/* marketing/assets/tools/tools.css - /tools/ page only.
   External file on purpose: the site CSP allows 'self' stylesheets, so the
   page needs no new sha256 hash (the inline-hash route has broken the live
   homepage before). Panel look lifted from marketing/index.html (.panel,
   .panel-head, .boot dotted leaders, .rag glow) per DESIGN.md. Dark moments on
   this page: the two calculator screens + the footer = DESIGN.md's max of 3. */
:root{
  --green:#27AE60; --amber:#D97706; --red:#DC2626; --teal:#17687B;
  --dk-panel:#0F2A4E; --dk-green:#3ECF7F; --dk-teal:#5BC2D6; --dk-red:#F87171; --dk-amber:#FBBF24;
}
.wrap.wide{max-width:1120px}
@media(max-width:700px){.wrap.wide{padding:0 16px}}

/* graph paper behind the header, as on the homepage */
.grid-bg{position:relative}
.grid-bg::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(10,35,66,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(10,35,66,.045) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(to bottom,transparent,black 18%,black 80%,transparent);
  -webkit-mask-image:linear-gradient(to bottom,transparent,black 18%,black 80%,transparent)}
.grid-bg > *{position:relative}

.lede{font-size:1.08rem;color:var(--t2);margin-top:14px;max-width:62ch}
.jump{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 4px}
.jump a{display:inline-flex;align-items:center;gap:9px;font-size:.74rem;letter-spacing:.12em;font-weight:700;text-transform:uppercase;text-decoration:none;color:var(--ink);border:1.5px solid var(--line2);border-radius:6px;padding:.85em 1.15em;background:var(--surface);min-height:44px;transition:border-color .2s,transform .2s}
.jump a:hover{border-color:var(--accent-ink);transform:translateY(-1px)}
.jump a i{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 8px rgba(39,174,96,.6)}

/* ── a calculator = a device: light controls + dark screen ── */
.device{scroll-margin-top:90px;margin:44px 0}
.device-head{margin-bottom:16px}
.device-head .code{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;font-weight:700;color:var(--accent-ink)}
.device-head h2{font-size:clamp(1.5rem,3vw,1.9rem);font-weight:700;letter-spacing:-.012em;color:var(--ink);margin:.25rem 0 .35rem}
.device-head p{color:var(--t2);max-width:70ch}
.device-body{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:22px;align-items:start}
@media(max-width:900px){.device-body{grid-template-columns:1fr}}

.controls{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:6px 24px 20px;box-shadow:0 1px 2px rgba(10,35,66,.05)}
@media(max-width:700px){.controls{padding:4px 16px 16px}}
fieldset{border:0;border-top:1px solid var(--line);padding:16px 0 4px;margin:0}
fieldset:first-child{border-top:0}
legend{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--accent-ink);padding:10px 10px 0 0}
.row{display:grid;grid-template-columns:1fr 170px;gap:8px 16px;align-items:center;margin:12px 0}
@media(max-width:560px){.row{grid-template-columns:1fr}}
.row label{font-weight:700;color:var(--ink);font-size:.97rem;line-height:1.35}
.hint{display:block;font-weight:400;color:var(--t2);font-size:.86rem;margin-top:3px;line-height:1.45}
input[type=number],input[type=text]{width:100%;font-family:inherit;font-size:1rem;color:var(--ink);background:#fff;border:1.5px solid var(--line2);border-radius:8px;padding:10px 12px;min-height:44px;font-variant-numeric:tabular-nums}
input[type=number]:focus,input[type=text]:focus{border-color:var(--accent-ink);outline:none;box-shadow:0 0 0 3px rgba(27,125,69,.12)}
.unit{position:relative}
.unit input{padding-right:46px}
.unit span{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:.78rem;letter-spacing:.06em;font-weight:700;color:var(--t3);pointer-events:none}

