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.error-details[data-v-6c05dbdd]{margin-top:2rem;padding:1.5rem;background:#fff3cd;border:2px solid #ffc107;border-radius:12px;text-align:left;max-width:600px;margin-left:auto;margin-right:auto}.loading-state .warning-text[data-v-6c05dbdd]{color:#856404;font-size:.95rem;margin-top:1rem;line-height:1.6}.content-section[data-v-6c05dbdd]{margin-bottom:40px}.section-title[data-v-6c05dbdd]{font-size:24px;font-weight:700;color:var(--text-primary);margin-bottom:20px}.exercise-card[data-v-6c05dbdd]{background:var(--sidebar-bg);border:1px solid var(--border);border-radius:12px;padding:30px}.question-text[data-v-6c05dbdd]{font-size:1.2rem;line-height:1.7;margin:0}.choice-grid[data-v-6c05dbdd]{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.choice-card[data-v-6c05dbdd]{border:2px solid var(--border);border-radius:12px;padding:1.5rem;cursor:pointer;transition:all .3s}.choice-card[data-v-6c05dbdd]:hover{border-color:var(--primary);box-shadow:0 4px 12px #198cff26}.choice-card.selected[data-v-6c05dbdd]{border-color:var(--primary);background:var(--sidebar-active);box-shadow:0 4px 12px #198cff33}.choice-card.disabled[data-v-6c05dbdd]{cursor:not-allowed;opacity:.7}.choice-card strong[data-v-6c05dbdd]{font-size:1.1rem;margin-right:.5rem;color:var(--primary)}.textarea-answer[data-v-6c05dbdd],.textarea-answer .input-with-keyboard[data-v-6c05dbdd]{position:relative}.textarea-answer textarea[data-v-6c05dbdd]{width:100%;padding:.75rem;box-sizing:border-box;border:2px solid var(--border);border-radius:12px;font-size:1rem;font-family:inherit}.textarea-answer textarea[data-v-6c05dbdd]:focus{border-color:var(--primary);outline:none}.keyboard-toggle-btn[data-v-6c05dbdd]{position:absolute;top:.5rem;right:.5rem;padding:.5rem 1rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:6px;cursor:pointer;font-weight:600;font-size:.9rem;transition:all .2s;box-shadow:0 2px 4px #667eea4d;z-index:1}.keyboard-toggle-btn[data-v-6c05dbdd]:hover{transform:translateY(-1px);box-shadow:0 4px 8px #667eea66}.keyboard-toggle-btn.active[data-v-6c05dbdd]{background:linear-gradient(135deg,#28a745,#20c997);box-shadow:0 2px 4px #28a7454d}.keyboard-toggle-btn[data-v-6c05dbdd]:active{transform:translateY(0)}.math-keyboard-container[data-v-6c05dbdd]{margin-top:1rem;animation:slideDown-6c05dbdd .3s ease-out}@keyframes slideDown-6c05dbdd{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.result-section[data-v-6c05dbdd]{margin-top:2rem}.result-box[data-v-6c05dbdd]{border-radius:12px;padding:1.5rem 2rem;margin-bottom:1rem}.result-box.correct[data-v-6c05dbdd]{background-color:#eaf8f0;border:2px solid var(--success)}.result-box.wrong[data-v-6c05dbdd]{background-color:#fbeeed;border:2px solid var(--danger)}.result-header[data-v-6c05dbdd]{display:flex;align-items:center;gap:10px}.result-header h3[data-v-6c05dbdd]{font-size:1.5rem;margin:0}.result-box.correct .result-header[data-v-6c05dbdd]{color:var(--success)}.result-box.wrong .result-header[data-v-6c05dbdd]{color:var(--danger)}.solution-box[data-v-6c05dbdd]{border:2px solid var(--border);border-radius:12px;padding:1.5rem 2rem;background:var(--sidebar-bg)}.solution-box h4[data-v-6c05dbdd]{font-size:1.2rem;margin-top:0;color:var(--text-primary)}.solution-box p[data-v-6c05dbdd]{margin-bottom:0;line-height:1.7}.bottom-nav[data-v-6c05dbdd]{display:flex;justify-content:space-between;padding:30px 0;margin-top:2rem;border-top:2px solid var(--border)}.nav-button[data-v-6c05dbdd]{display:flex;align-items:center;gap:10px;padding:12px 24px;border-radius:10px;border:2px solid