* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --white: #ffffff;
            --off-white: #fafafa;
            --light-gray: #f5f5f5;
            --orange: #ff6b35;
            --orange-light: #ff8c61;
            --orange-glow: rgba(255, 107, 53, 0.2);
            --text-dark: #1a1a1a;
            --text-gray: #6b7280;
            --border-light: #e8e8e8;
            --green: #10b981;
            --red: #ef4444;
            --blue: #3b82f6;
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08);
        }

        body.dark-theme {
            --white: #0f0f14;
            --off-white: #1a1a22;
            --light-gray: #252530;
            --text-dark: #ffffff;
            --text-gray: #b0b0c0;
            --border-light: #2a2a35;
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
        }

        body {
            font-family: 'General Sans', sans-serif;
            background: var(--off-white);
            color: var(--text-dark);
            transition: background-color 0.3s, color 0.3s;
        }

        /* Navigation */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            padding: 20px 60px;
            transition: background-color 0.3s;
        }

        body.dark-theme nav {
            background: rgba(15, 15, 20, 0.95);
        }

        .theme-toggle {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 2px solid var(--border-light);
            background: var(--white);
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }

        .theme-toggle:hover {
            transform: rotate(180deg);
            border-color: var(--orange);
        }

        /* Main Content */
        .main-content {
            margin-top: 100px;
            padding: 40px 20px 0;
        }

        .payment-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 400px;
            gap: 30px;
        }

        .payment-section {
            background: var(--white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-md);
        }

        .section-title {
            font-family: 'Cabinet Grotesk', sans-serif;
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 25px;
        }

        /* Currency Selector */
        .currency-selector {
            margin-bottom: 30px;
            padding: 25px;
            background: var(--off-white);
            border-radius: 16px;
        }

        .currency-selector h4 {
            margin-bottom: 15px;
            font-size: 16px;
            font-weight: 700;
        }

        .currency-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 15px;
        }

        .currency-select {
            position: relative;
        }

        .currency-select select {
            width: 100%;
            padding: 14px 18px 14px 50px;
            border: 2px solid var(--border-light);
            border-radius: 12px;
            font-size: 15px;
            font-family: 'General Sans', sans-serif;
            font-weight: 600;
            cursor: pointer;
            appearance: none;
            background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E") no-repeat right 15px center;
        }

        .currency-select select:focus {
            outline: none;
            border-color: var(--orange);
        }

        .currency-flag {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 24px;
        }

        .exchange-rate {
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 14px 18px;
            background: var(--white);
            border: 2px solid var(--border-light);
            border-radius: 12px;
            font-size: 13px;
        }

        .exchange-rate-value {
            font-weight: 700;
            color: var(--green);
        }

        .exchange-rate-label {
            font-size: 11px;
            color: var(--text-gray);
        }

        /* Package Selection */
        .package-select {
            margin-bottom: 30px;
        }

        .package-select label {
            font-weight: 600;
            margin-bottom: 10px;
            display: block;
        }

        .package-select select,
        .package-select input {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--border-light);
            border-radius: 12px;
            font-size: 15px;
            font-family: 'General Sans', sans-serif;
            background: var(--white);
            color: var(--text-dark);
        }

        .package-select select:focus,
        .package-select input:focus {
            outline: none;
            border-color: var(--orange);
        }

        .price-display {
            margin-top: 15px;
            padding: 20px;
            background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
            border-radius: 12px;
            color: white;
        }

        .price-display h4 {
            font-size: 14px;
            opacity: 0.9;
            margin-bottom: 5px;
        }

        .price-display .amount {
            font-family: 'Cabinet Grotesk', sans-serif;
            font-size: 42px;
            font-weight: 800;
        }

        .price-breakdown {
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid rgba(255, 255, 255, 0.3);
            font-size: 14px;
            opacity: 0.9;
        }

        /* Payment Methods */
        .payment-methods {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 30px;
        }

        .payment-method {
            padding: 20px;
            border: 2px solid var(--border-light);
            border-radius: 16px;
            cursor: pointer;
            transition: all 0.3s;
            text-align: center;
        }

        .payment-method:hover {
            border-color: var(--orange);
            transform: translateY(-2px);
        }

        .payment-method.active {
            border-color: var(--orange);
            background: var(--orange-glow);
        }

        .payment-method-icon {
            font-size: 32px;
            margin-bottom: 10px;
        }

