:root{--primary:#1e293b;--primary-light:#1e3a5f;--accent:#2563eb;--accent-light:#93c5fd;--accent-gradient:linear-gradient(135deg,#2563eb 0%,#3b82f6 50%,#60a5fa 100%);--bg:#f8fafc;--card-bg:#ffffff;--text:#1e293b;--text-light:#64748b;--text-muted:#94a3b8;--border:#e2e8f0;--border-light:#f1f5f9;--shadow:0 1px 3px rgba(0,0,0,0.04),0 1px 2px rgba(0,0,0,0.02);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -1px rgba(0,0,0,0.03);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.06),0 4px 6px -2px rgba(0,0,0,0.03);--radius:16px;--radius-sm:12px;--radius-xs:8px;--btn-radius:9999px;--input-radius:9999px;--input-bg:#f8fafc;--danger:#ef4444;--success:#10b981;--warning:#f59e0b;--table-header-bg:#eff6ff;--table-header-text:#1e40af;--table-border:#bfdbfe;--table-row-even:#f8fafc;--nav-height:52px;--transition:0.2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);display:flex;flex-direction:column;align-items:center;min-height:100vh;padding-bottom:calc(var(--nav-height) + 4px);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}input,textarea,button{-webkit-tap-highlight-color:transparent}input[type="text"],input[type="password"],input[type="number"],textarea{-webkit-appearance:none;outline:none}input[type="text"]:focus,input[type="password"]:focus,input[type="number"]:focus,textarea:focus{outline:none}#mainApp{width:100%}.app-only{display:none}body.logged-in #mainApp.app-only{display:block}body.logged-in .nav-tabs.app-only{display:flex}.tool-popup.app-only{display:none}.tool-popup.app-only.open{display:flex}.container{width:100%;max-width:1100px;margin:0 auto;padding:16px 16px 8px;display:flex;flex-direction:column;gap:12px}.header{background:var(--card-bg);border-radius:var(--radius);padding:8px 12px;box-shadow:var(--shadow-md);display:flex;align-items:center;justify-content:space-between;border:none;gap:8px}.class-selector{display:flex;align-items:center;gap:6px;min-width:0;flex:1}.class-selector > span:first-child{font-size:1rem}.class-name-display{font-weight:600;font-size:12px;color:var(--accent);cursor:pointer;padding:5px 10px;border-radius:var(--btn-radius);background:linear-gradient(135deg,#eff6ff 0%,#dbeafe 100%);max-width:180px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:var(--transition);border:1px solid var(--border);line-height:1.4;-webkit-tap-highlight-color:transparent}.class-name-display:hover{background:linear-gradient(135deg,#dbeafe 0%,#bfdbfe 100%)}.class-name-display:active{transform:scale(0.95);opacity:0.8}.btn{background:var(--accent-gradient);color:white;border:none;padding:8px 16px;border-radius:var(--btn-radius);font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:5px;transition:all var(--transition);box-shadow:0 2px 8px rgba(37,99,235,0.25);white-space:nowrap;outline:none;-webkit-tap-highlight-color:transparent}.btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(37,99,235,0.35)}.btn:active{transform:scale(0.97)}.btn:focus{outline:none}.btn-outline{background:transparent;color:var(--accent);border:1.5px solid var(--accent);box-shadow:none}.btn-outline:hover{background:#eff6ff;box-shadow:0 2px 8px rgba(37,99,235,0.12)}.btn-outline:active{background:#dbeafe;transform:scale(0.97)}.btn-sm{padding:6px 12px;font-size:12px}.btn-xs{padding:5px 10px;font-size:11px;background:linear-gradient(135deg,#f1f5f9 0%,#e2e8f0 100%);color:var(--text);box-shadow:none;border-radius:var(--btn-radius);font-weight:500}.btn-xs:hover{background:linear-gradient(135deg,#e2e8f0 0%,#cbd5e1 100%)}.btn-xs:active{opacity:0.7;transform:scale(0.96)}.card{background:var(--card-bg);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-md);border:none;display:flex;flex-direction:column;gap:10px;margin-bottom:12px;transition:box-shadow var(--transition)}.card:hover{box-shadow:var(--shadow-lg)}.card-title{font-size:1.05rem;font-weight:700;color:var(--primary);text-align:left;display:flex;align-items:center;gap:8px}.card-title::before{content:'';width:4px;height:18px;background:var(--accent-gradient);border-radius:2px}.nav-tabs{display:flex;gap:4px;background:var(--card-bg);border-radius:9999px;padding:5px;box-shadow:var(--shadow-lg);border:none;position:fixed;bottom:16px;left:50%;transform:translateX(-50%);width:calc(100% - 32px);max-width:400px;z-index:20;justify-content:center}.nav-tab{flex:1;text-align:center;padding:10px 6px;border-radius:var(--btn-radius);font-weight:600;font-size:13px;color:var(--text-light);cursor:pointer;background:transparent;border:none;display:flex;flex-direction:column;align-items:center;gap:2px;white-space:nowrap;min-width:0;-webkit-tap-highlight-color:transparent;outline:none;user-select:none;transition:all