/* Alloyium landing page — dark/neon futuristic (agentxbook brand family).
   Zero external dependencies: system fonts, self-contained CSS. */

:root {
  --bg:        #06080f;
  --bg-2:      #0a0f1e;
  --ink:       #e8edf7;
  --ink-dim:   #9aa6bf;
  --cyan:      #22d3ee;
  --blue:      #3b82f6;
  --magenta:   #f43f5e;
  --amber:     #f59e0b;
  --ring-soft: rgba(255, 255, 255, 0.06);
  --card-bg:   rgba(255, 255, 255, 0.035);
  --card-bd:   rgba(255, 255, 255, 0.09);
  --maxw:      1080px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 50% -10%, #11203f 0%, transparent 60%),
    radial-gradient(900px 600px at 85% 110%, #2a0f24 0%, transparent 55%),
    radial-gradient(900px 600px at 10% 100%, #08213a 0%, transparent 55%),
    var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Decorative background layers */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 38%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 50% 38%, #000 0%, transparent 72%);
}
.bg-vignette {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(120% 80% at 50% 40%, transparent 55%, rgba(0,0,0,0.55) 100%);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  z-index: 1;
  flex: 1 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(2rem, 6vw, 5rem) 1.25rem 2rem;
  gap: 0.35rem;
}

/* The alloy core */
.core {
  position: relative;
  width: clamp(220px, 42vw, 340px);
  aspect-ratio: 1 / 1;
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
  filter: drop-shadow(0 0 40px rgba(59, 130, 246, 0.25));
}
.orb {
  position: absolute;
  inset: 38%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 38% 32%, #fff 0%, var(--cyan) 18%,
                    var(--blue) 42%, var(--magenta) 70%, var(--amber) 100%);
  box-shadow:
    0 0 24px 6px rgba(244, 63, 94, 0.45),
    0 0 60px 18px rgba(59, 130, 246, 0.35),
    inset 0 0 18px rgba(255,255,255,0.55);
  animation: pulse 4.6s ease-in-out infinite;
}
.ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid var(--ring-soft);
  transform: translate(-50%, -50%);
  transform-origin: center;
}
.ring-1 {
  width: 100%; height: 100%;
  border-color: rgba(34, 211, 238, 0.30);
  animation: spin 18s linear infinite;
}
.ring-2 {
  width: 72%; height: 72%;
  border-color: rgba(244, 63, 94, 0.30);
  animation: spin 12s linear infinite reverse;
}
.ring-3 {
  width: 46%; height: 46%;
  border-color: rgba(245, 158, 11, 0.32);
  animation: spin 8s linear infinite;
}
/* Orbiting node rides the top of each ring */
.node {
  position: absolute;
  top: -5px;
  left: 50%;
  width: 10px;
  height: 10px;
  margin-left: -5px;
  border-radius: 50%;
  background: #fff;
}
.ring-1 .node { box-shadow: 0 0 12px 3px var(--cyan);    background: var(--cyan); }
.ring-2 .node { box-shadow: 0 0 12px 3px var(--magenta); background: var(--magenta); }
.ring-3 .node { box-shadow: 0 0 12px 3px var(--amber);   background: var(--amber); }

/* Wordmark */
.wordmark {
  margin: 0;
  font-size: clamp(2.6rem, 11vw, 6.5rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1;
  background: linear-gradient(100deg, var(--cyan) 0%, var(--blue) 32%,
                              var(--magenta) 66%, var(--amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 26px rgba(59, 130, 246, 0.35));
}
.wordmark .tld {
  -webkit-text-fill-color: var(--ink-dim);
  color: var(--ink-dim);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.tagline {
  margin: 1rem 0 0;
  font-size: clamp(1.05rem, 2.6vw, 1.5rem);
  font-weight: 600;
  color: var(--ink);
}
.lede {
  margin: 0.35rem 0 0;
  max-width: 36ch;
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--ink-dim);
}

/* Status chip */
.status-chip {
  margin-top: 1.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--card-bd);
  background: var(--card-bg);
  color: var(--ink-dim);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
}
.status-chip .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px 2px var(--amber);
  animation: blink 2.4s ease-in-out infinite;
}

/* Pillars */
.pillars {
  margin-top: clamp(2.5rem, 7vw, 4.5rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  width: 100%;
  max-width: var(--maxw);
}
.card {
  text-align: left;
  padding: 1.25rem 1.35rem;
  border-radius: 14px;
  border: 1px solid var(--card-bd);
  background: var(--card-bg);
  backdrop-filter: blur(6px);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover {
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-3px);
}
.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-dim);
  line-height: 1.5;
}

/* Footer */
.footer {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1.5rem 1rem 2rem;
  color: var(--ink-dim);
  font-size: 0.85rem;
}
.footer .mark { color: var(--ink); font-weight: 600; }
.footer .sep { opacity: 0.5; }

/* Animations */
@keyframes spin  { to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes pulse {
  0%, 100% { transform: scale(1);    opacity: 0.95; }
  50%      { transform: scale(1.07); opacity: 1; }
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* Responsive */
@media (max-width: 640px) {
  .pillars { grid-template-columns: 1fr; }
}

/* Respect reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .ring, .orb, .status-chip .dot { animation: none !important; }
  .card { transition: none; }
}