*{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,-apple-system,sans-serif}
        :root{--primary:#3498db;--secondary:#2c3e50;--accent:#e74c3c;--success:#2ecc71;--light:#f8f9fa;--dark:#212529;--card-bg:#fff}
        body{background-color:#f0f2f5;color:var(--dark);line-height:1.5;min-height:100vh;padding-bottom:20px}
        .container{width:100%;max-width:1200px;margin:0 auto;padding:10px}
        header{background:var(--secondary);color:#fff;padding:10px 0;position:sticky;top:0;z-index:100}
        .header-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
        .logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.2rem}
        .menu-toggle{display:none;background:transparent;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:5px}
        nav ul{display:flex;list-style:none;gap:10px}
        nav a{color:#fff;text-decoration:none;padding:6px 10px;border-radius:4px;font-size:0.9rem}
        nav a:hover,nav a.active{background:rgba(255,255,255,0.2)}
        .hero{text-align:center;padding:20px 10px;background:#fff;border-radius:8px;margin:15px 0}
        .hero h2{font-size:1.5rem;margin-bottom:8px;color:var(--secondary)}
        .hero p{font-size:1rem;max-width:700px;margin:0 auto 15px;color:#555}
        .calculator-card{background:var(--card-bg);border-radius:8px;padding:20px;margin:15px auto;max-width:900px;border:1px solid #ddd}
        .calculator-card h2{text-align:center;margin-bottom:15px;color:var(--secondary);font-size:1.4rem;padding-bottom:8px;border-bottom:2px solid var(--primary)}
        .input-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:15px;margin-bottom:15px}
        .input-group{margin-bottom:10px}
        .input-group label{display:block;margin-bottom:5px;font-weight:500;color:#555}
        .input-group input,.input-group select{width:100%;padding:10px;border:1px solid #ccc;border-radius:4px;font-size:1rem;background:#f8f9fa}
        .btn{display:inline-block;background:var(--primary);color:#fff;padding:10px 15px;border:none;border-radius:4px;font-size:1rem;font-weight:600;cursor:pointer;text-align:center;margin:5px}
        .btn:hover{background:#2980b9}
        .btn:focus {
            outline: 3px solid #005fcc;
            outline-offset: 2px;
        }
        .btn-accent{background:var(--accent)}
        .btn-accent:hover{background:#c0392b}
        .btn-success{background:var(--success)}
        .btn-success:hover{background:#27ae60}
        .btn-block{display:block;width:100%}
        .button-group{display:flex;justify-content:center;gap:10px;margin:15px 0;flex-wrap:wrap}
        .courses-section{background:#f8f9fa;border-radius:8px;padding:15px;margin-top:15px;border:1px solid #eee}
        .courses-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid #ddd;flex-wrap:wrap;gap:8px}
        .courses-header h3{color:var(--secondary);font-size:1.1rem}
        .course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
        .course-card{background:#fff;border-radius:6px;padding:12px;border:1px solid #eee}
        .course-card h4{margin-bottom:8px;color:var(--secondary);font-size:1rem}
        .course-inputs{display:grid;gap:8px}
        .add-course-btn{display:flex;align-items:center;justify-content:center;gap:5px;background:rgba(52,152,219,0.1);border:1px dashed var(--primary);border-radius:6px;padding:12px;text-align:center;color:var(--primary);font-weight:600;cursor:pointer;margin-top:12px;font-size:0.9rem}
        .add-course-btn:focus {
            outline: 3px solid #005fcc;
            outline-offset: 2px;
        }
        .result-section{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:15px;margin-top:20px}
        .result-card{background:#fff;border-radius:8px;padding:15px;text-align:center;border-top:4px solid var(--primary)}
        .result-card.semester{border-top-color:var(--success)}
        .result-card.cumulative{border-top-color:var(--accent)}
        .result-card h3{margin-bottom:8px;color:var(--secondary);font-size:1.1rem}
        .result-value{font-size:2rem;font-weight:700;color:var(--primary);margin:5px 0}
        .result-card.semester .result-value{color:var(--success)}
        .result-card.cumulative .result-value{color:var(--accent)}
        .result-label{font-size:0.9rem;color:#666;margin-top:5px}
        .progress-container{height:8px;background:#f0f0f0;border-radius:4px;margin:10px 0;overflow:hidden}
        .progress-bar{height:100%;background:var(--primary);border-radius:4px}
        .result-card.semester .progress-bar{background:var(--success)}
        .result-card.cumulative .progress-bar{background:var(--accent)}
        .breakdown-section{background:#fff;border-radius:8px;padding:15px;margin-top:15px;border:1px solid #eee}
        .breakdown-section h3{margin-bottom:10px;color:var(--secondary);font-size:1.2rem}
        .table-responsive{overflow-x:auto;margin-bottom:10px}
        .breakdown-table{width:100%;min-width:500px;border-collapse:collapse;margin:10px 0}
        .breakdown-table th{background:var(--primary);color:#fff;padding:8px 10px;text-align:left;font-weight:600}