var(--transition)}.nav-tab:hover{color:var(--accent);background:#eff6ff}.nav-tab:active{transform:scale(0.95);opacity:0.8}.nav-tab.active{background:var(--accent-gradient);color:white;box-shadow:0 2px 8px rgba(37,99,235,0.3)}@media (max-width:400px){.nav-tab{font-size:11px;padding:10px 6px}.nav-tabs{padding:5px}}@media (max-width:480px){.btn{padding:7px 14px;font-size:12px}.btn-sm{padding:5px 10px;font-size:11px}.btn-xs{padding:4px 8px;font-size:10px}.input{padding:7px 10px;font-size:12px}.date-select{padding:7px 10px;font-size:12px}.date-action-btn{width:28px;height:28px;font-size:12px}.class-name-display{max-width:130px;font-size:11px;padding:4px 8px}.style-modal-overlay{padding-top:16px;padding-bottom:40px}.style-modal{width:auto;margin:0 10px;padding:12px 12px 8px 12px;gap:6px;max-height:none}.style-modal-header{font-size:15px}.style-section-label{font-size:10px;margin-bottom:-4px}.preset-grid{gap:6px}.preset-card{padding:5px 10px;font-size:11px}.style-color-grid{gap:6px 10px}.style-color-item{padding:6px 8px}.style-color-item > span{font-size:12px;min-width:44px}.style-color-item input[type="color"]{width:28px;height:24px}.style-row-height-row > span{font-size:12px}.style-save-btn{padding:6px;font-size:11px}}.table-wrapper{overflow:auto;border-radius:var(--radius-sm);border:1px solid var(--table-border);max-height:60vh;position:relative;background:white}.table-wrapper::-webkit-scrollbar{height:6px;width:6px}.table-wrapper::-webkit-scrollbar-thumb{background:#93c5fd;border-radius:3px}.table-wrapper::-webkit-scrollbar-track{background:#eff6ff}table{border-collapse:collapse;font-size:13px;background:white;width:auto;min-width:100%;table-layout:auto}th{background:var(--table-header-bg);color:var(--table-header-text);font-weight:600;padding:10px 12px;text-align:center;border:1px solid var(--table-border);white-space:nowrap;position:sticky;top:0;z-index:2;font-size:13px}td{padding:6px 8px;text-align:center;border:1px solid var(--table-border);white-space:nowrap;vertical-align:middle}tbody tr{background-color:#ffffff}tbody tr:nth-child(even){background-color:var(--table-row-even)}tbody tr:hover{background-color:#eff6ff}.radar-table{margin-top:12px;width:100%;border-collapse:collapse;font-size:13px;background:white}.radar-table th{background:var(--table-header-bg);color:var(--table-header-text);font-weight:600;padding:8px 12px;text-align:center;border:1px solid var(--table-border);position:static}.radar-table td{padding:6px 8px;text-align:center;border:1px solid var(--table-border)}.radar-table tbody tr:nth-child(even){background-color:var(--table-row-even)}.radar-table .radar-total-row td{background:#fef3c7;font-weight:600}.radar-table th:first-child,.radar-table td:first-child{position:static;width:auto;min-width:auto;padding:6px 8px;background-color:inherit}.radar-table th:nth-child(2),.radar-table td:nth-child(2){position:static;width:auto;min-width:auto}th:first-child,td:first-child{position:sticky;left:0;z-index:3;width:45px;min-width:45px;padding:6px 6px;background-color:inherit}th:first-child{z-index:5;background-color:var(--table-header-bg)}th:nth-child(2),td:nth-child(2){position:sticky;left:45px;z-index:3;width:80px;min-width:80px;background-color:inherit}th:nth-child(2){z-index:5;background-color:var(--table-header-bg)}.cell-input{border:1.5px solid transparent;background:transparent;padding:4px 8px;font-size:13px;text-align:center;border-radius:var(--btn-radius);outline:none;min-width:100px;box-sizing:border-box;transition:var(--transition)}.cell-input:focus{border-color:var(--accent);background:#fff;box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.active-cell-highlight{border-color:var(--accent) !important;background:#fff !important;box-shadow:0 0 0 3px rgba(37,99,235,0.15) !important}.save-indicator{font-size:13px;color:var(--success);font-weight:600}.empty-state{text-align:center;padding:30px;color:var(--text-muted);font-size:13px}.th-input{width:100%;border:none;background:transparent;font-weight:600;text-align:center;color:inherit;font-size:inherit;outline:none;padding:2px}.th-input:focus{background:rgba(255,255,255,0.9);border-radius:6px;outline:2px solid var(--accent-light)}.date-selector-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}.date-select{padding:8px 14px;border-radius:var(--btn-radius);border:1.5px solid