh-tg label{background:rgba(255,253,248,.94);border:1.5px solid #1b232b;border-radius:999px;padding:5px 10px;display:flex;align-items:center;gap:6px;min-height:34px}
.wh-tg input{width:18px;height:18px;margin:0;accent-color:#1b232b}
.wh-toast{position:absolute;left:8px;right:8px;bottom:8px;padding:10px 12px;border-radius:12px;font-size:13.5px;font-weight:600;opacity:0;transform:translateY(8px);transition:opacity .2s,transform .2s;pointer-events:none;border:1.5px solid #1b232b}
.wh-toast.on{opacity:1;transform:none}
.wh-toast.warn{background:#fff1d6;color:#5a3a00;border-color:#b5781a}
.wh-toast.ok{background:#e6f6ea;color:#1d4d2b;border-color:#3f8f56}
.wh[dir=rtl] .wh-toast{direction:rtl}
.nosec #fo-lmv,.nosec #fo-swab{opacity:1}
#fo-lmv,#fo-swab{opacity:.55;transition:opacity .25s}

.wh-hint{font-size:12.5px;color:#5c646b;margin:6px 2px 8px}
.wh-read{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:8px}
.wh-r{background:#fffdf8;border:1.5px solid #1b232b;border-radius:10px;padding:6px 8px;min-width:0}
.wh-r span{display:block;font-size:11px;font-weight:800;color:#56606a;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.wh-r b{display:block;font-size:16px;font-variant-numeric:tabular-nums;white-space:nowrap}
.wh-r i{display:block;font-style:normal;font-size:11.5px;color:#56606a;font-variant-numeric:tabular-nums}
.wh-r.hi{background:#fde3df;border-color:#b0281d}
.wh-ck{background:#fffdf8;border:1.5px solid #1b232b;border-radius:12px;padding:8px 10px;margin-bottom:8px}
.wh-ckh{display:flex;flex-wrap:wrap;gap:6px 10px;align-items:center;font-size:14px}
.wh-ill{font-size:10.5px;font-weight:800;letter-spacing:.08em;background:#1b232b;color:#fff;border-radius:999px;padding:2px 8px}
.wh-reg{font-size:12px;color:#56606a}
.wh-ckr{display:flex;align-items:center;gap:8px;margin-top:6px}
.wh-ckr input{flex:1;min-width:0;height:36px;accent-color:#1b232b}
.wh-ckr .wh-b{min-width:52px}
.wh-sec{margin:10px 0}
.wh-sec h3{font-size:14px;margin:0 0 6px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.wh-vb{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.wh-v{min-height:52px;border:1.5px solid #1b232b;border-radius:10px;background:#f6dcd7;color:#1b232b;padding:4px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;font-size:12px;line-height:1.2;text-align:center}
.wh-v b{font-size:12.5px}.wh-v span{font-size:10.5px;font-weight:700;letter-spacing:.04em}
.wh-v.on{background:#d5f0dc}
.wh-v.mv{background:#fbeccb}
.wh-v.wh-x{background:#eef0f1}.wh-v.wh-x.on{background:#d5f0dc}
.wh-v.nx{box-shadow:0 0 0 3px #f5a524;animation:whp 1.2s infinite}
@keyframes whp{50%{box-shadow:0 0 0 5px rgba(245,165,36,.35)}}
.wh-ann{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}
.wh-t{font:800 11px/1.15 ui-monospace,Menlo,Consolas,monospace;letter-spacing:.03em;text-align:center;padding:8px 4px;border-radius:6px;background:#2b3137;color:#5f6870;border:1px solid #11161a;min-height:34px;display:flex;align-items:center;justify-content:center}
.wh-t.on.st{background:#1e6b3a;color:#dfffe9}
.wh-t.on.am{background:#d49a1c;color:#231700}
.wh-t.on.rd{background:#b0281d;color:#fff}
.wh-t.bl{animation:whb .9s steps(2) infinite}
@keyframes whb{50%{filter:brightness(1.45)}}
.wh-ack{min-height:34px;padding:4px 14px}
.wh-info{background:#fffdf8;border:1.5px solid #1b232b;border-radius:12px;padding:10px 12px}
.wh-info h3{font-size:15px}
.wh-info dl{margin:0}.wh-info dt{font-weight:800;font-size:12.5px;color:#56606a;margin-top:8px;text-transform:uppercase;letter-spacing:.03em}.wh-info dd{margin:2px 0 0;font-size:14px}
.wh-ins{float:right;width:118px;margin:0 0 6px 10px;text-align:center}
.wh[dir=rtl] .wh-ins{float:left;margin:0 10px 6px 0}
.wh-ins small{font-size:10.5px;color:#56606a}
.wh-gsec{width:100%;height:auto;display:block;background:#F2EFE7;border-radius:8px}
#w-ig{transition:transform .1s linear}
.wh-note{font-size:12.5px;color:#4a535b;margin:8px 2px}
.wh-scp{border-inline-start:4px solid #b0281d;padding-inline-start:8px}
@media (min-width:560px){.wh-bar{grid-template-columns:1fr 1fr auto auto}.wh-read{grid-template-columns:repeat(6,1fr)}.wh-ann{grid-template-columns:repeat(4,1fr)}.wh-vb{grid-template-columns:repeat(6,1fr)}}
@media (min-width:900px){.wh-main{display:grid}.wh-fig svg{max-height:92vh}}
@media (prefers-reduced-motion:reduce){.wh-t.bl,.wh-v.nx{animation:none}}