/* ============================================================================
 * @hub-of-life/ui — premium-elite.css
 *
 * Visual layer that beats the competition. Inspired by Linear (motion polish),
 * Vercel (mesh gradients + density), Arc (personality), Stripe (numeric
 * confidence), Bloomberg (data-first density). No frameworks; pure CSS.
 *
 * Includes:
 *   - .elite-card  — premium glass card w/ gradient border + spring entrance
 *   - .elite-mesh  — mesh-gradient background that lives behind hero areas
 *   - .elite-tier-badge — animated tier pill (shimmer for best-in-class,
 *                        pulse for category-defining)
 *   - .elite-numeric — Stripe-style numeric with subtle glow + tabular
 *   - .elite-tilt   — 3D tilt-on-hover (no JS — pure perspective + transition)
 *   - .elite-stagger — children fade-in staggered with spring easing
 *   - .elite-shimmer-bar — animated bar shimmer for live-data feel
 *   - .elite-pulse — soft pulse halo for live regime indicators
 *   - .elite-spotlight — radial spotlight that follows pointer (uses CSS vars)
 *   - .elite-scroll-reveal — scroll-linked entrance animation
 *
 * Tokens (override per project via :root):
 *   --elite-accent       (#D4A853 default)
 *   --elite-accent-glow  (rgba 0.35 alpha)
 *   --elite-spring       cubic-bezier(0.34,1.56,0.64,1)
 *   --elite-easeOut      cubic-bezier(0.16,1,0.3,1)
 *   --elite-tier-color   (per-card override)
 * ========================================================================= */

:root {
  --elite-accent: #D4A853;
  --elite-accent-glow: rgba(212, 168, 83, 0.35);
  --elite-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --elite-easeOut: cubic-bezier(0.16, 1, 0.3, 1);
  --elite-easeBack: cubic-bezier(0.4, 0, 0.2, 1.4);
}

/* ────────────────────────────────────────────────────────────────────────
 * Mesh gradient background — beats single-orb ambient
 * ──────────────────────────────────────────────────────────────────────── */
.elite-mesh {
  position: relative;
  isolation: isolate;
}
.elite-mesh::before {
  content: '';
  position: absolute;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(circle at 18% 22%, rgba(212, 168, 83, 0.18), transparent 38%),
    radial-gradient(circle at 78% 14%, rgba(88, 166, 255, 0.14), transparent 42%),
    radial-gradient(circle at 28% 82%, rgba(163, 113, 247, 0.12), transparent 40%),
    radial-gradient(circle at 88% 78%, rgba(63, 185, 80, 0.10), transparent 38%);
  filter: blur(50px) saturate(1.1);
  opacity: 0.85;
  animation: elite-mesh-drift 24s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes elite-mesh-drift {
  0%   { transform: translate3d(0, 0, 0) scale(1); }
  50%  { transform: translate3d(2%, -1%, 0) scale(1.04); }
  100% { transform: translate3d(-1%, 2%, 0) scale(1.02); }
}