var(--border);font-size:13px;font-weight:600;background:var(--input-bg);color:var(--text);cursor:pointer;min-width:96px;transition:var(--transition);outline:none;-webkit-tap-highlight-color:transparent}.date-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.date-select:hover{border-color:var(--accent-light)}.date-action-btn{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--border);background:var(--input-bg);color:var(--text-light);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:14px;transition:var(--transition);-webkit-tap-highlight-color:transparent}.date-action-btn:hover{border-color:var(--accent);color:var(--accent);background:#eff6ff}.date-action-btn:active{transform:scale(0.9);opacity:0.7}.date-action-btn.danger:hover{border-color:var(--danger);color:var(--danger);background:#fef2f2}.date-chip{background:var(--input-bg);padding:8px 16px;border-radius:var(--btn-radius);font-weight:600;font-size:12px;border:1.5px solid var(--border);cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:var(--transition);-webkit-tap-highlight-color:transparent}.date-chip:hover{border-color:var(--accent);background:#eff6ff}.date-chip:active{transform:scale(0.95);opacity:0.8}.date-chip.active{background:var(--accent-gradient);color:white;border-color:transparent;box-shadow:0 2px 8px rgba(37,99,235,0.25)}.date-chip .delete-date{cursor:pointer;font-weight:bold;margin-left:4px;color:inherit;opacity:0.7}.date-chip .delete-date:hover{opacity:1}.capsule-btn{background:linear-gradient(135deg,#f8fafc 0%,#f1f5f9 100%);border:1.5px solid var(--border);border-radius:var(--radius);padding:10px 16px;font-weight:600;font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;width:100%;transition:var(--transition);color:var(--text);-webkit-tap-highlight-color:transparent}.capsule-btn:hover{background:linear-gradient(135deg,#f1f5f9 0%,#e2e8f0 100%);box-shadow:var(--shadow)}.capsule-btn:active{background:#e2e8f0;transform:scale(0.99)}.capsule-btn[aria-expanded="true"]{border-radius:var(--radius) var(--radius) 0 0;border-bottom-color:transparent}.collapsible{margin-bottom:12px}.collapsible:last-child{margin-bottom:0}.collapsible-content{padding:12px;background:var(--card-bg);border-radius:0 0 var(--radius) var(--radius);margin-top:0;border:1.5px solid var(--border);border-top:none;display:none}.style-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.35);z-index:10000;display:flex;align-items:flex-start;justify-content:center;padding-top:40px;padding-bottom:40px;overflow-y:auto;overscroll-behavior:contain;animation:modalOverlayIn 0.3s cubic-bezier(0.16,1,0.3,1)}.style-modal-overlay.closing{animation:modalOverlayOut 0.2s cubic-bezier(0.16,1,0.3,1) forwards}@keyframes modalOverlayIn{from{opacity:0}to{opacity:1}}@keyframes modalOverlayOut{from{opacity:1}to{opacity:0}}.style-modal{background:var(--card-bg);border-radius:16px;box-shadow:0 8px 40px rgba(0,0,0,0.18);width:480px;max-width:calc(100vw - 48px);padding:20px 20px 12px 20px;display:flex;flex-direction:column;gap:10px;animation:modalSlideIn 0.35s cubic-bezier(0.16,1,0.3,1)}.style-modal.closing{animation:modalSlideOut 0.2s cubic-bezier(0.16,1,0.3,1) forwards}@keyframes modalSlideIn{from{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes modalSlideOut{from{transform:translateY(0);opacity:1}to{transform:translateY(16px);opacity:0}}.style-modal-header{display:flex;align-items:center;justify-content:space-between;font-weight:700;font-size:16px;color:var(--text)}.style-modal-close{width:30px;height:30px;border-radius:50%;background:#f1f5f9;border:none;cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center;color:var(--text-light);-webkit-tap-highlight-color:transparent}.style-modal-close:active{background:#e2e8f0}.style-section-label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px}.preset-grid{display:flex;gap:8px;flex-wrap:wrap}.preset-card{display:flex;align-items:center;justify-content:center;padding:7px 14px;border-radius:20px;border:1.5px solid transparent;cursor:pointer;transition:all 0.15s;font-size:12px;font-weight:600;-webkit-tap-highlight-color:transparent;user-select:none}.preset-card:hover{opacity:0.85}.preset-card:active{transform:scale(0.96)}.preset-card.active{box-shadow:0 0 0 2px var(--accent),0 2px 8px rgba(37,99,235,0.25)}.style-color-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px}.style-color-item{display:flex;align-items:center;gap:6px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;padding:8px 10px}.style-color-item > span{font-size:13px;color:var(--text);min-width:56px}.style-color-item input[type="color"]{width:32px;height:28px;border:1px solid var(--border);border-radius:4px;padding:0;cursor:pointer;background:white;-webkit-appearance:none}.style-color-row input[type="color"]{width:36px;height:28px;border:1px solid var(--border);border-radius:4px;padding:0;cursor:pointer;background:none;-webkit-appearance:none}.style-row-height-row{display:flex;align-items:center;gap:8px}.style-row-height-row > span{font-size:12px;min-width:56px;color:var(--text)}.style-row-height-row input[type="number"]{width:60px;height:28px;padding:2px 