:root{--color-primary: #1565C0;--color-primary-light: #D1E4FF;--color-on-primary: #ffffff;--color-secondary: #5C5D20;--color-surface: #F8FDFF;--color-surface-variant: #DEE6EB;--color-on-surface: #001F25;--color-on-surface-variant: #41484C;--color-error: #BA1A1A;--color-error-container: #FFDAD6;--color-study: #4CAF50;--color-free-time: #FF9800;--color-sleep: #3F51B5;--color-lockdown: #F44336;--color-normal: #2196F3;--color-border: #C2CAD0;--radius: 8px;--shadow: 0 2px 4px rgba(0,0,0,.1);--shadow-soft: 0 18px 45px rgba(21, 101, 192, .14);--shadow-card: 0 12px 34px rgba(15, 23, 42, .1);--gradient-app: radial-gradient(circle at top left, rgba(209, 228, 255, .95), transparent 34%), linear-gradient(135deg, #F8FDFF 0%, #EEF7FF 52%, #FFF8EF 100%);--gradient-primary: linear-gradient(135deg, #1565C0 0%, #35A7FF 100%);--gradient-violet: linear-gradient(135deg, #5B4BDB 0%, #9B7CFF 100%);--gradient-orange: linear-gradient(135deg, #FF8A00 0%, #FFB74D 100%);--sidebar-width: 240px}[data-theme=dark]{--color-primary: #A0C9FF;--color-primary-light: #00497D;--color-surface: #001F25;--color-surface-variant: #41484C;--color-on-surface: #D6F2FF;--color-on-surface-variant: #C2CAD0;--color-border: #41484C;--brand-card-bg: rgba(160, 201, 255, .12);--brand-card-text: #EAF7FF;--brand-card-muted: #B8D8EA;--shadow-soft: 0 18px 45px rgba(0, 0, 0, .35);--shadow-card: 0 12px 34px rgba(0, 0, 0, .28);--gradient-app: radial-gradient(circle at top left, rgba(0, 73, 125, .95), transparent 34%), linear-gradient(135deg, #001F25 0%, #092A36 52%, #1C1A2D 100%)}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--gradient-app);color:var(--color-on-surface);line-height:1.5;-webkit-font-smoothing:antialiased}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:18px;padding:16px;box-shadow:var(--shadow-card);overflow:hidden}.elevated-card{border:1px solid color-mix(in srgb,var(--color-border),transparent 25%);box-shadow:var(--shadow-soft)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;transition:opacity .15s,background .15s;white-space:nowrap}.btn:hover{opacity:.85}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:var(--color-on-primary)}.btn-danger{background:var(--color-error);color:#fff}.btn-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-on-surface)}.btn-sm{padding:5px 10px;font-size:11px}.mode-badge{display:inline-block;padding:2px 10px;border-radius:12px;font-size:12px;font-weight:600}.mode-study{background:#e8f5e9;color:#2e7d32}.mode-free-time{background:#fff3e0;color:#e65100}.mode-sleep{background:#e8eaf6;color:#283593}.mode-lockdown{background:#ffebee;color:#c62828}.mode-normal{background:#e3f2fd;color:#1565c0}.mode-offline-lockdown{background:#ffebee;color:#c62828}.layout{display:grid;grid-template-columns:var(--sidebar-width) 1fr;height:100vh}.sidebar{background:linear-gradient(180deg,color-mix(in srgb,var(--color-primary-light),white 22%),var(--color-surface));padding:20px;border-right:1px solid var(--color-border);display:flex;flex-direction:column;overflow-y:auto}.brand-card{display:flex;align-items:center;gap:10px;padding:12px;margin-bottom:18px;border-radius:18px;background:var(--brand-card-bg, rgba(255,255,255,.55));box-shadow:var(--shadow-card)}.brand-logo{width:40px;height:40px;border-radius:14px;display:grid;place-items:center;color:#fff;font-weight:800;background:var(--gradient-primary)}.brand-card h2{color:var(--brand-card-text, var(--color-primary));margin-bottom:0;font-size:20px}.brand-card span{color:var(--brand-card-muted, var(--color-on-surface-variant));font-size:11px}.sidebar nav a{display:block;padding:10px 12px;color:var(--color-on-surface);text-decoration:none;border-radius:var(--radius);font-size:14px;margin-bottom:4px;transition:background .15s}.sidebar nav a:hover,.sidebar nav a.active{background:var(--gradient-primary);color:var(--color-on-primary);box-shadow:0 10px 22px #1565c038}.sidebar-family{margin-top:18px;padding-top:14px;border-top:1px solid var(--color-border)}.sidebar-label{margin-bottom:10px;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--color-on-surface-variant)}.sidebar-child-block{margin-bottom:14px}.sidebar-child-title{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:13px;font-weight:700}.child-avatar{width:28px;height:28px;display:inline-grid;place-items:center;border-radius:50%;background:var(--gradient-violet);color:#fff;font-size:12px;font-weight:800;box-shadow:0 10px 20px #5b4bdb3d}.child-avatar.inline{margin-right:8px;vertical-align:middle}.sidebar-empty-device{padding-left:36px;color:var(--color-on-surface-variant);font-size:12px}.sidebar-device{width:100%;display:grid;grid-template-columns:auto 1fr auto;gap:8px;align-items:center;margin-bottom:6px;padding:8px 10px;border:1px solid transparent;border-radius:14px;background:#ffffff73;color:var(--color-on-surface);cursor:pointer;text-align:left}.sidebar-device.active{border-color:color-mix(in srgb,var(--color-primary),transparent 35%);background:color-mix(in srgb,var(--color-primary-light),white 48%);box-shadow:var(--shadow-card)}.sidebar-device-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:650}.sidebar-device-meta{color:var(--color-on-surface-variant);font-size:10px}.sidebar-device-row{display:flex;align-items:center;gap:4px;margin-bottom:6px}.sidebar-device-row .sidebar-device{margin-bottom:0;flex:1;min-width:0}.sidebar-sync-btn{background:none;border:1px solid var(--color-border);border-radius:8px;padding:4px 6px;cursor:pointer;font-size:13px;line-height:1;flex-shrink:0;color:var(--color-on-surface-variant);transition:background .2s,opacity .2s}.sidebar-sync-btn:hover:not(:disabled){background:var(--color-surface-variant)}.sidebar-sync-btn:disabled{opacity:.5;cursor:not-allowed}.device-name-removable{font-weight:700;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:opacity .15s,color .15s}.device-name-removable:hover{opacity:.7;color:#c62828}.main-content{padding:20px 24px;overflow-y:auto;-webkit-overflow-scrolling:touch}.dashboard-shell,.stats-shell{width:min(100%,1040px);margin:0 auto}.dashboard-hero,.stats-hero{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px;border-radius:24px;background:linear-gradient(135deg,color-mix(in srgb,var(--color-primary-light),white 35%),color-mix(in srgb,var(--color-surface),white 10%));box-shadow:var(--shadow-soft)}.dashboard-hero p,.stats-hero p{margin-top:4px;color:var(--color-on-surface-variant);font-size:13px}.eyebrow{margin-bottom:4px;color:var(--color-primary);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.child-card,.device-card{background:color-mix(in srgb,var(--color-surface),white 12%)}.device-card{border:1px solid color-mix(in srgb,var(--color-border),transparent 16%);border-radius:20px;padding:14px;margin-top:10px;box-shadow:var(--shadow-card)}.stats-summary-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:20px}.stats-metric-card{min-width:0;padding:14px 12px;border-radius:18px;color:#fff;box-shadow:var(--shadow-card);overflow:hidden}.stats-metric-card.primary{background:var(--gradient-primary)}.stats-metric-card.violet{background:var(--gradient-violet)}.stats-metric-card.orange{background:var(--gradient-orange)}.metric-label{margin-bottom:4px;font-size:11px;opacity:.86;white-space:nowrap}.metric-value{font-size:22px;font-weight:800;line-height:1.1}.metric-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:800}.metric-subvalue{margin-top:2px;font-size:13px;font-weight:700;opacity:.92}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.flex-between{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}.mb-16{margin-bottom:16px}.mb-8{margin-bottom:8px}.mb-24{margin-bottom:24px}.mt-16{margin-top:16px}.online-dot{width:10px;height:10px;border-radius:50%;display:inline-block}.online-dot.online{background:var(--color-study)}.online-dot.offline{background:var(--color-error)}input,select,textarea{padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius);font-size:14px;background:var(--color-surface);color:var(--color-on-surface);max-width:100%;box-sizing:border-box}input:focus,select:focus{outline:2px solid var(--color-primary);outline-offset:-1px}.app-list{list-style:none}.app-list li{display:flex;align-items:center;justify-content:space-between;padding:12px;border-bottom:1px solid var(--color-border)}.tabs{display:flex;gap:0;border-bottom:2px solid var(--color-border);margin-bottom:16px;overflow-x:auto;-webkit-overflow-scrolling:touch}.tabs button{padding:8px 16px;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:14px;color:var(--color-on-surface-variant);margin-bottom:-2px;white-space:nowrap}.tabs button.active{border-bottom-color:var(--color-primary);color:var(--color-primary);font-weight:600}.event-item{padding:8px 0;border-bottom:1px solid var(--color-border);font-size:13px}.event-type{font-weight:600;color:var(--color-primary)}.hamburger{display:none;position:fixed;top:12px;left:12px;z-index:1001;background:var(--color-surface);color:var(--color-on-surface);border:1px solid var(--color-border);border-radius:8px;width:40px;height:40px;font-size:18px;cursor:pointer;align-items:center;justify-content:center;transition:opacity .15s,background .15s}.hamburger.hidden{opacity:0;pointer-events:none}.hamburger:hover{background:var(--color-surface-variant)}.hamburger:active{transform:scale(.95)}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:999;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}@media(max-width:768px){.hamburger{display:flex}.layout{grid-template-columns:1fr}.sidebar{position:fixed;left:-260px;top:0;bottom:0;width:var(--sidebar-width);z-index:1000;transition:left .25s ease;box-shadow:none}.sidebar.open{left:0;box-shadow:4px 0 16px #00000026}.sidebar-overlay.open{display:block}.main-content{padding:60px 12px 16px}.dashboard-hero,.stats-hero{align-items:stretch;flex-direction:column;padding:16px;border-radius:22px}.dashboard-hero>div:last-child{justify-content:stretch}.dashboard-hero .btn{flex:1}.stats-summary-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.stats-metric-card{padding:10px 8px;border-radius:16px}.metric-label{font-size:9px}.metric-value{font-size:16px}.metric-title,.metric-subvalue{font-size:11px}.grid-2,.grid-3{grid-template-columns:1fr}.card{padding:12px}.btn-sm{padding:5px 10px;font-size:11px}}@media(max-width:480px){.main-content{padding:56px 8px 12px}.card{padding:10px;border-radius:12px}h2{font-size:18px}h3{font-size:16px}h4{font-size:14px}.stats-summary-row{gap:5px}.stats-metric-card{min-height:76px;padding:9px 6px}.metric-label{font-size:8px}.metric-value{font-size:15px}}@media(min-width:769px)and (max-width:1024px){.layout{grid-template-columns:200px 1fr}.main-content{padding:20px}}