/**
 * Quantum UI — shared modern design tokens for all Dusha contours.
 * Import after kubit-brand.css on legacy HTML pages.
 */
:root {
  --qx-bg: #0a0f1a;
  --qx-bg-elevated: #111827;
  --qx-bg-card: rgba(17, 24, 39, 0.85);
  --qx-border: rgba(0, 212, 255, 0.18);
  --qx-border-strong: rgba(185, 103, 255, 0.35);
  --qx-cyan: #00d4ff;
  --qx-violet: #b967ff;
  --qx-text: #e8edf5;
  --qx-text-muted: #94a3b8;
  --qx-success: #34d399;
  --qx-warning: #fbbf24;
  --qx-danger: #f87171;
  --qx-radius: 14px;
  --qx-radius-sm: 8px;
  --qx-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --qx-glow: 0 0 24px rgba(0, 212, 255, 0.12);
  --qx-font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --qx-transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; }

body.qx-theme {
  margin: 0;
  min-height: 100vh;
  font-family: var(--qx-font);
  background: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(0, 212, 255, 0.08), transparent),
    radial-gradient(ellipse 80% 60% at 100% 50%, rgba(185, 103, 255, 0.06), transparent),
    var(--qx-bg);
  color: var(--qx-text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.qx-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 48px;
}

.qx-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--qx-border);
}

.qx-logo {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--qx-cyan), var(--qx-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.qx-card {
  background: var(--qx-bg-card);
  border: 1px solid var(--qx-border);
  border-radius: var(--qx-radius);
  padding: 20px 22px;
  box-shadow: var(--qx-shadow);
  backdrop-filter: blur(12px);
  transition: border-color var(--qx-transition), box-shadow var(--qx-transition);
}

.qx-card:hover {
  border-color: var(--qx-border-strong);
  box-shadow: var(--qx-shadow), var(--qx-glow);
}

.qx-grid {
  display: grid;
  gap: 16px;
}

.qx-grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.qx-grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.qx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--qx-radius-sm);
  border: 1px solid var(--qx-border-strong);
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.15), rgba(185, 103, 255, 0.12));
  color: var(--qx-text);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--qx-transition), box-shadow var(--qx-transition);
}

.qx-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--qx-glow);
}

.qx-btn-primary {
  background: linear-gradient(135deg, var(--qx-cyan), var(--qx-violet));
  border: none;
  color: #0a0f1a;
}

.qx-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0, 212, 255, 0.12);
  color: var(--qx-cyan);
  border: 1px solid var(--qx-border);
}

.qx-muted { color: var(--qx-text-muted); font-size: 0.9rem; }

.qx-input, .qx-select, .qx-textarea {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--qx-radius-sm);
  border: 1px solid var(--qx-border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--qx-text);
  font: inherit;
}

.qx-input:focus, .qx-select:focus, .qx-textarea:focus {
  outline: none;
  border-color: var(--qx-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

.qx-status-ok { color: var(--qx-success); }
.qx-status-warn { color: var(--qx-warning); }
.qx-status-err { color: var(--qx-danger); }

@media (max-width: 640px) {
  .qx-shell { padding: 16px 14px 32px; }
  .qx-header { flex-direction: column; align-items: flex-start; }
}