*{box-sizing:border-box}html,body{color:#111827;background:#f5f7fa;min-width:320px;min-height:100vh;margin:0;padding:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}#root{min-height:100vh}.app-shell{background:#f5f7fa;min-height:100vh}.app-header{background:#fff;border-bottom:1px solid #e5e7eb;justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex}.app-brand{align-items:center;gap:10px;display:flex}.app-brand-name{color:#111827;font-size:20px;font-weight:700}.app-brand-subtitle{color:#6b7280;border-left:1px solid #d1d5db;padding-left:10px;font-size:13px}.app-header-right{align-items:center;display:flex}.admin-user{color:#374151;font-size:14px}.app-body{min-height:calc(100vh - 64px);display:flex}.app-sidebar{background:#111827;flex-shrink:0;width:240px;padding:24px 16px}.sidebar-section-title{letter-spacing:.08em;color:#9ca3af;margin:18px 12px 8px;font-size:11px;font-weight:600}.sidebar-section-title:first-child{margin-top:0}.sidebar-link{color:#d1d5db;border-radius:6px;margin-bottom:4px;padding:10px 12px;font-size:14px;text-decoration:none;display:block}.sidebar-link:hover{color:#fff;background:#1f2937}.app-content{flex:1;min-width:0;padding:32px}.admin-page{background:#fff;border:1px solid #e5e7eb;border-radius:8px;padding:28px}.admin-page h1{color:#111827;margin:0 0 8px;font-size:24px}.admin-page p{color:#6b7280;margin:0;font-size:14px}