@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap");*{margin:0;padding:0;box-sizing:border-box}:root{--bg:#f5f7fa;--white:#ffffff;--primary:#2563eb;--primary-dark:#1d4ed8;--primary-light:#eff6ff;--danger:#dc2626;--success:#16a34a;--text:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--shadow:0 1px 3px rgba(0,0,0,0.08),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 6px rgba(0,0,0,0.07),0 2px 4px rgba(0,0,0,0.05);--radius:10px}body{font-family:Noto Sans JP,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}nav{background:var(--white);border-bottom:1px solid var(--border);padding:0 24px;display:flex;align-items:center;gap:8px;height:56px;box-shadow:var(--shadow);position:-webkit-sticky;position:sticky;top:0;z-index:100}nav .logo{font-weight:700;font-size:16px;color:var(--primary);margin-right:16px}nav a{text-decoration:none;color:var(--text-muted);font-size:14px;font-weight:500;padding:6px 12px;border-radius:6px;transition:all .15s}nav a.active,nav a:hover{background:var(--primary-light);color:var(--primary)}main{max-width:900px;margin:0 auto;padding:32px 16px}h1{font-size:22px;margin-bottom:24px}h1,h2{font-weight:700;color:var(--text)}h2{font-size:16px;margin-bottom:16px}.card{background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:20px}label{display:block;font-size:13px;font-weight:500;color:var(--text-muted);margin-bottom:6px}input,select{width:100%;padding:10px 12px;border:1.5px solid var(--border);border-radius:8px;font-size:15px;font-family:inherit;color:var(--text);background:var(--white);outline:none;transition:border-color .15s}input:focus,select:focus{border-color:var(--primary)}.form-group{margin-bottom:16px}button{font-family:inherit;cursor:pointer;border:none;border-radius:8px;font-weight:500;font-size:14px;transition:all .15s}.btn-primary{background:var(--primary);color:white;padding:10px 20px}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--bg);color:var(--text);padding:10px 20px;border:1.5px solid var(--border)}.btn-secondary:hover{background:var(--border)}.btn-danger{background:#fee2e2;color:var(--danger);padding:6px 12px;font-size:13px}.btn-danger:hover{background:#fecaca}.btn-success{background:#dcfce7;color:var(--success);padding:10px 20px}.btn-success:hover{background:#bbf7d0}table{width:100%;border-collapse:collapse;font-size:14px}th{background:var(--bg);padding:10px 12px;text-align:left;font-weight:600;font-size:13px;color:var(--text-muted);border-bottom:2px solid var(--border)}td{padding:12px;border-bottom:1px solid var(--border);color:var(--text)}.tag,tr:hover td{background:var(--primary-light)}.tag{display:inline-block;color:var(--primary);border-radius:100px;padding:2px 10px;font-size:12px;font-weight:500}.grid-2{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}@media (max-width:600px){.grid-2{grid-template-columns:1fr}nav{gap:4px}nav a{padding:6px 8px;font-size:13px}}.msg-success{background:#dcfce7;color:var(--success)}.msg-error,.msg-success{border-radius:8px;padding:12px 16px;font-size:14px;margin-bottom:16px}.msg-error{background:#fee2e2;color:var(--danger)}.product-row{display:grid;grid-template-columns:1fr 100px 40px;grid-gap:8px;gap:8px;align-items:center;margin-bottom:8px}.empty{text-align:center;color:var(--text-muted);padding:40px;font-size:14px}