:root{--bg: #0f172a;--bg-panel: #1e293b;--bg-card: #273449;--text: #e2e8f0;--text-muted: #94a3b8;--accent: #38bdf8;--accent-strong: #0ea5e9;--success: #34d399;--danger: #f87171;--border: #334155}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top,#1e293b,#0f172a 60%);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif;min-height:100vh}.page{display:flex;flex-direction:column;min-height:100vh}.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border);background:#0f172ae6;position:sticky;top:0;z-index:10}.brand{font-size:1.2rem;font-weight:700;color:var(--text);text-decoration:none;background:linear-gradient(90deg,var(--accent),#a78bfa);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.brand-sub{font-weight:400;opacity:.8}.nav-links{display:flex;gap:20px;align-items:center}.nav-link{color:var(--text-muted);text-decoration:none;font-size:.9rem;position:relative}.nav-link.active{color:var(--text)}.cart-badge{margin-left:6px;background:var(--accent);color:#082f49;font-size:.7rem;font-weight:700;border-radius:999px;padding:1px 7px}.content{flex:1;max-width:1080px;width:100%;margin:0 auto;padding:24px 20px 48px}.toolbar{margin-bottom:16px}.search-input{width:100%;max-width:420px;background:var(--bg-panel);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text);font-size:.95rem}.search-input:focus{outline:2px solid var(--accent)}.category-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.chip{background:var(--bg-panel);border:1px solid var(--border);color:var(--text-muted);border-radius:999px;padding:6px 14px;font-size:.82rem;font-weight:500;cursor:pointer}.chip-active{background:linear-gradient(135deg,var(--accent),var(--accent-strong));color:#082f49;border-color:transparent}.chip-count{opacity:.7;font-size:.75rem}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:8px;position:relative}.product-image{width:100%;height:110px;object-fit:contain;background:#fff;border-radius:8px}.category-tag{align-self:flex-start;font-size:.68rem;text-transform:uppercase;letter-spacing:.04em;color:var(--accent);font-weight:600}.brand{margin:-4px 0 0;font-size:.75rem;color:var(--text-muted)}.product-card h3{margin:0;font-size:.95rem;line-height:1.3}.price{margin:0;color:var(--accent);font-weight:600}button{background:linear-gradient(135deg,var(--accent),var(--accent-strong));color:#082f49;border:none;border-radius:8px;padding:10px 14px;font-weight:600;cursor:pointer;font-size:.9rem;transition:opacity .15s ease,transform .15s ease}button:hover:not(:disabled){transform:translateY(-1px)}button:disabled{opacity:.6;cursor:progress}button.button-secondary{background:var(--bg-panel);color:var(--text);border:1px solid var(--border)}.button-link{display:inline-block;background:linear-gradient(135deg,var(--accent),var(--accent-strong));color:#082f49;border-radius:8px;padding:10px 16px;font-weight:600;text-decoration:none;margin-top:12px}.button-link.button-secondary{background:var(--bg-panel);color:var(--text);border:1px solid var(--border)}.cart-page h1,.checkout-page h1{margin-top:0}.cart-lines{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:10px}.cart-line{display:grid;grid-template-columns:56px 1fr auto auto auto;align-items:center;gap:14px;background:var(--bg-panel);border:1px solid var(--border);border-radius:10px;padding:10px 14px}.cart-line-image{width:48px;height:48px;object-fit:contain;background:#fff;border-radius:6px}.cart-line-info{display:flex;flex-direction:column;gap:2px;min-width:0}.cart-line-name{font-weight:600;font-size:.9rem}.cart-line-price{font-size:.78rem;color:var(--text-muted)}.cart-line-controls{display:flex;align-items:center;gap:8px}.qty-button{width:28px;height:28px;padding:0;display:flex;align-items:center;justify-content:center;border-radius:6px}.qty-value{min-width:20px;text-align:center;font-weight:600}.cart-line-total{font-weight:600;color:var(--accent);white-space:nowrap}.remove-button{background:transparent;color:var(--text-muted);border:1px solid var(--border);font-size:.78rem;padding:6px 10px}.cart-summary{display:flex;justify-content:space-between;align-items:baseline;font-size:1.1rem;border-top:1px solid var(--border);padding-top:16px;margin-bottom:20px}.cart-actions{display:flex;gap:12px;flex-wrap:wrap}.checkout-lines{list-style:none;margin:0 0 20px;padding:0;display:flex;flex-direction:column;gap:8px}.checkout-lines li{display:flex;justify-content:space-between;background:var(--bg-panel);border:1px solid var(--border);border-radius:8px;padding:10px 14px;font-size:.9rem}.confirmation{background:var(--bg-panel);border:1px solid var(--border);border-radius:16px;padding:32px}.confirmation h1{margin-top:0;color:var(--success)}.confirmation code{background:var(--bg-card);padding:2px 6px;border-radius:4px;font-family:Cascadia Code,monospace;font-size:.82rem;word-break:break-all}.devtools{border-top:1px solid var(--border);background:var(--bg-panel);font-size:.85rem}.devtools-toggle{width:100%;background:transparent;color:var(--text-muted);border:none;border-radius:0;display:flex;align-items:center;gap:8px;padding:10px 24px;font-weight:500;justify-content:center}.devtools-toggle:hover{transform:none;color:var(--text)}.devtools-body{display:flex;align-items:center;justify-content:center;gap:24px;padding:0 24px 16px;flex-wrap:wrap}.devtools-loadtest{display:flex;align-items:center;gap:10px}.health-dot{width:8px;height:8px;border-radius:50%;background:var(--text-muted);display:inline-block}.health-up{background:var(--success);box-shadow:0 0 8px var(--success)}.health-down{background:var(--danger);box-shadow:0 0 8px var(--danger)}.muted{color:var(--text-muted)}.error{color:var(--danger)}.hint{font-size:.8rem;color:var(--text-muted);line-height:1.5}.result{font-family:Cascadia Code,monospace;color:var(--success);font-size:.85rem}