/**
 * LVL LTD design system v1
 * Shared tokens + components for marketplace, learn, brand, hub chrome.
 * Dark base #05070d · signature accent indigo · money green reserved for buy.
 */
:root {
  /* Color */
  --lvl-bg: #05070d;
  --lvl-bg-elevated: #0c1220;
  --lvl-bg-card: rgba(14, 22, 40, 0.94);
  --lvl-fg: #f4f7ff;
  --lvl-muted: #a8b6d4;
  --lvl-faint: #7d8dad;
  --lvl-border: rgba(148, 163, 184, 0.14);
  --lvl-border-strong: rgba(148, 163, 184, 0.28);
  --lvl-accent: #6366f1;
  --lvl-accent-2: #3b82f6;
  --lvl-accent-soft: rgba(99, 102, 241, 0.14);
  --lvl-money: #22c55e;
  --lvl-money-hi: #4ade80;
  --lvl-money-text: #052e16;
  --lvl-ok: #34d399;
  --lvl-warn: #fbbf24;
  --lvl-danger: #f87171;
  --lvl-link: #9ec5ff;
  --lvl-link-hover: #dbeafe;

  /* Type */
  --lvl-font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --lvl-display: "Space Grotesk", var(--lvl-font);
  --lvl-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Space (4px base) */
  --lvl-1: 0.25rem;
  --lvl-2: 0.5rem;
  --lvl-3: 0.75rem;
  --lvl-4: 1rem;
  --lvl-5: 1.25rem;
  --lvl-6: 1.5rem;
  --lvl-8: 2rem;
  --lvl-10: 2.5rem;
  --lvl-12: 3rem;
  --lvl-16: 4rem;

  /* Radius */
  --lvl-radius-sm: 10px;
  --lvl-radius: 16px;
  --lvl-radius-lg: 22px;
  --lvl-pill: 999px;

  /* Shadow */
  --lvl-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  --lvl-max: 1120px;
  --lvl-nav-h: 68px;
}

/* Map to existing site-v2 token names when both load */
:root {
  --bg: var(--lvl-bg);
  --bg-elevated: var(--lvl-bg-elevated);
  --bg-card: var(--lvl-bg-card);
  --fg: var(--lvl-fg);
  --muted: var(--lvl-muted);
  --faint: var(--lvl-faint);
  --border: var(--lvl-border);
  --border-strong: var(--lvl-border-strong);
  --primary: var(--lvl-accent-2);
  --primary-2: var(--lvl-accent);
  --cta: #16a34a;
  --cta-hi: var(--lvl-money-hi);
  --cta-text: var(--lvl-money-text);
  --accent: var(--lvl-ok);
  --money: var(--lvl-money);
  --font: var(--lvl-font);
  --display: var(--lvl-display);
  --mono: var(--lvl-mono);
  --radius: var(--lvl-radius);
  --radius-sm: var(--lvl-radius-sm);
  --shadow: var(--lvl-shadow);
  --max: var(--lvl-max);
  --nav-h: var(--lvl-nav-h);
}

/* Primitives */
.lvl-container {
  width: min(var(--lvl-max), calc(100% - 2rem));
  margin-inline: auto;
}

.lvl-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #a5b4fc;
}
.lvl-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lvl-ok);
  box-shadow: 0 0 10px var(--lvl-ok);
}

.lvl-display {
  font-family: var(--lvl-display);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0;
}
.lvl-h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 700; }
.lvl-h2 { font-size: clamp(1.55rem, 3vw, 2.2rem); font-weight: 700; }
.lvl-h3 { font-size: 1.15rem; font-weight: 650; }
.lvl-lede {
  font-size: clamp(1.05rem, 1.6vw, 1.18rem);
  color: var(--lvl-muted);
  line-height: 1.7;
  max-width: 38rem;
}
.lvl-mono { font-family: var(--lvl-mono); font-size: 0.9em; }

