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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--tg-theme-bg-color, #fff);
    color: var(--tg-theme-text-color, #000);
    min-height: 100vh;
}

#app {
    max-width: 600px;
    margin: 0 auto;
    padding: 16px;
}

.header {
    text-align: center;
    padding: 20px 0;
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--tg-theme-text-color, #000);
}

.content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.btn {
    display: block;
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--tg-theme-button-color, #2481cc);
    color: var(--tg-theme-button-text-color, #fff);
}

.btn-primary:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-secondary {
    background: var(--tg-theme-secondary-bg-color, #f0f0f0);
    color: var(--tg-theme-text-color, #000);
}

.status {
    font-size: 14px;
    color: var(--tg-theme-hint-color, #999);
    text-align: center;
    padding: 8px 0;
}

.status.error {
    color: #e53935;
}

.status.success {
    color: #43a047;
}

.hidden {
    display: none !important;
}

.users-section h2 {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--tg-theme-text-color, #000);
}

.users-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--tg-theme-secondary-bg-color, #f0f0f0);
    border-radius: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.user-avatar-placeholder {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--tg-theme-button-color, #2481cc);
    color: var(--tg-theme-button-text-color, #fff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 500;
}

.user-name {
    font-size: 15px;
    font-weight: 500;
    color: var(--tg-theme-text-color, #000);
}

.user-username {
    font-size: 13px;
    color: var(--tg-theme-hint-color, #999);
}