var(--border);background:#fff;color:var(--text-primary);font-weight:600;cursor:pointer;transition:all .3s;text-decoration:none}.nav-button[data-v-6c05dbdd]:hover{border-color:var(--primary);color:var(--primary)}.nav-button.next[data-v-6c05dbdd]{background:var(--primary);border-color:var(--primary);color:#fff}@keyframes fadeInUp-6c05dbdd{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in[data-v-6c05dbdd]{animation:fadeInUp-6c05dbdd .5s ease-out}.btn[data-v-6c05dbdd]{padding:10px 24px;border-radius:24px;border:2px solid var(--primary);background:transparent;color:var(--primary);font-weight:600;font-size:14px;cursor:pointer;transition:all .3s 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rainbow-6c05dbdd{0%{background-position:0% 50%}to{background-position:200% 50%}}@keyframes glow-6c05dbdd{0%{text-shadow:0 0 10px currentColor,0 0 20px currentColor}to{text-shadow:0 0 20px currentColor,0 0 30px currentColor,0 0 40px currentColor}}@keyframes pulse-6c05dbdd{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes glitch-6c05dbdd{0%,to{transform:translate(0)}33%{transform:translate(-2px,2px)}66%{transform:translate(2px,-2px)}}.student-layout[data-v-cd2128a0]{--primary: #ed8936;--primary-light: #fbd38d;--primary-dark: #2563eb;--sidebar-bg: #fafafa;--sidebar-hover: #f3f4f6;--sidebar-active: #fef5f1;--border: #e5e7eb;--text-primary: #1f2937;--text-secondary: #6b7280;--white: #ffffff;--success: #10b981;--warning: #f59e0b;--info: #ed8936;display:flex;flex-direction:column;background:#fef5f1;color:var(--text-primary);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe 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i[data-v-cd2128a0]{font-size:2rem;display:block;margin-bottom:1rem}.loading-state h3[data-v-cd2128a0]{font-size:1.5rem;color:var(--text-primary)}.content-section[data-v-cd2128a0]{margin-bottom:40px}.section-title[data-v-cd2128a0]{font-size:24px;font-weight:700;color:var(--text-primary);margin-bottom:20px}.exercise-card[data-v-cd2128a0]{background:var(--sidebar-bg);border:1px solid var(--border);border-radius:12px;padding:30px}.question-text[data-v-cd2128a0]{font-size:1.2rem;line-height:1.7;margin:0}.choice-grid[data-v-cd2128a0]{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.choice-card[data-v-cd2128a0]{border:2px solid var(--border);border-radius:12px;padding:1.5rem;cursor:pointer;transition:all .3s}.choice-card[data-v-cd2128a0]:hover{border-color:var(--primary)}.choice-card.selected[data-v-cd2128a0]{border-color:var(--primary);background:var(--sidebar-active);box-shadow:0 4px 12px #198cff33}.choice-card strong[data-v-cd2128a0]{font-size:1.1rem;margin-right:.5rem;color:var(--primary)}.textarea-answer textarea[data-v-cd2128a0]{width:100%;padding:.75rem;box-sizing:border-box;border:2px solid var(--border);border-radius:12px;font-size:1rem;font-family:inherit}.textarea-answer textarea[data-v-cd2128a0]:focus{border-color:var(--primary);outline:none}.result-section[data-v-cd2128a0]{margin-top:2rem}.result-box[data-v-cd2128a0]{border-radius:12px;padding:1.5rem 2rem;margin-bottom:1rem}.result-box.correct[data-v-cd2128a0]{background-color:#eaf8f0;border:2px solid var(--success)}.result-box.wrong[data-v-cd2128a0]{background-color:#fbeeed;border:2px solid var(--danger)}.result-header[data-v-cd2128a0]{display:flex;align-items:center;gap:10px}.result-header h3[data-v-cd2128a0]{font-size:1.5rem;margin:0}.result-box.correct .result-header[data-v-cd2128a0]{color:var(--success)}.result-box.wrong .result-header[data-v-cd2128a0]{color:var(--danger)}.solution-box[data-v-cd2128a0]{border:2px solid var(--border);border-radius:12px;padding:1.5rem 2rem;background:var(--sidebar-bg);margin-top:1rem}.solution-box