/* HDfury Integral 2 - site.css
   Brand colours sourced from official product photography:
   near-black enclosure + neon green unit logo, purple->orange gradient on packaging. */

:root{
  --bg:#ffffff;
  --bg-alt:#f4f6f5;
  --ink:#12140f;
  --ink-soft:#3a3f38;
  --line:#dfe3e0;
  --dark:#0a0c0b;
  --dark-2:#151815;
  --green:#22c55e;
  --green-bright:#39ff6a;
  --grad-a:#8a4fff;
  --grad-b:#ff7a3d;
  --focus:#1d7fff;
  --radius:10px;
  --maxw:1180px;
  /* the green->cyan glow the "Integral" wordmark uses on the physical unit itself */
  --unit-gradient: linear-gradient(90deg,#22ff88 0%,#2eeec2 50%,#29c6ff 100%);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}
::selection{background:rgba(46,238,194,.35)}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  overflow-wrap:break-word;
}
img{max-width:100%;height:auto;display:block}
a{color:#0f7a3d}
a:hover{color:var(--green)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:3px solid var(--focus);outline-offset:2px;
}

.skip-link{
  position:absolute;left:-999px;top:0;background:var(--dark);color:#fff;padding:.75em 1em;z-index:1000;
}
.skip-link:focus{left:0}

/* ---------- header ---------- */
.site-header{background:var(--dark);color:#fff;position:sticky;top:0;z-index:50}
.header-inner{
  max-width:var(--maxw);margin:0 auto;padding:.75rem 1rem;
  display:flex;align-items:center;gap:1rem;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:.65rem;color:#fff;text-decoration:none;font-weight:700;font-size:1.05rem}
.brand-logo{width:auto;height:1.35rem;flex-shrink:0}
.brand-name{font-weight:800;letter-spacing:.01em;white-space:nowrap}

/* gradient text: matches the green->cyan glow the "Integral" wordmark uses on the unit itself */
.grad-text{
  background-image:var(--unit-gradient);
  background-clip:text;
  -webkit-background-clip:text;
  color:var(--green-bright); /* fallback if background-clip:text is unsupported */
  -webkit-text-fill-color:transparent;
}
@supports not (background-clip:text){
  .grad-text{-webkit-text-fill-color:unset;color:var(--green-bright)}
}
.primary-nav-desktop{display:none}
.primary-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.25rem}
.primary-nav-desktop ul{flex-direction:row;gap:1.1rem;flex-wrap:wrap}
.primary-nav a{color:#e7e9e6;text-decoration:none;font-size:.95rem;display:block;padding:.4rem 0}
.primary-nav a:hover,.primary-nav a[aria-current="page"]{color:var(--green-bright)}

.buy-btn{
  background-image:var(--unit-gradient);
  background-color:var(--green); /* fallback */
  color:#04140d;font-weight:800;text-decoration:none;
  padding:.65rem 1.1rem;border-radius:999px;white-space:nowrap;font-size:.9rem;
  display:inline-block;border:0;box-shadow:0 4px 18px -6px rgba(41,198,255,.55);
  transition:transform .15s ease,box-shadow .15s ease;
}
.buy-btn:hover{
  color:#04140d;transform:translateY(-1px);
  box-shadow:0 6px 22px -6px rgba(41,198,255,.75);
}
.buy-btn-mobile{display:inline-block;margin-top:.75rem}
.buy-btn-desktop{display:none}

/* mobile menu: native details/summary, CSP-safe, no JS required */
.mobile-menu{position:relative}
.menu-toggle{
  list-style:none;cursor:pointer;user-select:none;
  display:list-item;
  background:var(--dark-2);color:#fff;border-radius:6px;padding:.5rem .9rem;font-weight:600;font-size:.95rem;
}
.menu-toggle::-webkit-details-marker{display:none}
.mobile-menu[open] .menu-toggle{background:var(--green);color:#08120c}
.mobile-menu .primary-nav{
  margin-top:.5rem;background:var(--dark-2);border-radius:8px;padding:.75rem 1rem;
  max-height:calc(100vh - 8rem);
  max-height:calc(100dvh - 8rem);
  overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;
}

/* body scroll-lock while the mobile menu is open: overflow ONLY, never a height */
body.menu-open{overflow:hidden}

/* header actions: language switcher + buy button, right-aligned */
.header-actions{display:none;align-items:center;gap:.6rem;margin-left:auto}