6px;border:1px solid var(--border);border-radius:4px;font-size:13px;text-align:center;-webkit-appearance:none}.style-save-btn{width:100%;padding:7px;border:1.5px dashed var(--border);border-radius:10px;background:transparent;cursor:pointer;font-size:12px;font-weight:600;color:var(--text-muted);transition:all 0.15s;-webkit-tap-highlight-color:transparent}.style-save-btn:hover{border-color:var(--accent);color:var(--accent);background:#eff6ff}.style-save-btn:active{transform:scale(0.98)}.float-btn{position:fixed;z-index:9999;width:50px;height:50px;border-radius:50%;background:var(--accent-gradient);color:white;box-shadow:0 4px 15px rgba(37,99,235,0.4);display:none;align-items:center;justify-content:center;cursor:pointer;font-size:20px;touch-action:none;user-select:none;transition:var(--transition);-webkit-tap-highlight-color:transparent}.float-btn:hover{transform:scale(1.05);box-shadow:0 6px 20px rgba(37,99,235,0.5)}.float-btn:active{transform:scale(0.9);opacity:0.8}.tool-popup{position:fixed;z-index:9998;background:var(--card-bg);border-radius:14px;box-shadow:0 10px 40px rgba(0,0,0,0.12);padding:6px;display:none;flex-direction:column;gap:2px;max-width:260px;width:80%;max-height:360px;overflow-y:auto;touch-action:none;user-select:none;border:1px solid var(--border-light)}.tool-popup.open{display:flex}.popup-header{display:flex;justify-content:space-between;align-items:center;cursor:move;font-weight:600;color:var(--primary)}.close-popup{background:#f1f5f9;border:none;font-size:14px;cursor:pointer;color:var(--text-light);width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:var(--transition);-webkit-tap-highlight-color:transparent}.close-popup:hover{background:#e5e7eb;color:var(--text)}.close-popup:active{transform:scale(0.85);opacity:0.7}.quick-tag{padding:6px 12px;border-radius:var(--btn-radius);font-size:12px;font-weight:600;cursor:pointer;white-space:nowrap;transition:var(--transition);-webkit-tap-highlight-color:transparent;user-select:none}.quick-tag:hover{transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,0,0,0.08)}.quick-tag:active{transform:scale(0.92);opacity:0.75}.color-dot{width:26px;height:26px;border-radius:50%;cursor:pointer;border:2px solid var(--border);transition:var(--transition);-webkit-tap-highlight-color:transparent}.color-dot:hover{transform:scale(1.15);border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.15)}.color-dot:active{transform:scale(0.85);opacity:0.7}.tool-edit-panel{display:none;flex-direction:column;gap:6px;max-height:260px;overflow-y:auto}.tool-edit-row{display:flex;align-items:center;gap:4px;flex-wrap:wrap;background:var(--input-bg);padding:6px 8px;border-radius:var(--radius-sm);border:1px solid var(--border-light)}.tool-edit-row input[type="text"]{flex:1;min-width:50px;padding:3px 6px;font-size:11px;border:1px solid var(--border);border-radius:var(--input-radius);outline:none;background:var(--card-bg)}.tool-edit-row input[type="text"]:focus{border-color:var(--accent)}.tool-edit-row input[type="color"]{width:28px;height:24px;border:1px solid var(--border);border-radius:4px;padding:0;cursor:pointer;background:none}.tool-edit-row .btn.btn-xs{padding:3px 6px;font-size:10px}.popup-footer{display:flex;justify-content:space-between;gap:4px;margin-top:2px;padding-top:6px;border-top:1px solid var(--border)}.popup-action-btn{padding:7px 14px;border-radius:var(--btn-radius);border:1.5px solid var(--border);background:var(--input-bg);color:var(--text);font-size:11px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:3px;transition:var(--transition);-webkit-tap-highlight-color:transparent;white-space:nowrap}.popup-action-btn:hover{background:#eff6ff;border-color:var(--accent-light)}.popup-action-btn:active{background:#dbeafe;transform:scale(0.95);opacity:0.8}.class-card{display:flex;justify-content:space-between;align-items:center;background:var(--card-bg);border-radius:var(--btn-radius);padding:12px 16px;border-left:3px solid var(--accent);margin-bottom:8px;cursor:pointer;box-shadow:var(--shadow);transition:var(--transition);-webkit-tap-highlight-color:transparent}.class-card:hover{background:#eff6ff;transform:translateX(3px);box-shadow:var(--shadow-md)}.class-card:active{transform:scale(0.98);opacity:0.8}.class-card-wrapper{transition:transform 0.25s ease}.class-card-wrapper.dragging{opacity:0.3;z-index:999;transition:none}.drag-handle{cursor:grab;touch-action:none;user-select:none;font-size:20px;color:var(--text-muted);flex-shrink:0;line-height:1;margin-right:4px}.drag-handle:active{cursor:grabbing}.class-card-wrapper.drag-shift-down{transform:translateY(calc(100% + 8px))}.class-card-wrapper.drag-shift-up{transform:translateY(calc(-100% - 