.enrollment-bubble {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 320px;
    max-width: calc(100vw - 40px);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 9999;
    transform: translateY(120%) scale(0.9);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
    pointer-events: none;
}

.enrollment-bubble.show {
    transform: translateY(0) scale(1);
    opacity: 1;
    pointer-events: auto;
}

.enrollment-bubble.hiding {
    transform: translateY(120%) scale(0.9);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}

.bubble-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.bubble-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
    color: white;
}

.bubble-info {
    flex: 1;
    min-width: 0;
}

.bubble-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bubble-email {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.bubble-close {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    opacity: 0.6;
    transition: opacity 0.2s, transform 0.2s;
}

.bubble-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

.bubble-content {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 0.875rem;
}

.bubble-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.bubble-course {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-primary);
    line-height: 1.4;
}

.bubble-message {
    display: none;
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.5;
}

@media (max-width: 480px) {
    .enrollment-bubble {
        bottom: 16px;
        left: 16px;
        right: 16px;
        width: auto;
        max-width: none;
    }
}