:root{
  --bg0:#0c1424;
  --bg1:#0e2036;
  --card: rgba(255,255,255,0.08);
  --card2: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.12);
  --text: rgba(245,250,255,0.92);
  --muted: rgba(245,250,255,0.72);
  --muted2: rgba(245,250,255,0.56);
  --accent: rgba(180, 220, 255, 0.95);
  --shadow: 0 14px 40px rgba(0,0,0,0.35);
  --radius: 18px;
  --max: 1060px;
  --focus: rgba(180,220,255,0.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg0);
  overflow-x:hidden;
}

.bg{
  position:fixed;
  inset:0;
  background:
    radial-gradient(1200px 700px at 15% 5%, rgba(130,200,255,0.22), transparent 55%),
    radial-gradient(900px 600px at 90% 20%, rgba(120,255,230,0.10), transparent 55%),
    radial-gradient(1000px 700px at 40% 105%, rgba(150,180,255,0.18), transparent 60%),
    linear-gradient(135deg, var(--bg0), var(--bg1));
  transform: translateZ(0);
  z-index:-3;
}

.noise{
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:0.14;
  z-index:-2;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
}

a{color: var(--accent); text-decoration:none}
a:hover{text-decoration:underline}

.container{
  max-width: var(--max);
  padding: 20px 18px 40px;
  margin: 0 auto;
}

.topbar{
  position:sticky;
  top:0;
  z-index:10;
  backdrop-filter: blur(14px);
  background: rgba(10,16,28,0.35);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 12px 18px;
}

.brand{
  display:flex;
  gap:10px;
  align-items:center;
  font-weight:700;
  letter-spacing:0.2px;
  color: var(--text);
  text-decoration:none;
}

.logo{
  width:26px; height:26px;
  display:grid; place-items:center;
  border:1px solid rgba(255,255,255,0.16);
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
}

.nav{
  display:flex;
  gap: 14px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.nav a{
  color: var(--muted);
  padding:8px 10px;
  border-radius:12px;
  border:1px solid transparent;
}
.nav a:hover{
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.08);
  text-decoration:none;
}
.nav a[aria-current="page"]{
  background: rgba(180,220,255,0.10);
  border-color: rgba(180,220,255,0.22);
  color: var(--text);
}

.grid{
  display:grid;
  gap: 16px;
}
.grid.two{grid-template-columns: 1.2fr 0.8fr}
.grid.three{grid-template-columns: repeat(3, 1fr)}
@media (max-width: 980px){
  .grid.two, .grid.three{grid-template-columns: 1fr}
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.card.soft{ background: var(--card2); }

h1{font-size: 2rem; margin: 0 0 10px}
h2{font-size: 1.25rem; margin: 18px 0 10px}
h3{font-size: 1.05rem; margin: 16px 0 8px}
p{line-height:1.6; margin: 10px 0}
.small{font-size:0.92rem}
.muted{color: var(--muted)}
.muted2{color: var(--muted2)}

.row{display:flex; gap:10px; flex-wrap:wrap; align-items:center}
.spread{display:flex; justify-content:space-between; gap:12px; align-items:center; flex-wrap:wrap}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid rgba(180,220,255,0.24);
  background: rgba(180,220,255,0.12);
  color: var(--text);
  font-weight: 600;
  cursor:pointer;
  text-decoration:none;
  user-select:none;
}
.btn:hover{background: rgba(180,220,255,0.16); text-decoration:none}
.btn:active{transform: translateY(1px)}
.btn.ghost{
  border-color: rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
  color: var(--muted);
}
.btn.ghost:hover{background: rgba(255,255,255,0.08); color: var(--text)}

.kbd{
  border:1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  padding: 2px 8px;
  border-radius: 10px;
  font-size:0.9rem;
  color: var(--muted);
}

.hr{
  height:1px;
  background: rgba(255,255,255,0.12);
  margin: 14px 0;
}

input[type="range"]{width:100%}
label{display:block; font-weight:600; margin: 10px 0 6px; color: var(--muted)}
.field{
  border: 1px solid rgba(255,255,255,0.14);
  background: rgba(0,0,0,0.12);
  color: var(--text);
  border-radius: 14px;
  padding: 11px 12px;
  width:100%;
}
.field:focus, button:focus, a:focus{
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.badge{
  display:inline-flex;
  gap:6px;
  align-items:center;
  padding: 4px 10px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,0.14);
  background: rgba(255,255,255,0.06);
  color: var(--muted);
  font-size:0.9rem;
}

.footer{
  max-width: var(--max);
  margin: 0 auto;
  padding: 18px 18px 30px;
  color: var(--muted2);
}
.footer-links{
  display:flex;
  gap: 14px;
  flex-wrap:wrap;
  margin-bottom: 10px;
}
.footer a{color: var(--muted); text-decoration:none}
.footer a:hover{color: var(--text); text-decoration:underline}

/* Breathing orb */
.orb-wrap{
  display:grid;
  place-items:center;
  padding: 12px 0 4px;
}
.orb{
  width: 220px;
  height: 220px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background:
    radial-gradient(circle at 35% 30%, rgba(255,255,255,0.16), transparent 55%),
    radial-gradient(circle at 70% 70%, rgba(180,220,255,0.18), transparent 55%),
    rgba(255,255,255,0.06);
  box-shadow: 0 18px 60px rgba(0,0,0,0.4);
  transform: scale(0.88);
  transition: transform 900ms ease;
}
.orb.inhale{transform: scale(1.02)}
.orb.exhale{transform: scale(0.80)}
.orb.hold{transform: scale(0.92)}

.center{
  text-align:center;
}

.list{
  margin: 10px 0 0;
  padding-left: 18px;
}
.list li{margin: 6px 0; line-height:1.55}

.notice{
  border-left: 3px solid rgba(180,220,255,0.35);
  padding: 10px 12px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
}