8px))}.class-card-name{font-weight:600;color:var(--primary);font-size:14px;text-align:left}.student-modal{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow-lg);margin-top:10px;padding:16px;border:1px solid var(--border-light);display:none;flex-direction:column;gap:12px;max-width:100%;overflow-x:auto;-webkit-tap-highlight-color:transparent}.student-modal.open{display:flex;animation:modalFadeIn 0.2s ease-out}.class-card,.class-card *{-webkit-tap-highlight-color:transparent}@keyframes modalFadeIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.custom-dialog-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(15,23,42,0.4);display:flex;align-items:center;justify-content:center;z-index:99999;animation:modalFadeIn 0.15s ease-out;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.custom-dialog{background:#fff;border-radius:20px;padding:20px 24px;min-width:280px;max-width:90vw;box-shadow:0 20px 60px rgba(0,0,0,0.15)}.custom-dialog-msg{font-size:15px;font-weight:600;color:#1e293b;text-align:center;margin-bottom:12px;word-break:break-all}.custom-dialog-input{width:100%;padding:8px 12px;font-size:15px;border:2px solid #e2e8f0;border-radius:12px;outline:none;text-align:center;margin-bottom:12px;box-sizing:border-box}.custom-dialog-input:focus{border-color:#2563eb}.custom-dialog-btns{display:flex;gap:8px;justify-content:center}.custom-dialog-btns button{min-width:80px;padding:8px 18px;border-radius:9999px;font-size:14px;font-weight:600;border:none;cursor:pointer;-webkit-tap-highlight-color:transparent}.custom-dialog-btn-cancel{background:#f1f5f9;color:#64748b}.custom-dialog-btn-ok{background:#2563eb;color:#fff}.student-list-item{display:flex;justify-content:space-between;align-items:center;background:var(--card-bg);border-radius:var(--radius-sm);padding:12px 14px;margin-bottom:8px;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);-webkit-tap-highlight-color:transparent}.student-list-item:hover{box-shadow:var(--shadow-md);border-color:var(--accent-light)}.student-list-item:active{background:#f8fafc;transform:scale(0.98)}.check-group{display:flex;flex-wrap:wrap;gap:10px}.check-group label{display:flex;align-items:center;gap:5px;font-size:13px;cursor:pointer;padding:6px 12px;border-radius:var(--btn-radius);border:1px solid transparent;transition:var(--transition)}.check-group label:hover{background:#eff6ff}.check-group input[type="checkbox"]{accent-color:var(--accent)}.chart-desc{font-size:12px;color:var(--text-light);margin-top:6px;text-align:center}.feedback-actions{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.ai-textarea{width:100%;padding:12px 16px;border-radius:16px;border:1.5px solid var(--border);resize:vertical;font-family:inherit;font-size:13px;transition:var(--transition);outline:none}.ai-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.input{padding:8px 14px;border-radius:var(--btn-radius);border:1.5px solid var(--border);font-size:13px;transition:var(--transition);outline:none;background:var(--input-bg)}.input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.1);background:#fff}.stat-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}.stat-table th{white-space:nowrap}.stat-table td{white-space:normal;overflow-wrap:break-word;min-width:110px}.stat-table th:first-child,.stat-table td:first-child{white-space:nowrap;position:sticky;left:0;background-color:#fff;z-index:3}.stat-table th:first-child{z-index:5;background-color:var(--table-header-bg)}@media (max-width:600px){.stat-table{font-size:11px}.stat-table th,.stat-table td{padding:6px 6px}.table-wrapper{-webkit-overflow-scrolling:touch}.tool-popup{max-width:92%;padding:6px;max-height:320px}}.user-menu{position:fixed;z-index:99999;background:var(--card-bg);border-radius:12px;box-shadow:0 6px 24px rgba(0,0,0,0.12);display:flex;flex-direction:column;overflow:hidden;min-width:130px}.user-menu button{padding:10px 16px;border:none;background:none;font-size:13px;cursor:pointer;text-align:left;color:var(--text);transition:background 0.15s;-webkit-tap-highlight-color:transparent}.user-menu button:hover{background:#f1f5f9}.user-menu button:active{background:#e2e8f0}.user-menu button + button{border-top:1px solid var(--border)}#fullTable tbody td{white-space:normal;overflow-wrap:break-word;max-width:300px;min-width:120px}#fullTable th{white-space:nowrap;min-width:120px}#fullTable th:first-child{min-width:45px;width:45px;padding:6px 6px;z-index:5}#fullTable th:nth-child(2){min-width:80px;width:80px;z-index:5}#fullTable td:first-child{position:sticky;left:0;min-width:45px;width:45px;white-space:nowrap;z-index:3;background-color:inherit}#fullTable