h4[data-v-cd2128a0]{font-size:1.2rem;margin-top:0;color:var(--text-primary)}.solution-box p[data-v-cd2128a0]{margin-bottom:0;line-height:1.7}.card-list[data-v-cd2128a0]{display:flex;flex-direction:column;gap:1rem;margin-top:1.5rem}.exercise-card[data-v-cd2128a0]{background-color:#fff;border:1px solid #ddd;border-radius:8px}.card-header[data-v-cd2128a0]{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;background-color:#f9f9f9;border-bottom:1px solid #eee}.card-body[data-v-cd2128a0]{padding:1.5rem}.example-box[data-v-cd2128a0]{border:1px solid var(--border);border-radius:8px;padding:1rem;background:#f9f9f9;margin-top:1rem}.example-content[data-v-cd2128a0]{margin:0}.example-list[data-v-cd2128a0]{list-style:none;padding:0;margin:0}.example-list li[data-v-cd2128a0]{padding:.5rem 0;border-bottom:1px solid #eee}.example-list li[data-v-cd2128a0]:last-child{border-bottom:none}.bottom-nav[data-v-cd2128a0]{display:flex;justify-content:space-between;padding:30px 0;margin-top:2rem;border-top:2px solid var(--border)}.nav-button[data-v-cd2128a0]{display:flex;align-items:center;gap:10px;padding:12px 24px;border-radius:10px;border:2px solid var(--border);background:#fff;color:var(--text-primary);font-weight:600;cursor:pointer;transition:all .3s;text-decoration:none}.nav-button[data-v-cd2128a0]:hover{border-color:var(--primary);color:var(--primary)}.nav-button.next[data-v-cd2128a0]{background:var(--primary);border-color:var(--primary);color:#fff}@keyframes fadeInUp-cd2128a0{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in[data-v-cd2128a0]{animation:fadeInUp-cd2128a0 .5s ease-out}.btn[data-v-cd2128a0]{padding:10px 24px;border-radius:24px;border:2px solid var(--primary);background:transparent;color:var(--primary);font-weight:600;font-size:14px;cursor:pointer;transition:all .3s 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glitch-cd2128a0{0%,to{transform:translate(0)}33%{transform:translate(-2px,2px)}66%{transform:translate(2px,-2px)}}.student-layout[data-v-15a342b3]{--primary: #ed8936;--primary-dark: #2563eb;--border: #e5e7eb;--text-primary: #1f2937;--text-secondary: #6b7280;--white: #ffffff;--success: #10b981;--danger: #ef4444;position:fixed;inset:0;display:flex;flex-direction:column;background:#fafafa;color:var(--text-primary);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.top-navbar[data-v-15a342b3]{height:56px;background:#fff;border-bottom:1px solid #e5e7eb;display:flex;align-items:center;padding:0 24px;flex-shrink:0;z-index:1000}.logo[data-v-15a342b3]{display:flex;align-items:center;gap:6px;text-decoration:none;font-size:20px;font-weight:700}.logo-text[data-v-15a342b3]{font-size:20px;font-weight:700;transition:all .3s ease;display:inline-block}.breadcrumb[data-v-15a342b3]{margin-left:32px;display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-secondary)}.breadcrumb a[data-v-15a342b3]{color:var(--primary);text-decoration:none;font-weight:500}.breadcrumb i[data-v-15a342b3]{font-size:10px;opacity:.5}.breadcrumb span[data-v-15a342b3]{font-weight:500}.top-nav-actions[data-v-15a342b3]{margin-left:auto;display:flex;gap:12px;align-items:center}.main-container-simple[data-v-15a342b3]{display:flex;flex:1;width:100%;height:calc(100vh - 60px);overflow:hidden}.content-area[data-v-15a342b3]{flex:1;width:100%;background:#fafafa;overflow-y:auto;height:100%}.page-header[data-v-15a342b3]{background:var(--white);padding:40px max(48px,5vw);border-bottom:1px solid var(--border)}.header-top[data-v-15a342b3]{display:flex;align-items:center;gap:20px;margin-bottom:32px}.header-icon[data-v-15a342b3]{width:64px;height:64px;border-radius:16px;background:linear-gradient(135deg,#ed8936,#2563eb);display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;box-shadow:0 