/* language switcher: native details/summary, CSP-safe, no JS required.
   summary stays display:list-item (WebKit/iOS); flex lives one level lower. */
.lang-menu{position:relative}
.lang-menu summary{list-style:none;cursor:pointer;user-select:none;display:list-item}
.lang-menu summary::-webkit-details-marker{display:none}
.lang-toggle{display:flex;align-items:center;border:1px solid #4a504a;border-radius:6px;color:#e7e9e6;padding:.45rem .7rem;font-size:.85rem;font-weight:700;letter-spacing:.04em}
.lang-menu[open] .lang-toggle{border-color:var(--green-bright);color:var(--green-bright)}
.lang-list{position:absolute;right:0;top:calc(100% + .4rem);margin:0;padding:.4rem;list-style:none;background:var(--dark-2);border:1px solid #2a2e2a;border-radius:8px;z-index:60;box-shadow:0 10px 30px -10px rgba(0,0,0,.6);display:grid;grid-template-columns:repeat(2,minmax(8.5rem,1fr));gap:0 .35rem;max-height:min(80vh,30rem);overflow-y:auto;overscroll-behavior:contain}
.lang-list li a{display:block;padding:.5rem .7rem;color:#e7e9e6;text-decoration:none;border-radius:6px;font-size:.9rem}
.lang-list li a:hover{background:var(--dark);color:var(--green-bright)}
.lang-list li a[aria-current="page"]{color:var(--green-bright);font-weight:700}

/* mobile: language links inline in the open menu */
.lang-inline{list-style:none;margin:.9rem 0 0;padding:.75rem 0 0;border-top:1px solid #2a2e2a;display:flex;flex-wrap:wrap;gap:.35rem 1.25rem}
.lang-inline a{color:#e7e9e6;text-decoration:none;font-size:.95rem;padding:.3rem 0;display:block}
.lang-inline a[aria-current="page"]{color:var(--green-bright);font-weight:700}

@media (min-width:901px){
  .mobile-menu{display:none}
  .header-actions{display:flex}
  .buy-btn-desktop{display:inline-block}
  /* row 1: brand + language + buy button; row 2: the nav, full-width.
     This never wraps mid-list and never pushes the buy button out of view,
     in any language. */
  .header-inner{flex-wrap:wrap;row-gap:.15rem}
  .primary-nav-desktop{display:block;order:3;flex-basis:100%;margin-left:0}
  .primary-nav-desktop ul{gap:1.1rem}
}
@media (max-width:900px){
  .header-inner{justify-content:space-between}
}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{max-width:var(--maxw);margin:0 auto;padding:.75rem 1rem 0}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;margin:0;padding:0;font-size:.85rem;color:var(--ink-soft)}
.breadcrumbs li:not(:last-child)::after{content:"\203A";margin-left:.35rem;color:#b8c0ba}
.breadcrumbs a{color:var(--ink-soft);text-decoration:none}
.breadcrumbs a:hover{color:#0f7a3d}

/* ---------- layout ---------- */
main{display:block}
.section,.section-first{max-width:var(--maxw);margin:0 auto;padding:2rem 1rem}
.section-first{padding-top:2.5rem}
h1{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.2;margin:.2rem 0 .6rem}
h2{font-size:clamp(1.25rem,2.6vw,1.6rem);margin:0 0 .75rem;padding-top:.25rem}
[id]{scroll-margin-top:5rem}
/* two-row desktop sticky header is ~107px tall: keep anchor targets below it */
@media (min-width:901px){[id]{scroll-margin-top:7.75rem}}
.section h2::after,.section-first h2::after{
  content:"";display:block;width:2.6rem;height:3px;margin-top:.45rem;border-radius:2px;
  background-image:var(--unit-gradient);
}
h3{font-size:1.05rem;margin:0 0 .4rem}
.lead{font-size:1.1rem;color:var(--ink-soft);max-width:65ch}
p{max-width:75ch}
.source-note,.warn-note{font-size:.85rem;color:var(--ink-soft)}
.warn-note{border-left:3px solid var(--grad-b);padding-left:.75rem}
.notice-lang{
  max-width:var(--maxw);margin:1rem auto 0;padding:.6rem 1rem;font-size:.85rem;color:var(--ink-soft);
}
.notice-lang{border-left:3px solid var(--green);}

/* manual figures: screenshots/diagrams from the official PDF */
.manual-fig{margin:1.25rem 0;max-width:800px}
.manual-fig img{border:1px solid var(--line);border-radius:8px;background:#fff;padding:.4rem}
.manual-fig figcaption{font-size:.85rem;color:var(--ink-soft);margin-top:.45rem}
.manual-fig-narrow{max-width:420px}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(60% 90% at 82% 20%, rgba(41,198,255,.20) 0%, rgba(41,198,255,0) 60%),
    radial-gradient(55% 80% at 12% 85%, rgba(138,79,255,.22) 0%, rgba(138,79,255,0) 60%),
    radial-gradient(45% 65% at 90% 90%, rgba(255,122,61,.14) 0%, rgba(255,122,61,0) 65%),
    linear-gradient(135deg,var(--dark) 0%,var(--dark-2) 55%,#150f22 100%);
  color:#fff;
}
.hero{display:flex;flex-wrap:wrap;align-items:center;gap:2rem;margin:0;
  padding:2.5rem max(1rem, calc((100% - var(--maxw)) / 2))}
.hero-text{flex:1 1 360px}
.hero-text h1{margin-top:0}
.hero-lead{color:#cfd6cf;max-width:60ch}
.hero-ctas{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1.25rem}
.btn-secondary{
  color:#fff;text-decoration:none;border:1px solid #4a504a;border-radius:999px;padding:.6rem 1rem;font-size:.9rem;
}
.btn-secondary{transition:border-color .15s ease,color .15s ease}
.btn-secondary:hover{border-color:var(--green-bright);color:var(--green-bright)}
.hero-media{flex:1 1 280px;max-width:420px;margin:0 auto}

