/**
 * NEXUS Design System v1
 * Tokens + reusable component classes for the Automation OS.
 */
:root {
  --nx-bg: #f4f6f9;
  --nx-surface: #ffffff;
  --nx-text: #0f172a;
  --nx-muted: #64748b;
  --nx-primary: #4f46e5;
  --nx-primary-dark: #3730a3;
  --nx-accent: #0d9488;
  --nx-danger: #dc2626;
  --nx-ok: #059669;
  --nx-warn: #d97706;
  --nx-border: #e2e8f0;
  --nx-radius-sm: 8px;
  --nx-radius: 14px;
  --nx-radius-lg: 20px;
  --nx-radius-pill: 999px;
  --nx-shadow: 0 8px 30px rgba(15, 23, 42, 0.06);
  --nx-space-1: 4px;
  --nx-space-2: 8px;
  --nx-space-3: 12px;
  --nx-space-4: 16px;
  --nx-space-5: 24px;
}

/* —— Components —— */
.nx-btn {
  border: 1px solid var(--nx-border);
  background: var(--nx-surface);
  color: var(--nx-text);
  padding: 8px 14px;
  border-radius: var(--nx-radius-pill);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nx-btn--primary {
  background: var(--nx-primary);
  border-color: var(--nx-primary);
  color: #fff;
}
.nx-btn--primary:hover { background: var(--nx-primary-dark); }
.nx-btn--accent {
  background: var(--nx-accent);
  border-color: var(--nx-accent);
  color: #fff;
}
.nx-btn--ghost { background: transparent; }
.nx-btn--danger { color: var(--nx-danger); border-color: #fecaca; }
.nx-btn--sm { padding: 6px 10px; font-size: 0.8rem; }

.nx-card {
  background: var(--nx-surface);
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius);
  padding: var(--nx-space-4);
  box-shadow: var(--nx-shadow);
}
.nx-card--stat strong {
  display: block;
  font-size: 1.5rem;
  color: var(--nx-primary-dark);
  margin-top: 4px;
}
.nx-card--priority {
  border-left: 4px solid var(--nx-accent);
  margin-bottom: var(--nx-space-3);
}

.nx-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--nx-radius-pill);
  background: #e0e7ff;
  color: #3730a3;
}
.nx-badge--live { background: #d1fae5; color: #065f46; }
.nx-badge--working { background: #d1fae5; color: #065f46; }
.nx-badge--beta { background: #e0e7ff; color: #3730a3; }
.nx-badge--soon { background: #f1f5f9; color: #475569; }
.nx-badge--high { background: #fee2e2; color: #991b1b; }

.nx-hero {
  background: linear-gradient(135deg, #312e81 0%, #4f46e5 45%, #0f766e 100%);
  color: #fff;
  border-radius: var(--nx-radius-lg);
  padding: 28px 24px;
  margin-bottom: 18px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
}
.nx-hero h1 { margin: 0 0 8px; font-size: 1.65rem; letter-spacing: -0.03em; }
.nx-hero p { margin: 0 0 14px; opacity: 0.92; max-width: 560px; }
.nx-hero__role {
  margin: 0 0 4px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.85;
}

.nx-stack { display: flex; flex-direction: column; gap: var(--nx-space-3); }
.nx-row { display: flex; flex-wrap: wrap; gap: var(--nx-space-2); align-items: center; }
.nx-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--nx-space-3);
}
.nx-grid-2 {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 14px;
}
@media (max-width: 800px) {
  .nx-grid-2 { grid-template-columns: 1fr; }
}

.nx-empty {
  text-align: center;
  padding: 28px 16px;
  color: var(--nx-muted);
  border: 1px dashed var(--nx-border);
  border-radius: var(--nx-radius);
}

.nx-progress {
  height: 10px;
  background: #e5e7eb;
  border-radius: var(--nx-radius-pill);
  overflow: hidden;
}
.nx-progress > i {
  display: block;
  height: 100%;
  background: var(--nx-accent);
  border-radius: var(--nx-radius-pill);
}

.nx-wizard {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}
.nx-wizard span {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--nx-radius-pill);
  background: #f1f5f9;
  color: var(--nx-muted);
}
.nx-wizard span.is-done { background: #d1fae5; color: #065f46; }
.nx-wizard span.is-current { background: var(--nx-primary); color: #fff; }

.nx-layer {
  border: 1px solid var(--nx-border);
  border-radius: var(--nx-radius);
  padding: 14px;
  background: var(--nx-surface);
}
.nx-layer h3 { margin: 0 0 6px; }
.nx-layer .status-live {
  color: var(--nx-ok);
  font-weight: 700;
  font-size: 0.78rem;
}

.nx-muted { color: var(--nx-muted); font-size: 0.9rem; }
.nx-evidence {
  font-size: 0.8rem;
  color: var(--nx-muted);
  font-family: ui-monospace, Consolas, monospace;
}

/* Advisor + Hub tiers */
.hub-card--featured {
  box-shadow: 0 12px 36px rgba(79, 70, 229, 0.18);
  border-color: #a5b4fc;
}
.hub-card--working {
  background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 100%);
}
.hub-card--beta {
  background: linear-gradient(180deg, #ffffff 0%, #eef2ff 100%);
  opacity: 0.96;
}
.hub-card--soon {
  background: #f8fafc;
  opacity: 0.88;
  filter: grayscale(0.15);
}
.hub-hook {
  font-weight: 700;
  font-size: 1.02rem;
  margin: 6px 0;
  color: #0f172a;
}
.badge-tone-gold {
  background: #fef3c7 !important;
  color: #92400e !important;
}
.badge-tone-working, .badge-tone-accent {
  background: #d1fae5 !important;
  color: #065f46 !important;
}
.badge-tone-beta {
  background: #e0e7ff !important;
  color: #3730a3 !important;
}
.badge-tone-soon {
  background: #f1f5f9 !important;
  color: #64748b !important;
}
.badge-tone-default {
  background: #e2e8f0 !important;
  color: #334155 !important;
}
.achieve-list { padding-left: 0; list-style: none; }
.achieve-list li { margin: 6px 0; font-weight: 600; }
.health-q {
  border-bottom: 1px solid var(--nx-border);
  padding: 12px 0;
}
.chip-radio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--nx-border);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  background: #fff;
}
.chip-radio:has(input:checked),
.chip-radio.is-checked {
  background: #4f46e5;
  color: #fff;
  border-color: #4f46e5;
}
.chip-radio input { accent-color: #4f46e5; }