/* Buttons */
.lvl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: var(--lvl-pill);
  padding: 0.7rem 1.15rem;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  color: var(--lvl-fg);
  background: transparent;
  transition: transform 0.15s ease, box-shadow 0.15s, background 0.15s;
}
.lvl-btn:hover { transform: translateY(-1px); }
.lvl-btn:focus-visible { outline: 2px solid var(--lvl-accent); outline-offset: 2px; }
.lvl-btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #6366f1 55%, #8b5cf6 100%);
  color: #fff;
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.35);
  border-color: rgba(147, 197, 253, 0.22);
}
.lvl-btn-buy {
  background: linear-gradient(135deg, #16a34a, #22c55e 55%, #4ade80);
  color: var(--lvl-money-text);
  font-weight: 800;
  box-shadow: 0 12px 32px rgba(22, 163, 74, 0.4);
  border-color: rgba(134, 239, 172, 0.35);
}
.lvl-btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--lvl-border-strong);
}
.lvl-btn-ghost {
  border-color: var(--lvl-border);
  color: var(--lvl-muted);
}
.lvl-btn-sm { padding: 0.45rem 0.85rem; font-size: 0.82rem; }
.lvl-btn-lg { padding: 0.9rem 1.45rem; font-size: 1rem; }

/* Cards */
.lvl-card {
  background: var(--lvl-bg-card);
  border: 1px solid var(--lvl-border);
  border-radius: var(--lvl-radius);
  box-shadow: var(--lvl-shadow);
  backdrop-filter: blur(14px);
}
.lvl-card-pad { padding: 1.2rem 1.25rem; }
.lvl-card-hover { transition: transform 0.2s ease, border-color 0.2s; }
.lvl-card-hover:hover {
  transform: translateY(-3px);
  border-color: rgba(99, 102, 241, 0.4);
}

/* Badges */
.lvl-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.22rem 0.55rem;
  border-radius: var(--lvl-pill);
  border: 1px solid rgba(52, 211, 153, 0.35);
  color: #86efac;
  background: rgba(34, 197, 94, 0.08);
}
.lvl-badge-cat {
  border-color: rgba(129, 140, 248, 0.35);
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.1);
  text-transform: none;
  letter-spacing: 0.02em;
  font-weight: 600;
}
.lvl-badge-new {
  border-color: rgba(251, 191, 36, 0.4);
  color: #fde68a;
  background: rgba(251, 191, 36, 0.1);
}

/* Status */
.lvl-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--lvl-muted);
}
.lvl-status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lvl-faint);
}
.lvl-status-live::before {
  background: var(--lvl-ok);
  box-shadow: 0 0 8px var(--lvl-ok);
}
.lvl-status-warn::before { background: var(--lvl-warn); }
.lvl-status-down::before { background: var(--lvl-danger); }

/* Tables */
.lvl-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.lvl-table th,
.lvl-table td {
  text-align: left;
  padding: 0.75rem 0.65rem;
  border-bottom: 1px solid var(--lvl-border);
}
.lvl-table th {
  color: var(--lvl-faint);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.lvl-table td.mono { font-family: var(--lvl-mono); font-size: 0.82rem; }

/* Verified on Base chip */
.lvl-verified {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: #86efac;
  text-decoration: none;
  border: 1px solid rgba(52, 211, 153, 0.3);
  background: rgba(16, 185, 129, 0.08);
  padding: 0.35rem 0.7rem;
  border-radius: var(--lvl-pill);
}
.lvl-verified:hover { color: #bbf7d0; border-color: rgba(52, 211, 153, 0.5); }