        .payment-method-name {
            font-weight: 700;
            font-size: 15px;
        }

        /* Payment Details Forms */
        .payment-details {
            display: none;
            margin-top: 30px;
            padding: 30px;
            background: var(--off-white);
            border-radius: 16px;
        }

        .payment-details.active {
            display: block;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid var(--border-light);
            border-radius: 12px;
            font-family: 'General Sans', sans-serif;
            font-size: 15px;
            background: var(--white);
            color: var(--text-dark);
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--orange);
            box-shadow: 0 0 0 3px var(--orange-glow);
        }

        /* File Upload */
        .file-upload-label {
            display: block;
            padding: 30px;
            border: 2px dashed var(--border-light);
            border-radius: 12px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s;
        }

        .file-upload-label:hover {
            border-color: var(--orange);
            background: var(--orange-glow);
        }

        .file-upload input[type="file"] {
            display: none;
        }

        /* Submit Button */
        .btn-submit {
            width: 100%;
            padding: 18px;
            background: var(--orange);
            color: white;
            border: none;
            border-radius: 50px;
            font-family: 'Cabinet Grotesk', sans-serif;
            font-size: 18px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-submit:hover {
            background: var(--orange-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px var(--orange-glow);
        }

        /* Order Summary */
        .order-summary {
            position: sticky;
            top: 120px;
        }

        .summary-item {
            display: flex;
            justify-content: space-between;
            padding: 15px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .summary-item.total {
            font-family: 'Cabinet Grotesk', sans-serif;
            font-size: 24px;
            font-weight: 800;
            border-top: 2px solid var(--border-light);
            padding-top: 20px;
            margin-top: 10px;
        }

        .summary-item.total .price {
            color: var(--orange);
        }

        /* Footer */
        footer {
            padding: 80px 0 40px;
            background: var(--white);
            border-top: 1px solid var(--border-light);
            margin-top: 80px;
        }

        .footer-container {
            max-width: 1500px;
            margin: 0 auto;
            padding: 0 60px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 60px;
            margin-bottom: 60px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .footer-logo-img {
            height: 50px;
            margin-bottom: 20px;
        }

        .footer-brand p {
            color: var(--text-gray);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 350px;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 15px;
        }

        .social-link {
            width: 54px;
            height: 54px;
            background: rgba(169, 169, 169, 0.25);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(105, 105, 105, 0.7);
            text-decoration: none;
            transition: all 0.3s;
            font-size: 22px;
        }

        body.dark-theme .social-link {
            color: rgba(255, 255, 255, 0.5);
        }

        .social-link:hover {
            background: var(--orange);
            color: white;
            transform: translateY(-3px) scale(1.08);
        }

        .footer-column h4 {
            font-family: 'Cabinet Grotesk', sans-serif;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 25px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 15px;
        }

        .footer-links a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 15px;
            transition: all 0.3s;
        }

        .footer-links a:hover {
            color: var(--orange);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid var(--border-light);
            color: var(--text-gray);
            font-size: 14px;
            max-width: 1500px;
            margin: 0 auto;
            padding-left: 60px;
            padding-right: 60px;
        }

        /* Success Modal */
        .success-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.8);
            z-index: 10000;
            align-items: center;
            justify-content: center;
        }

        .success-modal.show {
            display: flex;
        }

        .success-content {
            background: var(--white);
            border-radius: 24px;
            padding: 60px 40px;
            max-width: 500px;
            text-align: center;
        }

        .success-icon {
            width: 80px;
            height: 80px;
            background: rgba(16, 185, 129, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            margin: 0 auto 20px;
        }

        .success-content h2 {
            font-family: 'Cabinet Grotesk', sans-serif;
            font-size: 32px;
            margin-bottom: 15px;
        }

        .order-id {
            font-family: 'Courier New', monospace;
            background: var(--off-white);
            padding: 15px;
            border-radius: 12px;
            margin: 20px 0;
            font-weight: 700;
            font-size: 20px;
            color: var(--orange);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .payment-container {
                grid-template-columns: 1fr;
            }

            .footer-container {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            nav {
                padding: 15px 25px;
            }

            .nav-links {
                display: none;
            }

            .payment-methods {
                grid-template-columns: 1fr;
            }

            .payment-section {
                padding: 25px;
            }

            .currency-grid {
                grid-template-columns: 1fr;
            }

            .footer-container {
                grid-template-columns: 1fr;
                padding: 0 25px;
            }
        }