html, body {
    margin: 0;
    padding: 0;
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
    padding-top: clamp(70px, 10vw, 100px);
    padding-bottom: 2rem;
}

.footer {
    flex: 0 0 auto;
    width: 100%;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.5rem 1rem;
    box-sizing: border-box;
}

.visual-card-container {
    background-color: white;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 500px;
    max-width: 95vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    box-sizing: border-box;
}

.telegram-widget-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.qr-code-container #qrcode {
    background: white;
    padding: 12px;
    border-radius: 8px;
}

.qr-code-container #qrcode img {
    max-width: 100%;
    height: auto;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    main {
        padding-top: clamp(60px, 12vw, 80px);
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .visual-card-container {
        width: 100%;
        padding: clamp(24px, 5vw, 40px);
        border-radius: 16px;
    }

    .qr-code-container {
        padding: clamp(12px, 4vw, 20px);
    }

    .qr-code-container #qrcode {
        padding: 8px;
    }

    .visual-card-text h4 {
        font-size: 1.25rem;
        margin: 0 0 0.75rem 0;
    }

    .visual-card-text p {
        font-size: 0.9rem;
        margin: 0;
    }
}

@media (max-width: 480px) {
    main {
        padding-top: clamp(55px, 14vw, 70px);
    }

    .visual-card-container {
        padding: clamp(16px, 4vw, 24px);
        border-radius: 12px;
    }

    .visual-card-text h4 {
        font-size: 1.1rem;
    }

    .visual-card-text p {
        font-size: 0.85rem;
    }
}