/* ===========================================================
   skinclub.mobi — Mobile-first CS2 case opening guide
   Palette: dark base, cyan + electric blue accents
   Fonts: Sora (headings), DM Sans (body)
   No JS required. CSS-only menu + :target popup.
   =========================================================== */

:root{
  --bg:#070b16;
  --bg-2:#0c1326;
  --card:#101a31;
  --card-2:#13213d;
  --line:#1d2c4d;
  --ink:#eaf2ff;
  --muted:#9fb2d6;
  --cyan:#28e0d8;
  --blue:#3a86ff;
  --blue-2:#5b9bff;
  --glow:rgba(40,224,216,.35);
  --radius:18px;
  --radius-lg:26px;
  --maxw:1120px;
  --shadow:0 14px 40px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"DM Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%,rgba(58,134,255,.18),transparent 60%),
    radial-gradient(900px 500px at -10% 10%,rgba(40,224,216,.12),transparent 55%),
    var(--bg);
  color:var(--ink);
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  padding-bottom:64px; /* bottom nav clearance on mobile */
}
img{max-width:100%;display:block;height:auto}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}

h1,h2,h3,h4{font-family:"Sora",sans-serif;line-height:1.18;margin:0 0 .5em;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,6vw,3.1rem)}
h2{font-size:clamp(1.4rem,4.4vw,2.05rem);margin-top:1.1em}
h3{font-size:clamp(1.1rem,3.2vw,1.35rem)}
p{margin:0 0 1em}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.section{padding:38px 0}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(7,11,22,.86);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:14px;padding:10px 18px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:9px;font-family:"Sora";font-weight:700;font-size:1.12rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand img{width:32px;height:32px}
.brand b{color:var(--cyan)}

/* CSS-only menu toggle */
.menu-toggle{display:none}
.menu-btn{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  cursor:pointer;border:1px solid var(--line);background:var(--card);
  color:var(--ink);padding:9px 13px;border-radius:12px;font-weight:600;font-size:.92rem;
}
.menu-btn:hover{border-color:var(--cyan)}
.nav-links{
  display:none;flex-direction:column;gap:2px;
  position:absolute;top:58px;right:14px;left:14px;
  background:var(--card-2);border:1px solid var(--line);border-radius:16px;
  padding:10px;box-shadow:var(--shadow);
}
.nav-links a{
  color:var(--ink);padding:11px 13px;border-radius:11px;font-weight:600;font-size:.96rem;
}
.nav-links a:hover{background:rgba(58,134,255,.16);text-decoration:none;color:var(--cyan)}
.menu-toggle:checked ~ .nav-links{display:flex}

@media(min-width:900px){
  .menu-btn{display:none}
  .nav-links{
    display:flex;flex-direction:row;position:static;background:none;border:none;
    box-shadow:none;padding:0;margin-left:auto;flex-wrap:wrap;justify-content:flex-end;
  }
  .nav-links a{padding:7px 10px;font-size:.9rem}
}

/* ---------- Buttons / CTA ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:"Sora";font-weight:600;font-size:1rem;
  padding:14px 22px;border-radius:14px;border:1px solid transparent;cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease;text-align:center;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(120deg,var(--cyan),var(--blue));
  color:#05101f;box-shadow:0 10px 26px var(--glow);
}
.btn-secondary{
  background:var(--card-2);color:var(--ink);border-color:var(--line);
}
.btn-ghost{background:transparent;border-color:var(--cyan);color:var(--cyan)}
.btn-block{display:flex;width:100%}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}

.cta-band{
  background:linear-gradient(120deg,rgba(40,224,216,.14),rgba(58,134,255,.16));
  border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 22px;text-align:center;margin:30px 0;
}
.cta-band h2{margin-top:0}