/* ---------- cards / facts ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem;margin-top:1rem}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;background:var(--bg-alt);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-3px);border-color:#8fd8b8;box-shadow:0 10px 28px -14px rgba(16,80,50,.35)}
@media (prefers-reduced-motion: reduce){
  .card{transition:none}
  .card:hover{transform:none}
}
.card h3{margin-top:0}
.card a{font-weight:600;text-decoration:none}

.facts-grid{list-style:none;margin:1rem 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:.9rem}
.facts-grid li{border:1px solid var(--line);border-radius:var(--radius);padding:.85rem 1rem;background:var(--bg-alt)}
.facts-grid strong{display:block;font-size:.85rem;text-transform:uppercase;letter-spacing:.03em;color:var(--ink-soft)}

/* ---------- tables ---------- */
.spec-table{width:100%;border-collapse:collapse;margin-top:.5rem;font-size:.95rem}
.spec-table th,.spec-table td{text-align:left;padding:.6rem .75rem;border-bottom:1px solid var(--line);vertical-align:top}
.spec-table th[scope="row"]{width:34%;color:var(--ink-soft);font-weight:600}
.spec-table thead th{background:var(--bg-alt)}
.spec-table tbody tr:nth-child(even){background:#fafbfa}
.spec-table tbody tr:hover{background:#f1f7f3}

/* ---------- lists / steps ---------- */
.steps{padding-left:1.3rem}
.steps li{margin-bottom:.6rem;max-width:70ch}
.mono-list{list-style:none;padding:0}
.mono-list li{padding:.35rem 0;border-bottom:1px dashed var(--line);font-size:.92rem}
.mono-list code{background:var(--bg-alt);padding:.1rem .35rem;border-radius:4px}
.code-block{background:var(--dark);color:#d8f5d8;padding:1rem;border-radius:var(--radius);overflow-x:auto;font-size:.85rem}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:.6rem}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);padding:.2rem 1rem;background:var(--bg-alt)}
.faq-item summary{cursor:pointer;font-weight:600;padding:.75rem 2rem .75rem 0;display:list-item;position:relative}
.faq-item summary::after{
  content:"+";position:absolute;right:.15rem;top:50%;transform:translateY(-50%);
  font-weight:800;font-size:1.15rem;color:#0f7a3d;
}
.faq-item[open] summary::after{content:"\2212"}
.faq-item[open] summary{color:#0f7a3d}
.faq-item p{padding-bottom:.9rem;margin:0}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#c9cec8;margin-top:3rem;position:relative}
.site-footer::before{content:"";display:block;height:3px;background-image:var(--unit-gradient)}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:2rem 1rem;font-size:.85rem;display:flex;flex-direction:column;gap:1.5rem}
.footer-nav a,.footer-legal a{color:#c9cec8;text-decoration:none}
.footer-nav a:hover,.footer-legal a:hover{color:var(--green-bright)}
.footer-disclaimer{max-width:80ch;color:#9aa19a}
.footer-company a{color:#9aa19a}

.footer-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.75rem;
}
.footer-col h2{
  font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:#8f958e;margin:0 0 .75rem;
}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}
.footer-col ul li a{color:#c9cec8;text-decoration:none;font-size:.9rem}
.footer-col ul li a:hover{color:var(--green-bright)}
.footer-col-company address{font-style:normal;line-height:1.7;font-size:.9rem;color:#c9cec8}
.footer-col-company address a{color:#c9cec8;text-decoration:none}
.footer-col-company address a:hover{color:var(--green-bright)}

address.contact-address{font-style:normal;line-height:1.8}

/* ---------- homepage: signature list ---------- */
.signature-list{list-style:none;margin:1.25rem 0 0;padding:0;display:flex;flex-direction:column;gap:1.1rem}
.signature-list li{display:flex;gap:1rem;align-items:flex-start}
.signature-num{
  flex:0 0 auto;width:2.1rem;height:2.1rem;border-radius:50%;
  background-image:var(--unit-gradient);
  color:#04140d;font-weight:800;font-size:1rem;
  display:flex;align-items:center;justify-content:center;
}
.signature-list h3{margin:0 0 .25rem}
.signature-list p{margin:0}

/* ---------- homepage: image/text split section ---------- */
.section-split{display:flex;flex-wrap:wrap;align-items:center;gap:2rem}
.section-split-media{flex:1 1 280px;max-width:420px;margin:0 auto}
.section-split-text{flex:1 1 340px}
.section-split-text h2{padding-top:0}
.section-split-text a{font-weight:600;text-decoration:none}

@media (max-width:400px){
  .hero-ctas{flex-direction:column;align-items:stretch}
  .hero-ctas a{text-align:center}
}