td:nth-child(2){position:sticky;left:45px;min-width:80px;width:80px;white-space:nowrap;z-index:3;background-color:inherit}.view{animation:fadeIn 0.25s ease-out}@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}::selection{background:#bfdbfe;color:var(--primary)}.settings-card{padding:0;overflow:hidden;border-radius:var(--radius)}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border-light)}.settings-back{background:none;border:none;font-size:14px;color:var(--accent);cursor:pointer;font-weight:500;padding:4px 0}.settings-back:active{opacity:0.6}.settings-title{font-weight:700;font-size:15px;color:var(--text)}.settings-avatar{display:flex;justify-content:center;padding:20px 0 8px}.settings-avatar-circle{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:36px;line-height:1;transition:all 0.3s}.avatar-male{background:linear-gradient(135deg,#dbeafe 0%,#bfdbfe 100%);box-shadow:0 4px 12px rgba(37,99,235,0.2)}.avatar-female{background:linear-gradient(135deg,#fce7f3 0%,#fbcfe8 100%);box-shadow:0 4px 12px rgba(244,114,182,0.2)}.avatar-unset{background:linear-gradient(135deg,#f1f5f9 0%,#e2e8f0 100%);box-shadow:0 4px 12px rgba(0,0,0,0.06)}.settings-name-row{display:flex;align-items:center;justify-content:center;gap:8px;padding:0 16px 14px;min-height:28px}.settings-name-row span{font-size:16px;font-weight:600;color:var(--text)}.settings-section{padding:6px 16px}.settings-label{font-size:11px;color:var(--text-muted);margin-bottom:4px;font-weight:500;text-transform:uppercase;letter-spacing:0.5px}.settings-value{font-size:14px;color:var(--text);display:block;padding:4px 0}.settings-gender-row{display:flex;gap:8px}.settings-gender-card{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px 4px;border:1.5px solid var(--border);border-radius:var(--radius-xs);cursor:pointer;transition:all 0.15s;background:var(--card-bg);font-size:13px;font-weight:500;color:var(--text-muted)}.settings-gender-card:active{transform:scale(0.96)}.settings-gender-card.active{border-color:var(--accent);background:#eff6ff;color:var(--accent);font-weight:600;box-shadow:0 0 0 2px rgba(37,99,235,0.1)}.gender-icon{font-size:18px;line-height:1}.settings-select{width:100%;padding:8px 12px;border-radius:var(--radius-xs);border:1.5px solid var(--border);font-size:14px;background:var(--card-bg);color:var(--text);outline:none}.settings-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.08)}.settings-actions{display:flex;gap:8px;padding:12px 16px}.settings-actions:last-child{padding-top:0}.login-overlay{position:fixed;inset:0;z-index:99999;background:linear-gradient(165deg,#f0f4fa 0%,#e8eef8 40%,#dce5f2 100%);display:flex;align-items:center;justify-content:center;overflow-y:auto;-webkit-overflow-scrolling:touch}.login-overlay::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 30% 20%,rgba(37,99,235,0.06) 0%,transparent 60%),radial-gradient(ellipse at 70% 80%,rgba(59,130,246,0.04) 0%,transparent 60%);pointer-events:none}.login-card{background:#ffffff;border-radius:22px;padding:40px 30px 34px;width:88%;max-width:370px;box-shadow:0 1px 2px rgba(0,0,0,0.02),0 4px 16px rgba(30,60,120,0.06),0 12px 40px rgba(30,60,120,0.05);text-align:center;position:relative;animation:cardRise 0.55s cubic-bezier(0.22,0.61,0.36,1);isolation:isolate}.login-card::after{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);width:36px;height:3px;border-radius:0 0 2px 2px;background:var(--accent-gradient)}@keyframes cardRise{from{opacity:0;transform:translateY(20px) scale(0.97)}to{opacity:1;transform:translateY(0) scale(1)}}.login-card h2{font-family:"Noto Serif SC","Songti SC","STSong","Georgia","Times New Roman",serif;font-size:1.45rem;margin:0 0 6px;color:var(--primary);font-weight:700;letter-spacing:0.03em}.login-tabs{display:flex;gap:0;margin:24px 0 22px;border-radius:9999px;background:var(--input-bg);padding:3px}.login-tab{flex:1;padding:9px 0;border:none;background:transparent;font-size:13px;font-weight:600;cursor:pointer;border-radius:9999px;color:var(--text-light);transition:all 0.28s cubic-bezier(0.4,0,0.2,1);-webkit-tap-highlight-color:transparent;letter-spacing:0.04em}.login-tab.active{background:var(--accent-gradient);color:#fff;box-shadow:0 2px 8px rgba(37,99,235,0.25)}.login-tab:active{transform:scale(0.96)}.login-input{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--border);font-size:14px;margin-bottom:10px;background:var(--input-bg);outline:none;transition:all 0.25s ease;color:var(--text);box-sizing:border-box;font-family:inherit}.login-input::placeholder{color:var(--text-muted)}.login-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.1);background:#ffffff}.login-btn{width:100%;padding:12px 0;border-radius:12px;background:var(--accent-gradient);color:#fff;border:none;font-size:15px;font-weight:600;cursor:pointer;transition:all 