/* ---------- Hero ---------- */
.hero{padding:30px 0 18px}
.hero-grid{display:grid;gap:24px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.8rem;
  text-transform:uppercase;letter-spacing:.12em;color:var(--cyan);
  background:rgba(40,224,216,.1);border:1px solid var(--line);
  padding:6px 12px;border-radius:999px;margin-bottom:14px;
}
.hero p.lead{font-size:1.08rem;color:var(--muted);max-width:60ch}
.hero-art{position:relative}
.hero-art img{width:100%;border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow)}
.stat-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.stat{
  flex:1 1 130px;background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:12px 14px;
}
.stat b{display:block;font-family:"Sora";font-size:1.3rem;color:var(--cyan)}
.stat span{font-size:.82rem;color:var(--muted)}

@media(min-width:900px){
  .hero-grid{grid-template-columns:1.15fr .85fr}
}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
.grid-4{grid-template-columns:1fr 1fr}
@media(min-width:680px){
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:1fr 1fr}
}
@media(min-width:960px){
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
}

.card{
  background:linear-gradient(180deg,var(--card),var(--card-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;position:relative;overflow:hidden;
  transition:border-color .2s ease,transform .2s ease;
}
.card:hover{border-color:var(--cyan);transform:translateY(-3px)}
.card h3{margin-bottom:.35em}
.card p{font-size:.95rem;color:var(--muted);margin-bottom:.7em}
.card .thumb{
  border-radius:13px;border:1px solid var(--line);margin-bottom:13px;width:100%;
  background:var(--bg-2);
}
.tag{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.05em;
  text-transform:uppercase;color:var(--cyan);
  background:rgba(40,224,216,.1);border:1px solid var(--line);
  padding:4px 9px;border-radius:8px;margin-bottom:9px;
}
.price{font-family:"Sora";font-weight:700;color:var(--ink)}
.card .small-cta{font-weight:600;font-size:.9rem}

/* category chips */
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{
  display:flex;align-items:center;gap:9px;
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:11px 14px;font-weight:600;color:var(--ink);font-size:.92rem;
}
.chip:hover{border-color:var(--cyan);text-decoration:none;color:var(--cyan)}
.chip img{width:26px;height:26px}

/* feature list */
.feat{display:flex;gap:13px;align-items:flex-start;margin-bottom:14px}
.feat .ic{
  flex:0 0 42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(58,134,255,.14);border:1px solid var(--line);
  font-size:1.2rem;color:var(--cyan);
}
.feat h3{margin:.1em 0 .25em;font-size:1.08rem}
.feat p{margin:0;color:var(--muted);font-size:.94rem}

/* phone mockup steps */
.steps{counter-reset:step;display:grid;gap:14px}
.step{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:16px;padding:16px 16px 16px 60px;
}
.step:before{
  counter-increment:step;content:counter(step);
  position:absolute;left:16px;top:16px;width:30px;height:30px;border-radius:9px;
  display:grid;place-items:center;font-family:"Sora";font-weight:700;
  background:linear-gradient(120deg,var(--cyan),var(--blue));color:#05101f;
}
.step h3{font-size:1.05rem;margin-bottom:.2em}
.step p{margin:0;color:var(--muted);font-size:.93rem}

/* ---------- SEO long block ---------- */
.prose{max-width:78ch}
.prose h2{margin-top:1.4em}
.prose ul{padding-left:1.2em}
.prose li{margin-bottom:.5em}

/* breadcrumbs */
.crumbs{font-size:.85rem;color:var(--muted);padding:14px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs span{color:var(--ink)}

/* ---------- FAQ (CSS details) ---------- */
.faq{display:grid;gap:10px;max-width:78ch}
.faq details{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:4px 16px;
}
.faq details[open]{border-color:var(--cyan)}
.faq summary{
  cursor:pointer;font-family:"Sora";font-weight:600;font-size:1.02rem;
  padding:13px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";color:var(--cyan);font-size:1.4rem;line-height:1}
.faq details[open] summary:after{content:"–"}
.faq p{color:var(--muted);margin:0 0 14px}

/* related links */
.related{display:grid;gap:10px;grid-template-columns:1fr}
@media(min-width:680px){.related{grid-template-columns:1fr 1fr}}
.related a{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:13px;padding:13px 15px;color:var(--ink);font-weight:600;
}
.related a:hover{border-color:var(--cyan);text-decoration:none;color:var(--cyan)}
.related a span{display:block;font-size:.82rem;color:var(--muted);font-weight:400;margin-top:2px}

