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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    background-color: var(--tg-theme-bg-color, #ffffff);
    color: var(--tg-theme-text-color, #000000);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.title {
    font-size: 2rem;
    font-weight: bold;
    text-align: center;
    color: var(--tg-theme-text-color, #000000);
}

.user-info {
    background-color: var(--tg-theme-secondary-bg-color, #f0f0f0);
    border-radius: 12px;
    padding: 16px;
    width: 100%;
    text-align: center;
    font-size: 1rem;
}

.card {
    background-color: var(--tg-theme-secondary-bg-color, #f0f0f0);
    border-radius: 12px;
    padding: 24px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.main-button {
    background-color: var(--tg-theme-button-color, #2ea6ff);
    color: var(--tg-theme-button-text-color, #ffffff);
    border: none;
    border-radius: 8px;
    padding: 12px 32px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    width: 100%;
}

.main-button:hover {
    opacity: 0.85;
}

.main-button:active {
    opacity: 0.7;
}