 :root {
            --background: #ffffff;
            --foreground: #1e1b4b;
            --card: #ffffff;
            --card-foreground: #1e1b4b;
            --primary: #7c3aed;
            --primary-foreground: #f8fafc;
            --secondary: #f1f5f9;
            --secondary-foreground: #1e293b;
            --muted: #f1f5f9;
            --muted-foreground: #64748b;
            --accent: #f1f5f9;
            --accent-foreground: #1e293b;
            --destructive: #ef4444;
            --destructive-foreground: #f8fafc;
            --border: #e2e8f0;
            --input: #e2e8f0;
            --ring: #7c3aed;
            --radius: 0.5rem;
        }

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

        body {
            background: linear-gradient(to bottom, var(--background), #f5f3ff);
            color: var(--foreground);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 1rem;
        }

        .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            opacity: 0;
            transform: translateY(20px);
            animation: fadeIn 0.8s forwards;
        }

        @keyframes fadeIn {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .header {
            text-align: center;
            margin-bottom: 2rem;
            animation: slideDown 0.8s forwards;
            opacity: 0;
            transform: translateY(-20px);
        }

        @keyframes slideDown {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            background: linear-gradient(to right, #7c3aed, #e879f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .subtitle {
            color: var(--muted-foreground);
            max-width: 600px;
            margin: 0 auto;
        }

        .grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        .card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            border: 1px solid rgba(124, 58, 237, 0.1);
            opacity: 0;
            transform: translateY(20px);
        }

        .card-left {
            animation: slideUp 0.6s 0.2s forwards;
        }

        .card-right {
            animation: slideUp 0.6s 0.4s forwards;
        }

        @keyframes slideUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .card-header {
            background: rgba(124, 58, 237, 0.05);
            padding: 1.5rem;
            border-bottom: 1px solid rgba(124, 58, 237, 0.1);
        }

        .card-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .card-description {
            color: var(--muted-foreground);
            font-size: 0.875rem;
        }

        .card-content {
            padding: 1.5rem;
        }

        .card-footer {
            display: flex;
            justify-content: space-between;
            padding: 1rem 1.5rem;
            background: rgba(124, 58, 237, 0.05);
            border-top: 1px solid rgba(124, 58, 237, 0.1);
        }

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

        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }

        input {
            width: 100%;
            padding: 0.75rem;
            border-radius: var(--radius);
            border: 1px solid var(--input);
            background: var(--background);
            color: var(--foreground);
            font-size: 1rem;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        input:focus {
            outline: none;
            border-color: var(--ring);
            box-shadow: 0 0 0 2px rgba(124, 58, 237, 0.2);
        }

        input.error {
            border-color: var(--destructive);
        }

        .error-message {
            color: var(--destructive);
            font-size: 0.875rem;
            margin-top: 0.5rem;
            animation: shake 0.4s;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        button {
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 0.875rem;
            cursor: pointer;
            transition: all 0.2s;
        }

        button:disabled {
            opacity: 0.7;
            cursor: not-allowed;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--primary-foreground);
            border: none;
        }

        .btn-primary:hover:not(:disabled) {
            background: #6d28d9;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
        }

        .btn-primary:active:not(:disabled) {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(124, 58, 237, 0.2);
        }

        .btn-outline {
            background: transparent;
            color: var(--foreground);
            border: 1px solid var(--border);
        }

        .btn-outline:hover:not(:disabled) {
            background: var(--accent);
        }

        .feature {
            display: flex;
            gap: 1rem;
            margin-bottom: 1.5rem;
            opacity: 0;
            transform: translateX(20px);
        }

        .feature:nth-child(1) { animation: slideLeft 0.6s 0.5s forwards; }
        .feature:nth-child(2) { animation: slideLeft 0.6s 0.6s forwards; }
        .feature:nth-child(3) { animation: slideLeft 0.6s 0.7s forwards; }

        @keyframes slideLeft {
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .feature-icon {
            background: rgba(124, 58, 237, 0.1);
            border-radius: 50%;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .feature-icon svg {
            width: 24px;
            height: 24px;
            color: var(--primary);
        }

        .feature-content h3 {
            font-size: 1.125rem;
            font-weight: 500;
            margin-bottom: 0.25rem;
        }

        .feature-content p {
            color: var(--muted-foreground);
            font-size: 0.875rem;
        }

        .how-it-works {
            margin-top: 2rem;
            padding: 1rem;
            background: rgba(124, 58, 237, 0.05);
            border-radius: var(--radius);
            border: 1px solid rgba(124, 58, 237, 0.1);
            opacity: 0;
            animation: fadeIn 0.6s 0.8s forwards;
        }

        .how-it-works h3 {
            font-size: 1rem;
            font-weight: 500;
            margin-bottom: 0.5rem;
        }

        .how-it-works ol {
            padding-left: 1.5rem;
            color: var(--muted-foreground);
            font-size: 0.875rem;
        }

        .how-it-works li {
            margin-bottom: 0.5rem;
        }

        .toast {
            position: fixed;
            top: 1rem;
            right: 1rem;
            padding: 1rem;
            border-radius: var(--radius);
            background: var(--card);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transform: translateX(120%);
            transition: transform 0.3s ease-out;
            z-index: 1000;
            max-width: 350px;
        }

        .toast.show {
            transform: translateX(0);
        }

        .toast-success {
            border-left: 4px solid #10b981;
        }

        .toast-error {
            border-left: 4px solid #ef4444;
        }

        .toast-icon {
            width: 20px;
            height: 20px;
        }

        .toast-success .toast-icon {
            color: #10b981;
        }

        .toast-error .toast-icon {
            color: #ef4444;
        }

        .toast-message {
            font-size: 0.875rem;
        }

        .spinner {
            animation: spin 1s linear infinite;
            margin-right: 0.5rem;
            width: 16px;
            height: 16px;
        }

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

        .success-icon {
            color: #10b981;
            margin-right: 0.5rem;
            width: 16px;
            height: 16px;
            animation: scaleIn 0.3s;
        }

        @keyframes scaleIn {
            from { transform: scale(0); }
            to { transform: scale(1); }
        }

        .pulse {
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4); }
            70% { box-shadow: 0 0 0 10px rgba(124, 58, 237, 0); }
            100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0); }
        }

        .download-card {
            margin-top: 1.5rem;
            animation: slideUp 0.6s 0.6s forwards;
            opacity: 0;
            transform: translateY(20px);
        }

        .hover-effect:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .btn-download {
            position: relative;
            overflow: hidden;
        }

        .btn-download::after {
            content: "";
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(
                90deg,
                rgba(255, 255, 255, 0) 0%,
                rgba(255, 255, 255, 0.2) 50%,
                rgba(255, 255, 255, 0) 100%
            );
            animation: shimmer 2s infinite;
        }

        @keyframes shimmer {
            100% {
                left: 100%;
            }
        }