/* responsible gaming note */
.note{
  background:rgba(58,134,255,.08);border:1px solid var(--line);
  border-left:4px solid var(--cyan);border-radius:12px;padding:16px 18px;margin:18px 0;
}
.note strong{color:var(--ink)}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--bg-2);border-top:1px solid var(--line);
  padding:40px 0 30px;margin-top:30px;
}
.foot-grid{display:grid;gap:26px;grid-template-columns:1fr}
@media(min-width:760px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr}}
.foot-grid h4{color:var(--ink);font-size:1rem;margin-bottom:.7em}
.foot-links{display:grid;gap:7px}
.foot-links a{color:var(--muted);font-size:.92rem}
.foot-links a:hover{color:var(--cyan)}
.foot-about p{color:var(--muted);font-size:.9rem}
.badge18{
  display:inline-grid;place-items:center;width:42px;height:42px;border-radius:50%;
  border:2px solid var(--cyan);color:var(--cyan);font-family:"Sora";font-weight:700;
  margin-bottom:10px;font-size:.85rem;
}
.foot-bottom{
  border-top:1px solid var(--line);margin-top:26px;padding-top:18px;
  font-size:.82rem;color:var(--muted);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
}
.disclaimer{font-size:.8rem;color:var(--muted);margin-top:14px;max-width:75ch}

/* ---------- Bottom app-style nav (mobile) ---------- */
.bottom-nav{
  position:fixed;left:0;right:0;bottom:0;z-index:40;
  display:flex;justify-content:space-around;
  background:rgba(12,19,38,.95);backdrop-filter:blur(10px);
  border-top:1px solid var(--line);padding:7px 6px;
}
.bottom-nav a{
  display:flex;flex-direction:column;align-items:center;gap:2px;
  color:var(--muted);font-size:.66rem;font-weight:600;padding:4px 8px;border-radius:10px;
}
.bottom-nav a:hover,.bottom-nav a.active{color:var(--cyan);text-decoration:none}
.bottom-nav .bi{font-size:1.15rem;line-height:1}
@media(min-width:900px){
  .bottom-nav{display:none}
  body{padding-bottom:0}
}

/* ---------- CTA Popup (CSS :target) ---------- */
.modal{
  display:none;position:fixed;inset:0;z-index:100;
  background:rgba(4,8,18,.78);backdrop-filter:blur(6px);
  align-items:center;justify-content:center;padding:18px;
}
.modal:target{display:flex}
.modal__box{
  position:relative;width:100%;max-width:430px;
  background:linear-gradient(180deg,var(--card-2),var(--card));
  border:1px solid var(--cyan);border-radius:22px;
  padding:30px 26px 26px;box-shadow:0 24px 70px rgba(0,0,0,.6),0 0 0 1px rgba(40,224,216,.15);
  text-align:center;
}
.modal__close{
  position:absolute;top:12px;right:14px;width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;color:var(--muted);font-size:1.5rem;
  border:1px solid var(--line);background:var(--card);
}
.modal__close:hover{color:var(--ink);text-decoration:none;border-color:var(--cyan)}
.modal__icon{
  width:58px;height:58px;border-radius:50%;margin:0 auto 14px;
  display:grid;place-items:center;font-size:1.7rem;color:#05101f;
  background:linear-gradient(120deg,var(--cyan),var(--blue));box-shadow:0 8px 22px var(--glow);
}
.modal__box h2{margin:0 0 .4em;font-size:1.5rem}
.modal__box p{color:var(--muted);font-size:.95rem}
.checkline{
  display:flex;align-items:center;gap:10px;text-align:left;
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:11px 13px;margin:9px 0;font-size:.9rem;color:var(--ink);
}
.checkline input{width:18px;height:18px;accent-color:var(--cyan)}
.modal__actions{display:flex;gap:12px;margin-top:18px}
.modal__actions .btn{flex:1}

/* utility */
.lead-big{font-size:1.15rem;color:var(--muted)}
.divider{height:1px;background:var(--line);border:0;margin:30px 0}
.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.pill{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:.82rem;color:var(--muted)}