8px 16px #3b82f64d}.header-content h1[data-v-15a342b3]{font-size:36px;font-weight:700;color:var(--text-primary);margin:0}.header-content p[data-v-15a342b3]{font-size:16px;color:var(--text-secondary);margin:4px 0 0}.stats-container[data-v-15a342b3]{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:32px}.stat-card[data-v-15a342b3]{background:#fff;border:1px solid var(--border);border-radius:12px;padding:20px;display:flex;align-items:center;gap:16px;transition:transform .2s,box-shadow .2s}.stat-card[data-v-15a342b3]:hover{transform:translateY(-4px);box-shadow:0 8px 20px 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i[data-v-0c109d7d]{font-size:32px}.avatar-overlay span[data-v-0c109d7d]{font-size:14px;font-weight:600}.avatar-info[data-v-0c109d7d]{flex:1}.avatar-info h3[data-v-0c109d7d]{margin:0 0 8px;font-size:20px;font-weight:700;color:#1e293b}.avatar-info p[data-v-0c109d7d]{margin:0 0 4px;font-size:14px;color:#64748b}.avatar-info small[data-v-0c109d7d]{display:block;font-size:12px;color:#94a3b8;margin-bottom:16px}.btn-upload[data-v-0c109d7d],.btn-remove[data-v-0c109d7d]{margin-top:12px;margin-right:12px;padding:10px 20px;border-radius:10px;font-weight:600;font-size:14px;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;gap:8px;border:none}.btn-upload[data-v-0c109d7d]{background:linear-gradient(135deg,#ed8936,#f6ad55);color:#fff;box-shadow:0 4px 12px #ed89364d}.btn-upload[data-v-0c109d7d]:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #ed893666}.btn-upload[data-v-0c109d7d]:disabled{opacity:.6;cursor:not-allowed}.btn-remove[data-v-0c109d7d]{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;box-shadow:0 4px 12px #ef44444d}.btn-remove[data-v-0c109d7d]:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ef444466}.form-grid[data-v-0c109d7d]{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.form-group[data-v-0c109d7d]{display:flex;flex-direction:column}.form-group label[data-v-0c109d7d]{font-weight:600;font-size:14px;color:#1e293b;margin-bottom:8px}.form-group input[data-v-0c109d7d],.form-group select[data-v-0c109d7d]{width:100%;padding:.75rem 1rem;box-sizing:border-box;border:2px solid rgba(237,137,54,.2);border-radius:12px;font-size:1rem;background:#fff;transition:all .3s ease}.form-group input[data-v-0c109d7d]:focus,.form-group select[data-v-0c109d7d]:focus{border-color:#ed8936;box-shadow:0 0 0 3px #ed893626;outline:none;transform:translateY(-1px)}.form-group input[data-v-0c109d7d]:disabled{background:#f3f4f6;color:#6b7280;cursor:not-allowed}.form-group small[data-v-0c109d7d]{font-size:12px;color:#6b7280;margin-top:4px}.form-actions[data-v-0c109d7d]{margin-top:1.5rem;padding-top:1.5rem;border-top:2px solid rgba(237,137,54,.1);display:flex;justify-content:flex-end}.message[data-v-0c109d7d]{padding:1rem;border-radius:16px;margin-bottom:1.5rem;font-weight:500;display:flex;align-items:flex-start;gap:12px}.message i[data-v-0c109d7d]{font-size:18px;flex-shrink:0;margin-top:2px}.message.success[data-v-0c109d7d]{background:#d1fae5;color:#1e293b;border:2px solid #6EE7B7}.message.error[data-v-0c109d7d]{background:#fef3c7;color:#1e293b;border:2px solid #fbbf24}.error-list[data-v-0c109d7d]{flex:1}.error-list div[data-v-0c109d7d]{margin-bottom:4px}.error-list div[data-v-0c109d7d]:last-child{margin-bottom:0}.password-requirements-info[data-v-0c109d7d]{display:flex;align-items:center;gap:10px;padding:14px 18px;background:#fef5f1;border:2px solid 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