        .breakdown-table td{padding:8px 10px;border-bottom:1px solid #eee}
        .breakdown-table tr:nth-child(even){background:#f8f9fa}
        .calculation-steps{background:#f1f8ff;border-radius:6px;padding:12px;margin:10px 0;font-size:0.9rem}
        .formula{font-weight:700;color:var(--primary)}
        .college-info{background:#fff;border-radius:6px;padding:12px;margin:10px 0;border:1px solid #eee}
        .college-info h4{margin-bottom:8px;color:var(--secondary)}
        .college-scale{display:inline-block;background:var(--primary);color:#fff;padding:3px 6px;border-radius:3px;font-size:0.8rem;margin-left:5px}
        .article-section{background:#fff;border-radius:8px;padding:20px;margin:20px auto;max-width:900px;border:1px solid #eee}
        .article-header{text-align:center;margin-bottom:20px}
        .article-header h2{font-size:1.4rem;color:var(--secondary);padding-bottom:8px;border-bottom:2px solid var(--primary);margin-bottom:10px}
        .article-section h3{margin:15px 0 10px;color:var(--secondary);font-size:1.2rem;padding-bottom:5px;border-bottom:1px solid #eee}
        .article-section p{margin-bottom:12px;color:#444}
        .article-section strong{color:var(--secondary)}
        .article-section table{width:100%;min-width:500px;border-collapse:collapse;margin:15px 0}
        .article-section th{background:var(--primary);color:#fff;padding:8px 10px;text-align:left;font-weight:600}
        .article-section td{padding:8px 10px;border-bottom:1px solid #eee}
        .article-section tr:nth-child(even){background:#f8f9fa}
        .article-section ul{margin:15px 0;padding-left:20px}
        .article-section li{margin-bottom:8px}
        .highlight-box{background:#f1f8ff;padding:15px;border-radius:6px;margin:15px 0;border-left:3px solid var(--primary)}
        .info-card{background:#e3f2fd;border-radius:6px;padding:12px;margin:12px 0}
        .info-card h4{margin-bottom:5px;color:var(--secondary)}
        footer{background:var(--secondary);color:#fff;padding:20px 0 10px;margin-top:30px}
        .footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:20px}
        .footer-column h4{font-size:1.1rem;margin-bottom:12px;padding-bottom:5px;border-bottom:2px solid var(--primary)}
        .footer-column p{margin-bottom:8px;color:#ddd;font-size:0.9rem}
        .footer-column ul{list-style:none}
        .footer-column ul li{margin-bottom:8px}
        .footer-column ul li a{color:#ddd;text-decoration:none;font-size:0.9rem}
        .footer-column ul li a:hover{color:var(--primary)}
        .social-icons{display:flex;gap:12px;margin-top:12px}
        .social-icons a{color:#fff;text-decoration:none;transition:color .3s}
        .social-icons a:hover{color:var(--primary)}
        .copyright{text-align:center;padding-top:10px;border-top:1px solid rgba(255,255,255,0.1);color:#aaa;font-size:0.85rem}
        .mobile-table-container{overflow-x:auto;margin:15px 0;border-radius:8px;border:1px solid #ddd}
        .mobile-table{width:100%;min-width:500px;border-collapse:collapse}
        .mobile-table th{background-color:var(--primary);color:#fff;padding:10px;text-align:left;font-weight:600}
        .mobile-table td{padding:10px;border-bottom:1px solid #ddd}
        .mobile-table tr:nth-child(even){background-color:#f8f9fa}
        .mobile-table tr:last-child td{border-bottom:none}
        
        /* Accessibility improvements */
        .skip-link {
            position: absolute;
            top: -40px;
            left: 0;
            background: #000;
            color: white;
            padding: 8px;
            z-index: 1000;
            text-decoration: none;
        }
        .skip-link:focus {
            top: 0;
        }
        input:focus, select:focus {
            outline: 3px solid #005fcc;
            outline-offset: 2px;
        }
        [aria-invalid="true"] {
            border: 2px solid #e74c3c;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }
        @media (max-width:768px){.header-content{flex-wrap:wrap}.menu-toggle{display:block}nav{width:100%;max-height:0;overflow:hidden;transition:max-height .3s ease}nav.active{max-height:300px}nav ul{flex-direction:column;gap:5px;padding:10px 0}nav a{display:block;padding:8px 10px}.input-section{grid-template-columns:1fr}.button-group{flex-direction:column}.course-grid{grid-template-columns:1fr}.result-section{grid-template-columns:1fr}.footer-content{grid-template-columns:1fr}.mobile-table{font-size:14px}.mobile-table th,.mobile-table td{padding:8px}.mobile-table th:nth-child(2),.mobile-table td:nth-child(2){min-width:100px}.mobile-table th:nth-child(3),.mobile-table td:nth-child(3){min-width:120px}}
        @media (max-width:480px){.calculator-card{padding:15px}.article-section{padding:15px}.breakdown-table{min-width:400px}.article-section table{min-width:400px}.mobile-table{font-size:12px}.mobile-table th,.mobile-table td{padding:6px}.mobile-table th:nth-child(2),.mobile-table td:nth-child(2){min-width:80px}.mobile-table th:nth-child(3),.mobile-table td:nth-child(3){min-width:100px}}