.choices{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0 6px}
@media(max-width:560px){.choices{grid-template-columns:1fr}}
.choice{position:relative;display:block;border:1.5px solid var(--line2);border-radius:10px;padding:11px 13px;cursor:pointer;background:#fff;min-height:44px;transition:border-color .2s}
.choice:hover{border-color:var(--t3)}
.choice input{position:absolute;opacity:0;pointer-events:none}
.choice b{display:block;color:var(--ink);font-size:.97rem}
.choice small{display:block;color:var(--t2);font-size:.83rem;line-height:1.35;margin-top:2px}
.choice:has(input:checked){border-color:var(--accent-ink);box-shadow:inset 0 0 0 1px var(--accent-ink);background:#F4FBF7}
.choice:has(input:focus-visible){outline:2px solid var(--accent-ink);outline-offset:2px}
.check{display:flex;gap:12px;align-items:flex-start;margin:12px 0;cursor:pointer;color:var(--ink);font-size:.97rem;font-weight:700;line-height:1.35}
.check input{width:20px;height:20px;margin-top:2px;flex:none;accent-color:var(--accent-ink);cursor:pointer}
[hidden]{display:none!important}

.seg{display:inline-flex;border:1.5px solid var(--line2);border-radius:8px;overflow:hidden;margin:10px 0 4px}
.seg button{font-family:inherit;font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;padding:.8em 1.1em;border:0;background:#fff;color:var(--t2);cursor:pointer;min-height:44px}
.seg button + button{border-left:1.5px solid var(--line2)}
.seg button[aria-pressed=true]{background:var(--ink);color:#fff}

.scroll{overflow-x:auto;margin:8px -4px 0;padding:0 4px}
.loads{width:100%;border-collapse:collapse;font-size:.93rem;min-width:470px}
.loads th{text-align:left;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--t2);font-weight:700;padding:6px 4px;border-bottom:1px solid var(--line);white-space:nowrap}
.loads th.n{text-align:right}
.loads td{padding:5px 4px;border-bottom:1px solid var(--line);vertical-align:middle}
.loads td.n{text-align:right;white-space:nowrap;color:var(--t2);font-variant-numeric:tabular-nums}
.loads input{min-height:40px;padding:7px 9px;font-size:.93rem}
.loads .q{width:64px}
.loads .ma{width:92px}
.loads tfoot td{font-weight:700;color:var(--ink);border-bottom:0;padding-top:9px}
.loads button.del{font-family:inherit;border:0;background:none;color:var(--t3);font-size:1.15rem;cursor:pointer;width:36px;height:36px;border-radius:6px}
.loads button.del:hover{color:var(--red);background:#FEF2F2}
.btn-line{font-family:inherit;font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;border:1.5px solid var(--line2);background:#fff;color:var(--ink);border-radius:6px;padding:.8em 1.1em;cursor:pointer;min-height:44px;margin-top:8px}
.btn-line:hover{border-color:var(--accent-ink)}
.small{font-size:.86rem;color:var(--t2);margin:8px 0}

/* ── the screen: dark panel, straight from the homepage ── */
.screen{position:sticky;top:86px;background:linear-gradient(160deg,var(--dk-panel),var(--dk2));color:var(--dk-text);border:1px solid var(--dk-line2);border-radius:14px;overflow:hidden;box-shadow:0 30px 70px rgba(10,35,66,.30),inset 0 1px 0 rgba(255,255,255,.06)}
@media(max-width:900px),(max-height:820px){.screen{position:static}}
.screen-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 18px;border-bottom:1px solid var(--dk-line);font-size:.66rem;letter-spacing:.16em;font-weight:700;text-transform:uppercase;color:var(--dk-t2)}
.screen-head .live{display:flex;align-items:center;gap:7px;color:var(--dk-green)}
.screen-head .live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);animation:led 1.6s infinite}
.lcd{margin:16px 18px 6px;padding:16px 18px 14px;border-radius:10px;background:rgba(3,12,24,.55);border:1px solid var(--dk-line);box-shadow:inset 0 2px 10px rgba(0,0,0,.35)}
.lcd .cap{font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--dk-t2)}
.lcd .fig{display:flex;align-items:baseline;gap:10px;margin-top:4px;flex-wrap:wrap}
.lcd .num{font-size:clamp(2.6rem,6vw,3.4rem);font-weight:700;line-height:1;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.01em;text-shadow:0 0 18px rgba(62,207,127,.25)}
.lcd .num.idle{color:var(--dk-t3);text-shadow:none}
.lcd .u{font-size:1.05rem;font-weight:700;color:var(--dk-t2)}
.lcd .sub{margin-top:6px;font-size:.9rem;color:var(--dk-t2)}
.lcd .sub b{color:var(--dk-green)}
.ro{padding:6px 18px 4px;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--dk-t2);line-height:2.05}
.ro .ln{display:flex;align-items:baseline;gap:10px;white-space:nowrap}
.ro .dots{flex:1;border-bottom:1px dotted var(--dk-t3);transform:translateY(-5px);min-width:14px}
.ro .ln b{color:var(--dk-text);font-weight:700;font-variant-numeric:tabular-nums}
.ro .ln b.ok{color:var(--dk-green)} .ro .ln b.warn{color:var(--dk-amber)} .ro .ln b.bad{color:var(--dk-red)}
.working{margin:8px 18px 14px;padding:10px 12px;border-radius:8px;border:1px dashed var(--dk-line2);font-size:.9rem;color:var(--dk-text);overflow-x:auto;white-space:nowrap;font-variant-numeric:tabular-nums}
.working .k{display:block;font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--dk-t3);margin-bottom:3px}
.notes{padding:0 18px 12px;font-size:.86rem;color:var(--dk-t2);line-height:1.5}
.notes p{margin:6px 0}
.notes b{color:var(--dk-text)}
.notes .w{color:var(--dk-amber)}
.screen-foot{border-top:1px solid var(--dk-line);padding:11px 18px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:.62rem;letter-spacing:.13em;color:var(--dk-t2);text-transform:uppercase;font-weight:700}
.screen-foot b{color:var(--dk-green)}

