/* ============================================================
   Estimotor — shared design system for every page of the portal
   Palette: engineering blue + drawing-office gold
   ============================================================ */
:root{
  --ink:#15263a; --ink-soft:#44566c; --ink-faint:#7b8a9c;
  --brand:#0b5aa5; --brand-deep:#083f74; --brand-pale:#e8f1fa;
  --accent:#c98a12; --accent-pale:#fdf4e3;
  --ok:#1e7f4f; --warn:#b54708; --line:#dfe6ee; --bg:#f5f8fb; --card:#ffffff;
  --radius:12px; --shadow:0 2px 10px rgba(21,38,58,.07);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",system-ui,-apple-system,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
section{padding:48px 0}
h2{font-size:1.6rem;color:var(--brand-deep);margin-bottom:6px}
h3{color:var(--brand-deep)}
.sub{color:var(--ink-faint);margin-bottom:26px;font-size:1.02rem}

/* ── top info bar ── */
.topbar{background:var(--brand-deep);color:#cfe0f2;font-size:.85rem;padding:6px 0}
.topbar .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.topbar a{color:#fff}

/* ── nav ── */
nav.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;box-shadow:var(--shadow)}
.navrow{display:flex;align-items:center;gap:18px;height:62px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.12rem;color:var(--brand-deep);white-space:nowrap}
.logo small{font-weight:400;color:var(--ink-faint);font-size:.8rem}
.navlinks{display:flex;gap:16px;flex-wrap:wrap;font-size:.92rem;margin-left:auto}
.navlinks a{color:var(--ink-soft);font-weight:500;padding:4px 2px}
.navlinks a:hover{color:var(--brand);text-decoration:none}
.navlinks a.on{color:var(--brand);border-bottom:2px solid var(--brand)}
/* Mobile-menu control. Off-screen rather than display:none so it keeps its place in
   the tab order; the burger label and the open state live in the ≤560px block below. */
.navtoggle{position:absolute;width:1px;height:1px;opacity:0;margin:0;pointer-events:none}
.navburger{display:none}

/* ── buttons ── */
.btn{display:inline-block;padding:10px 20px;border-radius:8px;font-weight:600;font-size:.95rem;border:1.5px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);text-decoration:none}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent}
.btn-ghost:hover{background:var(--brand-pale);text-decoration:none}
.btn-gold{background:var(--accent);color:#fff}
.btn-gold:hover{background:#a87109;text-decoration:none}

/* ── hero (homepage) ── */
.hero{background:linear-gradient(135deg,var(--brand-deep) 0%,var(--brand) 70%,#1373c9 100%);color:#fff;padding:60px 0 56px}
.hero h1{font-size:2.25rem;line-height:1.2;margin-bottom:14px}
.hero p{color:#d7e6f5;font-size:1.06rem;max-width:620px;margin-bottom:24px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}

/* ── inner-page banner ── */
.pagehead{background:linear-gradient(135deg,var(--brand-deep),var(--brand));color:#fff;padding:34px 0}
.pagehead h1{font-size:1.75rem;margin-bottom:6px}
.pagehead p{color:#d7e6f5;max-width:760px}
.crumbs{font-size:.85rem;color:#a9c6e2;margin-bottom:10px}
.crumbs a{color:#dcebf9}

/* ── cards & tiles ── */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tile{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px;transition:transform .15s,border-color .15s}
.tile:hover{transform:translateY(-3px);border-color:var(--brand)}
.tile .ic{width:44px;height:44px;border-radius:10px;background:var(--brand-pale);display:flex;align-items:center;justify-content:center;font-size:1.35rem}
.tile h3{font-size:1.02rem}
.tile p{font-size:.88rem;color:var(--ink-soft);flex:1}
.tile a.go{font-size:.88rem;font-weight:600}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}

/* ── stats ── */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;text-align:center}
.stat .num{font-size:1.8rem;font-weight:800;color:var(--brand)}
.stat .lbl{color:var(--ink-faint);font-size:.88rem}

/* ── chips / badges ── */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{background:var(--card);border:1px solid var(--line);padding:7px 15px;border-radius:20px;font-size:.87rem;color:var(--ink-soft)}
.badge{display:inline-block;background:var(--brand-deep);color:#fff;font-size:.72rem;font-weight:700;padding:2px 10px;border-radius:20px;letter-spacing:.5px}
.badge.gold{background:var(--accent)}
.badge.ok{background:var(--ok)}

