/* ===================================================================
   Gadgetora — stylesheet
   Design concept: technical "spec sheet" editorial. Hairline rules,
   restrained radius, tabular numerals in data, one warm accent used
   sparingly for action + emphasis, a cooler accent for structure.
   Type: IBM Plex Serif (headlines) / IBM Plex Sans (everything else).
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Serif:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');

:root{
  /* -- color: light -- */
  --ink:#14171c;
  --paper:#f6f7f5;
  --surface:#ffffff;
  --line:#dde1e2;
  --line-strong:#c3c9cb;
  --muted:#5b6470;
  --accent:#2451ff;      /* action / links */
  --accent-ink:#ffffff;
  --accent-soft:#e8edff;
  --highlight:#c96a1f;   /* warm — used sparingly for emphasis marks */
  --highlight-soft:#fbe9dc;
  --danger:#b3261e;

  --radius-s:3px;
  --radius-m:6px;
  --shadow-1:0 1px 0 rgba(20,23,28,.04);

  --font-head:'IBM Plex Serif', Georgia, serif;
  --font-body:'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container:1180px;
  color-scheme: light;
}

:root[data-theme="dark"]{
  --ink:#e9ebee;
  --paper:#0e1116;
  --surface:#171b21;
  --line:#262b33;
  --line-strong:#333a44;
  --muted:#98a2ad;
  --accent:#6f92ff;
  --accent-ink:#0e1116;
  --accent-soft:#1b2440;
  --highlight:#e0975a;
  --highlight-soft:#2c2013;
  --danger:#ff6b62;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]):not([data-theme="dark"]){
    --ink:#e9ebee; --paper:#0e1116; --surface:#171b21; --line:#262b33;
    --line-strong:#333a44; --muted:#98a2ad; --accent:#6f92ff; --accent-ink:#0e1116;
    --accent-soft:#1b2440; --highlight:#e0975a; --highlight-soft:#2c2013; --danger:#ff6b62;
    color-scheme: dark;
  }
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--paper);
  color:var(--ink);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"tnum" 1,"lnum" 1;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3{font-family:var(--font-head);font-weight:600;line-height:1.15;margin:0 0 .5em}
h1{font-size:clamp(2rem,4vw,3rem)}
h2{font-size:clamp(1.35rem,2.6vw,1.9rem)}
h3{font-size:1.08rem;margin-bottom:.35em}
p{margin:0 0 1em}
ul{margin:0 0 1em;padding-left:1.2em}
.muted{color:var(--muted)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* -- topbar -- */
.topbar{background:var(--ink);color:var(--paper);font-size:13px}
.topbar .container{display:flex;justify-content:space-between;padding-top:7px;padding-bottom:7px}
.topbar span:last-child{color:var(--muted)}

/* -- header -- */
.header{position:sticky;top:0;z-index:40;background:var(--surface);border-bottom:1px solid var(--line)}
.header .nav{display:flex;align-items:center;gap:28px;padding:14px 24px;height:64px}
.logo{display:flex;align-items:center;gap:9px;font-family:var(--font-head);font-weight:600;font-size:1.15rem;white-space:nowrap}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--accent);color:var(--accent-ink);border-radius:var(--radius-s);font-size:.95rem}
.navlinks{display:flex;align-items:center;gap:22px;flex:1;font-size:.94rem}
.navlinks a{color:var(--muted);padding:6px 0;border-bottom:2px solid transparent;white-space:nowrap}
.navlinks a:hover{color:var(--ink)}
.navlinks a.active{color:var(--ink);border-bottom-color:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:8px}
.iconbtn,.menu-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-s);font-size:1rem;cursor:pointer}
.iconbtn:hover,.menu-btn:hover{border-color:var(--line-strong)}
.menu-btn{display:none}

