:root{--bg: #f4f6f9;--surface: #ffffff;--border: #e4e8ef;--text: #1a2230;--muted: #6b7686;--primary: #1565c0;--primary-dark: #0d47a1;--green: #2e7d32;--orange: #e08600;--red: #c62828;--radius: 12px;--shadow: 0 1px 2px rgba(16, 24, 40, .04);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}a{color:inherit;text-decoration:none}.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{padding:22px 20px 16px;font-size:18px;font-weight:700;letter-spacing:-.2px}.brand span{color:var(--primary)}.brand small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.3px;text-transform:uppercase;margin-top:2px}.nav{display:flex;flex-direction:column;padding:8px;gap:2px}.nav a{padding:10px 14px;border-radius:8px;color:var(--muted);font-weight:500;display:flex;align-items:center;gap:10px}.nav a:hover{background:#f0f3f8;color:var(--text)}.nav a.active{background:#e8f0fb;color:var(--primary-dark);font-weight:600}.nav-icon{width:18px;text-align:center}.sidebar-foot{margin-top:auto;padding:16px 20px;font-size:11px;color:var(--muted);border-top:1px solid var(--border)}.main{flex:1;min-width:0}.topbar{background:var(--surface);border-bottom:1px solid var(--border);padding:18px 28px;display:flex;align-items:center;justify-content:space-between}.topbar h1{margin:0;font-size:20px}.topbar p{margin:2px 0 0;color:var(--muted);font-size:13px}.content{padding:24px 28px 48px}.grid{display:grid;gap:16px}.grid.cols-4{grid-template-columns:repeat(4,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}.grid.cols-3{grid-template-columns:repeat(3,1fr)}@media (max-width: 900px){.grid.cols-4,.grid.cols-3{grid-template-columns:repeat(2,1fr)}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.stat{padding:18px 20px}.stat .label{color:var(--muted);font-size:13px;font-weight:500}.stat .value{font-size:30px;font-weight:700;margin-top:6px;line-height:1.1}.stat .sub{color:var(--muted);font-size:12px;margin-top:4px}.stat.accent-blue .value{color:var(--primary)}.stat.accent-green .value{color:var(--green)}.stat.accent-orange .value{color:var(--orange)}.stat.accent-red .value{color:var(--red)}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.panel-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-head h2{margin:0;font-size:16px}table{width:100%;border-collapse:collapse}th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);font-weight:600;padding:12px 20px;border-bottom:1px solid var(--border);background:#fafbfd}td{padding:13px 20px;border-bottom:1px solid var(--border);vertical-align:middle}tr:last-child td{border-bottom:none}tbody tr:hover{background:#fafbfd}.row-strong{font-weight:600}.badge{display:inline-block;padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600}.badge.green{background:#e6f4ea;color:var(--green)}.badge.red{background:#fdecea;color:var(--red)}.badge.orange{background:#fdf0e1;color:var(--orange)}.badge.blue{background:#e8f0fb;color:var(--primary-dark)}.badge.gray{background:#eef1f5;color:var(--muted)}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff;transition:background .12s ease}.btn:hover{background:var(--primary-dark)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.ghost{background:transparent;color:var(--primary);border-color:var(--border)}.btn.ghost:hover{background:#f0f3f8}.btn.small{padding:6px 12px;font-size:13px}.field{margin-bottom:18px}.field label{display:block;font-weight:600;margin-bottom:6px;font-size:13px}.field input[type=text],.field input[type=password],.field input[type=email],.field textarea,select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff;color:var(--text)}.field input[type=password]:focus,.field input[type=email]:focus,.field input:focus,.field textarea:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #1565c01f}select{width:auto;min-width:180px}.check{display:flex;align-items:center;gap:9px;font-weight:500;cursor:pointer}.check input{width:16px;height:16px}.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.toolbar .spacer{flex:1}.muted{color:var(--muted)}.center-state{padding:56px 20px;text-align:center;color:var(--muted)}.error-box{background:#fdecea;border:1px solid #f7c4bf;color:var(--red);padding:12px 16px;border-radius:8px;margin-bottom:18px;font-size:13px}.form-narrow{max-width:560px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#10182873;display:grid;place-items:center;padding:20px;z-index:50}.modal{width:100%;max-width:520px;max-height:88vh;overflow:auto;background:var(--surface)}.assign-list{border:1px solid var(--border);border-radius:8px;max-height:240px;overflow:auto}.assign-row{display:flex;align-items:center;gap:10px;padding:9px 12px;border-bottom:1px solid var(--border);cursor:pointer}.assign-row:last-child{border-bottom:none}.assign-row:hover{background:#fafbfd}.assign-row input{width:16px;height:16px}.assign-row span:nth-of-type(1){flex:1}.login-wrap{min-height:100vh;display:grid;place-items:center;background:var(--bg);padding:20px}.login-card{width:100%;max-width:380px;padding:28px 28px 30px}.sidebar-foot .user-email{font-weight:600;color:var(--text);font-size:12px;margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-foot .signout{width:100%;justify-content:center}.spinner{width:26px;height:26px;border:3px solid #d8deea;border-top-color:var(--primary);border-radius:50%;margin:0 auto 12px;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}