:root{--bg: #eef1f6;--surface: #ffffff;--surface-2: #f8f9fb;--ink: #1a2332;--ink-muted: #64748b;--ink-faint: #94a3b8;--brand: #1e3a5f;--brand-light: #e8eef5;--accent: #d97706;--accent-soft: #fef3c7;--ok: #059669;--ok-soft: #d1fae5;--warn: #dc2626;--warn-soft: #fee2e2;--border: #e2e8f0;--radius: 12px;--shadow: 0 4px 24px rgba(26, 35, 50, .08);--font: "DM Sans", "Noto Sans SC", system-ui, sans-serif;--sidebar-w: 220px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--ink);min-height:100vh}#root{min-height:100vh}button,input,select,textarea{font-family:inherit}button{cursor:pointer}.login-page{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;background:linear-gradient(160deg,var(--brand-light) 0%,var(--bg) 50%)}.login-page h1{font-size:28px;font-weight:700;color:var(--brand)}.login-page>p{color:var(--ink-muted);margin:8px 0 28px;font-size:14px}.login-page form{width:100%;max-width:360px}.login-error{color:var(--warn);font-size:13px;margin-bottom:12px;padding:10px 12px;background:var(--warn-soft);border-radius:8px}.admin-shell{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);background:var(--brand);color:#fff;padding:20px 0;flex-shrink:0;display:flex;flex-direction:column}.sidebar-logo{padding:0 20px 20px;font-weight:700;font-size:15px;border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:12px}.sidebar-logo small{display:block;font-size:11px;font-weight:400;opacity:.65;margin-top:4px}.nav-item{display:flex;align-items:center;gap:10px;padding:10px 20px;font-size:13px;font-weight:500;opacity:.75;color:#fff;text-decoration:none;border-left:3px solid transparent}.nav-item:hover{opacity:.95;background:#ffffff0f}.nav-item.active{opacity:1;background:#ffffff1f;border-left-color:var(--accent)}.nav-dot{width:8px;height:8px;border-radius:50%;background:currentColor;opacity:.5}.nav-item.active .nav-dot{opacity:1;background:var(--accent)}.sidebar-footer{margin-top:auto;padding:16px 20px;border-top:1px solid rgba(255,255,255,.12);font-size:12px;opacity:.8}.sidebar-footer button{margin-top:8px;width:100%;padding:8px;border-radius:8px;border:1px solid rgba(255,255,255,.25);background:transparent;color:#fff;font-size:12px}.main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{height:56px;border-bottom:1px solid var(--border);padding:0 24px;display:flex;align-items:center;justify-content:space-between;background:var(--surface-2)}.topbar h2{font-size:17px;font-weight:700}.topbar-user{font-size:13px;color:var(--ink-muted)}.topbar-actions{display:flex;gap:10px;align-items:center}.summary-table{width:100%;border-collapse:collapse;font-size:13px}.summary-table td{padding:12px;border-bottom:1px solid var(--border);vertical-align:middle}.summary-table tr:last-child td{border-bottom:none}.summary-table tr:hover td{background:var(--surface-2)}.summary-table tr{cursor:default}.summary-meta{color:var(--ink-muted)}.summary-tag{width:88px;text-align:right}.summary-actions{width:120px;text-align:right;white-space:nowrap}.row-action-btn{width:auto;padding:4px 8px;font-size:11px}.content{padding:24px;overflow-y:auto;flex:1}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:20px;overflow:hidden}.panel-head{padding:14px 18px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;background:var(--surface-2);gap:12px;flex-wrap:wrap}.panel-head h3{font-size:14px;font-weight:700}.panel-body{padding:16px 18px}.btn{display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;padding:8px 16px;border-radius:8px;border:none}.btn-brand{background:var(--brand);color:#fff}.btn-accent{background:var(--accent);color:#fff}.btn-outline{background:#fff;border:1px solid var(--border);color:var(--ink)}.btn-danger{background:var(--warn);color:#fff}.btn-sm{padding:6px 12px;font-size:12px}.btn:disabled{opacity:.5;cursor:not-allowed}.toolbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;align-items:center}.input{padding:9px 14px;border:1px solid