/* -- buttons / forms -- */
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:var(--accent-ink);padding:9px 16px;border-radius:var(--radius-s);font-weight:500;font-size:.92rem;border:1px solid var(--accent)}
.btn:hover{filter:brightness(1.06)}
.search{display:flex;gap:0;border:1px solid var(--line-strong);border-radius:var(--radius-s);overflow:hidden;background:var(--surface)}
.search input{flex:1;border:0;background:transparent;padding:13px 14px;font:inherit;color:var(--ink);min-width:0}
.search input:focus{outline:0}
.search button{border:0;background:var(--ink);color:var(--paper);padding:0 20px;font-weight:500;cursor:pointer}
:root[data-theme="dark"] .search button{background:var(--accent);color:var(--accent-ink)}

/* -- hero -- */
.hero{padding:56px 0 48px;border-bottom:1px solid var(--line)}
.hero-box{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;color:var(--accent);font-weight:500;font-size:.85rem;margin-bottom:14px}
.hero h1{margin-bottom:.4em}
.hero-copy>p{max-width:46ch;color:var(--muted);font-size:1.05rem}
.hero .search{max-width:480px;margin:22px 0 10px}
.hero-art{display:flex;justify-content:center}
.device{
  position:relative;width:100%;max-width:280px;aspect-ratio:3/4;
  background:linear-gradient(160deg,var(--surface),var(--paper));
  border:1px solid var(--line-strong);border-radius:14px;
  box-shadow:var(--shadow-1);overflow:hidden;
}
.device::before{
  content:"";position:absolute;inset:14px;border:1px solid var(--line);border-radius:8px;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:20px 20px;opacity:.5;
}
.device::after{
  content:"";position:absolute;left:14px;right:14px;top:14px;height:36%;
  background:var(--accent-soft);border-bottom:1px solid var(--line);
  animation:sweep 3.2s ease-in-out infinite alternate;
}
@keyframes sweep{from{height:30%}to{height:62%}}
@media (prefers-reduced-motion:reduce){.device::after{animation:none}}

/* -- sections / grids -- */
.section{padding:44px 0}
.section-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:20px;gap:16px}
.section-head a{color:var(--accent);font-size:.92rem;white-space:nowrap}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* -- cards -- */
.card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-m);
  transition:border-color .15s ease, transform .15s ease;
}
.card:hover{border-color:var(--accent)}
.card.category{padding:22px 18px;text-align:left}
.category-icon{font-size:1.6rem;margin-bottom:10px}
.card.category b{display:block;font-size:1rem;margin-bottom:2px}
.card.category span{color:var(--muted);font-size:.88rem}
.article-img{
  height:120px;display:flex;align-items:center;justify-content:center;font-size:2.1rem;
  background:var(--accent-soft);border-bottom:1px solid var(--line);border-radius:var(--radius-m) var(--radius-m) 0 0;
}
.card-pad{padding:16px 18px 18px}
.tag{
  display:inline-block;background:var(--accent-soft);color:var(--accent);
  font-size:.72rem;font-weight:600;padding:3px 8px;border-radius:var(--radius-s);
  margin-bottom:8px;text-transform:none;
}
.card.product{display:flex;gap:14px;align-items:center;padding:16px 18px}
.product-art{
  width:52px;height:52px;flex:none;display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;background:var(--accent-soft);border-radius:var(--radius-s);
}
.card.product h3{margin-bottom:2px}

/* -- chips -- */
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  border:1px solid var(--line-strong);border-radius:999px;padding:7px 14px;font-size:.86rem;color:var(--muted);
  background:var(--surface);
}
.chip:hover{color:var(--ink);border-color:var(--ink)}
.chip.active{background:var(--ink);border-color:var(--ink);color:var(--paper)}
button.chip{cursor:pointer}

/* -- newsletter -- */
.newsletter{
  background:var(--ink);color:var(--paper);border-radius:var(--radius-m);
  padding:34px 32px;display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap;
}
.newsletter h2{color:var(--paper)}
.newsletter p{color:#aab0b8;margin:0}
.newsletter form{min-width:300px;flex:1;max-width:380px}
.newsletter .search{border-color:#333a44;background:#1a1e24}
.newsletter .search input{color:var(--paper)}
.newsletter .search input::placeholder{color:#7d8590}

/* -- page hero (inner pages) -- */
.page-hero{padding:34px 0 26px;border-bottom:1px solid var(--line)}
.breadcrumbs{color:var(--muted);font-size:.86rem;margin-bottom:12px}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--accent)}
.page-hero h1{margin-bottom:.3em}
.page-hero p{color:var(--muted);max-width:60ch}

