/* ========= OSMIUM — Dark Luxe Theme ========= */
:root{
  --bg-0:#0b0b12;          /* page background (very dark) */
  --bg-1:#141123;          /* panels / cards */
  --bg-2:#1a1726;          /* deeper card tone */
  --line:rgba(255,255,255,.08);
  --line2:rgba(255,255,255,.12);
  --text-1:#e9e7f6;        /* primary text */
  --text-2:#b9b6cc;        /* secondary text */
  --muted:#8f8aa7;
  --accent:#8b5cf6;        /* violet */
  --accent-2:#a78bfa;
  --good:#4ade80;          /* green */
  --bad:#f87171;           /* red */
  --shadow:0 8px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{height:100%}
html{scroll-behavior:smooth}

body{
  margin:0;
  color:var(--text-1);
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(138,92,246,.12), transparent 60%),
    radial-gradient(1000px 500px at -10% 0%, rgba(34,197,94,.10), transparent 55%),
    var(--bg-0);
  font:14px/1.55 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji";
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

a{color:var(--text-1); text-decoration:none}
a:hover{opacity:.9}

/* ====== header ====== */
.site-header{
  position:sticky; top:0; z-index:40;
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; padding:14px 22px;
  background:rgba(11,11,18,.55);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:700; letter-spacing:.4px;
}
.brand .logo{
  width:22px; height:22px; border-radius:6px;
  display:grid; place-items:center;
  background:linear-gradient(135deg, var(--accent), #6d28d9);
  box-shadow:0 0 0 1px rgba(255,255,255,.15) inset;
}
.site-header nav a{
  color:var(--text-2); margin-left:18px; font-weight:500;
}
.site-header nav a:hover{color:var(--text-1)}

/* ====== billboard / ticker ====== */
.ad-wrap{
  max-width:1100px; margin:16px auto 0;
  border:1px solid var(--line); border-radius:14px;
  background:rgba(255,255,255,.04);
  overflow:hidden; position:relative;
}
.ad-strip{
  display:flex; gap:22px; padding:10px 16px;
  animation:admarquee 26s linear infinite;
  will-change:transform;
}
.ad-wrap:hover .ad-strip{animation-play-state:paused}
@keyframes admarquee{ from{transform:translateX(0)} to{transform:translateX(-50%)} }
.ad-grad-l, .ad-grad-r{
  position:absolute; top:0; bottom:0; width:80px; pointer-events:none;
}
.ad-grad-l{left:0; background:linear-gradient(90deg, var(--bg-1), transparent)}
.ad-grad-r{right:0; background:linear-gradient(-90deg, var(--bg-1), transparent)}
.ad-item{
  display:flex; align-items:center; gap:10px; white-space:nowrap;
  padding:8px 12px; border-radius:12px;
  background:rgba(255,255,255,.05); border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.ad-item img{width:18px; height:18px; border-radius:4px}

/* ====== hero ====== */
.hero{max-width:1100px; margin:24px auto; padding:0 18px}
.hero-grid{display:grid; gap:26px}
@media(min-width:900px){
  .hero-grid{grid-template-columns:1.05fr .95fr; align-items:center}
}
.hero h1{
  margin:0; font-size:clamp(28px,3.5vw,42px);
  line-height:1.2; font-weight:700;
}
.hero p{color:var(--text-2); margin:12px 0 0}

.btn-row{display:flex; flex-wrap:wrap; gap:12px; margin-top:18px}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:10px 14px; border-radius:12px; font-weight:600; font-size:14px;
  border:1px solid transparent; cursor:pointer; transition:.18s ease;
}
.btn-primary{
  color:#fff; background:var(--accent);
  box-shadow:0 6px 20px rgba(139,92,246,.35);
}
.btn-primary:hover{background:var(--accent-2)}
.btn-secondary{
  color:var(--text-1); background:rgba(255,255,255,.08);
  border-color:var(--line2);
}
.btn-secondary:hover{background:rgba(255,255,255,.12)}
.btn-ghost{
  color:var(--text-2); background:transparent; border-color:var(--line);
}
.small-note{color:var(--muted); font-size:12px}

.pills{display:flex; gap:16px; margin-top:16px; color:var(--text-2)}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 10px; border-radius:999px;
  border:1px solid var(--line); background:rgba(255,255,255,.04);
  font-size:12px;
}

/* right visual */
.brand-card{
  background:rgba(255,255,255,.04); border:1px solid var(--line);
  border-radius:16px; padding:18px; box-shadow:var(--shadow);
}
.brand-card img{width:100%; border-radius:12px; display:block}

/* ====== features ====== */
.features{max-width:1100px; margin:10px auto 28px; padding:0 18px}
.features h2{margin:0 0 14px; font-size:20px}
.feature-grid{
  display:grid; gap:14px;
  grid-template-columns:repeat(auto-fit, minmax(230px,1fr));
}
.feature-card{
  background:var(--bg-1); border:1px solid var(--line);
  border-radius:16px; padding:14px 16px;
  box-shadow:var(--shadow); color:var(--text-2);
}
.feature-card .title{color:var(--text-1); font-weight:600; margin-bottom:6px}
.feature-card .icon{width:18px; height:18px; margin-right:8px}

/* ====== footer ====== */
.site-footer{
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.03);
  padding:16px 18px; color:var(--muted);
}
.site-footer .inner{
  max-width:1100px; margin:0 auto; display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap;
}

/* ====== helper: container ====== */
.container{max-width:1100px; margin:0 auto; padding:0 18px}

/* ====== utility ====== */
.card{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow);
  padding:14px;
}
.badge{font-size:11px; padding:3px 7px; border-radius:999px; border:1px solid var(--line)}
.badge.good{color:var(--good); border-color:rgba(74,222,128,.4); background:rgba(74,222,128,.08)}
.badge.bad{color:var(--bad); border-color:rgba(248,113,113,.4); background:rgba(248,113,113,.08)}

/* ====== focus states (a11y) ====== */
:focus-visible{
  outline:2px solid var(--accent-2);
  outline-offset:2px; border-radius:10px;
}

/* ====== simple grid helpers (if needed) ====== */
.row{display:flex; gap:12px; flex-wrap:wrap}
.col{flex:1 1 0}

/* ====== hidden class for progressive enhancement ====== */
.hidden{display:none !important}