:root {
            --gold-primary: #D4AF37;
            --gold-secondary: #FCC201;
            --gold-light: #FFDF00;
            --gold-gradient: linear-gradient(135deg, #D4AF37 0%, #FCC201 100%);
            --silver-primary: #C0C0C0;
            --silver-secondary: #E5E5E5;
            --silver-gradient: linear-gradient(135deg, #C0C0C0 0%, #E5E5E5 100%);
            --dark-blue: #1A202C;
            --charcoal: #2D3748;
            --light-gray: #F7FAFC;
            --off-white: #F8F9FA;
            --glow-gold: 0 0 15px rgba(212, 175, 55, 0.5);
            --glow-silver: 0 0 15px rgba(192, 192, 192, 0.5);
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            color: #1A202C;
            background: #F9FAFB;
            line-height: 1.6;
        }
        
        h1, h2, h3, h4, h5 {
            font-family: 'Playfair Display', serif;
        }
        
        /* Utility Classes */
        .gold-gradient {
            background: var(--gold-gradient);
        }
        
        .silver-gradient {
            background: var(--silver-gradient);
        }
        
        .gold-text {
            color: var(--gold-primary);
        }
        
        .silver-text {
            color: var(--silver-primary);
        }
        
        .elegant-shadow {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        
        .premium-card {
            border-radius: 12px;
            background: white;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        
        .premium-card:hover {
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
            transform: translateY(-5px);
        }
        
        /* Header Styles */
        .header-blur {
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        
        /* Hero Section */
        .hero-container {
            background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-pattern {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 25px 25px, rgba(212, 175, 55, 0.1) 2%, transparent 0%),
                radial-gradient(circle at 75px 75px, rgba(192, 192, 192, 0.1) 2%, transparent 0%);
            background-size: 100px 100px;
            z-index: 1;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
        }
        
        /* Calculator Styles */
        .calculator-container {
            position: relative;
            z-index: 10;
        }
        
        .tab-active {
            border-bottom: 3px solid var(--gold-primary);
            color: var(--gold-primary);
            font-weight: 600;
        }
        
        .tab-active.silver {
            border-bottom: 3px solid var(--silver-primary);
            color: var(--silver-primary);
        }
        
          .input-field {
    border: 2px solid #E2E8F0;
    border-radius: 8px;
    padding: 12px 16px 12px 32px; /* top right bottom left (64px = pl-16) */
    transition: all 0.3s ease;
    width: 100%;
}

        
        .input-field:focus {
            border-color: var(--gold-primary);
            box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
            outline: none;
        }
        
        .silver-active .input-field:focus {
            border-color: var(--silver-primary);
            box-shadow: 0 0 0 2px rgba(192, 192, 192, 0.2);
        }
        
        .btn-calculate-gold {
            background: var(--gold-gradient);
            color: white;
            transition: all 0.3s ease;
            border-radius: 8px;
            font-weight: 600;
            padding: 12px 24px;
        }
        
        .btn-calculate-gold:hover {
            box-shadow: var(--glow-gold);
            transform: translateY(-2px);
        }
        
        .btn-calculate-silver {
            background: var(--silver-gradient);
            color: #2D3748;
            transition: all 0.3s ease;
            border-radius: 8px;
            font-weight: 600;
            padding: 12px 24px;
        }
        
        .btn-calculate-silver:hover {
            box-shadow: var(--glow-silver);
            transform: translateY(-2px);
        }
        
        /* Result Container Animation */
        @keyframes resultFadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .result-animation {
            animation: resultFadeIn 0.5s ease forwards;
        }
        
        /* Price Chart */
        .chart-container {
            height: 300px;
            position: relative;
        }
        
        /* Features Section */
        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            background: var(--gold-gradient);
        }
        
        /* Testimonials */
        .testimonial-card {
            position: relative;
            background: white;
            border-radius: 12px;
            padding: 25px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }
        
        .quotation-mark {
            position: absolute;
            top: -15px;
            left: 20px;
            font-size: 80px;
            color: rgba(212, 175, 55, 0.1);
            font-family: 'Playfair Display', serif;
        }
        
        /* FAQ Section */
        .faq-item {
            border-bottom: 1px solid #E2E8F0;
            padding: 20px 0;
        }
        
        .faq-question {
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
        }
        
        .faq-answer {
            margin-top: 15px;
            display: none;
            padding-left: 5px;
            color: #4A5568;
        }
        
        /* Footer */
        .footer {
            background: #1A202C;
            color: #E2E8F0;
        }
        
        .footer a {
            color: #E2E8F0;
            transition: color 0.3s ease;
        }
        
        .footer a:hover {
            color: var(--gold-primary);
        }
        
        /* Responsive Adjustments */
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            
            .calculator-tabs {
                flex-direction: column;
            }
            
            .calculator-tab {
                width: 100%;
                text-align: center;
                margin-bottom: 10px;
            }
        }
        
        /* Input Group */
        .input-group {
            position: relative;
            display: flex;
            border: 2px solid #E2E8F0;
            border-radius: 8px;
            overflow: hidden;
        }
        
        .input-group input {
            border: none;
            flex: 1;
            padding: 12px 16px;
        }
        
        .input-group input:focus {
            outline: none;
        }
        
        .input-group select {
            border: none;
            background: #F1F5F9;
            padding: 12px 16px;
            border-left: 2px solid #E2E8F0;
            min-width: 100px;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%234A5568' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: calc(100% - 12px) center;
            padding-right: 32px;
        }
        
        .input-group select:focus {
            outline: none;
        }
        
        .input-group:focus-within {
            border-color: var(--gold-primary);
            box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.2);
        }
        
        .silver-active .input-group:focus-within {
            border-color: var(--silver-primary);
            box-shadow: 0 0 0 2px rgba(192, 192, 192, 0.2);
        }
        
        /* Price Chart Styles */
        .chart-line {
            fill: none;
            stroke: var(--gold-primary);
            stroke-width: 2;
        }
        
        .silver-chart .chart-line {
            stroke: var(--silver-primary);
        }
        
        .chart-area {
            fill: url(#goldGradient);
            opacity: 0.2;
        }
        
        .silver-chart .chart-area {
            fill: url(#silverGradient);
        }
        
        .chart-dot {
            fill: var(--gold-primary);
        }
        
        .silver-chart .chart-dot {
            fill: var(--silver-primary);
        }
        
        .chart-grid {
            stroke: #E2E8F0;
            stroke-width: 1;
        }
        
        /* Tooltip */
        .tooltip {
            position: relative;
            display: inline-block;
            cursor: help;
        }
        
        .tooltip .tooltip-text {
            visibility: hidden;
            width: 200px;
            background-color: #2D3748;
            color: #fff;
            text-align: center;
            border-radius: 6px;
            padding: 8px;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            transform: translateX(-50%);
            opacity: 0;
            transition: opacity 0.3s;
            font-size: 0.875rem;
        }
        
        .tooltip:hover .tooltip-text {
            visibility: visible;
            opacity: 1;
        }