:root{--primary-color:#3b82f6;--primary-hover:#2563eb;--bg-color:#f3f4f6;--surface-color:#fff;--text-main:#1f2937;--text-muted:#6b7280;--border-color:#e5e7eb;--status-estimate:#8b5cf6;--status-production:#3b82f6;--status-proofreading:#f59e0b;--status-ordering:#ec4899;--status-delivery:#10b981;--status-completed:#64748b}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;font-family:Inter,Noto Sans JP,sans-serif}.app-container{height:100vh;display:flex;overflow:hidden}.sidebar{background-color:var(--surface-color);border-right:1px solid var(--border-color);flex-direction:column;width:250px;display:flex}.sidebar-header{border-bottom:1px solid var(--border-color);color:var(--primary-color);padding:1.5rem;font-size:1.25rem;font-weight:700}.sidebar-nav{flex:1;padding:1rem 0}.nav-item{color:var(--text-main);align-items:center;gap:.75rem;padding:.75rem 1.5rem;text-decoration:none;transition:background-color .2s;display:flex}.nav-item:hover,.nav-item.active{color:var(--primary-color);background-color:#f3f4f6}.main-content{flex-direction:column;flex:1;display:flex;overflow:hidden}.topbar{background-color:var(--surface-color);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;height:60px;padding:0 2rem;display:flex}.content-area{flex:1;padding:2rem;overflow-y:auto}.card{background-color:var(--surface-color);border-radius:.5rem;padding:1.5rem;box-shadow:0 1px 3px #0000001a}.btn{cursor:pointer;border:none;border-radius:.375rem;justify-content:center;align-items:center;gap:.5rem;padding:.5rem 1rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.page-title{color:var(--text-main);margin-bottom:1.5rem;font-size:1.5rem;font-weight:700}