:root{--primary: #1a73e8;--primary-dark: #1558b0;--success: #34a853;--warning: #fbbc04;--danger: #ea4335;--bg: #f0f2f5;--surface: #ffffff;--border: #e0e0e0;--text: #202124;--text-muted: #5f6368;--sidebar-bg: #1e293b;--sidebar-text: #cbd5e1;--sidebar-active-bg: #1a73e8;--sidebar-active-text: #ffffff;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;flex-shrink:0;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-logo{padding:24px 20px 16px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-logo h1{font-size:22px;font-weight:700;color:#fff;letter-spacing:-.5px}.sidebar-logo span{font-size:11px;color:var(--sidebar-text);opacity:.6;display:block;margin-top:2px}.sidebar-nav{flex:1;padding:12px 8px;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:6px;cursor:pointer;color:var(--sidebar-text);font-size:14px;font-weight:500;transition:background .15s;margin-bottom:2px}.nav-item:hover{background:#ffffff0f;text-decoration:none}.nav-item.active{background:var(--sidebar-active-bg);color:var(--sidebar-active-text)}.nav-icon{width:18px;height:18px;opacity:.8}.sidebar-footer{padding:16px;border-top:1px solid rgba(255,255,255,.08)}.sidebar-user{font-size:12px;color:var(--sidebar-text);opacity:.7;margin-bottom:8px}.sidebar-user strong{display:block;font-size:13px;opacity:1;color:#fff}.main-content{flex:1;margin-left:240px;display:flex;flex-direction:column;min-height:100vh}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:50}.topbar-title{font-size:16px;font-weight:600}.page-content{padding:24px;flex:1}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{font-size:15px;font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:24px}.stat-card{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.stat-card .label{font-size:12px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.stat-card .value{font-size:28px;font-weight:700;margin-top:6px}.stat-card .sub{font-size:12px;color:var(--text-muted);margin-top:4px}.stat-card.primary .value{color:var(--primary)}.stat-card.success .value{color:var(--success)}.stat-card.warning .value{color:var(--warning)}.stat-card.danger .value{color:var(--danger)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:6px;border:none;font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;text-decoration:none}.btn:hover{text-decoration:none;opacity:.9}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-success{background:var(--success);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.btn-ghost:hover{background:var(--bg)}.btn-sm{padding:5px 10px;font-size:12px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;padding:10px 14px;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.4px;color:var(--text-muted);border-bottom:2px solid var(--border)}td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:middle}tr:last-child td{border-bottom:none}tr:hover td{background:#f8f9fa}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.3px}.badge-green{background:#d4edda;color:#155724}.badge-red{background:#f8d7da;color:#721c24}.badge-yellow{background:#fff3cd;color:#856404}.badge-blue{background:#cce5ff;color:#004085}.badge-gray{background:#e2e8f0;color:#475569}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text)}.form-label .required{color:var(--danger);margin-left:2px}.form-control{display:block;width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;background:var(--surface);color:var(--text);transition:border-color .15s;font-family:inherit}.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1a73e81f}.form-control::placeholder{color:#9aa0a6}select.form-control{cursor:pointer}textarea.form-control{resize:vertical;min-height:80px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.form-grid .form-group.full{grid-column:1 / -1}.form-error{color:var(--danger);font-size:12px;margin-top:4px}.form-hint{color:var(--text-muted);font-size:12px;margin-top:4px}.section-title{font-size:18px;font-weight:700;margin-bottom:16px}.section-divider{font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin:24px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--border)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-box{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:40px;width:100%;max-width:400px}.login-logo{text-align:center;margin-bottom:28px}.login-logo h1{font-size:28px;font-weight:700;color:var(--primary)}.login-logo p{font-size:13px;color:var(--text-muted);margin-top:4px}.login-title{font-size:18px;font-weight:600;margin-bottom:20px}.alert{padding:12px 16px;border-radius:6px;font-size:13px;margin-bottom:16px}.alert-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.alert-success{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.alert-info{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe}.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}.empty-state h3{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--text)}.empty-state 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.dd{font-weight:500;text-align:right}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:var(--surface);border-radius:var(--radius);padding:28px;width:100%;max-width:520px;box-shadow:var(--shadow-md)}.modal-title{font-size:16px;font-weight:600;margin-bottom:20px}.tabs{display:flex;border-bottom:2px solid var(--border);margin-bottom:20px;gap:4px}.tab-btn{padding:8px 16px;border:none;background:none;font-size:14px;font-weight:500;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .15s}.tab-btn:hover{color:var(--text)}.tab-btn.active{color:var(--primary);border-bottom-color:var(--primary)}.pagination{display:flex;justify-content:center;gap:4px;margin-top:16px}.page-btn{padding:6px 12px;border:1px solid var(--border);border-radius:4px;background:var(--surface);cursor:pointer;font-size:13px}.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.search-row{display:flex;gap:8px;margin-bottom:16px;align-items:center}.search-row .form-control{max-width:280px}@media (max-width: 768px){.sidebar{transform:translate(-100%)}.main-content{margin-left:0}.form-grid,.detail-grid{grid-template-columns:1fr}}