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

:root {
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #3390ec;
    --tg-theme-button-color: #3390ec;
    --tg-theme-button-text-color: #ffffff;
    --tg-theme-secondary-bg-color: #f1f1f1;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 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;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
}

.content {
    background-color: var(--tg-theme-bg-color, #ffffff);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
}

.loading p {
    margin-top: 16px;
    color: var(--tg-theme-hint-color, #999999);
    font-size: 16px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--tg-theme-secondary-bg-color, #f1f1f1);
    border-top-color: var(--tg-theme-button-color, #3390ec);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.message {
    text-align: center;
    padding: 20px;
}

.message.hidden {
    display: none;
}

.message-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background-color: var(--tg-theme-secondary-bg-color, #f1f1f1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
}

.message-icon::before {
    content: "ℹ️";
}

.message.success .message-icon {
    background-color: #e8f5e9;
}

.message.success .message-icon::before {
    content: "✓";
    color: #4caf50;
    font-size: 40px;
    font-weight: bold;
}

.message.error .message-icon {
    background-color: #ffebee;
}

.message.error .message-icon::before {
    content: "⚠️";
}

.message h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--tg-theme-text-color, #000000);
}

.message p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--tg-theme-hint-color, #666666);
}

.message.success p {
    color: var(--tg-theme-text-color, #000000);
}

.message.success p strong {
    color: var(--tg-theme-button-color, #3390ec);
    font-weight: 600;
}