/* ── tables ── */
.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:.92rem}
.tbl th{background:var(--brand-deep);color:#fff;text-align:left;padding:10px 14px;font-weight:600}
.tbl td{padding:9px 14px;border-top:1px solid var(--line)}
.tbl tr:nth-child(even) td{background:#f6f9fc}
.tbl .r{text-align:right}
.tbl-scroll{overflow-x:auto;border-radius:var(--radius)}

/* ── calculator components ── */
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.calc h3{margin-bottom:14px}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:16px}
.field label{display:block;font-size:.85rem;color:var(--ink-soft);font-weight:600;margin-bottom:5px}
.field input,.field select{width:100%;padding:9px 12px;border:1.5px solid var(--line);border-radius:8px;font-size:.95rem;font-family:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand)}
.result{background:var(--brand-pale);border:1px solid #bcd6ee;border-radius:10px;padding:16px 20px;margin-top:14px}
.result .big{font-size:1.35rem;font-weight:800;color:var(--brand-deep)}
.result table{width:100%;border-collapse:collapse;font-size:.92rem;margin-top:8px}
.result td{padding:5px 4px;border-bottom:1px dashed #bcd6ee}
.result td:last-child{text-align:right;font-weight:600}

/* ── notes & formulas ── */
.note{background:var(--accent-pale);border:1px solid #f0dfb8;border-left:4px solid var(--accent);border-radius:8px;padding:14px 18px;font-size:.9rem;margin:18px 0}
.note.blue{background:var(--brand-pale);border-color:#bcd6ee;border-left-color:var(--brand)}
.formula{background:#0d1c2e;color:#d7e6f5;border-radius:8px;padding:14px 18px;font-family:Consolas,monospace;font-size:.92rem;overflow-x:auto;margin:14px 0}

/* ── article typography ── */
.article{max-width:820px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 44px}
.article h2{margin:28px 0 10px;font-size:1.35rem}
.article h3{margin:20px 0 8px;font-size:1.08rem}
.article p{margin-bottom:14px;color:var(--ink-soft)}
.article ul,.article ol{margin:0 0 14px 24px;color:var(--ink-soft)}
.article li{margin-bottom:6px}
.article .meta{color:var(--ink-faint);font-size:.85rem;margin-bottom:18px}
.toc{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:16px 22px;margin:18px 0;font-size:.92rem}
.toc b{display:block;margin-bottom:6px;color:var(--brand-deep)}

/* ── updates strip (scrolling news ticker) ──
   A fixed label block, then the items flowing past it. The label is full-bleed (no radius,
   no vertical padding of its own) so it reads as part of the strip rather than a chip sitting
   on it — that solidity is what makes the moving half feel like a ticker and not a list. */
.updates{background:var(--accent-pale);border-block:1px solid #f0dfb8;overflow:hidden}
.updates .wrap{display:flex;gap:0;align-items:stretch;flex-wrap:nowrap;font-size:.9rem;padding:0 22px}
.updates .tag{background:var(--warn);color:#fff;font-weight:800;font-size:.78rem;letter-spacing:1px;
  display:flex;align-items:center;gap:8px;padding:12px 20px;flex:0 0 auto;align-self:stretch}
.updates .tag svg{flex:0 0 auto}
.ticker{overflow:hidden;flex:1 1 auto;min-width:0;display:flex;align-items:center;padding-left:24px;
  mask-image:linear-gradient(90deg,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,#000 92%,transparent)}
.ticker-track{display:inline-flex;white-space:nowrap;animation:ticker-scroll 40s linear infinite;will-change:transform}
.ticker:hover .ticker-track{animation-play-state:paused}
.ticker-items{display:inline-flex;align-items:center}
.ticker-items>span{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;color:var(--warn)}
.ticker-items>span a{color:inherit;text-decoration:underline;text-underline-offset:3px}
.ticker-items>span::after{content:"·";color:var(--accent);font-weight:700;margin:0 26px;opacity:.65}
@keyframes ticker-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
/* Reduced motion: no animation — show the first copy as a wrapping static list. */
@media (prefers-reduced-motion: reduce){
  .updates .wrap{flex-wrap:wrap;align-items:center}
  .ticker{mask-image:none;-webkit-mask-image:none;padding:10px 0 10px 24px}
  .ticker-track{animation:none;white-space:normal}
  .ticker-items{flex-wrap:wrap;gap:8px 0}
  .ticker-items[aria-hidden="true"]{display:none}
}
@media(max-width:560px){
  .updates .tag{padding:10px 14px;font-size:.72rem}
  .ticker{padding-left:14px}
}

