:root {
            --primary-bg: #f8fafc;
            --sidebar-bg: #ffffff;
            --text-main: #1e293b;
            --text-light: #64748b;
            --accent-teal: #0ea5e9;
            --border-color: #e2e8f0;
            --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --card-hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Vazirmatn', sans-serif; }
        body { background-color: var(--primary-bg); color: var(--text-main); display: flex; height: 100vh; overflow: hidden; }

        /* --- Sidebar --- */
        .sidebar { width: 260px; background-color: var(--sidebar-bg); border-left: 1px solid var(--border-color); display: flex; flex-direction: column; padding: 20px; flex-shrink: 0; }
        .brand-logo { font-size: 22px; font-weight: 800; color: var(--accent-teal); display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 40px; padding-bottom: 20px; border-bottom: 1px solid #f1f5f9; }
        .nav-menu { display: flex; flex-direction: column; gap: 10px; flex: 1; }
        .nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 15px; border-radius: 12px; color: var(--text-light); font-weight: 500; font-size: 14px; cursor: pointer; text-decoration: none; }
        .nav-item.active { background-color: #f0f9ff; color: var(--accent-teal); }

        /* --- Main Content --- */
        .main-content { flex: 1; padding: 30px; overflow-y: auto; display: flex; flex-direction: column; gap: 20px; }
        .page-header { margin-bottom: 10px; }
        .page-title { font-size: 24px; font-weight: 900; color: #0f172a; border-right: 5px solid var(--accent-teal); padding-right: 15px; }
        
        /* --- Alert Box --- */
        .notice-card { background: #fff1f2; border: 1px solid #fda4af; border-radius: 16px; padding: 20px; margin-bottom: 20px; color: #9f1239; line-height: 2; font-size: 14px; box-shadow: var(--card-shadow); }
        .notice-card h4 { margin-bottom: 10px; display: flex; align-items: center; gap: 8px; font-weight: 800; }
        .notice-card ul { list-style: none; padding-right: 5px; }

        /* --- Grid & Cards --- */
        .cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 25px; padding-bottom: 50px; }
        .info-card { background: white; border-radius: 20px; box-shadow: var(--card-shadow); border: 1px solid var(--border-color); overflow: hidden; transition: 0.3s; display: flex; flex-direction: column; }
        .info-card:hover { transform: translateY(-5px); box-shadow: var(--card-hover-shadow); }
        .card-top-accent { height: 6px; width: 100%; }
        
        .card-header { padding: 20px; border-bottom: 1px solid #f1f5f9; background: #fff; display: flex; align-items: center; gap: 12px; }
        .card-header i { color: var(--accent-teal); background: #f0f9ff; padding: 10px; border-radius: 12px; font-size: 18px; }
        .card-header h3 { font-size: 17px; font-weight: 800; color: #1e293b; }

        .item-list { list-style: none; padding: 15px 20px 25px 20px; }
        .item-row { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid #f8fafc; font-size: 14.5px; color: #475569; }
        .item-row:last-child { border-bottom: none; }
        .item-dot { width: 6px; height: 6px; background: #cbd5e1; border-radius: 50%; flex-shrink: 0; }
        
        /* Colors per Category */
        .color-a .card-top-accent { background: linear-gradient(90deg, #0ea5e9, #3b82f6); }
        .color-b .card-top-accent { background: linear-gradient(90deg, #10b981, #059669); }
        .color-c .card-top-accent { background: linear-gradient(90deg, #f59e0b, #d97706); }
        .color-d .card-top-accent { background: linear-gradient(90deg, #8b5cf6, #7c3aed); }
        .color-e .card-top-accent { background: linear-gradient(90deg, #f43f5e, #e11d48); }

        @media (max-width: 768px) {
            .sidebar { display: none; }
            .cards-grid { grid-template-columns: 1fr; }
        }