@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--primary-blue: #2563eb;--secondary-green: #10b981;--warm-orange: #f97316;--soft-purple: #8b5cf6;--background-light: #f9fafb;--text-primary: #111827;--text-secondary: #6b7280;--border-color: #e5e7eb;--success: #22c55e;--warning: #eab308;--error: #ef4444;--headmaster-bg: #eff6ff;--activity-bg: #f0fdf4}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--background-light);color:var(--text-primary)}button{font-family:inherit}.heading-large{font-size:1.375rem;font-weight:700}.heading-medium{font-size:1rem;font-weight:600}.body-text{font-size:.8125rem;line-height:1.5}.small-text{font-size:.6875rem;color:var(--text-secondary)}.chat-message{padding:8px 12px;margin:5px 0;border-radius:10px;max-width:80%;white-space:pre-wrap;font-size:.8125rem;line-height:1.5}.message-headmaster{background:var(--headmaster-bg);margin-right:auto}.message-student{background:var(--primary-blue);color:#fff;margin-left:auto}.activity-card{border:2px solid var(--border-color);border-radius:12px;padding:16px;margin:8px 0;cursor:pointer;transition:all .3s ease;background:#fff}.activity-card:hover{border-color:var(--primary-blue);box-shadow:0 6px 16px #2563eb26}.score-badge{display:inline-block;padding:3px 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var(--border-color);border-radius:8px;font-weight:600;font-size:.8125rem;cursor:pointer;transition:all .2s ease}.btn-secondary:hover{border-color:var(--primary-blue);color:var(--primary-blue)}.btn-secondary:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{width:100%;padding:8px 10px;border-radius:6px;border:1px solid var(--border-color);background:#fff;font-family:inherit;font-size:.8125rem;transition:border .2s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary-blue);box-shadow:0 0 0 4px #2563eb1a}label{font-weight:600;display:block;margin-bottom:6px}.form-grid{display:grid;gap:20px}.checkbox-group,.radio-group{display:grid;gap:10px}.checkbox-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.checkbox-item,.radio-item{display:flex!important;align-items:center;gap:7px;padding:8px 10px;border:1px solid var(--border-color);border-radius:6px;cursor:pointer;transition:all .2s 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