/* ── footer ── */
footer.site{background:#0d1c2e;color:#9fb2c6;padding:36px 0 26px;font-size:.88rem;margin-top:54px}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:26px;margin-bottom:26px}
footer.site h4{color:#fff;font-size:.95rem;margin-bottom:10px}
footer.site a{color:#9fb2c6}
footer.site a:hover{color:#fff}
footer.site ul{list-style:none}
footer.site li{padding:3px 0}
.fineprint{border-top:1px solid #22384f;padding-top:16px;font-size:.8rem;color:#6d8199}
/* brand line inside the dark footer — echoes the E·S·T·I·M·O·T·O·R backronym + tagline */
.footbrand{border-top:1px solid #22384f;padding-top:18px;margin-bottom:20px;text-align:center}
.footbrand .fb-words{font-size:.86rem;color:#b9c8d8;line-height:1.7}
.footbrand .fb-words b{color:#fff;font-weight:700}
.footbrand .fb-tag{margin-top:7px;color:var(--accent);font-weight:700;font-style:italic;font-size:.93rem}

/* ── brand-meaning band (what "Estimotor" stands for — the name spells E·S·T·I·M·O·T·O·R) ── */
.brandband{background:var(--brand-pale);border-top:1px solid #d3e3f2;border-bottom:1px solid #d3e3f2;padding:24px 0}
.brandband .wrap{text-align:center}
.bb-kicker{font-size:.74rem;font-weight:800;letter-spacing:1.5px;text-transform:uppercase;color:var(--brand);margin:0 0 14px}
.bb-letters{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px 14px}
.bb-item{display:inline-flex;align-items:center;gap:8px;font-size:.98rem;color:var(--ink);font-weight:600}
.bb-item b{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;padding:0 7px;box-sizing:border-box;border-radius:8px;background:var(--brand-deep);color:#fff;font-size:1rem;font-weight:800;flex:none}
.bb-item.bb-theme b{background:var(--accent)}
.bb-dot{color:var(--ink-faint);font-weight:800;font-size:1.25rem;line-height:1}
.bb-tagline{margin:16px 0 0;font-size:1.04rem;color:var(--brand-deep);font-weight:700;font-style:italic}
@media(max-width:640px){.bb-item{font-size:.9rem;gap:6px}.bb-item b{width:26px;height:26px;font-size:.9rem}.bb-tagline{font-size:.95rem}}

/* ── print (proformas & references) ── */
@media print{
  .topbar,nav.site,footer.site,.no-print,.pagehead .crumbs{display:none!important}
  body{background:#fff}
  .card,.tbl,.article{box-shadow:none;border-color:#999}
  section{padding:10px 0}
}

/* ── responsive ── */
@media(max-width:900px){
  .grid-3,.grid-4,.stats{grid-template-columns:repeat(2,1fr)}
  .grid-2{grid-template-columns:1fr}
  footer.site .cols{grid-template-columns:1fr 1fr}
  .navlinks{gap:10px;font-size:.85rem}
  .hero h1{font-size:1.7rem}
  .article{padding:26px 22px}
}
@media(max-width:560px){
  .grid-2,.grid-3,.grid-4,.stats{grid-template-columns:1fr}

  /* ── mobile menu ──────────────────────────────────────────────────────────
     Pure CSS: a visually-hidden checkbox before .navlinks, flipped by the
     burger <label>, reveals the links as a stacked list. No script, because
     these pages are also opened straight from disk (file://) where a build
     step or framework would not run. The checkbox keeps its place in the tab
     order, so the menu opens from the keyboard with Space. */
  .navrow{flex-wrap:wrap;height:auto;padding:9px 0;gap:12px}
  .navburger{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;
    width:40px;height:34px;margin-left:auto;padding:8px;background:#fff;cursor:pointer;
    border:1px solid var(--line);border-radius:8px}
  .navburger span{display:block;height:2px;background:var(--brand-deep);border-radius:2px}
  .navtoggle:focus-visible+.navburger{outline:2px solid var(--brand);outline-offset:2px}

  .navlinks{display:none}                       /* collapsed by default … */
  .navtoggle:checked~.navlinks{                 /* … and opened by the burger */
    display:flex;flex-direction:column;gap:0;width:100%;order:9;
    margin:2px 0 0;padding-top:4px;border-top:1px solid var(--line)}
  .navtoggle:checked~.navlinks a{padding:11px 2px;border-bottom:1px solid var(--line);font-size:.95rem}
  .navtoggle:checked~.navlinks a:last-child{border-bottom:none}
  .navtoggle:checked~.navlinks a.on{border-bottom-color:var(--brand)}
}