/* Brand marks */
.lvl-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-family: var(--lvl-display);
  font-weight: 700;
  font-size: 0.72rem;
  color: #fff;
  background: linear-gradient(135deg, var(--lvl-accent-2), var(--lvl-accent));
  box-shadow: 0 0 18px rgba(99, 102, 241, 0.35);
}
.lvl-mark-neuro {
  background: linear-gradient(135deg, #0ea5e9, #6366f1 60%, #a78bfa);
}
.lvl-mark-trek {
  background: linear-gradient(135deg, #f59e0b, #ef4444 70%);
}
.lvl-mark-music {
  background: linear-gradient(135deg, #ec4899, #8b5cf6 60%, #3b82f6);
}

/* Style guide helpers */
.sg-swatch {
  border-radius: 12px;
  border: 1px solid var(--lvl-border);
  overflow: hidden;
  min-height: 88px;
}
.sg-swatch .chip {
  height: 56px;
}
.sg-swatch .meta {
  padding: 0.45rem 0.65rem;
  font-size: 0.75rem;
  color: var(--lvl-muted);
  background: var(--lvl-bg-elevated);
}
.sg-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  margin: 1rem 0 1.75rem;
}

/* ─── P1: Proof strip ─── */
.lvl-proof-strip {
  border: 1px solid rgba(129, 140, 248, 0.28);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(15, 23, 42, 0.92));
  border-radius: var(--lvl-radius);
  padding: 0.9rem 1.05rem;
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 1rem 0;
}
.lvl-proof-strip--loading,
.lvl-proof-strip--unavailable { color: var(--lvl-muted); }
.lvl-proof-strip__zero {
  border: 1px solid rgba(251, 191, 36, 0.35);
  background: rgba(251, 191, 36, 0.08);
  border-radius: var(--lvl-radius-sm);
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.65rem;
  font-size: 0.85rem;
  color: #fde68a;
}
.lvl-proof-strip__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.1rem;
  align-items: baseline;
}
.lvl-proof-strip__stat b {
  font-family: var(--lvl-display);
  font-size: 1.15rem;
  color: var(--lvl-fg);
  margin-right: 0.25rem;
}
.lvl-proof-strip__cta a { color: var(--lvl-link); font-weight: 600; }
.lvl-proof-strip__list {
  margin: 0.55rem 0 0;
  padding-left: 1.1rem;
  color: var(--lvl-muted);
  font-size: 0.85rem;
}
.lvl-proof-strip__list code { color: #c7d2fe; }
.lvl-proof-strip__last { margin: 0.5rem 0 0; color: var(--lvl-muted); font-size: 0.88rem; }
.lvl-proof-strip__footnote {
  margin: 0.55rem 0 0;
  font-size: 0.75rem;
  color: var(--lvl-faint);
}
.lvl-proof-strip--compact .lvl-proof-strip__list,
.lvl-proof-strip--compact .lvl-proof-strip__footnote { display: none; }

/* ─── P1: Skill card sketch ─── */
.lvl-skill-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.1rem 1.15rem;
  background: var(--lvl-bg-card);
  border: 1px solid var(--lvl-border);
  border-radius: var(--lvl-radius);
  min-height: 9.5rem;
}
.lvl-skill-card__title {
  font-family: var(--lvl-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.02em;
}
.lvl-skill-card__summary {
  color: var(--lvl-muted);
  font-size: 0.88rem;
  line-height: 1.45;
  flex: 1;
  margin: 0;
}
.lvl-skill-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.8rem;
}
.lvl-skill-card__price {
  font-weight: 800;
  color: var(--lvl-money-hi);
  font-family: var(--lvl-mono);
}
.lvl-skill-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

/* ─── P1: Gas callout ─── */
.lvl-gas-callout {
  border: 1px solid rgba(251, 191, 36, 0.4);
  background: rgba(251, 191, 36, 0.08);
  border-radius: var(--lvl-radius-sm);
  padding: 0.75rem 0.9rem;
  font-size: 0.88rem;
  color: #fde68a;
  margin: 0.75rem 0;
}
.lvl-gas-callout strong { color: #fef3c7; }

