:root{--bg: #f6f8ff;--surface: #ffffff;--surface2: #f1f4fb;--surface3: #e8ecf8;--sidebar-bg: #0c0f18;--sidebar-w: 228px;--primary: #5b6ef5;--primary-lt: #eef0fe;--primary-dk: #3d50d8;--teal: #06b6d4;--teal-lt: #ecfeff;--green: #10b981;--green-lt: #d1fae5;--amber: #f59e0b;--amber-lt: #fef3c7;--red: #ef4444;--red-lt: #fee2e2;--purple: #8b5cf6;--purple-lt: #ede9fe;--text: #0f172a;--text-2: #475569;--text-3: #94a3b8;--border: #e2e8f0;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(15,23,42,.06), 0 4px 16px rgba(15,23,42,.04);--shadow-lg: 0 12px 40px rgba(15,23,42,.14);--font: "Inter", sans-serif;--font-head: "Outfit", sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);font-size:13px;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}#root{display:flex;min-height:100vh}button{font-family:var(--font);cursor:pointer;border:none;background:none}input,select,textarea{font-family:var(--font);outline:none}a{text-decoration:none;color:inherit}.sidebar{width:var(--sidebar-w);min-height:100vh;background:var(--sidebar-bg);display:flex;flex-direction:column;padding:0 0 20px;position:fixed;top:0;left:0;bottom:0;z-index:100;border-right:1px solid rgba(255,255,255,.04)}.sidebar-logo{padding:20px 16px 16px;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.06);margin-bottom:8px}.logo-mark{width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,var(--primary),var(--teal));display:flex;align-items:center;justify-content:center;font-family:var(--font-head);font-weight:800;font-size:13px;color:#fff;flex-shrink:0}.logo-text{font-family:var(--font-head);font-weight:700;font-size:14px;color:#fff}.logo-badge{margin-left:auto;background:#10b98126;color:#6ee7b7;border-radius:4px;padding:2px 6px;font-size:9px;font-weight:700;text-transform:uppercase}.nav-section{padding:10px 10px 4px;font-size:9px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:#fff3}.nav-item{display:flex;align-items:center;gap:9px;padding:8px 14px 8px 12px;margin:1px 8px;border-radius:7px;cursor:pointer;color:#ffffff73;font-size:13px;font-weight:500;transition:background .12s,color .12s;position:relative}.nav-item:hover{background:#ffffff0d;color:#fffc}.nav-item.active{background:#5b6ef526;color:#fff}.nav-item.active:before{content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%);width:3px;height:18px;background:var(--primary);border-radius:0 3px 3px 0}.nav-icon{width:16px;height:16px;flex-shrink:0;opacity:.7}.nav-item.active .nav-icon{opacity:1}.sidebar-spacer{flex:1}.sidebar-footer{padding:12px 14px;margin:0 8px;border-radius:8px;background:#ffffff0a;border:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:9px}.tutor-avatar{width:30px;height:30px;border-radius:50%;background:linear-gradient(135deg,var(--teal),var(--primary));display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;flex-shrink:0}.tutor-name{font-size:12px;font-weight:600;color:#ffffffd9}.tutor-role{font-size:10px;color:#ffffff4d}.sidebar-logout{margin:8px 8px 0;padding:7px 10px;border-radius:7px;font-size:11px;font-weight:600;color:#ffffff80;background:transparent;border:1px solid rgba(255,255,255,.06);cursor:pointer;transition:all .12s}.sidebar-logout:hover{color:#fff;background:#ffffff0d}.main{margin-left:var(--sidebar-w);flex:1;min-height:100vh;display:flex;flex-direction:column}.topbar{height:52px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 32px;position:sticky;top:0;z-index:50}.topbar-title{font-family:var(--font-head);font-size:15px;font-weight:700}.topbar-sep{width:1px;height:16px;background:var(--border)}.topbar-crumb{font-size:12px;color:var(--text-3)}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}.view{padding:28px 32px 60px;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}.page-hd{margin-bottom:24px}.page-hd h1{font-family:var(--font-head);font-size:22px;font-weight:700;letter-spacing:-.4px}.page-hd p{font-size:13px;color:var(--text-3);margin-top:3px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;font-size:12px;font-weight:600;cursor:pointer;border:none;transition:all .12s}.btn-primary{background:var(--primary);color:#fff;box-shadow:0 1px 6px #5b6ef547}.btn-primary:hover:not(:disabled){background:var(--primary-dk);transform:translateY(-1px);box-shadow:0 3px 12px #5b6ef559}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-ghost{background:var(--surface);color:var(--text-2);border:1px solid var(--border)}.btn-ghost:hover{background:var(--surface2);color:var(--text)}.btn-sm{padding:5px 11px;font-size:11px;border-radius:6px}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:5px;font-size:11px;font-weight:600;letter-spacing:.1px}.badge-green{background:var(--green-lt);color:#065f46}.badge-amber{background:var(--amber-lt);color:#92400e}.badge-red{background:var(--red-lt);color:#991b1b}.badge-blue{background:var(--primary-lt);color:var(--primary-dk)}.badge-teal{background:var(--teal-lt);color:#0e7490}.badge-gray{background:var(--surface2);color:var(--text-2)}.toolbar{display:flex;align-items:center;gap:10px;margin-bottom:18px}.search-box{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--surface);border:1px solid var(--border);border-radius:8px;flex:1;max-width:300px}.search-box input{border:none;font-size:12px;width:100%;color:var(--text);background:transparent}.roster-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.roster-table{width:100%;border-collapse:collapse;text-align:left}.roster-table th{padding:12px 16px;font-size:11px;font-weight:700;text-transform:uppercase;color:var(--text-3);border-bottom:1px solid var(--border);background:#fafbfc}.roster-table td{padding:14px 16px;border-bottom:1px solid var(--border);vertical-align:middle}.roster-table tr:last-child td{border-bottom:none}.roster-table tr:hover