var(--border);border-radius:8px;font-size:13px;min-width:140px}.input-grow{flex:1;min-width:180px}.form-field{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:13px;margin-bottom:12px}.form-label{display:block;font-size:12px;font-weight:600;color:var(--ink-muted);margin-bottom:6px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:640px){.form-grid{grid-template-columns:1fr}}.data-table{width:100%;border-collapse:collapse;font-size:13px}.data-table th{text-align:left;padding:10px 12px;font-size:11px;font-weight:600;color:var(--ink-muted);text-transform:uppercase;letter-spacing:.03em;border-bottom:1px solid var(--border);background:var(--surface-2)}.data-table td{padding:12px;border-bottom:1px solid var(--border);vertical-align:middle}.data-table tr:last-child td{border-bottom:none}.data-table tr:hover td{background:var(--surface-2)}.table-actions{display:flex;gap:8px;flex-wrap:wrap}.tag{display:inline-block;padding:3px 8px;border-radius:6px;font-size:11px;font-weight:600}.tag-ok{background:var(--ok-soft);color:var(--ok)}.tag-warn{background:var(--warn-soft);color:var(--warn)}.tag-muted{background:var(--surface-2);color:var(--ink-muted)}.tag-accent{background:var(--accent-soft);color:var(--accent)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}@media(max-width:900px){.stats-grid{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.stat-card .label{font-size:12px;color:var(--ink-muted)}.stat-card .value{font-size:26px;font-weight:700;margin-top:6px;color:var(--brand)}.empty-state{text-align:center;padding:48px 24px;color:var(--ink-muted);font-size:14px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1a233273;display:flex;align-items:center;justify-content:center;z-index:200;padding:20px}.modal{background:var(--surface);border-radius:var(--radius);width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow)}.modal-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.modal-head h3{font-size:16px;font-weight:700}.modal-close{border:none;background:transparent;font-size:20px;color:var(--ink-muted);line-height:1}.modal-body{padding:20px}.modal-foot{padding:16px 20px;border-top:1px solid var(--border);display:flex;gap:10px;justify-content:flex-end}.toast{position:fixed;top:20px;right:20px;z-index:300;padding:12px 18px;border-radius:8px;font-size:13px;font-weight:500;box-shadow:var(--shadow);max-width:360px}.toast.success{background:var(--ok-soft);color:var(--ok);border:1px solid #6ee7b7}.toast.error{background:var(--warn-soft);color:var(--warn);border:1px solid #fca5a5}.hint-box{font-size:12px;color:var(--ink-muted);background:var(--surface-2);border-radius:8px;padding:12px;line-height:1.6;margin-bottom:12px}.quota-preview{background:var(--brand-light);border-radius:var(--radius);padding:16px;border:1px dashed var(--brand);margin-top:16px}.quota-preview h4{font-size:13px;color:var(--brand);margin-bottom:8px}.quota-preview ul{font-size:13px;color:var(--ink-muted);padding-left:18px;line-height:1.8}.timeline-mini{font-size:12px;color:var(--ink-muted);line-height:1.7}.timeline-mini strong{color:var(--ink)}.chart-bar-row{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:13px}.chart-bar-row .name{width:80px;color:var(--ink-muted)}.chart-bar-row .bar-wrap{flex:1;height:8px;background:var(--border);border-radius:999px;overflow:hidden}.chart-bar-row .bar-fill{height:100%;background:var(--brand);border-radius:999px}.chart-bar-row .num{width:40px;text-align:right;font-weight:600}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:900px){.grid-2{grid-template-columns:1fr}}.alert{padding:12px 16px;border-radius:var(--radius);font-size:13px;margin-bottom:16px;border:1px solid #fcd34d;background:var(--accent-soft);color:#92400e}@media(max-width:768px){.admin-shell{flex-direction:column}.sidebar{width:100%;flex-direction:row;flex-wrap:wrap;padding:12px}.sidebar-logo{border:none;margin:0;padding:0 12px 0 0}.sidebar-footer{display:none}.nav-item{padding:8px 12px;border-left:none;border-radius:8px}}.weekday-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.chip{width:36px;height:36px;border-radius:50%;border:1.5px solid var(--border);background:var(--surface);font-size:13px;font-weight:600;color:var(--ink-muted)}.chip-active{background:var(--brand);border-color:var(--brand);color:#fff}