:root {
            --bg-dark: #0a0a0c;
            --bg-card: #151518;
            --primary: #f26a2e;
            --primary-hover: #ff7d44;
            --text-light: #f5f5f7;
            --text-muted: #a1a1aa;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            align-items: center;
            min-height: 100vh;
        }

        .header {
            margin-top: 60px;
            text-align: center;
            margin-bottom: 40px;
        }

        .header h1 {
            font-size: 2.5rem;
            margin-bottom: 10px;
            background: linear-gradient(to right, #fff, #a1a1aa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .header p {
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        .plans-container {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            justify-content: center;
            max-width: 1000px;
            padding: 0 20px;
            width: 100%;
        }

        .plan-card {
            background-color: var(--bg-card);
            border: 1px solid #27272a;
            border-radius: 16px;
            padding: 40px;
            width: 320px;
            display: flex;
            flex-direction: column;
            transition: transform 0.3s ease, border-color 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .plan-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
        }

        .plan-name {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .plan-price {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 20px;
            display: flex;
            align-items: baseline;
        }

        .plan-currency {
            font-size: 1.2rem;
            color: var(--text-muted);
            margin-left: 5px;
        }

        .features-list {
            list-style: none;
            padding: 0;
            margin: 0 0 30px 0;
            flex-grow: 1;
        }

        .features-list li {
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
            color: #d4d4d8;
        }

        .features-list li i {
            color: var(--primary);
            margin-right: 10px;
            margin-top: 4px;
        }

        .buy-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 8px;
            padding: 15px 0;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s;
            width: 100%;
            display: block;
            text-align: center;
            text-decoration: none;
        }

        .buy-btn:hover {
            background-color: var(--primary-hover);
        }

        .buy-btn.secondary {
            background-color: transparent;
            border: 1px solid #3f3f46;
        }

        .buy-btn.secondary:hover {
            background-color: #27272a;
        }

        .loading {
            font-size: 1.2rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        @keyframes spin {
            100% {
                transform: rotate(360deg);
            }
        }

        .loading i {
            animation: spin 1s linear infinite;
        }

        /* Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
        }

        .modal-content {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 40px 30px;
            border-radius: 12px;
            width: 90%;
            max-width: 400px;
            display: flex;
            flex-direction: column;
            gap: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            text-align: center;
        }

        .modal-content h2 {
            color: white;
            margin: 0;
            font-size: 1.5rem;
        }

        .modal-content p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .modal-content input {
            padding: 14px;
            background: var(--bg-color);
            border: 1px solid var(--border-color);
            color: white;
            border-radius: 8px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }

        .modal-content input:focus {
            border-color: #3b82f6;
        }

        .modal-content .close-btn {
            margin-top: 10px;
            background: none;
            border: none;
            color: #888;
            cursor: pointer;
            font-size: 0.9rem;
            text-decoration: underline;
        }

        .modal-content .close-btn:hover {
            color: white;
        }