td{background:var(--surface2)}.rt-student{display:flex;align-items:center;gap:10px}.rt-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff}.rt-name{font-size:13px;font-weight:600;color:var(--text)}.rt-score{font-family:var(--font-head);font-size:16px;font-weight:700}.rt-target{font-size:11px;color:var(--text-3);margin-top:2px}.empty-state{padding:60px 24px;text-align:center;color:var(--text-3);font-size:13px}.empty-state-icon{font-size:32px;margin-bottom:10px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a66;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal-content{background:var(--surface);width:100%;max-width:720px;border-radius:12px;box-shadow:var(--shadow-lg);overflow:hidden}.modal-header{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center}.modal-title{font-family:var(--font-head);font-size:18px;font-weight:700}.modal-close{cursor:pointer;color:var(--text-3);display:flex}.modal-close:hover{color:var(--text)}.modal-body{padding:24px;max-height:70vh;overflow-y:auto}.builder-modes{display:flex;gap:10px;margin-bottom:24px}.mode-btn{flex:1;padding:14px;border:1.5px solid var(--border);border-radius:10px;background:var(--surface);text-align:left;cursor:pointer;transition:all .15s;display:flex;align-items:center;gap:12px}.mode-btn:hover{border-color:var(--primary-lt);background:var(--surface2)}.mode-btn.active{border-color:var(--primary);background:var(--primary-lt);box-shadow:0 4px 12px #5b6ef526}.mode-icon{width:36px;height:36px;border-radius:8px;background:var(--surface2);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}.mode-btn.active .mode-icon{background:var(--primary);color:#fff}.mode-text-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:2px}.mode-btn.active .mode-text-title{color:var(--primary-dk)}.mode-text-sub{font-size:11px;color:var(--text-2)}.builder-flow{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px 32px}.step-row{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border)}.step-row:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.step-header{font-size:14px;font-weight:700;color:var(--text);margin-bottom:12px;display:flex;align-items:center;gap:8px}.step-num{width:22px;height:22px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}.form-input,.form-select{width:100%;max-width:400px;padding:10px 12px;border-radius:8px;border:1.5px solid var(--border);font-size:13px;color:var(--text);background:var(--surface);cursor:pointer}.form-input:focus,.form-select:focus{border-color:var(--primary)}.form-input{cursor:text}textarea.form-input{resize:vertical;min-height:70px;max-width:100%;font-family:var(--font)}.module-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:500px}.module-card{padding:14px;border:1.5px solid var(--border);border-radius:8px;cursor:pointer;display:flex;align-items:center;gap:10px;font-weight:600}.module-card:hover{border-color:var(--primary-lt);background:var(--surface2)}.module-card.active{border-color:var(--primary);background:var(--primary-lt);color:var(--primary-dk)}.skill-list{display:flex;flex-direction:column;gap:8px;max-height:250px;overflow-y:auto;padding-right:10px}.skill-domain-header{font-size:11px;font-weight:700;text-transform:uppercase;color:var(--text-3);margin:12px 0 6px}.skill-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;background:var(--surface2);border:1px solid transparent;cursor:pointer}.skill-item:hover{border-color:var(--border)}.skill-item.selected{background:var(--primary-lt);border-color:var(--primary)}.skill-item input{width:14px;height:14px;accent-color:var(--primary);pointer-events:none}.student-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}.student-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border:1px solid var(--border);border-radius:8px;cursor:pointer}.student-item:hover{border-color:var(--primary-lt)}.student-item.selected{border-color:var(--primary);background:var(--primary-lt)}.student-item input{width:14px;height:14px;accent-color:var(--primary);pointer-events:none}.breakdown-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:12px;border:1px solid var(--border);border-radius:8px;overflow:hidden}.breakdown-table th{background:#fafbfc;padding:8px 12px;font-weight:600;text-align:left;border-bottom:1px solid var(--border)}.breakdown-table td{padding:8px 12px;border-bottom:1px solid var(--border)}.breakdown-table tr:last-child td{border-bottom:none}.generating-ui{display:flex;flex-direction:column;align-items:center;padding:30px;gap:16px}.spinner{width:32px;height:32px;border:3px solid var(--primary-lt);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#toast{position:fixed;bottom:28px;right:28px;background:#0f172a;color:#fff;padding:12px 20px;border-radius:8px;font-weight:600;box-shadow:var(--shadow-lg);z-index:9999}#toast.error{background:var(--red)}.login-shell{width:100%;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(135deg,#f6f8ff,#eef0fe)}.login-card{width:100%;max-width:400px;background:var(--surface);border-radius:16px;box-shadow:var(--shadow-lg);padding:36px 32px}.login-logo{display:flex;align-items:center;gap:10px;margin-bottom:28px;justify-content:center}.login-card h1{font-family:var(--font-head);font-size:22px;font-weight:700;margin-bottom:6px;text-align:center}.login-card p.sub{font-size:12px;color:var(--text-3);margin-bottom:24px;text-align:center}.login-card label{display:block;font-size:12px;font-weight:600;color:var(--text-2);margin-bottom:6px;margin-top:14px}.login-card input{width:100%;padding:10px 12px;border-radius:8px;border:1.5px solid var(--border);font-size:13px;background:var(--surface)}.login-card input:focus{border-color:var(--primary)}.login-error{color:var(--red);background:var(--red-lt);border:1px solid #fecaca;border-radius:6px;padding:8px 10px;font-size:11px;font-weight:600;margin-top:14px}