/* Basic modern styles for Bitcoin Knobs site */
:root {
  --bg: #0e1217;
  --panel: #141a22;
  --text: #e5ecf4;
  --muted: #9bb0c2;
  --accent: #f59e0b;
  --green: #22c55e;
  --shadow: 0 10px 30px rgba(0,0,0,.3);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 80% -10%, #1b2430 0%, var(--bg) 40%) no-repeat, var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
  padding: 24px;
}

.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(14,18,23,.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid #1f2732;
}

.nav {
  display: flex; align-items: center; justify-content: space-between;
}

.nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-weight: 600; }
.nav a:hover { color: var(--text); }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; }
.logo { width: 28px; height: 28px; }

.hero {
  text-align: center;
  padding: 80px 0 40px;
}
.hero h1 { font-size: clamp(40px, 7vw, 72px); margin: 0 0 12px; }
.tagline { font-size: clamp(16px, 2.4vw, 22px); color: var(--muted); margin: 0 auto 20px; max-width: 800px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }

.btn {
  display: inline-block; padding: 12px 18px; border-radius: 14px;
  border: 1px solid #273042; text-decoration: none; font-weight: 700;
  box-shadow: var(--shadow);
}
.btn.primary { background: linear-gradient(90deg, var(--accent), #ffcc66); color: #1a1200; }
.btn.ghost { background: transparent; color: var(--text); }
.btn:hover { transform: translateY(-1px); }

.hero-art {
  margin: 30px auto 0; width: min(900px, 92vw); height: 220px;
  background:
    radial-gradient(circle at 15% 40%, rgba(245,158,11,.2), transparent 40%),
    radial-gradient(circle at 85% 60%, rgba(34,197,94,.18), transparent 45%),
    linear-gradient(135deg, #111723 0%, #151c27 100%);
  border: 1px solid #223047;
  border-radius: 16px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.hero-art::before,
.hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-radial-gradient(circle at 20% 30%, rgba(255,255,255,.07) 0 2px, transparent 2px 6px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 2px, transparent 2px 8px);
  mix-blend-mode: overlay;
  opacity: .6;
}

.section { padding: 30px 0; }
.section h2 { font-size: 28px; margin: 0 0 10px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; padding-left: 18px; }

.card {
  background: var(--panel);
  border: 1px solid #223047;
  border-radius: 12px;
  padding: 14px;
  overflow: auto;
  box-shadow: var(--shadow);
}

.site-footer {
  border-top: 1px solid #1f2732;
  background: #0b0f14;
  color: var(--muted);
  text-align: center;
  padding: 30px 0 40px;
}

/* Small tweaks */
code { background: #0b0f14; border: 1px solid #223047; padding: 2px 6px; border-radius: 8px; }