:root{--bg: #f4f6fb;--card: #ffffff;--ink: #1d2433;--muted: #6b7280;--primary: #4f46e5;--primary-dark: #4338ca;--border: #e5e7eb;--good: #059669;--good-bg: #d1fae5;--off: #9ca3af;--off-bg: #f3f4f6;--danger: #dc2626;--danger-bg: #fee2e2}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink)}.app{min-height:100vh}.topbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-top:calc(18px + env(safe-area-inset-top,0px));padding-bottom:14px;padding-left:calc(24px + env(safe-area-inset-left,0px));padding-right:calc(24px + env(safe-area-inset-right,0px));background:var(--card);border-bottom:1px solid var(--border)}.brand{font-weight:700;font-size:20px;color:var(--primary);text-decoration:none}.tagline{color:var(--muted);font-size:14px}.topbar .link-btn{margin-left:auto}.content{max-width:920px;margin:0 auto;padding:28px 24px 64px}.page-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}.page-head h1{margin:0;font-size:26px}.page-head .btn{margin-left:auto}h1{font-size:26px}h2{font-size:17px;margin:0 0 14px}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px;margin-bottom:18px}.auth-card{max-width:420px;margin:48px auto}.auth-card h1{margin-top:0}label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:14px}input,select{display:block;width:100%;margin-top:6px;padding:10px 12px;font-size:15px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--ink);font-weight:400}input:focus,select:focus{outline:2px solid var(--primary);border-color:transparent}.btn{border:none;border-radius:8px;padding:10px 16px;font-size:15px;font-weight:600;cursor:pointer}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-dark)}.btn:disabled{opacity:.6;cursor:default}.link-btn{background:none;border:none;color:var(--primary);cursor:pointer;font-size:14px;font-weight:600;padding:0}.link-btn:hover{text-decoration:underline}.review-tag{font-size:11px;font-weight:700;color:#92400e;background:#fef3c7;padding:1px 7px;border-radius:10px}.goal-row{display:flex;align-items:center;gap:10px;margin:8px 0;font-size:13px}.goal-bar{flex:1;height:8px;background:var(--off-bg);border-radius:5px;overflow:hidden}.goal-fill{height:100%;background:var(--good);border-radius:5px;transition:width .3s}.alert-badge{display:inline-block;min-width:18px;margin-left:6px;padding:1px 6px;border-radius:10px;background:var(--danger);color:#fff;font-size:12px;font-weight:700;text-align:center;line-height:16px}.admin-banner{display:block;background:var(--danger-bg);color:var(--danger);text-decoration:none;font-weight:600;font-size:14px;padding:10px 24px;border-bottom:1px solid var(--border)}.admin-banner:hover{text-decoration:underline}.muted{color:var(--muted);font-size:14px}.switch{margin-top:18px}.error{background:var(--danger-bg);color:var(--danger);padding:10px 12px;border-radius:8px;font-size:14px;margin:12px 0}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.child-card{display:flex;align-items:center;gap:14px;text-decoration:none;color:inherit;transition:border-color .15s}.child-card:hover{border-color:var(--primary)}.avatar{width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;flex-shrink:0}.child-name{font-weight:600;font-size:16px}.empty{text-align:center;padding:40px 20px}.inline-form{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end}.inline-form label{margin-bottom:0;flex:1;min-width:140px}.inline-form .btn{flex-shrink:0}.rule-form{margin-top:18px;border-top:1px solid var(--border);padding-top:18px}.back-link{color:var(--muted);text-decoration:none;font-size:14px;display:inline-block;margin-bottom:10px}.back-link:hover{color:var(--primary)}.badge{background:var(--off-bg);color:var(--muted);padding:4px 10px;border-radius:20px;font-size:13px;font-weight:600}.stat-row{display:flex;gap:28px;flex-wrap:wrap;margin-bottom:8px}.stat-value{font-size:24px;font-weight:700}.stat-label{font-size:13px;color:var(--muted)}.stat.highlight .stat-value{color:var(--primary)}table.rules{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}table.rules th{text-align:left;color:var(--muted);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--border);font-size:12px;text-transform:uppercase;letter-spacing:.03em}table.rules td{padding:10px;border-bottom:1px solid var(--border)}table.rules tr.inactive{opacity:.55}.pill{padding:3px 9px;border-radius:20px;font-size:12px;font-weight:600}.pill.on{background:var(--good-bg);color:var(--good)}.pill.off{background:var(--off-bg);color:var(--off)}.pill.subject{background:#e0f2fe;color:#0369a1;text-transform:capitalize}.tile-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px}.tile{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:20px 14px 16px;display:flex;flex-direction:column;align-items:center;gap:10px;cursor:pointer;text-align:center;transition:transform .12s ease,border-color .12s ease,box-shadow .12s ease}.tile:hover{border-color:var(--primary);transform:translateY(-3px);box-shadow:0 8px 20px #4f46e51f}.tile-icon{width:58px;height:58px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:30px}.tile-label{font-weight:600;font-size:15px;color:var(--ink)}.tile-badge{font-size:12px;color:var(--muted)}.panel-head{display:flex;align-items:center;gap:14px;margin-bottom:18px}.panel-head .link-btn{font-size:15px}details.cat{border-bottom:1px solid var(--border)}details.cat:last-of-type{border-bottom:none}details.cat>summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 4px;font-weight:600;font-size:15px}details.cat>summary::-webkit-details-marker{display:none}details.cat>summary:before{content:"▸";color:var(--muted);font-size:12px;transition:transform .12s ease;order:2;margin-left:auto}details.cat[open]>summary:before{transform:rotate(90deg)}.cat-body{padding:2px 4px 12px}.app-row{display:flex;align-items:center;gap:10px;padding:4px 0;margin-bottom:0;font-weight:400;color:var(--ink);font-size:14px}textarea:focus{outline:2px solid var(--primary);border-color:transparent}.period-toggle{display:inline-flex;gap:4px;background:var(--off-bg);padding:4px;border-radius:12px;margin-bottom:18px}.period-btn{border:none;background:none;padding:7px 14px;border-radius:9px;font-size:14px;font-weight:600;color:var(--muted);cursor:pointer}.period-btn.on{background:#fff;color:var(--primary);box-shadow:0 1px 3px #00000014}.leader-list{display:flex;flex-direction:column;gap:14px}.leader-card{display:block;text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s}.leader-card:hover{border-color:var(--primary);box-shadow:0 8px 20px #4f46e51a}.leader-top{display:flex;align-items:center;gap:12px}.rank{font-size:22px;width:28px;text-align:center;flex-shrink:0}.streak{font-size:14px;color:#ea580c;font-weight:700}.pct-pill{background:var(--good-bg);color:var(--good);font-weight:700;font-size:13px;padding:4px 10px;border-radius:20px;white-space:nowrap}.leader-stats{display:flex;gap:28px;margin:14px 0 4px}.metric-value{font-size:22px;font-weight:700}.metric-label{font-size:12px;color:var(--muted)}.arrow.up{color:var(--good);font-size:14px}.arrow.down{color:var(--danger);font-size:14px}.level-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}.level-chip{background:var(--off-bg);border-radius:10px;padding:8px 12px;min-width:150px;flex:1}.level-chip-head{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600}.diff-dots{margin-left:auto;color:var(--primary);letter-spacing:1px;font-size:10px}.level-bar{display:block;height:6px;background:var(--border);border-radius:4px;margin-top:7px;overflow:hidden}.level-bar-fill{display:block;height:100%;background:var(--primary);border-radius:4px}.weak-note{margin-top:12px;font-size:13px}.menu-item{display:block;width:100%;text-align:left;background:none;border:none;padding:10px 16px;font:inherit;font-size:14px;cursor:pointer;color:var(--ink)}.menu-item:hover{background:#f8fafc}.notice-ok{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;padding:10px 12px;border-radius:8px;font-size:14px;margin:0 0 16px}.pin-card{margin-top:22px}.pin-head{display:flex;align-items:center;gap:10px;width:100%;background:none;border:none;cursor:pointer;padding:0;font:inherit;color:var(--ink)}.pin-icon{font-size:20px}.pin-title{font-weight:700;font-size:16px}.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.table-wrap table.rules{margin-top:0}table.rules th,table.rules td{white-space:nowrap}.add-toggle{margin-top:16px;background:var(--off-bg);color:var(--primary)}.add-toggle:hover{background:#e8eaf6}.add-form{margin-top:16px;border-top:1px solid var(--border);padding-top:16px}.add-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.add-grid label{margin-bottom:0}.sub-head{font-size:14px;color:var(--muted);margin:18px 0 10px;text-transform:uppercase;letter-spacing:.03em}.attempt-list{display:flex;flex-direction:column;gap:8px}.attempt{border:1px solid var(--border);border-radius:10px;overflow:hidden}.attempt-head{display:flex;align-items:center;gap:12px;width:100%;background:none;border:none;cursor:pointer;padding:12px 14px;font:inherit;color:var(--ink);text-align:left}.attempt-head:hover{background:var(--off-bg)}.attempt-when{font-size:14px}.attempt-caret{margin-left:auto;font-size:13px;white-space:nowrap}.attempt-body{padding:4px 14px 14px;border-top:1px solid var(--border)}.qrev{padding:10px 0;border-bottom:1px solid var(--border)}.qrev:last-child{border-bottom:none}.qrev-prompt{font-weight:600;font-size:14px;margin-bottom:4px}.qrev-line{font-size:13px;margin-left:18px}.qrev-line.ok,.qrev .ok{color:var(--good)}.qrev-line.bad,.qrev .bad{color:var(--danger)}.qrev .ok,.qrev .bad{font-weight:700}