:root {
            --primary-500: #6366f1;
            --primary-600: #4f46e5;
            --secondary-500: #a855f7;
            --dark-900: #0f172a;
            --dark-800: #1e293b;
            --light-50: #f9f9ff;
            --light-100: #eef2ff;
        }

        .hero-gradient {
            background: linear-gradient(135deg, var(--light-50) 0%, var(--light-100) 100%);
            transition: all 0.5s ease;
        }

        .dark .hero-gradient {
            background: linear-gradient(135deg, var(--dark-900) 0%, var(--dark-800) 100%);
        }

        .shadow-soft-xl {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.01);
        }

        .dark .shadow-soft-xl {
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }

        .btn-secondary {
            border-color: var(--primary-500);
            color: var(--primary-500);
            transition: all 0.3s ease;
        }

        .dark .btn-secondary {
            border-color: var(--light-100);
            color: var(--light-100);
        }

        .btn-secondary:hover {
            background-color: rgba(99, 102, 241, 0.1);
        }

        .dark .btn-secondary:hover {
            background-color: rgba(238, 242, 255, 0.1);
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--primary-600) 0%, var(--secondary-500) 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .dark .text-gradient {
            background: linear-gradient(135deg, #8b5cf6 0%, #c4b5fd 100%);
        }

        .dark-mode-toggle {
            position: fixed;
            top: 1.5rem;
            right: 1.5rem;
            z-index: 50;
        }

        .toggle-bg {
            background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
        }

        .loader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--light-50);
            z-index: 9999;
            display: flex;
            justify-content: center;
            align-items: center;
            transition: opacity 0.5s ease-out;
        }

        .dark .loader {
            background: var(--dark-900);
        }

        .loader-circle {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            border: 5px solid rgba(99, 102, 241, 0.2);
            border-top-color: var(--primary-500);
            animation: spin 1s linear infinite;
        }

        .dark .loader-circle {
            border-top-color: #8b5cf6;
        }

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

        body.dark {
            color: #f8fafc;
            background-color: var(--dark-900);
        }

        .dark .text-gray-600 {
            color: #cbd5e1;
        }

        .dark .text-gray-500 {
            color: #94a3b8;
        }

        .dark .bg-white {
            background-color: #1e293b;
        }

        .dark .text-gray-800 {
            color: #e2e8f0;
        }

        .dark .bg-green-100 {
            background-color: #14532d;
        }

        .dark .text-green-600 {
            color: #4ade80;
        }