/* -- article / sidebar layout -- */
.layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}
.side{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px}
.ad{
  border:1px dashed var(--line-strong);border-radius:var(--radius-s);color:var(--muted);
  font-size:.75rem;letter-spacing:.04em;text-align:center;padding:38px 10px;background:var(--surface);
}
.ad.ad-live{
  border-style:solid;padding:12px;display:flex;align-items:center;justify-content:center;min-height:0;overflow:hidden;
}
.banner-ad{background:var(--surface);border-bottom:1px solid var(--line);padding:8px 0}
.banner-ad .container{display:flex;flex-direction:column;align-items:center;gap:4px}
.banner-ad-label{font-size:.68rem;letter-spacing:.03em;color:var(--muted)}
.article{max-width:70ch}
.article h2{margin-top:1.3em}
.article ul li{margin-bottom:.4em}
.callout{
  border-left:3px solid var(--accent);background:var(--accent-soft);padding:14px 16px;border-radius:0 var(--radius-s) var(--radius-s) 0;
  margin:20px 0;
}
.notice{
  border-left:3px solid var(--highlight);background:var(--highlight-soft);padding:14px 16px;border-radius:0 var(--radius-s) var(--radius-s) 0;
  font-size:.92rem;margin:22px 0;
}

/* -- comparison table -- */
.compare{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-m)}
.compare table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:520px}
.compare th,.compare td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.compare thead th{background:var(--surface);font-family:var(--font-head);font-weight:600;color:var(--muted);border-bottom:1px solid var(--line-strong)}
.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr:hover{background:var(--accent-soft)}
.compare td:first-child{color:var(--muted)}

/* -- search page -- */
.search-results{display:flex;flex-direction:column;gap:2px}
.result-item{
  display:flex;gap:16px;align-items:flex-start;padding:16px 4px;border-bottom:1px solid var(--line);
}
.result-icon{font-size:1.4rem;width:36px;text-align:center;flex:none}
.result-item h3{margin-bottom:2px}
.result-item .result-meta{font-size:.78rem;color:var(--accent);font-weight:600;margin-bottom:3px;display:block}
.result-item mark{background:var(--highlight-soft);color:var(--ink);border-radius:2px;padding:0 2px}
.empty-state{padding:30px 4px;color:var(--muted)}
.empty-state a{color:var(--accent)}

/* -- footer -- */
.footer{background:var(--ink);color:#aab0b8;margin-top:40px;padding-top:44px}
.footer a{color:#aab0b8;display:block;padding:5px 0;font-size:.92rem}
.footer a:hover{color:var(--paper)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:26px;padding-bottom:30px}
.footer h4{color:var(--paper);font-size:.85rem;margin:0 0 10px;font-weight:600}
.footer .logo{color:var(--paper)}
.copyright{display:flex;justify-content:space-between;border-top:1px solid #262b33;padding:16px 24px;font-size:.8rem;flex-wrap:wrap;gap:6px}

/* ===================== responsive ===================== */
@media (max-width:960px){
  .hero-box{grid-template-columns:1fr;gap:28px}
  .hero-art{order:-1;max-width:220px;margin:0 auto}
  .layout{grid-template-columns:1fr}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side .card{flex:1;min-width:220px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr 1fr}
}
@media (max-width:880px){
  .navlinks{
    position:absolute;top:64px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:flex-start;gap:0;padding:6px 24px 14px;
    display:none;
  }
  .header.nav-open .navlinks{display:flex}
  .navlinks a{width:100%;padding:10px 0;border-bottom:1px solid var(--line)!important}
  .navlinks a.active{border-bottom-color:var(--line)!important;color:var(--accent)}
  .menu-btn{display:inline-flex}
}
@media (max-width:640px){
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}
  .topbar .container{font-size:11px}
  .topbar span:last-child{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .newsletter{flex-direction:column;align-items:flex-start}
  .newsletter form{max-width:none;width:100%}
  .side{flex-direction:column}
  .compare th,.compare td{padding:10px 12px}
}