0.25s ease;-webkit-tap-highlight-color:transparent;margin-top:8px;letter-spacing:0.08em}.login-btn:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(37,99,235,0.3)}.login-btn:active{transform:scale(0.98);background:#1d4ed8}.login-msg{font-size:12px;margin-top:10px;min-height:18px}.login-msg.error{color:var(--danger)}.login-msg.success{color:var(--success)}.comm-layout{display:flex;gap:12px;flex-wrap:wrap;align-items:stretch}.comm-left{flex:1 1 260px;min-width:0;display:flex;flex-direction:column}.comm-right{flex:1 1 380px;min-width:0;max-width:100%;display:flex;flex-direction:column}.comm-right .comm-card{flex:1;display:flex;flex-direction:column}.comm-right .comm-card .tag-capsules{flex-shrink:0}.comm-right .comm-card .comm-preview-box{flex:1}.comm-right .comm-card .comm-actions{flex-shrink:0}.comm-right .comm-card .api-key-input{flex-shrink:0}.comm-left .comm-card:last-child{flex:1;display:flex;flex-direction:column}.comm-left .comm-card:last-child .tag-scene-tabs{flex-shrink:0}.comm-left .comm-card:last-child .tag-list{flex:1}.comm-card{background:var(--card-bg);border-radius:var(--radius);padding:12px;box-shadow:var(--shadow);margin-bottom:12px}.comm-card-title{font-weight:600;margin-bottom:8px;font-size:14px;display:flex;align-items:center;gap:6px}.comm-student-select{width:100%;padding:8px 12px;border-radius:var(--btn-radius);border:1px solid var(--border);background:var(--input-bg);font-size:14px}.tag-scene-tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:8px}.tag-scene-tab{padding:4px 10px;border-radius:var(--btn-radius);background:var(--input-bg);border:1px solid var(--border);font-size:11px;font-weight:500;cursor:pointer;transition:all 0.2s;white-space:nowrap;display:inline-flex;align-items:center;gap:4px}.tag-scene-tab:hover{background:#eff6ff;border-color:var(--accent-light)}.tag-scene-tab.active{background:var(--accent-gradient);color:white;border-color:transparent;box-shadow:0 2px 6px rgba(37,99,235,0.3)}.tag-scene-tab .badge{background:rgba(255,255,255,0.3);border-radius:10px;padding:0 6px;font-size:10px;margin-left:4px}.scene-icons{display:inline-flex;gap:3px;max-width:0;opacity:0;overflow:hidden;transition:all 0.2s ease;white-space:nowrap;margin-left:auto}.scene-icons.on{max-width:50px;opacity:1}.scene-icons .tag-icon{font-size:10px;width:18px;height:18px;line-height:18px;text-align:center;display:inline-block;border-radius:50%;border:1px solid;transition:all 0.15s;cursor:pointer;flex-shrink:0}.scene-icons .tag-icon.edit{color:var(--accent);border-color:var(--accent);opacity:0.5}.scene-icons .tag-icon.del{color:var(--danger);border-color:var(--danger);opacity:0.4}.scene-icons .tag-icon.edit:hover{opacity:1;background:var(--accent);color:#fff;transform:scale(1.15)}.scene-icons .tag-icon.del:hover{opacity:1;background:var(--danger);color:#fff;transform:scale(1.15)}.scene-icons .tag-icon:active{transform:scale(0.9);opacity:1}.tag-scene-tab.active .scene-icons .tag-icon{color:rgba(255,255,255,0.9);border-color:rgba(255,255,255,0.7);opacity:1}.tag-scene-tab.active .scene-icons .tag-icon.del{color:rgba(255,200,200,0.95);border-color:rgba(255,200,200,0.7);opacity:1}.tag-scene-tab.active .scene-icons .tag-icon:hover{background:rgba(255,255,255,0.25);color:#fff}.tag-scene-tab.shaking{animation:tagShakeOut 0.45s ease forwards;pointer-events:none}.tag-list{max-height:360px;overflow-y:auto}.tag-item > span:not(.tag-icon){flex:1}.tag-item .tag-icon.edit{margin-left:auto}.tag-item{display:flex;align-items:center;gap:6px;padding:5px 8px;margin:2px 0;border-radius:var(--radius-xs);cursor:pointer;border:1px solid transparent;transition:background 0.15s;font-size:13px}.tag-item:hover{background:var(--input-bg)}.tag-item.selected{background:#eff6ff;border-color:var(--accent-light)}.tag-item input[type="checkbox"]{accent-color:var(--accent);transform:scale(1.1);pointer-events:none}.tag-capsules{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px;min-height:28px}.tag-capsule{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:9999px;background:#eff6ff;border:1px solid var(--accent-light);font-size:12px;color:var(--accent);font-weight:500}.tag-capsule .remove{cursor:pointer;font-weight:bold;margin-left:2px;opacity:0.6}.tag-capsule .remove:hover{opacity:1}.comm-preview-box{width:100%;min-height:300px;padding:14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--input-bg);font-size:14px;line-height:1.8;resize:vertical;font-family:inherit;outline:none;box-sizing:border-box}.comm-preview-box:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}.comm-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.ai-polish-btn{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:white;border:none;padding:8px 