.salary-dividend-calculator {
            background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%);
            border-radius: 20px;
            padding: 30px 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .salary-dividend-calculator h2 {
            text-align: center;
            color: #ffffff;
            margin-bottom: 35px;
            font-size: 2rem;
            font-weight: 700;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }

        .calc-input-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .calc-input-group {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
            border: 1px solid rgba(255, 255, 255, 0.5);
            transition: all 0.3s ease;
        }

        .calc-input-group:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
        }

        .calc-group-title {
            color: #1a237e;
            margin-bottom: 20px;
            font-size: 1.25rem;
            font-weight: 600;
            border-bottom: 2px solid rgba(26, 35, 126, 0.1);
            padding-bottom: 10px;
        }

        .calc-form-group {
            margin-bottom: 18px;
            position: relative;
        }

        .calc-form-group label {
            display: inline-block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 500;
            font-size: 0.9rem;
        }

        .calc-input, .calc-select {
            width: 100%;
            padding: 12px 15px;
            padding-right: 40px; /* 단위 표시 공간 */
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            background: #fff;
            transition: all 0.3s ease;
            box-sizing: border-box;
        }
        
        .calc-input:focus, .calc-select:focus {
            outline: none;
            border-color: #8ec5fc;
            box-shadow: 0 0 0 3px rgba(142, 197, 252, 0.4);
        }

        .input-unit {
            position: absolute;
            right: 15px;
            top: 38px;
            color: #888;
            font-size: 0.9rem;
        }

        .tooltip {
            display: inline-block;
            margin-left: 5px;
            width: 16px;
            height: 16px;
            background-color: #aaa;
            color: white;
            border-radius: 50%;
            text-align: center;
            font-size: 12px;
            line-height: 16px;
            cursor: help;
        }
        
        .calc-button {
            width: 100%;
            padding: 16px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(118, 75, 162, 0.3);
        }
        
        .calc-button:before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 300%;
            height: 300%;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            transform: translate(-50%, -50%) scale(0);
            transition: all 0.5s ease;
        }

        .calc-button:hover:before {
            transform: translate(-50%, -50%) scale(1);
        }

        .calc-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(118, 75, 162, 0.4);
        }
        
        .calc-button .btn-text { transition: opacity 0.2s; }
        .calc-button.loading .btn-text { opacity: 0; }
        .calc-button .loader {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 20px;
            height: 20px;
            border: 2px solid #fff;
            border-top-color: transparent;
            border-radius: 50%;
            opacity: 0;
            transition: opacity 0.2s;
            animation: spin 1s linear infinite;
        }
        .calc-button.loading .loader { opacity: 1; }

        @keyframes spin {
            to { transform: translate(-50%, -50%) rotate(360deg); }
        }

        .results-wrapper {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
            display: none; /* Initially hidden */
        }
        .results-wrapper.visible {
            opacity: 1;
            transform: translateY(0);
            display: block;
        }

        .calc-results {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }

        .calc-result-card {
            background: white;
            padding: 25px;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            border: 1px solid #eee;
            transition: all 0.3s ease;
        }
        
        .calc-result-card.highlight {
            border-color: #667eea;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.25);
            transform: scale(1.03);
        }

        .calc-result-title {
            color: #1a237e;
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .calc-result-amount {
            font-size: 1.8rem;
            font-weight: 700;
            color: #333;
            margin-bottom: 8px;
            color: #667eea;
        }

        .calc-result-detail {
            font-size: 0.85rem;
            color: #666;
            line-height: 1.6;
            text-align: left;
            padding-left: 10px;
        }
        
        .calc-charts {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 30px;
        }

        .calc-chart-container {
            background: white;
            padding: 20px;
            border-radius: 15px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            position: relative;
            height: 350px;
        }

        .calc-chart-title {
            text-align: center;
            color: #1a237e;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 15px;
        }
        
        .calc-comment {
            text-align: center;
            font-size: 1rem;
            font-weight: 500;
            padding: 15px;
            background: rgba(255, 255, 255, 0.7);
            border-radius: 10px;
            border-left: 5px solid #667eea;
        }
        
        .info-section {
            margin-top: 30px;
            padding: 20px;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 10px;
            font-size: 0.8rem;
            color: #555;
            line-height: 1.6;
        }
        .info-section h4 {
            font-weight: 600;
            color: #1a237e;
            margin-bottom: 10px;
        }
        .info-section ul {
            padding-left: 20px;
            margin: 0;
        }
        
        @media (max-width: 900px) {
            .salary-dividend-calculator { padding: 20px; }
        }

        @media (max-width: 768px) {
            .calc-charts { grid-template-columns: 1fr; }
            .calc-chart-container { height: 300px; }
        }