/* indicator lamps, like the LEDs on a control panel */
.lamps{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:12px 18px 6px}
.lamp{border:1px solid var(--dk-line);border-radius:8px;padding:10px 8px;text-align:center;background:rgba(3,12,24,.35)}
.lamp i{display:block;width:14px;height:14px;border-radius:50%;margin:0 auto 7px;background:#1E3556;box-shadow:inset 0 1px 2px rgba(0,0,0,.5)}
.lamp span{display:block;font-size:.6rem;letter-spacing:.13em;text-transform:uppercase;font-weight:700;color:var(--dk-t3);line-height:1.3}
.lamp.on span{color:var(--dk-text)}
.lamp.on.review i{background:var(--dk-teal);box-shadow:0 0 10px rgba(91,194,214,.75)}
.lamp.on.prelim i{background:var(--dk-amber);box-shadow:0 0 12px rgba(251,191,36,.75)}
.lamp.on.deep i{background:var(--red);box-shadow:0 0 12px rgba(248,113,113,.85);animation:led 1.2s infinite}
.why{list-style:none;margin:4px 18px 12px;padding:0}
.why li{padding:7px 0;border-top:1px dotted var(--dk-line2);font-size:.88rem;color:var(--dk-t2);line-height:1.45}
.why li b{color:var(--dk-text)}
.why .clause{display:inline-block;font-size:.6rem;letter-spacing:.12em;font-weight:700;text-transform:uppercase;color:var(--dk-green);border:1px solid rgba(62,207,127,.35);border-radius:4px;padding:1px 6px;margin-right:6px;white-space:nowrap}
.why .clause.a{color:var(--dk-amber);border-color:rgba(251,191,36,.4)}
.why .clause.r{color:var(--dk-red);border-color:rgba(248,113,113,.45)}

/* light footnotes + CTA (the page's dark budget is spent on the screens) */
.fine{font-size:.92rem;color:var(--t2);max-width:78ch}
.fine h2{font-size:1.2rem;color:var(--ink);margin:0 0 .6rem}
.fine p{margin-bottom:.9em}
.fine ul{margin:0 0 1em 1.3em}
.cta-light{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:26px 28px;margin:40px 0 10px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-light p{color:var(--t2);max-width:60ch;margin:0}
.cta-light b{color:var(--ink)}
.cta-light a{display:inline-block;background:var(--accent);color:#fff;font-weight:700;font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;padding:.95em 1.6em;border-radius:6px;text-decoration:none;min-height:44px}
.cta-light a:hover{background:#1F9954}
@media(prefers-reduced-motion:reduce){.screen-head .live::before,.lamp.on.deep i{animation:none}}

/* Phones: fieldsets and grid columns default to min-content width, which held the
   form (and the page) wider than the screen. Keep only the trial link in the nav. */
fieldset{min-width:0}
.device-body>*{min-width:0}
@media(max-width:700px){.nav-in{gap:12px}.nav-links{gap:14px}.nav-links a:not(:last-child){display:none}}