16px;border-radius:var(--btn-radius);font-size:12px;font-weight:600;cursor:pointer}.ai-polish-btn:hover{opacity:0.9}.api-key-input{width:100%;padding:8px 12px;border-radius:var(--btn-radius);border:1px solid var(--border);background:var(--input-bg);font-size:12px;margin-top:8px}.comm-mode-toggle{display:flex;gap:0;border-radius:var(--btn-radius);background:var(--input-bg);padding:3px}.comm-mode-toggle .mode-btn{flex:1;padding:7px 12px;border:none;background:transparent;font-size:12px;font-weight:600;cursor:pointer;border-radius:var(--btn-radius);color:var(--text-light);transition:all 0.25s ease;white-space:nowrap;-webkit-tap-highlight-color:transparent}.comm-mode-toggle .mode-btn.active{background:var(--accent-gradient);color:#fff;box-shadow:0 2px 6px rgba(37,99,235,0.25)}.comm-mode-toggle .mode-btn:active{transform:scale(0.96)}.comm-phase-stat-row{display:flex;justify-content:space-between;align-items:center;padding:5px 0;border-bottom:1px solid var(--border);font-size:13px}.comm-phase-stat-label{color:var(--text);min-width:0}.comm-phase-stat-value{font-weight:600;white-space:nowrap;margin-left:8px}.comm-phase-stat-value.up{color:var(--success)}.comm-phase-stat-value.down{color:var(--danger)}@keyframes tagShakeOut{0%{transform:translateX(0);opacity:1}15%{transform:translateX(-6px)}30%{transform:translateX(6px)}45%{transform:translateX(-4px)}60%{transform:translateX(4px)}75%{transform:translateX(-2px)}90%{transform:translateX(0);opacity:1}100%{transform:translateX(0);opacity:0;max-height:0;padding:0;margin:0;overflow:hidden}}.tag-item.removing{animation:tagShakeOut 0.5s ease forwards;pointer-events:none}.tag-item .tag-icon{cursor:pointer;font-size:10px;width:18px;height:18px;line-height:18px;text-align:center;display:inline-block;border-radius:50%;border:1px solid;transition:all 0.15s;flex-shrink:0}.tag-item .tag-icon.edit{color:var(--accent);border-color:var(--accent);opacity:0.5}.tag-item .tag-icon.del{color:var(--danger);border-color:var(--danger);opacity:0.4}.tag-item .tag-icon.edit:hover{opacity:1;background:var(--accent);color:#fff;transform:scale(1.15)}.tag-item .tag-icon.del:hover{opacity:1;background:var(--danger);color:#fff;transform:scale(1.15)}.tag-item .tag-icon:active{transform:scale(0.9);opacity:1}@media (max-width:640px){.comm-layout{flex-direction:column}.comm-left,.comm-right{flex:1 1 auto;width:100%;max-width:100%}.comm-right .comm-card{flex:0 0 auto}.comm-left .comm-card:last-child{flex:0 0 auto}#commDataSummary table{table-layout:auto}}.column-list{display:flex;flex-direction:column;gap:6px;max-height:340px;overflow-y:auto}.column-row{display:flex;align-items:center;gap:6px;background:#f8fafc;border-radius:10px;padding:6px 10px;border:1px solid #e2e8f0;transition:border-color 0.15s}.column-row:hover{border-color:#93c5fd}.column-row .drag-handle{cursor:grab;font-size:12px;color:var(--text-muted);user-select:none;flex-shrink:0}.column-row input[type="text"]{flex:1;min-width:60px;padding:4px 8px;font-size:13px;border:1px solid var(--border);border-radius:6px;outline:none;background:white}.column-row input[type="text"]:focus{border-color:var(--accent)}.column-maxscore-row{display:flex;align-items:center;gap:2px;flex-shrink:0}.column-maxscore-row span{font-size:11px;color:var(--text-muted)}.column-maxscore-input{width:48px;padding:4px 4px;font-size:13px;text-align:center;border:1px solid var(--border);border-radius:6px;outline:none;background:white}.column-maxscore-input:focus{border-color:var(--accent)}.column-row .col-delete-btn{width:24px;height:24px;border-radius:50%;border:none;background:transparent;cursor:pointer;font-size:16px;color:var(--danger);flex-shrink:0;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent}.column-row .col-delete-btn:active{background:#fee2e2}.column-add-btn{padding:6px;border:1.5px dashed var(--border);border-radius:10px;background:transparent;cursor:pointer;font-size:12px;color:var(--text-muted);width:100%;transition:all 0.15s;-webkit-tap-highlight-color:transparent}.column-add-btn:hover{border-color:var(--accent);color:var(--accent)}.template-toggle-row{display:flex;gap:8px;margin-top:6px}.template-toggle-row .btn{flex:1;text-align:center}.column-template-list{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px;transition:max-height 0.35s cubic-bezier(0.16,1,0.3,1),opacity 0.25s ease,margin 0.35s ease}@media (max-width:480px){.column-row{padding:3px 6px;gap:3px}.column-row input[type="text"]{font-size:12px;min-width:50px;padding:3px 6px}.column-maxscore-input{width:36px;font-size:11px;padding:3px 2px}.column-list{max-height:260px}.column-add-btn{padding:6px;font-size:12px}}