* {
            padding: 0;
            margin: 0;
            box-sizing: border-box;
            font-family: "Roboto", sans-serif;
        }

        :root {
            --pandacolor: #ff2b85;
            --background: #f8f9fa;
            --border: #e9ecef;
            --fontcol: #212529;
            --card-bg: #ffffff;
            --success: #28a745;
            --warning: #ffc107;
            --danger: #dc3545;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        body {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            background-color: var(--background);
            color: var(--fontcol);
            padding: 20px;
            line-height: 1.6;
        }

        header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .logo-container {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--pandacolor), #ff6b9d);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 24px;
        }

        .head-text {
            display: flex;
            flex-direction: column;
        }

        .header-title {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--pandacolor);
        }

        .header-subtitle {
            font-style: italic;
            color: #6c757d;
            font-size: 0.95rem;
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
            width: 100%;
        }

        .title-section {
            text-align: center;
            margin-bottom: 2rem;
        }

        .title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--pandacolor);
            margin-bottom: 0.5rem;
        }

        .subtitle {
            color: #6c757d;
            font-size: 1rem;
        }

        .input-section {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 2rem;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }

        .input-group {
            margin-bottom: 1.5rem;
        }

        .input-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: #495057;
        }

        .input-group input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .input-group input:focus {
            outline: none;
            border-color: var(--pandacolor);
            box-shadow: 0 0 0 3px rgba(255, 43, 133, 0.2);
        }

        .calculate {
            width: 100%;
            padding: 14px;
            background: var(--pandacolor);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .calculate:hover {
            background: #e01a6d;
            transform: translateY(-2px);
        }

        .final-output {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 2rem;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }

        .result-card {
            background: var(--border);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .result-label {
            font-weight: 700;
            font-size: 1.1rem;
            color: #495057;
        }

        .result-value {
            font-size: 1.3rem;
            font-weight: 700;
        }

        .remit-value {
            color: var(--pandacolor);
        }

        .earn-value {
            color: var(--success);
        }

        .error-message {
            background: #f8d7da;
            color: #721c24;
            padding: 12px;
            border-radius: 8px;
            margin-top: 1rem;
            display: none;
        }

        .guide {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .guide-card {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: var(--shadow);
        }

        .guide-title {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--pandacolor);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .guide-icon {
            width: 24px;
            height: 24px;
            background: var(--pandacolor);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 14px;
        }

        .guide-content {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .guide-text {
            color: #6c757d;
        }

        .guide-image {
            width: 100%;
            height: 150px;
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #adb5bd;
            font-weight: 500;
            border: 2px dashed #dee2e6;
        }

        footer {
            margin-top: auto;
            padding: 1.5rem 0;
            text-align: center;
            color: #6c757d;
            font-size: 0.9rem;
            border-top: 1px solid var(--border);
        }

        .footer-title {
            font-weight: 700;
            color: var(--pandacolor);
            margin-bottom: 0.5rem;
        }

        /* Responsive adjustments */
        @media (max-width: 600px) {
            header {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
            
            .input-section, .final-output {
                padding: 1.5rem;
            }
            
            .title {
                font-size: 1.5rem;
            }
            
            .result-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            
            .guide {
                grid-template-columns: 1fr;
            }
        }