:root{
  --shadow-pink: 0 10px 40px -12px color-mix(in srgb, var(--accent) 55%, transparent);
  --shadow-aqua: 0 10px 40px -12px color-mix(in srgb, var(--accent-2) 50%, transparent);
}

/* ===== Aurora mesh backdrop ===== */
body{
  background:
    radial-gradient(at 20% 30%, color-mix(in srgb, var(--accent) 85%, transparent) 0, transparent 50%),
    radial-gradient(at 80% 20%, color-mix(in srgb, var(--accent-2) 85%, transparent) 0, transparent 50%),
    radial-gradient(at 50% 80%, color-mix(in srgb, var(--accent) 40%, var(--accent-2) 40%) 0, transparent 50%),
    var(--bg);
  background-attachment: fixed;
}

/* subtle grain overlay on hero */
.hero{
  position: relative;
  background:
    radial-gradient(at 15% 25%, color-mix(in srgb, var(--accent) 35%, transparent) 0, transparent 45%),
    radial-gradient(at 85% 30%, color-mix(in srgb, var(--accent-2) 35%, transparent) 0, transparent 45%);
  background-size: 180% 180%;
  background-position: 0% 0%;
  animation: meshDrift 24s ease-in-out infinite alternate;
  border-bottom: 1px solid var(--line);
}
.hero::after{
  content:"";
  position:absolute; inset:0;
  background-image: radial-gradient(color-mix(in srgb, var(--text) 7%, transparent) 0.5px, transparent 0.5px);
  background-size: 3px 3px;
  opacity: .35;
  pointer-events: none;
  mix-blend-mode: overlay;
}
@keyframes meshDrift{
  from{ background-position: 0% 0%; }
  to{ background-position: 100% 100%; }
}

/* ===== Headings ===== */
.hero-title, .article h2{
  letter-spacing: .01em;
  font-weight: 700;
}
.hero-title{
  background: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 60%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.article h2{
  position: relative;
  padding-left: .7rem;
}
.article h2::before{
  content:""; position:absolute; left:0; top:.15em; bottom:.15em; width:4px;
  border-radius: 4px;
  background: linear-gradient(var(--accent), var(--accent-2));
}

/* ===== Panels / cards ===== */
.card, .feature, .faq-item{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-size: 200% 200%;
  background-position: 0% 50%;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease, background-position 6s ease;
}
.card:hover, .feature:hover{
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: var(--shadow-pink);
  background-position: 100% 50%;
}

/* feature icon — aurora chip */
.feature .icon{
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: calc(var(--radius) * .7);
  box-shadow: var(--shadow-aqua);
}

/* ===== Buttons ===== */
.btn-primary{
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border: none;
  box-shadow: var(--shadow-pink);
  transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.btn-primary:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow-aqua);
  filter: brightness(1.05);
}
.btn-ghost{
  border: 1px solid color-mix(in srgb, var(--accent-2) 50%, var(--line));
  color: var(--text);
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.btn-ghost:hover{
  border-color: var(--accent-2);
  box-shadow: var(--shadow-aqua);
  transform: translateY(-2px);
}

/* ===== Badges / facts ===== */
.badge{
  background: color-mix(in srgb, var(--accent) 18%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  color: var(--text);
  border-radius: 999px;
}
.fact{
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.fact b{
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ===== Tabs ===== */
.tab{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: all .25s ease;
}
.tab.active{
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border-color: transparent;
  box-shadow: var(--shadow-pink);
}

/* ===== Catalog tiles ===== */
.tile{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.tile:hover{
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent-2) 55%, var(--line));
  box-shadow: var(--shadow-aqua);
}
.tile.noimg{
  background:
    radial-gradient(at 30% 20%, color-mix(in srgb, var(--accent) 45%, transparent) 0, transparent 55%),
    radial-gradient(at 75% 85%, color-mix(in srgb, var(--accent-2) 45%, transparent) 0, transparent 55%),
    var(--panel-2);
}
.tile .nm{ color: var(--text); font-weight: 600; }
.tile .gp{ color: var(--on-accent); background: color-mix(in srgb, var(--accent) 70%, transparent); border-radius: 999px; }

/* ===== FAQ ===== */
.faq-item{ background: var(--panel-2); }
.faq-item:hover{ border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.faq-q{ color: var(--text); font-weight: 600; }

/* ===== Header / table ===== */
.site-header{
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.table th{
  background: color-mix(in srgb, var(--accent) 14%, var(--panel));
  color: var(--text);
}
.table td, .table th{ border-color: var(--line); }