/** Phase 7 - Performance / production hardening. Safe, low-risk UI layer. */
:root{
  --usg-phase7-radius:18px;
  --usg-phase7-shadow:0 14px 40px rgba(15,23,42,.08);
  --usg-phase7-border:rgba(15,23,42,.10);
}
.usg-theme *{box-sizing:border-box}
.usg-theme img{max-width:100%;height:auto}
.usg-theme .button,
.usg-theme button,
.usg-theme input[type="submit"],
.usg-theme .wc-forward{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.usg-theme .button:focus-visible,
.usg-theme button:focus-visible,
.usg-theme a:focus-visible,
.usg-theme input:focus-visible,
.usg-theme select:focus-visible,
.usg-theme textarea:focus-visible{outline:3px solid color-mix(in srgb,var(--usg-primary,#2563eb) 32%,transparent);outline-offset:3px;border-radius:10px}
.usg-production-qa table{max-width:960px;background:#fff}.usg-production-qa td:first-child{font-weight:700}.usg-production-qa tr.ok td:first-child{color:#047857}.usg-production-qa tr.warn td:first-child{color:#b45309}
.usg-phase7-toggle{position:fixed;z-index:99980;inset:auto auto 92px 18px;width:44px;height:44px;border-radius:999px;border:1px solid var(--usg-phase7-border);background:rgba(255,255,255,.9);box-shadow:var(--usg-phase7-shadow);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(14px);cursor:pointer;color:#0f172a}
.usg-phase7-toggle svg{width:21px;height:21px}.usg-phase7-toggle:active{transform:scale(.96)}
.usg-phase7-qa-badge{position:fixed;z-index:99979;inset:auto 14px 92px auto;border:1px solid rgba(22,163,74,.25);background:#ecfdf5;color:#047857;border-radius:999px;padding:8px 12px;font-size:12px;font-weight:800;box-shadow:0 10px 28px rgba(4,120,87,.13)}
.usg-theme .woocommerce-message,.usg-theme .woocommerce-info,.usg-theme .woocommerce-error{border-radius:16px;border:1px solid var(--usg-phase7-border);box-shadow:0 10px 30px rgba(15,23,42,.05)}
.usg-theme .usg-empty-state,.usg-theme .cart-empty{border-radius:var(--usg-phase7-radius);background:linear-gradient(180deg,#fff,#f8fafc);border:1px solid var(--usg-phase7-border);padding:24px;text-align:center}
[data-usg-theme="dark"] .usg-phase7-toggle{background:rgba(15,23,42,.88);color:#f8fafc;border-color:rgba(255,255,255,.12)}
[data-usg-theme="dark"] .usg-theme .usg-empty-state,[data-usg-theme="dark"] .usg-theme .cart-empty{background:linear-gradient(180deg,#111827,#0f172a);border-color:rgba(255,255,255,.10);color:#e5e7eb}
@media (max-width:768px){.usg-phase7-toggle{bottom:calc(86px + env(safe-area-inset-bottom));left:14px}.usg-phase7-qa-badge{bottom:calc(86px + env(safe-area-inset-bottom));right:12px}.usg-theme{padding-bottom:env(safe-area-inset-bottom)}}
@media (prefers-reduced-motion:reduce){.usg-phase7-toggle,.usg-theme *{transition:none!important;animation:none!important;scroll-behavior:auto!important}}