@import"https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&display=swap";:root{--primary: #667eea;--primary-hover: #764ba2;--primary-light: rgba(102, 126, 234, .08);--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--accent: #00d4ff;--secondary: #6b7280;--success: #10b981;--success-bright: #00ff88;--warning: #f59e0b;--danger: #ef4444;--bg: #f4f5f9;--bg-card: #ffffff;--text: #111827;--text-secondary: #6b7280;--border: #e5e7eb;--sidebar-bg: #0a0e27;--sidebar-inner-bg: #1a1f3a;--sidebar-text: #c7d2fe;--sidebar-active: #667eea;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 16px rgba(102, 126, 234, .14);--shadow-glow: 0 0 20px rgba(102, 126, 234, .25)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;font-family:inherit;transition:border-color .2s;outline:none}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #667eea26}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .2s;text-decoration:none}.btn-primary{background:var(--primary-gradient);color:#fff}.btn-primary:hover{background:linear-gradient(135deg,#764ba2,#667eea);box-shadow:0 4px 14px #667eea66;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0);box-shadow:none}.btn-primary:disabled{background:#667eea61;cursor:not-allowed;transform:none;box-shadow:none}.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-accent{background:#0891b2;color:#fff}.btn-accent:hover{background:#0e7490}.btn-accent:disabled{background:#67e8f9;cursor:not-allowed}.btn-sm{padding:6px 12px;font-size:13px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:border-color .2s,box-shadow .2s}.card:hover{border-color:#667eea47;box-shadow:var(--shadow-lg)}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:6px;font-size:14px;font-weight:500;color:var(--text)}.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:9999px;font-size:12px;font-weight:500}.badge-admin{background:#fef3c7;color:#92400e}.badge-instructor{background:#dbeafe;color:#1e40af}.badge-student{background:#d1fae5;color:#065f46}.alert{padding:12px 16px;border-radius:var(--radius);font-size:14px;margin-bottom:16px}.alert-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.alert-success{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.table-wrapper{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--border)}th{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);background:var(--bg)}tr:hover td{background:#667eea0f}code{font-family:JetBrains Mono,Fira Code,monospace;font-size:.875em;color:var(--accent);background:#00d4ff1a;padding:.15em .45em;border-radius:4px}pre{background:#1a1f3a;border-left:4px solid var(--accent);border-radius:var(--radius);padding:16px 20px;overflow-x:auto;color:#e8e8e8;font-family:JetBrains Mono,Fira Code,monospace;font-size:14px;box-shadow:0 6px 24px #00000047;margin:12px 0}pre code{background:transparent;color:inherit;padding:0}.btn-accent{background:linear-gradient(135deg,#00d4ff,#0891b2);color:#0a0e27;font-weight:600}.btn-accent:hover{background:linear-gradient(135deg,#0891b2,#00d4ff);box-shadow:0 4px 14px #00d4ff59;transform:translateY(-1px)}.btn-accent:disabled{background:#00d4ff4d;cursor:not-allowed;transform:none;box-shadow:none}.text-gradient{background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.neural-box{background:linear-gradient(135deg,#667eea1a,#00d4ff0d);border:1px solid rgba(102,126,234,.35);border-radius:10px;padding:16px 20px;box-shadow:0 4px 16px #667eea1f}.highlight-box{background:#10b98114;border-left:4px solid var(--success-bright);padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0}.warning-box{background:#f59e0b14;border-left:4px solid var(--warning);padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0}