/* ────────────────────────────────────────────────────────────────────────
 * Premium card — gradient border + spring entrance
 * ──────────────────────────────────────────────────────────────────────── */
.elite-card {
  position: relative;
  border-radius: 16px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  backdrop-filter: blur(24px) saturate(1.1);
  -webkit-backdrop-filter: blur(24px) saturate(1.1);
  border: 1px solid transparent;
  background-clip: padding-box;
  isolation: isolate;
  transition:
    transform 0.45s var(--elite-easeOut),
    box-shadow 0.45s var(--elite-easeOut),
    border-color 0.3s ease;
  animation: elite-card-in 0.7s var(--elite-spring) both;
}
.elite-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  padding: 1px;
  background: linear-gradient(135deg,
    var(--elite-tier-color, var(--elite-accent)) 0%,
    rgba(255, 255, 255, 0.12) 28%,
    rgba(255, 255, 255, 0.04) 65%,
    var(--elite-tier-color, var(--elite-accent)) 100%);
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  opacity: 0.55;
  pointer-events: none;
  transition: opacity 0.4s ease;
}
.elite-card:hover {
  transform: translateY(-2px);
  box-shadow:
    0 12px 32px rgba(0, 0, 0, 0.35),
    0 0 0 1px var(--elite-tier-color, var(--elite-accent-glow)) inset;
}
.elite-card:hover::before {
  opacity: 0.95;
}
@keyframes elite-card-in {
  from { opacity: 0; transform: translateY(14px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ────────────────────────────────────────────────────────────────────────
 * Tier badges — shimmer / pulse / spin
 * ──────────────────────────────────────────────────────────────────────── */
.elite-tier-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  border: 1px solid var(--elite-tier-color, var(--elite-accent));
  background: color-mix(in srgb, var(--elite-tier-color, var(--elite-accent)) 12%, transparent);
  color: var(--elite-tier-color, var(--elite-accent));
  overflow: hidden;
  isolation: isolate;
  text-transform: uppercase;
}
.elite-tier-badge::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 25%,
    color-mix(in srgb, var(--elite-tier-color, var(--elite-accent)) 28%, transparent) 50%,
    transparent 75%
  );
  transform: translateX(-100%);
  pointer-events: none;
  z-index: -1;
}
.elite-tier-badge.tier-best { animation: elite-tier-breathe 4s ease-in-out infinite; }
.elite-tier-badge.tier-best::after { animation: elite-shimmer 3.5s ease-in-out infinite 0.5s; }
.elite-tier-badge.tier-defining {
  animation: elite-tier-breathe 3s ease-in-out infinite, elite-tier-glow 4s ease-in-out infinite;
}
.elite-tier-badge.tier-defining::after { animation: elite-shimmer 2.8s ease-in-out infinite; }
@keyframes elite-shimmer {
  0%   { transform: translateX(-110%); }
  60%  { transform: translateX(110%); }
  100% { transform: translateX(110%); }
}
@keyframes elite-tier-breathe {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.78; }
}
@keyframes elite-tier-glow {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 12px 2px var(--elite-tier-color, var(--elite-accent-glow)); }
}

/* ────────────────────────────────────────────────────────────────────────
 * Pulse halo — for live regime indicators
 * ──────────────────────────────────────────────────────────────────────── */
.elite-pulse {
  position: relative;
}
.elite-pulse::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: var(--elite-tier-color, var(--elite-accent));
  opacity: 0;
  animation: elite-pulse-ring 2.4s ease-out infinite;
  pointer-events: none;
  z-index: -1;
}
@keyframes elite-pulse-ring {
  0%   { transform: scale(0.92); opacity: 0.55; }
  70%  { transform: scale(1.18); opacity: 0; }
  100% { transform: scale(1.18); opacity: 0; }
}

/* ────────────────────────────────────────────────────────────────────────
 * Stripe-style numeric — tabular + subtle glow + animated underline
 * ──────────────────────────────────────────────────────────────────────── */
.elite-numeric {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum' on, 'cv11' on;
  letter-spacing: -0.02em;
  text-shadow: 0 0 24px var(--elite-accent-glow);
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}
.elite-numeric .unit {
  font-size: 0.55em;
  color: rgba(230, 237, 243, 0.55);
  text-shadow: none;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ────────────────────────────────────────────────────────────────────────
 * 3D tilt — perspective hover
 * ──────────────────────────────────────────────────────────────────────── */
.elite-tilt {
  transform-style: preserve-3d;
  transform: perspective(900px) rotateX(0deg) rotateY(0deg);
  transition: transform 0.5s var(--elite-easeOut), box-shadow 0.5s var(--elite-easeOut);
  will-change: transform;
}
.elite-tilt:hover {
  transform: perspective(900px) rotateX(-2deg) rotateY(2deg) translateY(-2px);
  box-shadow:
    0 18px 40px rgba(0, 0, 0, 0.4),
    0 4px 12px rgba(0, 0, 0, 0.25);
}