/* ─── P1: Ecosystem footer ─── */
.lvl-eco-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  padding: 1rem 0;
  border-top: 1px solid var(--lvl-border);
  font-size: 0.85rem;
  color: var(--lvl-muted);
}
.lvl-eco-footer a {
  color: var(--lvl-link);
  text-decoration: none;
  font-weight: 600;
}
.lvl-eco-footer a:hover { color: var(--lvl-link-hover); }
.lvl-eco-footer__label {
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.72rem;
  color: var(--lvl-faint);
  font-weight: 700;
}

/* ─── Skeleton loaders ─── */
.lvl-skeleton {
  background: linear-gradient(
    90deg,
    rgba(148, 163, 184, 0.08) 0%,
    rgba(148, 163, 184, 0.16) 50%,
    rgba(148, 163, 184, 0.08) 100%
  );
  background-size: 200% 100%;
  animation: lvl-shimmer 1.2s ease-in-out infinite;
  border-radius: var(--lvl-radius-sm);
  min-height: 1rem;
}
@keyframes lvl-shimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* ─── P2: Accessibility ─── */
.lvl-skip-link {
  position: absolute;
  left: 0.75rem;
  top: 0.75rem;
  z-index: 10000;
  padding: 0.55rem 0.9rem;
  border-radius: var(--lvl-radius-sm);
  background: #1e293b;
  color: #f8fafc;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  border: 2px solid #93c5fd;
  transform: translateY(-200%);
  transition: transform 0.15s ease;
}
.lvl-skip-link:focus,
.lvl-skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid #fbbf24;
  outline-offset: 2px;
}
:focus-visible {
  outline: 2px solid var(--lvl-accent-2);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .lvl-skeleton { animation: none; }
}

/* ─── P2: Empty state (honest zero) ─── */
.lvl-empty {
  border: 1px dashed rgba(148, 163, 184, 0.35);
  border-radius: var(--lvl-radius);
  padding: 1.1rem 1.2rem;
  background: rgba(15, 23, 42, 0.85);
  text-align: left;
}
.lvl-empty__title {
  font-family: var(--lvl-display);
  font-size: 1.1rem;
  margin: 0 0 0.4rem;
  color: var(--lvl-fg);
}
.lvl-empty__body {
  margin: 0 0 0.85rem;
  color: var(--lvl-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}
.lvl-empty__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

/* ─── P2: Start-here canary banner ─── */
.lvl-canary-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--lvl-radius);
  border: 1px solid rgba(74, 222, 128, 0.4);
  background: linear-gradient(135deg, rgba(22, 163, 74, 0.14), rgba(59, 130, 246, 0.08));
  margin: 1rem 0;
}
.lvl-canary-banner strong { color: #86efac; }
.lvl-canary-banner p {
  margin: 0;
  flex: 1 1 12rem;
  font-size: 0.9rem;
  color: var(--lvl-muted);
  line-height: 1.45;
}

/* ─── P2: Ecosystem bridge cards ─── */
.lvl-bridge-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .lvl-bridge-grid { grid-template-columns: 1fr 1fr 1fr; }
}
.lvl-bridge-card {
  border: 1px solid var(--lvl-border);
  border-radius: var(--lvl-radius);
  padding: 1rem 1.1rem;
  background: var(--lvl-bg-card);
}
.lvl-bridge-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-family: var(--lvl-display);
}
.lvl-bridge-card p {
  margin: 0 0 0.75rem;
  color: var(--lvl-muted);
  font-size: 0.88rem;
  line-height: 1.45;
}
.lvl-bridge-card .lvl-bridge-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.85rem;
}

/* Mobile sticky canary (optional) */
@media (max-width: 640px) {
  .lvl-mobile-canary {
    position: sticky;
    bottom: 0;
    z-index: 40;
    padding: 0.65rem 0.85rem;
    background: rgba(5, 7, 13, 0.94);
    border-top: 1px solid rgba(74, 222, 128, 0.35);
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
  }
}