/* ────────────────────────────────────────────────────────────────────────
 * Pointer-following spotlight — sets --x and --y from JS, falls back gracefully
 * ──────────────────────────────────────────────────────────────────────── */
.elite-spotlight {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.elite-spotlight::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    600px circle at var(--x, 50%) var(--y, 50%),
    color-mix(in srgb, var(--elite-tier-color, var(--elite-accent)) 18%, transparent),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: 0;
}
.elite-spotlight:hover::before { opacity: 1; }

/* ────────────────────────────────────────────────────────────────────────
 * Stagger entrance — children fade-in with delay
 * ──────────────────────────────────────────────────────────────────────── */
.elite-stagger > * {
  animation: elite-card-in 0.6s var(--elite-spring) both;
}
.elite-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.elite-stagger > *:nth-child(2) { animation-delay: 0.12s; }
.elite-stagger > *:nth-child(3) { animation-delay: 0.20s; }
.elite-stagger > *:nth-child(4) { animation-delay: 0.28s; }
.elite-stagger > *:nth-child(5) { animation-delay: 0.36s; }
.elite-stagger > *:nth-child(6) { animation-delay: 0.44s; }
.elite-stagger > *:nth-child(7) { animation-delay: 0.52s; }
.elite-stagger > *:nth-child(8) { animation-delay: 0.60s; }

/* ────────────────────────────────────────────────────────────────────────
 * Scroll reveal — uses IntersectionObserver via .is-visible class
 * ──────────────────────────────────────────────────────────────────────── */
.elite-scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.7s var(--elite-easeOut),
    transform 0.7s var(--elite-easeOut);
  will-change: transform, opacity;
}
.elite-scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ────────────────────────────────────────────────────────────────────────
 * Shimmer bar — replaces dead progress bars
 * ──────────────────────────────────────────────────────────────────────── */
.elite-shimmer-bar {
  position: relative;
  height: 6px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  overflow: hidden;
}
.elite-shimmer-bar > .fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--elite-tier-color, var(--elite-accent)),
    color-mix(in srgb, var(--elite-tier-color, var(--elite-accent)) 60%, white)
  );
  border-radius: 999px;
  transition: width 0.8s var(--elite-easeOut);
  position: relative;
}
.elite-shimmer-bar > .fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 30%,
    rgba(255, 255, 255, 0.5) 50%,
    transparent 70%
  );
  animation: elite-shimmer 2.5s ease-in-out infinite;
}

/* ────────────────────────────────────────────────────────────────────────
 * Edge banner — competitive edge with arrow tip + gradient underline
 * ──────────────────────────────────────────────────────────────────────── */
.elite-edge {
  position: relative;
  margin-top: 12px;
  padding: 10px 12px 10px 38px;
  font-size: 11px;
  line-height: 1.5;
  border-radius: 8px;
  background: linear-gradient(180deg,
    color-mix(in srgb, var(--elite-tier-color, var(--elite-accent)) 7%, transparent),
    transparent);
  border-left: 2px solid var(--elite-tier-color, var(--elite-accent));
  color: rgba(230, 237, 243, 0.78);
}
.elite-edge::before {
  content: 'EDGE';
  position: absolute;
  left: 12px;
  top: 11px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
  font-family: 'JetBrains Mono', monospace;
  color: var(--elite-tier-color, var(--elite-accent));
}

/* ────────────────────────────────────────────────────────────────────────
 * Density typography — Bloomberg-tight numerics for forecasts
 * ──────────────────────────────────────────────────────────────────────── */
.elite-tabular {
  font-variant-numeric: tabular-nums;
  font-feature-settings: 'tnum' on, 'cv11' on, 'ss01' on;
  letter-spacing: -0.005em;
}

/* ────────────────────────────────────────────────────────────────────────
 * Reduced motion fallback
 * ──────────────────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .elite-card,
  .elite-stagger > *,
  .elite-tier-badge,
  .elite-tier-badge::after,
  .elite-pulse::after,
  .elite-mesh::before,
  .elite-shimmer-bar > .fill::after {
    animation: none !important;
  }
  .elite-tilt:hover,
  .elite-card:hover {
    transform: none;
  }
}